CN203933909U - A fixed-moving dual-voice-coil earphone speaker - Google Patents

Abstract

The utility model discloses a fixed-motion dual voice coil earphone speaker, comprising a diaphragm, a washer assembly, a voice coil assembly, a bracket, a magnet and a U-shaped cup, wherein a through hole is opened in the middle of the bracket, and a groove is opened in the upper part of the through hole; the diaphragm covers the outside of the groove in the upper part of the bracket; the washer assembly is arranged in the through hole of the bracket; the U-shaped cup is arranged on the bracket and embedded in the through hole from the lower part of the bracket; the voice coil assembly is arranged between the diaphragm and the U-shaped cup, and the magnet is arranged between the U-shaped cup and the washer assembly to form a magnetic field; the voice coil assembly is externally connected to an audio signal transmission device, and the audio signal is transmitted to the voice coil assembly, and interacts with the magnetic field to generate vibration, so as to drive the diaphragm to vibrate and make sound. The utility model has a simple structure, good sound quality and powerful functions.

Description

A fixed-moving dual-voice-coil earphone speaker

technical field

The utility model relates to a loudspeaker, in particular to a fixed-moving double voice coil earphone loudspeaker.

Background technique

With the continuous improvement of people's appreciation of music, the sound effect of earphones with one speaker can no longer meet people's needs. If two or more speakers are used, the volume and cost of the product will inevitably increase. In order to achieve good sound effects, there are two or more independent speakers in one earphone, and there are two speakers that are combined into a coaxial form. There are also two voice coils used in a speaker, and these voice coils are fixed on the speaker diaphragm to vibrate together, that is, both voice coils are dynamic voice coils, but because the two dynamic voice coils are too heavy, the sound effect will be improved. Very limited, these voice coils only improve the sound effect through a more complex structure and larger product volume, high production cost, low production cost performance, and poor market competitiveness.

Utility model content

The technical problem to be solved by the utility model is to provide a fixed-moving double-voice-coil earphone speaker with simple structure, good sound quality and sound effect, and powerful functions for the above-mentioned deficiencies in the prior art.

The technical scheme adopted by the utility model is as follows: a fixed-moving double voice coil earphone speaker, including a diaphragm, a washer assembly, a voice coil assembly, a bracket, a magnet and a U-shaped cup, wherein a through hole is opened in the middle of the bracket, The upper part of the through hole has a groove; the above-mentioned diaphragm is covered outside the groove on the upper part of the bracket; the above-mentioned washer assembly is arranged in the through-hole of the bracket; Inside; the above-mentioned voice coil assembly is set between the diaphragm and the U-shaped cup, and the magnet is set between the U-shaped cup and the washer assembly to form a magnetic field; the voice coil assembly is externally connected to an audio signal transmission device, and the audio signal is transmitted to the voice coil assembly , interacting with the magnetic field to generate vibration to drive the diaphragm to vibrate and produce sound.

Preferably, a stepped surface is provided in the groove on the upper part of the bracket, and the two ends of the diaphragm are fixed on the stepped surface.

Preferably, the through hole of the bracket includes an upper hole and a lower hole, the upper hole is arranged at the upper part of the through hole, the lower hole is arranged at the lower part of the through hole, the inner diameter of the upper hole is smaller than the inner diameter of the lower hole, and the upper hole is arranged at the lower part of the through hole. A stepped surface is formed at the junction of the hole portion and the lower hole portion.

Preferably, the U-shaped cup is embedded in the lower hole of the through hole of the bracket, and the upper end surface of the U-shaped cup is in close contact with the step surface in the through hole of the bracket, so as to be limited and fixed.

Preferably, the inner diameter of the U-shaped cup is smaller than the inner diameter of the upper hole of the stent through hole, and the inner diameter of the U-shaped cup extends inwardly relative to the inner diameter of the upper hole to form a supporting ring surface.

Preferably, the washer assembly includes a circular washer and an annular washer, wherein the above-mentioned circular washer is arranged in the middle of the upper hole of the through hole of the bracket, and the annular ring is sleeved on the outside of the circular washer , a channel magnetic field is formed between the inner wall of the annular ring and the outer wall of the circular washer; the annular washer is embedded in the above-mentioned supporting ring surface, and the upper end surface of the U-shaped cup 9 provides a supporting force.

Preferably, the voice coil assembly includes a moving voice coil and a fixed voice coil, wherein the upper end of the moving voice coil is fixed on the diaphragm, and the lower end extends downward through the channel magnetic field to the inner wall of the bottom plate of the U-shaped cup; The voice coil is arranged in the U-shaped cup and adheres to the side wall of the U-shaped cup.

Preferably, the magnet is arranged on the bottom plate of the U-shaped cup, and a circular washer is arranged on the magnet to support the circular washer; the above-mentioned circular washer, magnet, U-shaped ring and annular washer form a magnetic field circuit The above-mentioned dynamic voice coil and fixed voice coil are all connected to the audio signal transmission device, and the dynamic voice coil receives the audio signal and the magnetic field to drive the diaphragm to vibrate and produce sound; the fixed voice coil receives the audio signal to generate an alternating magnetic field, and the alternating magnetic field acts on The magnetic field circuit generates electromagnetic force to change the sound production of the diaphragm.

The beneficial effects of the utility model are:

The utility model is an innovative technical solution aiming at the prior art. It replaces the traditional dynamic voice coil structure by setting a dynamic voice coil plus a fixed voice coil. The voice coil is connected to an audio signal transmission device, and the audio signal is transmitted to a fixed voice coil. An alternating magnetic field is generated in the coil, and the alternating magnetic field and the magnetic field circuit of the speaker generate electromagnetic effects, thereby changing the sound effect of the diaphragm; the voice coil is not directly connected to the diaphragm but is separated independently, so that various parameters of the voice coil can be flexibly designed , while not increasing the quality of the diaphragm and moving voice coil, in order to improve the sound quality or achieve some special sound effects.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model will be further described below in conjunction with accompanying drawing:

As shown in Figure 1, the technical scheme adopted by the utility model is as follows: a fixed-moving double voice coil earphone speaker, including a diaphragm 1, a washer assembly, a voice coil assembly, a bracket 5, a magnet 8 and a U-shaped cup 9, wherein , the middle part of the above-mentioned support 5 has a through hole, and the upper part of the through hole has a groove; the above-mentioned diaphragm 1 is covered outside the groove on the upper part of the support 5; the above-mentioned washer assembly is arranged in the through-hole of the support 5; the above-mentioned U The type cup 9 is set in the bracket 5 and embedded in the through hole from the lower part of the bracket 5; the above-mentioned voice coil assembly is set between the diaphragm 1 and the U-shaped cup 9, and the magnet 8 is set between the U-shaped cup 9 and the washer assembly to form a magnetic field; the voice coil assembly is externally connected to an audio signal transmission device, the audio signal is transmitted to the voice coil assembly, and interacts with the magnetic field to generate vibrations to drive the diaphragm 1 to vibrate and produce sound.

A stepped surface is provided in the groove on the upper part of the support 5, and the two ends of the above-mentioned diaphragm 1 are fixed on the stepped surface.

The through hole of support 5 comprises an upper hole portion and a lower hole portion, the upper hole portion is arranged on the upper portion of the through hole, the lower hole portion is arranged at the lower portion of the through hole, the inner diameter of the upper hole portion is smaller than the inner diameter of the lower hole portion, and the upper hole portion and the lower hole portion A stepped surface is formed at the junction of the parts.

The U-shaped cup 9 is embedded in the lower hole of the through hole of the bracket 5, and the upper end surface of the U-shaped cup 9 is close to the step surface in the through hole of the bracket 5, so as to limit and fix it.

The inner diameter of the U-shaped cup 9 is smaller than the inner diameter of the upper hole of the through hole of the bracket 5, and the inner diameter of the U-shaped cup 9 extends inwardly relative to the inner diameter of the upper hole to form a supporting ring surface.

The washer assembly includes a circular washer 2 and an annular washer 4, wherein the above-mentioned circular washer 2 is set in the middle of the upper hole of the through hole of the bracket 5, and the annular ring 4 is set on the outside of the circular washer 2 , A channel magnetic field 6 is formed between the inner wall of the annular ring 4 and the outer wall of the circular washer 2; the annular washer 4 is embedded in the supporting ring surface, and the upper end surface of the U-shaped cup 9 provides support.

The voice coil assembly includes a moving voice coil 3 and a fixed voice coil 7, wherein the upper end of the above-mentioned moving voice coil 3 is fixed on the diaphragm 1, and the lower end extends downward through the channel magnetic field 6 to the inner wall of the bottom plate of the U-shaped cup 9; The voice coil 7 is set in the U-shaped cup 9 and is close to the side wall of the U-shaped cup 9 .

The magnet 8 is arranged on the bottom plate of the U-shaped cup 9, and the magnet 8 is provided with a circular washer 2 to support the circular washer 2; the above-mentioned circular washer 2, magnet 8, U-shaped ring 9 and annular washer 4 A magnetic field circuit is formed; the above-mentioned dynamic voice coil 3 and fixed voice coil 7 are connected to the audio signal transmission device, and the dynamic voice coil 3 receives the audio signal and the magnetic field to drive the diaphragm 1 to vibrate and produce sound; the fixed voice coil 7 receives the audio signal to generate alternating Magnetic field, the alternating magnetic field acts on the magnetic field circuit to generate electromagnetic force, so as to change the sound of the diaphragm 1 .

Further, the moving voice coil of the present utility model is fixed on the vibrating membrane, and the vibrating membrane is fixed on the support; the circular washer, the magnet, the U cup and the annular washer are fixed together to form a magnetic field circuit; the 7 voice coils are fixed on the U cup Inside, the magnetic field channel is the magnetic field area formed by the circular Washer and the annular Washer. The working principle of the utility model is: when the audio signal passes through the dynamic voice coil, the dynamic voice coil will be affected by the electromagnetic force in the magnetic field area and move to push the diaphragm to produce sound; when the audio signal passes through the dynamic voice coil, it will also supply the fixed voice coil audio At this time, the voice coil will generate an alternating magnetic field that changes with the audio signal. This alternating magnetic field is introduced into the magnetic field area by the U-shaped cup and the ring washer to generate electromagnetic force on the dynamic voice coil, thereby changing the sound effect of the diaphragm. . Since the voice coil is not directly connected to the diaphragm but is separated independently, it is possible to flexibly design various parameters of the voice coil without increasing the quality of the diaphragm and moving coil, so as to improve the sound quality or achieve some special sound effects.

The embodiment of the utility model is only to introduce its specific implementation, not to limit its protection scope. Those skilled in the industry can make some modifications under the inspiration of this embodiment, so all equivalent changes or modifications made according to the patent scope of the utility model all belong to the scope of the patent claims of the utility model.

Claims (8)

1. A fixed-moving dual-voice coil earphone speaker, characterized in that it includes a diaphragm (1), a washer assembly, a voice coil assembly, a bracket (5), a magnet (8) and a U-shaped cup (9), wherein, There is a through hole in the middle part of the bracket (5), and a groove is opened in the upper part of the through hole; the diaphragm (1) is covered outside the groove on the upper part of the bracket (5); the washer assembly is arranged on the bracket (5) in the through hole; the above-mentioned U-shaped cup (9) is set in the bracket (5) and embedded in the through-hole from the lower part of the bracket (5); the above-mentioned voice coil assembly is set between the diaphragm (1) and the U-shaped cup (9) Between them, the magnet (8) is set between the U-shaped cup (9) and the Wasser assembly to form a magnetic field; the voice coil assembly is externally connected to an audio signal transmission device, and the audio signal is transmitted to the voice coil assembly, which interacts with the magnetic field to generate vibration. To drive the diaphragm (1) to vibrate to produce sound. 2. A fixed-moving dual-voice-coil headphone speaker according to claim 1, characterized in that: the groove on the upper part of the support (5) is provided with a stepped surface, and the two ends of the above-mentioned diaphragm (1) are fixed on that step. 3. A fixed-moving dual-voice-coil earphone speaker according to claim 2, characterized in that: the through hole of the bracket (5) includes an upper hole and a lower hole, and the upper hole is set on the upper part of the through hole , the lower hole is arranged at the lower part of the through hole, the inner diameter of the upper hole is smaller than the inner diameter of the lower hole, and a step surface is formed at the junction of the upper hole and the lower hole. 4. A fixed-moving dual voice coil earphone speaker according to claim 3, characterized in that: the U-shaped cup (9) is embedded in the lower hole of the through hole of the bracket (5), and the U-shaped cup (9) The upper end surface of the support (5) is close to the step surface in the through hole, so that the limit is fixed. 5. A fixed-moving dual voice coil earphone speaker according to claim 4, characterized in that: the inner diameter of the U-shaped cup (9) is smaller than the inner diameter of the upper hole of the through hole of the bracket (5), and the inner diameter of the U-shaped cup (9) The inner diameter of (9) extends inwardly relative to the inner diameter of the upper hole to form a supporting ring surface. 6. A fixed-moving dual-voice-coil earphone speaker according to claim 5, characterized in that: the washer assembly includes a circular washer (2) and an annular washer (4), wherein the circular washer The washer (2) is set in the middle of the upper hole of the through hole of the bracket (5), the annular ring (4) is sleeved on the outside of the circular washer (2), and the inner wall of the annular ring (4) is in contact with the circular washer A channel magnetic field (6) is formed between the outer walls of the divisions (2); the ring-shaped washer (4) is embedded in the above-mentioned support ring surface, and the support force is provided by the upper end surface of the U-shaped cup (9). 7. A fixed-moving dual voice coil earphone speaker according to claim 6, characterized in that: said voice coil assembly includes a moving voice coil (3) and a fixed voice coil (7), wherein the moving voice coil The upper end of (3) is fixed on the diaphragm (1), and the lower end extends downward through the channel magnetic field (6) to the inner wall of the bottom plate of the U-shaped cup (9); the above-mentioned voice coil (7) is set on the U-shaped cup (9 ) and stick to the side wall of the U-shaped cup (9). 8. A fixed-moving dual voice coil earphone speaker according to claim 7, characterized in that: the magnet (8) is set on the bottom plate of the U-shaped cup (9), and the magnet (8) is provided with a circle shaped washer (2) in order to support the circular washer (2); the above-mentioned circular washer (2), magnet (8), U-shaped ring (9) and annular washer (4) form a magnetic field circuit; the above-mentioned dynamic Both the voice coil (3) and the voice coil (7) are connected to the audio signal transmission device, the dynamic voice coil (3) receives the audio signal and the magnetic field to drive the diaphragm (1) to vibrate and produce sound; the voice coil (7) receives the audio signal The signal generates an alternating magnetic field, and the alternating magnetic field acts on the magnetic field circuit to generate electromagnetic force, so as to change the sound of the diaphragm (1).