CN204518065U - Loud speaker - Google Patents

Abstract

The utility model provides a loudspeaker, which includes a casing and a vibration system; the vibration system includes a diaphragm and a voice coil bonded and fixed with the diaphragm; a metal ring supporting the diaphragm is combined on the lower side of the diaphragm; the lower side of the metal ring is connected with the casing The side is fixed; the casing is injection-molded with conductive components connected to the internal and external circuits of the speaker; one end of the conductive component is electrically connected to the lead wire of the voice coil, and the other end extends to the metal ring; the diaphragm and the metal ring are electrically connected Connection; the metal ring is electrically connected to the conductive component. The loudspeaker provided by the above-mentioned utility model can timely release the static electricity generated by the diaphragm and the metal ring, and avoid damage to the loudspeaker caused by instantaneous discharge.

Description

speaker

technical field

The utility model relates to the technical field of sound and electricity, and more specifically relates to a loudspeaker.

Background technique

As a common electro-acoustic transducer device that converts electrical energy into sound energy, the speaker plays an indispensable role in the sound reproduction system. The loudspeaker is the weakest component in the sound amplifier system, and it is the most important component for the sound amplifier effect. There are many kinds of loudspeakers, and the audio electric energy makes its paper cone or diaphragm vibrate and resonate with the surrounding air through electromagnetic, piezoelectric or electrostatic effects to produce sound. Therefore, it is with the appearance of loudspeakers that people can hear beautiful sounds.

In our daily life, the most widely used loudspeaker is the dynamic loudspeaker, also known as the dynamic loudspeaker. It is mainly composed of three parts: vibration system, magnetic circuit system and auxiliary system. Generally speaking, the vibration system includes a voice coil and a diaphragm; the magnetic circuit system includes a magnet, a magnetic plate and a washer; the auxiliary system includes a front cover and a casing. When the voice coil in the magnetic field has an audio current flowing through it, it will receive an alternating driving force to generate alternating motion, which will drive the diaphragm to vibrate, and then repeatedly push the air to produce sound.

At present, since the metal ring and the diaphragm of the loudspeaker are not grounded, the static electricity generated by the diaphragm or the metal ring cannot be released in time when the driver is running, which affects the service life of the diaphragm and the sound quality of the speaker; When the static electricity generated by the metal ring is released unreasonably, the speaker will produce sound distortion, and when the electrostatic current is large, the instantaneous discharge will cause the voice coil to move, change the relative position of the voice coil and the diaphragm, and affect the acoustic performance of the speaker. lead to speaker failure.

Utility model content

In view of the above problems, the purpose of this utility model is to provide a loudspeaker, which can solve the problems of short service life of the diaphragm and poor sound quality caused by the inability of the diaphragm and the metal ring to discharge static electricity.

The loudspeaker provided by the utility model includes a casing and a vibration system; the vibration system includes a diaphragm and a voice coil bonded and fixed with the diaphragm; a metal ring supporting the diaphragm is combined on the lower side of the diaphragm; the lower side of the metal ring is connected to the casing side The part is fixed; the casing is injection-molded with conductive components connected to the internal and external circuits of the speaker; one end of the conductive component is electrically connected to the lead wire of the voice coil, and the other end extends to the metal ring; the diaphragm is electrically connected to the metal ring ; The metal ring is electrically connected with the conductive components.

In addition, a preferred structure is that the diaphragm and the metal ring are electrically connected by laser welding or conductive glue.

In addition, in a preferred structure, the metal ring and the conductive components are also electrically connected by laser welding or conductive glue.

In addition, in a preferred structure, the conductive components include pads, FPCB, and wires.

In addition, in a preferred structure, the pad is located on the elastic piece of the speaker.

In addition, it is preferable that the extended surface of the conductive component is electrically connected to the surface of the metal ring.

In addition, the preferred structure is that the resistance of the electrically connected part of the metal ring and the conductive component is not greater than 2 kilohms.

In addition, the preferred structure further includes a magnetic circuit system; wherein, the magnetic circuit system includes a pot frame, a magnet and a washer housed in the pot frame; the magnet and the pot frame are bonded and fixed; the washer covers the upper surface of the magnet.

In addition, a preferred structure is that a sound outlet is provided on the side of the casing; a damping net is attached to the position of the casing corresponding to the sound outlet.

It can be seen from the above technical scheme that the loudspeaker provided by the utility model can realize the discharge of the diaphragm and the metal ring by electrically connecting the conductive components and the metal ring, and the metal ring and the diaphragm. The process is simple and can be used The lower cost improves the acoustic performance and product life of the loudspeaker, and the mass production is high.

Description of drawings

By referring to the following description combined with the accompanying drawings and the content of the claims, and with a more comprehensive understanding of the utility model, other objectives and results of the utility model will be more clear and easy to understand. In the attached picture:

Fig. 1 is a top view of a loudspeaker according to an embodiment of the present invention;

Fig. 2 is a side view of a loudspeaker according to an embodiment of the present invention;

Fig. 3 is an exploded view of a loudspeaker according to an embodiment of the present invention;

4 is a cross-sectional view of a loudspeaker according to an embodiment of the present invention; and,

Fig. 5 is a partially enlarged view of part I in Fig. 4 .

Reference signs therein include: diaphragm 1 , metal ring 2 , conductive components 3 , housing 4 , damping net 5 , washer 6 , magnet 7 , basin frame 8 , and voice coil 9 .

The same reference numerals indicate similar or corresponding features or functions throughout the drawings.

Detailed ways

Aiming at the problems that the static electricity generated by the above-mentioned metal ring and diaphragm cannot be released, resulting in shortened service life of the diaphragm and poor sound quality of the speaker, the utility model combines the conductive components of the speaker itself with the metal ring that fixes the diaphragm according to the structural characteristics of the speaker. Electrical conduction, the static electricity generated by the metal ring and the diaphragm is released through the conductive components, effectively preventing the Driver damage caused by static electricity, prolonging the service time of the diaphragm, improving the sound quality of the speaker, and the speaker of the utility model is low in cost, simple in process, and scalable High productivity.

In order to describe the loudspeaker provided by the utility model in detail, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

Fig. 1 shows the top view structure of the speaker according to the embodiment of the utility model; Fig. 2 shows the side view structure of the speaker according to the embodiment of the utility model; Fig. 3 shows the decomposition of the speaker according to the embodiment of the utility model structure.

As shown in Fig. 1, Fig. 2 and Fig. 3 together, the loudspeaker that the utility model embodiment provides comprises housing 4 and vibrating system; The lower side of 1 is combined with a metal ring 2 supporting the diaphragm 1, and the lower side of the metal ring 2 is fixedly connected to the side of the housing 4; the housing 4 is injection-molded with a conductive component 3 that communicates with the internal and external circuits of the speaker. Among them, one end of the conductive component 3 is electrically connected to the lead wire of the voice coil 9, the other end extends to the metal ring and is electrically connected to the metal ring 2, the diaphragm 1 is electrically connected to the metal ring 2, and the metal ring 2 is electrically connected to the conductive ring 2. The components 3 are electrically connected, so that the static electricity generated by the diaphragm 1 or the metal ring 2 can be released through the conductive components 3 in time.

In a specific embodiment of the present invention, the conductive component 3 is located on the end face of the side of the shell 4 combined with the metal ring 2 , so as to facilitate the electrical connection between the metal ring 2 and the conductive component 3 .

In addition, the loudspeaker provided by the utility model also includes a magnetic circuit system; wherein, the magnetic circuit system includes a pot frame 8 and a magnet 7 and a washer 6 accommodated in the pot frame 8; the magnet 7 and the pot frame 8 are bonded and fixed; the washer 6 covers the upper surface of the magnet 7 .

Specifically, the loudspeaker provided by the embodiment of the present invention includes a magnetic circuit system, a vibration system and an auxiliary system. Among them, the magnetic circuit system includes a basin frame 8 , a magnet 7 and a washer 6 ; the vibration system includes a diaphragm 1 and a voice coil 9 , and a metal ring 2 is combined on the lower side of the diaphragm 1 ; the auxiliary system includes a casing 4 . The loudspeaker of the present invention also includes conductive components 3 for connecting internal and external circuits of the loudspeaker. Among them, the metal ring 2 is combined on the top of the casing 4 to fix and support the diaphragm 1, and the diaphragm 1 is electrically connected to the metal ring 2, the metal ring 2 is electrically connected to the conductive component 3, and the magnet 7 and the washer 6 are accommodated. Inside the frame 8, and set a certain distance from the frame 8 to form a magnetic gap, the voice coil 9 and the diaphragm 1 are bonded and fixed, and one end of the voice coil 9 is placed in the magnetic gap. In addition, a sound hole is provided on the side of the shell 4; a damping net 5 is pasted on the position of the shell 4 corresponding to the sound hole to prevent pollutants in the air from entering the speaker.

The conductive component 3 involved in the utility model is a conductive component such as pad, FPCB or wire, and the conductive component 3 is mainly used to connect the internal components of the speaker with the external circuit. As shown in FIG. 3 , in a specific embodiment of the present invention, the conductive component 3 is a pad on the elastic piece. Wherein, the diaphragm 1 is fixed on the metal ring 2 , the metal ring 2 is fixed on the side of the housing 4 , and two shrapnels are provided for connecting the external circuit and the voice coil 9 .

Wherein, the shape of the diaphragm 1 can be a rectangular, racetrack or elliptical structure, including a reinforcing part combined with its central part and a diaphragm body part located at the edge part. The metal ring 2 is attached to the shell 4, and the diaphragm The membrane 1 is supported and fixed by the metal ring 2, and the two are electrically connected to each other.

In addition, the damping net 5 is pasted on the position corresponding to the sound outlet of the shell 2, which not only prevents small particles of pollutants in the air from entering the speaker, but also avoids the direct impact of the airflow on the diaphragm 1, ensuring the sound quality of the speaker during use and its acoustic performance.

It should be noted that, in a specific embodiment of the present invention, the conductive component 3 can be a pad, and the pad refers to any pad that has a conductive function existing inside the speaker, and it can be provided for the shrapnel itself The pads can also be pads provided on the FPCB, as long as they can be electrically connected to the metal ring 2, there is no specific limitation.

In addition, the loudspeaker frame 8 provided by the embodiment of the present invention is made of highly magnetically conductive materials, and is fixed on the shell 4 by applying glue or fixing columns during use, which can play a role in heat dissipation and avoid magnetic circuit system The temperature is too high when working to ensure the acoustic performance of the speaker.

In a preferred embodiment of the present utility model, the conductive component 3 can be any one of pads, FPCB or wires, etc., and the metal ring 2 can be electrically connected to any one of them to realize the vibration of the diaphragm 1. Discharging; Wherein, when the conductive component 3 is a wire, the wire is any wire connected to the power line in the speaker.

In the utility model, the conductive component 3 used to connect the internal and external circuits of the speaker is electrically connected (that is, electrically connected) to the metal ring 2 of the fixed diaphragm 1, and the metal ring is released through the conductive component 3 provided by the speaker itself. 2 or the static electricity generated by the diaphragm 1 can prolong the service life of the diaphragm, improve the sound quality of the speaker, and prevent damage to the speaker caused by static electricity. The operation is simple and the mass production is high.

In the above-mentioned process of conducting electrical connection between the conductive component 3 and the metal ring 2 , the conductive component 3 is extended to the metal ring 2 , and is electrically connected to the metal ring 2 through a process such as conductive glue or laser welding. For example, when the conductive component 3 is a wire, in the process of releasing static electricity to the metal ring 2 of the speaker, the wire can be extended to the metal ring 2, and the metal ring 2 and the metal ring 2 can be connected by conductive glue or laser welding. Wires are electrically connected. Similarly, conductive components such as pads or FPCBs can also be electrically connected to the metal ring 2 in this way, thereby releasing static electricity generated by the diaphragm 1 or the metal ring 2 . In this solution, the diaphragm 1 and the metal ring 2 are electrically connected in the same manner.

It should be noted that, in the specific implementation process, the electrical connection between the metal ring 2 and the vibrating film 1, the conductive component 3 and the metal ring 2 is realized by laser welding or conduction with conductive glue, which is only for illustration. The exemplary enumeration of the realization of this solution under the technological process is not limited to the above two conduction modes, and other conduction modes can also be realized.

It should be noted that, in a specific embodiment of the present invention, the extension surface of the conductive component 3 is electrically connected to the surface of the metal ring 2; since the diaphragm 1 is fixedly supported by the metal ring 2 and both are also electrically conductive Connection, when the diaphragm 1 or the metal ring 2 generates static electricity, it can be released through the conductive component 3 electrically connected to it, so as to avoid damage to the speaker caused by static electricity.

In addition, in order to smoothly release the static electricity generated on the vibrating membrane 1 or the metal ring 2, in the process of conducting electrical conduction between the metal ring 2 and the conductive component 3, try to ensure that the resistance of the electrical connection between the two is not greater than 2K ohms . In other words, the resistance of the connecting part of the conductive component 3 and the metal ring 2 is controlled within 2K ohms, so as to ensure that the static electricity generated by the metal ring 2 or the diaphragm 1 is released smoothly and in time.

Specifically, as an example, FIG. 4 shows a cross-sectional structure of a loudspeaker according to an embodiment of the present invention; FIG. 5 shows a partially enlarged structure of part I in FIG. 4 .

As shown in Figure 4 and Figure 5 together, in this specific embodiment, the metal ring 2 and the conductive component 3 (the soldering pad arranged on the shrapnel) are electrically connected to each other, because the metal ring 2 and the diaphragm 1 of the loudspeaker are electrically connected to each other. When static electricity is generated on the vibrating membrane 1 or the metal ring 2, it can be released in time through the conductive component 3 electrically connected to the metal ring 2.

The conductive component 3 extends to the metal ring 2, and is electrically connected to the metal ring 2 through conductive glue or laser welding, and the diaphragm 1 is electrically connected to the metal ring 2. The grounding discharge of the metal ring can improve the acoustic performance and life of the loudspeaker at a lower cost; in addition, techniques such as conductive glue and laser welding have been widely used in the field of sound and electricity, and the technology is mature, which can realize the mass production of the loudspeaker provided by the utility model .

It can be seen from the above embodiments that the loudspeaker provided by the utility model electrically connects the metal ring that fixedly supports the diaphragm to the conductive components inside the loudspeaker, and at the same time electrically connects the diaphragm to the metal ring to release the metal ring and The static electricity generated by the diaphragm can prolong the service life of the diaphragm, improve the sound quality of the speaker, and prevent the speaker from being damaged by its own static electricity during use. In addition, the loudspeaker provided by the utility model has low production cost, simple process, no need to add parts, and the acoustic performance and product life of the loudspeaker can be improved with relatively low cost.

The loudspeaker proposed according to the present invention has been described above by way of example with reference to the accompanying drawings. However, those skilled in the art should understand that various improvements can be made to the loudspeaker proposed by the above-mentioned utility model without departing from the content of the utility model. Therefore, the protection scope of the present utility model should be determined by the contents of the appended claims.

Claims (9)

1. A loudspeaker, comprising a shell and a vibration system; the vibration system comprises a diaphragm and a voice coil bonded and fixed to the diaphragm; a metal ring supporting the diaphragm is combined on the lower side of the diaphragm; The lower side of the metal ring is fixed to the side of the shell; the shell is injection-molded with conductive components connected to the internal and external circuits of the speaker; it is characterized in that, One end of the conductive component is electrically connected to the lead wire of the voice coil, and the other end extends to the metal ring; The diaphragm is electrically connected to the metal ring; The metal ring is electrically connected to the conductive component. 2. The loudspeaker of claim 1, wherein The diaphragm is electrically connected to the metal ring by laser welding or conductive glue. 3. The loudspeaker of claim 1, wherein The metal ring is also electrically connected to the conductive components by laser welding or conductive glue. 4. The loudspeaker of claim 1, wherein The conductive components include pads, FPCB and wires. 5. Loudspeaker as claimed in claim 4, characterized in that, The welding pad is located on the shrapnel of the speaker. 6. The loudspeaker of claim 3, wherein The extension surface of the conductive component is electrically connected to the surface of the metal ring. 7. The loudspeaker of claim 1, wherein The resistance value of the electrical connection part between the metal ring and the conductive components is not greater than 2 kilohms. 8. The loudspeaker according to claim 1, further comprising a magnetic circuit system; wherein, The magnetic circuit system includes a pot frame, a magnet and a washer accommodated in the pot frame; the magnet is bonded and fixed to the pot frame; and the washer is covered on the upper surface of the magnet. 9. The loudspeaker of claim 1, wherein A sound outlet is provided on the side of the housing; A damping net is pasted on the housing corresponding to the position of the sound outlet.