CN106489272A - An external magnetic ultra-thin speaker and audio device - Google Patents

Abstract

An external magnetic ultrathin loudspeaker and an audio device. The external magnetic type ultra-thin speaker includes: a magnetic circuit structure comprising: the T-shaped iron (1) is sleeved with the magnet (2) and the washer (3) in the upper vertical part of the T-shaped iron (1) in a stacked mode, and the magnet (2) is in contact with the horizontal part of the T-shaped iron (1); a radiating vibrating structure comprising: the spring (4) arranged on the washer (3), the radiation vibrating diaphragm (6) arranged opposite to the spring (4), and the voice coil (5), wherein one end of the voice coil (5) is arranged in the central hole of the spring (4), and the other end of the voice coil is fixedly connected with the radiation vibrating diaphragm (6). The invention has the beneficial effects that: the radiation diaphragm structure is adopted, the flat plate is used as a sounding body, the coil is used as a driving force, and the radiation sound wave is propagated in an omnidirectional mode, so that the sound field coverage is wider, the television is convenient to mount, and people can hear more ideal sound at different angles; the low-frequency response can be lower than that of a similar loudspeaker, so that people listen to the low frequency more plump; meanwhile, the appearance is thin, the volume is small, the occupied space is small, and the application field is wider; the overall cost of the product is low.

Description

An external magnetic ultra-thin speaker and audio device

technical field

The invention relates to the technical field of electrical products, in particular to an external magnetic ultra-thin loudspeaker and an audio device.

Background technique

With the integration of TV electronic parts, the space occupied by TV can be smaller and smaller, and TV products are becoming more and more ultra-thin, and people's requirements for sound quality are constantly improving, so the size of TV speakers is required to be small. The thickness should be thin, the low frequency response should be low, the ultra-wide directivity, and the price should be low.

Most of the speakers on the market currently use cone-shaped paper cone speakers. The advantage of this vibration structure is that it is simple to manufacture and low in cost. The disadvantage is that modal resonance is easy to occur, large distortion, narrow directivity, and the size of the product itself is limited, the vibration space is large, and it cannot be thinned, which greatly limits the thickness of the TV; Magnetic design method, the advantage of this method is that it can be thinner and lighter than ordinary external magnetic speakers, but the disadvantage is that it needs to use NdFeB magnets, and the material cost is expensive.

Contents of the invention

The object of the present invention is to provide an external magnetic type ultra-thin loudspeaker in order to overcome the deficiencies of the prior art.

The present invention is achieved through the above technical solutions:

The invention provides an external magnetic type ultra-thin speaker, which comprises:

The magnetic circuit structure includes: T-shaped iron, a magnet and a washer set on the upper vertical part of the T-shaped iron, and the magnet is in contact with the horizontal part of the T-shaped iron, and the washer and the washer are in contact with the horizontal part of the T-shaped iron. a side of the magnet remote from the horizontal portion is in contact;

The radiation vibration structure includes: an elastic wave arranged on the side of the washer away from the magnet, a radiation diaphragm opposite to the elastic wave, and a voice coil, and one end of the voice coil is arranged on the The voice coil is inside the center hole of the elastic wave, and the other end is fixedly connected with the radiation diaphragm.

Preferably, a supporting structure is further included, including a bracket, the elastic wave is fixed at the bottom of the bracket, and the radiation diaphragm is fixed at the top of the bracket.

Preferably, a terminal board is connected to the outer wall of the bracket, and the terminal connected to the voice coil is fixed on the terminal board.

Preferably, a shoulder structure is provided at the joint between the vertical part of the T-shaped iron and the horizontal part, and the magnet is sleeved on the shoulder.

Preferably, the diameter of the central hole of the washer is smaller than the diameter of the central hole of the magnet, and the diameter of the central hole of the washer and the diameter of the central hole of the magnet are larger than the vertical diameter of the T-shaped iron The diameter of the part.

Preferably, the horizontal portion has a tapered groove coaxial with the vertical portion.

The present invention also provides an audio device, which includes the external magnetic type ultra-thin speaker described in any one of the above.

The beneficial effects of the present invention are: adopting the radiation diaphragm structure, using the flat plate as the sounding body, and the coil as the driving force, the radiated sound wave propagates in an omnidirectional manner, making the sound field cover wider, facilitating the installation of the TV set, and allowing people to hear it from different angles. better sound;

The low-frequency response can be lower than similar speakers, so that people can hear the low-frequency is fuller;

At the same time, the shape is thin, the volume is small, the space occupation is small, and the applicable field is wider;

Not only the material cost is low, but also the manufacturing process is simple, so that the overall cost of the product is low.

Description of drawings

Fig. 1 is a schematic structural view of an external magnetic ultra-thin speaker provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of a magnetic circuit structure provided by an embodiment of the present invention.

detailed description

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Please refer to FIG. 1 and FIG. 2. FIG. 1 is a schematic structural diagram of an external magnetic ultra-thin speaker provided by the present invention, and FIG. 2 is a schematic structural diagram of a magnetic circuit structure provided by an embodiment of the present invention.

An embodiment of the present invention provides an external magnetic ultra-thin speaker, the external magnetic ultra-thin speaker includes:

The magnetic circuit structure includes: a T-shaped iron 1, a magnet 2 and a washer 3 set on the upper vertical part of the T-shaped iron 1, and the magnet 2 is in contact with the horizontal part of the T-shaped iron 1, so Saiwas 3 is in contact with the side of the magnet 2 away from the horizontal part;

The radiation vibration structure includes: an elastic wave 4 arranged on the side of the washer 3 facing away from the magnet 2, a radiation diaphragm 6 opposite to the elastic wave 4, and a voice coil 5. One end of the coil 5 is arranged in the voice coil 5 in the center hole of the elastic wave 4 , and the other end is fixedly connected with the radiation diaphragm 6 .

In order to facilitate the understanding of the external magnetic type ultra-thin loudspeaker provided by the embodiment of the present invention, its structure will be described in detail below.

The external magnetic ultra-thin loudspeaker is mainly composed of a magnetic circuit structure, a radiation vibration structure and a supporting structure.

The magnetic circuit structure is shown in Figure 2, which is composed of a T-shaped iron 1, a magnet 2, and a washer 3. Among them, the T-shaped iron 1 is in the space where the magnet 2 has a fixed magnetic field, so that the voice coil 5 can move more In the concentrated magnetic field; the magnet 2 provides a fixed magnetic field, so that the current flowing through the voice coil 5 and the magnetic field occupied by the magnet 2 cut the magnetic force lines to generate force; the washer 3 is in the space where the magnet 2 has a fixed magnetic field, so that the voice coil 5 Able to generate greater force in a more concentrated magnetic field. In the specific setting, both the washer 3 and the magnet 2 are annular structures with a central hole, the horizontal part on the T-shaped iron 1 has a conical groove coaxial with the vertical part, and the vertical part of the T-shaped iron 1 is aligned with the horizontal part. Some joints are provided with shoulder structures, and the magnet 2 is set on the shoulders during assembly. The diameter of the central hole of the washer 3 is smaller than the diameter of the central hole of the magnet 2, and the diameter of the central hole of the washer 3 and the diameter of the central hole of the magnet 2 are larger than the diameter of the vertical part of the T-shaped iron 1. Continuing to refer to it, it can be seen that the diameter of the outer ring of the washer 3 is smaller than the diameter of the outer ring of the magnet 2 . When in use, the inherent magnetic field of the magnetic circuit structure cuts and radiates the voice coil 5 in the vibration structure to generate a magnetic field cutting force line through the input current, so that the voice coil 5 vibrates up and down, and the radiation diaphragm 6 vibrates up and down through the voice coil 5 to the air medium. Radiate sound waves.

The radiation vibration structure, referring to Fig. 1 together, is composed of a radiation diaphragm 6, an elastic wave 4 and a voice coil 5, wherein the elastic wave 4 is a ring structure with a central hole, and the voice coil 5 is stuck in the middle hole of the elastic wave 4 , so that the voice coil 5 can be fixed at the center of the magnetic circuit gap when vibrating up and down, and the voice coil 5 is glued to the center of the radiation diaphragm 6. When the magnetic field cuts the voice coil 5 and generates force to vibrate up and down, the radiation diaphragm 6 is driven Vibrates in sync, which pushes the surrounding air to vibrate, creating sound waves.

The supporting structure, refer to Fig. 1 together, it is a support 7, and this support 7 is a pot-shaped structure, and the bottom of this pot-shaped structure is provided with through hole, and the magnetic circuit structure sticks to the center of the bottom of the support 7, and radiates in the vibration structure The elastic waves 4 are symmetrically distributed and glued on both sides of the bottom center of the bracket 7 in the support structure. Specifically, the elastic waves 4 are arranged at the bottom of the bracket 7 , and the radiation diaphragm 6 is fixed on the top of the bracket 7 . The voice coil 5 is bonded to the upper end of the elastic wave 4, and the voice coil 5 is symmetrically distributed at both ends of the magnetic circuit system Zhonghua Division 3. The top of the voice coil 5 is glued to the radiation diaphragm 6, and the edge of the radiation diaphragm 6 is bonded to the support On the basin frame in the structure, a terminal board 8 is connected to the outer wall of the bracket 7 , and the terminal connected to the voice coil 5 is fixed on the terminal board 8 . During the specific connection, the outer side wall of the bracket 7 is riveted with the terminal board 8, and the terminal board 8 is connected with the voice coil 5 through the wire of the voice coil 5.

When it is working, the magnet 2 bonded to the upper and lower magnetizers in the magnetic circuit system (T-shaped iron 1, washer 3) in the middle of the upper and lower magnetizers generates a magnetic field and forms a magnetic circuit, thereby radiating with the radiation diaphragm 6 system. The voice coil 5 connected to the diaphragm 6 is bonded in the annular air gap at the center of the elastic wave 4. When the electrical signal current passes through the voice coil 5, the electromagnetic field generated by the voice coil 5 in the radiating diaphragm 6 system and the magnetic circuit drive system The magnetic field of the magnet 2 bonded up and down between the T-shaped iron 1 and the Wasser 3 interacts, causing the voice coil 5 to vibrate up and down, and the voice coil 5 is connected to the radiation diaphragm 6, and then drives the radiation diaphragm 6 to act as a piston movement, thereby pushing the surrounding air to vibrate, producing sound waves.

It can be seen from the above description that the external magnetic ultra-thin loudspeaker provided by this embodiment adopts the radiation diaphragm 6 structure, uses the flat plate as the sounding body, and the coil as the driving force, and the radiation sound wave is transmitted in an omnidirectional manner, so that the sound field covers a wider area. It is easy to install on the TV, so that people can hear more ideal sound from different angles; the low frequency response can be lower than that of similar speakers, so that people can hear the low frequency is fuller; at the same time, the shape is thin, the volume is small, the space occupation is small, and the applicable field is wider ; Not only the material cost is low, but also the manufacturing process is simple, so that the overall cost of the product is low.

The present invention also provides an audio device, which includes the external magnetic ultra-thin speaker described in any one of the above

The audio device provided in this embodiment adopts the above-mentioned external magnetic type ultra-thin speaker structure, which adopts a radiation diaphragm structure, uses a flat plate as a sounding body, and a coil as a driving force, and the radiation sound wave is transmitted in an omnidirectional manner, so that the sound field covers a wider area and is convenient. TV installation allows people to hear more ideal sound from different angles; the low-frequency response can be lower than that of similar speakers, so that people can hear the low-frequency is fuller; at the same time, the shape is thin, the volume is small, the space occupation is small, and the applicable field is wider; Not only the material cost is low, but also the manufacturing process is simple, so that the overall cost of the product is low.

The above are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention. Inside.

Claims (7)

1. An external magnetic type ultra-thin loudspeaker, is characterized in that, comprises: The magnetic circuit structure includes: T-shaped iron, a magnet and a washer set on the upper vertical part of the T-shaped iron, and the magnet is in contact with the horizontal part of the T-shaped iron, and the washer and the washer are in contact with the horizontal part of the T-shaped iron. a side of the magnet remote from the horizontal portion is in contact; The radiation vibration structure includes: an elastic wave arranged on the side of the washer away from the magnet, a radiation diaphragm opposite to the elastic wave, and a voice coil, and one end of the voice coil is arranged on the The voice coil is inside the center hole of the elastic wave, and the other end is fixedly connected with the radiation diaphragm. 2. The external magnetic type ultra-thin loudspeaker according to claim 1, characterized in that, it also includes a support structure, including a bracket, the elastic wave is fixed on the bottom of the bracket, and the radiation diaphragm is fixed on the the top of the stand. 3. The external magnetic type ultra-thin loudspeaker according to claim 2, wherein a terminal board is connected to the outer wall of the bracket, and the terminal connected to the voice coil is fixed on the terminal board. 4. The external magnetic type ultra-thin speaker according to claim 2, characterized in that, a shoulder structure is provided at the connection between the vertical part of the T-shaped iron and the horizontal part, and the magnet is sleeved on the On the shoulders. 5. The external magnetic type ultra-thin loudspeaker as claimed in claim 1, wherein the diameter of the center hole of the washer is smaller than the diameter of the center hole of the magnet, and the diameter of the center hole of the washer is the same as that of the magnet. The diameters of the central holes of the magnets are larger than the diameters of the vertical parts of the T-shaped irons. 6. The external magnetic type ultra-thin loudspeaker according to claim 5, wherein the horizontal part has a tapered groove coaxial with the vertical part. 7. An audio device, characterized by comprising the external magnetic type ultra-thin speaker according to any one of claims 1-6.