CN212910009U

CN212910009U - Ultra-thin sound box

Info

Publication number: CN212910009U
Application number: CN202021714549.4U
Authority: CN
Inventors: 刘嘉伟; 向开术
Original assignee: Shenzhen Xsound Technology Co ltd
Current assignee: Shenzhen Xsound Technology Co ltd
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2021-04-06
Anticipated expiration: 2030-08-17

Abstract

The utility model discloses an ultra-thin sound box, this ultra-thin sound box include the box, be equipped with magnet, voice coil loudspeaker voice coil, paper disc and book the ring in the box, magnet is fixed in on one side lateral wall of box, still be equipped with the fixed knot who is positioned the paper disc directly over magnet in the box and construct, the voice coil loudspeaker voice coil is fixed in on the paper disc and covers and to be located outside magnet. The utility model discloses have simple structure, the stable effect of sound production, and whole audio amplifier is ultra-thin, portable.

Description

Ultra-thin sound box

Technical Field

The utility model relates to a portable bluetooth speaker technical field especially relates to an ultra-thin audio amplifier.

Background

The Bluetooth sound box refers to a built-in Bluetooth chip, replaces sound equipment connected with traditional wires through Bluetooth connection, and achieves the purpose of convenience and rapidness through connection with Bluetooth playing equipment such as a mobile phone, a tablet personal computer or a notebook computer. At present, the bluetooth speaker uses portable audio amplifier as the owner, and the appearance is generally comparatively small and exquisite portable, and bluetooth speaker technique also relies on its convenient characteristics to be paid attention to gradually by the consumer and accept.

The Bluetooth sound box loudspeaker mainly comprises a magnet and a vibration system, wherein the magnet comprises a magnet and a soft iron core column, and the vibration system comprises a cone (vibrating diaphragm), a centering support, a voice coil, a dust cover and the like. When voice frequency current is introduced into a voice coil of the loudspeaker, the voice coil generates an alternating magnetic field under the action of the current, and the permanent magnet also generates a constant magnetic field with unchanged size and direction. The size and direction of the magnetic field generated by the voice coil are continuously changed along with the change of the audio current, so that the voice coil moves in a direction vertical to the current direction in the voice coil due to the interaction of the two magnetic fields, and the voice coil drives the vibrating membrane to vibrate due to the connection of the voice coil and the vibrating membrane, and the vibrating surface of air generates sound due to the vibration of the vibrating membrane.

The larger the current output to the voice coil, the greater the force of its magnetic field. The larger the amplitude of the diaphragm vibration, the louder the sound. The high pitch part is related to the rigidity of paper disc and shield, and the shield can improve loudspeaker paper disc rigidity, influences high frequency response, and the area size of paper disc is mainly seen to the low frequency, and the area is big more, and the low frequency performance is better, and the low frequency performance is positive correlation with the magnetism size of magnetic circuit simultaneously.

The chinese patent that the publication number is CN208623902U discloses a horn structure of ultra-thin bluetooth speaker, and it includes base and loudspeaker device, and loudspeaker device then includes drum paper, voice coil loudspeaker voice coil, bullet ripples, gasket, magnet, china department and U cup, and in the U cup was located to the voice coil loudspeaker voice coil, the voice coil loudspeaker voice coil carried out the back-and-forth movement along the U cup to drive drum paper front and back vibration, drum paper and bullet ripples outer loop are connected, and gasket, magnet, china department all set up in the voice coil loudspeaker voice coil in addition.

According to the above, the sound of the Bluetooth sound box loudspeaker is driven by the magnetic field generated between the voice coil and the magnet after the power is on to drive the drum paper to move, the damper, the washer, the U cup and the like are necessary components for fixing the magnet and the drum paper, but the whole loudspeaker sound production system has more components, so that the Bluetooth portable sound box is difficult to be further thinner.

SUMMERY OF THE UTILITY MODEL

In order to solve the defect that bluetooth speaker is difficult to more frivolous among the prior art, the utility model provides an ultra-thin speaker.

The utility model discloses a technical scheme be, an ultra-thin sound box, the power distribution box comprises a box body, be equipped with magnet, voice coil loudspeaker voice coil, paper disc and book ring in the box, its characterized in that, magnet is fixed in on the lateral wall of one side of box, still be equipped with the fixed knot who is positioned the paper disc directly over magnet in the box and construct, the voice coil loudspeaker voice coil is fixed in on the paper disc and covers and to be located outside magnet.

Preferably, the voice coil, the paper tray and the magnet are coaxially arranged.

Preferably, the fixed structure is a supporting surface shell integrally arranged with the box body.

Preferably, the middle part of the supporting surface shell is provided with an installation cavity, the paper disc is positioned at the installation cavity, the periphery of the paper disc is fixedly connected with the folding ring, and the folding ring is fixedly connected with the supporting surface shell.

Preferably, the magnet is fixedly connected to the middle position of the bottom of the box body.

Preferably, the paper disc is provided with a dust cover, the dust cover is located at the center of the paper disc, and the dust cover and the voice coil are respectively located at two sides of the paper disc.

Preferably, a circuit board is further arranged in the box body, and the voice coil is electrically connected with the circuit board.

Preferably, a battery is further arranged in the box body, and a charging seat for charging the battery is further arranged on the side wall of the box body.

Preferably, the side wall of the box body is also provided with a key, and the key is connected with the circuit board.

Compared with the prior art, the utility model discloses following beneficial effect will have:

1. the structure for installing the fixed magnet is omitted, and the elastic wave is omitted, so that the space of the sound box is more compact, and the whole sound box is lighter and thinner;

2. the magnet is directly fixed on the bottom plate of the box body, so that the structural stability is higher, and the long-term use is facilitated;

3. the paper disc is fixed by the supporting surface shell which is integrated with the box body, so that the paper disc can be positioned, the structural strength of the box body can be improved, and the structural stability of the whole sound box can be improved;

4. the whole horn system is simple and compact in structure, production difficulty and cost are reduced, and popularization is facilitated.

Drawings

The invention is explained in more detail below with reference to exemplary embodiments and the accompanying drawings, in which:

fig. 1 is a schematic cross-sectional view of the bluetooth speaker of the present embodiment.

1. A voice coil; 2. a dust cover; 3. a battery; 4. a box body; 5. a circuit board; 6. pressing a key; 7. a supporting face shell; 8. a mesh enclosure; 9. a charging seat; 10. a dust cover; 11. folding the ring; 12. a paper tray.

Detailed Description

An ultrathin sound box belongs to a portable Bluetooth sound box and comprises a box body, wherein the box body comprises side plates at four sides, a bottom plate and a mesh enclosure opposite to the bottom plate, a magnet, a voice coil and a paper disc are arranged in the box body, and when the voice coil is electrified, an air field generated by current drives the paper disc to move back and forth relative to the magnet and push air to generate sound.

Concretely, magnet snap-on is in the bottom plate intermediate position of box to saved the china department isotructure that is used for fixed magnet among the prior art, and still be provided with in the box and be located the paper disc fixed knot structure directly over magnet, the voice coil loudspeaker voice coil is fixed in on the paper disc and covers outside magnet is located, and voice coil loudspeaker voice coil, paper disc and the coaxial setting of magnet have guaranteed the normal sound production of loudspeaker system.

The fixing structure is a supporting surface shell which is integrated with the box body, in one embodiment, the periphery of the outer edge of the supporting surface shell is fixed on the side plate of the box body, a through mounting cavity is formed in the middle of the supporting surface shell, the paper disc is located at the mounting cavity and fixedly connected with a folding ring all around, the folding ring is made of flexible materials and is made into a circle of annular objects, the folding ring is bonded with the supporting surface shell through glue, the folding ring is also bonded with the paper disc through glue, and therefore the supporting surface shell positions the paper disc at the center of the sound box and the paper disc can move back and forth.

Adopt the supporting face shell to fix the paper disc, and magnet snap-on is on the bottom half, can save bullet ripples, china department etc. in the traditional loudspeaker system, also no longer need the loudspeaker plate rail for the structure of loudspeaker system is simplified by a wide margin, thereby has realized the ultra-thin design of audio amplifier, and the supporting face shell sets up as an organic whole with the box simultaneously, and magnet snap-on is also on the box, and whole structural strength is enough, also can play certain effect of strengthening box atress ability.

The paper disc is in the concave arc setting, and voice coil loudspeaker voice coil fixed connection just is located the back at the lower of paper disc, and the lower of paper disc is then fixed with the shield, and the shield corresponds the setting in the inside and outside both sides of paper disc with the voice coil loudspeaker voice coil. The shield can be made for the metal, can place dust and debris and fall into the voice coil loudspeaker voice coil in, also can promote loudspeaker's high frequency curve for loudspeaker can reach higher frequency.

Similarly, a circuit board fixed on the bottom plate is arranged in the box body, and the circuit board is electrically connected with the voice coil and used for receiving Bluetooth audio signals transmitted by external equipment and amplifying the received signals to the voice coil. The outer side surface of the side plate of the box body is also provided with a key, and the key is connected with the circuit board and can be used for controlling the operations of turning on and off, bending up and down, increasing and decreasing volume and the like of the sound box.

The box body is also internally provided with a battery for supplying power to each part, and the side plate of the box body is provided with a charging seat for charging the battery, so that the battery can be recycled for many times.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The utility model provides an ultra-thin sound box, includes the box, be equipped with magnet, voice coil loudspeaker voice coil, paper disc and book ring in the box, its characterized in that, magnet is fixed in on the lateral wall of one side of box, still be equipped with in the box and be located the fixed knot structure directly over magnet with the paper disc, the voice coil loudspeaker voice coil is fixed in on the paper disc and covers and be located outside magnet.

2. The ultra-thin sound box of claim 1, wherein the voice coil, the paper tray and the magnet are coaxially disposed.

3. The ultra-thin sound box of claim 1, wherein the fixing structure is a supporting panel integrally formed with the box body.

4. The ultra-thin sound box of claim 3, wherein the supporting panel has a mounting cavity at the middle, the paper tray is located in the mounting cavity and is fixedly connected with a folding ring at the periphery, and the folding ring is fixedly connected with the supporting panel.

5. The ultra-thin sound box of claim 1, wherein the magnet is fixedly connected to a bottom middle portion of the box body.

6. The ultra-thin sound box of claim 1, wherein a dust cover is disposed on the paper tray, the dust cover is located at a center of the paper tray, and the dust cover and the voice coil are respectively located at two sides of the paper tray.

7. The ultra-thin sound box of claim 1, wherein a circuit board is further disposed in the box, and the voice coil is electrically connected to the circuit board.

8. The ultra-thin sound box of claim 1, wherein a battery is further disposed in the box, and a charging seat for charging the battery is further disposed on the sidewall of the box.

9. The ultra-thin sound box of claim 1, wherein a button is further disposed on the side wall of the box body, and the button is connected to the circuit board.