CN214507364U

CN214507364U - Low-frequency sound box

Info

Publication number: CN214507364U
Application number: CN202023163460.6U
Authority: CN
Inventors: 曾山
Original assignee: Maloney Guangzhou Technology Development Co ltd
Current assignee: Maloney Guangzhou Technology Development Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-10-26
Anticipated expiration: 2030-12-23

Abstract

The utility model discloses a low frequency sound box, including shell, initiative sound production unit and passive sound production unit, initiative sound production unit install in on the shell, passive sound production unit install in the shell, passive sound production unit includes passive radiator, vibrating bin and connecting pipe, passive radiator installs on the vibrating bin, and sets up towards initiative sound production unit direction, connecting pipe one end with the vibrating bin intercommunication, the other end and external environment intercommunication, this low frequency sound box low frequency broadcast are effectual.

Description

Low-frequency sound box

Technical Field

The utility model relates to an audio amplifier technical field especially relates to a low frequency audio amplifier.

Background

A speaker refers to a device that can convert an audio signal into sound. The popular way is that a power amplifier is arranged in a main box body or a bass box body of the sound box, and the sound is emitted back by the sound box after the audio signal is amplified, so that the sound is increased.

The loudspeaker box is a terminal of the whole sound system and is used for converting audio electric energy into corresponding sound energy and radiating the sound energy into a space. It is an extremely important component of an audio system and is responsible for the task of converting electrical signals into acoustic signals for direct listening by the human ear.

And current audio amplifier is for improving the broadcast effect of low frequency sound, installs a plurality of passive radiators additional in the side of audio amplifier usually, but the space of audio amplifier side is limited (for reducing the audio amplifier volume, the area of its side all is less than the positive area of audio amplifier generally), and passive radiator's low frequency broadcast effect is relevant rather than the area, the big better low frequency effect of area, it is still not good to lead to current audio amplifier its low frequency broadcast effect after installing passive radiator additional.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a low-frequency loudspeaker box, the low-frequency playing effect is good.

The purpose of the utility model is realized by adopting the following technical scheme:

the utility model provides a low frequency sound box, includes shell, initiative sound production unit and passive sound production unit, initiative sound production unit install in on the shell, passive sound production unit install in the shell, passive sound production unit includes passive radiator, vibrating bin and connecting pipe, passive radiator installs on the vibrating bin, and sets up towards initiative sound production unit direction, connecting pipe one end with vibrating bin intercommunication, the other end and external environment intercommunication.

Further, the vibration case sets up initiative sound production unit rear, the vibration case has front and back, openly face towards initiative sound production unit, passive radiator is provided with two, and two passive radiator sets up respectively the front reaches the back.

Further, the active sound generating unit comprises a high pitch loudspeaker and a mid-bass loudspeaker.

Further, the connecting pipe is provided with an opening, and the opening and the active sound generating unit are arranged on the front face of the shell.

Further, the opening is arranged in a trumpet shape.

Furthermore, an inlet for the passive sound generating unit to enter is formed in the top end of the shell, a clamping plate is arranged on the side face of the connecting pipe, and the clamping plate is suitable for the passive sound generating unit to stretch into the inlet and is clamped and fixed with the inlet.

Furthermore, a clamping groove for accommodating the opening is formed in the side surface of the inlet.

Further, a protection net is installed at the opening position.

Compared with the prior art, the beneficial effects of the utility model reside in that:

compare in setting up passive radiator in the audio amplifier side, this application sets up passive radiator in the shell to towards initiative sound producing unit direction setting, make passive radiator's area possible initiative sound producing unit size, be far away than with passive radiator setting in the audio amplifier side, the low frequency effect of audio amplifier is good.

Drawings

Fig. 1 is a schematic structural view of a low frequency sound box of the present invention;

fig. 2 is a schematic structural view of a low frequency sound box housing of the present invention;

fig. 3 is a schematic structural view of a passive sounding unit of a low-frequency sound box of the present invention;

fig. 4 is an exploded view of the low frequency speaker of the present invention.

The figure is as follows: 1. a housing; 11. an inlet; 12. a card slot; 13. a protection net; 2. an active sound generating unit; 21. a high pitch loudspeaker; 22. a mid-bass speaker; 3. a passive sound-emitting unit; 31. a passive radiator; 32. a vibration box; 33. a connecting pipe; 331. an opening; 332. and (4) clamping the board.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1-4, the low frequency sound box includes a housing 1, an active sound unit 2 and a passive sound unit 3, the active sound unit 2 is installed on the housing 1, the passive sound unit 3 is installed in the housing 1, the passive sound unit 3 includes a passive radiator 31, a vibration box 32 and a connecting pipe 33, the passive radiator 31 is installed on the vibration box 32 and is set towards the direction of the active sound unit 2, one end of the connecting pipe 33 is communicated with the vibration box 32, and the other end is communicated with the external environment.

Compared with the passive radiator 31 arranged on the side face of the sound box, the passive radiator 31 is arranged in the shell 1 and arranged towards the direction of the active sound generating unit 2, so that the size of the active sound generating unit 2 can be achieved by the area of the passive radiator 31, the passive radiator 31 is far larger than the passive radiator 31 arranged on the side face of the sound box, and the low-frequency effect of the sound box is good; and set up passive radiator 31 in the audio amplifier side, when playing, a majority space need be vacated to the audio amplifier both sides, otherwise will influence passive radiator 31's broadcast effect, and place passive radiator 31 in the shell 1 to through connecting pipe 33 with the sound that passive radiator 31 vibration produced with the sound that initiative sound generating unit 2 produced the sound syntropy spread out, then can not produce above-mentioned situation.

In operation, the active sound generating unit 2 vibrates to generate sound, and the passive radiator 31 vibrates synchronously after receiving the airflow generated by the active sound generating unit 2 and drives the vibration box 32 to vibrate by air to generate low-frequency sound, and the generated low-frequency sound is transmitted to the outside from the connecting pipe 33.

Preferably, the connection tube 33 has an opening 331, and the opening 331 and the active sound unit 2 are both disposed on the front surface of the housing 1, so that the sound generated by the passive sound unit 3 can be emitted in the same direction as the active sound unit 2, thereby improving the playing effect.

Meanwhile, the opening 331 is trumpet-shaped to enlarge the volume of low-frequency sound and improve the low-frequency playing effect of the sound box.

Preferably, the vibration box 32 is disposed behind the active sound generating unit 2, the vibration box 32 has a front surface and a back surface, the front surface faces the active sound generating unit 2, the number of the passive radiators 31 is two, and the two passive radiators 31 are disposed on the front surface and the back surface respectively, and by disposing the passive radiators 31 on the front surface and the back surface of the vibration box 32, the low-frequency playing effect of the sound box can be further improved.

Preferably, the active sound unit 2 comprises a tweeter 21 and a midbass speaker 22.

For the installation of convenient passive sound generating unit 3, this application sets up the entry 11 that supplies passive sound generating unit 3 to get into on 1 top of shell to in the user packs passive sound generating unit 3 into shell 1, simultaneously, connecting pipe 33 side is provided with cardboard 332, cardboard 332 is suitable for when passive sound generating unit 3 stretches into entry 11 and holds fixedly with entry 11 card, in order to make things convenient for user's dismouting passive sound generating unit 3.

Preferably, the side of the inlet 11 is opened with a slot 12 for accommodating the opening 331, so that the opening 331 is exposed out of the housing 1, and the side of the opening 331 can be clamped with the slot 12, so as to further improve the stability of the passive sound generating unit 3 during installation.

The position of the opening 331 is provided with a protection net 13 to prevent foreign matters from entering the opening 331 and affecting the playing effect.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A low frequency sound box is characterized in that: including shell, initiative sound production unit and passive sound production unit, initiative sound production unit install in on the shell, passive sound production unit install in the shell, passive sound production unit includes passive radiator, vibrating bin and connecting pipe, passive radiator installs on the vibrating bin, and sets up towards initiative sound production unit direction, connecting pipe one end with vibrating bin intercommunication, the other end and external environment intercommunication.

2. The low frequency sound box of claim 1, wherein: the vibrating box sets up initiative sound production unit rear, the vibrating box has front and back, openly face towards initiative sound production unit, passive radiator is provided with two, and two passive radiator sets up respectively openly reaches the back.

3. The low frequency sound box of claim 1, wherein: the active sounding unit comprises a high pitch loudspeaker and a mid-low pitch loudspeaker.

4. The low frequency sound box of claim 1, wherein: the connecting pipe has an opening, the opening reaches initiative sound production unit all sets up the front of shell.

5. The low frequency sound box of claim 4, wherein: the opening is arranged in a trumpet shape.

6. The low frequency sound box of claim 4, wherein: the top end of the shell is provided with an inlet for the passive sound generating unit to enter, the side face of the connecting pipe is provided with a clamping plate, and the clamping plate is suitable for clamping and fixing the passive sound generating unit with the inlet when the passive sound generating unit extends into the inlet.

7. The low frequency sound box of claim 6, wherein: the side surface of the inlet is provided with a clamping groove for accommodating the opening.

8. The low frequency sound box of claim 4, wherein: and a protection net is arranged at the opening position.