CN110858939A

CN110858939A - Phase reversal type sound box

Info

Publication number: CN110858939A
Application number: CN201810962802.9A
Authority: CN
Inventors: 李妙虹
Original assignee: Taishan Zhong Shen Sound Technology Co Ltd
Current assignee: Taishan Zhong Shen Sound Technology Co Ltd
Priority date: 2018-08-22
Filing date: 2018-08-22
Publication date: 2020-03-03

Abstract

The invention relates to a phase inversion type sound box, which is provided with a box body, wherein the box body is provided with a loudspeaker mounting hole and a phase inversion hole, the loudspeaker mounting hole is provided with a loudspeaker, the phase inversion hole is provided with a first phase inversion tube, and the first phase inversion tube is detachably arranged in the phase inversion hole; the length and the pipe diameter of the second inverter pipe are smaller than those of the first inverter pipe, one end of the second inverter pipe is provided with an installation part matched with the inverter hole, and the second inverter pipe is detachably installed in the inverter hole through the installation part. The invention relates to a phase inversion type sound box, wherein a phase inversion tube can be replaced; the user can select to use the phase reversal tubes with different tube diameters and lengths according to the actual situation of the sound box so as to obtain the required sound box effect.

Description

Phase reversal type sound box

Technical Field

The invention relates to a phase inversion type sound box, in particular to a sound box with a replaceable and detachable phase inversion tube.

Background

A loudspeaker is a device that can convert an audio signal into sound.

The closed sound box is a loudspeaker system with the simplest structure and is formed by arranging a loudspeaker unit in a fully-sealed box body. The phase inversion type sound box is a sound box with phase inversion holes on the panel of the sound box, and is different from a closed type sound box in that a phase inversion tube is arranged on the panel of the sound box, when the sound box works, sound waves radiated from the back of the sound box are radiated to the front of the sound box after passing through the phase inversion tube, are superposed with the sound waves in front of the sound box, and then are radiated forwards together, so that the low-frequency effect is enhanced.

The general principle of inverter tube design is the helmholtz resonance principle formula:

wherein f is₀Is the lowest resonance frequency, c is the acoustic velocity, S is the cross-sectional area of the pipe, d is the diameter of the pipe, l is the length of the pipe, and V is the volume of the cavity. Theoretical values are designed according to the formula, and the inverter tube is fixedly installed after the theoretical values are tested in an actual sound box.

The prior phase inversion type sound box has the following defects: 1. the volume of the inverter tube is fixed, so that the sound effect is fixed; 2. the phase reversal pipe and the sound box shell are fixedly installed and cannot be detached and replaced; 3. once the inverter tube type sound box is manufactured, the sound box cannot be converted into a closed type sound box for use.

Disclosure of Invention

The invention aims to provide a phase inversion type sound box, which is used for solving the defects of the prior art.

A phase inversion type sound box has a box body, the box body is provided with a loudspeaker mounting hole and a phase inversion hole, the loudspeaker mounting hole is provided with a loudspeaker, the phase inversion hole is provided with a first phase inversion tube, and the first phase inversion tube is detachably arranged in the phase inversion hole; the length and the pipe diameter of the second inverter pipe are smaller than those of the first inverter pipe, one end of the second inverter pipe is provided with an installation part matched with the inverter hole, and the second inverter pipe is detachably installed in the inverter hole through the installation part.

Compared with the prior art, the phase inversion type sound box has the advantages that the phase inversion tube can be replaced; the user can select to use the phase reversal tubes with different tube diameters and lengths according to the actual situation of the sound box so as to obtain the required sound box effect.

Further, a sealing head is included and is removably mounted in the inverter bore.

Meanwhile, the invention is also provided with a sealing head, the inverter tube is disassembled, and the sealing head is installed, so that the invention can be used as a closed sound box to meet different requirements of users.

Preferably, the phase reversal hole is provided with a thread; the first inverter tube, the mounting portion and the seal head are respectively provided with threads which are engaged with threads on the inverter bore.

The detachable mode is conveniently realized by adopting a thread engagement mode.

Furthermore, sound absorption materials are arranged on the installation part and the part of the sealing head extending into the box body.

The sound absorbing material is arranged on the casing inside the box body, the sound absorbing material is additionally arranged on the part, extending into the box body, of the mounting part and the sealing head, standing waves can be further lightened and prevented from being generated, and therefore sound is not interfered by standing waves and can be heard cleanly and clearly.

Further, this box still includes bluetooth module, and this bluetooth module embedding is installed in this box.

Further, the box body also comprises a power supply module which is embedded and installed in the box body.

This power module provides the power, and external sound source signal is received and handled to this bluetooth module, and the audio amplifier during operation, this speaker is put out this sound source enlargement.

Furthermore, the side of the box body is also provided with a breathing lamp.

The setting of breathing lamp can remind the user that this audio amplifier is in operating condition.

Further, the cabinet further comprises a speaker cover; the loudspeaker cover is arranged on the loudspeaker surface of the loudspeaker.

The speaker cover is used to prevent the speaker from being damaged.

Compared with the prior art, the phase inversion type sound box has the advantages that the phase inversion tube can be replaced; the user can select to use the inverter tubes with different tube diameters and lengths according to the actual situation of the sound box, namely, the volume of the inverter tube is changed, so that the required sound box effect is obtained. Meanwhile, the invention is also provided with a sealing head, the inverter tube is disassembled, and the sealing head is installed, so that the invention can be used as a closed sound box to meet different requirements of users.

In order that the invention may be more clearly understood, specific embodiments thereof will be described below with reference to the accompanying drawings.

Drawings

Fig. 1 is a schematic structural view of the inverted-phase type sound box of the present invention.

Fig. 2 is a schematic diagram of the adjusted structure of the inverted-phase type loudspeaker box of the invention.

Fig. 3 is a schematic structural diagram of another application of the inverted-phase type sound box of the present invention.

In the figure, 10-box, 20-loudspeaker, 30-first inverter tube, 40-second inverter tube, 42-mounting part, 50-sealing head, 60-bluetooth module, 70-power module, 80-loudspeaker cover, A-sound-absorbing cotton.

Detailed Description

In order to solve the defects of the prior art, the invention provides an inverter tube sound box, wherein the inverter tube can be detached and replaced and can be converted into a closed sound box.

The following description is given in conjunction with specific examples.

Please refer to fig. 1, which is a schematic structural diagram of the inverted speaker of the present invention.

As shown in fig. 1, a phase inversion type speaker box has a cabinet 10, a speaker mounting hole and an inverter hole are formed in the cabinet 10, a speaker 20 is mounted in the speaker mounting hole, and a first inverter tube 30 is mounted in the inverter hole in a detachable manner, preferably in a screw-engagement connection, i.e., the inverter hole is provided with a screw thread which is engaged with a screw thread formed on an outer wall of the first inverter tube 30. The inverter tube is attached or detached by screwing or unscrewing the first inverter tube 30, and the inverter tube is detached.

Please refer to fig. 2, which is a schematic diagram of the adjusted structure of the inverted speaker according to the present invention.

As shown in fig. 2, the phase inversion type loudspeaker box of the present invention further includes a second inverter tube 40, the length and the pipe diameter of the second inverter tube 40 are both smaller than those of the first inverter tube 30, and one end of the second inverter tube 40 has a mounting portion 42 matching with the inverter hole, the second inverter tube 40 is detachably mounted in the inverter hole through the mounting portion 42, preferably, in a thread engagement connection, that is, the mounting portion 42 is provided with a thread engaging with a thread provided on the inverter hole. The first inverter tube 30 is screwed out, and then the second inverter tube 40 is screwed in, so that the inverter tube can be replaced.

Please refer to fig. 3, which is a schematic structural diagram of another application of the inverted speaker of the present invention.

As shown in fig. 3, the inverted acoustic enclosure of the present invention further comprises a sealing head 50, wherein the sealing head 50 is mated with the inverted aperture and is removably mounted in the inverted aperture, preferably in a threaded engagement, i.e., the sealing head 50 is provided with threads that are intermeshed with the threads provided in the inverted aperture. After the inverter tube is screwed out, the sealing head 50 is screwed in, and the conversion from the inverter type speaker to the closed type speaker can be realized.

Meanwhile, the portions of the mounting portion 42 and the sealing head 50 extending into the cabinet 10 are provided with sound-absorbing material, preferably sound-absorbing cotton a, to further reduce and prevent the generation of standing waves, so that the sound emitted from the phase inversion type sound box of the present invention is not interfered by standing waves and sounds clean and clear.

Meanwhile, the inverted speaker system of the present invention further includes a bluetooth module 60, a power module 70, a breathing lamp (not shown), and a speaker cover 80. The bluetooth module 60 and the power module 70 are embedded in the housing 10, and the speaker cover 80 is concentrically attached to the speaker surface of the speaker 20 to protect the speaker 20. A breathing lamp (not shown) is disposed on the surface of the cabinet 10, and when the speaker box starts to operate, the breathing lamp can remind the user that the speaker box is in an operating state.

When the phase inversion type loudspeaker box is used, the first phase inversion tube 30 or the second phase inversion tube 40 is selected to be screwed into the phase inversion holes according to different requirements of users, so that different loudspeaker box effects are obtained.

When the loudspeaker box is used as a closed loudspeaker box, the inverter tube is screwed out of the inverter hole, the sealing head 50 is screwed into the inverter hole, and after the screw-on, a closed sound cavity is formed in the box body 10, so that the inverter loudspeaker box is changed into a closed loudspeaker box for use.

Compared with the prior art, the phase inversion type sound box has the advantages that the phase inversion tube can be replaced and detached, and meanwhile, the phase inversion type sound box can be freely selected from the phase inversion type sound box and the closed type sound box. Different sound box effects are obtained by screwing in the phase reversal pipes with different lengths and pipe diameters. Meanwhile, the phase reversal pipe movably connected with the box body can be screwed out of the box body, and after the sealing head is tightly connected with the phase reversal hole, the sound box can be used as a closed sound box. Compared with the existing sound box, the phase inversion type sound box is more flexible and can meet different requirements of users.

The present invention is not limited to the above-described embodiments, and various modifications and variations of the present invention are intended to be included within the scope of the claims and the equivalent technology of the present invention if they do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a phase inversion formula audio amplifier, has a box, seted up speaker mounting hole and paraphase hole on the box, speaker is installed to the speaker mounting hole, paraphase hole department installs first paraphase pipe, its characterized in that:

the first inverter tube is detachably mounted in the inverter hole;

still include the second inverter tube, the length and the pipe diameter of second inverter tube all are less than first inverter tube, and its one end have with paraphase hole assorted installation department, the second inverter tube passes through the installation department is in order can dismantle the mode install in the paraphase hole.

2. The inverted speaker of claim 1, wherein: and a sealing head removably mounted in the inverter bore.

3. The inverted speaker of claim 2, wherein: the phase reversal hole is provided with a thread; the first phase inversion tube, the mounting part and the sealing head are respectively provided with threads which are meshed with the threads on the phase inversion hole.

4. The inverted speaker of claim 3, wherein: the installation department with the sealing head stretches into part in the box is provided with sound absorbing material.

5. The inverted speaker of claim 4, wherein: the box body further comprises a Bluetooth module, and the Bluetooth module is embedded in the box body.

6. The inverted speaker of claim 5, wherein: the box body also comprises a power supply module, and the power supply module is embedded in the box body.

7. The inverted speaker of claim 6, wherein: and a breathing lamp is also arranged on the side surface of the box body.

8. The inverted speaker of claim 7, wherein: further comprising a speaker cover; the speaker cover is disposed on the speaker loud face.