CN205545840U - A New Passive Radiator Speaker - Google Patents

Abstract

The utility model relates to the technical field of sound boxes, in particular to a novel passive radiator sound box; including audio amplifier main part, speaker and passive radiator set up respectively in the inner chamber of audio amplifier main part, be provided with the ventilative buffer layer that produces the cushioning effect to the air current between speaker and the passive radiator. The utility model arranges a ventilating buffer layer between the loudspeaker and the passive radiator to buffer the air flow; the air current that produces during the speaker vibration becomes soft relatively after ventilative buffer layer, can not cause violent impact to passive radiator, the tone quality of improvement low frequency that can be obvious lets the low frequency sound cleaner, and the definition of well, high frequency also obtains corresponding improvement simultaneously.

Description

A New Passive Radiator Speaker

technical field

The utility model relates to the technical field of sound boxes, in particular to a novel passive radiator sound box.

Background technique

In order to obtain better low-frequency effects, speakers generally use guide tubes and passive radiators to increase the low-frequency dive. The principle is that at the resonance frequency point of the speaker, the wind speed of the guide tube and the vibration speed of the passive radiator reach the maximum, and the sound The output is mainly from these two, and the vibration amplitude of the speaker is the smallest at this time, which not only enhances the low-frequency output, but also protects the speaker from the damage of the low-frequency signal to a certain extent. As portable bluetooth speakers are becoming more and more popular, speakers are generally developing towards miniaturization, and the advantages of passive radiators over guide tubes have emerged. Unlike guide tubes, which occupy the internal volume, it is more convenient for speakers. internal structure design. The design of using the passive radiator will bring some defects. When the speaker is working at low frequency, the paper cone on the back of the speaker will push the air inside the box to generate an impact airflow. If the force of the impact airflow on the passive radiator is uneven, it will cause passive The radiator vibrates, pulling on the suspension and creating hum, especially in the low frequencies. If the passive radiator swings too violently and the energy cannot be attenuated in time, it will in turn affect the vibration of the horn diaphragm and affect the clarity of the mid-high frequency sound of the horn.

Utility model content

The utility model provides a novel passive radiator sound box aiming at the problems of the prior art, which can obviously improve the sound quality of the low frequency, make the low frequency sound cleaner, and simultaneously improve the clarity of the middle and high frequency accordingly.

In order to solve the above technical problems, the utility model adopts the following technical solutions:

A novel passive radiator sound box, comprising a sound box main body, a loudspeaker and a passive radiator, the loudspeaker and the passive radiator are respectively arranged in the inner cavity of the sound box main body, and the loudspeaker and the passive radiator are arranged Breathable cushioning cushions airflow.

Wherein, the speaker main body includes a speaker panel, a speaker frame and a speaker backboard, the speaker panel and the speaker backboard are respectively detachably connected to the speaker frame, and the speaker panel and the speaker backboard are respectively provided with positioning recesses. The two ends of the air-permeable buffer layer are respectively fixed in the corresponding positioning grooves.

Wherein, the loudspeaker includes a first loudspeaker and a second loudspeaker, the passive radiator is arranged in the middle of the first loudspeaker and the second loudspeaker, and the passive radiator and the first loudspeaker and the second loudspeaker are respectively One layer of the breathable buffer layer is provided, and the two layers of breathable buffer layers separate the main body of the sound box into three independent cavities.

Wherein, the passive radiator includes a first passive radiator and a second passive radiator, and the first loudspeaker, the first passive radiator and the second loudspeaker are all fixedly installed on the sound box panel, and the The second passive radiator is fixedly installed on the back panel of the speaker.

Wherein, the first passive radiator and the second passive radiator are arranged symmetrically, and an airflow barrier for reducing the mutual influence of airflow is arranged in the middle of the first passive radiator and the second passive radiator .

Wherein, the air flow barrier includes a blocking sheet, a fixing ring and several connecting sheets for connecting the blocking sheet and the fixing ring, and the blocking sheet is fixedly connected to the speaker panel or the speaker backboard through the fixing ring.

Wherein, the airflow blocking part is a plastic baffle, and the airflow blocking part is integrally formed with the sound box backboard.

Preferably, the air-permeable buffer layer is a sponge layer or a mesh layer.

The beneficial effects of the utility model:

The utility model provides a new type of passive radiator sound box. A breathable buffer layer that buffers the airflow is provided between the speaker and the passive radiator; the airflow generated when the speaker vibrates passes through the breathable buffer layer. Soft, will not cause violent impact on the passive radiator, can significantly improve the sound quality of the low frequency, make the low frequency sound cleaner, and at the same time, the clarity of the middle and high frequency is also improved accordingly.

Description of drawings

Fig. 1 is a perspective view of a novel passive radiator sound box of the utility model.

Fig. 2 is a perspective view of another viewing angle of a novel passive radiator sound box of the present invention.

Fig. 3 is a schematic diagram of the internal structure of a new passive radiator sound box of the present invention.

Fig. 4 is a structure exploded view of a new passive radiator sound box of the utility model.

Reference numerals in FIGS. 1 to 4 include:

1—Speaker panel 2—Speaker frame

3—Speaker back panel 4—First speaker

5—Second Speaker 6—Breathable Buffer

7—First Passive Radiator 8—Second Passive Radiator

9—Airflow barrier 10—Barrier sheet

11—fixed ring 12—connecting piece.

detailed description

In order to facilitate the understanding of those skilled in the art, the utility model will be further described below in conjunction with the embodiments and accompanying drawings, and the contents mentioned in the implementation modes are not limitations of the utility model. Below in conjunction with accompanying drawing, the utility model is described in detail.

A novel passive radiator sound box provided by the utility model includes a sound box main body, a loudspeaker and a passive radiator. The loudspeaker and the passive radiator are respectively arranged in the inner cavity of the sound box main body. A breathable buffer layer 6 that buffers the airflow is arranged between the source radiators. Preferably, the breathable buffer layer 6 is a sponge layer or mesh cloth. The shape of the breathable buffer layer 6 is not limited, it can be square, circular or any other shape, and it is set according to the shape of the sound box in practical application. The air-permeable buffer layer 6 is not limited to sponge or mesh, as long as it can buffer the airflow, other air-permeable materials can also be used instead, and the air-permeable performance of the material depends on the specific debugging conditions of the speaker. In the utility model, the sponge layer is the best choice material for the air-permeable buffer layer 6, and the sponge layer can weaken the cabinet resonance caused by standing waves, which is equivalent to the effect of filling sound-absorbing cotton in the usual sound box.

Wherein, the speaker body includes a speaker panel 1, a speaker frame 2 and a speaker backboard 3, the speaker panel 1 and the speaker backboard 3 are detachably connected to the speaker frame 2 respectively, and the speaker panel 1 and the speaker backboard 3 are respectively provided with positioning grooves (not marked in the figure), and the two ends of the breathable buffer layer 6 are fixed on the positioning grooves. When assembling, align the sponge layer with the positioning groove and press it in place. The position where the sponge layer is in contact with the positioning groove should be glued for further fixing, so as to prevent the sponge layer from deviating from the original position under the push of the airflow and affecting other parts. part.

In the present utility model, the loudspeaker includes a first loudspeaker 4 and a second loudspeaker 5, the passive radiator is arranged in the middle of the first loudspeaker 4 and the second loudspeaker 5, and the passive radiator and the first loudspeaker A breathable buffer layer 6 is arranged between the speaker 4 and the second speaker 5 respectively, and the two layers of breathable buffer layers 6 divide the main body of the speaker into three independent cavities. As shown in Figure 3, two layers of sponge layers are arranged between the loudspeaker and the passive radiator, and the inner cavity of the speaker body is divided into three parts, and the left and right sides are the cavities of the first loudspeaker 4 and the second loudspeaker 5 respectively. body, the middle is the cavity of the passive radiator, when the first loudspeaker 4 and the second loudspeaker 5 vibrate to generate airflow pressure inside the speaker body, the airflow will impact towards the middle cavity, and the sponge layer will buffer the airflow. After damping by the sponge, the speed of the airflow decreases, and the movement state of the airflow transitions from rapid impact to slow extrusion around, which can evenly release the pressure on the passive radiator to promote its radiation bass, avoiding the violent impact of the airflow on passive radiation A certain part on the device causes shaking vibration to produce abnormal sound.

It can be seen that the airflow generated when the speaker vibrates becomes relatively soft after passing through the sponge layer, and will not cause violent impact on the passive radiator. The clarity of the frequency is also improved accordingly.

In the present utility model, the passive radiator includes a first passive radiator 7 and a second passive radiator 8, the speaker panel 1 is provided with three installation holes, the first speaker 4, the first Both the passive radiator 7 and the second loudspeaker 5 are fixedly installed on the speaker panel 1, the speaker backboard 3 is provided with a mounting hole corresponding to the first passive radiator 7, and the second passive radiator 8 is fixedly installed On the back panel 3 of the speaker. When the speaker is vibrating, the two passive radiators on this speaker vibrate at the same time, which has better low-frequency sound quality.

In the present utility model, the first passive radiator 7 and the second passive radiator 8 are symmetrically arranged, and the middle of the first passive radiator 7 and the second passive radiator 8 is provided for reducing The airflow barrier 9 that the airflow interacts with when vibrating. The airflow barrier 9 is at the same distance from the first passive radiator 7 and the second passive radiator 8, which can effectively reduce the mutual influence of the airflow generated when the front and rear passive radiators vibrate.

In the present utility model, the air flow barrier 9 includes a blocking piece 10, a fixing ring 11 and several connecting pieces 12 for connecting the blocking piece 10 and the fixing ring 11, and the blocking piece 10 connects with the fixing ring 11. The speaker panel 1 or the speaker back panel 3 are fixedly connected. Wherein, the airflow barrier 9 is a plastic barrier, and the airflow barrier 9 is integrally formed with the sound box backboard 3 . The fixing ring 11 can be fixed on the speaker panel 1 or the speaker backboard 3 by glue and screws, or can be integrally injected with the speaker panel 1 or the speaker backboard 3 .

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model is disclosed as above with the preferred embodiment, it is not used to limit the utility model. Anyone who is familiar with the utility model Professional technicians, without departing from the scope of the technical solution of the present utility model, should use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes, but if they do not depart from the technical solution of the present utility model, the The utility model technology refers to any simple modification, equivalent change and modification made to the above embodiments, which all belong to the scope of the utility model technical solution.

Claims (8)

1. A novel passive radiator sound box, comprising a sound box main body, a loudspeaker and a passive radiator, the loudspeaker and the passive radiator are respectively arranged in the inner cavity of the main body of the sound box, it is characterized in that: the loudspeaker and the passive radiator An air-permeable buffer layer is provided between the source radiators to buffer the airflow. 2. A novel passive radiator sound box according to claim 1, characterized in that: the main body of the sound box comprises a sound box panel, a sound box frame and a sound box backboard, and the sound box panel and the sound box backboard are respectively connected to the outside of the sound box. The frame is detachably connected, the speaker panel and the speaker back panel are respectively provided with positioning grooves, and the two ends of the breathable buffer layer are respectively fixed in the corresponding positioning grooves. 3. A novel passive radiator sound box according to claim 2, characterized in that: said speaker comprises a first speaker and a second speaker, and said passive radiator is arranged between the first speaker and the second speaker In the middle, and between the passive radiator and the first loudspeaker and the second loudspeaker, one layer of the breathable buffer layer is respectively arranged, and the two layers of breathable buffer layers separate the main body of the speaker into three independent cavities. 4. A novel passive radiator sound box according to claim 3, characterized in that: said passive radiator includes a first passive radiator and a second passive radiator, said first loudspeaker, Both the first passive radiator and the second loudspeaker are fixedly installed on the panel of the sound box, and the second passive radiator is fixedly installed on the back panel of the sound box. 5. A novel passive radiator sound box according to claim 4, characterized in that: the first passive radiator and the second passive radiator are arranged symmetrically, and the first passive radiator and the second passive radiator The middle of the two passive radiators is provided with an air flow barrier for reducing the mutual influence of air flow. 6. A new type of passive radiator sound box according to claim 5, characterized in that: the air flow barrier includes a blocking piece, a fixing ring, and several connecting pieces for connecting the blocking piece and the fixing ring, The blocking piece is fixedly connected with the speaker panel or the speaker backboard through the fixing ring. 7. A new type of passive radiator sound box according to claim 5, characterized in that: the airflow barrier is a plastic baffle, and the airflow barrier is integrally formed with the backboard of the sound box. 8. A new passive radiator sound box according to any one of claims 1 to 7, characterized in that: the air-permeable buffer layer is a sponge layer or a mesh layer.