An inverted phase speaker

Abstract

The utility model provides a kind of inverter type sound box, the sound box includes box and is located on the inverter pipe of the box, the inverter pipe has tube cavity, the side wall of the inverter pipe is equipped with connecting pipe, the inner cavity of the connecting pipe is communicated the tube cavity, the connecting pipe is connected with adjustable plug, the size of the inner cavity is changed by adjusting the plug.The utility model can change the size of the inner cavity by adjusting the plug, so that the speed of airflow generated by different frequency bands of sound is adapted to the buffering effect.

Description

Technical Field

[0001] This utility model relates to a speaker, and more particularly to a bass-reflex speaker. Background Technology

[0002] A bass-reflex speaker, also known as a bass-reflex enclosure, is a speaker with a bass reflex port or similar structure inside the cabinet. This allows the sound waves from the speaker inside the cabinet to radiate outwards, where they overlap with the sound waves in front of the speaker and radiate forward together, thus enhancing the low-frequency effect. In current technology, the bass reflex port is simply a tube and does not provide airflow buffering; moreover, it is only suitable for enhancing sound in a specific frequency range. Utility Model Content

[0003] Therefore, it is necessary to provide a bass-reflex speaker that can be used for sound enhancement effects in different frequency ranges.

[0004] This utility model provides a bass-reflex speaker, the speaker including a cabinet and a bass reflex tube disposed on the cabinet, the bass reflex tube having a cavity, a connecting pipe provided on the side wall of the bass reflex tube, the inner cavity of the connecting pipe communicating with the cavity, the connecting pipe being connected to an adjustable plug, the size of the inner cavity being changed by adjusting the plug.

[0005] Furthermore, the plug includes a threaded portion and a sealing portion located at the inner end. The threaded portion is threadedly connected to the connecting pipe to adjust the plug, and the sealing portion always remains in contact with the inner wall of the connecting pipe.

[0006] Furthermore, the inner end face of the plug is a concave arc surface, and the outer periphery of the concave arc surface extends to the inner wall of the connecting pipe.

[0007] Furthermore, the speaker also includes a driver connected to the plug, the driver being used to drive the plug to rotate in order to adjust the plug.

[0008] Furthermore, the driver includes a motor and a first gear connected to the motor, and a second gear is provided at the outer end of the plug, with the first gear meshing with the second gear.

[0009] Furthermore, the phase inverter tube has multiple connecting pipes on its side wall, and the connecting pipes are evenly distributed along the circumference of the phase inverter tube.

[0010] Furthermore, the connection between the inner cavity of the connecting tube and the tube cavity is rounded.

[0011] This invention offers the following advantages: The inner cavity of the connecting pipe enlarges the radial portion of the cavity, reducing airflow speed and thus noise. Different frequency bands of sound produce varying airflow speeds. To accommodate different bass noise reduction effects, the size of the inner cavity can be adjusted by changing the plug, thereby providing a buffering effect that adapts to the airflow speeds of different frequency bands. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the speaker of this utility model.

[0013] Figure 2 This is a schematic diagram of the phase inverter.

[0014] Figure 3 for Figure 2 The cross-sectional view of the phase inverter tube shown. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0016] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0017] It should also be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] Please see Figures 1-3 As shown in the figure, a specific embodiment of this utility model provides a bass-reflex speaker 100. The speaker 100 includes a speaker 30, a cabinet 20, and a bass reflex tube 10 disposed on the cabinet 20. The speaker 30 faces the front of the cabinet 20. Specifically, the cabinet 20 is provided with a bass reflex port 21, which is located on the front of the cabinet 20 and is connected to the bass reflex tube 10, which is located inside the cabinet 20.

[0019] The phase inverter 10 has a cavity 11, the speaker 30 emits sound forward and causes the air inside the housing 20 to vibrate, and the airflow passes through the cavity 11.

[0020] The phase inverter tube 10 has a connecting tube 12 on its side wall. The inner cavity 121 of the connecting tube 12 communicates with the tube cavity 11. The connection 14 between the inner cavity 121 and the tube cavity 11 is rounded to facilitate airflow into and out of the inner cavity 121 and reduce obstruction. The connecting tube 12 is connected to an adjustable plug 13, and the size of the inner cavity 121 can be changed by adjusting the plug 13.

[0021] The inner cavity 121 of the connecting pipe 12 can enlarge the radial portion of the cavity 11, which reduces the airflow speed during airflow through the cavity 11, thereby reducing noise.

[0022] The airflow speed produced by different frequency bands of sound is different. In order to adapt to the bass noise reduction effect of different frequency bands, the size of the inner cavity 121 can be changed by adjusting the plug 13.

[0023] When the inner cavity is large (121), the buffering effect is good and it is suitable for buffering high-frequency sounds. When the inner cavity is small (121), the buffering effect is poor and it is suitable for buffering low-frequency sounds. This allows the airflow speed generated by sounds of different frequencies to be buffered in a way that is appropriate for the buffering effect.

[0024] In this specific embodiment, the plug 13 includes a threaded portion 131 and a sealing portion 132 located at the inner end. The threaded portion 131 is threadedly connected to the connecting pipe 12 to adjust the plug 13, and the sealing portion 132 always remains in contact with the inner wall of the connecting pipe 12.

[0025] By having the sealing barrier contact the inner wall of the connecting pipe 12, airflow can be prevented from entering the gap between the plug 13 and the inner wall of the connecting pipe 12, thus avoiding airflow disturbance. By rotating the plug 13, the inner end face 133 of the plug 13 can be moved closer to or further away from the cavity 11. When the inner end face 133 of the plug 13 is closer to the cavity 11, the inner cavity 121 becomes smaller, and the airflow buffering capacity weakens. When the inner end face 133 of the plug 13 is further away from the cavity 11, the inner cavity 121 becomes larger, and the airflow buffering capacity strengthens.

[0026] The inner end face 133 of the plug 13 is a concave arc surface 133. The outer periphery of the concave arc surface 133 extends to the inner wall of the connecting pipe 12. When gas flows into the inner end face 133, it will pass through the concave arc surface 133. The concave arc surface 133 will guide the airflow to turn smoothly, reduce the generation of eddies and turbulence, and further reduce noise.

[0027] The speaker 100 also includes a driver (not shown), which is connected to the plug 13. The driver is used to drive the plug 13 to rotate to adjust the plug 13, thereby automatically adjusting the position of the plug 13 and thus automatically adjusting the size of the inner cavity 121. Specifically, the driver includes a motor and a first gear connected to the motor. The outer end of the plug 13 is provided with a second gear 134, and the first gear meshes with the second gear 134.

[0028] The phase inverter tube 10 has a plurality of connecting tubes 12 on its side wall. The connecting tubes 12 are evenly distributed along the circumference of the phase inverter tube 10 to provide adaptive buffering.

[0029] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0030] Some features of this invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of this invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A bass-reflex speaker, characterized in that, The speaker includes a cabinet and a bass reflex tube disposed on the cabinet. The bass reflex tube has a cavity, and a connecting pipe is provided on the side wall of the bass reflex tube. The inner cavity of the connecting pipe communicates with the cavity. The connecting pipe is connected to an adjustable plug, and the size of the inner cavity can be changed by adjusting the plug.

2. The bass-reflex speaker according to claim 1, characterized in that, The plug includes a threaded portion and a sealing portion located at the inner end. The threaded portion is threadedly connected to the connecting pipe to adjust the plug, and the sealing portion always remains in contact with the inner wall of the connecting pipe.

3. The bass-reflex speaker according to claim 2, characterized in that, The inner end face of the plug is a concave arc surface, and the outer periphery of the concave arc surface extends to the inner wall of the connecting pipe.

4. The bass-reflex speaker according to claim 2, characterized in that, The speaker also includes a driver connected to the plug, the driver being used to drive the plug to rotate in order to adjust the plug.

5. The bass-reflex speaker according to claim 4, characterized in that, The driver includes a motor and a first gear connected to the motor, and a second gear is provided at the outer end of the plug, with the first gear meshing with the second gear.

6. The bass-reflex speaker according to claim 1, characterized in that, The phase inverter tube has multiple connecting pipes on its side wall, and the connecting pipes are evenly distributed along the circumference of the phase inverter tube.

7. The bass-reflex speaker according to claim 1, characterized in that, The connection between the inner cavity of the connecting tube and the tube cavity is rounded.

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