Sound equipment air pipe and sound equipment

Abstract

The utility model discloses a sound equipment air pipe and sound equipment, and relates to the technical field of sound equipment. According to the main technical scheme, the sound box comprises a pipe body and a fixing plate, the pipe body is used for being arranged in a sound box body, and an air channel is formed in the pipe body; the air channel penetrates through the two ends of the pipe body, the cross sectional area of the air channel is gradually increased in the direction from one end of the pipe body to the other end of the pipe body, and the end, with the smaller cross sectional area, of the air channel is used for being communicated with a phase inversion hole in a sound box body; the fixing plate is sleeved at one end of the tube body, and the fixing plate is used for being fixed on the inner wall of a sound box body. When the loudspeaker works, air flow in the sound box body enters the air duct through one end of the air duct with a relatively large cross section area. The purposes of effectively reducing the resistance when the air in the sound box body enters the sound box air pipe, reducing the airflow blocking risk, further improving the horn and tapping efficiency, reducing the power loss, reducing the wind noise and improving the sound box performance are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound, in particular to a sound air duct and a sound machine. Background Art

[0002] The use of acoustic ducts in audio systems can improve the sound quality of the equipment. Ducts are also called bass reflex ducts. Ducts boost bass, making it cleaner. The structure and working principle of acoustic ducts is that the anti-phase sound waves radiated from the cone into the speaker cabinet pass through the speaker cabinet and then radiate outward through the duct. These lower-frequency sound waves can then approach the phase of the same-frequency sound waves radiated from the front of the cone, improving the radiation efficiency of the speaker and extending the low-frequency response.

[0003] like Figure 1 As shown, the existing sound duct is connected to the interior of the sound box, and an air duct is opened inside the sound duct, which runs through both ends of the sound duct and is connected to the bass reflex port on the sound box. In order to reduce the risk of foreign matter from the outside of the sound box entering the sound duct through the bass reflex port and then entering the interior of the sound box along the sound duct, the end of the sound duct away from the sound box gradually bends upward, and the size of the upper air outlet of the air duct is smaller than the size of the lower air outlet of the air duct. However, when the speaker is working, the airflow inside the sound box is easily blocked at the upper air outlet when entering the sound duct through the upper air outlet, affecting the efficiency of the speaker and the amplifier, resulting in power loss and causing significant wind noise. Utility Model Content

[0004] The purpose of the utility model is to provide an audio air duct and a speaker, which solves the problem that the existing audio air duct is prone to air flow blockage at the upper wind port when the speaker is working, affecting the efficiency of the speaker and the amplifier, causing power loss and causing obvious wind noise.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] An acoustic air duct comprises a tube body and a fixing plate, wherein the tube body is used to be arranged inside an acoustic box, and an air duct is opened inside the tube body; the air duct runs through both ends of the tube body, and the cross-sectional area of the air duct gradually increases from one end of the tube body to the other end of the tube body, and the end with the smaller cross-sectional area of the air duct is used to communicate with the inverted hole on the acoustic box; the fixing plate is sleeved on one end of the tube body, and the fixing plate is used to be fixed to the inner wall of the acoustic box.

[0007] A further technical solution is: an annular insert is provided on the end face of one end of the tube body; the annular insert is sleeved outside the air duct; and the annular insert is used to be inserted into an annular slot on the sound box.

[0008] A further technical solution is that an obtuse angle is formed between the annular insert and the tube body.

[0009] A further technical solution is that a sealing strip is provided at one end of the annular insert away from the tube body.

[0010] A further technical solution is: a first fixing hole is provided on the plate surface of the fixing plate; the first fixing hole is located outside the annular insert; there are a plurality of first fixing holes, and the plurality of first fixing holes are arranged around the annular insert.

[0011] In a second aspect, a speaker is provided, comprising the sound air duct as described in the first aspect, and also comprising a speaker box and a connecting piece, wherein the sound air duct is arranged in the speaker box, a second fixing hole is provided on the inner side of the front wall of the speaker box, and the connecting piece is connected to the second fixing hole and the first fixing hole on the sound air duct; wherein, the front wall of the speaker box is provided with an inverted hole, and the inverted hole is connected to the air duct of the sound air duct.

[0012] A further technical solution is: an annular slot is opened on the inner side of the front wall of the sound box; the annular slot is sleeved outside the bass reflex hole; and the annular slot is plugged into the annular plug of the sound duct.

[0013] A further technical solution is that the sound air duct gradually tilts upward in a direction away from the front wall of the sound box.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] When the speaker is operating, air from inside the cabinet enters the air duct through the end with the relatively larger cross-sectional area, flows through the duct into the bass reflex port, and finally flows out of the bass reflex port. This effectively reduces resistance when air from inside the cabinet enters the speaker air duct, lowering the risk of airflow blockage, thereby improving speaker and amplifier efficiency, reducing power loss, and reducing wind noise, ultimately enhancing audio performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the partial cross-section structure of the existing audio system;

[0017] Figure 2 This is a schematic diagram of a partial cross-section structure of an acoustic air duct in this embodiment;

[0018] Figure 3 This is a schematic diagram of a partially cutaway structure of a speaker in this embodiment;

[0019] Figure 4 for Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Markings and corresponding parts names in the accompanying drawings:

[0021] 100 - sound duct; 101 - tube body; 102 - air duct; 103 - fixing plate; 104 - annular insert; 105 - sealing strip; 106 - first fixing hole;

[0022] 201 - audio box; 202 - bass reflex port; 203 - second fixing hole; 204 - annular slot. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Example 1

[0025] This embodiment provides an acoustic air duct 100, such as Figure 2 As shown, it includes a tube body 101 and a fixing plate 103. The tube body 101 is used to be arranged inside the speaker box 201, and an air duct 102 is opened inside the tube body 101; the air duct 102 runs through both ends of the tube body 101, and the cross-sectional area of the air duct 102 gradually increases from one end of the tube body 101 to the other end of the tube body 101, and the end of the air duct 102 with a smaller cross-sectional area is used to communicate with the bass reflex hole 202 on the speaker box 201; the fixing plate 103 is sleeved on one end of the tube body 101, and the fixing plate 103 is used to be fixed on the inner wall of the speaker box 201.

[0026] Exemplarily, during implementation, an air duct 102 is opened inside the tube body 101, and the air duct 102 extends from one end of the tube body 101 to the other end of the tube body 101, and passes through both ends of the tube body 101. The cross-sectional area of the air duct 102 gradually increases from one end of the tube body 101 to the other end of the tube body 101.

[0027] The fixing plate 103 is connected to one end of the tube body 101 by welding, screwing or integral molding.

[0028] When in use, first place the tube body 101 inside the speaker box 201, then fix the fixing plate 103 on the front wall of the speaker box 201 by welding, screwing, etc., and make the end of the air duct 102 with a relatively small cross-sectional area communicate with the bass reflex hole 202 on the front wall of the speaker box 201.

[0029] When the speaker is operating, airflow inside the speaker box 201 enters the air duct 102 through the end of the air duct 102 with a relatively large cross-sectional area, flows through the air duct 102 into the bass reflex port 202, and finally flows out of the bass reflex port 202. This effectively reduces the risk of airflow blockage, thereby effectively improving the speaker and amplifier efficiency, reducing power loss, and reducing wind noise.

[0030] Moreover, the tube body 101 is integrally formed. Compared with the prior art in which two sets of molds are opened during production and then the two molds are screwed together to form the sound duct 100, the tube body 101 in this embodiment has higher air tightness, which can effectively reduce the risk of airflow leakage from the side wall of the tube body 101.

[0031] Example 2

[0032] like Figure 2 As shown, based on the above embodiment 1, in this embodiment, the end face of one end of the tube body 101 is provided with an annular insert 104; the annular insert 104 is sleeved outside the air duct 102; the annular insert 104 is used to be inserted into the annular slot 204 on the speaker box 201.

[0033] Exemplarily, during implementation, the end face of one end of the tube body 101 is provided with an annular insert 104 by welding, screwing or integral molding. The annular insert 104 is sleeved on the outside of the air duct 102 and is used to be inserted into the annular slot 204 on the speaker box 201.

[0034] During use, first place the tube body 101 inside the speaker box 201 and ensure that the relatively smaller end of the air duct 102 is aligned with the inverted hole 202 on the speaker box 201. Next, insert the annular insert 104 into the corresponding annular slot 204 on the speaker box 201 to achieve preliminary positioning of the tube body 101. Finally, fix the fixing plate 103 to the front wall of the speaker box 201 by welding, screwing, etc. The close fit between the annular insert 104 and the annular slot 204 effectively improves the airtightness between the tube body 101 and the speaker box 201, and effectively reduces the risk of airflow leakage from the gap between the tube body 101 and the speaker box 201. At the same time, the risk of water, mud, etc. outside the speaker box 201 flowing into the interior of the speaker box 201 through the gap between the tube body 101 and the speaker box 201 is effectively reduced. On the other hand, the annular insert 104 is used in conjunction with the annular slot 204 on the speaker box 201 to more firmly fix the position of the tube body 101, reducing the risk of movement or vibration of the tube body 101 during use, thereby achieving the purpose of improving the stability of the sound.

[0035] Example 3

[0036] like Figure 2 As shown, based on the above embodiment 2, in this embodiment, the annular insert 104 and the tube body 101 form an obtuse angle.

[0037] For example, during implementation, the annular insert 104 forms an obtuse angle with the tube body 101. This allows the tube body 101 to be connected to the front wall of the speaker cabinet 201, gradually sloping upward away from the front wall. This positions the end of the air duct 102 with a larger cross-sectional area above the end with a smaller cross-sectional area. This effectively reduces the risk of water, sediment, and other debris from outside the speaker cabinet 201 flowing into the interior of the speaker cabinet 201 through the end with a larger cross-sectional area of the air duct 102.

[0038] Example 4

[0039] like Figure 2 As shown, based on the above embodiment 3, in this embodiment, a sealing strip 105 is provided at one end of the annular insert 104 away from the tube body 101 .

[0040] For example, during implementation, a sealing strip 105 is attached to the end of the annular insert 104 away from the tube body 101 by welding, bonding, or snapping. The sealing strip 105 can be made of rubber, foamed silicone, or other elastic material. When the annular insert is inserted into the annular slot 204 of the speaker cabinet 201, the sealing strip 105 fills the gap between the annular insert 104 and the annular slot 204 of the speaker cabinet 201, further improving the airtightness between the tube body 101 and the speaker cabinet 201, thereby further effectively reducing the risk of air leakage through the gap between the tube body 101 and the speaker cabinet 201. This also effectively reduces the risk of water, sediment, and the like from outside the speaker cabinet 201 flowing into the interior of the speaker cabinet 201 through the gap between the tube body 101 and the speaker cabinet 201.

[0041] Example 5

[0042] like Figure 2 As shown, based on the above-mentioned embodiment 4, in this embodiment, the plate surface of the fixing plate 103 is provided with a first fixing hole 106; the first fixing hole 106 is located on the outside of the annular insert 104; the number of the first fixing holes 106 is provided, and the plurality of first fixing holes 106 are arranged around the annular insert 104.

[0043] For example, during implementation, a first fixing hole 106 is opened on the plate surface of the fixing plate 103 . There are a plurality of first fixing holes 106 , which are arranged around the outer side of the annular insert.

[0044] During use, first place the tube body 101 inside the speaker cabinet 201 and ensure that the end of the air duct 102 with the relatively small cross-section is aligned with the bass reflex hole 202 on the speaker cabinet 201. Next, insert the annular insert 104 into the corresponding annular slot 204 on the speaker cabinet 201 and align the first fixing hole 106 on the fixing plate 103 with the second fixing hole 203 on the speaker cabinet 201 to achieve preliminary positioning of the tube body 101. Finally, insert a connecting piece such as a screw or bolt through the first fixing hole 106 on the fixing plate 103 and the second fixing hole 203 on the speaker cabinet 201 to secure the fixing plate 103 to the front wall of the speaker cabinet 201. This improves the connection strength between the tube body 101 and the speaker cabinet 201, thereby further enhancing the stability of the sound.

[0045] Example 6

[0046] This embodiment provides a sound system, such as Figure 3 Combine Figure 4 As shown, it includes the sound air duct 100 as described in Example 5, and also includes a sound box 201 and a connecting piece. The sound air duct 100 is arranged in the sound box 201, and a second fixing hole 203 is opened on the inner side of the front wall of the sound box 201. The connecting piece is connected to the second fixing hole 203 and the first fixing hole 106 on the sound air duct 100; wherein, the front wall of the sound box 201 is opened with an inverted hole 202, and the inverted hole 202 is connected to the air duct 102 of the sound air duct 100.

[0047] For example, during implementation, a second fixing hole 203 is defined on the inner side of the front wall of the speaker cabinet 201, and the sound duct 100 is disposed within the speaker cabinet 201. Connectors, such as bolts and screws (not shown), are connected between the second fixing hole 203 on the speaker cabinet 201 and the first fixing hole 106 on the fixing plate 103 of the sound duct 100. Furthermore, an inverted port 202 is defined on the front wall of the speaker cabinet 201, communicating with the air duct 102 of the sound duct 100 to guide airflow.

[0048] When the speaker is working, as the speaker vibrates, the air inside the speaker cabinet 201 is forced to enter the air duct 102 through the end of the air duct 102 with a larger cross-sectional area. Since the air inside the speaker cabinet 201 enters the air duct 102 from the end of the air duct 102 with a larger cross-sectional area, the air inside the speaker cabinet 201 can enter the sound air duct 100 more smoothly. This effectively reduces the resistance when the air inside the speaker cabinet 201 enters the sound air duct 100, reduces the risk of airflow blockage, and thereby improves the speaker and amplifier efficiency, reduces power loss, and reduces wind noise, thereby improving the sound performance. After entering the sound air duct 100, the air flows through the air duct 102 into the bass reflex port 202. The air is guided by the air duct 102, which helps to improve the smoothness of the air flow, reduce turbulence, and thereby reduce unnecessary noise. The air eventually flows out of the bass reflex port 202. The guide hole is used to exchange the air inside the speaker cabinet 201 with the external environment, thereby achieving the purpose of enhancing the bass effect.

[0049] Example 7

[0050] like Figure 4 As shown, based on the above-mentioned embodiment 6, in this embodiment, an annular slot 204 is opened on the inner side of the front wall of the audio box 201; the annular slot 204 is arranged outside the bass reflex hole 202; the annular slot 204 is inserted into the annular insert 104 of the audio air duct 100.

[0051] For example, during implementation, an annular slot 204 is provided on the inner side of the front wall of the speaker cabinet 201. This slot 204 is positioned over the outer side of the bass reflex port 202 and is connected to the annular insert 104 of the speaker duct 100. The sealing strip 105 is compressed between the slot 204 and the insert 104. This improves the airtightness between the duct 101 and the speaker cabinet 201, reduces the risk of air leakage through the gap between the duct 101 and the cabinet, and thus enhances acoustic performance.

[0052] Example 8

[0053] like Figure 3 As shown, based on the above-mentioned embodiment 7, in this embodiment, the sound air duct 100 gradually tilts upward in the direction away from the front wall of the sound box 201.

[0054] For example, during implementation, the sound duct 100 gradually tilts upward away from the front wall of the sound box 201. This effectively reduces the risk of water, sediment, and other debris from outside the sound box 201 flowing into the speaker through the bass reflex port 202, thereby effectively reducing the risk of damage to internal components and extending the service life of the speaker.

[0055] Although the present invention has been described herein with reference to a number of illustrative embodiments thereof, it will be understood that numerous other modifications and implementations may be devised by those skilled in the art that fall within the scope and spirit of the principles disclosed herein. More specifically, within the scope of the present disclosure, the drawings, and the claims, numerous variations and modifications may be made to the components and / or arrangement of the subject combination arrangement. In addition to variations and modifications to the components and / or arrangement, other uses will also be apparent to those skilled in the art.

Claims

1. An acoustic air duct, characterized in that: include: A tube body (101), the tube body (101) is used to be arranged inside a sound box, and an air duct (102) is opened inside the tube body (101); the air duct (102) runs through both ends of the tube body (101), the cross-sectional area of the air duct (102) gradually increases from one end of the tube body (101) to the other end of the tube body (101), and the end of the air duct (102) with a smaller cross-sectional area is used to communicate with the inverted hole on the sound box; A fixing plate (103) is sleeved on one end of the tube body (101), and the fixing plate (103) is used to be fixed on the inner wall of the sound box.

2. The acoustic air duct according to claim 1, characterized in that: An annular insert (104) is provided on the end surface of one end of the tube body (101); The annular insert (104) is sleeved outside the air duct (102); The annular insert (104) is used for inserting into an annular slot on the sound box.

3. The acoustic air duct according to claim 2, characterized in that: An obtuse angle is formed between the annular insert (104) and the tube body (101).

4. The acoustic air duct according to claim 3, characterized in that: A sealing strip (105) is provided at one end of the annular insert (104) away from the tube body (101).

5. The acoustic air duct according to claim 4, characterized in that: The plate surface of the fixing plate (103) is provided with a first fixing hole (106); The first fixing hole (106) is located outside the annular insert (104); There are a plurality of the first fixing holes (106), and the plurality of first fixing holes (106) are arranged around the annular insert (104).

6. A sound system, characterized in that: The acoustic air duct (100) as claimed in claim 5 further comprises: A sound box (201) and a connecting piece, wherein the sound box (201) is provided with the sound duct (100), a second fixing hole (203) is provided on the inner side of the front wall of the sound box (201), and the connecting piece is connected to the second fixing hole (203) and the first fixing hole (106) on the sound duct (100); wherein the front wall of the sound box (201) is provided with an inverted hole (202), and the inverted hole (202) is communicated with the air duct (102) of the sound duct (100).

7. The sound system according to claim 6, characterized in that: An annular slot (204) is provided on the inner side of the front wall of the audio box (201); The annular slot (204) is sleeved outside the inverted hole (202); The annular slot (204) is plugged into the annular insert (104) of the sound duct (100).

8. The sound system according to claim 7, characterized in that: The sound air duct (100) gradually tilts upward in a direction away from the front wall of the sound box (201).

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