Phase guide tube of small-size bidirectional loudspeaker sound outlet

Abstract

The utility model provides a small-size bidirectional loudspeaker sound outlet phase guide tube, which comprises a phase guide tube main body, one end of the phase guide tube main body is provided with a sound outlet, the other end of the phase guide tube main body is provided with a sound guide port, and the phase guide tube main body comprises a first side plate, a second side plate and two third side plates. The ends, close to the sound guide opening, of the two third side plates deviate outwards and are symmetrical about the central axis passing through the sound guide opening, the two sides of the third side plates are perpendicularly and fixedly connected with the first side plate and the second side plate to form an inner cavity, and the width of the side, close to the sound guide opening, of the inner cavity is larger than the width of the side, close to the sound outlet, of the inner cavity. According to the utility model, the bass in the sound box can be led out from the bass horn, and the output effect of the bass of the sound box is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of acoustic structures, in particular to a phase-conducting tube of a sound outlet of a small-volume bidirectional loudspeaker. Background Art

[0002] In existing speakers, a sound guide tube is usually provided in the speaker body. The function of the sound guide tube is to mix the sound waves emitted from the rear side of the speaker with the sound waves emitted from the front side of the speaker, thereby enhancing the sound effect of the speaker. In the application of the sound guide tube, the traditional sound guide tube is in the shape of a trumpet with a large mouth facing the outside of the speaker or in the shape of a straight cylinder. Its structure is easy to cause acoustic distortion when the speaker of the speaker vibrates, and the sound field presented by the traditional sound guide tube is only a straight front sound field; in order to solve this technical problem, such as the Chinese patent application number is 202021335322.9, the announcement date is 2020.12.08, which discloses a sound guide tube, comprising a cylindrical sound tube and a funnel-shaped conical sound guide body embedded in one end of the sound tube; the conical sound guide body is provided with a cone top sound outlet hole, a cone inner cavity, and a cone bottom sound inlet funnel mouth which pass through in sequence from the cone top to the cone bottom; the cone bottom sound inlet funnel mouth is aligned and sleeved with one end of the sound tube, and the cone top sound outlet hole is located in the sound tube; the sound wave is introduced from the cone bottom sound inlet funnel mouth, and then passes through the cone inner cavity, the cone top sound outlet hole, and the sound tube in sequence, and finally is exported from the other end of the sound tube as a plane sound field.

[0003] The sound guide tubes in this document are installed on both sides of the speaker body, so that the sound waves in the speaker body are introduced from the sound inlet funnel at the bottom of the cone, and then pass through the conical inner cavity, the sound outlet hole at the top of the cone, and the sound transmission tube in sequence, and finally are exported from the speaker body from the other end of the sound transmission tube as a plane sound field. However, this structure cannot guide the sound waves in the speaker to between the subwoofers that emit sound, thereby increasing the bass effect of the speaker. Summary of the invention

[0004] The utility model provides a phase guide tube for a small-volume two-way speaker sound outlet, which can guide the bass in the speaker box out from between the bass speakers, thereby enhancing the output effect of the bass of the speaker box.

[0005] To achieve the above-mentioned purpose, the utility model provides a phase-guide tube for a sound outlet of a small-volume two-way speaker, including a phase-guide tube body, one end of the phase-guide tube body is provided with a sound outlet, and the other end of the phase-guide tube body is provided with a sound guide port, the phase-guide tube body includes a first side panel, a second side panel and two third side panels, the two third side panels are arranged to deviate outward at one end close to the sound guide port and are symmetrical about the central axis of the sound guide port, the two sides of the third side panel are respectively vertically fixedly connected to the first side panel and the second side panel to form an inner cavity, the width of the inner cavity close to the sound guide port is greater than the width close to the sound outlet, and the sound guide port is connected to the sound outlet through the inner cavity.

[0006] The above arrangement, by respectively arranging a sound outlet and a sound guiding tube on both sides of the phase guiding tube body, and at the same time arranging the sound guiding port to be connected with the sound outlet through the inner cavity inside the phase guiding tube body, can enable the bass in the sound box to flow back to the sound guiding port, and then enter the sound guiding port and flow to the sound outlet through the inner cavity inside the phase guiding tube. By arranging the third side panel in the phase guiding tube body to be symmetrical about the central axis of the sound guiding port and making one end of the third side panel deviate to the outside away from the central axis of the sound guiding port, the inflow area of ​​the sound guiding port can be increased. At the same time, since the phase guiding tube is arranged between the woofers, the deviation of the third side panel to the outside can better enable the bass flowing back from the woofers on both sides of the sound guiding tube to the sound box to be drained to the sound guiding port, and then the bass in the sound box is guided out from between the woofers through the phase guiding tube and in the same direction as the bass propagation of the woofers, thereby enhancing the output effect of the bass of the speaker.

[0007] Furthermore, the height of the third side panel near the sound guide port is lower than that near the sound outlet port, and the side of the third side panel connected to the second side panel is inclined from one end of the sound guide port to one end of the sound outlet port.

[0008] The above arrangement enables the bass in the speaker to flow back to the sound guide port when the speaker is placed horizontally, thereby making it easier to guide the bass out of the speaker along the inclination from the sound guide port to the sound outlet.

[0009] Furthermore, the width of the sound guide port is greater than the width of the sound outlet port.

[0010] The above arrangement makes the sound guide port's inlet area larger, making it easier for the bass in the speaker to flow to the sound guide port.

[0011] Furthermore, the height of the sound guide port is lower than the height of the sound outlet.

[0012] The above arrangement facilitates forming an inclined trend from the sound guide port to the sound outlet.

[0013] Furthermore, the third side panel is provided with rounded corners on both sides of the sound guide port and the sound outlet.

[0014] The above setting makes it easier for the bass in the speaker to enter the sound guide port along the rounded corners on both sides of the sound guide port, avoiding the obstruction of right angles that affects the output of the bass; at the same time, it makes it easier for the bass to be output from both sides of the sound outlet along the rounded corners, thereby enhancing the overall bass output effect of the speaker.

[0015] Furthermore, a chamfered corner is provided on the first side panel and on the upper side of the sound guide port.

[0016] The above arrangement makes it easier for the bass in the speaker to enter the sound guide port along the rounded corner on the upper side of the sound guide port, thereby avoiding the obstruction of the right angle that affects the bass output.

[0017] Furthermore, outer sides of the first side panel and the third side panel may be fixedly connected to the interior of the sound box via connecting pieces.

[0018] The above arrangement facilitates the fixed installation of the sound guide tube in the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the utility model being applied to a horizontally placed speaker.

[0020] Figure 2 for Figure 1 Sectional view at AA.

[0021] Figure 3 This is a schematic diagram of the utility model being applied to a vertically placed speaker.

[0022] Figure 4 for Figure 3 Cross-sectional view at BB in the middle. DETAILED DESCRIPTION

[0023] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1-4 As shown, a phase guide tube for a sound outlet of a small-volume two-way speaker comprises a phase guide tube body, one end of the phase guide tube body is provided with a sound guide port 1, and the other end of the phase guide tube body is provided with a sound outlet 2. In this embodiment, the width of the sound guide port 1 is greater than the width of the sound outlet 2, so that the introduction area of ​​the sound guide port 1 is larger, and it is easier to guide the bass in the sound box 11 to the sound guide port 1, and the height of the sound guide port 1 is lower than the height of the sound outlet 2, so that it is easy to form an inclined trend from the sound guide port 1 to the sound outlet 2; the phase guide tube body comprises a first side panel 21, a second side panel 22 and two third side panels 23, and the third side panels 23 and the sides of the sound guide port 1 and the sound outlet 2 are provided with chamfered corners 24, which is convenient for the bass in the sound box 11 to be more The rounded corners 24 on both sides of the sound guide port 1 are easy to enter the sound guide port 1, avoiding the obstruction of right angles that affects the output of the bass, and at the same time, it is convenient for the bass to be output from both sides of the sound outlet 2 along the rounded corners 24, thereby enhancing the overall bass output effect of the speaker 11; in addition, the rounded corners 24 are also arranged on the first side panel 21 and are located on the upper side of the sound guide port 1, so that the bass in the speaker 11 is easier to enter the sound guide port 1 along the rounded corners 24 on the upper side of the sound guide port 1, avoiding the obstruction of right angles that affects the output of the top bass in the speaker 11; the height of the third side panel 23 close to one end of the sound guide port 1 is lower than the height close to one end of the sound outlet 2, and the side where the third side panel 23 is connected to the second side panel 22 is inclined from one end of the sound guide port 1 to one end of the sound outlet 2. In this embodiment, Figure 4As shown, one end of the two third side panels 23 close to the sound guide port 1 deviates outward in an "eight" shape and is symmetrical about the central axis of the sound guide port 1, so that when the sound box 11 is placed horizontally, the bass speakers on both sides of the sound guide tube can flow back to the sound box 11 and drain to the sound guide port 1, and then the bass in the sound box 11 is more easily guided out along the inclination trend from the sound guide port 1 to the sound outlet 2; the two sides of the two third side panels 23 are respectively vertically fixedly connected to the first side panel 21 and the second side panel 22 to form an inner cavity 25, the width of the inner cavity 25 close to the sound guide port 1 is greater than the width of the side close to the sound outlet 2, and the sound guide port 1 is connected to the sound outlet 2 through the inner cavity 25; in this embodiment, the outer side of the first side panel 21 can be fixedly connected to the top of the sound box 11 through the connecting member 4, and the outer sides of the two third side panels 23 can be fixedly connected to the two sides of the inside of the sound box 11 through the connecting member 4, so that the sound guide tube can be fixedly installed in the sound box 11 and the sound outlet 2 is located between the bass speakers.

[0025] The working principle of the utility model is as follows: by setting the height of one end of the third side panel 23 to be greater than the height of the other end, and at the same time making the end of the third side panel 23 with a lower height deviate outward to form an "eight" shape and be symmetrical about the central axis of the sound guide port 1, so that the two sides of the third side panel 23 are respectively fixedly connected to the first side panel 21 and the second side panel 22 to form an inner cavity 25 with an inclined trend from the sound guide port 1 to the sound outlet 2 and the width of the sound guide port 1 is greater than the sound outlet 2, so that it is easier for the bass speakers located on both sides of the sound guide pipe to flow back to the bass in the sound box 11 to be drained to the sound guide port 1, then flow through the inner cavity 25, and finally be discharged from the sound outlet 2, so that the bass in the sound box 11 is discharged from between the bass speakers, thereby enhancing the overall bass output effect of the sound box 11.

Claims

1. A phase guide tube for a small-volume two-way speaker outlet, characterized in that: The phase-guide tube body comprises a sound outlet at one end of the phase-guide tube body, a sound guide port at the other end of the phase-guide tube body, the phase-guide tube body comprises a first side panel, a second side panel and two third side panels, the two third side panels are arranged to deviate outward at one end close to the sound guide port and are symmetrical about the central axis of the sound guide port, the two sides of the third side panel are respectively vertically fixedly connected to the first side panel and the second side panel to form an inner cavity, the width of the inner cavity close to the sound guide port is greater than the width of the inner cavity close to the sound outlet, and the sound outlet is connected with the sound guide port through the inner cavity.

2. The phase guide tube for a small-volume two-way speaker outlet according to claim 1, characterized in that: The height of the third side panel near the sound guide port is lower than that near the sound outlet port, and the side of the third side panel connected to the second side panel is inclined from the sound guide port to the sound outlet port.

3. The phase guide tube for a small-volume two-way speaker outlet according to claim 2, characterized in that: The width of the sound guide port is greater than the width of the sound outlet port.

4. The phase guide tube for a small-volume two-way speaker outlet according to claim 3, characterized in that: The height of the sound guide port is lower than that of the sound outlet port.

5. The phase guide tube for a small-volume two-way speaker outlet according to claim 2, characterized in that: The third side panel is provided with rounded corners on both sides of the sound guide port and the sound outlet.

6. The phase guide tube for a small-volume two-way speaker outlet according to claim 1, characterized in that: A rounded corner is provided on the first side panel and located on the upper side of the sound guide port.

7. The phase guide tube for a small-volume two-way speaker outlet according to claim 6, characterized in that: The outer sides of the first side panel and the third side panel can be fixedly connected to the interior of the sound box through a connecting piece.

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