Inverter tube with different cross sections

Abstract

The utility model provides a special-section inverter tube, and belongs to the technical field of inverter tubes. The special-section inverter tube comprises an inverter tube body, a special-section mechanism is arranged at the starting end of the inverter tube body, an anti-loosening mechanism is arranged at the tail end of the inverter tube body, the special-section mechanism comprises a first port, a positioning block and a first positioning hole, the first port is fixedly connected to the starting end of the inverter tube body, and the positioning block is fixedly connected to the first port. The second port is provided with a first port, the two sides of the first port are symmetrically provided with positioning blocks, and the top of each positioning block is provided with a first positioning hole. The shape of the second port is gradually transited into the square from the original regular ellipse which is equal to that of the first port, so that the smoothness of sound waves passing through the inverter tube body is ensured, and the use space of the sound equipment backboard is saved by utilizing the characteristic that the square occupies a smaller area than the regular ellipse.

Description

Technical Field

[0001] The utility model relates to the technical field of inverted tubes, in particular to an inverted tube with a different cross-section. Background Art

[0002] A resonant bass resonator is a device used to enhance the sound quality of a speaker. Its primary function is to amplify sound waves, particularly bass, by utilizing vibrations behind the speaker. Installing a resonant bass resonator creates stronger sound waves, as its diameter is typically smaller than that of the speaker. This effectively utilizes both forward and rearward sound waves, improving the speaker's sound quality.

[0003] Patent No. CN220368795U proposes a bass reflex duct that includes a duct housing, a grid-like frame, and sound-absorbing cotton. The grid-like frame surrounds the opening of the duct housing, and the sound-absorbing cotton is disposed within the grid-like frame. This utility model can reduce air duct noise.

[0004] When using existing devices, circular or oval connection ports are usually used at both ends of the bass reflex tube. However, many components need to be installed inside the speaker. In order to save the space occupied by the bass reflex tube and improve the efficiency of the bass reflex tube connection ports, a bass reflex tube with a connection port that saves more space without affecting sound wave transmission and damaging sound quality is needed.

[0005] Therefore, the present application provides a different-cross-section inverter tube to meet the demand. Utility Model Content

[0006] The technical problem to be solved by the utility model is to provide a different-section inverter tube to solve the problem that the connection port of the existing inverter tube occupies a large area and has a low space utilization rate.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0008] A variable-section inverter tube comprises an inverter tube body, a variable-section mechanism is provided at the starting end of the inverter tube body, and an anti-loosening mechanism is provided at the end of the inverter tube body;

[0009] The different-section mechanism includes a first port, a positioning block and a first positioning hole. The first port is fixedly connected to the starting end of the inverter tube body. Positioning blocks are symmetrically arranged on both sides of the first port. The top of the positioning block is provided with a first positioning hole.

[0010] As a preferred solution, the different-section mechanism also includes a first transition pipe, a second transition pipe, a second port and a positioning plate. The first transition pipe is connected to the first port, the other side of the first transition pipe is connected to the second transition pipe, the end of the second transition pipe is fixedly connected to the second port, and the connection between the first transition pipe and the second transition pipe is fixedly connected to the positioning plate.

[0011] As a preferred solution, the first port and the first transition pipe are perpendicular to each other, and the connection between the first port and the first transition pipe is transitionally connected through an arc-shaped elbow, and the cross-section of the inner wall of the first port pipe is a regular ellipse.

[0012] As a preferred solution, the cross section of the second port is square, and the cross-sectional area of ​​the second port is equal to that of the inner wall of the first port pipe, and the cross-sectional area of ​​any one of the second port, the second transition pipe and the first transition pipe is equal.

[0013] As a preferred solution, the anti-loosening mechanism includes a first shock-absorbing pad, a second positioning hole, a circular spring, a second shock-absorbing pad, a third positioning hole, a cover plate, an expansion screw and a limit slot. The first shock-absorbing pad is fixedly installed on one side of the second port, and a second positioning hole is provided at the right angles of the first shock-absorbing pad. A circular spring is provided inside the second positioning hole, one side of the circular spring is fixedly connected to one side of the second port, and the other side of the circular spring is fixedly connected to one side of the second shock-absorbing pad, and a third positioning hole is provided at the right angles of the second shock-absorbing pad. A cover plate is fixedly installed on one side of the second shock-absorbing pad, and the cover plate is fixedly connected to the first shock-absorbing pad and the second port by an expansion screw, and a limit slot is provided on one side of the cover plate.

[0014] As a preferred solution, the anti-loosening mechanism also includes a slide groove, a slide plate, a fourth positioning hole, an arc block, a semicircular block, a slider, a slide rod, a square spring and a limiting tube. The slide groove is opened inside the limiting groove, and a slider is movably installed inside the limiting groove. One side of the slider is fixedly connected to the slide rod, one side of the slider is fixedly connected to the square spring, and the other side of the square spring is fixedly connected to the limiting tube. The limiting tube is fixedly installed inside the slide groove, the top of the slider is fixedly connected to the slide plate, the head end of the slide plate is fixedly connected to the arc block, and a fourth positioning hole is opened on one side of the arc block, and the tail end of the slide plate is fixedly connected to the semicircular block.

[0015] As a preferred solution, the slide plate is movably installed inside the limiting groove, and the slide plates are movably connected at the head and tail ends, and the semicircular block on the first slide plate is movably connected to the arc block on the second slide plate.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects:

[0017] 1. A variable-cross-section bass reflex tube, which, by providing a second port, gradually transitions the shape of the second port from a regular ellipse (the same shape as the first port) to a square, while ensuring that sound quality is not compromised. This ensures the smooth passage of sound waves through the bass reflex tube body and utilizes the smaller footprint of a square shape compared to a regular ellipse, thus saving space on the back panel of the sound system.

[0018] 2. A variable-section bass reflex tube, which is provided with slides, and the slides are connected to each other at the end to form a square cover to prevent the expansion screws from loosening. When installing the bass reflex tube body, only one slide needs to be manually moved to drive the four slides to move simultaneously, and the hole on one side of the arc block is aligned with the second positioning hole. After tightening the expansion screw, the slide is loosened. Under the action of the square spring, the slider drives the slide to reset and cover the expansion screw. This not only hides the expansion screw and beautifies the surface of the device, but also prevents the expansion screw from loosening due to the vibration of the audio itself after long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable one skilled in the relevant art to make and use the present disclosure.

[0020] Figure 1 This is a schematic diagram of the main structure of a phase-inverting tube with a different cross-section;

[0021] Figure 2 This is a side perspective diagram of a different-section inverted tube;

[0022] Figure 3 This is the left front view of a different-section bass reflex tube;

[0023] Figure 4 This is the right side elevation view of a variable cross-section bass reflex tube;

[0024] Figure 5 This is a schematic diagram of the main structure of the anti-loosening mechanism;

[0025] Figure 6 This is a schematic diagram of the exploded structure of the anti-loosening mechanism;

[0026] Figure 7 This is an enlarged structural diagram of the anti-loosening mechanism.

[0027] [reference numerals]

[0028] 1. Inverter tube body; 2. Different cross-section mechanism; 201. First port; 202. Positioning block; 203. First positioning hole; 204. First transition tube; 205. Second transition tube; 206. Second port; 207. Positioning plate; 3. Anti-loosening mechanism; 301. First shock-absorbing pad; 302. Second positioning hole; 303. Circular spring; 304. Second shock-absorbing pad; 305. Third positioning hole; 306. Cover plate; 307. Expansion screw; 308. Limiting groove; 309. Slide groove; 310. Slide plate; 311. Fourth positioning hole; 312. Arc block; 313. Semicircular block; 314. Slider; 315. Slide rod; 316. Square spring; 317. Limiting tube.

[0029] As shown in the figure, in order to clearly implement the structure of the embodiment of the present invention, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the appended claims. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] Example

[0032] like Figure 1 and Figure 2 As shown, the embodiment of the present invention provides a variable cross-section inverter, comprising an inverter body 1, a variable cross-section mechanism 2 is provided at the starting end of the inverter body 1, and an anti-loosening mechanism 3 is provided at the end of the inverter body 1;

[0033] like Figure 3 and Figure 4 As shown, the different-section mechanism 2 includes a first port 201, a positioning block 202 and a first positioning hole 203. The first port 201 is fixedly connected to the starting end of the inverter tube body 1. The positioning blocks 202 are symmetrically arranged on both sides of the first port 201, and the first positioning hole 203 is opened on the top of the positioning block 202.

[0034] The different-section mechanism 2 also includes a first transition tube 204, a second transition tube 205, a second port 206 and a positioning plate 207. The first transition tube 204 is connected to the first port 201, and the other side of the first transition tube 204 is connected to the second transition tube 205. The end of the second transition tube 205 is fixedly connected to the second port 206, and the connection between the first transition tube 204 and the second transition tube 205 is fixedly connected to the positioning plate 207.

[0035] The first port 201 and the first transition pipe 204 are perpendicular to each other, and the connection between the first port 201 and the first transition pipe 204 is transitionally connected through an arc-shaped elbow. The cross section of the inner wall of the pipe of the first port 201 is a regular ellipse.

[0036] The cross section of the second port 206 is square, and the cross-sectional area of ​​the second port 206 is equal to that of the inner wall of the first port 201 . The cross-sectional area of ​​any one of the second port 206 , the second transition pipe 205 and the first transition pipe 204 is equal.

[0037] It needs to be further explained that: when the sound wave enters the first transition tube 204 through the first port 201, the sound wave will be concentrated and guided to the inside of the first transition tube 204 by the curved inner wall at the bend between the first port 201 and the first transition tube 204, and then when passing through the second transition tube 205, it will be further guided by the curved inner wall inside the second transition tube 205, and finally output through the second port 206. In this process, the space occupied by the sound wave inside any section of the first port 201, the first transition tube 204 and the second transition tube 205 remains unchanged, but The cross-section inside the pipe gradually transitions from a regular ellipse to a square in the order of the first port 201, the first transition pipe 204, the second transition pipe 205, and the second port 206. The sound waves can always remain unobstructed during the process of converting the reflective medium, thereby avoiding the influence of eddy currents generated by the gaps between the pipes on the sound waves. Furthermore, under the premise of ensuring sound quality, the shape of the second port 206 is converted from the original regular ellipse to a square, which saves the area occupied by the second port 206 on the audio installation board and improves the efficiency of space utilization.

[0038] like Figure 5 、 Figure 6 and Figure 7As shown, the anti-loosening mechanism 3 includes a first shock-absorbing pad 301, a second positioning hole 302, a circular spring 303, a second shock-absorbing pad 304, a third positioning hole 305, a cover plate 306, an expansion screw 307 and a limiting groove 308. The first shock-absorbing pad 301 is fixedly installed on one side of the second port 206. A second positioning hole 302 is opened at a right angle of the first shock-absorbing pad 301. A circular spring 303 is arranged inside the second positioning hole 302. One side of the circular spring 303 is fixedly connected to one side of the second port 206. The other side of the circular spring 303 is fixedly connected to one side of the second shock-absorbing pad 304. A third positioning hole 305 is opened at a right angle of the second shock-absorbing pad 304. A cover plate 306 is fixedly installed on one side of the second shock-absorbing pad 304. The cover plate 306 is fixedly connected to the first shock-absorbing pad 301 and the second port 206 by an expansion screw 307. A limiting groove 308 is opened on one side of the cover plate 306.

[0039] The anti-loosening mechanism 3 also includes a slide groove 309, a slide plate 310, a fourth positioning hole 311, an arc block 312, a semicircular block 313, a slider 314, a slide rod 315, a square spring 316 and a limiting tube 317. The slide groove 309 is opened inside the limiting groove 308, and a slider 314 is movably installed inside the limiting groove 308. One side of the slider 314 is fixedly connected to the slide rod 315, one side of the slider 314 is fixedly connected to the square spring 316, and the other side of the square spring 316 is fixedly connected to the limiting tube 317. The limiting tube 317 is fixedly installed inside the slide groove 309, the top of the slider 314 is fixedly connected to the slide plate 310, the head end of the slide plate 310 is fixedly connected to the arc block 312, and a fourth positioning hole 311 is opened on one side of the arc block 312, and the tail end of the slider 310 is fixedly connected to the semicircular block 313.

[0040] The slide plate 310 is movably installed inside the limiting groove 308 , and the slide plates 310 are movably connected at the head and tail. The semicircular block 313 on the first slide plate 310 is movably connected to the arc block 312 on the second slide plate 310 .

[0041] It is necessary to further explain that when the bass reflex tube body 1 needs to be fixedly installed on the speaker, first place the bass reflex tube body 1 into the interior of the speaker, then align the second port 206 with the square bass reflex hole reserved on the speaker, then align the second positioning hole 302 on the first shock-absorbing pad 301 with the third positioning hole 305 on the second shock-absorbing pad 304 with the mounting hole reserved on the second port 206, and then manually move the topmost slide 310. When the arc block 312 on the top horizontal slide 310 moves the right longitudinal slide After the semicircular block 313 on 310 is squeezed down, the fourth positioning hole 311 moves to just above the mounting hole reserved on the cover 306. At this time, the expansion screw 307 can be aligned with the second positioning hole 302, the third positioning hole 305 and the cover 306 and tightened. When the expansion screws 307 are all tightened, the slide plate 310 is loosened. Under the action of the square spring 316, the slider 314 is pushed to one side of the slide groove 309, thereby driving the slide plate 310 to reset, and finally blocking the expansion screw 307 and preventing the expansion screw 307 from loosening and falling off.

[0042] The working principle and use process of the utility model: During the use of the utility model, first place the inverted tube body 1 into the interior of the speaker, then align the second port 206 with the square inverted hole reserved on the speaker, then align the second positioning hole 302 on the first shock-absorbing pad 301 with the third positioning hole 305 on the second shock-absorbing pad 304 with the mounting hole reserved on the second port 206, and manually move the topmost slide 310. When the arc block 312 on the top horizontal slide 310 moves the right longitudinal slide 31 After the semicircular block 313 on 0 is squeezed out, the fourth positioning hole 311 is moved to just above the mounting hole reserved on the cover plate 306. At this time, the expansion screw 307 can be aligned with the second positioning hole 302, the third positioning hole 305 and the cover plate 306 and tightened. When the expansion screws 307 are all tightened, the slide plate 310 is loosened. Under the action of the square spring 316, the slider 314 is pushed to one side of the slide groove 309, thereby driving the slide plate 310 to reset, and finally blocking the expansion screw 307 and preventing the expansion screw 307 from loosening and falling off.

[0043] Next, the first port 201 is fixedly installed by aligning the screws with the first positioning holes 203 . At this time, the first port 201 and the second port 206 are both fixedly installed.

[0044] Finally, when the sound wave enters the first transition tube 204 through the first port 201, the sound wave is concentrated and guided into the interior of the first transition tube 204 by the curved inner wall at the bend between the first port 201 and the first transition tube 204. Then, when passing through the second transition tube 205, the sound wave is further guided by the curved inner wall inside the second transition tube 205, and is finally output through the second port 206. During this process, the space occupied by the sound wave inside any section of the first port 201, the first transition tube 204, and the second transition tube 205 remains unchanged. However, the cross-section of the interior of the pipe gradually transitions from a regular ellipse to a square in the order of the first port 201, the first transition tube 204, the second transition tube 205, and the second port 206. During the process of converting the reflective medium, the sound wave can always remain unobstructed, thereby avoiding the impact of eddy currents generated by the gaps between the pipes on the sound wave. Furthermore, while ensuring sound quality, the shape of the second port 206 is converted from the original regular ellipse to a square, saving the area occupied by the second port 206 on the audio installation board and improving space utilization efficiency.

[0045] Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A variable cross-section inverter tube, characterized in that: It comprises an inverted tube body (1), wherein the starting end of the inverted tube body (1) is provided with a different cross-section mechanism (2), and the end of the inverted tube body (1) is provided with an anti-loosening mechanism (3); A different cross-section mechanism (2), the different cross-section mechanism (2) comprising a first port (201), a positioning block (202) and a first positioning hole (203), the first port (201) being fixedly connected to the starting end of the inverted tube body (1), positioning blocks (202) being symmetrically provided on both sides of the first port (201), and the first positioning hole (203) being provided on the top of the positioning block (202); The cross section of the inner wall of the pipe of the first port (201) is a regular ellipse; the different-section mechanism (2) further comprises a second port (206), the cross section of the second port (206) is a square, and the cross-sectional area of ​​the inner wall of the pipe of the second port (206) is equal to that of the first port (201).

2. The variable cross-section inverter tube according to claim 1, characterized in that: The different-section mechanism (2) further includes a first transition tube (204), a second transition tube (205), a second port (206) and a positioning plate (207), wherein the first transition tube (204) is connected to the first port (201), the other side of the first transition tube (204) is connected to the second transition tube (205), the end of the second transition tube (205) is fixedly connected to the second port (206), and the connection between the first transition tube (204) and the second transition tube (205) is fixedly connected to the positioning plate (207).

3. The variable cross-section inverter tube according to claim 1, characterized in that: The first port (201) and the first transition pipe (204) are perpendicular to each other, and the connection between the first port (201) and the first transition pipe (204) is transitionally connected via an arc-shaped elbow, and the cross-section of the inner wall of the pipe of the first port (201) is a regular ellipse.

4. The variable cross-section inverter tube according to claim 2, characterized in that: The cross-sectional areas of any one of the second port (206), the second transition pipe (205) and the first transition pipe (204) are equal.

5. The variable cross-section inverter tube according to claim 1, characterized in that: The anti-loosening mechanism (3) comprises a first shock-absorbing pad (301), a second positioning hole (302), a circular spring (303), a second shock-absorbing pad (304), a third positioning hole (305), a cover plate (306), an expansion screw (307) and a limiting groove (308). The first shock-absorbing pad (301) is fixedly mounted on one side of the second port (206). The first shock-absorbing pad (301) is provided with a second positioning hole (302) at a right angle. A circular spring (303) is provided inside the second positioning hole (302). The circular spring (303) is provided in the center of the second positioning hole (302). One side of the (303) is fixedly connected to one side of the second port (206), and the other side of the circular spring (303) is fixedly connected to one side of the second shock-absorbing pad (304). A third positioning hole (305) is provided at a right angle of the second shock-absorbing pad (304). A cover plate (306) is fixedly installed on one side of the second shock-absorbing pad (304). The cover plate (306) is fixedly connected to the first shock-absorbing pad (301) and the second port (206) through an expansion screw (307). A limiting groove (308) is provided on one side of the cover plate (306).

6. The variable cross-section inverter tube according to claim 1, characterized in that: The anti-loosening mechanism (3) further comprises a slide groove (309), a slide plate (310), a fourth positioning hole (311), an arc block (312), a semicircular block (313), a slider (314), a slide rod (315), a square spring (316) and a limiting tube (317), wherein the slide groove (309) is provided inside the limiting groove (308), a slider (314) is movably installed inside the limiting groove (308), a slide rod (315) is fixedly connected to one side of the slider (314), and the slider (314) is provided with a plurality of movable members. ) is fixedly connected to one side of a square spring (316), the other side of the square spring (316) is fixedly connected to a limiting tube (317), the limiting tube (317) is fixedly installed inside the slide groove (309), the top of the slider (314) is fixedly connected to a slide plate (310), the head end of the slide plate (310) is fixedly connected to an arc block (312), and a fourth positioning hole (311) is opened on one side of the arc block (312), and the tail end of the slide plate (310) is fixedly connected to a semicircular block (313).

7. The variable cross-section inverter tube according to claim 6, characterized in that: The slide plate (310) is movably mounted inside the limiting groove (308), and the slide plates (310) are movably connected at the head and tail, and the semicircular block (313) on the first slide plate (310) is movably connected to the arc block (312) on the second slide plate (310).

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