Two-channel inverter tube

Abstract

The utility model provides a dual-channel inverter tube, and belongs to the technical field of sound equipment assemblies. A double-channel inverter tube comprises an inverter tube main body, a double-cavity mechanism is arranged at the top of the inverter tube main body, and an adjusting mechanism is arranged at the bottom of the inverter tube main body. A user does not need to saw short the first resonance tube or the second resonance tube in order to adjust the length of the first resonance tube or the second resonance tube, and meanwhile, worm and gear transmission is utilized, so that the situation that the length of an inverter tube is affected due to deflection of a worm gear caused by long-time vibration of the sound equipment is avoided, and the service life of the inverter tube is prolonged. And the damping rings are additionally arranged in the first auxiliary resonant tube and the second auxiliary resonant tube, so that the air tightness of the joint of the first auxiliary resonant tube and the second resonant tube is ensured by using the stress deformation of the damping rings, and the noise of the resonant cavity is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of audio components, and particularly relates to a dual-channel phase inverter tube. Background Art

[0002] The phase inverter tube, also called a reflex tube, is a kind of playback device. In a common reflex-type speaker, the speaker diaphragm is exposed to emit sound, and there will also be vibrations at the back of the speaker. If the vibrations of the speaker towards the back are also utilized, the sound waves will be strengthened and the bass will be enhanced. After installing the phase inverter tube, since the diameter of the phase inverter tube is smaller than that of the speaker, relatively strong sound waves will rush out from the phase inverter tube. In this way, the sound waves in both the forward and backward directions of the speaker are utilized, improving the sound quality of the speaker.

[0003] Patent No.: CN112153520A proposes a thin speaker with dual phase inverter tubes, including a box body, characterized in that: the box body is flat and long, and a centrally symmetrically arranged speaker mounting groove is respectively provided on the long axis direction of the upper shell of the box body. A speaker unit is installed in the speaker mounting groove, and the sound radiation direction of the speaker unit faces the front of the box body; an out-sound hole of the phase inverter tube is respectively provided on each of the two short sides of the box body, and the two phase inverter tubes respectively extend along the edges of the inner wall of the box body and are conducted at a position close to the middle of the box body. The sound radiation directions of the two phase inverter tubes are the same as the sound radiation direction of the speaker unit. The structure of the present invention is ingenious, compact and reasonable, achieving less distortion under the structure of small volume and thin thickness, and effectively improving the frequency response curve of its 100 - 200 Hz low-frequency band by 4 - 5 dB (1m / 1W), improving the sound quality.

[0004] When the existing device is in use, the length of the phase inverter tube is fixed. However, when users configure the box body and speaker of the audio, the resonance frequencies of different box bodies and the free impedances of the speakers are different. In order to make the resonance frequencies of the box body and the speaker consistent, the simplest method is to adjust the length of the phase inverter tube. The conventional method is to measure the resonance frequencies of the box body and the speaker respectively, and then saw the guide tube shorter. However, this method is only applicable when the guide tube is too long. When the guide tube needs to be lengthened, other models of phase inverter tubes need to be replaced, causing inconvenience to users.

[0005] Therefore, the present application provides a dual-channel phase inverter tube to meet the requirements. Content of the Utility Model

[0006] The technical problem to be solved by the utility model is to provide a dual-channel phase inverter tube to solve the problem that the length of the existing phase inverter tube cannot be adjusted.

[0007] To solve the above technical problem, the utility model provides the following technical solutions:

[0008] A dual-channel phase inverter tube, comprising a phase inverter tube main body, a double-chamber mechanism is arranged at the top of the phase inverter tube main body, and an adjusting mechanism is arranged at the bottom of the phase inverter tube main body;

[0009] The double-chamber mechanism, the double-chamber mechanism includes a main resonance tube, a positioning hole, a first resonance tube and a second resonance tube, the main resonance tube is communicated with the phase inverter tube main body, a positioning hole is opened at the top of the main resonance tube, a first resonance tube is communicated with one side of the main resonance tube, and a second resonance tube is communicated with the other side of the main resonance tube.

[0010] As a preferred solution, the double-chamber mechanism further includes a limit ring, a retaining pin, a positioning ring and a chamfer. The limit rings are symmetrically arranged on one side of the first resonance tube and the second resonance tube. The retaining pins are symmetrically arranged on one side of the main resonance tube with the positioning hole as the center. A positioning ring is fixedly connected to the bottom of the retaining pin. Chamfers are opened inside the first resonance tube and the second resonance tube.

[0011] As a preferred solution, the cross-sectional area of the connection between the first resonance tube and the second resonance tube and the main resonance tube is equal to the cross-sectional area of the main resonance tube, and the cross-sectional area of the output ends of the first resonance tube and the second resonance tube is equal to the cross-sectional area of the main resonance tube.

[0012] As a preferred solution, the chamfer is an asymmetric rounded corner opened at the output ends of the first resonance tube and the second resonance tube. The inner diameters of the first resonance tube and the second resonance tube gradually increase from the connection with the main resonance tube, and the tube walls of the first resonance tube and the second resonance tube gradually become thinner.

[0013] As a preferred solution, the adjusting mechanism includes a positioning seat, a knob, a worm, a worm gear, a first bearing seat, a bidirectional lead screw and an external thread groove. The positioning seat is fixedly installed at the bottom of the phase inverter tube main body. A knob is movably installed on the top of the positioning seat. A worm is fixedly installed at the bottom of the knob. A worm gear is meshed and driven on one side of the worm. A bidirectional lead screw is fixedly sleeved on one side of the worm gear. The second bearing seat and the first bearing seat are symmetrically installed on one side of the bidirectional lead screw with the worm gear as the center. External thread grooves are opened at both the left and right ends of the bidirectional lead screw.

[0014] As a preferred solution, the adjusting mechanism further includes a first auxiliary resonance tube, a second auxiliary resonance tube and a damping ring. The first auxiliary resonance tube is threadedly sleeved on one side of the bidirectional lead screw. The second auxiliary resonance tube is threadedly sleeved on the other side of the bidirectional lead screw. Damping rings are arranged inside the first auxiliary resonance tube and the second auxiliary resonance tube.

[0015] As a preferred solution, the first auxiliary resonance tube and the second auxiliary resonance tube are respectively movably sleeved on one side of the first resonance tube and the worm gear. The first auxiliary resonance tube and the second auxiliary resonance tube are both movably connected to one side of the limiting ring. The damping ring is movably sleeved on the outer walls of the first resonance tube and the second resonance tube.

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

[0017] 1. A dual-channel phase inverter tube. By providing a bidirectional lead screw and driving the worm gear and the worm gear to mesh and transmit, the first auxiliary resonance tube and the second auxiliary resonance tube can be controlled to move to both sides simultaneously. Users do not need to saw short the first resonance tube or the second resonance tube in order to adjust the length of the first resonance tube or the second resonance tube. At the same time, the worm gear and worm drive are used to prevent the worm gear from deflecting due to the long-term vibration of the speaker, which affects the length of the phase inverter tube.

[0018] 2. A dual-channel phase inverter tube. By providing a damping ring and adding a damping ring inside the first auxiliary resonance tube and the second auxiliary resonance tube, the airtightness at the connection between the first auxiliary resonance tube and the first resonance tube is ensured by the force deformation of the damping ring, avoiding noise in the resonance cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings incorporated herein and constituting a part of the specification illustrate embodiments of the present disclosure and, together with the specification, are further used to explain the principles of the present disclosure and enable those skilled in the relevant art to implement and use the present disclosure.

[0020] Figure 1 It is a schematic diagram of the main structure of a dual-channel phase inverter tube;

[0021] Figure 2 It is a schematic diagram of the sectional structure of a dual-channel phase inverter tube;

[0022] Figure 3 It is a schematic diagram of the main structure of a dual-chamber mechanism of a dual-channel phase inverter tube;

[0023] Figure 4 It is a schematic diagram of the main structure of an adjustment mechanism of a dual-channel phase inverter tube;

[0024] Figure 5 It is a schematic diagram of a partial structure of an adjustment mechanism of a dual-channel phase inverter tube.

[0025] [Reference Signs]

[0026] 1. Inverting tube body; 2. Double-chamber mechanism; 201. Main resonance tube; 202. Positioning hole; 203. First resonance tube; 204. Second resonance tube; 205. Limiting ring; 206. Pin; 207. Positioning ring; 208. Chamfer; 3. Adjusting mechanism; 301. Positioning seat; 302. Knob; 303. Worm; 304. Worm gear; 305. First bearing seat; 306. Second bearing seat; 307. Bi-directional lead screw; 308. External thread groove; 309. First auxiliary resonance tube; 310. Second auxiliary resonance tube; 311. Damping ring.

[0027] As shown in the figure, in order to clearly implement the structure of the embodiments of the present invention, specific structures and devices are marked in the figure. However, this is only for schematic purposes and is not intended to limit the present invention to this specific structure, device, and environment. According to specific needs, those of ordinary skill in the art can adjust or modify these devices and environments, and the adjustments or modifications still fall within the scope of the appended claims. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment

[0030] As Figure 1 shown, an embodiment of the present invention provides a dual-channel inverting tube, including an inverting tube body 1. A double-chamber mechanism 2 is provided at the top of the inverting tube body 1, and an adjusting mechanism 3 is provided at the bottom of the inverting tube body 1;

[0031] As Figure 2 and Figure 3 shown, the double-chamber mechanism 2 includes a main resonance tube 201, a positioning hole 202, a first resonance tube 203, and a second resonance tube 204. The main resonance tube 201 is connected and communicated with the inverting tube body 1. A positioning hole 202 is opened at the top of the main resonance tube 201. A first resonance tube 203 is communicated with one side of the main resonance tube 201, and a second resonance tube 204 is communicated with the other side of the main resonance tube 201.

[0032] The double-chamber mechanism 2 further includes a limit ring 205, a pin 206, a positioning ring 207, and a chamfer 208. The limit ring 205 is symmetrically arranged on one side of the first resonant tube 203 and the second resonant tube 204. The pins 206 are symmetrically arranged on one side of the main resonant tube 201 with the positioning holes 202 as the center. A positioning ring 207 is fixedly connected to the bottom of the pin 206. Chamfers 208 are provided inside both the first resonant tube 203 and the second resonant tube 204.

[0033] The cross-sectional area at the connection of the first resonant tube 203 and the second resonant tube 204 to the main resonant tube 201 is equal to the cross-sectional area of the main resonant tube 201. The cross-sectional areas of the output ends of the first resonant tube 203 and the second resonant tube 204 are equal to the cross-sectional area of the main resonant tube 201.

[0034] The chamfer 208 is an asymmetric rounded corner provided at the output ends of the first resonant tube 203 and the second resonant tube 204. The inner diameters of the first resonant tube 203 and the second resonant tube 204 gradually increase starting from the connection with the main resonant tube 201, and the tube walls of the first resonant tube 203 and the second resonant tube 204 gradually become thinner.

[0035] It should be further explained that: since the inner diameter of the first resonant tube 203 is smaller than that of the first sub-resonant tube 309, in order to reduce the influence of sound at the connection between the first resonant tube 203 and the first sub-resonant tube 309, the chamfer 208 is provided to make the connection between the first resonant tube 203 and the first sub-resonant tube 309 tend to be consistent. At this time, the cross-section of the tube wall of the first resonant tube 203 is triangular, and the tube wall is thinner the farther away from the main resonant tube 201.

[0036] As Figure 4 and Figure 5 shown, the adjustment mechanism 3 includes a positioning seat 301, a knob 302, a worm 303, a worm gear 304, a first bearing seat 305, a bidirectional lead screw 307, and an external thread groove 308. The positioning seat 301 is fixedly installed at the bottom of the inverted-phase tube body 1. A knob 302 is movably installed on the top of the positioning seat 301. A worm 303 is fixedly installed at the bottom of the knob 302. A worm gear 304 is meshed and driven on one side of the worm 303. A bidirectional lead screw 307 is fixedly sleeved on one side of the worm gear 304. The second bearing seat 306 and the first bearing seat 305 are symmetrically installed on one side of the bidirectional lead screw 307 with the worm gear 304 as the center. External thread grooves 308 are provided at both the left and right ends of the bidirectional lead screw 307.

[0037] The adjustment mechanism 3 further includes a first sub-resonant tube 309, a second sub-resonant tube 310, and a damping ring 311. The first sub-resonant tube 309 is threadedly sleeved on one side of the bidirectional lead screw 307. The second sub-resonant tube 310 is threadedly sleeved on the other side of the bidirectional lead screw 307. Damping rings 311 are provided inside both the first sub-resonant tube 309 and the second sub-resonant tube 310.

[0038] The first secondary resonance tube 309 and the second secondary resonance tube 310 are respectively movably sleeved on one side of the first resonance tube 203 and the worm gear 304. Both the first secondary resonance tube 309 and the second secondary resonance tube 310 are movably connected to one side of the limiting ring 205. The damping ring 311 is movably sleeved on the outer walls of the first resonance tube 203 and the second resonance tube 204.

[0039] It should be further explained that: when it is necessary to adjust the overall length of the inverted phase tube body 1, manually rotate the knob 302 to drive the worm 303 to engage and drive with the worm gear 304. At this time, the bidirectional lead screw 307 rotates driven by the worm gear 304, further driving the first secondary resonance tube 309 and the second secondary resonance tube 310 on both sides of the bidirectional lead screw 307 to approach or move away from the position of the worm gear 304 along the bidirectional lead screw 307 at the same time, without sawing short the inverted phase tube body 1, avoiding waste of materials.

[0040] The working principle and usage process of the present utility model: During the use of the present utility model, first align the pin 206 with the reserved card slot on the speaker, and then fix the whole inverted phase tube body 1 on the speaker. Then complete the installation of the inverted phase tube body 1 by connecting with the positioning hole 202 through screws.

[0041] Next, test the resonance frequencies of the speaker and the speaker. After the test is completed, determine the length of the guide tube according to the data.

[0042] Finally, manually rotate the knob 302 to drive the worm 303 to engage and drive with the worm gear 304. At this time, the bidirectional lead screw 307 rotates driven by the worm gear 304, further driving the first secondary resonance tube 309 and the second secondary resonance tube 310 on both sides of the bidirectional lead screw 307 to approach or move away from the position of the worm gear 304 along the bidirectional lead screw 307 at the same time until the length of the inverted phase tube body 1 is appropriate.

[0043] Finally, it should be noted that: The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A dual-channel phase reversal tube, characterized in that: It comprises an inverted tube body (1), a double chamber mechanism (2) is arranged at the top of the inverted tube body (1), and an adjustment mechanism (3) is arranged at the bottom of the inverted tube body (1); A dual-chamber mechanism (2), the dual-chamber mechanism (2) comprising a main resonance tube (201), a positioning hole (202), a first resonance tube (203) and a second resonance tube (204), the main resonance tube (201) being connected to an inverted tube body (1), a positioning hole (202) being provided at the top of the main resonance tube (201), one side of the main resonance tube (201) being connected to the first resonance tube (203), and the other side of the main resonance tube (201) being connected to the second resonance tube (204).

2. A dual-channel phase reversal tube according to claim 1, characterized in that: The dual-chamber mechanism (2) further comprises a limit ring (205), a bayonet (206), a positioning ring (207) and a chamfer (208); the limit ring (205) is symmetrically arranged on one side of the first resonance tube (203) and the second resonance tube (204); the bayonet (206) is symmetrically arranged on one side of the main resonance tube (201) with the positioning hole (202) as the center; the bottom of the bayonet (206) is fixedly connected to the positioning ring (207); and the inside of the first resonance tube (203) and the second resonance tube (204) are both provided with a chamfer (208).

3. The dual-channel inverter tube according to claim 1, characterized in that: The cross-sectional area at the connection between the first resonance tube (203) and the second resonance tube (204) and the main resonance tube (201) is equal to the cross-sectional area of ​​the main resonance tube (201), and the cross-sectional area at the output end of the first resonance tube (203) and the second resonance tube (204) is equal to the cross-sectional area of ​​the main resonance tube (201).

4. The dual-channel inverter tube according to claim 2, characterized in that: The chamfer (208) is an asymmetric rounded corner opened at the output ends of the first resonance tube (203) and the second resonance tube (204); the inner diameters of the first resonance tube (203) and the second resonance tube (204) gradually expand from the connection with the main resonance tube (201), and the tube walls of the first resonance tube (203) and the second resonance tube (204) gradually become thinner.

5. The dual-channel inverter tube according to claim 1, characterized in that: The adjusting mechanism (3) comprises a positioning seat (301), a knob (302), a worm (303), a worm wheel (304), a first bearing seat (305), a bidirectional screw (307) and an external thread groove (308); the positioning seat (301) is fixedly mounted on the bottom of the inverted tube body (1); the top of the positioning seat (301) is movably mounted with a knob (302); the bottom of the knob (302) is fixedly mounted with a worm (303); one side of the worm (303) is meshed with a worm wheel (304); one side of the worm wheel (304) is fixedly sleeved with a bidirectional screw (307); the second bearing seat (306) and the first bearing seat (305) are symmetrically mounted on one side of the bidirectional screw (307) with the worm wheel (304) as the center; and the left and right ends of the bidirectional screw (307) are both provided with external thread grooves (308).

6. The dual-channel inverter tube according to claim 5, characterized in that: The regulating mechanism (3) further comprises a first secondary resonance tube (309), a second secondary resonance tube (310) and a damping ring (311); the first secondary resonance tube (309) is threadedly sleeved on one side of the bidirectional screw rod (307); the second secondary resonance tube (310) is threadedly sleeved on the other side of the bidirectional screw rod (307); and the first secondary resonance tube (309) and the second secondary resonance tube (310) are both provided with a damping ring (311) inside.

7. The dual-channel inverter tube according to claim 6, characterized in that: The first sub-resonance tube (309) and the second sub-resonance tube (310) are movably sleeved on one side of the first resonance tube (203) and the worm gear (304), respectively; the first sub-resonance tube (309) and the second sub-resonance tube (310) are both movably connected to one side of the limit ring (205); and the damping ring (311) is movably sleeved on the outer walls of the first resonance tube (203) and the second resonance tube (204).

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