Dual-suspension dual-voice-coil woofer unit

Abstract

The utility model discloses a kind of double-spring wave double voice coil bass units, it is related to bass unit technical field, including shell, fixed with magnetic circuit system in shell, vertical sleeve is equipped with voice coil tube on magnetic circuit system, voice coil tube is through magnetic circuit system and extends outward, two voice coil widths are fixed with around on voice coil tube, voice coil width is arranged in the upper and lower ends of magnetic circuit system, the upper and lower ends of voice coil tube are respectively fixed with first spring wave and second spring wave, the top of shell is fixed with yoke, voice coil tube top fixed sleeve is equipped with drum paper, the top of drum paper is fixed with elastic suspension edge around, the outside of elastic suspension edge is fixed with the top of yoke, the double-spring wave double voice coil bass unit of the utility model can offset the non-linear distortion of single voice coil limit displacement, realize efficient, low distortion conversion of electroacoustic energy.

Description

Technical Field

[0001] This utility model relates to the field of bass unit technology, and in particular to a dual-spike dual-voice-coil bass unit. Background Technology

[0002] As the core acoustic component of an audio system, the woofer is responsible for the efficient electroacoustic energy conversion of low-frequency sound waves. Its performance directly affects the fullness and dynamic performance of the sound quality. Traditional woofers mostly use a single voice coil and single spider structure. Due to the limitations of the voice coil stroke and the spider support method, the linear stroke is small. When the woofer operates at high power, it is prone to harmonic distortion due to uneven magnetic field, which makes it difficult to meet the needs of today's high dynamic range scenarios. Therefore, there is an urgent need for a woofer that can solve the problem of nonlinear distortion when operating at high power. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a dual-spike dual-voice-coil bass unit, which can solve the problem of nonlinear distortion that occurs when a single voice coil is under extreme displacement.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A dual-spike dual-voice-coil bass unit includes a housing, a magnetic circuit system fixed inside the housing, a voice coil tube vertically sleeved on the magnetic circuit system, the voice coil tube passing through the magnetic circuit system and extending outward, two voice coil wings fixedly surrounding the voice coil tube, the voice coil wings being disposed at the upper and lower ends of the magnetic circuit system, a first spider and a second spider respectively fixedly sleeved at the upper and lower ends of the voice coil tube, a frame fixedly mounted on the top of the housing, the outer side of the first spider being fixedly mounted to the bottom of the frame, the second spider being fixedly mounted inside the housing, a diaphragm fixedly sleeved on the top of the voice coil tube, an elastic suspension edge fixedly mounted around the top of the diaphragm, the outer side of the elastic suspension edge being fixedly mounted to the top of the frame.

[0006] Preferably, the basin frame includes a lower ring frame, several support frames, and an upper ring frame. The lower ring frame is fixed around the top outer side of the housing. The outer side of the first elastic wave is fixed to the inner side of the lower ring frame. The support frame is an outward arc-shaped structure, with one end fixed to the outer side of the lower ring frame and the other end fixed to the bottom of the upper ring frame. The inner side of the upper ring frame is fixed to the outer side of the elastic suspension edge.

[0007] Preferably, the elastic suspension edge includes an arched elastic ring, an outer connecting edge, and an inner connecting edge. One end of the outer connecting edge is fixed to the outer side of the arched elastic ring, and the other end is fixed to the inner side of the upper ring frame. One end of the inner connecting edge is fixed to the inner side of the arched elastic ring, and the other end is fixed to the top edge of the drum paper.

[0008] Preferably, the housing includes an upper annular shell, a magnetic circuit shell, and a lower annular shell with a top opening. The upper and lower annular shells are integrally formed at the upper and lower ends of the magnetic circuit shell, respectively. The magnetic circuit system is fixed inside the magnetic circuit shell. The bottom of the upper annular shell is bolted to the top of the magnetic circuit system, and the top of the lower annular shell is bolted to the bottom of the magnetic circuit system. The voice coil tube passes through the upper annular shell and the magnetic circuit shell and extends into the lower annular shell. A gap is left between the upper and lower annular shells and the voice coil tube. The frame is fixed to the top of the upper annular shell, and the second spring is fixed inside the lower annular shell.

[0009] Preferably, a plurality of support rods are evenly arranged between the basin frame and the lower annular shell, with one end of the support rod fixed to the bottom of the basin frame and the other end fixed to the outside of the lower annular shell.

[0010] Preferably, several layers of dustproof netting are fixed inside both the upper annular shell and the lower annular shell.

[0011] Preferably, the magnetic circuit system includes a magnet, two pole plates and a pole post. The two pole plates are respectively fixed on the upper and lower sides of the magnet. The magnet and the pole plates are both fixed on the inner wall of the housing. The pole post is fixed on the inner wall of the voice coil tube. The two voice coil windings are respectively disposed in the gap between the pole post and the two pole plates.

[0012] Preferably, the bottom of the drum paper is integrally formed with a dust cap, which is positioned directly above the voice coil tube.

[0013] The beneficial effects of this utility model are:

[0014] This utility model discloses a dual-spike dual-voice-coil bass unit. A magnetic circuit system is fixed inside the housing, and a voice coil tube is vertically mounted on the magnetic circuit system, extending outwards through the system. Two voice coil wings are fixedly mounted around the voice coil tube at the upper and lower ends of the magnetic circuit system. A first and second spider are fixedly mounted at the upper and lower ends of the voice coil tube, respectively. A diaphragm is fixedly mounted on the top of the voice coil tube, and an elastic suspension edge is fixedly mounted around the top of the diaphragm. This allows the dual-spike dual-voice-coil bass unit to counteract the nonlinear distortion of the single voice coil's limit displacement, achieving efficient and low-distortion electroacoustic energy conversion. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a cross-sectional view of the present invention;

[0017] Figure 3 This is a schematic diagram of the internal structure of the magnetic circuit shell in this utility model;

[0018] Figure 4 This is a schematic diagram of the basin frame in this utility model;

[0019] Figure 5 This is a schematic diagram of the elastic suspension edge in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the midrange coil tube of this utility model.

[0021] In the diagram: 10. Shell; 11. Upper annular shell; 12. Magnetic circuit shell; 13. Lower annular shell; 20. Magnetic circuit system; 21. Magnet; 22. Electrode; 23. Pole post; 30. Voice coil tube; 40. Voice coil winding; 50. First spring; 60. Second spring; 70. Bass frame; 71. Lower ring frame; 72. Support frame; 73. Upper ring frame; 80. Drum; 90. Elastic suspension edge; 91. Arched elastic ring; 92. Outer connecting edge; 93. Inner connecting edge; 100. Support rod; 110. Dust cap. Detailed Implementation

[0022] To make the technical problems solved, the technical solutions and the beneficial effects of the utility model clearer, the utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] The embodiments provided by this utility model are as follows: Figures 1-6 As shown, a dual-spike dual-voice-coil bass unit includes a housing 10, a magnetic circuit system 20 fixed inside the housing 10, a voice coil tube 30 vertically sleeved on the magnetic circuit system 20, the voice coil tube 30 passing through the magnetic circuit system 20 and extending outward, two voice coil wings 40 fixedly around the voice coil tube 30, the voice coil wings 40 being disposed at the upper and lower ends of the magnetic circuit system 20, a first spider 50 and a second spider 60 respectively fixedly sleeved at the upper and lower ends of the voice coil tube 30, a frame 70 fixedly fixed at the top of the housing 10, the outer side of the first spider 50 being fixed to the bottom of the frame 70, the second spider 60 being fixed inside the housing 10, a diaphragm 80 fixedly sleeved at the top of the voice coil tube 30, an elastic suspension edge 90 fixedly around the top of the diaphragm 80, the outer side of the elastic suspension edge 90 being fixed to the top of the frame 70.

[0024] In operation, when the audio current is input to the symmetrically arranged voice coil wings 40 through two independent lines, the energized coil inside the voice coil tube 30 is subjected to Ampere force in the strong magnetic field generated by the closed magnetic circuit formed by the magnetic circuit system 20, causing the voice coil tube 30 to vibrate axially up and down. The first spider 50 and the second spider 60, as elastic support structures, constrain the voice coil to move only axially through their reversible deformation, suppressing the lateral displacement of the voice coil tube 30. The voice coil tube 30 drives the drum 80 to generate periodic mechanical vibration, pushing the surrounding air to form compression and sparse waves, ultimately converting electrical energy into sound energy that can be perceived by the human ear. In this process, the design of the dual voice coil wings 40 cancels the nonlinear distortion of the single voice coil's limit displacement, and the closed-loop constraint of the first spider 50 and the second spider 60 ensures the axial vibration of the voice coil tube 30, together achieving efficient and low-distortion conversion of electroacoustic energy.

[0025] Preferably, the basin frame 70 includes a lower ring frame 71, a plurality of support frames 72 and an upper ring frame 73. The lower ring frame 71 is fixed around the top outer side of the housing 10. The outer side of the first elastic wave 50 is fixed to the inner side of the lower ring frame 71. The support frame 72 has an outward arc-shaped structure, with one end fixed to the outer side of the lower ring frame 71 and the other end fixed to the bottom of the upper ring frame 73. The inner side of the upper ring frame 73 is fixed to the outer side of the elastic suspension edge 90.

[0026] Preferably, the elastic suspension edge 90 includes an arched elastic ring 91, an outer connecting edge 92 and an inner connecting edge 93. One end of the outer connecting edge 92 is fixed to the outer side of the arched elastic ring 91, and the other end is fixed to the inner side of the upper ring frame 73. One end of the inner connecting edge 93 is fixed to the inner side of the arched elastic ring 91, and the other end is fixed to the top edge of the drum paper 80.

[0027] Preferably, the housing 10 includes an upper annular shell 11 with a top opening, a magnetic circuit shell 12, and a lower annular shell 13. The upper annular shell 11 and the lower annular shell 13 are integrally formed at the upper and lower ends of the magnetic circuit shell 12, respectively. The magnetic circuit system 20 is fixed inside the magnetic circuit shell 12. The bottom of the upper annular shell 11 is bolted to the top of the magnetic circuit system 20, and the top of the lower annular shell 13 is bolted to the bottom of the magnetic circuit system 20. The voice coil tube 30 passes through the upper annular shell 11 and the magnetic circuit shell 12 and extends into the lower annular shell 13. There is a gap between the upper annular shell 11 and the lower annular shell 13 and the voice coil tube 30. The frame 70 is fixed to the top of the upper annular shell 11, and the second spring 60 is fixed inside the lower annular shell 13.

[0028] Preferably, a plurality of support rods 100 are evenly arranged between the basin frame 70 and the lower annular shell 13, with one end of the support rod 100 fixed to the bottom of the basin frame 70 and the other end fixed to the outside of the lower annular shell 13.

[0029] Preferably, several layers of dustproof mesh are fixed inside both the upper annular shell 11 and the lower annular shell 13. The dustproof mesh can prevent external dust from entering the magnetic circuit shell 12 through the gap at the connection of the shell 10, thereby avoiding dust interference with the vibration of the voice coil tube 30 and improving the sound output effect of the bass unit.

[0030] Preferably, the magnetic circuit system 20 includes a magnet 21, two pole plates 22 and pole post 23. The two pole plates 22 are respectively fixed on the upper and lower sides of the magnet 21. The magnet 21 and the pole plates 22 are both fixed on the inner wall of the housing 10. The pole post 23 is fixed on the inner wall of the voice coil tube 30. The two voice coil coils 40 are respectively disposed in the gap between the pole post 23 and the two pole plates 22.

[0031] Preferably, the bottom of the drum paper 80 is integrally formed with a dust cap 110. The dust cap 110 is positioned directly above the voice coil tube 30. The dust cap 110 can prevent external dust from falling into the voice coil tube 30, thus avoiding interference from dust on the vibration of the voice coil tube 30 and improving the sound output effect of the bass unit.

[0032] This utility model discloses a dual-spike dual-voice-coil bass unit. A magnetic circuit system 20 is fixed inside a housing 10. A voice coil tube 30 is vertically mounted on the magnetic circuit system 20, extending outwards through the magnetic circuit system 20. Two voice coil coils 40 are fixedly mounted around the voice coil tube 30, positioned at the upper and lower ends of the magnetic circuit system 20. A first spider 50 and a second spider 60 are fixedly mounted at the upper and lower ends of the voice coil tube 30, respectively. A diaphragm 80 is fixedly mounted on the top of the voice coil tube 30, and an elastic suspension edge 90 is fixedly mounted around the top of the diaphragm 80. This allows the dual-spike dual-voice-coil bass unit to counteract the nonlinear distortion of the single voice coil's limit displacement, achieving efficient and low-distortion electroacoustic energy conversion.

[0033] 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 shall fall within the protection scope of the present utility model.

Claims

1. A dual-spike dual-voice-coil bass unit, comprising a housing (10), characterized in that: A magnetic circuit system (20) is fixed inside the housing (10). A voice coil tube (30) is vertically sleeved on the magnetic circuit system (20). The voice coil tube (30) passes through the magnetic circuit system (20) and extends outward. Two voice coil webs (40) are fixed around the voice coil tube (30). The voice coil webs (40) are located at the upper and lower ends of the magnetic circuit system (20). A first spring (50) and a second spring (60) are fixedly sleeved at the upper and lower ends of the voice coil tube (30), respectively. A frame (70) is fixed at the top of the housing (10). The outer side of the first spring (50) is fixed to the bottom of the frame (70). The second spring (60) is fixed inside the housing (10). A drum paper (80) is fixedly sleeved at the top of the voice coil tube (30). An elastic suspension edge (90) is fixedly sleeved around the top of the drum paper (80). The outer side of the elastic suspension edge (90) is fixed to the top of the frame (70).

2. The dual-spike dual-voice-coil bass unit according to claim 1, characterized in that: The basin stand (70) includes a lower ring frame (71), several support frames (72) and an upper ring frame (73). The lower ring frame (71) is fixed around the top outer side of the housing (10). The outer side of the first elastic wave (50) is fixed to the inner side of the lower ring frame (71). The support frame (72) is an outward arc-shaped structure. One end of it is fixed to the outer side of the lower ring frame (71), and the other end is fixed to the bottom of the upper ring frame (73). The inner side of the upper ring frame (73) is fixed to the outer side of the elastic suspension edge (90).

3. The dual-spike dual-voice-coil bass unit according to claim 2, characterized in that: The elastic suspension edge (90) includes an arched elastic ring (91), an outer connecting edge (92), and an inner connecting edge (93). One end of the outer connecting edge (92) is fixed to the outer side of the arched elastic ring (91), and the other end is fixed to the inner side of the upper ring frame (73). One end of the inner connecting edge (93) is fixed to the inner side of the arched elastic ring (91), and the other end is fixed to the top edge of the drum paper (80).

4. The dual-spike dual-voice-coil bass unit according to claim 1, characterized in that: The housing (10) includes an upper annular shell (11) with a top opening, a magnetic circuit shell (12) and a lower annular shell (13). The upper annular shell (11) and the lower annular shell (13) are integrally formed at the upper and lower ends of the magnetic circuit shell (12). The magnetic circuit system (20) is fixed inside the magnetic circuit shell (12). The bottom of the upper annular shell (11) is bolted to the top of the magnetic circuit system (20). The top of the lower annular shell (13) is bolted to the bottom of the magnetic circuit system (20). The voice coil tube (30) passes through the upper annular shell (11) and the magnetic circuit shell (12) and extends into the lower annular shell (13). There is a gap between the upper annular shell (11) and the lower annular shell (13) and the voice coil tube (30). The frame (70) is fixed to the top of the upper annular shell (11). The second spring (60) is fixed inside the lower annular shell (13).

5. A dual-spike dual-voice-coil bass unit according to claim 4, characterized in that: A plurality of support rods (100) are evenly arranged between the basin frame (70) and the lower annular shell (13). One end of the support rod (100) is fixed to the bottom of the basin frame (70), and the other end is fixed to the outside of the lower annular shell (13).

6. A dual-spike dual-voice-coil bass unit according to claim 4, characterized in that: Several layers of dustproof netting are fixed inside both the upper annular shell (11) and the lower annular shell (13).

7. A dual-spike dual-voice-coil bass unit according to claim 1, characterized in that: The magnetic circuit system (20) includes a magnet (21), two pole plates (22) and a pole post (23). The two pole plates (22) are fixed on the upper and lower sides of the magnet (21) respectively. The magnet (21) and the pole plates (22) are both fixed on the inner wall of the housing (10). The pole post (23) is fixed on the inner wall of the voice coil tube (30). The two voice coil coils (40) are respectively set in the gap between the pole post (23) and the two pole plates (22).

8. A dual-spike dual-voice-coil bass unit according to claim 1, characterized in that: The bottom of the drum paper (80) is integrally formed with a dust cap (110), which is located directly above the voice coil tube (30).

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