A dual midrange diaphragm coaxial midrange unit

Abstract

The utility model discloses a kind of double-midrange diaphragm coaxial mid-high sound unit, it is related to mid-high sound unit technical field, including shell, the inside center of shell is vertically fixed with hollow shaft cylinder, shell top is fixed with high sound magnetic circuit, high sound magnetic circuit is coaxially arranged in the top of shaft cylinder, high sound diaphragm is fixed on shaft cylinder, high sound voice coil is fixed on high sound diaphragm, high sound magnetic circuit bottom is fixed with high sound phase plug, upper bass magnetic circuit, lower bass magnetic circuit and bass phase plug are fixed on the outer wall of shaft cylinder and are surrounded, upper bass diaphragm and lower bass diaphragm are respectively fixed with upper bass diaphragm on the upper and lower ends of bass phase plug, upper bass voice coil is fixed on upper bass diaphragm, lower bass voice coil is fixed on lower bass diaphragm, the double-midrange diaphragm coaxial mid-high sound unit of the utility model can ensure that the propagation path of mid-high sound wave is coaxial, phase consistent, can significantly reduce the difference of sound propagation path, avoid phase deviation, to improve the accuracy of sound field positioning.

Description

Technical Field

[0001] This utility model relates to the field of mid-high frequency unit technology, and in particular to a dual mid-frequency diaphragm coaxial mid-high frequency unit. Background Technology

[0002] The mid-high frequency unit is the core sound-producing component of an audio system. It is mainly responsible for the sound reproduction in the mid-high frequency range from 1kHz to 20kHz, covering the core frequency ranges of vocals, strings, woodwind instruments, etc. It directly affects the clarity and emotional transmission of the sound and is a key link that determines the "realism" and "emotional appeal" of the audio system. It is widely used in home audio and other fields.

[0003] Existing mid-high frequency units suffer from sound distortion and poor user experience due to differences in the propagation paths of mid-range and high-frequency frequencies and phase deviations. Utility Model Content

[0004] In view of the defects of the existing technology, the purpose of this utility model is to provide a dual midrange diaphragm coaxial midrange-high frequency unit, which can solve the problem of sound distortion caused by the difference in the propagation path and phase deviation of the midrange and high frequency in the midrange-high frequency unit.

[0005] The objective of this utility model is achieved through the following technical solution:

[0006] A dual-diaphragm coaxial midrange / tweeter unit includes a housing. A hollow shaft cylinder is vertically fixed at the center of the housing. A tweeter magnetic circuit is fixed at the top of the housing and coaxially arranged above the shaft cylinder. A tweeter diaphragm is fixed on the shaft cylinder, and a tweeter voice coil is fixed on the tweeter diaphragm. The tweeter voice coil is disposed on the tweeter magnetic circuit. A tweeter phase plug is fixed at the bottom of the tweeter magnetic circuit and disposed within the hollow area of ​​the shaft cylinder. A circumferential fixing is also provided on the outer wall of the shaft cylinder. It has an upper midrange magnetic circuit, a lower midrange magnetic circuit, and a midrange phase plug. The outer side of the midrange phase plug is fixed to the inner wall of the housing. The midrange phase plug is disposed between the upper midrange magnetic circuit and the lower midrange magnetic circuit. An upper midrange diaphragm and a lower midrange diaphragm are respectively fixed to the upper and lower ends of the midrange phase plug. An upper midrange voice coil is fixed on the upper midrange diaphragm and disposed on the upper midrange magnetic circuit. A lower midrange voice coil is fixed on the lower midrange diaphragm and disposed on the lower midrange magnetic circuit.

[0007] Preferably, the tweeter magnetic circuit includes a tweeter magnet and a tweeter magnetic post. The tweeter magnet is fixed to the top of the housing, and a housing cover is fixed to the top of the tweeter magnet. The tweeter magnetic post is fixed to the bottom of the housing cover. A tweeter magnetic gap is left between the tweeter magnet and the tweeter magnetic post. The tweeter voice coil is disposed in the tweeter magnetic gap. The tweeter phase plug is fixed to the bottom of the tweeter magnetic post. One end of the tweeter diaphragm is fixed to the shaft cylinder, and the other end is fixed between the tweeter magnetic post and the tweeter phase plug.

[0008] Preferably, the shell cover, the high-frequency magnetic post, and the high-frequency phase plug are fixedly connected by bolts.

[0009] Preferably, the upper midrange magnetic circuit and the lower midrange magnetic circuit are symmetrically arranged along the midrange phase plug.

[0010] Preferably, the upper midrange magnetic circuit includes an upper midrange magnet, an upper midrange magnetic guide post, and an upper connecting ring. The upper midrange magnetic guide post is fixed around the outer wall of the shaft cylinder, the upper connecting ring is fixed on the upper midrange magnetic guide post, the upper midrange magnet is fixed on the upper connecting ring, an upper midrange magnetic gap is left between the upper midrange magnet and the upper midrange magnetic guide post, and the upper midrange voice coil is disposed in the upper midrange magnetic gap.

[0011] Preferably, the lower midrange magnetic circuit includes a lower midrange magnet, a lower midrange magnetic guide post, and a lower connecting ring. The lower midrange magnetic guide post is fixed around the outer wall of the shaft cylinder, the lower connecting ring is fixed on the lower midrange magnetic guide post, the lower midrange magnet is fixed on the lower connecting ring, a lower midrange magnetic gap is left between the lower midrange magnet and the lower midrange magnetic guide post, and the lower midrange voice coil is disposed in the lower midrange magnetic gap.

[0012] Preferably, the upper and lower ends of the midrange phase plug are respectively fixed with fixing plates on the left and right sides, the two ends of the upper midrange diaphragm are respectively fixed in the gap between the two fixing plates at the upper end of the midrange phase plug, and the two ends of the lower midrange diaphragm are respectively fixed in the gap between the two fixing plates at the lower end of the midrange phase plug.

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

[0014] This utility model discloses a dual-midrange diaphragm coaxial midrange-high frequency unit. A hollow shaft is vertically fixed at the center of the housing. A high-frequency magnetic circuit is fixed at the top of the housing and coaxially positioned above the shaft. A high-frequency diaphragm is fixed on the shaft, and a high-frequency voice coil is fixed on the diaphragm. A high-frequency phase plug is fixed at the bottom of the high-frequency magnetic circuit. An upper midrange magnetic circuit, a lower midrange magnetic circuit, and a midrange phase plug are fixed around the outer wall of the shaft. An upper midrange diaphragm and a lower midrange diaphragm are fixed at the upper and lower ends of the midrange phase plug, respectively. An upper midrange voice coil is fixed on the upper midrange diaphragm, and a lower midrange voice coil is fixed on the lower midrange diaphragm. This dual-midrange diaphragm coaxial midrange-high frequency unit ensures that the propagation paths of midrange and high-frequency sound waves are coaxial and phase-consistent, significantly reducing differences in sound propagation paths, avoiding phase deviations, and thus improving the accuracy of sound field positioning. Attached Figure Description

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

[0016] Figure 2 This is another overall structural schematic diagram of the present invention;

[0017] Figure 3 This is a cross-sectional view of the present invention;

[0018] Figure 4 This is a schematic diagram of the high-frequency phase plug of this utility model;

[0019] Figure 5 This is a schematic diagram of the mid-range phase plug in this utility model;

[0020] Figure 6 This is a schematic diagram of the structure of the high-frequency diaphragm and the upper mid-frequency diaphragm of this utility model.

[0021] In the diagram: 10, housing; 20, shaft cylinder; 30, tweeter magnetic circuit; 31, tweeter magnet; 32, tweeter magnetic guide post; 33, housing cover; 34, tweeter magnetic gap; 40, tweeter diaphragm; 50, tweeter voice coil; 60, tweeter phase plug; 70, upper midrange magnetic circuit; 71, upper midrange magnet; 72, upper midrange magnetic guide post; 73, upper connecting ring; 74, upper midrange magnetic gap; 80, lower midrange magnetic circuit; 81, lower midrange magnet; 82, lower midrange magnetic guide post; 83, lower connecting ring; 84, lower midrange magnetic gap; 90, midrange phase plug; 100, upper midrange diaphragm; 110, lower midrange diaphragm; 120, upper midrange voice coil; 130, lower midrange voice coil; 140, fixing clamp. 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-midrange diaphragm coaxial midrange-high frequency unit includes a housing 10. A hollow shaft cylinder 20 is vertically fixed at the center of the housing 10. A tweeter magnetic circuit 30 is fixed at the top of the housing 10 and coaxially arranged above the shaft cylinder 20. A tweeter diaphragm 40 is fixed on the shaft cylinder 20, and a tweeter voice coil 50 is fixed on the tweeter diaphragm 40. The tweeter voice coil 50 is disposed on the tweeter magnetic circuit 30. A tweeter phase plug 60 is fixed at the bottom of the tweeter magnetic circuit 30 and disposed within the hollow area of ​​the shaft cylinder 20. An upper midrange driver is fixedly arranged around the outer wall of the shaft cylinder 20. The system includes a magnetic circuit 70, a lower midrange magnetic circuit 80, and a midrange phase plug 90. The outer side of the midrange phase plug 90 is fixed to the inner wall of the housing 10. The midrange phase plug 90 is located between the upper midrange magnetic circuit 70 and the lower midrange magnetic circuit 80. The upper and lower ends of the midrange phase plug 90 are respectively fixed with an upper midrange diaphragm 100 and a lower midrange diaphragm 110. An upper midrange voice coil 120 is fixed on the upper midrange diaphragm 100 and is located on the upper midrange magnetic circuit 70. A lower midrange voice coil 130 is fixed on the lower midrange diaphragm 110 and is located on the lower midrange magnetic circuit 80.

[0024] In use, audio electrical signals are input to the tweeter voice coil 50, the upper midrange voice coil 120, and the lower midrange voice coil 130, respectively. The tweeter voice coil 50 is located on the tweeter magnetic circuit 30, and the upper midrange voice coil 120 and the lower midrange voice coil 130 are located on the upper midrange magnetic circuit 70 and the lower midrange magnetic circuit 80, respectively. When an alternating current is passed through the voice coil, the voice coil is driven by the Ampere force in the magnetic field generated by the magnetic circuit system, which drives the tweeter diaphragm 40, the upper midrange diaphragm 100, and the lower midrange diaphragm 110 to vibrate together. The vibrating diaphragms push the surrounding air to form sound waves, realizing the conversion of electroacoustic energy. The tweeter voice coil 50, the upper midrange voice coil 120, and the lower midrange voice coil 130 are coaxially set to ensure that the propagation path of the mid-high frequency sound waves is coaxial and the phase is consistent, which can significantly reduce the difference in sound propagation path, avoid phase deviation, and thus improve the accuracy of sound field positioning.

[0025] The tweeter phase plug 60 can correct the phase of high-frequency sound waves, reduce standing waves and reflection delay, and eliminate off-axis frequency response peaks and valleys. The tweeter phase plug 60 improves high-frequency directivity through the sound wave compression effect of the conical hole. The mid-frequency phase plug 90 can collect mid-frequency sound waves and compress the propagation path, reducing off-axis sound energy loss. The mid-frequency phase plug 90 equalizes the air pressure distribution through the hollow structure and suppresses split vibration. Together with the tweeter phase plug 60, it achieves precise alignment of mid- and high-frequency sound images.

[0026] Preferably, the tweeter magnetic circuit 30 includes a tweeter magnet 31 and a tweeter magnetic post 32. The tweeter magnet 31 is fixed to the top of the housing 10, and a housing cover 33 is fixed to the top of the tweeter magnet 31. The tweeter magnetic post 32 is fixed to the bottom of the housing cover 33. A tweeter magnetic gap 34 is left between the tweeter magnet 31 and the tweeter magnetic post 32. The tweeter voice coil 50 is disposed in the tweeter magnetic gap 34. The tweeter phase plug 60 is fixed to the bottom of the tweeter magnetic post 32. One end of the tweeter diaphragm 40 is fixed to the shaft cylinder 20, and the other end is fixed between the tweeter magnetic post 32 and the tweeter phase plug 60.

[0027] Preferably, the cover 33, the tweeter magnetic post 32, and the tweeter phase plug 60 are fixedly connected by bolts.

[0028] Preferably, the upper midrange magnetic circuit 70 and the lower midrange magnetic circuit 80 are symmetrically arranged along the midrange phase plug 90.

[0029] Preferably, the upper midrange magnetic circuit 70 includes an upper midrange magnet 71, an upper midrange magnetic guide post 72, and an upper connecting ring 73. The upper midrange magnetic guide post 72 is fixed around the outer wall of the shaft cylinder 20, the upper connecting ring 73 is fixed on the upper midrange magnetic guide post 72, the upper midrange magnet 71 is fixed on the upper connecting ring 73, an upper midrange magnetic gap 74 is left between the upper midrange magnet 71 and the upper midrange magnetic guide post 72, and the upper midrange voice coil 120 is disposed in the upper midrange magnetic gap 74.

[0030] Preferably, the lower midrange magnetic circuit 80 includes a lower midrange magnet 81, a lower midrange magnetic guide post 82, and a lower connecting ring 83. The lower midrange magnetic guide post 82 is fixed around the outer wall of the shaft cylinder 20, the lower connecting ring 83 is fixed on the lower midrange magnetic guide post 82, the lower midrange magnet 81 is fixed on the lower connecting ring 83, a lower midrange magnetic gap 84 is left between the lower midrange magnet 81 and the lower midrange magnetic guide post 82, and the lower midrange voice coil 130 is disposed in the lower midrange magnetic gap 84.

[0031] Preferably, the upper and lower ends of the midrange phase plug 90 are fixed with fixing plates 140 on the left and right sides respectively, the two ends of the upper midrange diaphragm 100 are fixed in the gaps of the two fixing plates 140 at the upper end of the midrange phase plug 90 respectively, and the two ends of the lower midrange diaphragm 110 are fixed in the gaps of the two fixing plates 140 at the lower end of the midrange phase plug 90 respectively.

[0032] This utility model discloses a dual midrange diaphragm coaxial mid-high frequency unit. A hollow shaft cylinder 20 is vertically fixed at the center of the interior of a housing 10. A tweeter magnetic circuit 30 is fixed at the top of the housing 10 and coaxially positioned above the shaft cylinder 20. A tweeter diaphragm 40 is fixed on the shaft cylinder 20, and a tweeter voice coil 50 is fixed on the tweeter diaphragm 40. A tweeter phase plug 60 is fixed at the bottom of the tweeter magnetic circuit 30. An upper midrange magnetic circuit 70 and a lower midrange magnetic circuit are fixedly arranged around the outer wall of the shaft cylinder 20. The midrange phase plug 90 and the upper and lower ends of the midrange phase plug 90 are respectively fixed with an upper midrange diaphragm 100 and a lower midrange diaphragm 110. An upper midrange voice coil 120 is fixed on the upper midrange diaphragm 100 and a lower midrange voice coil 130 is fixed on the lower midrange diaphragm 110. This dual midrange diaphragm coaxial midrange-high frequency unit can ensure that the propagation path of the midrange-high frequency sound waves is coaxial and the phase is consistent, which can significantly reduce the difference in sound propagation path, avoid phase deviation, and thus improve the accuracy of sound field positioning.

[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-diaphragm coaxial midrange / high-frequency unit, comprising a housing (10), characterized in that: A hollow shaft cylinder (20) is vertically fixed at the center of the interior of the housing (10). A high-frequency magnetic circuit (30) is fixed at the top of the housing (10). The high-frequency magnetic circuit (30) is coaxially arranged above the shaft cylinder (20). A high-frequency diaphragm (40) is fixed on the shaft cylinder (20). A high-frequency voice coil (50) is fixed on the high-frequency diaphragm (40). The high-frequency voice coil (50) is arranged on the high-frequency magnetic circuit (30). A high-frequency phase plug (60) is fixed at the bottom of the high-frequency magnetic circuit (30). The high-frequency phase plug (60) is arranged in the hollow area of ​​the shaft cylinder (20). An upper mid-range magnetic circuit (70) and a lower mid-range magnetic circuit (80) are fixed around the outer wall of the shaft cylinder (20). 0) and a mid-range phase plug (90), the outer side of the mid-range phase plug (90) is fixed on the inner wall of the housing (10), the mid-range phase plug (90) is disposed between the upper mid-range magnetic circuit (70) and the lower mid-range magnetic circuit (80), the upper and lower ends of the mid-range phase plug (90) are respectively fixed with an upper mid-range diaphragm (100) and a lower mid-range diaphragm (110), an upper mid-range voice coil (120) is fixed on the upper mid-range diaphragm (100), the upper mid-range voice coil (120) is disposed on the upper mid-range magnetic circuit (70), a lower mid-range voice coil (130) is fixed on the lower mid-range diaphragm (110), and the lower mid-range voice coil (130) is disposed on the lower mid-range magnetic circuit (80).

2. The dual-diaphragm coaxial midrange / high-frequency unit according to claim 1, characterized in that: The high-frequency magnetic circuit (30) includes a high-frequency magnet (31) and a high-frequency magnetic guide post (32). The high-frequency magnet (31) is fixed to the top of the housing (10). A housing cover (33) is fixed to the top of the high-frequency magnet (31). The high-frequency magnetic guide post (32) is fixed to the bottom of the housing cover (33). A high-frequency magnetic gap (34) is left between the high-frequency magnet (31) and the high-frequency magnetic guide post (32). The high-frequency voice coil (50) is disposed in the high-frequency magnetic gap (34). The high-frequency phase plug (60) is fixed to the bottom of the high-frequency magnetic guide post (32). One end of the high-frequency diaphragm (40) is fixed to the shaft cylinder (20), and the other end is fixed between the high-frequency magnetic guide post (32) and the high-frequency phase plug (60).

3. The dual-midrange diaphragm coaxial midrange-high frequency unit according to claim 2, characterized in that: The shell cover (33), the high-frequency magnetic column (32), and the high-frequency phase plug (60) are fixedly connected by bolts.

4. The dual-midrange diaphragm coaxial midrange-high frequency unit according to claim 1, characterized in that: The upper midrange magnetic circuit (70) and the lower midrange magnetic circuit (80) are symmetrically arranged along the midrange phase plug (90).

5. A dual-diaphragm coaxial midrange / high-frequency unit according to claim 4, characterized in that: The upper midrange magnetic circuit (70) includes an upper midrange magnet (71), an upper midrange magnetic guide post (72), and an upper connecting ring (73). The upper midrange magnetic guide post (72) is fixed around the outer wall of the shaft cylinder (20). The upper connecting ring (73) is fixed on the upper midrange magnetic guide post (72). The upper midrange magnet (71) is fixed on the upper connecting ring (73). An upper midrange magnetic gap (74) is left between the upper midrange magnet (71) and the upper midrange magnetic guide post (72). The upper midrange voice coil (120) is disposed in the upper midrange magnetic gap (74).

6. The dual-midrange diaphragm coaxial midrange-high frequency unit according to claim 4, characterized in that: The lower midrange magnetic circuit (80) includes a lower midrange magnet (81), a lower midrange magnetic guide post (82), and a lower connecting ring (83). The lower midrange magnetic guide post (82) is fixed around the outer wall of the shaft cylinder (20). The lower connecting ring (83) is fixed on the lower midrange magnetic guide post (82). The lower midrange magnet (81) is fixed on the lower connecting ring (83). A lower midrange magnetic gap (84) is left between the lower midrange magnet (81) and the lower midrange magnetic guide post (82). The lower midrange voice coil (130) is disposed in the lower midrange magnetic gap (84).

7. The dual-midrange diaphragm coaxial midrange-high frequency unit according to claim 1, characterized in that: The midrange phase plug (90) has fixing plates (140) fixed on the left and right sides of its upper and lower ends respectively. The two ends of the upper midrange diaphragm (100) are fixed in the gaps between the two fixing plates (140) at the upper end of the midrange phase plug (90) respectively. The two ends of the lower midrange diaphragm (110) are fixed in the gaps between the two fixing plates (140) at the lower end of the midrange phase plug (90) respectively.

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