Double-passive-basin sound equipment structure and installation method thereof
By designing a dual passive radiator structure and a heat dissipation mechanism, the problems of poor heat dissipation and low cutoff frequency of passive radiator speakers are solved, achieving efficient heat dissipation and improved sound quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-04-07
AI Technical Summary
Passive cone speakers have poor heat dissipation, which leads to increased voice coil temperature, affecting sound quality. They also have a low cutoff frequency and poor transient stability.
It adopts a dual passive radiator structure, combined with a heat dissipation mechanism of heat conduction ring and semiconductor cooling ring, and cools down by circulating liquid medium in the condenser tube. Combined with the design of sound-absorbing cotton felt and magnetic column, the heat dissipation path of the voice coil is optimized.
The improved heat dissipation and cutoff frequency of the speaker ensure stable voice coil temperature, thereby enhancing sound quality and transient stability.
Smart Images
Figure CN121815164A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of sound technology, in particular to a double-passive-bowl sound structure and its installation method. BACKGROUND
[0002] The passive bowl of the sound box, also known as passive radiation bowl or empty paper bowl, is a special loudspeaker design used to enhance low-frequency response and improve efficiency. It usually appears in inverted phase sound boxes and some small caliber sound boxes as an alternative to the inverse phase tube, although the passive bowl sound box has higher efficiency and can effectively utilize the box space, but compared with the inverse phase tube, its corresponding cutoff curve is steeper, the cutoff frequency is lower, and the transient stability is poorer, and the passive bowl cannot provide ventilation and heat dissipation like the inverse phase tube; when the sound is used, a large amount of heat is generated by the voice coil, the voice coil is arranged in the magnetic gap, and the magnetic gap is closed, so that the heat in the magnetic gap cannot be effectively dissipated, causing the temperature of the voice coil and other elements to rise and thus affecting the sound quality. SUMMARY
[0003] The purpose of the present application is to solve the problems in the background art, and to provide a double-passive-bowl sound structure that can improve its cutoff frequency while increasing the heat dissipation.
[0004] The technical scheme of the present application: a double-passive-bowl sound structure, comprising a fixed frame, a bowl frame is detachably connected on both sides of the fixed frame, an audio bowl is installed on the outer side of the bowl frame, and a wave spring is arranged between the middle part of the bowl frame and the audio bowl; Further comprising an acoustic cotton felt arranged inside the fixed frame, a magnetic guide column, a magnet and a magnetic guide plate are sequentially arranged on both sides of the acoustic cotton felt, and the magnetic guide plate and the middle part of the wave spring are separated by the bowl frame; Further comprising a heat dissipation mechanism arranged on the fixed frame, the heat dissipation mechanism is used for cooling the heat generated by the voice coil, and the heat dissipation mechanism comprises a fixed ring sleeved on the outer wall of the fixed frame, and a semiconductor refrigeration ring is fixedly installed on both sides of the fixed ring. Optionally, a lap joint groove is formed on the circumferential outer wall of the bowl frame, the circumferential outer wall of the audio bowl is arranged in the lap joint groove, and the audio bowl is fixed by a ring-shaped pressing edge arranged at the position of the lap joint groove, and a folding ring is arranged on the position close to the circumferential outer wall of the audio bowl, the outer side edge of the folding ring is lap jointed with the inner side edge of the ring-shaped pressing edge, and a dust cover is further arranged on the outer side of the middle part of the audio bowl.
[0005] Optionally, the wave spring is a circular ring structure, a circular ring groove is formed on the outer wall of the bowl frame, the wave spring is arranged in the circular ring groove, and the outer wall of the wave spring is connected and fixed with the inner wall of the circular ring groove, an installation groove is formed through the middle part of the bowl frame, and a voice coil is inserted into the installation groove.
[0006] Optionally, the outer end of the voice coil is provided with a fan-shaped ring, the outer wall of the voice coil is in lap joint with the outer wall of the elastic wave, the inner end of the voice coil extends to the middle position of the magnet along the central axis of the cone, the magnetic conducting column is inserted in the inner part of the voice coil along the central axis of the cone, the outer end edge of the voice coil is in lap joint with the inner wall of the cone, and the diameter of the dust cover is greater than the diameter of the voice coil.
[0007] Optionally, the first gap exists between the inner wall of the mounting groove and the outer wall of the voice coil, the second gap exists between the inner wall of the magnetic conducting plate and the outer wall of the voice coil, and the third gap exists between the inner wall of the magnet and the outer wall of the voice coil, the width of the first gap is greater than the width of the third gap along the radial direction of the magnetic conducting plate, and the width of the third gap is greater than the width of the second gap.
[0008] Optionally, the two sides of the sound-absorbing cotton felt are provided with convex rings, the convex rings are inserted in the middle position of the magnetic conducting column, and the outer wall of the convex ring is in lap joint with the middle outer wall of the magnetic conducting column.
[0009] Optionally, a plurality of insertion blocks are fixedly installed on the outer wall of the fixing frame in a ring shape and at equal intervals, the outer wall of the basin frame is provided with an insertion groove, the insertion blocks and the insertion groove are in insertion fit, a plurality of groups of condensation pipes are wound around the middle part of the fixing frame, the condensation pipes are arranged in a wrapping manner at the middle position of the fixing frame, and a plurality of positioning holes are formed in the fixing frame, and the positioning holes are used for fixing the condensation pipes.
[0010] Optionally, a ring-shaped groove is formed in the middle part of the fixing ring, a plurality of groups of condensation pipes are arranged in a wrapping manner on the inner wall of the ring-shaped groove, a heat-conducting ring is arranged on the outer wall of the basin frame, a clamping groove is formed in the outer wall of the heat-conducting ring, and the semiconductor refrigeration ring is clamped in the clamping groove.
[0011] Optionally, the box body is further provided, the two side outer walls of the box body are fixedly connected with the outer side edges of the basin frames, a capsule is arranged between the middle parts of the two basin frames in the inside of the box body, the capsule is filled with refrigerant liquid, and the condensation pipes pass through the inside of the capsule for cooling the condensation pipes. The hot end of the semiconductor refrigeration ring is attached to the outer wall of the basin frame, and the cold end of the semiconductor refrigeration ring is attached to the outer wall of the capsule.
[0012] A mounting method of a double-passive basin sound structure, comprising the following steps: Step 1, the two basin frames are fixed by taking the fixing frame as the center support, and the fixing ring is clamped with the fixing frame to connect and fix the fixing ring with the inner wall of the box body. Step 2, the sound-absorbing cotton felt is fixed in the middle position of the fixing frame, the magnetic conducting column, the magnet and the magnetic conducting plate are sequentially laid on both sides of the sound-absorbing cotton felt, and the voice coil is inserted into the inside of the sound basin, and is fixed by the fixing frame and the basin frame.
[0013] In summary, the present application includes at least one of the following beneficial technical effects: The present application sets up the heat dissipation mechanism, the heat conducting ring on the basin frame, and the semiconductor refrigeration ring on the fixing frame, so that when the sound inside generates high temperature, the liquid medium in the condenser pipe circulates to effectively cool the voice coil position, ensuring the sound quality of the sound. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a schematic diagram of the overall structure of the sound; Figure 2 It is a schematic diagram of the overall structure of the sound; Figure 3 It is Figure 2 It is a schematic diagram of the enlarged structure at A; Figure 4 It is a schematic diagram of the structure when the fixing frame and the basin frame are separated; Figure 5 It is a schematic diagram of the structure when the fixing ring and the fixing frame are separated; Figure 6 It is a schematic diagram of the cross-sectional structure of the sound; Figure 7 It is Figure 6 It is a schematic diagram of the enlarged structure at B; Figure 8 It is a schematic diagram of the explosion structure of the sound; Figure 9 It is a schematic diagram of the overall structure of the basin frame; Figure 10 It is a schematic diagram of the cross-sectional structure of the basin frame; Figure 11 It is a schematic diagram of the cross-sectional structure of the sound structure installed in the box body.
[0015] Reference signs: 100, basin frame; 101, mounting groove; 102, plug-in groove; 103, lap joint groove; 104, circular groove; 105, first gap; 110, heat conducting ring; 111, clamping groove; 120, edge pressing; 200, fixing ring; 201, annular groove; 210, semiconductor refrigeration ring; 220, fixing frame; 221, plug-in block; 222, positioning hole; 230, condenser pipe; 300, sound basin; 310, folded ring; 320, dust cover; 330, box body; 331, capsule; 400, elastic wave; 500, magnetic conducting plate; 501, second gap; 510, magnet; 511, third gap; 520, voice coil; 521, fan-shaped ring; 530, magnetic conducting column; 540, sound-absorbing cotton felt; 541, convex ring. DETAILED DESCRIPTION
[0016] The technical solutions of the present application are further described in detail below in combination with the drawings and specific embodiments.
[0017] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application.
[0018] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative labor fall within the scope of protection of the present application.
[0019] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0020] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0021] As Figures 1 to 11As shown, the application provides a double-passive bass sound structure, which comprises a fixing frame 220, two sides of the fixing frame 220 are detachably connected with a bass frame 100, an outer side of the bass frame 100 is provided with a sound basin 300, and a hammer 400 is arranged between the middle part of the bass frame 100 and the sound basin 300; further comprising sound-absorbing cotton felt 540 arranged at an inner position of the fixing frame 220, a magnetic guide column 530, a magnet 510 and a magnetic guide plate 500 are sequentially arranged at both sides of the sound-absorbing cotton felt 540, and the magnetic guide plate 500 is separated from the middle part of the hammer 400 through the bass frame 100. Specifically, in the application, the overall structure of the sound structure comprises a fixing frame 220 for fixing the entire sound structure, a bass frame 100 is fixedly installed at both ends of the fixing frame 220, a sound basin 300 is arranged at an outer position of the bass frame 100, that is, a passive basin, and the sound basin 300 is similar to an inverse phase tube. The sound basin 300 can be understood as a diaphragm, which is a key component for converting electrical signals into sound waves in a sound device. The voice coil 520 vibrates in the magnetic field after being energized, driving the sound basin 300 to vibrate synchronously, pushing the air to generate sound waves, and realizing the diffusion of sound.
[0022] In the application, two groups of sound basins 300 are arranged at both sides of the fixing frame 220 in a symmetrical structure. In actual use, the two sound basins 300 in the application can be high-pitched and low-pitched diaphragms, which can process high-frequency and low-frequency respectively, realize more accurate frequency band separation, and effectively improve the playing quality of the sound device.
[0023] It should be noted that, compared with the inverse phase tube, the sound basin 300 eliminates the influence of wind noise on sound quality, but its heat dissipation is poor. When the sound device is used, high temperature gas is easily gathered on one side of the sound basin 300, which affects the sound quality of the sound device. The inverse phase tube can guide the exchange of air inside and outside the cabinet to achieve heat dissipation. Therefore, for the sound basin 300 structure, especially the double sound basin 300 structure of the sound device mentioned in the application, good heat dissipation is an indispensable condition to ensure the sound quality of the sound device. Therefore, in the application, a heat dissipation mechanism is arranged on the fixing frame 220, which is used for cooling the heat generated at the voice coil 520. The heat dissipation mechanism comprises a fixing ring 200 sleeved on the outer wall of the fixing frame 220, and a semiconductor refrigeration ring 210 is fixedly installed at both sides of the fixing ring 200. The semiconductor refrigeration ring 210 utilizes the Peltier effect to transfer heat, and utilizes the temperature generated during the use of the sound device to effectively cool the position of the voice coil 520, so as to ensure the sound quality of the sound device during use.
[0024] Further, in the application, the circumferential outer wall of the yoke 100 is provided with a lap joint groove 103, the circumferential outer wall of the sound basin 300 is arranged in the lap joint groove 103, and is fixed by the annular pressing edge 120 arranged at the position of the lap joint groove 103. The sound basin 300 is provided with a folded ring 310 near the position of the circumferential outer wall, the outer edge of the folded ring 310 is overlapped with the inner edge of the annular pressing edge 120, and the outer side of the middle part of the sound basin 300 is further provided with a dust cover 320. In order to ensure the stability of the structure of the sound basin 300, the circumferential outer side of the yoke 100 is provided with a lap joint groove 103, the outer wall of the sound basin 300 is arranged in the lap joint groove 103, and the inner wall of the lap joint groove 103 can fix the position of the sound basin 300. Further, in the application, the circumferential outer wall of the sound basin 300 is fixed in position relative to the yoke 100 by the pressing edge 120, and the folded ring 310 is further arranged on the circumferential outer wall of the sound basin 300. The folded ring 310 connects the sound basin 300 and the yoke 100 by elastic material (such as rubber, cloth or plastic), so as to ensure that the sound basin 300 only vibrates along the axis of the loudspeaker, while suppressing lateral displacement, ensuring normal use of the sound basin 300, and the outer edge of the folded ring 310 is overlapped with the outer wall of the pressing edge 120, which can further avoid the lateral displacement of the sound basin 300 during vibration, ensuring the stability of the structure of the sound basin 300. The above-mentioned lateral displacement refers to the displacement perpendicular to the central axis of the sound basin 300.
[0025] Specifically, in the application, the elastic wave 400 is a circular ring structure, the outer wall of the yoke 100 is provided with a circular ring groove 104, the elastic wave 400 is arranged in the circular ring groove 104, and the outer wall of the elastic wave 400 is connected and fixed with the inner wall of the circular ring groove 104. The installation groove 101 is arranged in the middle part of the yoke 100, and the voice coil 520 is inserted in the installation groove 101. For the elastic wave 400, the inner end is connected and fixed with the outer wall of the voice coil 520 through elastic rubber, which can effectively fix the position of the voice coil 520, while ensuring that it can move axially in the magnetic field, avoiding the voice coil 520 rubbing or distortion caused by lateral displacement. The outer wall of the elastic wave 400 is overlapped with the inner wall of the circular ring groove 104 arranged on the yoke 100, which can ensure the relative fixation of the position in the direction perpendicular to the central axis of the sound basin 300, so as to ensure that the voice coil 520 connected elastically at the middle part is always at the center position of the magnetic gap, and the voice coil 520 can vibrate at any frequency in the direction perpendicular to the central axis of the sound basin 300, realizing dynamic fixation of the voice coil 520.
[0026] Specifically, the outer end of the voice coil 520 is provided with a fan-shaped ring 521, the outer wall of the voice coil 520 is in lap with the outer wall of the damper 400, the inner end of the voice coil 520 extends to the middle position of the magnet 510 along the central axis of the cone 300, the magnetic conducting column 530 is inserted in the inner part of the voice coil 520 along the central axis of the cone 300, the outer end edge of the voice coil 520 is in lap with the inner wall of the cone 300, and the diameter of the dust cover 320 is greater than the diameter of the voice coil 520. By being arranged at the outer end of the voice coil 520, that is, close to the cone 300, in this way, the stable vibration of the voice coil 520 on the central axis of the cone 300 can be ensured, and the fan-shaped ring 521 is arranged at a position corresponding to the position connected with the damper 400, so that the stability of the connection between the damper 400 and the voice coil 520 can be ensured, thereby ensuring that the sound will not be distorted during use.
[0027] Referring to the accompanying drawings Figure 7 Further, the inner wall of the mounting groove 101 is in a first gap 105 with the outer wall of the voice coil 520, the inner wall of the magnetic conducting plate 500 is in a second gap 501 with the outer wall of the voice coil 520, and the inner wall of the magnet 510 is in a third gap 511 with the outer wall of the voice coil 520. Along the radial direction of the magnetic conducting plate 500, the width of the first gap 105 is greater than the width of the third gap 511, and the width of the third gap 511 is greater than the width of the second gap 501. Specifically, the above-mentioned magnetic conducting column 530, magnet 510 and magnetic conducting plate 500 are not in contact with the voice coil 520, and the above-mentioned first gap 105, second gap 501 and third gap 511 are collectively referred to as a magnetic gap, which is the core area of the electro-acoustic conversion in the sound, and the magnetic gap can provide a stable magnetic field, so that the voice coil 520 is uniformly stressed and harmonic distortion is reduced.
[0028] Further, in the present application, referring to the accompanying drawings Figure 6 Further, the two sides of the sound-absorbing cotton felt 540 are provided with a convex ring 541, the convex ring 541 is inserted in the middle position of the magnetic conducting column 530, and the outer wall of the convex ring 541 is in lap with the middle outer wall of the magnetic conducting column 530. The sound-absorbing cotton felt 540 arranged in this way can absorb the sound wave energy in the sound, effectively reducing the endless reflection of the sound wave in the sound box, thereby reducing the interference of the box resonance and standing wave, and the two ends of the sound-absorbing cotton felt 540 are also provided with the convex ring 541, which is inserted in the middle position of the magnetic conducting column 530, thereby reducing the reflection and rebound times of the sound wave in the magnetic conducting column 530 and absorbing the sound wave.
[0029] In particular, in the present application, the position of the voice coil 520 needs to be cooled to ensure the sound quality of the sound, specifically, a plurality of plug blocks 221 are fixedly installed on the outer wall of the fixed frame 220 in a ring shape at equal intervals, the outer wall of the basin frame 100 is provided with a plug slot 102, the plug blocks 221 and the plug slots 102 are plug-fit matched, a plurality of condenser pipes 230 are wound around the middle part of the fixed frame 220, the condenser pipes 230 are arranged in a wrapped manner at the middle part of the fixed frame 220, and a plurality of positioning holes 222 are provided on the fixed frame 220, which are used to fix the condenser pipes 230. The middle part of the fixed ring 200 is provided with a ring-shaped groove 201, and a plurality of condenser pipes 230 are arranged in a wrapped manner on the inner wall of the ring-shaped groove 201. The basin frame 100 is provided with a heat-conducting ring 110, and the outer wall of the heat-conducting ring 110 is provided with a clamping groove 111. The semiconductor refrigeration ring 210 is clamped in the clamping groove 111. Through the setting, specifically, in the present application, the corresponding fixed frame 220 is made of metal material, which can be understood as a heat-conducting plate. When the low-temperature liquid medium in the condenser pipe 230 passes through, the temperature of the corresponding fixed frame 220 will be reduced. Further, the end part of the fixed frame 220 is connected and fixed between the fixed frame 220 and the fixed ring 200 through the plug blocks 221 and the plug-fit relationship between the plug blocks 221 and the plug slots 102. Therefore, the low-temperature fixed frame 220 will also be conducted to the inner end position of the basin frame 100, and the inner end position is the position of the voice coil 520. Through this way, the effective cooling of the voice coil 520 can be realized.
[0030] Further, regarding the installation position of the hot end and the cold end of the semiconductor refrigeration ring 210, as mentioned above, in the sound with the sound cone 300 structure, due to the vibration of the sound cone 300, the airflow will be disturbed, which will cause local heat accumulation. The corresponding accumulated position is the connection position of the end of the voice coil 520 and the sound cone 300. Therefore, in the present application, the hot end of the semiconductor refrigeration ring 210 is attached to the basin frame 100 and close to the connection position of the voice coil 520, so that the temperature of the cold end of the semiconductor refrigeration ring 210 is reduced by the temperature rise at this position.
[0031] As an embodiment, the box body 330 is further included in the present application, two side outer walls of the box body 330 are fixedly connected with outer side edges of the basin frames 100, a capsule body 331 is arranged between the middle portions of the two basin frames 100 inside the box body 330, the capsule body 331 is filled with refrigerant liquid, the condensing pipe 230 passes through the inside of the capsule body 331 and is used for cooling the condensing pipe 230, the hot end of the semiconductor refrigeration ring 210 is attached to the outer wall of the basin frame 100, and the cold end of the semiconductor refrigeration ring 210 is attached to the outer wall of the capsule body 331. As an embodiment, the above-mentioned double-passive-basin sound structure is arranged in the box body 330, and it needs to be noted that the box body 330 is mainly used for supporting the sound structure, but it needs to be mentioned that the cold end of the above-mentioned semiconductor refrigeration ring 210 is arranged at the position of the capsule body 331 in the box body 330, and the purpose is to cool the refrigerant liquid in the capsule body 331, and the corresponding condensing pipe 230 passes through the inside of the capsule body 331, and the liquid medium in the condensing pipe 230 is also cooled, and when the low-temperature liquid medium in the condensing pipe 230 flows through the positions of the fixing frame 220 and the fixing ring 200, the metal thermal conductivity can be used to effectively cool the position of the voice coil 520, so as to ensure the sound quality of the sound.
[0032] A mounting method of a double-passive-basin sound structure, comprising the following steps: Step 1: fixing the two basin frames 100 with the fixing frame 220 as the center support, and clamping the fixing ring 200 and the fixing frame 220, so that the fixing ring 200 is fixedly connected with the inner wall of the box body 330; Step 2: fixing the sound-absorbing cotton felt 540 at the middle position of the fixing frame 220, laying the magnetic conductive column 530, the magnet 510 and the magnetic conductive plate 500 in sequence at the two sides of the sound-absorbing cotton felt 540, and inserting the voice coil 520 into the inside of the sound cone 300, and fixing the voice coil 520 by means of the fixing frame 220 and the basin frame 100.
[0033] The above specific embodiments are only several optional embodiments of the present application, and based on the technical scheme of the present application and the related inspiration of the above embodiments, those skilled in the art can make various alternative improvements and combinations on the above specific embodiments.
Claims
1. A double passive radiator acoustic structure, characterized in that, include: A mounting bracket (220) is provided, with a basin frame (100) detachably connected to both sides of the mounting bracket (220). A cone (300) is installed on the outer side of the basin frame (100), and a spring (400) is provided between the basin frame (100) and the cone (300). It also includes a sound-absorbing cotton felt (540) disposed inside the fixed frame (220), and magnetic guide columns (530), magnets (510) and magnetic guide plates (500) are arranged sequentially on both sides of the sound-absorbing cotton felt (540), and the magnetic guide plates (500) are separated from the middle of the spring wave (400) by the frame (100); It also includes a heat dissipation mechanism disposed on the fixed frame (220), which is used to cool down the heat generated at the voice coil (520). The heat dissipation mechanism includes a fixing ring (200) sleeved on the outer wall of the fixed frame (220), and semiconductor cooling rings (210) are fixedly installed on both sides of the fixing ring (200).
2. The double passive radiator acoustic structure according to claim 1, characterized in that, The circumferential outer wall of the frame (100) is provided with an overlap groove (103), the circumferential outer wall of the cone (300) is disposed in the overlap groove (103) and is fixed by an annular pressing edge (120) disposed at the position of the overlap groove (103), and a folding ring (310) is provided near the circumferential outer wall of the cone (300), the outer edge of the folding ring (310) is overlapped with the inner edge of the annular pressing edge (120), and a dust cover (320) is also provided on the outer side of the middle part of the cone (300).
3. The double passive radiator acoustic structure according to claim 2, characterized in that, The spring (400) has a circular structure. A circular groove (104) is provided on the outer wall of the basket (100). The spring (400) is disposed in the circular groove (104), and the outer wall of the spring (400) is connected and fixed to the inner wall of the circular groove (104). A mounting groove (101) is provided through the middle of the basket (100), and a voice coil (520) is inserted in the mounting groove (101).
4. The double passive radiator structure according to claim 3, characterized in that, A fan-shaped ring (521) is provided on the inner side of the outer end of the voice coil (520). The outer wall of the voice coil (520) overlaps with the outer wall of the spider (400). Along the central axis of the cone (300), the inner end of the voice coil (520) extends to the middle position of the magnet (510). The magnetic post (530) is inserted inside the voice coil (520). Along the central axis of the cone (300), the outer edge of the outer end of the voice coil (520) overlaps with the inner wall of the cone (300). The diameter of the dust cover (320) is larger than the diameter of the voice coil (520).
5. A double passive radiator acoustic structure according to claim 4, characterized in that, There is a first gap (105) between the inner wall of the mounting groove (101) and the outer wall of the voice coil (520), a second gap (501) between the inner wall of the magnetic plate (500) and the outer wall of the voice coil (520), and a third gap (511) between the inner wall of the magnet (510) and the outer wall of the voice coil (520). Along the radial direction of the magnetic plate (500), the width of the first gap (105) is greater than the width of the third gap (511), and the width of the third gap (511) is greater than the width of the second gap (501).
6. The double passive radiator structure according to claim 5, characterized in that, The sound-absorbing cotton felt (540) has protruding rings (541) on both sides. The protruding rings (541) are inserted into the middle of the magnetic column (530), and the outer wall of the protruding rings (541) overlaps with the middle outer wall of the magnetic column (530).
7. A double passive radiator structure according to claim 6, characterized in that, Multiple plug-in blocks (221) are fixedly installed in a ring at equal intervals on both sides of the outer wall of the fixed frame (220). A plug-in groove (102) is provided on the outer wall of the basin frame (100). The plug-in blocks (221) and the plug-in groove (102) are plugged in and engaged. Multiple sets of condenser tubes (230) are wrapped around the middle of the fixed frame (220). The condenser tubes (230) are arranged in a wrapped shape in the middle position of the fixed frame (220). Multiple positioning holes (222) are provided on the fixed frame (220). The positioning holes (222) are used to fix the condenser tubes (230).
8. A double passive radiator structure according to claim 7, characterized in that, The fixing ring (200) has an annular groove (201) in the middle. Multiple sets of condenser tubes (230) are arranged in a wrapping shape on the inner wall of the annular groove (201). A heat-conducting ring (110) is provided on the outer wall of the basin frame (100), and a snap-fit groove (111) is provided on the outer wall of the heat-conducting ring (110). The semiconductor cooling ring (210) is snapped into the snap-fit groove (111).
9. A double passive radiator structure according to claim 8, characterized in that, It also includes a box body (330), the outer walls of the two sides of the box body (330) are fixedly connected to the outer edge of the basin frame (100), and a bladder (331) is provided inside the box body (330) between the middle of the two basin frames (100). The bladder (331) is filled with refrigerant, and the condenser tube (230) passes through the inside of the bladder (331) to cool the condenser tube (230). The hot end of the semiconductor cooling ring (210) is attached to the outer wall of the basin (100), and the cold end of the semiconductor cooling ring (210) is attached to the outer wall of the bladder (331).
10. A method for installing a double passive radiator structure, used to design a double passive radiator structure as described in claim 9, characterized in that, Includes the following steps: Step 1: Fix the two basin stands (100) with the fixing frame (220) as the center support, and snap the fixing ring (200) into the fixing frame (220) so that the fixing ring (200) is connected and fixed to the inner wall of the box (330); Step 2: Fix the sound-absorbing cotton felt (540) in the middle of the fixing frame (220), lay the magnetic column (530), magnet (510) and magnetic plate (500) on both sides of the sound-absorbing cotton felt (540), and insert the voice coil (520) into the inside of the cone (300), and use the fixing frame (220) and the frame (100) for auxiliary fixation.