CN216437478U

CN216437478U - Passive radiator and audio amplifier

Info

Publication number: CN216437478U
Application number: CN202122862078.2U
Authority: CN
Inventors: 朱振财; 朱生林
Original assignee: Huizhou Shiwei New Technology Co Ltd
Current assignee: Huizhou Shiwei New Technology Co Ltd
Priority date: 2021-11-19
Filing date: 2021-11-19
Publication date: 2022-05-03
Anticipated expiration: 2031-11-19
Also published as: WO2023088123A1

Abstract

The application provides a passive radiator and a sound box, wherein the passive radiator is enclosed to form a hollow area; the passive radiator includes: a vibration plate disposed in a manner of surrounding the hollow area for performing a vibration motion; the first folding ring is connected with one side, close to the hollow area, of the vibration plate and is used for supporting one side, close to the hollow area, of the vibration plate; and the second folding ring is connected with one side of the vibrating plate, which is far away from the hollow area, and is used for supporting one side of the vibrating plate, which is far away from the hollow area. This application supports the vibration board through first dog-ear and second dog-ear with the mode that surrounds the vibration board setting, keeps the equilibrium and the stability of vibration board for the vibration board also can keep linear vibration under the effect of the resonant air of big developments.

Description

Passive radiator and audio amplifier

Technical Field

The application relates to the technical field of sound boxes, in particular to a passive radiator and a sound box.

Background

In the prior art, a sound box applied to a television and a notebook computer generally adopts an open sound box structure, improves low-frequency response characteristics by arranging an inverter tube, and causes various sound defects such as sound dyeing in the inverter tube, resonance of a guide tube, internal high-frequency sound reflected by the inverter tube and the like. With the passive radiator of the related art, some of the above-mentioned drawbacks of the inverter tube design can be solved, but there is a drawback of sound pressure distortion.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a passive radiator and audio amplifier, supports the vibration board through first dog-ear and second dog-ear with the mode that surrounds the vibration board setting, keeps the equilibrium and the stability of vibration board for the vibration board also can keep linear vibration under the effect of the resonant air of big developments.

The embodiment of the application provides a passive radiator, which is enclosed to form a hollow area; the passive radiator includes:

a vibration plate disposed in a manner of surrounding the hollow area for performing a vibration motion;

the first folding ring is connected with one side, close to the hollow area, of the vibration plate and is used for supporting one side, close to the hollow area, of the vibration plate; and

and the second folding ring is connected with one side of the vibrating plate, which is far away from the hollow area, and is used for supporting one side of the vibrating plate, which is far away from the hollow area.

The embodiment of the application also provides a passive radiator sound box, which comprises a passive radiator.

In the embodiment of the application, the first folding ring is arranged on the vibrating plate and is close to one side of the hollow area, the second folding ring is arranged on the vibrating plate and is far away from one side of the hollow area, the first folding ring and the second folding ring support the vibrating plate in a mode of surrounding the vibrating plate, the balance and the stability of the vibrating plate are kept, the vibrating plate can keep linear vibration under the action of large dynamic resonant air, and the situation of sound pressure distortion caused by non-linear vibration such as shaking or swinging is avoided.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.

Fig. 1 is a schematic overall structure diagram of a first passive radiator according to an embodiment of the present disclosure.

Fig. 2 is a plan view of the passive radiator shown in fig. 1.

Fig. 3 is a sectional view of the passive radiator shown in fig. 2 taken along a direction P1-P1.

Fig. 4 is a right side view of the passive radiator shown in fig. 2.

Fig. 5 is a sectional view of the passive radiator shown in fig. 4, taken along the direction P2-P2.

Fig. 6 is a schematic sectional view of the passive radiator shown in fig. 5, with a negative weight removed.

Fig. 7 is a schematic view of the structure of the negative weight shown in fig. 5.

Fig. 8 is a schematic overall structure diagram of a second passive radiator according to an embodiment of the present application.

Fig. 9 is a sectional view of the passive radiator shown in fig. 8 taken along a direction P3-P3.

Fig. 10 is a cross-sectional view of the passive radiator shown in fig. 8 taken along the direction P4-P4.

Fig. 11 is a schematic overall structure diagram of a third passive radiator according to an embodiment of the present application.

Fig. 12 is a sectional view of the passive radiator shown in fig. 11 taken along the direction P5-P5.

Fig. 13 is a cross-sectional view of the passive radiator shown in fig. 11 taken along the direction P6-P6.

Fig. 14 is a schematic overall structure diagram of a first passive radiator sound box according to an embodiment of the present application.

Fig. 15 is a first exploded view of the passive radiator enclosure of fig. 14.

Fig. 16 is a second exploded view of the passive radiator enclosure of fig. 14.

Fig. 17 is a front view of the passive radiator acoustic enclosure of fig. 14.

Fig. 18 is a sectional view of the passive radiator enclosure of fig. 17 taken along the direction P7-P7.

Fig. 19 is a cross-sectional view of a second passive radiator acoustic enclosure according to an embodiment of the present application.

Fig. 20 is a cross-sectional view of a third passive radiator acoustic enclosure according to an embodiment of the present application.

Fig. 21 is a cross-sectional view of a fourth passive radiator acoustic enclosure according to an embodiment of the present application.

Fig. 22 is a cross-sectional view of a fifth passive radiator acoustic enclosure according to an embodiment of the present application.

Fig. 23 is a cross-sectional view of a sixth passive radiator acoustic enclosure according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without inventive step, are within the scope of the present application.

Referring to fig. 1-13, a passive radiator 20 is provided according to an embodiment of the present disclosure.

Referring to fig. 1, 8 and 11, the passive radiator 20 includes a vibration plate 22, a first folding ring 24 and a second folding ring 26. The passive radiators 20 enclose a hollow area 201. Wherein the vibration plate 22 is disposed in a manner of surrounding the hollow area 201 for a vibration motion. The first hinge ring 24 is connected to the diaphragm 22 on the side close to the hollow area 201, and supports the diaphragm 22 on the side close to the hollow area 201. The second flange 26 is connected to a side of the diaphragm 22 away from the hollow area 201 for supporting the side of the diaphragm 22 away from the hollow area 201.

It is understood that, referring to fig. 1-3 and 8-13, the opening direction of the first folding ring 24 is consistent with the opening direction of the second folding ring 26.

It can be understood that, referring to fig. 1-3 and 8-13, the first folding ring 24 is disposed on a side of the vibration plate 22 close to the hollow area 201, and the second folding ring 26 is disposed on a side of the vibration plate 22 away from the hollow area 201, such that the first folding ring 24 and the second folding ring 26 support the vibration plate 22 in a manner of surrounding the vibration plate 22, and balance and stability of the vibration plate 22 are maintained, such that the vibration plate 22 can maintain linear vibration under the action of large dynamic resonant air, and sound pressure distortion caused by non-linear vibration such as shaking or swinging is avoided. It should be noted that the linear vibration of the vibration plate 22 means that the vibration plate 22 performs a reciprocating motion along a vibration axis.

It is understood that referring to fig. 1-3 and 8-13, the vibrating plate 22 includes a weight 223, and the weight 223 is used to bear or adjust the vibrating mass of the vibrating plate 22, so as to enhance the low-frequency sound pressure and make the sound more loud.

It is understood that, referring to fig. 4 to 7, the vibration plate 22 further includes a vibration film 225 and a receiving chamber 227, the receiving chamber 227 is formed inside the vibration film 225, and the receiving chamber 227 is disposed in a manner of surrounding the hollow area 201; the negative weight 223 is disposed in the accommodation chamber 227; the inner wall of the accommodating chamber 227 is closely attached to the surface of the weight block 223 to prevent the sound pressure from being distorted due to the sliding of the weight block 223 with respect to the accommodating chamber 227.

It is understood that if the negative weight 223 moves relative to the receiving chamber 227, the vibration plate 22 is caused to vibrate nonlinearly, resulting in distortion of sound pressure. And the inner wall of the receiving chamber 227 is closely attached to the surface of the weight 223 to prevent the weight 223 from moving relative to the receiving chamber 227 by the large dynamic resonant air, so that the vibration plate 22 keeps linear vibration without distortion of sound pressure.

It will be appreciated that with continued reference to fig. 4-7, the side of negative weight 223 proximal to hollow region 201 is inner rim side 2232 and the side of negative weight 223 distal from hollow region 201 is outer rim side 2233; the inner edge side 2232 has a plurality of evenly distributed inner edge indentations 2234 and the outer edge side 2233 has a plurality of evenly distributed outer edge indentations 2235.

It is understood that the receiving chamber 227 includes a plurality of first protrusions 2273, the first protrusions 2273 correspond to the inner edge notches 2234 one by one, the first protrusions 2273 extend into and fill the inner edge notches 2234, and the first protrusions 2273 are used for limiting the inner edge notches 2234; the accommodating chamber 227 further includes a plurality of second protrusions 2275, the second protrusions 2275 correspond to the outer edge notches 2235 one by one, the second protrusions 2275 extend into and fill the outer edge notches 2235, and the second protrusions 2275 are used for limiting the outer edge notches 2235.

It is understood that the first protrusion 2273 is used to limit the inner edge notch 2234, and the second protrusion 2275 is used to limit the outer edge notch 2235, so as to prevent the inner edge notch 2234 from being displaced relative to the first protrusion 2273 and the outer edge notch 2235 from being displaced relative to the second protrusion 2275, thereby preventing the negative weight 223 from being moved relative to the receiving chamber 227 by the large dynamic resonant air, so that the vibration plate 22 keeps linear vibration without distortion of sound pressure.

It will also be appreciated that weight block 223 can be adjusted to a desired weight range by providing inner edge indentations 2234 and outer edge indentations 2235.

It can be understood that, with continued reference to fig. 4-7, the number of the plurality of inner edge notches 2234 is the same as the number of the plurality of outer edge notches 2235, the shape and size of the inner edge notches 2234 is the same as the shape and size of the outer edge notches 2235, and the plurality of inner edge notches 2234 and the plurality of outer edge notches 2235 are sequentially arranged in the order of the inner edge notches 2234, the outer edge notches 2235, the inner edge notches 2234, and the outer edge notches 2235 along the circumferential direction of the hollow region 201, so as to uniformly distribute the weight of the negative weight 223 and allow the diaphragm 225 to uniformly bear the weight of the negative weight 223, thereby maintaining the balance and stability of the diaphragm 225, and allowing the diaphragm 225 to maintain linear vibration under the action of the large dynamic resonant air.

It is understood that, referring to fig. 4-7, the hollow area 201 is a circular area; the vibrating plate 22 is a torus, and the vibrating membrane 225 is made of rubber; the weight 223 is a circular ring with an inner gap 2234 and an outer gap 2235. The negative weight 223 may be a metal material.

It is to be understood that, referring to fig. 1-3 and 11-18, the passive radiator 20 further includes a first inner edge portion 23 and a first outer edge portion 25. The first inner edge 23 is disposed on the side of the first folding ring 24 close to the hollow area 201, and the first inner edge 23 surrounds the first folding ring 24. The first outer edge 25 is disposed on the side of the second flange 26 away from the hollow area 201, and the first outer edge 25 surrounds the second flange 26.

It is to be understood that referring to fig. 1-10, the present embodiment provides a variety of structurally different passive radiators 20.

Referring to fig. 1 to 7, a passive radiator 20 of a first structure according to an embodiment of the present disclosure includes a vibrating plate 22. The diaphragm 22 includes a diaphragm 225 and a weight 223. A receiving chamber 227 is formed in the diaphragm 225. The negative weight 223 is disposed in the accommodation chamber 227.

Referring to fig. 8 to 10, a passive radiator 20 of a second structure according to an embodiment of the present application includes a vibrating plate 22. The diaphragm 22 includes a diaphragm 225 and a weight 223. The diaphragm 225 includes first and second oppositely disposed

side surfaces

2252, 2254. The direction of the second side 2254 toward the first side 2252 is the same direction as the opening direction of the first hinge 24. The negative weight 223 is adhered to the first side 2252.

Referring to fig. 11 to 13, a passive radiator 20 of a third structure according to an embodiment of the present disclosure includes a vibration plate 22. The diaphragm 22 includes a diaphragm 225 and a weight 223. The diaphragm 225 includes first and second oppositely disposed

side surfaces

2252, 2254. The direction of the second side 2254 toward the first side 2252 is the same direction as the opening direction of the first hinge 24. The negative weight 223 is adhered to the second side 2254.

Referring to fig. 14-23, the present embodiment further provides a passive radiator sound box 10. The passive radiator enclosure 10 includes a passive radiator 20. The passive radiator 20 is a passive sound generating unit that can be used to adjust bass. The overall timbre of the passive radiator enclosure 10 can be adjusted by the passive radiator 20. The weight 223 is used to improve the resonance of the passive radiator sound box 10, and reduce the acceleration generated by the passive radiator sound box 10 during operation, so that the risk of vibration can be effectively reduced when the passive radiator sound box 10 is assembled as a component in a television or a notebook computer. It is to be understood that referring to fig. 15, 16, and 18-23, the passive radiator acoustic enclosure 10 further includes a sound-emitting body 40 and a support 60. The sound producing body 40 is configured to convert electrical energy into acoustic energy. It will be appreciated that the sound producing body 40 is energized to convert electrical energy to mechanical energy and then to convert mechanical energy to acoustic energy. The passive radiator 20 is disposed on the support 60. The bracket 60 serves to fix the passive radiator 20 and prevent the passive radiator 20 from collapsing. The bracket 60 encloses to form a first accommodating space 62, and the sounding main body 40 is arranged in the first accommodating space 62; the supporter 60 serves to support the sounding body 40 and the passive radiator 20. The sounding body 40 is located on the side of the passive radiator 20 facing the first direction H1.

It is understood that the sounding body 40 includes a drum paper 402, a damper 404, a voice coil 406, an iron piece 408, a first magnet 403, a second magnet 405, and a U-iron 407, which are sequentially disposed along a common central axis. The first inner edge portion 23 is connected to the second opening end 4024, and the first inner edge portion 23 is used for supporting the second opening end 4024 so that the drum paper 402 can be supported. In some embodiments, the stand 60 and the sound emitting body 40 are configured to be disposed along a central axis. It should be noted that, for the purpose of convenience of description, the direction of the passive radiator 20 toward the first accommodation space 62 is defined as a first direction H1. A direction opposite to the direction of the passive radiator 20 toward the first accommodation space 62 is defined as a second direction H2.

It is understood that, in some embodiments, referring to fig. 19, 21 and 23, the opening direction of the first folding ring 24 and the second folding ring 26 is towards the first direction H1. In other embodiments, referring to fig. 18, 20 and 22, the opening directions of the first folding ring 24 and the second folding ring 26 face the second direction H2.

It is to be understood that, referring to fig. 15, 16 and 18-23, the sound-producing body 40 includes a drum paper 402. The drum paper 402, which may also be referred to as a vibrating plate, cone, has a decisive influence on the performance and sound quality of the passive radiator enclosure 10. The drum paper 402 includes a first open end 4022 and a second open end 4024 that are disposed in opposing spaced relation. The central axis of the first open end 4022 and the central axis of the second open end 4024 are collinear with the central axis of the first inner edge 23. The aperture of the first open end 4022 is larger than the aperture of the second open end 4024. The first open end 4022 is connected to the first inner edge 23. The second open end 4024 is located on the side of the first open end 4022 facing the first direction H1; the first outer edge portion 25 is connected to the bracket 60.

It will be appreciated that, referring to fig. 15, 16 and 18-23, the sound body 40 further includes a voice coil 406. The voice coil 406 is electrically conductive and generates motion within the magnetic field, thereby causing the drum paper 402 to vibrate. The voice coil 406 includes a third open end 4062 and a fourth open end 4064 that are opposed and spaced apart. The central axis of the third open end 4062 and the central axis of the fourth open end 4064 are collinear with the central axis of the first inner edge portion 23. The third open end 4062 is disposed in a manner of being inserted into the second open end 4024, the third open end 4062 is located between the first open end 4022 and the second open end 4024, and the second open end 4024 is connected to the outer wall of the voice coil 406; the fourth opening end 4064 is located on the side of the third opening end 4062 facing the first direction H1.

It is understood that, referring to fig. 15, 16 and 18-23, the sounding body 40 further includes a damper. The damper is disposed around the voice coil 406. The damper is located on the side of the second open end 4024 facing the first direction H1. The bounce is also located on the opposite side of the fourth opening end 4064 from the first direction H1. The sabot includes a sabot body 4042, a second inner edge portion 4044 and a second outer edge portion 4046. The damper body 4042 is an annular sheet body with a wavy end surface, and the second inner edge portion 4044 is located on the side of the damper body 4042 close to the voice coil 406 and connected to the outer wall of the voice coil 406. The second outer edge portion 4046 is disposed around the voice coil 406 on a side of the damper body 4042 away from the voice coil 406. The damper body 4042, the center axis of the second inner edge portion 4044, and the center axis of the second outer edge portion 4046 are collinear with the center axis of the first inner edge portion 23.

The damper 404 may also be referred to as a spider, which has a braking action and a center-retaining action. The outer edge of the damper 404 is bonded to the bracket 60, and the neck of the damper 404 is bonded to the voice coil 406 and the neck of the drum paper 402, so that the voice coil 406 does not get magnetized to the iron piece 408 and the first and

second magnets

403 and 405 when moving in the magnetic gap, and the voice coil 406 and the drum paper 402 are properly connected and held in the center, which is also called a center holder. The behavior of the damper 404 is similar to the flanges of the drum paper 402, affecting the bass resonance F0, and having a moderate elastic assist effect on the connections to the drum paper 402, and controlling the operation of the drum paper 402 in the direction of the mold.

It will be appreciated that the sounding body 40 of fig. 15, 16 and 18-23 further includes an iron plate 408. The iron sheet 408 is disposed in a second receiving space 4066 surrounded by the voice coil 406; the center axis of the iron piece 408 is collinear with the center axis of the first inner edge portion 23.

The iron plate 408 may also be referred to as an iron plate, washer, or top plate. In the magnetic circuit, the iron piece 408 plays a role of magnetic conduction, and the N pole and the S pole of the first magnet 403 and the second magnet 405 can be concentrated to the gap through the circuit, so that the gap generates a strong magnetic field, and the scroll of the voice coil 406 is just right in the gap, so the inner diameter and the thickness of the iron piece 408 are very important. The iron tabs 408 may be riveted to their joints and reinforced with glue to prevent the air flow from extruding out of the gaps between the rivets during operation of the passive radiator enclosure 10, which may result in poor sound of the air flow, i.e., air leakage.

It will be appreciated that, referring to fig. 15, 16 and 18-23, the sound generating body 40 further includes a first magnet 403. The first magnet 403 is disposed in the second receiving space 4066. The first magnet 403 is located on the side of the iron piece 408 facing the first direction H1. The iron piece 408 is laminated with the first magnet 403. The central axis of the first magnet 403 is collinear with the central axis of the first inner edge 23.

It will be appreciated that, referring to fig. 15, 16 and 18-23, the sound producing body 40 also includes a second magnet 405. A portion of the second magnet 405 is located in the second receiving space 4066. Another portion of the second magnet 405 is located outside the second receiving space 4066. The second magnet 405 is located on the side of the first magnet 403 facing the first direction H1. The second magnet 405 and the first magnet 403 are stacked. The central axis of the second magnet 405 is collinear with the central axis of the first inner edge 23.

The first magnet 403 and the second magnet 405 are used to generate a magnetic field, and the voice coil 406 is placed in the magnetic field, when an audio current passes through the voice coil 406, the current is subjected to the force of the magnetic field, so that the voice coil 406 vibrates, and the drum paper 402 adhered to the voice coil 406 is driven to vibrate and make a sound.

It is understood that, referring to fig. 15, 16 and 18-23, the sound producing body 40 further includes a U-iron 407. The U-iron 407 is connected to the bracket 60. The U-iron 407 includes a bottom wall 4072 and side walls 4074. The bottom wall 4072 and the side wall 4074 enclose a third receiving space 4076. The voice coil 406 is disposed in such a manner that the fourth opening end 4064 is inserted into the third receiving space 4076. The second magnet 405 is connected to the bottom wall 4072 on the side away from the first magnet 403. The central axis of the U-iron 407 is collinear with the central axis of the first inner rim portion 23.

The U-iron 407 may also be referred to as electrical iron, which is pure iron in texture and is a component of an acoustical unit. The main role of the U-iron 407 is to be magnetically conductive in the energized state, but it has no remanence. When the passive radiator enclosure 10 is powered down, the magnetic field disappears, and its magnetism disappears immediately. Therefore, the purity of the U-iron directly affects the efficiency of the operation of the acoustic unit and some important parameters of the well linearity distortion. Associated with the clevis is a clamp plate, both of which together are components of the sound unit. While the thickness of the clamping plate directly affects the stroke of the sound unit, for a long stroke unit, the U-shaped iron and the clamping plate are very thick, and the U-shaped iron and the clamping plate can basically enable the whole stroke of the voice coil to perform cutting magnetic induction line movement. The smaller the gap between the clamping plate and the clevis, the less power is required for voice coil movement and the more efficient the sound unit.

It is to be understood that referring to fig. 15, 16, and 18-23, the passive radiator enclosure 10 further includes a housing 50. The housing 50 encloses a fourth accommodating space 56. The holder 60 and the sounding body 40 are disposed in the fourth accommodating space 56. It will be appreciated that the housing 50 includes a first housing 52 and a second housing 54 that are connected to one another. The first housing 52 and the second housing 54 may be attached by screw locking. The first housing 52 may also be referred to as a lower housing, and the second housing 54 may also be referred to as an upper housing. The first housing 52 and the second housing 54 may be sealed by ultrasonic welding, a process of locking screws. The first enclosure 52 and the second enclosure 54 are provided to prevent an acoustic short circuit, to prevent the back sound from canceling or interfering with the front sound, and to suppress the resonance of the passive radiator enclosure 10.

It is to be understood that referring to fig. 18-23, the present embodiment provides a passive radiator enclosure 10 having various configurations.

Referring to fig. 18, the passive radiator sound box 10 of the first structure according to the present embodiment includes the passive radiator 20 of the first structure shown in fig. 1-3, and the opening direction of the first folded loop 24 and the opening direction of the second folded loop 26 are directed toward the first direction H2.

Referring to fig. 19, a passive radiator sound box 10 of a second structure according to an embodiment of the present invention includes the passive radiator 20 of the first structure shown in fig. 1-3, and an opening direction of the first folded loop 24 and an opening direction of the second folded loop 26 are directed toward a first direction H1.

Referring to fig. 20, the passive radiator acoustic enclosure 10 of the third structure according to the present embodiment includes the passive radiator 20 of the second structure shown in fig. 8-10, and the opening direction of the first folded loop 24 and the opening direction of the second folded loop 26 face the second direction H2.

Referring to fig. 21, the passive radiator acoustic enclosure 10 of the fourth structure according to the present embodiment includes the passive radiator 20 of the second structure shown in fig. 8-10, and the opening direction of the first folded loop 24 and the opening direction of the second folded loop 26 are directed toward the first direction H1.

Referring to fig. 22, a passive radiator sound box 10 of a fifth structure according to the present invention includes the passive radiator 20 of the third structure shown in fig. 11-13, and an opening direction of the first folded loop 24 and an opening direction of the second folded loop 26 face the second direction H2.

Referring to fig. 23, a passive radiator sound box 10 of a sixth structure according to the present invention includes the passive radiator 20 of the third structure shown in fig. 11-13, and an opening direction of the first folded loop 24 and an opening direction of the second folded loop 26 face the first direction H1.

Referring to fig. 14-23, the passive radiator acoustic enclosure 10 further includes a connection terminal 30 and an electrical wire 80. The wire 80 is used to connect the speaker and the power amplifier output terminal. The terminal 30 is used to transmit an external signal to the wire and then to the voice coil 406, so that the coil receives current.

Referring to fig. 14-23, the passive radiator sound box 10 further includes an accessory 70, where the accessory 70 includes a dust cap 702, a first decorative ring 704, a second decorative ring 706, and a rubber pad 708. A dust cap 702 for preventing dust particles from entering the voice coil 406, and preventing the dust particles from entering the voice coil 406 and affecting the normal operation of the voice coil 406 and the passive radiator speaker 10; it also serves to suppress the divided vibration of the passive radiator acoustic enclosure 10. The first decorative ring 704 and the second decorative ring 706 are decorative rings designed for aesthetic appearance, and the material of the decorative rings can be anodized aluminum CD patterns, PP material and the like. A first decorative ring 704 is adhered to the junction of the drum paper 402 and the passive radiator 20. The second bezel 706 is bonded to the diaphragm 22 of the passive radiator 20. The rubber pad 708 is used to reduce the acceleration of the sound box, and plays a role in buffering and suppressing the vibration sound. The rubber pad 708 may be made of silicone rubber or rubber.

The passive radiator and the sound box provided by the embodiment of the present application are introduced in detail above, and a specific example is applied in the description to explain the principle and the embodiment of the present application, and the description of the above embodiment is only used to help understanding the method and the core idea of the present application; meanwhile, for those skilled in the art, according to the idea of the present application, the specific implementation manner and the application scope may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A passive radiator is characterized in that the passive radiator encloses to form a hollow area; the passive radiator includes:

and the second folding ring is connected with one side of the vibration plate, which is far away from the hollow area, and is used for supporting one side of the vibration plate, which is far away from the hollow area.

2. The passive radiator of claim 1, wherein the opening direction of the first corrugated rim coincides with the opening direction of the second corrugated rim.

3. The passive radiator of claim 2, wherein the diaphragm includes a negative mass to bear or adjust a vibrational mass of the diaphragm to enhance low frequency sound pressure.

4. The passive radiator according to claim 3, wherein the vibration plate further includes a vibration film and a receiving chamber formed inside the vibration film, the receiving chamber being provided in a manner to surround the hollow area; the weight block is arranged in the accommodating cavity; the inner wall of the containing cavity is tightly attached to the surface of the weight block, so that the sound pressure is prevented from being distorted due to the fact that the weight block slides relative to the containing cavity.

5. The passive radiator of claim 4, wherein a side of the negative weight close to the hollow region is an inner edge side, and a side of the negative weight away from the hollow region is an outer edge side; the inner edge side is provided with a plurality of uniformly distributed inner edge gaps, and the outer edge side is provided with a plurality of uniformly distributed outer edge gaps;

the accommodating chamber comprises a plurality of first protruding parts, the first protruding parts correspond to the inner edge notches one to one, the first protruding parts extend into and fill the inner edge notches, and the first protruding parts are used for limiting the inner edge notches; the containing cavity further comprises a plurality of second protruding parts, the second protruding parts correspond to the outer edge notches one to one, the second protruding parts extend into and fill the outer edge notches, and the second protruding parts are used for limiting the outer edge notches.

6. The passive radiator of claim 5, wherein the number of the inner edge notches is the same as the number of the outer edge notches, the shape and size of the inner edge notches are the same as the shape and size of the outer edge notches, and the inner edge notches, that is, the outer edge notches are sequentially arranged along the circumferential direction of the hollow region in the order of the inner edge notches, the outer edge notches, the inner edge notches, and the outer edge notches, so as to uniformly distribute the weight of the negative weight, so that the diaphragm uniformly bears the weight of the negative weight, thereby maintaining the balance and stability of the diaphragm, and enabling the diaphragm to maintain linear vibration under the action of large dynamic resonance air.

7. The passive radiator of claim 6, wherein the hollow region is a circular region; the vibrating plate is a circular ring body, and the vibrating membrane is made of rubber; the negative weight block is a ring body provided with the inner edge gap and the outer edge gap, and is made of metal.

8. The passive radiator of claim 2, wherein the vibration plate includes a vibration mode and a weight; the vibrating die comprises a first side surface and a second side surface which are arranged oppositely; the direction of the second side surface facing the first side surface is the same direction as the opening direction of the first folding ring; the negative weight is adhered to the first side surface or the negative weight is adhered to the second side surface.

9. A passive radiator as claimed in any one of claims 2 to 8, further comprising:

the first inner edge part is arranged on one side, close to the hollow area, of the first folding ring and surrounds the first folding ring; and

the first outer edge portion is arranged on one side, away from the hollow area, of the second folding ring, and the first outer edge portion surrounds the second folding ring.

10. A passive radiator loudspeaker enclosure comprising:

the passive radiator of claim 9.

11. The passive radiator enclosure of claim 10, further comprising:

a sound-producing body configured to convert electrical energy into acoustic energy;

the passive radiator is arranged on the bracket; the support encloses to form a first accommodating space, and the sounding main body is arranged in the first accommodating space; the bracket is used for supporting the sounding main body and the passive radiator;

the sounding main body is located on one side of the passive radiator facing a first direction, and the first direction is a direction in which the passive radiator faces the first accommodating space.

12. The passive radiator acoustic enclosure of claim 11, wherein the opening direction of the first corrugated rim and the opening direction of the second corrugated rim are directed in a first direction; or

The opening direction of the first folding ring and the opening direction of the second folding ring face to a second direction; the second direction is opposite to the first direction.

13. The passive radiator acoustic enclosure of claim 12, wherein the sound body comprises drum paper, the drum paper including first and second open ends disposed in opposing spaced relation; a central axis of the first open end, a central axis of the second open end, and a central axis of the first inner rim portion are collinear; the caliber of the first opening end is larger than that of the second opening end; the first open end is connected with the first inner edge portion; the second opening end is positioned at one side of the first opening end facing to the first direction; the first outer edge portion is connected to the bracket.

14. The passive radiator acoustic enclosure of claim 13, wherein the sound body further comprises a voice coil; the voice coil comprises a third opening end and a fourth opening end which are opposite and arranged at intervals; a central axis of the third open end, a central axis of the fourth open end and a central axis of the first inner edge portion are collinear; the third opening end is arranged in a mode of being inserted into the second opening end, the third opening end is positioned between the first opening end and the second opening end, and the second opening end is connected with the outer wall of the voice coil; the fourth opening end is positioned at one side of the third opening end facing to the first direction.

15. The passive radiator acoustic enclosure of claim 14, wherein the sound-emitting body further comprises an acoustic wave; the elastic wave is arranged around the voice coil; the elastic wave is positioned at one side of the second opening end facing to the first direction; the elastic wave is also positioned at one side of the fourth opening end facing to the reverse direction of the first direction; the bullet ripples includes:

the elastic wave body is an annular sheet body with a wavy end surface;

a second inner edge portion located on a side of the damper body close to the voice coil and connected to an outer wall of the voice coil, an

The second outer edge part is arranged around the voice coil and is positioned on one side, far away from the voice coil, of the damper body;

the central axis of the second inner edge portion and the central axis of the second outer edge portion are collinear with the central axis of the first inner edge portion.

16. The passive radiator acoustic enclosure of claim 15, wherein the sound-generating body further comprises an iron sheet; the iron sheet is arranged in a second accommodating space formed by enclosing the voice coil; the central axis of the iron piece is collinear with the central axis of the first inner edge portion.

17. The passive radiator acoustic enclosure of claim 16, wherein the sound-generating body further comprises a first magnet; the first magnet is arranged in the second accommodating space; the first magnet is positioned on one side of the iron sheet facing to the first direction, and the iron sheet and the first magnet are stacked; the central axis of the first magnet is collinear with the central axis of the first inner edge portion.

18. The passive radiator acoustic enclosure of claim 17, wherein the sound-generating body further comprises a second magnet; one part of the second magnet is positioned in the second accommodating space, and the other part of the second magnet is positioned outside the second accommodating space; the second magnet is positioned on one side of the first magnet facing the first direction, and the second magnet and the first magnet are stacked; the central axis of the second magnet is collinear with the central axis of the first inner edge portion.

19. The passive radiator acoustic enclosure of claim 18, wherein the sound body further comprises a U-iron, the U-iron being connected to the bracket; the U-shaped iron comprises a bottom wall and a side wall; the bottom wall and the side wall enclose to form a third accommodating space; the voice coil is arranged in a mode that the fourth opening end is inserted into the third accommodating space, and one side, far away from the first magnet, of the second magnet is connected with the bottom wall; the central axis of the U-iron is collinear with the central axis of the first inner rim portion.

20. The passive radiator acoustic enclosure of any one of claims 11-19, further comprising a housing, the housing enclosing a fourth receiving space, the support and the sound emitting body being disposed in the fourth receiving space.