阅读说明：本技术 被动辐射器和发声设备 (Passive radiator and sound generating apparatus ) 是由 李震 吴琼 于 2021-10-19 设计创作，主要内容包括：本发明公开一种被动辐射器和发声设备,所述被动辐射器包括框架、振膜、折环及阻尼组件,所述框架形成有开口；所述振膜设于所述开口内；所述折环的内侧连接所述振膜,外侧连接所述开口边沿；所述阻尼组件包括相连接的第一阻尼件和第二阻尼件,所述第一阻尼件设于所述振膜的表面,所述第二阻尼件设于所述折环的表面,所述第一阻尼件于所述振膜的表面呈中心对称设置,所述第一阻尼件为弹性材料,所述第二阻尼件为柔性材料。本发明的被动辐射器可提高低频振动频率,增加辐射量的同时不出现失真现象。(The invention discloses a passive radiator and sound production equipment, wherein the passive radiator comprises a frame, a vibrating diaphragm, a folding ring and a damping component, and the frame is provided with an opening; the vibrating diaphragm is arranged in the opening; the inner side of the folding ring is connected with the vibrating diaphragm, and the outer side of the folding ring is connected with the opening edge; the damping assembly comprises a first damping part and a second damping part which are connected, the first damping part is arranged on the surface of the vibrating diaphragm, the second damping part is arranged on the surface of the folding ring, the first damping part is arranged on the surface of the vibrating diaphragm in a centrosymmetric mode, the first damping part is made of elastic materials, and the second damping part is made of flexible materials. The passive radiator can improve the low-frequency vibration frequency, increase the radiation quantity and simultaneously avoid the distortion phenomenon.)

1. A passive radiator, characterized in that the passive radiator comprises:

a frame formed with an opening;

the vibrating diaphragm is arranged in the opening;

the inner side of the folding ring is connected with the vibrating diaphragm, and the outer side of the folding ring is connected with the opening edge; and

the damping assembly comprises a first damping part and a second damping part which are connected, the first damping part is arranged on the surface of the vibrating diaphragm, the second damping part is arranged on the surface of the folding ring, the first damping part is arranged on the surface of the vibrating diaphragm in a central symmetry mode, the first damping part is made of elastic materials, and the second damping part is made of flexible materials.

2. The passive radiator of claim 1, wherein the first damping member is disposed on an inner surface of the diaphragm, and the second damping member is disposed on an inner surface of the corrugated rim.

3. The passive radiator of claim 1, wherein the first damping member is planar and is attached to the surface of the diaphragm;

and/or the second damping piece is in a curved surface shape and is attached to the surface of the folded ring.

4. The passive radiator as claimed in claim 1, wherein the frame has a rectangular shape, the first damping member has an x-shaped plate shape, and four ends of the first damping member are connected to four sides or four corners of the frame through the second damping member, respectively.

5. The passive radiator of claim 4, wherein there are four of said second damping members, four of said second damping members being connected to four ends of said first damping member, respectively.

6. A passive radiator as claimed in claim 4 or 5, wherein the inner surface of the frame is provided with a third damping member connected to the second damping member at an end remote from the first damping member, the third damping member being of a rigid material and having a first predetermined hardness value.

7. The passive radiator of claim 6, wherein the frame has at least two fixed portions at a periphery thereof, each fixed portion having a fourth damping member attached to an inner surface thereof at an end thereof remote from the first damping member, the third damping member being of a rigid material and having a second predetermined hardness value.

8. The passive radiator of claim 7, further comprising a support frame erected on an inner side of the frame and forming a vibration space with the diaphragm, wherein a periphery of the support frame is connected to the fourth damping member and/or the third damping member.

9. The passive radiator of claim 8, wherein the support frame includes a support base and a connection portion extending from a periphery of the support base in a bent manner, the connection portion being connected to the fourth damping member, the support base having a cross shape;

and/or the support frame is made of rigid material and has a third preset hardness value.

10. A sound generating device comprising a loudspeaker and a passive radiator as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of sounding device structures, in particular to a passive radiator and sounding equipment.

Background

The passive radiator is commonly called a false horn, does not contain a driving system, but depends on the active loudspeaker to work, and is driven to convert the heat energy and the kinetic energy generated by the compressed air of the active loudspeaker due to vibration in the process of sound-electricity transduction into sound signals. Generally, a passive radiator consists of a vibrating diaphragm, a folding ring and a structural member, and in order to improve the radiation low-frequency effect of the passive radiator, the conventional structure only adds a balancing weight on the vibrating diaphragm, so that the low-frequency resonance frequency can be reduced, but the vibrating diaphragm is too heavy and difficult to push, and the sensitivity is reduced; in other structures, the compliance is improved by changing the material of the corrugated rim, so that the corrugated rim is easy to deform, but the phenomena of diaphragm inclination, overturning, distortion and the like are easy to generate, and the effect of improving the low frequency is not good.

Disclosure of Invention

The invention mainly aims to provide a passive radiator, which increases the mass of a vibrating diaphragm through a first damping part, reduces the low-frequency resonance frequency, enables the vibrating diaphragm to be easily pushed by combining with high compliance of a corrugated rim material, eliminates the condition of easy overturning distortion of the vibrating diaphragm caused by the change of the compliance of the corrugated rim by combining with a second damping part, and aims to reduce the low-frequency resonance frequency and simultaneously enable the vibrating diaphragm not to be distorted.

To achieve the above object, the present invention provides a passive radiator, including:

a frame formed with an opening;

the vibrating diaphragm is arranged in the opening;

the inner side of the folding ring is connected with the vibrating diaphragm, and the outer side of the folding ring is connected with the opening edge; and

the damping assembly comprises a first damping part and a second damping part which are connected, the first damping part is arranged on the surface of the vibrating diaphragm, the second damping part is arranged on the surface of the folding ring, the first damping part is arranged on the surface of the vibrating diaphragm in a central symmetry mode, the first damping part is made of elastic materials, and the second damping part is made of flexible materials.

In an embodiment, the first damping member is disposed on an inner surface of the diaphragm, and the second damping member is disposed on an inner surface of the edge.

In one embodiment, the first damping member is planar and attached to the surface of the diaphragm;

and/or the second damping piece is in a curved surface shape and is attached to the surface of the folded ring.

In one embodiment, the frame has a rectangular shape, the first damping member has an x-shaped plate shape, and four ends of the first damping member are connected to four sides or four corners of the frame through the second damping member, respectively.

In one embodiment, the number of the second damping members is four, and four damping members are respectively connected to four ends of the first damping member.

In an embodiment, the inner surface of the frame is provided with a third damping member, the third damping member is connected to one end of the second damping member far away from the first damping member, and the third damping member is made of a rigid material and has a first preset hardness value.

In an embodiment, the periphery of the frame is provided with at least two fixing portions, the inner surface of each fixing portion is provided with a fourth damping member, the fourth damping member is connected to one end, away from the first damping member, of the third damping member, and the third damping member is made of a rigid material and has a second preset hardness value.

In an embodiment, the passive radiator further includes a support frame, the support frame is mounted on an inner side of the frame, a vibration space is formed between the support frame and the diaphragm, and a periphery of the support frame is connected to the fourth damping member and/or the third damping member.

In one embodiment, the supporting frame comprises a supporting bottom and a connecting part bent and extended from the periphery of the supporting bottom, the connecting part is connected to the fourth damping part, and the supporting bottom is cross-shaped;

and/or the support frame is made of rigid material and has a third preset hardness value.

The invention also provides a sound generating device, which comprises a loudspeaker and a passive radiator, wherein the passive radiator is the passive radiator.

The passive radiator in the technical scheme of the invention comprises a frame, a vibrating diaphragm and a folding ring for connecting the vibrating diaphragm and the frame, wherein the surface of the vibrating diaphragm is provided with the first damping part, so that the quality of mechanical vibration can be increased, and the low-frequency resonance frequency of the passive radiator is reduced. Simultaneously, the higher material of compliance will be designed to the edge, avoids leading to the vibrating diaphragm can't promote original air quality and lead to the reduction of loudness and low frequency volume because of the quality increases. The damping piece is made of flexible materials, so that the compliance of the folded ring can be guaranteed not to be damaged, the first damping piece is made of elastic materials, the vibration recovery is fast, the stability of the second damping piece is guaranteed through the first damping piece, the vibrating diaphragm and the folded ring are guaranteed to vibrate along the axis direction of the vibrating diaphragm, eccentric motion does not occur, distortion risks are effectively reduced, and the stability of a passive radiator is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a passive radiator according to an embodiment of the present invention;

fig. 2 is a schematic structural view of the passive radiator shown in fig. 1 from another view angle;

fig. 3 is a schematic structural view of the passive radiator shown in fig. 1 from another view angle;

fig. 4 is a cross-sectional view of the passive radiator shown in fig. 1.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				100	Passive radiator	61	Support bottom
10	Frame structure	63	Connecting part
				20	Fixing part	70	Damping assembly
21	Mounting hole	71	First damping member
				30	Vibrating diaphragm	73	Second damping member
50	Folding ring	75	Third damping member
				60	Supporting frame	77	Fourth damping member

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

Also, the meaning of "and/or" and/or "appearing throughout is meant to encompass three scenarios, exemplified by" A and/or B "including scenario A, or scenario B, or scenarios where both A and B are satisfied.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

The present invention provides a passive radiator 100.

Referring to fig. 1 and fig. 2, in an embodiment of the present invention, the passive radiator 100 includes a frame 10, a diaphragm 30, a corrugated rim 50, and a damping component 70, wherein the frame 10 is formed with an opening; the diaphragm 30 is arranged in the opening; the inner side of the corrugated rim 50 is connected with the vibrating diaphragm 30, and the outer side is connected with the opening edge; the damping assembly 70 includes a first damping member 71 and a second damping member 73 connected to each other, the first damping member 71 is disposed on the surface of the diaphragm 30, the second damping member 73 is disposed on the surface of the edge 50, the first damping member 71 is disposed on the surface of the diaphragm 30 in a central symmetry manner, the first damping member 71 is made of an elastic material, and the second damping member 73 is made of a flexible material.

In this embodiment, the passive radiator 100 is applied to a sound generating device, which is an important component of low-frequency sound effect in the sound generating device, and includes a frame 10, a diaphragm 30 and a corrugated rim 50, similar to a vibration system of a speaker, but without a magnetic circuit system, and is forced to vibrate and generate sound by the vibration of the speaker. The frame 10 serves as a mounting base for mounting and fixing the diaphragm 30, and the material of the frame may be metal, rigid plastic, etc., so as to have a better supporting effect. The frame 10 has a through opening at a middle portion thereof for accommodating the diaphragm 30, so that the frame 10 has a substantially annular shape, such as a circular ring shape, a square ring shape, or other polygonal ring shape or irregular ring shape. The diaphragm 30 is disposed in the opening, and the shape of the diaphragm is matched with that of the frame 10, so that the diaphragm has a high space utilization rate and a good vibration effect. For example, when the frame 10 has a rectangular ring shape, the diaphragm 30 is also rectangular in shape. Similarly, when the diaphragm 30 has the same shape as the frame 10, the shape of the edge 50 connecting the two is also the same as the above two.

Here, the connection of the edge 50 to the frame 10 may be an adhesive, for example, the outer edge of the edge 50 may overlap the upper surface of the frame 10 or be connected to the inner side surface of the frame 10, which is not limited herein. The edge 50 and the diaphragm 30 can be integrally formed, so that the processing is convenient, the structural stability is good, and the conditions such as fracture are not easy to occur. The material of the diaphragm 30 and the corrugated rim 50 is an elastic material, such as plastic or rubber, so that the diaphragm is more easily vibrated and is more easily restored. The diaphragm 30 is provided with a first damping member 71, and the first damping member 71 is made of an elastic material, such as rubber or silica gel, which has a relatively high density and increases the overall mass of the diaphragm 30. The first damping member 71 may be a plane, a curved surface, a block, or a strip, and is not limited herein, and only needs to be disposed symmetrically with respect to the center of the diaphragm 30 as a center, that is, the first damping member 71 uses the center of the diaphragm 30 as an origin, and coincides with the original shape after rotating 180 degrees, so that the diaphragm 30 does not vibrate in the direction deviating from the axis thereof, that is, the distortion condition of turning to one side does not occur, and the sound production effect is improved. The connection mode of the first damping member 71 and the diaphragm 30 is not limited, and may be bonding or the like.

On the basis of the structure provided with the first damping part 71, compared with the structure without the first damping part 71, the material of the folded ring 50 with higher compliance is selected, the material can be set by changing the proportion of each component of the rubber, and the specific proportion is not detailed, and is not the invention point of the invention. Meanwhile, the surface of the corrugated rim 50 is provided with a second damping member 73, the second damping member 73 is connected with the first damping member 71, and the second damping member 73 is made of a flexible material, so that the compliance of the corrugated rim 50 is not affected, and the corrugated rim 50 and the diaphragm 30 are ensured to vibrate along the axial direction thereof, which is a centering effect on the diaphragm 30 and the corrugated rim 50. For example, the second damping member 73 is made of rubber, silica gel, or the like having better flexibility.

The passive radiator 100 of the technical scheme of the invention comprises a frame 10, a vibrating diaphragm 30 and a folding ring 50 connecting the vibrating diaphragm 30 and the frame 10, wherein the surface of the vibrating diaphragm 30 is provided with the first damping part 71, so that the mass of mechanical vibration can be increased, and the low-frequency resonance frequency of the passive radiator 100 is reduced. Meanwhile, the material of the folding ring 50 is selected to be a material with higher compliance, so that the reduction of loudness and low frequency caused by the fact that the diaphragm 30 cannot push the original air quality due to the increase of the quality is avoided. In combination, the folded ring 50 is also provided with a second damping member 73, the second damping member 73 is connected with the first damping member 71, and the second damping member 73 is made of a flexible material, so that the compliance of the folded ring 50 is not damaged, the first damping member 71 is made of an elastic material, and the stability of the second damping member 73 is ensured by the first damping member 71, so that the vibrating diaphragm 30 and the folded ring 50 do not move eccentrically in a reciprocating manner along the axial direction of the vibrating diaphragm and the folded ring 50, the distortion risk is effectively reduced, and the stability of the passive radiator 100 is improved.

With reference to fig. 2, in an embodiment, the first damping member 71 is disposed on an inner surface of the diaphragm 30, and the second damping member 73 is disposed on an inner surface of the edge 50.

In this embodiment, in order to improve the appearance of the passive radiator 100, the first damping member 71 is disposed on the inner surface of the diaphragm 30, and the corrugated rim 50 is protruded toward the outer surface of the diaphragm 30, so that the second damping member 73 connected to the first damping member 71 is also disposed on the inner surface of the corrugated rim 50, thereby improving the low-frequency resonant frequency of the passive radiator 100 and simultaneously providing a better aesthetic appearance.

In one embodiment, the first damping member 71 is planar and attached to the surface of the diaphragm 30;

and/or the second damping member 73 is curved and attached to the surface of the edge 50.

In this embodiment, in order to realize a better low-frequency effect, because of the vibrating diaphragm 30 is generally planar, the first damping member 71 is configured to be planar, and is attached to the surface of the vibrating diaphragm 30, so that the vibrating diaphragm 30 has a good attaching effect, and the two are combined more closely, so that low-frequency resonance occurs more easily, and the low-frequency performance of the vibrating diaphragm is improved.

Similarly, because the edge 50 is curved, the second damping member 73 is also curved and attached to the surface of the edge 50, so that the integrity of the edge 50 is stronger, and the edge 50 is prevented from being affected by vertical vibration as much as possible while providing a centering effect.

Referring to fig. 2 and 3, in an embodiment, the frame 10 is rectangular, the first damping member 71 is in an x-shape plate shape, and four ends of the first damping member 71 are respectively connected to four sides or four corners of the frame 10 through the second damping members 73.

In this embodiment, the shape of frame 10 is the rectangle, also the rectangle is cyclic annular, and carries out the chamfer setting in the four corners of rectangle to form the excessive structure of glossy arc, promote passive radiator 100's outward appearance, and reduce sharp-pointed edges and corners and with promotion safety performance. The first damping part 71 is in an X shape and is in a plate shape, and can be attached to the surface of the vibrating diaphragm 30, so that the first damping part 71 has better integrity, the mass of the first damping part 71 can be well controlled, and the vibrating diaphragm 30 is prevented from being overweight when the low-frequency resonance frequency is reduced; and can keep better equilibrium, prevent that vibrating diaphragm 30 from taking place the upset, avoid appearing the distortion phenomenon.

Here, alternatively, the first damping member 71 may have a cross shape crossing perpendicularly and four ends are connected to four sides of the frame 10 by the second damping members 73, or the first damping member 71 may have x crossing non-perpendicularly and four ends are connected to four corners of the frame 10 by the second damping members 73.

Of course, in other embodiments, the first damping member 71 may be configured to have a ring shape in the middle, and four branches are connected to the outer circumference of the ring shape, where the area of the ring portion needs to be controlled in a smaller range to improve the centering effect.

Referring to fig. 3, in an embodiment, there are four second damping members 73, and four second damping members 73 are respectively connected to four ends of the first damping member 71.

In this embodiment, the number of the second damping members 73 is four, and the four second damping members 73 are respectively connected to the four ends of the first damping member 71, so that the material usage of the second damping members 73 can be reduced while the axial reciprocating motion of the edge ring 50 along the vibrating diaphragm 30 is ensured, and the compliance of the edge ring 50 is prevented from being damaged, so that the weight of the edge ring is increased by matching with the weight of the first damping member 71, and the overall compliance of the passive radiator 100 is not affected while the low-frequency performance is improved.

Optionally, the width of the second damping member 73 in the circumferential direction of the edge 50 is the same as the width of the first damping member 71, so that the manufacturing is convenient, and the material utilization rate can be improved.

Referring to fig. 3 again, in an embodiment, the inner surface of the frame 10 is provided with a third damping member 75, the third damping member 75 is connected to an end of the second damping member 73 away from the first damping member 71, and the third damping member 75 is made of a rigid material and has a first preset hardness value.

In this embodiment, in order to further enhance the centering effect on the corrugated rim 50, a third damping member 75 is also disposed on the inner surface of the frame 10, where the third damping member 75 is connected to an end of the second damping member 73 away from the first damping member 71, and the third damping member 75 is made of a rigid material and has a first preset hardness value, the first preset hardness value does not limit its range and is larger than a general elastic material, for example, the third damping member 75 is made of a stainless steel or an aluminum alloy, and the hardness and the rigidity of the third damping member are both larger than those of the first damping member 71 and the second damping member 73, so as to further enhance the stability, effectively ensure the reciprocating motion of the corrugated rim 50 and the diaphragm 30 along the axial direction thereof, and not affect the original compliance of the corrugated rim 50, thereby ensuring the low-frequency performance of the passive radiator 100.

Referring to fig. 1 to 3, in an embodiment, at least two fixing portions 20 are disposed on a periphery of the frame 10, an inner surface of each fixing portion 20 is provided with a fourth damping member 77, the fourth damping member 77 is connected to an end of the third damping member 75 away from the first damping member, and the fourth damping member 77 is made of a rigid material and has a second preset hardness value.

In this embodiment, at least two fixing portions 20 are disposed on the periphery of the frame 10 for connecting and fixing with the applied sound generating device, so as to facilitate the fixing of the passive radiator 100. Here, the fixing portion 20 may be a sheet or a plate directly connected by adhesion; or the holes can be in a hole shape and connected through threads; or a bump or a hole is provided, and the bump or the hole is connected by a buckle, and the like, which is not limited herein. Optionally, a central line of the two fixing portions 20 passes through the center of the frame 10, so that the two fixing portions 20 are symmetrically distributed around the center of the frame 10, and therefore a stable fixing structure can be provided for passive plating, and the passive plating is not prone to shaking.

Here, a fourth damping member 77 is also disposed on an inner surface of each fixing portion 20, the fourth damping member 77 is connected to an end of the third damping member 75 away from the first damping member 71, and the fourth damping member 77 is also made of a rigid material and has a second predetermined hardness value, the second predetermined hardness value is not limited to the range thereof, and is larger than a common elastic material, for example, the material is selected to be stainless steel or aluminum alloy. And indirectly connected with the second damping member 73 through the third damping member 75, thereby further ensuring the centering motion of the corrugated rim 50 and the diaphragm 30 and further preventing the distortion phenomenon of the passive radiator 100. Here, the second preset hardness value may be greater than or equal to the first preset hardness value, thereby further improving the structural stability of the passive radiator 100.

In one embodiment, in order to enhance the installation stability of the fixing portion 20, four fixing portions 20 are provided, the fixing portion 20 is provided with installation holes 21, the installation holes 21 are circular, and the fixing portion 20 is fixed by screwing, so that the assembly, disassembly and maintenance are facilitated. Naturally, the fourth damping member 77 is also provided with a hole corresponding to the mounting hole 21, so that the stability of the fixing can be increased. The fixing part 20 is rectangular, and the connection area can be increased by increasing the area of the fixing part 20 without the limitation of the space of the frame 10 itself, so that the installation stability of the frame 10 can be remarkably improved, and the structural stability of the passive radiator 100 can be improved.

It can be understood that when the frame 10 vibrates with the diaphragm 30, the vibration will tend to be amplified at the two fixing portions 20 due to the fixing limit of the two fixing portions 20, thereby causing a larger resonance amplitude. Therefore, the frame 10 and the fixing portion 20 are integrally formed, for example, when both are made of plastic or plastic material, the frame and the fixing portion are integrally formed by injection molding; or the materials are all metals and are integrally formed by casting, so that the structural strength and the stability of the passive radiator 100 can be effectively improved, and the processing efficiency can be improved.

Referring to fig. 3 and 4, in an embodiment, the passive radiator 100 further includes a supporting frame 60, the supporting frame 60 is disposed inside the frame 10, and a vibration space is formed between the supporting frame 60 and the diaphragm 30, and a periphery of the supporting frame 60 is connected to the fourth damping member 77 and/or the third damping member 75.

In this embodiment, in order to further improve the stability of the centering motion of the diaphragm 30 and the edge 50, a supporting frame 60 is further disposed on the inner side of the frame 10, and the supporting frame 60 may be made of a rigid material and has a third preset hardness value, so that the structural strength is high, and a better supporting effect is achieved. And the third predetermined hardness value may be the same as or even greater than the hardness value of the fourth damping member 77, thereby achieving a better fixing effect. For example, the material of the support bracket 60 is metal, stainless steel, or aluminum alloy.

This support frame 60 and vibrating diaphragm 30 need be separated by certain distance to be formed with the vibration space of vibrating diaphragm 30, avoid causing the interference to the vibration of vibrating diaphragm 30, guarantee that the vocal function of passive radiator 100 is not influenced. The periphery of the supporting frame 60 may be connected to the third damping member 75, the fourth damping member 77, or the connection between the third damping member 75 and the fourth damping member 77, and the connection between the fourth damping member 77, the supporting frame 60, the third damping member 75, and the second damping member 73 may provide further stable support, so as to ensure that the edge 50 and the diaphragm 30 do not generate rolling vibration, and do not distort while improving low-frequency performance.

With reference to fig. 3 and fig. 4, in an embodiment, the supporting frame 60 includes a supporting base 61 and a connecting portion 63 bent and extended from a periphery of the supporting base 61, the connecting portion 63 is connected to the fourth damping member 77, and the supporting base 61 is cross-shaped.

Here, the supporting frame 60 includes a supporting bottom portion 61 and a connecting portion 63, the supporting bottom portion 61 is located at a position opposite to the vibrating diaphragm 30, and the supporting bottom portion 61 is planar, the supporting bottom portion 61 and the connecting portion 63 are arranged to form an included angle, so that the structural stability and strength of the supporting bottom portion 61 can be improved, and meanwhile, a certain buffering effect can be achieved on the resonance of the frame 10. This support bottom 61 sets up to cross, can provide more stable supporting role in save material, and when first damping piece 71 also is cross, can correspond the structure with four fixed part 20, will support four tip and four fourth damping piece 77 of bottom 61 and be connected, thereby furthest's promotion book ring 50 and vibrating diaphragm 30 along its axial reciprocating motion's effect, and can support fixed part 20, effectively guarantee passive radiator 100's installation stability.

Optionally, the included angle between the supporting bottom portion 61 and the connecting portion 63 is a right angle, so that the vibration space can be guaranteed to the greatest extent, a better supporting effect can be provided, and the low-frequency performance of the passive radiator 100 is improved.

The invention also proposes a sound emitting device (not shown) comprising a speaker and a passive radiator 100, the passive radiator 100 being a passive radiator 100 as described in any of the above. Since the passive radiator 100 of the sound generating apparatus adopts all the technical solutions of all the foregoing embodiments, at least all the beneficial effects brought by the technical solutions of the foregoing embodiments are achieved, and no further description is given here.

Here, the sound generating device may be an audio device or an electronic device, such as a sound box, a mobile phone, an earphone, and the like, and is not limited herein. Of course, the sound generating apparatus may also be applied in a vehicle as a car audio, or the like.

The above description is only an alternative embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.