CN214591948U - Passive radiator - Google Patents

Abstract

A passive radiator comprises a frame body, a vibrating diaphragm, a first connecting part and a connecting film. The frame body surrounds to define a hollow part. The vibrating diaphragm is located in the hollow part and is configured to enable the vibrating device to abut against the vibrating diaphragm. The first connecting portion extends along the extending direction to surround the vibrating diaphragm and is elastically connected between the frame body and the vibrating diaphragm, the first connecting portion is provided with a cross section, the extending direction is perpendicular to the cross section, and at least part of the cross section is U-shaped. The connection film comprises an outer ring, a central part and a plurality of second connection parts. The outer ring is configured to connect to the frame. The central portion is configured to be connected to the diaphragm. The second connecting parts are respectively and elastically connected between the outer ring and the central part. The passive radiator can effectively maintain the tone quality when the passive radiator operates, and can avoid the situation that the sound is distorted.

Description

Passive radiator

Technical Field

The utility model relates to a passive radiator.

Background

Music is an important product of human civilization, and along with the improvement of living standard of people, the types of music related equipment become more and more diversified, wherein a loudspeaker is an important equipment capable of effectively improving volume. In addition to music applications, the user may also be able to hear the message the user wants to publish through a speaker.

However, it is an important issue to be clearly noticed in the industry how to maintain the sound quality and avoid the distortion of the sound, in addition to effectively amplifying the sound volume.

SUMMERY OF THE UTILITY MODEL

An object of the present invention is to provide a passive radiator, which can effectively maintain the tone quality of the passive radiator during operation, and avoid distortion of the sound.

According to an embodiment of the present invention, a passive radiator includes a frame body, a vibrating diaphragm, a first connecting portion, and a connecting film. The frame body surrounds to define a hollow part. The vibrating diaphragm is located in the hollow part and is configured to enable the vibrating device to abut against the vibrating diaphragm. The first connecting portion extends along the extending direction to surround the vibrating diaphragm and is elastically connected between the frame body and the vibrating diaphragm, the first connecting portion is provided with a cross section, the extending direction is perpendicular to the cross section, and at least part of the cross section is U-shaped. The connection film comprises an outer ring, a central part and a plurality of second connection parts. The outer ring is configured to connect to the frame. The central portion is configured to be connected to the diaphragm. The second connecting parts are respectively and elastically connected between the outer ring and the central part.

In one or more embodiments of the present invention, the passive radiator further includes a plurality of reinforcing plates. The reinforcing plates are distributed on the first connecting parts, are parallel to the corresponding cross sections and are attached to the inner edges of the cross sections.

In one or more embodiments of the present invention, the diaphragm has a first symmetry line, and the reinforcing plate is arranged in a mirror image with respect to the first symmetry line.

In one or more embodiments of the present invention, the outer surface is defined outside the cross section, the first connecting portion further includes a plurality of recessed portions, the recessed portions are distributed on the outer surface along the extending direction, and the reinforcing plate is located between two adjacent recessed portions.

In one or more embodiments of the present invention, the outer ring is substantially rectangular and has a continuous inner long side and inner short side, the inner long side is longer than the inner short side, the central portion is substantially rectangular and has a continuous outer long side and outer short side, the outer long side is longer than the outer short side and is opposite to the inner long side, and the outer short side is opposite to the inner short side. The second connecting part extends between the outer ring and the central part and comprises a first end and a second end which are opposite, the first end is further divided into a first sub-end and a second sub-end, the first sub-end is connected with the outer long edge, the second sub-end is connected with the inner long edge, and the second end is connected with the inner short edge.

In one or more embodiments of the present invention, the connection film further includes a plurality of third connection portions, and the third connection portions are respectively elastically connected between the outer ring and the central portion and respectively located between the second connection portions.

In one or more embodiments of the present invention, the connecting film has a second line of symmetry, and the third connecting portion is arranged in a mirror image with respect to the second line of symmetry.

In one or more embodiments of the present invention, the connecting film has a second line of symmetry, and the second connecting portion is arranged in a mirror image with respect to the second line of symmetry.

In one or more embodiments of the present invention, the passive radiator further includes a first adhesive layer and a second adhesive layer. The first adhesive layer is adhered between the diaphragm and the central portion, and the second adhesive layer is adhered between the frame and the outer ring.

In one or more embodiments of the present invention, the second connecting portion has a wave-shaped structure.

The utility model discloses above-mentioned embodiment has following advantage at least:

(1) the reinforcing plate is structurally limited, so that the part of the first connecting part, which is connected with the reinforcing plate, is not easy to elastically deform, therefore, when the passive radiator operates, the cross section of the first connecting part, which is connected with the reinforcing plate, can maintain the shape of at least a part of the reinforcing plate, and the elastic deformation of the first connecting part as a whole is also at least partially performed under the condition of maintaining the U-shaped cross section of the first connecting part. Therefore, when the passive radiator operates, the overall elastic deformation of the first connecting part becomes more stable and uniform, so that the vibration of the vibrating diaphragm relative to the frame body becomes more stable, the second-order modal frequency of the passive radiator during operation can be effectively improved, the resonance amplitude in the main use frequency range can be reduced, the tone quality of the passive radiator during operation can be effectively maintained, and the distortion of sound can be avoided.

(2) The frame body and the vibrating diaphragm are connected through the connecting film, and the second connecting portion which is elastically connected between the outer ring and the central portion of the connecting film can further enhance the stability of elastic deformation of the first connecting portion, so that the vibrating diaphragm is more stable relative to the vibration of the frame body.

Drawings

Fig. 1 is a front perspective view illustrating a passive radiator according to an embodiment of the present invention;

fig. 2 is a rear perspective view of the passive radiator of fig. 1;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

fig. 4 is an exploded view of the passive radiator of fig. 1;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;

fig. 6 is a schematic rear perspective view of a passive radiator according to yet another embodiment of the present invention;

fig. 7 is a schematic rear perspective view of a passive radiator according to another embodiment of the present invention;

fig. 8 is a schematic rear perspective view illustrating a passive radiator according to another embodiment of the present invention;

fig. 9 is a schematic rear perspective view of a passive radiator according to yet another embodiment of the present invention;

fig. 10 is a rear perspective view of a passive radiator according to another embodiment of the present invention;

fig. 11 is a back perspective view illustrating a passive radiator according to still another embodiment of the present invention.

[ notation ] to show

100 passive radiator

110 frame body

120 diaphragm

130 first connection part

131 inner edge

132 inner surface

133 outer surface

134 concave part

140 reinforcing plate

150 connecting film

151 outer ring

151a inner long side

151b inner short side

152 central part

152a outer long edge

152b outer short side

153 second connecting part

154 first end

154a first sub-end

154b second sub-end

155 second end

156 third connecting part

157 bending part

160 first adhesive layer

170 second adhesive layer

200 vibration device

300 casing

A-A, B-B is line segment

CH hollow part

CS transverse section

DN: direction of extension

SL1 first line of symmetry

SL2 second line of symmetry

W1 first Width

W2 second Width

Detailed Description

In the following description, numerous implementation details are set forth in order to provide a more thorough understanding of the present invention. It should be understood, however, that these implementation details should not be used to limit the invention. That is, in some embodiments of the invention, details of these implementations are not necessary. In addition, for the sake of simplicity, certain well-known and conventional structures and elements are shown in the drawings in a simplified schematic manner, and the same reference numerals will be used throughout the drawings to designate the same or similar elements. And features of different embodiments may be applied interactively, if possible.

Unless defined otherwise, all words (including technical and scientific terms) used herein have their ordinary meaning as is understood by those skilled in the art. Furthermore, the definitions of the above words and phrases in general dictionary should be read in the content of the present specification to be consistent with the meaning and meaning of the relevant fields of the present invention. Unless specifically defined otherwise, these terms are not to be interpreted in an idealized or overly formal sense.

Please refer to fig. 1 to 3. Fig. 1 is a front perspective view illustrating a passive radiator 100 according to an embodiment of the present invention. Fig. 2 is a rear perspective view of the passive radiator 100 of fig. 1. Fig. 3 is a cross-sectional view taken along line a-a of fig. 2. In this embodiment, as shown in fig. 1 to 3, a passive radiator 100 includes a frame 110, a diaphragm 120, and a first connecting portion 130. The frame 110 surrounds and defines a hollow CH, and the frame 110 is configured to be fixed to the housing 300 (see fig. 3). The diaphragm 120 is located in the hollow portion CH and configured to abut against a vibration device 200 (see fig. 3). The first connecting portion 130 extends along the extending direction DN to surround the diaphragm 120, and is elastically connected between the frame 110 and the diaphragm 120. When the passive radiator 100 operates, the vibration device 200 drives the diaphragm 120, so that the diaphragm 120 repeatedly vibrates with respect to the frame 110 to generate sound. At this time, the first connection part 130 is repeatedly elastically deformed.

Specifically, as shown in fig. 3, the first connecting portion 130 has a cross section CS, and the extending direction DN is perpendicular to the cross section CS, in the present embodiment, the cross section CS of the first connecting portion 130 is at least partially U-shaped.

Please refer to fig. 4. Fig. 4 is an exploded view showing the passive radiator 100 of fig. 1. It is noted that in the present embodiment, the passive radiator 100 further includes a plurality of reinforcing plates 140. As shown in fig. 4, the reinforcing plates 140 are distributed along the extending direction DN at the first connection portion 130. More specifically, as shown in fig. 3 to 4, the reinforcing plate 140 is substantially parallel to the cross section CS corresponding to the first connecting portion 130 and attached to the inner edge 131 of the cross section CS, and the inner edge 131 defines the inner surface 132 of the first connecting portion 130. In other words, the reinforcing plate 140 is vertically attached to the inner surface 132 of the first connecting portion 130. In this way, due to the structural limitation of the reinforcing plate 140, the portion of the first connecting portion 130 connected to the reinforcing plate 140 is not easily elastically deformed, so that when the passive radiator 100 operates, the cross section CS of the first connecting portion 130 connected to the reinforcing plate 140 can maintain the U-shape at least partially, and the elastic deformation of the first connecting portion 130 as a whole is also performed at least partially while maintaining the U-shape of the cross section CS. Therefore, when the passive radiator 100 operates, the elastic deformation of the first connection portion 130 as a whole becomes more stable and uniform, so that the vibration of the diaphragm 120 relative to the frame 110 also becomes more stable, thereby effectively increasing the second-order modal frequency of the passive radiator 100 during operation, and also reducing the resonance amplitude within the main frequency range, thereby effectively maintaining the tone quality of the passive radiator 100 during operation, and avoiding the distortion of sound.

Structurally, as shown in fig. 4, the diaphragm 120 has a first symmetry line SL1, and the reinforcing plates 140 are distributed in the first connection portion 130 along the extending direction DN and arranged in a mirror image with respect to the first symmetry line SL1, so that when the passive radiator 100 operates, the elastic deformation of the first connection portion 130 with respect to the frame 110 can be more stable and uniform, and the vibration of the diaphragm 120 with respect to the frame 110 can also be more stable.

In the present embodiment, the passive radiator 100 further includes a connection film 150. As shown in fig. 2 and 4, the connection film 150 includes an outer ring 151, a central portion 152, and a plurality of second connection portions 153. The outer ring 151 is configured to connect with the frame 110, the central portion 152 is configured to connect with the diaphragm 120, and the second connecting portions 153 are respectively elastically connected between the outer ring 151 and the central portion 152.

Further, as shown in fig. 4, the outer ring 151 of the connection film 150 is substantially rectangular and has an inner long side 151a and an inner short side 151b connected, and the inner long side 151a of the outer ring 151 is longer than the inner short side 151 b. In contrast, the central portion 152 of the connecting membrane 150 is also substantially rectangular and has an outer long side 152a and an outer short side 152b connected thereto, the outer long side 152a of the central portion 152 is longer than the outer short side 152b and opposite to the inner long side 151a of the outer ring 151, and the outer short side 152b of the central portion 152 is opposite to the inner short side 151b of the outer ring 151. Furthermore, the second connecting portion 153 extends between the outer ring 151 and the central portion 152 of the connecting film 150 and includes a first end 154 and a second end 155 opposite to each other, the first end 154 is further branched into a first sub-end 154a and a second sub-end 154b, the first sub-end 154a is connected to the outer long edge 152a of the central portion 152, the second sub-end 154b is connected to the inner long edge 151a of the outer ring 151, and the second end 155 is connected to the inner short edge 151b of the outer ring 151. In other words, the second connection portion 153 of the connection film 150 is at least partially disposed between the corner of the outer ring 151 and the corner of the central portion 152 to improve the structural strength of the connection film 150.

It should be noted that, by connecting the frame 110 and the diaphragm 120 through the connecting film 150, the second connecting portion 153 elastically connected between the outer ring 151 and the central portion 152 of the connecting film 150 can further enhance the stability of the elastic deformation of the first connecting portion 130, so that the vibration of the diaphragm 120 relative to the frame 110 is more stable.

Furthermore, structurally, as shown in fig. 2 and 4, the connection film 150 has a second symmetry line SL2, and the second connection portions 153 of the connection film 150 are respectively elastically connected between the outer ring 151 and the central portion 152 and arranged in a mirror image with respect to the second symmetry line SL2, so that when the passive radiator 100 operates, the second connection portions 153 of the connection film 150 can further enhance the stability of elastic deformation of the first connection portions 130, so that the vibration of the diaphragm 120 with respect to the frame 110 is more stable.

In practical applications, the passive radiator 100 further includes a first adhesive layer 160 and a second adhesive layer 170. Specifically, as shown in fig. 4, the first adhesive layer 160 is disposed between the diaphragm 120 and the central portion 152 of the connection film 150 to fix the relative position between the diaphragm 120 and the central portion 152, and the second adhesive layer 170 is disposed between the frame 110 and the outer ring 151 of the connection film 150 to fix the relative position between the frame 110 and the outer ring 151. In order to simplify the drawings, the first adhesive layer 160 and the second adhesive layer 170 are not shown in other drawings.

Furthermore, as shown in fig. 1 and 3, an outer surface 133 is defined outside the cross section CS of the first connection portion 130, the outer surface 133 is opposite to the inner surface 132, and the first connection portion 130 further includes a plurality of recessed portions 134, and the recessed portions 134 are distributed on the outer surface 133 along the extending direction DN. In fact, the concave portion 134 can effectively disperse the stress on the first connection portion 130 to prevent the first connection portion 130 from being damaged due to stress concentration, and therefore, the service life of the passive radiator 100 can be effectively prolonged.

Please refer to fig. 5. Fig. 5 is a cross-sectional view taken along line B-B of fig. 4. In the present embodiment, as shown in fig. 5, the reinforcing plate 140 is located between two adjacent recesses 134.

Please refer to fig. 6. Fig. 6 is a back perspective view of a passive radiator 100 according to still another embodiment of the present invention. In this embodiment, as shown in fig. 6, the connection film 150 further includes a plurality of third connection portions 156, and the third connection portions 156 are respectively elastically connected between the outer ring 151 and the central portion 152 of the connection film 150 and respectively located between the second connection portions 153 of the connection film 150, so as to further improve the stability of the vibration of the diaphragm 120 relative to the frame 110. For example, as shown in fig. 7, the third connecting portions 156 are respectively elastically connected between the inner long edge 151a of the outer ring 151 and the outer long edge 152a of the central portion 152, but the invention is not limited thereto. In other embodiments, the third connecting portions 156 may be elastically connected between the inner short side 151b of the outer ring 151 and the outer short side 152b of the central portion 152 according to actual conditions.

Structurally, as shown in fig. 6, the connection film 150 has a second line of symmetry SL2, and the third connection portions 156 are arranged in a mirror image with respect to the second line of symmetry SL2, so that the vibration of the diaphragm 120 with respect to the frame 110 is more stable when the passive radiator 100 operates.

Please refer to fig. 7. Fig. 7 is a back perspective view illustrating a passive radiator 100 according to another embodiment of the present invention. In this embodiment, as shown in fig. 7, the second connecting portion 153 of the connecting film 150 includes a bending portion 157 and opposite first and second ends 154 and 155, the bending portion 157 is connected between the first and second ends 154 and 155, the first end 154 is connected to the central portion 152, the second end 155 is connected to the outer ring 151, and the first and second ends 154 and 155 are substantially aligned with each other.

Please refer to fig. 8. Fig. 8 is a back perspective view of a passive radiator 100 according to another embodiment of the present invention. In the present embodiment, as shown in fig. 8, the second connection portion 153 of the connection film 150 extends between the outer ring 151 and the central portion 152 of the connection film 150. More specifically, the second connecting portion 153 includes a first end 154 and a second end 155 opposite to each other, the first end 154 is connected to the outer long side 152a of the central portion 152, and the second end 155 is connected to the inner corner of the outer ring 151.

Please refer to fig. 9. Fig. 9 is a back perspective view of a passive radiator 100 according to still another embodiment of the present invention. In the present embodiment, as shown in fig. 9, the second connection portion 153 of the connection film 150 extends between the outer ring 151 and the central portion 152 of the connection film 150, and is parallel to the outer long side 152a or the outer short side 152b of the central portion 152. More specifically, the second connecting portion 153 includes a first end 154 and a second end 155 opposite to each other, the first end 154 is connected to the central portion 152, the second end 155 is connected to the outer ring 151, and the first end 154 and the second end 155 are far away from each other in the extending direction DN. For example, in the present embodiment, as shown in fig. 9, the number of the second connection portions 153 is four, and the second connection portions 153 are at least partially rotationally symmetric.

Please refer to fig. 10. Fig. 10 is a back perspective view illustrating a passive radiator 100 according to another embodiment of the present invention. In the present embodiment, as shown in fig. 10, the second connection portion 153 has a wave-shaped structure. Specifically, the second connection portion 153 is wave-shaped in a direction connecting the outer ring 151 and the central portion 152. Furthermore, the second connecting portion 153 includes a first end 154 and a second end 155 opposite to each other, the first end 154 is connected to the central portion 152, the second end 155 is connected to the outer ring 151, and the first end 154 and the second end 155 are substantially aligned with each other. In this embodiment, the first end 154 has a first width W1, the second end 155 has a second width W2, and the first width W1 and the second width W2 are substantially the same as each other.

Please refer to fig. 11. Fig. 11 is a back perspective view illustrating a passive radiator 100 according to still another embodiment of the present invention. In the present embodiment, the first width W1 of the first end 154 and the second width W2 of the second end 155 of the second connection part 153 are different from each other according to actual conditions. As shown in fig. 11, the first width W1 of the first end 154 is greater than the second width W2 of the second end 155 by taking a part of the second connecting portion 153 as an example, but the invention is not limited thereto. In other embodiments, the second width W2 of the second end 155 may also be greater than the first width W1 of the first end 154.

To sum up, the technical solution disclosed by the above embodiments of the present invention has at least the following advantages:

(1) the reinforcing plate is structurally limited, so that the part of the first connecting part, which is connected with the reinforcing plate, is not easy to elastically deform, therefore, when the passive radiator operates, the cross section of the first connecting part, which is connected with the reinforcing plate, can maintain the shape of at least a part of the reinforcing plate, and the elastic deformation of the first connecting part as a whole is also at least partially performed under the condition of maintaining the U-shaped cross section of the first connecting part. Therefore, when the passive radiator operates, the overall elastic deformation of the first connecting part becomes more stable and uniform, so that the vibration of the vibrating diaphragm relative to the frame body becomes more stable, the second-order modal frequency of the passive radiator during operation can be effectively improved, the resonance amplitude in the main use frequency range can be reduced, the tone quality of the passive radiator during operation can be effectively maintained, and the distortion of sound can be avoided.

(2) The frame body and the vibrating diaphragm are connected through the connecting film, and the second connecting portion which is elastically connected between the outer ring and the central portion of the connecting film can further enhance the stability of elastic deformation of the first connecting portion, so that the vibrating diaphragm is more stable relative to the vibration of the frame body.

Although the present invention has been described with reference to the above embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention.

Claims (10)

1. A passive radiator, comprising:

a frame body, which surrounds and defines a hollow part;

a vibrating diaphragm located in the hollow part and configured to allow a vibrating device to abut against the vibrating diaphragm;

a first connecting part, extending along an extending direction to surround the diaphragm and elastically connected between the frame and the diaphragm, wherein the first connecting part has a cross section, the extending direction is perpendicular to the cross section, and at least part of the cross section is U-shaped; and

a linking film, comprising:

an outer ring configured to connect to the frame;

a central portion configured to be connected to the diaphragm; and

and the second connecting parts are respectively and elastically connected between the outer ring and the central part.

2. The passive radiator of claim 1, further comprising a plurality of reinforcing plates disposed on the first connecting portion, each of the reinforcing plates being parallel to the corresponding transverse plane and attached to an inner edge of the transverse plane.

3. The passive radiator of claim 2, wherein the diaphragm has a first line of symmetry, and the plurality of stiffening plates are arranged in mirror image to the first line of symmetry.

4. The passive radiator of claim 2, wherein the outer side of the cross section defines an outer surface, the first connection portion further comprises a plurality of recesses distributed on the outer surface along the extending direction, and each of the reinforcing plates is located between two adjacent recesses.

5. The passive radiator of claim 1, wherein the outer ring is rectangular and has an inner long side and an inner short side connected thereto, the inner long side being longer than the inner short side, the central portion is rectangular and has an outer long side and an outer short side connected thereto, the outer long side being longer than the outer short side and opposite to the inner long side, the outer short side being opposite to the inner short side, each of the second connection portions extends between the outer ring and the central portion and includes a first end and a second end opposite thereto, the first end further diverges into a first sub-end and a second sub-end, the first sub-end connects to the outer long side, the second sub-end connects to the inner long side, and the second end connects to the inner short side.

6. The passive radiator of claim 1, wherein the connecting film further comprises a plurality of third connecting portions, each of the third connecting portions being elastically connected between the outer ring and the central portion and between the second connecting portions.

7. The passive radiator of claim 6, wherein the connection film has a second line of symmetry, and the plurality of third connection portions are arranged in a mirror image with respect to the second line of symmetry.

8. The passive radiator of claim 1, wherein the connection film has a second line of symmetry, and the second connection portions are arranged in a mirror image with respect to the second line of symmetry.

9. The passive radiator of claim 1, further comprising a first adhesive layer and a second adhesive layer, the first adhesive layer being adhered between the diaphragm and the central portion, the second adhesive layer being adhered between the frame and the outer ring.

10. The passive radiator of claim 1, wherein each of the second connection portions is of a wave-type structure.

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