Speaker

Abstract

The present invention provides a speaker. [Solution] A speaker includes a frame, and a vibration system and a magnetic circuit system fixed to the frame, the vibration system includes a diaphragm and a voice coil that drives the vibration sound of the diaphragm, the diaphragm includes a dome portion and a suspension portion surrounding the dome portion, the dome portion includes a first metal dome with a through hole and a second dome covering the through hole, the first metal dome is located between the suspension portion and the second dome and is fixedly connected to the suspension portion and the second dome, respectively. The speaker of the present invention can improve its high frequency performance.

Description

[Technical field]

[0001] The present invention relates to the field of electroacoustic conversion, and in particular to speakers. [Background technology]

[0002] The speaker, also called a horn, can be applied in a speaker box to convert an audio signal into sound reproduction.

[0003] A speaker in the related art generally includes a frame, a vibration system fixed to the frame, and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil that drives the diaphragm to vibrate and produce sound. The diaphragm includes a dome portion and a suspension portion. There is only one dome portion, and it is manufactured from a single material. It is difficult for the dome portion of such a structure to simultaneously meet the requirements for thickness, rigidity, molding, heat dissipation, and high-frequency performance.

[0004] Therefore, it is necessary to provide a new speaker box to solve the above technical problems. Summary of the Invention [Problem to be solved by the invention]

[0005] An object of the present invention is to provide a speaker that solves the above technical problems and improves high frequency performance. [Means for solving the problem]

[0006] In order to achieve the above-mentioned object, the present invention provides a speaker, the speaker including a frame, and a vibration system and a magnetic circuit system fixed to the frame, the vibration system including a vibrating membrane and a voice coil that drives the vibration sound generation of the vibrating membrane, the vibrating membrane including a dome portion and a suspension portion surrounding the dome portion, the dome portion including a first metal dome having a through hole and a second dome covering the through hole, the first metal dome being located between the suspension portion and the second dome and being fixedly connected to the suspension portion and the second dome, respectively.

[0007] Preferably, the first metal dome includes a main body portion, a first fixed portion connecting the second dome portion, and a second fixed portion connecting the suspension portion, the main body portion being located between the first fixed portion and the second fixed portion, the second dome portion including a main body portion and a groove recessed from the outer edge of the main body portion toward the magnetic circuit system, the main body portion being disposed within the through hole, and the lower surface of the first fixed portion being fixedly connected to the groove.

[0008] Preferably, an upper surface of the first fixing portion and an upper surface of the main body portion are flush with each other.

[0009] Preferably, the suspension portion includes an arc-shaped portion, a first connection portion extending inward from one end of the arc-shaped portion, and a second connection portion extending outward from the other end of the arc-shaped portion, the second fixed portion including a connection arm bending and extending from the main body portion in the direction of the magnetic circuit system, and a support arm bending and extending outward from the connection arm, and a lower surface of the first connection portion is fixedly connected to the support arm.

[0010] Preferably, the arcuate portion extends concavely towards the magnetic circuit system.

[0011] Preferably, the voice coil is fixedly connected to the underside of the main body.

[0012] Preferably, the magnetic circuit system includes a bottom plate fixed to the frame, a main magnetic steel and a secondary magnetic steel fixed to the bottom plate and arranged at a distance, a main pole plate attached to the main magnetic steel, and a secondary pole plate attached to the secondary magnetic steel, wherein the secondary pole plate has a fixed pillar that is bent and extends to the suspension section, and a second connection section of the suspension section is fixedly connected to the fixed pillar of the secondary pole plate.

[0013] Preferably, the sub-pole plate is further provided with a recessed portion recessed in a direction away from the vibration membrane, and a projection of the arc-shaped portion along the vibration direction of the vibration membrane is at least partially located in the recessed portion.

[0014] Preferably, the first metal dome is an aluminium dome.

[0015] Preferably, the second dome is an aluminum dome or a composite dome including an aluminum foil layer and a carbon fiber layer. Effect of the Invention

[0016] The dome part of the present invention is formed by connecting the first metal dome and the second dome, which not only makes it easy to mold the dome part, but also improves the strength and high frequency performance of the speaker. In addition, since the second dome is disposed in the through hole of the first metal dome, the speaker space can be saved, and the height of the speaker is not increased by providing two domes.

[0017] In order to more clearly describe the technical solutions in the embodiments of the present invention, the following briefly introduces drawings necessary for describing the embodiments. Obviously, the drawings described below are only embodiments of the present invention, and merely some embodiments of the present invention. Those skilled in the art can further obtain other drawings based on these drawings without any creative efforts. [Brief description of the drawings]

[0018] [Figure 1] 1 is a perspective view of a speaker according to the present invention; [Diagram 2] 1 is an exploded perspective view of a speaker according to the present invention; [Diagram 3] FIG. 2 is a cross-sectional view taken along the line AA in FIG. [Figure 4] FIG. 4 is a partial enlarged view of region B in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] In the following, the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and obviously, the described embodiments are only some of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative labor shall fall within the scope of protection of the present invention.

[0020] As shown in FIGS. 1 to 4, the present invention provides a speaker 100, which includes a frame 10, and a vibration system 20 and a magnetic circuit system 30 fixed to the frame 10.

[0021] The vibration system 20 includes a vibrating membrane 21 and a voice coil 22 that drives the vibration sound of the vibrating membrane 21. The vibrating membrane 21 includes a dome portion 210 and a suspension portion 201 surrounding the dome portion 210. The dome portion 210 includes a first metal dome 211 having a through hole 2113 and a second dome 212 covering the through hole 2113. The first metal dome 211 is located between the suspension portion 201 and the second dome 212 and is fixedly connected to the suspension portion 201 and the second dome 212. Here, the first metal dome 211 may be an aluminum dome or other metal dome, which is easy to process, light, and thin. The second dome 212 may be an aluminum dome or a composite dome including an aluminum foil layer and a carbon fiber layer, which can improve the rigidity of the second dome 212 and can improve the high-frequency performance of the speaker 100. In another embodiment, the second composite dome may be formed by compounding with other materials.

[0022] Specifically, the first metal dome 211 includes a main body portion 2110, a first fixed portion 2111 connecting the second dome 212, and a second fixed portion 2112 connecting the suspension portion 201, the main body portion 2110 being located between the first fixed portion 2111 and the second fixed portion 2112, the second dome 212 including a main body portion 2121 and a groove 2122 recessed from the outer edge of the main body portion 2121 in the direction 30 of the magnetic circuit system, the main body portion 2121 being disposed within the through hole 2113, and the lower surface of the first fixed portion 2111 being fixedly connected to the groove 2122. In this embodiment, the upper surface of first fixing portion 2111 and the upper surface of main body portion 2121 are located in the same plane, that is, dome portion 210 is formed by combining second dome 212 and first metal dome 211, but this does not increase the height of speaker 100, makes full use of the internal space of speaker 100, and improves the strength of dome portion 210.

[0023] The suspension portion 201 includes an arc-shaped portion 2010, a first connecting portion 2011 extending inward from one end of the arc-shaped portion 2010, and a second connecting portion 2012 extending outward from the other end of the arc-shaped portion 2010. The second fixing portion 2112 includes a connecting arm 21120 extending from the main body portion 2110 in a direction 30 toward the magnetic circuit system, and a support arm 21121 extending outward from the connecting arm 21120, and the lower surface of the first connecting portion 2011 is fixedly connected to the support arm 21121. The arc-shaped portion 2010 extends recessed in the direction 30 toward the magnetic circuit system, which makes it easy to reduce the overall height of the speaker 100. In another embodiment, the arc-shaped portion 2010 may extend protruding in a direction away from the magnetic circuit system 30.

[0024] Furthermore, the voice coil 22 is fixedly connected to the lower surface of the main body 2110 of the first metal dome 211, and the voice coil 22 is close to the dome made of metal, so that heat dissipation of the voice coil 22 can be facilitated.

[0025] The magnetic circuit system 30 includes a bottom plate 31 fixed to the frame 10, a main magnetic steel 321 and a sub-magnetic steel 322 fixed to the bottom plate 31 and spaced apart from each other, a main pole plate 331 attached to the main magnetic steel 321, and a sub-pole plate 332 attached to the sub-magnetic steel 322. The sub-pole plate 332 is provided with a fixed post 3320 that is bent and extends to the suspension part 201, and a second connection part 2012 of the suspension part 201 is fixedly connected to the fixed post 3320 of the sub-pole plate 332. The suspension part 201 is further provided with an extension part 2013 that is bent and extends from the second connection part 2012 to the magnetic circuit system 30, and the extension part 2013 is fixedly connected to the outer surface of the fixed column 3320, thereby increasing the connection area between the suspension part 201 and the fixed column 3320 and improving the fixing strength between the suspension part 201 and the fixed column 3320. The sub-pole plate 332 is further provided with a retreat part 3321 that is recessed in a direction away from the vibrating membrane 21, and the projection of the arc-shaped part 2010 along the vibration direction of the vibrating membrane 21 is at least partially located in the retreat part 3321, so that the retreat part 3321 can provide a vibration space for the arc-shaped part 2010.

[0026] The dome section 210 of the present invention is formed by connecting the first metal dome 211 and the second dome 212, which not only makes it easier to mold the dome section but also improves the strength and high frequency performance of the speaker. In addition, the second dome 212 is disposed in the through hole 2113 of the first metal dome 211, which saves space in the speaker 100 and does not increase the height of the speaker 100 by providing two domes.

[0027] The above is merely an embodiment of the present invention, and those skilled in the art can make further improvements without departing from the creative concept of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A speaker including a frame, a vibration system and a magnetic circuit system fixed to the frame, the vibration system including a diaphragm and a voice coil for driving the diaphragm to vibrate and produce sound, the diaphragm including a dome portion and a suspension portion surrounding the dome portion, the dome portion includes a first metal dome having a through hole and a second dome covering the through hole, the first metal dome being located between the suspension portion and the second dome and being fixedly connected to the suspension portion and the second dome, respectively; the suspension portion includes an arcuate portion, The magnetic circuit system includes a bottom plate fixed to the frame, a main magnetic steel and a sub magnetic steel fixed to the bottom plate and spaced apart from each other, a main pole plate attached to the main magnetic steel, and a sub pole plate attached to the sub magnetic steel, A speaker characterized in that the sub-pole plate is further provided with a recessed portion recessed in a direction away from the vibration membrane, and a projection of the arc-shaped portion along the vibration direction of the vibration membrane is at least partially located in the recessed portion.

2. The speaker of claim 1, characterized in that the first metal dome includes a main body portion, a first fixed portion connecting the second dome, and a second fixed portion connecting the suspension portion, the main body portion being located between the first fixed portion and the second fixed portion, the second dome including a main body portion and a groove recessed from an outer edge of the main body portion toward the magnetic circuit system, the main body portion being disposed within the through hole, and the lower surface of the first fixed portion being fixedly connected to the groove.

3. 3. The speaker according to claim 2, wherein an upper surface of the first fixing portion and an upper surface of the main body are flush with each other.

4. The speaker described in claim 2, characterized in that the suspension portion includes a first connection portion extending inward from one end of the arc-shaped portion and a second connection portion extending outward from the other end of the arc-shaped portion, the second fixed portion includes a connection arm bending and extending from the main body portion in the direction of the magnetic circuit system, and a support arm bending and extending outward from the connection arm, and a lower surface of the first connection portion is fixedly connected to the support arm.

5. 5. The speaker according to claim 4, wherein the arc-shaped portion extends concavely toward the magnetic circuit system.

6. 5. The speaker according to claim 4, wherein the voice coil is fixedly connected to a bottom surface of the main body.

7. The speaker according to claim 4, characterized in that the sub-pole plate is provided with a fixed pillar that is bent and extends to the suspension section, and a second connection portion of the suspension section is fixedly connected to the fixed pillar of the sub-pole plate.

8. 2. The loudspeaker of claim 1, wherein the first metal dome is an aluminum dome.

9. 2. The loudspeaker according to claim 1, wherein the second dome is an aluminum dome or a composite dome including an aluminum foil layer and a carbon fiber layer.

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