Diaphragm structure of a small speaker

Abstract

The present invention provides a diaphragm structure of a small speaker, wherein the diaphragm structure is combined with a voice coil, and the diaphragm structure includes a suspension and a body. The suspension includes a hollow portion; the body includes a center portion, a raised reinforcing rib, a channel portion, a connecting portion, and a wing portion; the top surface of the voice coil is combined with the bottom surface of the center portion, the bottom surface of the connecting portion, and the bottom surface of the wing portion, and is located below the channel portion. Therefore, the diaphragm structure of the small speaker of the present invention can utilize the channel portion to quickly discharge excess gas in the voice coil, making the vibration of the diaphragm structure more balanced, and can increase the heat exchange of gas inside and outside the voice coil to facilitate heat dissipation, thereby making the diaphragm structure more stable when vibrating greatly, which is not only beneficial to the improvement of volume and sound quality, but also has the effect of improving heat dissipation.

Description

Technical Field

[0001] The present invention relates to a diaphragm structure of a small speaker, and in particular to a diaphragm structure of a small speaker which can quickly discharge excess gas in a voice coil and dissipate heat, thereby making the diaphragm structure more stable when vibrating and improving the volume and sound quality. Background Art

[0002] For commonly used rectangular small speakers, if a circular voice coil is used in combination with a rectangular diaphragm design, the best implementation is for the body to have a flange structure so that the kinetic energy of the voice coil when it vibrates can be evenly transmitted to the entire diaphragm, giving the speaker better volume and sound quality performance.

[0003] However, when the circular voice coil drives the long rectangular diaphragm to vibrate, the diaphragm is not rigid enough, which causes the kinetic energy of the voice coil to not be fully and evenly diffused to the diaphragm, thus causing anti-resonance problems in the mid-frequency area. This makes the mid-frequency area prone to distortion, and the sound quality and volume performance are not as good as the high and low frequencies.

[0004] In addition, the commonly used design is not conducive to the speaker to withstand higher power input, especially in today's electronic products, in order to increase the volume of built-in small speakers, the built-in speakers are constantly required to withstand high power input in exchange for high volume output. However, when the input power increases, the vibration of the voice coil becomes more unstable, especially in the bass, the voice coil has a larger vibration stroke, and it is more difficult to perform stable axial piston movement.

[0005] In order to solve the problem of unstable voice coil vibration, a large amount of magnetic fluid is usually added to the magnetic gap to increase the damping of the voice coil and stabilize its vibration mode; however, when the power input is greater, more magnetic fluid must be added to stabilize the vibration of the voice coil, but the result is that the normal discharge of gas in the voice coil is blocked, which is not conducive to the heat dissipation of the voice coil, but hinders the normal operation of the voice coil and worsens the problem of sound distortion.

[0006] Therefore, how to create a diaphragm structure for a small speaker so as to quickly discharge excess gas in the voice coil and make the diaphragm structure more stable when vibrating sharply, thereby facilitating the improvement of volume and sound quality, and also improving the heat dissipation effect, will be the active disclosure of the present invention. Summary of the invention

[0007] In view of the shortcomings of the above-mentioned known technology, the inventor felt that it was not perfect, so he exhausted his mind to carefully study and overcome it, and then developed a diaphragm structure for a small speaker, hoping to use the channel part to quickly discharge the excess gas in the voice coil, so that the vibration of the diaphragm structure is more balanced, and the heat exchange of the gas inside and outside the voice coil can be increased to facilitate heat dissipation, thereby making the diaphragm structure more stable when vibrating sharply, which is beneficial to the improvement of volume and sound quality, and also has the effect of improving heat dissipation.

[0008] In order to achieve the above-mentioned purpose and other purposes, the present invention provides a diaphragm structure of a small speaker, wherein the diaphragm structure is combined with a voice coil, and the diaphragm structure includes: a suspension edge and a body. The suspension edge includes a hollow portion; the body includes a central portion, at least one raised reinforcing rib, at least one channel portion, a connecting portion and two wing portions, wherein the raised reinforcing rib is arranged at the top of the central portion, the channel portion is located below the raised reinforcing rib, the connecting portion is arranged at the outer side of the central portion, and the equal wing portions are respectively arranged on both sides of the connecting portion, the body, the connecting portion and the suspension edge are combined, and the raised reinforcing rib is located in the hollow portion; wherein the top surface of the voice coil is combined with the bottom surface of the central portion, the bottom surface of the connecting portion and the bottom surface of the equal wing portions, and is located below the channel portion.

[0009] Preferably, the hanging edge also includes an arc-shaped raised portion, which is in the shape of a narrow and long ring. The hollow portion is located at the center of the arc-shaped raised portion. The inner periphery of the arc-shaped raised portion is provided with a first combined edge, and the outer periphery of the arc-shaped raised portion is provided with a second combined edge. The top surface of the connecting portion is combined with the bottom surface of the first combined edge.

[0010] Preferably, the top of the arc-shaped raised portion and the top of the raised reinforcement rib are located at the same horizontal position.

[0011] Preferably, the top of the arc-shaped raised portion is higher than the top of the raised reinforcing rib.

[0012] Preferably, the raised reinforcement rib is in the shape of a narrow and long ring, the curvature of two short sides of the raised reinforcement rib is the same as the curvature of two short sides of the arc-shaped raised portion, and the top surface of the voice coil has four ventilation sections located below the channel portion.

[0013] Preferably, the arc of each ventilation section corresponding to the voice coil is 30°.

[0014] Preferably, the long side extending from the center of the raised reinforcement rib is taken as the starting side, and the position of each ventilation section corresponding to the voice coil is a position between 10° and 55° from the starting side.

[0015] Preferably, the raised reinforcement rib is in the shape of a narrow and long ring, and includes a planar portion, a first side portion and a second side portion, the first side portion is connected to the central portion, the second side portion is connected to the connecting portion, and the planar portion is arranged between the first side portion and the second side portion.

[0016] Preferably, the cross-section of the raised reinforcement rib is in a U-shape.

[0017] Preferably, in the short side direction of the raised reinforcement rib, the ratio of the width of one side of the planar portion, the width between the two sides of the planar portion and the width of the other side of the planar portion is 3:4:3.

[0018] Preferably, the raised reinforcement rib is in the shape of an elongated strip and is one in number, the top surface of the voice coil has two ventilation sections located below the channel portion, and the arc of each ventilation section corresponding to the voice coil is 30°.

[0019] Preferably, the raised reinforcement ribs are in the shape of long strips and there are two of them, the equal raised reinforcement ribs are parallel to each other, the top surface of the voice coil has four ventilation sections located below the equal channel parts, and the arc of each ventilation section corresponding to the voice coil is 30°.

[0020] Preferably, the tops of the equally raised reinforcing ribs respectively have planar portions, and the cross-sections of the equally raised reinforcing ribs are respectively in a U-shape, wherein the ratio of the width of one planar portion, the width between the equally raised planar portions, and the width of another planar portion is 3:4:3.

[0021] Therefore, the diaphragm structure of the small speaker of the present invention can utilize the channel portion to quickly discharge excess gas in the voice coil, making the vibration of the diaphragm structure more balanced, and can increase the heat exchange of gas inside and outside the voice coil to facilitate heat dissipation, thereby making the diaphragm structure more stable when vibrating sharply, which is beneficial to improving the volume and sound quality, and also has the effect of improving heat dissipation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the three-dimensional appearance of a diaphragm structure in an embodiment of the present invention;

[0023] Figure 2 is a three-dimensional exploded schematic diagram of a diaphragm structure in an embodiment of the present invention;

[0024] Figure 3 is a cross-sectional schematic diagram of a diaphragm structure in an embodiment of the present invention;

[0025] Figure 4 Schematic diagram of the three-dimensional appearance of a small speaker in an embodiment of the present invention Figure 1 ;

[0026] Figure 5 is a three-dimensional exploded schematic diagram of a small speaker in an embodiment of the present invention;

[0027] Figure 6 A cross-sectional view of a small speaker in an embodiment of the present invention Figure 1 ;

[0028] Figure 7 is another cross-sectional schematic diagram of a small speaker in an embodiment of the present invention;

[0029] Figure 8 is a schematic diagram of a top view of a diaphragm structure in an embodiment of the present invention;

[0030] Fig. 9 is a schematic diagram of the curvature of the ventilation section in an embodiment of the present invention;

[0031] Fig.10 is a schematic diagram of the position of the ventilation section in an embodiment of the present invention;

[0032] Fig.11 Schematic diagram of the three-dimensional appearance of a small speaker in an embodiment of the present invention Figure 2 ;

[0033] Fig.12 A cross-sectional view of a small speaker in an embodiment of the present invention Figure 2 ;

[0034] Fig.13 Schematic diagram of the three-dimensional appearance of a small speaker in an embodiment of the present invention Figure 3 ;

[0035] Fig.14 A cross-sectional view of a small speaker in an embodiment of the present invention Figure 3 ;

[0036] Fig.15 Schematic diagram of the three-dimensional appearance of a small speaker in an embodiment of the present invention Figure 4 ;

[0037] Fig.16 A cross-sectional view of a small speaker in an embodiment of the present invention Figure 4 .

[0038] Description of reference numerals:

[0039] 1Diaphragm structure

[0040] 11 Overhang

[0041] 111 Hollow

[0042] 112 arc-shaped ridge

[0043] 113 First combination edge

[0044] 114 Second combination edge

[0045] 12 carcasses

[0046] 121 Center

[0047] 122 raised reinforcement ribs

[0048] 1221 plane part

[0049] 1222 first side portion

[0050] 1223 Second side portion

[0051] 123 Channel Department

[0052] 124 connection

[0053] 125 Wing

[0054] 2 Voice Coil

[0055] 3 Bracket

[0056] 4 Magnetic return components

[0057] a1~a7 ventilation section DETAILED DESCRIPTION

[0058] In order to fully understand the purpose, features and effects of the present invention, the present invention is described in detail through the following specific embodiments and the accompanying drawings, as follows:

[0059] Please refer to Figures 1 to 8 As shown in the figure, the present invention provides a diaphragm structure of a small speaker, wherein the diaphragm structure 1 is combined with a voice coil 2, such as Figures 1 to 3 As shown, the diaphragm structure 1 includes a suspension edge 11 and a body 12 .

[0060] The hanging edge 11 includes a hollow portion 111 .

[0061] The carcass 12 includes a central portion 121, at least one raised reinforcing rib 122, at least one channel portion 123, a connecting portion 124 and two wing portions 125. In this embodiment, a narrow and long annular raised reinforcing rib 122 and a narrow and long annular channel portion 123 are used as examples. The raised reinforcing rib 122 is arranged at the top of the central portion 121, the channel portion 123 is located below the raised reinforcing rib 122, the connecting portion 124 is arranged outside the central portion 121, and the wing portions 125 are respectively arranged on both sides of the connecting portion 124. The top surface of the carcass 12 and the connecting portion 124 are combined with the hanging edge 11, and the raised reinforcing rib 122 is located in the hollow portion 111.

[0062] like Figure 5 and Figure 6 As shown, the top surface of the voice coil 2 is combined with the bottom surface of the central portion 121 , the bottom surface of the connecting portion 124 and the bottom surface of the equal wing portion 125 , and is located below the channel portion 123 .

[0063] like Figures 4 to 8 As shown, when the diaphragm structure 1 of the present invention is used, it can be matched with at least one bracket 3 and a magnetic return component 4 to form a small speaker; wherein the magnetic return component 4 is arranged on the bracket 3, and the diaphragm structure 1 can be combined with the suspension edge 11 on the bracket 3, and the voice coil 2 is movably mounted on the magnetic return component 4.

[0064] like Figures 4 to 8 As shown, when the diaphragm structure 1 of the present invention is used, the voice coil 2 and the diaphragm structure 1 are pushed by the magnetic return member 4 to produce sound; since the top surface of the voice coil 2 is combined with the bottom surface of the center portion 121, the bottom surface of the connecting portion 124 and the bottom surface of the equal wing portion 125, and is located below the channel portion 123, when the voice coil 2 cooperates with the diaphragm structure 1 to actuate, the channel portion 123 can be used to quickly discharge excess gas in the voice coil 2, so that the vibration of the diaphragm structure 1 is more balanced, and the heat exchange of the gas inside and outside the voice coil 2 can be increased to facilitate heat dissipation, thereby making the diaphragm structure 1 more stable when vibrating greatly, which is beneficial to the improvement of volume and sound quality, and has the effect of improving heat dissipation.

[0065] In addition, the diaphragm structure 1 of the present invention can be filled with magnetic liquid in the magnetic gap of the magnetic return member 4 according to the actual application requirements so that the voice coil 2 is immersed in the magnetic liquid, thereby increasing the damping of the voice coil 2, so that the voice coil 2 can maintain stable axial movement even at a large amplitude, thereby increasing the power handling capacity of the small speaker, thereby improving the volume and reducing distortion.

[0066] like Figures 1 to 7 As shown, in one embodiment of the present invention, the suspension 11 may further include an arc-shaped protrusion 112, which may be in the form of a narrow and long ring, the hollow portion 111 is located at the center of the arc-shaped protrusion 112, the inner periphery of the arc-shaped protrusion 112 is provided with a first combination edge 113, and the outer periphery of the arc-shaped protrusion 112 is provided with a second combination edge 114. Thus, when the suspension 11 is assembled with the body 12, the top surface of the connecting portion 124 may be combined with the bottom surface of the first combination edge 113, and when the diaphragm structure 1 is assembled with the bracket 3, the second combination edge 114 may be combined with the bracket 3, thereby achieving a stable assembly effect, and increasing the rigidity of the diaphragm structure 1, so that the kinetic energy of the vibration of the voice coil 2 can be stably and evenly diffused to the entire diaphragm structure 1, thereby reducing the problem of distortion of the intermediate frequency.

[0067] like Figures 1 to 3 and Figures 6 to 8 As shown, in one embodiment of the present invention, the raised reinforcing rib 122 may be in the form of a narrow and long ring, the curvature of the two short sides of the raised reinforcing rib 122 is the same as the curvature of the two short sides of the arc-shaped raised portion 112, the voice coil 2 is a perfect circle, and the top surface of the voice coil 2 has four ventilation sections a1 to a4 located below the channel portion 123. The length of the long side of the raised reinforcing rib 122 is greater than the diameter of the voice coil 2, so that the diaphragm structure 1 is suitable for use in small rectangular speakers. In addition, the shape of the diaphragm structure 1 may also be a long rectangle or a long ellipse. Furthermore, as Figures 8 to 10As shown, the arc of each ventilation section a1-a4 corresponding to the voice coil 2 can be 30°, so that the arc of ventilation accounts for one-third of the arc of the voice coil 2 and the arc of bonding accounts for two-thirds of the arc of the voice coil 2, thereby achieving a balance between the ventilation volume of the channel portion 123 and the bonding strength between the voice coil 2 and the body 12. Figures 8 to 10 As shown, the long side extending from the center of the raised reinforcing rib 122 is the starting side, and the position of each ventilation section a1-a4 corresponding to the voice coil 2 can be between 10° and 55° from the starting side. In this way, the excess gas in the voice coil 2 can be quickly discharged, making the vibration of the diaphragm structure 1 more balanced, and increasing the heat exchange of the gas inside and outside the voice coil 2 to help dissipate heat; in addition, since the voice coil 2 no longer accumulates excess gas, when the external input power increases, the amount of magnetic fluid added can be increased, the damping in the voice coil can be increased, and the diaphragm can be more stable when vibrating greatly, which is conducive to the improvement of volume and sound quality, as well as the improvement of heat dissipation effect.

[0068] like Figures 1 to 3 and Figures 6 to 8 As shown, in one embodiment of the present invention, the raised reinforcement rib 122 may be in the form of a narrow and long ring, and the raised reinforcement rib 122 may include a planar portion 1221, a first side portion 1222 and a second side portion 1223, the first side portion 1222 is connected to the central portion 121, the second side portion 1223 is connected to the connecting portion 124, the planar portion 1221 is arranged between the first side portion 1222 and the second side portion 1223, and the top of the arc-shaped raised portion 112 and the planar portion 1221 at the top of the raised reinforcement rib 122 are approximately at the same horizontal position (that is, the top height of the planar portion 1221 is approximately the same as the peak height of the arc-shaped raised portion 112), or the top of the arc-shaped raised portion 112 may be higher than the top of the raised reinforcement rib 122, and the cross-section of the raised reinforcement rib 122 may be in a U-shape, so as to form a corresponding channel portion 123 below the raised reinforcement rib 122. In this way, the channel portion 123 can form a sufficient air permeable space so that the gas inside the voice coil 2 can be discharged to the outside of the voice coil 2 through the air permeable space, and the arrangement of the plane portion 1221, the first side portion 1222 and the second side portion 1223 can increase the rigidity of the diaphragm structure 1, so that the kinetic energy of the vibration of the voice coil 2 can be stably and evenly diffused to the entire diaphragm structure 1, thereby reducing the problem of distortion in the intermediate frequency.

[0069] like Figures 1 to 3 and Figures 6 to 8As shown, in one embodiment of the present invention, in the short side direction of the raised reinforcing rib 122, the ratio of the width of one side of the plane portion 1221, the width between the two sides of the plane portion 1221 and the width of the other side of the plane portion 1221 can be 3:4:3. In this way, the voice coil 2 and the body 12 can have a better bonding strength to ensure that the kinetic energy of the voice coil 2 is evenly transmitted to the body 12, and sufficient air permeability can be taken into account while increasing the rigidity of the diaphragm structure 1 to make the diaphragm structure 1 more stable when it vibrates greatly, so as to improve the volume and sound quality, and also have the effect of improving heat dissipation.

[0070] like Fig.11 and Fig.12 As shown, in addition to the above-mentioned narrow and long annular raised reinforcement ribs, in one embodiment of the present invention, the raised reinforcement ribs 122 may be in the shape of long strips and the number may be one, and the top surface of the voice coil 2 has two ventilation sections a5 located below the channel portion 123 ( Fig.12 The structure in which the ventilation section a5 on one side of the raised reinforcement rib 122 and the voice coil 2 are located below the channel portion 123 and the structure in which the ventilation section a5 on the other side is located below the same channel portion 123 is shown. Fig.12 The structure is the same), the arc of each ventilation section a5 corresponding to the voice coil 2 can be 30°.

[0071] like Fig.13 and Fig.14 As shown, in addition to the above-mentioned one raised reinforcing rib, in one embodiment of the present invention, the raised reinforcing rib 122 can be in the shape of a long strip and the number can be two, and the raised reinforcing ribs 122 are parallel to each other, and the top surface of the voice coil 2 has four ventilation sections a6 located below the two channel portions 123 ( Fig.14 The structure in which two raised reinforcing ribs 122 and two ventilation sections a6 on one side of the voice coil 2 are located below the two channel portions 123, and the structure in which two ventilation sections a6 on the other side are located below the same two channel portions 123 is shown. Fig.14 The same structure), the arc of each ventilation section a6 corresponding to the voice coil 2 can be 30°. In addition, the tops of the equal raised reinforcing ribs 122 can be respectively as follows Figure 3 The raised reinforcement rib 122 shown in the figure has a flat portion 1221, and the cross-section of the raised reinforcement rib 122 can be as follows: Figure 3 The raised reinforcing rib 122 shown is in a U-shape, and the ratio of the width of one planar portion 1221, the width between the planar portions 1221 and the width of another planar portion 1221 may be 3:4:3.

[0072] like Fig.15 and Fig.16As shown, in addition to the above two raised reinforcing ribs, in one embodiment of the present invention, the raised reinforcing ribs 122 may be in the shape of long strips and may be three in number, and the raised reinforcing ribs 122 are parallel to each other, and the top surface of the voice coil 2 has six ventilation sections a7 located below the three channel portions 123 ( Fig.16 The structure of the three raised reinforcing ribs 122 and the three ventilation sections a7 on one side of the cross section of the voice coil 2 being located below the three channel portions 123, and the structure of the three ventilation sections a7 on the other side being located below the same three channel portions 123 is shown. Fig.16 The structure of Figures 11 to 16 As shown, the number of the raised reinforcing rib 122 of the present invention can be one or a plurality of ribs.

[0073] The present invention has been disclosed in the above with preferred embodiments, but those skilled in the art should understand that the embodiments are only used to describe the present invention and should not be interpreted as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to the embodiments should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be based on the scope of the patent application.

Claims

1. A diaphragm structure of a small speaker, characterized in that: The diaphragm structure is combined with a voice coil, and the diaphragm structure comprises: A hanging edge including a hollow portion; and A carcass, comprising a central portion, at least one raised reinforcing rib, at least one channel portion, a connecting portion and two wing portions, wherein the raised reinforcing rib is arranged at the top of the central portion, the channel portion is located below the raised reinforcing rib, the connecting portion is arranged at the outer side of the central portion, the two wing portions are respectively arranged at both sides of the connecting portion, the connecting portion of the carcass is combined with the hanging edge, and the raised reinforcing rib is located in the hollow portion; Wherein, the top surface of the voice coil is combined with the bottom surface of the central portion, the bottom surface of the connecting portion and the bottom surfaces of the two wing portions, and is located below the channel portion; The hanging edge also includes an arc-shaped protrusion, which is in the shape of a narrow and long ring. The hollow portion is located at the center of the arc-shaped protrusion. The inner periphery of the arc-shaped protrusion is provided with a first combined edge, and the outer periphery of the arc-shaped protrusion is provided with a second combined edge. The top surface of the connecting portion is combined with the bottom surface of the first combined edge. The raised reinforcement rib is in the shape of a narrow and long ring, the curvature of the two short sides of the raised reinforcement rib is the same as the curvature of the two short sides of the arc-shaped raised portion, and the top surface of the voice coil has four ventilation sections located below the channel portion.

2. The diaphragm structure of the small speaker according to claim 1, characterized in that: The top of the arc-shaped raised portion and the top of the raised reinforcing rib are located at the same horizontal position; or, the top of the arc-shaped raised portion is higher than the top of the raised reinforcing rib.

3. The diaphragm structure of the small speaker according to claim 1, characterized in that: The arc of each ventilation section corresponding to the voice coil is 30°.

4. The diaphragm structure of the small speaker according to claim 3, characterized in that: The long side extending from the center of the raised reinforcement rib is taken as the starting side, and the position of each ventilation section corresponding to the voice coil is a position between 10° and 55° from the starting side.

5. The diaphragm structure of a small speaker according to claim 1, characterized in that: The raised reinforcement rib is in the form of a narrow and long ring, and includes a planar portion, a first side portion and a second side portion, the first side portion is connected to the central portion, the second side portion is connected to the connecting portion, and the planar portion is arranged between the first side portion and the second side portion.

6. The diaphragm structure of the small speaker according to claim 5, characterized in that: The cross section of the raised reinforcing rib is in a U-shape.

7. The diaphragm structure of a small speaker according to claim 5, characterized in that: In the short side direction of the raised reinforcement rib, the ratio of the width of one side of the planar portion, the width between both sides of the planar portion, and the width of the other side of the planar portion is 3:4:3.

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