A sound film and a loudspeaker thereof

Abstract

The application discloses a sound film and a loudspeaker thereof, and belongs to the field of loudspeakers. The sound film comprises a vibrating film and an outer peripheral film. The vibrating film is in an arched shape, and the outer peripheral film is arranged around the vibrating film and is connected with the vibrating film. The outer peripheral film is arched along the axial direction of the sound film to form a plurality of folded portions, and the folded portions are arranged along the radial direction of the outer peripheral film. Connecting portions are formed between two adjacent folded portions on the outer peripheral film. One end of each folded portion close to the vibrating film is provided with a first abutting edge, and one end of each connecting portion close to the vibrating film is provided with a second abutting edge. The first abutting edge and the second abutting edge are arranged in a staggered manner in height. The first abutting edge and the second abutting edge are respectively abutted on the surface of the vibrating film. When the vibrating film vibrates, the vibrating film is not easy to deviate from the Z-axis direction, and is not easy to appear inclined vibration relative to the Z-axis direction. The sound quality of the sound film is ensured, and the sound film is not easy to appear noise. The vibrating film is less deviated, and the sound film is not easy to be damaged.

Description

Technical Field

[0001] This invention relates to the field of diaphragm manufacturing technology, and in particular to a diaphragm and its loudspeaker. Background Technology

[0002] A loudspeaker is a transducer that converts electrical signals into sound signals, and its performance greatly affects sound quality. There are many types of loudspeakers, and their prices vary significantly. Audio electrical energy, through electromagnetic, piezoelectric, or electrostatic effects, causes the diaphragm to vibrate and resonate with the surrounding air, producing sound. The diaphragm is the most important component of a loudspeaker used for vibrating and producing sound.

[0003] In current speaker diaphragms, the central part of the diaphragm is connected to the outer diaphragm, which surrounds the central part. The voice coil is connected at the junction of the central part and the outer diaphragm, and the outermost part of the outer diaphragm is fixed to the speaker frame. In this structure, the junction of the central part and the outer diaphragm forms a circumferential connecting line. When the central part vibrates, it is difficult to maintain vibration in the ideal Z-axis direction, and it is prone to tilted vibration relative to the Z-axis direction, which disturbs the frequency response, results in poor sound quality of the diaphragm, is prone to noise, and the diaphragm is easily damaged. Summary of the Invention

[0004] The purpose of this invention is to provide a diaphragm and its loudspeaker, in which the diaphragm vibrates in the Z-axis direction and is less prone to tilting vibration relative to the Z-axis direction, thus ensuring the sound quality of the diaphragm, reducing noise, and preventing damage to the diaphragm.

[0005] This invention discloses a sound diaphragm, comprising a vibrating diaphragm and a peripheral diaphragm; the vibrating diaphragm is arched, and a peripheral diaphragm is arranged around the vibrating diaphragm and connected to it; the peripheral diaphragm is arched along the axial direction of the sound diaphragm to form a plurality of pleats, and the pleats extend along the radial direction of the peripheral diaphragm; a connecting portion is formed between two adjacent pleats on the peripheral diaphragm; a first abutting edge is formed at the end of the pleat near the vibrating diaphragm, and a second abutting edge is formed at the end of the connecting portion near the vibrating diaphragm, the first abutting edge and the second abutting edge being staggered in height; the first abutting edge and the second abutting edge respectively abut against the surface of the vibrating diaphragm.

[0006] Optionally, a side abutment edge is also formed at the end of the pleated portion near the vibrating diaphragm, the side abutment edge being connected to the first abutment edge and the second abutment edge respectively; the side abutment edge abuts against the surface of the vibrating diaphragm.

[0007] Optionally, the top of the pleated portion is provided with an arched sub-portion, which extends along the length direction of the pleated portion.

[0008] Optionally, there are two arched sections, which are arranged opposite each other on both sides of the top of the pleated section.

[0009] Optionally, the first extension edge is arranged around the edge of the diaphragm, and the second abutting edge abuts on the first extension edge.

[0010] Optionally, the sound film further comprises a voice coil, the first extension edge extends out a lower extension edge in a direction opposite to the arching direction of the diaphragm, and the voice coil is connected to a side of the first extension edge in the direction opposite to the arching direction of the diaphragm and is located inside the lower extension edge.

[0011] Optionally, the sound film further comprises a fixing member, the outer edge of the outer peripheral film extends out to form a second extension edge, and the fixing member is connected to the second extension edge to fix the sound film.

[0012] Optionally, the inner edge of the outer peripheral film extends inwards to form a first inner extension edge, and the first inner extension edge is connected to the diaphragm.

[0013] Optionally, the height difference between the first abutting edge and the second abutting edge is 1mm±0.2mm.

[0014] The application further discloses a loudspeaker comprising the sound film.

[0015] The sound film of the application comprises a plurality of folded portions formed by arching the outer peripheral film in the axial direction of the sound film, a connecting portion formed between two adjacent folded portions, a first abutting edge of the folded portion and a second abutting edge of the connecting portion respectively abutting on the surface of the diaphragm, and the first abutting edge and the second abutting edge are arranged in a staggered manner in terms of height. In this way, the connection between the diaphragm and the outer peripheral film is not a regular circumferential connection line, but a fluctuating connection line with high and low levels. When the diaphragm vibrates, the first abutting edge and the second abutting edge respectively limit the diaphragm in different Z-axis direction positions, so that the diaphragm is not easy to deviate from the Z-axis direction and is not easy to tilt relative to the Z-axis direction when vibrating, the sound quality of the sound film is ensured, noise is not easy to occur, the deviation of the sound film is small, and the sound film is not easy to be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings included are intended to provide a further understanding of the embodiments of the application and constitute a part of the specification, serve to explain the principles of the application, and together with the text description, explain the application. Obviously, the accompanying drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor. In the drawings:

[0017] Figure 1 is a schematic view of the sound film of the embodiment of the application;

[0018] Figure 2 is another schematic view of the sound film of the embodiment of the application;

[0019] Figure 3is a cross-sectional view of an embodiment of the sound film of the present application;

[0020] Figure 4 is Figure 3 is a partial enlarged view of part A in the above figure;

[0021] Figure 5 is an exploded view of an embodiment of the sound film of the present application;

[0022] Figure 6 is another cross-sectional view of an embodiment of the sound film of the present application.

[0023] wherein 1, diaphragm; 11, first extension edge; 12, lower extension edge; 2, peripheral membrane; 21, pleat; 211, first abutting edge; 212, side abutting edge; 213, arch subpart; 22, connecting part; 221, second abutting edge; 23, second extension edge; 24, first inner extension edge; 3, fixing member; 4, voice coil. DETAILED DESCRIPTION

[0024] It is to be understood that the terminology used herein is for the purpose of describing specific embodiments only and is not intended to be limiting. The specific structural and functional details disclosed herein are not to be interpreted as limiting but merely as a representative basis for teaching one skilled in the art to manufacture the application.

[0025] The present application will now be described in detail with reference to the accompanying drawings and optional embodiments.

[0026] As Figures 1 to 4 shown, as an embodiment of the present application, a sound film is disclosed, the sound film comprising a diaphragm 1 and a peripheral membrane 2; the diaphragm 1 is in an arch shape, and the peripheral membrane 2 is arranged around the diaphragm 1 and connected with the diaphragm 1; the peripheral membrane 2 is arched along the axial direction of the sound film to form a plurality of pleats 21, and the pleats 21 are arranged along the radial direction of the peripheral membrane 2; a connecting part 22 is formed between two adjacent pleats 21 on the peripheral membrane 2; one end of the pleat 21 close to the diaphragm 1 is formed with a first abutting edge 211, and one end of the connecting part 22 close to the diaphragm 1 is formed with a second abutting edge 221; the first abutting edge 211 and the second abutting edge 221 are arranged in staggered manner; and the first abutting edge 211 and the second abutting edge 221 abut on the surface of the diaphragm 1, respectively.

[0027] The sound film of the present application, by forming a plurality of pleats 21 on the outer peripheral film 2 along the axial direction of the sound film, forming a connecting portion 22 between two adjacent pleats 21, the first abutting edge 211 of the pleat 21 and the second abutting edge 221 of the connecting portion 22 are respectively abutted on the surface of the diaphragm 1, and the first abutting edge 211 and the second abutting edge 221 are arranged in staggered high and low. In this way, the connection between the diaphragm 1 and the outer peripheral film 2 is not a regular circumferential connection line, but a high-low undulating connection line. When the diaphragm 1 vibrates, the first abutting edge 211 and the second abutting edge 221 are respectively positioned in different Z-axis direction positions of the diaphragm 1, so that the diaphragm 1 is not easy to deviate from the Z-axis direction when vibrating, and is not easy to appear inclined vibration relative to the Z-axis direction, ensuring the sound quality of the sound film, not easy to appear noise, the deviation of the sound film is less, and the sound film is not easy to damage.

[0028] Specifically, the pleats 21 can be arranged in a specific number as needed, for example, 24 pleats 21, 24 connecting portions 22, etc. After the outer peripheral film 2 is provided with the pleats 21, the whole is in a crumpled shape.

[0029] In addition, the pleats 21 are arranged on the outer peripheral film 2, and the pleats 21 are arranged along the radial direction of the outer peripheral film 2, which can enhance the structural strength of the outer peripheral film 2 and better limit the inclined vibration of the diaphragm 1.

[0030] Specifically, the radial cross section of the pleat is in a trapezoidal shape, and the bearing effect is better.

[0031] Optionally, as shown in Figure 1 or Figure 4 The end of the pleat 21 close to the diaphragm 1 is also formed with a side abutting edge 212, the side abutting edge 212 is connected with the first abutting edge 211 and the second abutting edge 221 respectively; the side abutting edge 212 is abutted on the surface of the diaphragm 1. In this scheme, the side abutting edge 212 is further abutted on the surface of the diaphragm 1, and the side abutting edge 212 can also limit the vibration of the diaphragm 1, further preventing the inclined vibration of the diaphragm 1 relative to the Z-axis direction. Of course, in another embodiment, the side abutting edge 212 can also not be abutted on the surface of the diaphragm 1. At this time, the side abutting edge 212 is arched relative to the surface of the diaphragm 1.

[0032] Specifically, the first abutting edge 211, the second abutting edge 221 and the side abutting edge 212 can be straight lines or arcs.

[0033] Optionally, as shown in Figure 6As shown, the top of the pleat 21 is provided with an arched arching sub-portion 213, which extends along the length direction of the pleat 21. In this scheme, the arched arching sub-portion 213 can further strengthen the structural strength of the pleat 21. Alternatively, the arching sub-portion 213 has two, and the two arching sub-portions 213 are oppositely arranged on both sides of the top of the pleat 21, and the structural strength of the pleat 21 is large and the bearing capacity is large.

[0034] Alternatively, as shown in Figure 5 As shown, the edge of the diaphragm 1 is provided with a first outer extension edge 11, and the second abutting edge 221 abuts on the first outer extension edge 11. In this scheme, the second abutting edge 221 abuts on the first outer extension edge 11, and the abutting of the second abutting edge 221 is more stable. Specifically, the two abutting edges abut at the connection of the first outer extension edge 11 and the edge of the diaphragm 1.

[0035] Alternatively, the sound film further comprises a voice coil 4, and the edge of the first outer extension edge 11 extends out a lower extension edge 12 in the direction opposite to the arching direction of the diaphragm 1; the voice coil 4 is connected to the side of the first outer extension edge 11 opposite to the arching direction of the diaphragm 1 and located inside the lower extension edge 12. In this scheme, the voice coil 4 is connected to the side of the first outer extension edge 11 opposite to the arching direction of the diaphragm 1 and located inside the lower extension edge 12, so that the fixing of the voice coil 4 is easier and the fixing effect is better.

[0036] Alternatively, as shown in Figure 1 and Figure 5 As shown, the sound film further comprises a fixing member 3, the outer edge of the outer peripheral film 2 extends outward to form a second outer extension edge 23, and the fixing member 3 is connected to the second outer extension edge 23 for fixing the sound film. In this scheme, the fixing member 3 can fix the sound film on the mounting frame of the loudspeaker, so as to realize the fixing of the sound film.

[0037] Alternatively, the inner side of the outer peripheral film 2 extends inward to form a first inner extension edge 24, and the first inner extension edge 24 is connected with the diaphragm 1. In this scheme, the first inner extension edge 24 can facilitate the connection with the diaphragm 1, so that the connection between the outer peripheral film 2 and the diaphragm 1 is stable and firm.

[0038] Alternatively, the height difference between the adjacent first abutting edge 211 and the second abutting edge 221 is 1mm±0.2mm. In this scheme, the height difference between the first abutting edge 211 and the second abutting edge 221 is 1mm±0.2mm, and the effect of preventing Z-axis vibration deviation is good. Specifically, the height difference between the first abutting edge 211 and the second abutting edge 221 is 1mm.

[0039] The diaphragm 1 and the outer peripheral film 2 of the present application can be made of aluminum, titanium, Mylar, PEI, PEN, PU, etc., and have a deformation effect. The diaphragm 1 and the outer peripheral film 2 can be integrally connected or connected by adhesive after being separately formed. In the application of the diaphragm, the outer edge of the outer peripheral film 2 is fixed on the speaker frame, and the magnetic circuit of the speaker inputs electrical energy to the voice coil 4, the voice coil 4 generates vibration force, and the vibration energy proportional to the current input to the voice coil 4 makes the voice coil 4 generate Z-direction movement. The vibration of the voice coil 4 is transmitted to the diaphragm 1, and the diaphragm 1 also vibrates up and down in the Z-direction, thereby generating sound by oscillating air.

[0040] As another embodiment of the present application, a speaker is disclosed, which comprises the diaphragm as described above.

[0041] The above is a further detailed description of the present application in combination with specific optional embodiments, and the specific implementation of the present application cannot be limited to these descriptions. For ordinary skilled persons in the technical field to which the present application belongs, a number of simple deductions or substitutions can be made without departing from the concept of the present application, and all of them should be regarded as falling within the protection scope of the present application.

Claims

1. A sound film, characterized by The sound film comprises a vibrating film and a peripheral film; the vibrating film is arched, the peripheral film is arranged around the vibrating film and is connected with the vibrating film; the peripheral film is arched along the axial direction of the sound film to form a plurality of pleats, the pleats are arranged along the radial direction of the peripheral film; a connecting portion is formed between two adjacent pleats on the peripheral film; one end of the pleat close to the vibrating film is provided with a first abutting edge, one end of the connecting portion close to the vibrating film is provided with a second abutting edge, and the first abutting edge and the second abutting edge are arranged in staggered manner; the first abutting edge and the second abutting edge abut on the surface of the vibrating film respectively; The top of the pleat is provided with an arched sub-arched portion; the sub-arched portion has two, and the two sub-arched portions are arranged on both sides of the top of the pleat along the length direction of the pleat and are opposite to each other; The one end of the pleat close to the vibrating film is further provided with a side abutting edge, and the side abutting edge is connected with the first abutting edge and the second abutting edge respectively; the side abutting edge abuts on the surface of the vibrating film.

2. The sound film according to claim 1, wherein The edge of the vibrating film is provided with a first extension edge around, and the second abutting edge abuts on the first extension edge.

3. The sound film according to claim 2, wherein The sound film further comprises a voice coil, and the edge of the first extension edge extends out a lower extension edge in the direction opposite to the arching direction of the vibrating film; the voice coil is connected to the side of the first extension edge in the direction opposite to the arching direction of the vibrating film and is located inside the lower extension edge.

4. The sound film according to claim 1, wherein The sound film further comprises a fixing member, the outer edge of the peripheral film extends outward to form a second extension edge, and the fixing member is connected to the second extension edge to fix the sound film.

5. The sound film according to claim 1, wherein The inner side of the peripheral film extends inward to form a first extension edge, and the first extension edge is connected with the vibrating film.

6. The sound film according to claim 1, wherein The height difference between the adjacent first abutting edge and the second abutting edge is 1mm±0.2mm.

7. A loudspeaker, characterised in that The sound film comprises the sound film according to any one of claims 1 to 6. The sound film comprises the sound film according to any one of claims 1 to 6.

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