Vibrating diaphragm and loudspeaker

Abstract

The vibrating diaphragm comprises a vibrating diaphragm body, the vibrating diaphragm body comprises a central portion, a folding ring arranged on the periphery of the central portion in a surrounding mode and a fixing portion located on the periphery of the folding ring, the side, facing the central portion, of the folding ring is arranged in a protruding mode, the section of at least part of the folding ring is in a wave shape, and the fixing portion is located on the periphery of the folding ring. Wave crests and wave troughs of the folding ring extend in the circumferential direction of the folding ring; the wave crests and the wave troughs are arranged on the folding ring, so that the stress of the vibrating diaphragm can be reduced, the folding of the vibrating diaphragm is improved, and the product performance, the reliability margin and the sound quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, in particular to a diaphragm and a loudspeaker using the diaphragm. Background Art

[0002] With the development of mobile phones in recent years, the sound quality of mobile phones has become a major pain point in mobile phone applications. In the existing technology, the shape and structure of the diaphragm of mobile phone speakers are relatively fixed, and the structural design of the diaphragm makes it easy for the diaphragm to fold and high-frequency split vibration when the diaphragm is working, resulting in limited reliability, performance and sound quality. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a diaphragm which can reduce the stress of the diaphragm and improve the folding of the diaphragm.

[0004] In order to solve the above technical problems, the technical solution of the utility model is: a diaphragm, including a diaphragm body, the diaphragm body including a central part, a folded ring arranged on the outer periphery of the central part, and a fixed part located on the outer periphery of the folded ring, the folded ring is convexly arranged toward one side of the central part, at least a part of the cross-section of the folded ring is wavy, and the crests and troughs of the folded ring extend along the circumference of the folded ring.

[0005] Preferably, the fold ring has a plurality of wave segments, the cross-section of the wave segments is wave-shaped, and the plurality of wave segments are arranged at intervals along the circumference of the fold ring.

[0006] Preferably, the cross-sections of the folded rings are all wavy.

[0007] Preferably, the distances between any two adjacent wave peaks are equal.

[0008] Preferably, the distances between any two adjacent troughs are equal.

[0009] Preferably, the distances between any two adjacent wave crests and wave troughs are equal.

[0010] Preferably, two adjacent wave crests are symmetrical with the midline of the wave trough as the center.

[0011] Preferably, the folding ring is a circular folding ring or a square folding ring.

[0012] Another technical problem to be solved by the utility model is to provide a loudspeaker based on the above-mentioned diaphragm.

[0013] To solve the above technical problems, the technical solution of the utility model is: a speaker, including a diaphragm assembly and a magnetic circuit assembly, the diaphragm assembly includes a voice coil and the diaphragm mentioned above, the voice coil is fixedly connected to the diaphragm, and the voice coil is located in the magnetic field generated by the magnetic circuit assembly.

[0014] Preferably, the diaphragm assembly further includes a dome, the dome is fixed to the central portion of the diaphragm, and the voice coil is fixedly connected to the dome.

[0015] The technical effects of this application are:

[0016] The present application discloses a diaphragm, including a diaphragm body, the diaphragm body including a central portion, a folded ring arranged around the periphery of the central portion, and a fixed portion located around the periphery of the folded ring, the folded ring being convexly arranged toward one side of the central portion, at least a portion of the folded ring having a wavy cross-section, the crests and troughs of the folded ring both extending along the circumference of the folded ring; arranging crests and troughs on the folded ring can reduce diaphragm stress, which is beneficial to improving the folding of the diaphragm, thereby improving product performance, reliability margin and sound quality.

[0017] A loudspeaker adopts the diaphragm described above, and sets a wave structure on the fold ring of the diaphragm, relying on the layout of wave crests and wave troughs to reduce the diaphragm stress and improve the diaphragm folding, thereby improving the performance, reliability margin and sound quality of the loudspeaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention.

[0019] Figure 1 This is a schematic diagram of the structure of the embodiment of the utility model Figure 1 ;

[0020] Figure 2 This is a schematic diagram of the structure of the embodiment of the utility model Figure 1 ;

[0021] Figure 3 It is a cross-sectional view of an embodiment of the utility model;

[0022] Figure 4 It is a stress schematic diagram of an embodiment of the utility model;

[0023] Figure 5 It is a stress schematic diagram of the prior art;

[0024] Figure 6 It is a usage state diagram of the utility model.

[0025] In the figure: 11-central part; 12-fixed part; 2-folded ring; 3-ring cavity; 4-wave crest; 5-wave trough; 61-magnetic yoke; 62-main magnet; 63-side magnet; 64-center magnetic plate; 65-frame; 66-voice coil; 67-spherical top. DETAILED DESCRIPTION

[0026] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, only certain exemplary embodiments of the present invention are described by way of illustration. Needless to say, those skilled in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and descriptions are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0027] like Figure 1 and Figure 2 As shown, a diaphragm includes a diaphragm body, the diaphragm body includes a central portion 11, a folded ring 2 arranged around the periphery of the central portion 11, and a fixed portion 12 located around the periphery of the folded ring 2, the folded ring 2 is convexly arranged toward one side of the central portion 11, at least a portion of the cross-section of the folded ring 2 is wavy, and the crests 4 and troughs 5 of the folded ring 2 extend along the circumference of the folded ring 2.

[0028] The fold ring 2 forms a ring cavity 3 with an opening on one side, and the outer wall of the ring cavity 3 is arranged with outwardly protruding crests 4 and inwardly recessed troughs 5, and the staggered arrangement of the crests 4 and the troughs 5 makes the cross-section of the fold ring 2 form a wave shape, and the depth direction of the crests 4 and the troughs 5 is perpendicular to the tangent direction of the fold ring 2, that is, the crests 4 and the troughs 5 rise and fall in the tangent direction of the fold ring 2 and extend in a wave shape. The single fold ring 2 in the prior art is designed to be in a wave shape, and the wave is consistent with the vibration direction of the diaphragm, which improves the vibration stress of the diaphragm, thereby improving product performance, reliability margin and sound quality.

[0029] Specifically, the cross-section of the fold ring 2 is semicircular, and any point on the fold ring 2 has a tangent. The crest 4 and the trough 5 are arranged on the semicircular wall of the fold ring 2. The center line of the crest 4 is perpendicular to the tangent of the fold ring 2 at that location, and the center line of the trough 5 is perpendicular to the tangent of the fold ring 2 at that location.

[0030] Embodiment 1:

[0031] The fold ring 2 has a plurality of wave segments, the cross section of the wave segments is wave-shaped, and the plurality of wave segments are arranged at intervals along the circumference of the fold ring 2. For example, the fold ring 2 is divided into ten segments, five of which are wave segments and five are not wave segments, and along the circumference of the fold ring 2, the wave segments and the non-wave segments are arranged at intervals.

[0032] Embodiment 2:

[0033] The cross-section of the fold ring 2 is wavy, that is, the wave crests 4 and troughs 5 of the wave extend along the circumference of the fold ring 2. That is, the length of the wave crest 4 is equal to the length of the fold ring 2, and the length of the wave trough 5 is also equal to the length of the fold ring 2.

[0034] The distance between any two adjacent crests 4 is equal. The distance between any two adjacent troughs 5 is equal. The distance between any two adjacent crests 4 and troughs 5 is equal. The following example illustrates the above constraints. Figure 3 As shown, the three adjacent peaks 4 are marked as point a1, point a2 and point a3, respectively; the trough 5 between point a1 and point a2 is marked as point b1; the trough 5 between point a2 and point a3 is marked as point b2; the trough 5 adjacent to point a3 is marked as point b3; the above constraints can be marked by the following equations, respectively: distance a1→a2=distance a2→a3, distance b1→b2=distance b2→b3, distance a1→b1=distance b1→a2.

[0035] Preferably, two adjacent wave crests 4 are symmetrical with the midline of the wave trough 5 as the center.

[0036] The shape of the folding ring 2 can be set according to the structural requirements of the speaker module. For example, the folding ring 2 is a circular folding ring 2 or a square folding ring 2. Of course, the shape of the folding ring 2 is not limited to the two shapes listed above.

[0037] After the wave segment is arranged on the fold ring 2 of the diaphragm, the stress of the diaphragm can be effectively reduced. The diaphragm described in the technical solution and the diaphragm in the prior art are subjected to stress test experiments. Figure 4 As shown in the figure, a schematic diagram of the stress on the entire diaphragm of the present technical solution is shown, and the maximum stress is 1.13*108, Figure 5 A stress diagram of the prior art solution without a designed wave segment is shown, and the maximum stress reaches 4.72*108. The maximum stress of the prior art is more than four times that of the technical solution of the present application. Therefore, the design of the wave segment is conducive to stress reduction, improving the diaphragm membrane folding, improving high-frequency split vibration, and increasing the reliability margin.

[0038] The diaphragm described in this technical solution has the following characteristics:

[0039] ①. By limiting the structure of the fold 2 of the single diaphragm, a wave segment is designed on the fold 2. By limiting the shape, position and characteristics of the wave segment, the vibration stress of the diaphragm is improved, thereby improving product performance, reliability margin and sound quality.

[0040] ②. This technical solution only needs to design and control the wave section of the diaphragm, which has obvious effects and is easy to implement;

[0041] ③. It can be promoted and used on mobile phones, tablets, and laptops, and is highly promotable.

[0042] A loudspeaker includes a diaphragm assembly and a magnetic circuit assembly, wherein the diaphragm assembly includes a voice coil 66 and the diaphragm described above, wherein the voice coil 66 is fixedly connected to the diaphragm and is located in the magnetic field generated by the magnetic circuit assembly. The diaphragm assembly also includes a dome 67, wherein the dome 67 is fixed to the central portion 11 of the diaphragm, and the voice coil 66 is fixedly connected to the dome 67.

[0043] The speaker adopts the diaphragm described above, and a wave section is set or partially set on the diaphragm fold ring 2, which can reduce the diaphragm stress and improve the diaphragm folding, thereby improving the performance, reliability margin and sound quality of the speaker.

[0044] In order to better explain the use of this diaphragm in the speaker, Figure 6 A structural diagram of a diaphragm in a use state of the utility model is shown; in the figure, the magnetic circuit assembly includes a central magnetic circuit installed on a loudspeaker yoke 61 and a side magnetic circuit arranged around the periphery of the central magnetic circuit, the central magnetic circuit and the side magnetic circuit are arranged at intervals to form a magnetic gap, the central magnetic circuit includes a main magnet 62 and a central magnetic conductive plate 64 arranged on the side of the main magnet 62 away from the yoke 61, the side magnetic circuit includes a side magnet 63 and a side magnetic conductive plate arranged on the side of the side magnet 63 away from the yoke 61, a frame 65 is installed on the side magnetic circuit, a diaphragm is installed on the frame 65, and the fixing part of the diaphragm is connected to the The frame 65 is connected, and the voice coil 66 extends from the diaphragm to the yoke 61 and extends into the magnetic gap. The voice coil 66 surrounds the central magnetic conductive plate 64 in the middle; the folding ring 2 of the diaphragm is provided with crests 4 and troughs 5, and the center lines of the crests 4 and the troughs 5 are perpendicular to the tangent of the folding ring at that location. The fluctuation amplitude of the crests 4 and the troughs 5 is much smaller than the inner diameter of the folding ring 2, and will not affect the main structure of the folding ring 2. The crests 4 and the troughs 5 form wrinkles on the folding ring 2, which reduces the stress of the folding ring 2, improves the folding of the diaphragm membrane, improves the high-frequency segmentation vibration, and increases the reliability margin.

[0045] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A diaphragm, characterized in that: The diaphragm body includes a central portion, a folded ring arranged around the periphery of the central portion, and a fixed portion located around the periphery of the folded ring. The folded ring is protruded toward one side of the central portion, and at least a portion of the folded ring has a wavy cross-section, with the crests and troughs of the folded ring extending along the circumference of the folded ring.

2. The diaphragm according to claim 1, characterized in that: The folding ring has a plurality of wave segments, the cross-section of the wave segments is wave-shaped, and the plurality of wave segments are arranged at intervals along the circumference of the folding ring.

3. The diaphragm according to claim 1, characterized in that: The cross sections of the folded rings are all wavy.

4. The diaphragm according to claim 1, characterized in that: The distance between any two adjacent wave peaks is equal.

5. The diaphragm according to claim 1, characterized in that: The distances between any two adjacent troughs are equal.

6. The diaphragm according to claim 1, characterized in that: The distances between any two adjacent wave crests and wave troughs are equal.

7. The diaphragm according to claim 1, characterized in that: Two adjacent wave crests are symmetrical with the midline of the wave trough as the center.

8. The diaphragm according to any one of claims 1 to 7, characterized in that: The folding ring is a circular folding ring or a square folding ring.

9. A loudspeaker, characterized in that: It comprises a diaphragm assembly and a magnetic circuit assembly, wherein the diaphragm assembly comprises a voice coil and a diaphragm according to any one of claims 1 to 8, wherein the voice coil is fixedly connected to the diaphragm, and the voice coil is located in the magnetic field generated by the magnetic circuit assembly.

10. The loudspeaker according to claim 9, characterized in that: The diaphragm assembly further includes a dome, which is fixed to the central portion of the diaphragm, and the voice coil is fixedly connected to the dome.

Images