A planar diaphragm for suppressing nonlinear vibration

Abstract

The present invention discloses a planar diaphragm for suppressing nonlinear vibrations, comprising an upper washer and a lower washer, a diaphragm assembly being disposed between the upper and lower washers, a groove being provided on the side of the upper and lower washers close to the diaphragm assembly, and a frequency modulation assembly being disposed inside the two grooves to increase the tension of the diaphragm assembly while ensuring the flatness of the diaphragm assembly; the diaphragm assembly comprising a planar diaphragm, the planar diaphragm comprising an A surface and a B surface disposed opposite each other, and the A surface of the planar diaphragm being disposed correspondingly to the upper washer. By providing the diaphragm assembly, the present invention can reduce the mechanical strength difference of the planar diaphragm in the direction intersecting with the conductor coil through a plurality of uniformly distributed reinforcing ribs of uniform length during use of the planar diaphragm, thereby more evenly dividing the vibration, reducing the nonlinear distortion caused by the nonlinear division of the vibration, and improving the use effect of the planar diaphragm.

Description

Technical Field

[0001] The present invention belongs to the technical field of planar diaphragms, and in particular relates to a planar diaphragm for suppressing nonlinear vibration. Background Art

[0002] A planar diaphragm speaker is a type of speaker, which usually includes a diaphragm plane diaphragm, a conductor structure and a magnetic circuit structure. The conductor structure is attached to the diaphragm plane diaphragm, and the magnetic circuit structure is arranged on one side of the diaphragm plane diaphragm. When an external signal current is connected to the conductor structure, the current flowing through the conductor structure cuts the magnetic flux lines of the magnetic circuit structure and generates Ampere force. The diaphragm plane diaphragm vibrates and makes sound under the action of the Ampere force.

[0003] The planar diaphragm and loudspeaker with publication number CN206728286U capable of suppressing nonlinear vibration reduce the nonlinear distortion caused by split vibration and improve the sound quality of the loudspeaker by providing reinforcing ribs with a direction different from that of the straight wire; the planar diaphragm loudspeaker with publication number CN109391881A adds a frequency modulation component that can move toward or away from the diaphragm component along its central axis and abut against the diaphragm component when moving toward the diaphragm, thereby increasing the tension of the diaphragm component, that is, the diaphragm component is in a taut state, so that the sound frequency of the diaphragm component after power is applied is increased. Moreover, according to actual needs, the tension of the diaphragm component can be gradually increased to obtain higher-frequency sound. However, the above two planar diaphragms still have the following problems during use;

[0004] 1. The planar diaphragm capable of suppressing nonlinear vibrations and the reinforcement ribs provided in the loudspeaker with publication number CN206728286U have different lengths. Although this can reduce the mechanical strength difference of the planar diaphragm in the direction intersecting the conductor coil to a certain extent, it cannot evenly divide the vibration, resulting in a poor effect in reducing the nonlinear distortion caused by the nonlinear division vibration.

[0005] 2. The frequency modulation component provided in the planar diaphragm speaker with publication number CN109391881A directly contacts the planar diaphragm, causing the planar diaphragm to deform directly, which easily affects the use effect and service life of the planar diaphragm.

[0006] Therefore, it is necessary to invent a planar diaphragm that suppresses nonlinear vibration to solve the above problems. Summary of the Invention

[0007] In view of the above problems, the present invention provides a planar diaphragm for suppressing nonlinear vibrations to solve the problems raised in the above background technology.

[0008] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a planar diaphragm for suppressing nonlinear vibrations, comprising an upper gasket and a lower gasket, a diaphragm assembly being arranged between the upper gasket and the lower gasket, grooves being provided on one side of the upper gasket and the lower gasket close to the diaphragm assembly, and frequency modulation components being provided inside the two grooves, which can increase the tension of the diaphragm assembly while ensuring the flatness of the diaphragm assembly.

[0009] Furthermore, the diaphragm assembly includes a planar diaphragm, the planar diaphragm includes an A surface and a B surface arranged opposite to each other, and the A surface of the planar diaphragm is arranged corresponding to the upper gasket, and the B surface of the planar diaphragm is arranged corresponding to the lower gasket. A conductor coil is arranged on the A surface, and the conductor coil covers the A surface of the planar diaphragm. The surface of the upper gasket is symmetrically provided with wiring ports for use with the conductor coil, and the two wiring ports are respectively arranged corresponding to the two free ends of the conductor coil. A plurality of reinforcing ribs of the same length are evenly laid on the A surface of the planar diaphragm, and the plurality of reinforcing ribs are evenly arranged between each circle of the conductor coil, and are arranged divergently with the center of the planar diaphragm as the center point.

[0010] Furthermore, the FM component includes a silicone rubber ring wrapped around the periphery of the planar diaphragm, and the silicone rubber ring is wrapped around the periphery of the planar diaphragm by stamping. A plurality of circular holes are evenly opened on the surface of the periphery of the planar diaphragm, and silicone rubber columns are provided inside the plurality of circular holes. The silicone rubber columns are formed when the silicone rubber raw material is squeezed into the plurality of circular holes when the silicone rubber ring and the planar diaphragm are stamped and formed, and are used to improve the tightness of the connection between the silicone rubber ring and the planar diaphragm. A limiting ring slightly thicker than the silicone rubber ring is fixedly sleeved on the periphery of the silicone rubber ring, and grooves for use with the limiting rings are provided on the peripheries of the upper gasket and the lower gasket.

[0011] Furthermore, the silicone rubber ring is evenly fixedly connected to a plurality of push blocks on one side close to the lower gasket, and the outer sides of the plurality of push blocks are arc-shaped, and the cross-sectional shape of the plurality of push blocks is a narrow gradually widening cone, the internal thread of the groove in the lower gasket is connected to an adjustment ring, and the adjustment ring is composed of an annular ring and an externally threaded tube arranged on the outer side of the annular ring, and the interior of the groove in the lower gasket is provided with a threaded groove for use with the external thread in the adjustment ring, the side of the adjustment ring close to the push block is evenly fixedly connected to a plurality of round pins for use with the push block, the side of the adjustment ring away from the push block is fixedly connected to a shift rod, and the surface of the lower gasket is provided with a through groove for use with the shift rod.

[0012] Furthermore, the silicone rubber ring and the right side away from the push block are evenly fixedly connected with multiple protruding plates, the outer sides of the multiple protruding plates are fixedly connected with memory springs, and the side of the multiple memory springs away from the protruding plates is fixedly connected to the inner wall of the groove in the upper gasket.

[0013] Furthermore, the plurality of memory springs are all in a regular wave shape, and the height of the external threaded tube in the adjustment ring is smaller than the height of the groove in the lower washer.

[0014] Furthermore, both ends of the inner sides of the plurality of push blocks are provided with convex strips for preventing the round pins from falling out, and the plurality of round pins are respectively arranged between the two convex strips on the inner sides of the plurality of push blocks.

[0015] Furthermore, the limiting ring is made of a hard material, and the limiting ring and the silicone rubber ring are designed as an integral whole.

[0016] Furthermore, the number of the push blocks and round pins is at least eight, the push blocks are arranged in a one-to-one correspondence with multiple memory springs, the through groove is an arc groove, and the inner or outer side of the through groove can be provided with a scale to prompt the user to rotate the adjustment ring.

[0017] The technical effects and advantages of the present invention are as follows:

[0018] 1. The present invention is provided with a diaphragm assembly, which can reduce the mechanical strength difference of the planar diaphragm in the direction of intersection with the conductor coil through multiple reinforcing ribs of uniform length and uniform distribution during the use of the planar diaphragm, thereby being able to more evenly divide the vibration, reduce the nonlinear distortion caused by nonlinear division of vibration, and improve the use effect of the planar diaphragm.

[0019] 2. The present invention is provided with a frequency modulation component, and when using the planar diaphragm, the elastic effect of the silicone rubber ring can be used to tighten or relax the planar diaphragm, increase or reduce the sound frequency of the planar diaphragm, and further improve the use effect of the planar diaphragm; by providing the silicone rubber ring, the deformation generated when the planar diaphragm is tightened or relaxed can be transferred to the silicone rubber ring, reducing the deformation of the planar diaphragm during frequency modulation, ensuring the use effect of the planar diaphragm, and extending the service life of the planar diaphragm.

[0020] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 Shows a front view and a rear view of an embodiment of the present invention;

[0023] Figure 2 Shows an exploded front view of an embodiment of the present invention;

[0024] Figure 3 Shows a disassembled rear view of an embodiment of the present invention;

[0025] Figure 4 shows a right sectional plan view of an embodiment of the present invention;

[0026] Figure 5 A partial cross-sectional view of a silicone rubber ring according to an embodiment of the present invention is shown;

[0027] Figure 6 A rear cross-sectional view of a lower gasket portion according to an embodiment of the present invention is shown;

[0028] Figure 7 It shows an enlarged schematic diagram of the structure of part A of an embodiment of the present invention;

[0029] Figure 8 It shows an enlarged schematic diagram of the structure of part B of an embodiment of the present invention;

[0030] In the figure: 1. Upper washer; 2. Lower washer; 3. Diaphragm assembly; 31. Planar diaphragm; 32. Side A; 33. Side B; 34. Conductor coil; 35. Wiring port; 36. Reinforcement rib; 4. Groove; 5. FM assembly; 51. Silicone rubber ring; 52. Round hole; 53. Silicone rubber column; 54. Limiting ring; 55. Slot; 56. Push block; 57. Adjusting ring; 58. Threaded groove; 59. Round pin; 60. Push rod; 61. Through slot; 62. Protruding plate; 63. Memory spring. DETAILED DESCRIPTION

[0031] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0032] The present invention provides a planar diaphragm for suppressing nonlinear vibration, such as Figures 1-8 As shown, it includes an upper gasket 1 and a lower gasket 2, a diaphragm assembly 3 is arranged between the upper gasket 1 and the lower gasket 2, and a groove 4 is opened on the side of the upper gasket 1 and the lower gasket 2 close to the diaphragm assembly 3. The inside of the two grooves 4 is provided with a frequency modulation assembly 5 that can increase the tension of the diaphragm assembly 3 while ensuring the flatness of the diaphragm assembly 3;

[0033] The diaphragm assembly 3 includes a planar diaphragm 31, which includes an A surface 32 and a B surface 33 arranged in opposite directions. The A surface 32 of the planar diaphragm 31 is arranged corresponding to the upper gasket 1, and the B surface 33 of the planar diaphragm 31 is arranged corresponding to the lower gasket 2. A conductor coil 34 is provided on the A surface 32, and the conductor coil 34 covers the A surface 32 of the planar diaphragm 31. The surface of the upper gasket 1 is symmetrically provided with wiring ports 35 for use with the conductor coil 34, and the two wiring ports 35 are respectively arranged corresponding to the two free ends of the conductor coil 34. A plurality of reinforcing ribs 36 of uniform length are evenly laid on the A surface 32 of the planar diaphragm 31, and the plurality of reinforcing ribs 36 are evenly arranged between each turn of the conductor coil 34 and are arranged in a divergent shape with the center of the planar diaphragm 31 as the center point;

[0034] By providing reinforcing ribs 36 of the same length between each turn of the conductor coil 34, the multiple reinforcing ribs 36 intersect with the conductor coil 34 without contacting it, thereby minimizing the difference in mechanical strength of the planar diaphragm in two directions. Furthermore, the multiple reinforcing ribs 36 are of uniform length and evenly distributed on multiple radii of the planar diaphragm 31 starting from the center of the circle, which can more directly and effectively divide the vibration.

[0035] By providing a diaphragm assembly 3, the present invention can reduce the mechanical strength difference of the planar diaphragm in the direction of intersection with the conductor coil 34 through multiple reinforcing ribs 36 of uniform length and uniform distribution during the use of the planar diaphragm, thereby being able to more evenly divide the vibration, reduce the nonlinear distortion caused by nonlinear division of vibration, and improve the use effect of the planar diaphragm.

[0036] like Figures 1-8 As shown, the FM assembly 5 includes a silicone rubber ring 51 wrapped around the periphery of the planar diaphragm 31. The silicone rubber ring 51 is wrapped around the periphery of the planar diaphragm 31 by stamping. A plurality of circular holes 52 are evenly opened on the surface of the periphery of the planar diaphragm 31. Silicone rubber columns 53 are provided inside the plurality of circular holes 52. The silicone rubber columns 53 are formed by squeezing the silicone rubber material into the plurality of circular holes 52 during the stamping of the silicone rubber ring 51 and the planar diaphragm 31. They are used to improve the tightness of the connection between the silicone rubber ring 51 and the planar diaphragm 31. A limiting ring 54, which is slightly thicker than the silicone rubber ring 51, is fixedly sleeved on the periphery of the silicone rubber ring 51. The peripheries of the upper gasket 1 and the lower gasket 2 are both provided with slots 55 for use with the limiting ring 54.

[0037] A plurality of push blocks 56 are evenly fixedly connected to one side of the silicone rubber ring 51 close to the lower gasket 2, and the outer sides of the plurality of push blocks 56 are all arc-shaped, and the cross-sectional shape of the plurality of push blocks 56 is a tapered shape from narrow to wide. The internal thread of the groove 4 in the lower gasket 2 is connected to an adjusting ring 57, and the adjusting ring 57 consists of an annular ring and an externally threaded tube arranged on the outer side of the annular ring. The interior of the groove 4 in the lower gasket 2 is provided with a threaded groove 58 used in conjunction with the external thread in the adjusting ring 57. A plurality of round pins 59 used in conjunction with the push block 56 are evenly fixedly connected to the side of the adjusting ring 57 close to the push block 56, and a shift rod 60 is fixedly connected to the side of the adjusting ring 57 away from the push block 56. A through groove 61 used in conjunction with the shift rod 60 is provided on the surface of the lower gasket 2.

[0038] The silicone rubber ring 51 and the right side away from the push block 56 are evenly fixedly connected with a plurality of protruding plates 62. The outer sides of the plurality of protruding plates 62 are fixedly connected with memory springs 63. The sides of the plurality of memory springs 63 away from the protruding plates 62 are fixedly connected to the inner wall of the groove 4 in the upper gasket 1.

[0039] The plurality of memory springs 63 are all in a regular wave shape, and the height of the external threaded tube in the adjustment ring 57 is smaller than the height of the groove 4 in the lower washer 2;

[0040] Both ends of the inner sides of the plurality of push blocks 56 are provided with convex strips for preventing the round pins 59 from falling out, and the plurality of round pins 59 are respectively provided between the two convex strips on the inner sides of the plurality of push blocks 56;

[0041] The limiting ring 54 is made of a hard material, and the limiting ring 54 and the silicone rubber ring 51 are designed as an integral whole;

[0042] There are at least eight push blocks 56 and round pins 59. The push blocks 56 are arranged in a one-to-one correspondence with the plurality of memory springs 63. The through slot 61 is an arc-shaped slot, and a scale (not shown) can be provided on the inside or outside of the through slot 61 to prompt the user to rotate the adjustment ring 57.

[0043] When the vibration frequency of the planar diaphragm needs to be adjusted, the adjusting ring 57 can be rotated by the lever 60 to move the lever block inside the through groove 61, so that the adjusting ring 57 can move inside the groove 4 in the lower gasket 2 through the connection with the inner threaded groove 58 of the groove 4 in the lower gasket 2, approaching the silicone rubber ring 51 or away from the silicone rubber ring 51 by a certain distance (since the rotation angle of the adjusting ring 57 is small, the moving distance is also small), thereby driving the multiple round pins 59 to rotate through the adjusting ring 57. When the vibration frequency needs to be increased, the adjusting ring 57 drives the round pins 59 to rotate forward, and through the interference with the multiple push blocks 56, pushes the multiple push blocks 56 away from the planar diaphragm. , thereby using multiple push blocks 56 to pull the silicone rubber ring, and causing a certain deformation of the silicone rubber ring 51 under the action of its own elastic force, so that the silicone rubber ring 51 tightens the planar diaphragm to increase the tension of the planar diaphragm, thereby increasing the sound frequency of the planar diaphragm after power is applied. When it is necessary to reduce the vibration frequency, the adjustment ring 57 drives the multiple round pins 59 to reverse to release the resistance of the multiple round pins 59 to the push blocks 56. At this time, the silicone rubber ring 51 contracts under the action of its own elastic force and drives the multiple push blocks 56 to return to their original position, releasing the tightening effect of the silicone rubber ring 51 on the planar diaphragm, reducing the tension of the planar diaphragm, and thus reducing the sound frequency of the planar diaphragm after power is applied.

[0044] While the planar diaphragm is tightened by the silicone rubber ring 51, the multiple convex plates 62 squeeze the multiple memory springs 63 during the deformation of the silicone rubber ring 51. When the silicone rubber ring 51 contracts under its own elastic force, the memory springs 63, under their own restoring action, help push the silicone rubber ring 51 to contract and return to its original position through the convex plates 62, thereby preventing the silicone rubber ring 51 from being difficult to contract and return to its original position, thereby ensuring the stability of the frequency modulation component 5.

[0045] During the above operation, the specific position of the lever 60 in the through slot 61 can be determined by observing the scale (not shown) provided on one side of the through slot 61, thereby accurately controlling the sound frequency of the diaphragm assembly 3;

[0046] By providing a frequency modulation component 5, the present invention can utilize the elastic effect of the silicone rubber ring 51 to tighten or relax the planar diaphragm when using the planar diaphragm, increase or reduce the sound frequency of the planar diaphragm, and further improve the use effect of the planar diaphragm; by providing the silicone rubber ring 51, the deformation generated when the planar diaphragm is tightened or relaxed can be transferred to the silicone rubber ring 51, reducing the deformation of the planar diaphragm generated during frequency modulation, ensuring the use effect of the planar diaphragm, and extending the service life of the planar diaphragm.

[0047] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A planar diaphragm for suppressing nonlinear vibration, comprising an upper washer (1) and a lower washer (2), characterized in that: A diaphragm assembly (3) is provided between the upper washer (1) and the lower washer (2); grooves (4) are provided on one side of the upper washer (1) and the lower washer (2) close to the diaphragm assembly (3); and frequency modulation assemblies (5) for increasing the tension of the diaphragm assembly (3) while ensuring the flatness of the diaphragm assembly (3) are provided inside the two grooves (4); The diaphragm assembly (3) includes a planar diaphragm (31), the planar diaphragm (31) includes an A surface (32) and a B surface (33) that are arranged in opposite directions, and the A surface (32) of the planar diaphragm (31) is arranged corresponding to the upper gasket (1), and the B surface (33) of the planar diaphragm (31) is arranged corresponding to the lower gasket (2), and a conductor coil (34) is arranged on the A surface (32), and the conductor coil (34) covers the A surface (32) of the planar diaphragm (31). The surface of the upper washer (1) is symmetrically provided with connection ports (35) for use with the conductor coil (34), and the two connection ports (35) are respectively arranged corresponding to the two free ends of the conductor coil (34). A plurality of reinforcing ribs (36) of uniform length are evenly laid on the A surface (32) of the planar diaphragm (31), and the plurality of reinforcing ribs (36) are evenly arranged between each turn of the conductor coil (34) and are arranged in a divergent shape with the center of the planar diaphragm (31) as the center point. The frequency modulation component (5) includes a silicone rubber ring (51) wrapped around the periphery of the planar diaphragm (31), the silicone rubber ring (51) is wrapped around the periphery of the planar diaphragm (31) by stamping, a plurality of circular holes (52) are uniformly opened on the surface of the periphery of the planar diaphragm (31), and a silicone rubber column (53) is provided inside each of the plurality of circular holes (52), the silicone rubber column (53) is formed by the silicone rubber material being squeezed into the plurality of circular holes (52) when the silicone rubber ring (51) and the planar diaphragm (31) are stamped and formed, a limiting ring (54) thicker than the silicone rubber ring (51) is fixedly sleeved on the periphery of the silicone rubber ring (51), and a slot (55) used in conjunction with the limiting ring (54) is provided on the periphery of the upper gasket (1) and the lower gasket (2); The side of the silicone rubber ring (51) close to the lower washer (2) is evenly fixedly connected with a plurality of push blocks (56), and the outer sides of the plurality of push blocks (56) are all arc-shaped. The cross-sectional shape of the plurality of push blocks (56) is a tapered shape that gradually widens from narrow. The internal thread of the groove (4) in the lower washer (2) is connected with an adjustment ring (57), and the adjustment ring (57) is composed of an annular ring and an external threaded tube arranged on the outer side of the annular ring. The interior of the groove (4) in the lower washer (2) is provided with a thread groove (58) used in conjunction with the external thread in the adjustment ring (57). The side of the adjustment ring (57) close to the push block (56) is evenly fixedly connected with a plurality of round pins (59) used in conjunction with the push block (56). The side of the adjustment ring (57) away from the push block (56) is fixedly connected with a shift rod (60). The surface of the lower washer (2) is provided with a through groove (61) used in conjunction with the shift rod (60).

2. The planar diaphragm for suppressing nonlinear vibration according to claim 1, characterized in that: The silicone rubber ring (51) and the right side away from the push block (56) are evenly fixedly connected with a plurality of convex plates (62), the outer sides of the plurality of convex plates (62) are fixedly connected with memory springs (63), and the sides of the plurality of memory springs (63) away from the convex plates (62) are fixedly connected to the inner wall of the groove (4) in the upper gasket (1).

3. The planar diaphragm for suppressing nonlinear vibration according to claim 2, characterized in that: The plurality of memory springs (63) are all in a regular wave shape, and the height of the external threaded tube in the adjustment ring (57) is smaller than the height of the groove (4) in the lower washer (2).

4. The planar diaphragm for suppressing nonlinear vibration according to claim 1, wherein: Both ends of the inner sides of the plurality of push blocks (56) are provided with convex strips for preventing the round pins (59) from falling out, and the plurality of round pins (59) are respectively arranged between the two convex strips on the inner sides of the plurality of push blocks (56).

5. The planar diaphragm for suppressing nonlinear vibration according to claim 1, characterized in that: The limiting ring (54) is made of a hard material, and the limiting ring (54) and the silicone rubber ring (51) are designed as an integral whole.

6. The planar diaphragm for suppressing nonlinear vibration according to claim 2, characterized in that: The number of the push blocks (56) and the round pins (59) is at least eight, the push blocks (56) and the plurality of memory springs (63) are arranged in a one-to-one correspondence, the through slot (61) is an arc-shaped slot, and a scale is provided on the inner side or the outer side of the through slot (61) for prompting the user to rotate the adjustment ring (57).

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