Vibration system and loudspeaker

Abstract

The utility model discloses a vibration system and a loudspeaker, the vibration system comprises a vibrating diaphragm, a voice coil and a folding ring, and the voice coil is connected with one end of the vibrating diaphragm; the folding ring comprises a base ring made of a rubber material and a protection ring made of a polyurethane material, the base ring is provided with a plurality of through holes in a penetrating manner, the protection ring is stacked on the base ring and covers the through holes, and the base ring is connected with the other end of the vibrating diaphragm. When the folding ring is manufactured, a plurality of through holes penetrate through the base ring made of rubber materials, the base ring is made into a honeycomb structure so that the weight can be reduced, then the protection ring made of polyurethane materials is arranged on the base ring in an overlapped mode and covers the through holes, the protection ring has sealing performance, and the folding ring has the advantages of being small in weight, good in elasticity, good in damping effect and the like. Meanwhile, the phenomenon of wrinkling during large displacement is overcome, and the risks that the loudspeaker shakes to rub a ring, distortion is increased and the like are reduced; the folding ring integrates characteristics and advantages of two materials of polyurethane and rubber, is high in structural stability, has new creativity and is high in market competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeaker structures, in particular to a vibration system and a loudspeaker. Background Art

[0002] A loudspeaker is an electroacoustic transducer that radiates sound directly into free space. Its main radiating part, the cone, is the main vibrating device for radiating sound energy from the loudspeaker. The cone consists of a diaphragm and a folding ring connected to the diaphragm. The folding ring can ensure the axial movement of the cone along the loudspeaker. In addition to the commonly used cone materials, the folding ring can also be made of plastic, natural rubber, etc., which is bonded to the cone by heat pressing: the folding ring and the positioning support together form the mechanical structure of the loudspeaker vibration suspension system, providing compliance and support for the loudspeaker, and ensuring the axial vibration of the loudspeaker diaphragm; in particular, the folding ring is used by the loudspeaker to fix the diaphragm and control its movement, and has a restraining and shock-absorbing effect. It determines the mechanical damping and transient response of the loudspeaker to a certain extent, and affects the low-frequency reproduction capability of the loudspeaker.

[0003] At present, the materials of the common speaker folding rings on the market include PU, cloth, rubber and foam plastic, etc., which are generally formed by hot pressing or vulcanization of a single material. Among them, the PU folding ring has a small mass but poor elasticity, while the rubber folding ring has a fast elastic recovery and good damping effect, but it is too heavy. Obviously, the single characteristics of ordinary materials cannot meet the diversified performance requirements of speakers; and the folding ring made of the original single material has a too simple structure and no novelty, which is difficult to arouse the interest of consumers and has poor market competitiveness. Utility Model Content

[0004] The utility model aims to provide a vibration system and a loudspeaker to solve the problems that the folding ring of the existing loudspeaker is made of PU, cloth, rubber and foam plastic, etc., which are generally formed by hot pressing or vulcanization of a single material, wherein the folding ring of PU material has a small mass but poor elasticity, while the rubber folding ring has a fast elastic recovery and a good damping effect, but is too heavy. Obviously, the single characteristic of ordinary materials cannot meet the diversified performance requirements of loudspeakers; and the folding ring made of the original single material has an overly simple structure, no novelty, and is difficult to arouse the interest of consumers, and has poor market competitiveness.

[0005] The utility model provides a vibration system, comprising:

[0006] Diaphragm;

[0007] A voice coil connected to one end of the diaphragm;

[0008] The folding ring includes a base ring made of rubber material and a protective ring made of polyurethane material. The base ring is penetrated by a plurality of through holes. The protective ring is stacked on the base ring and covers each of the through holes. The base ring is connected to the other end of the diaphragm.

[0009] Furthermore, the vibration system also includes a first adhesive component, and the protective ring is bonded to the base ring through the first adhesive component.

[0010] Further, the base ring includes a first connecting portion, a first bending portion and a second connecting portion which are connected in sequence, the first connecting portion is a planar structure arranged in a ring, the cross-section of the first bending portion is an arc structure, the second connecting portion is an inclined surface structure arranged in a ring, each of the through holes is arranged on the first bending portion, the first connecting portion, the first bending portion and the second connecting portion are all connected to the protective ring, and the second connecting portion is connected to the diaphragm.

[0011] Furthermore, the protective ring includes a third connecting portion, a second bent portion and a fourth connecting portion connected in sequence, the third connecting portion is a planar structure arranged in an annular manner, the cross-section of the second bent portion is an arc-shaped structure, the fourth connecting portion is an inclined surface structure arranged in an annular manner, the third connecting portion is fixed to the top of the first connecting portion, the second bent portion is fixed to the top of the first bent portion and covers each of the through holes, and the fourth connecting portion is fixed to the top of the second connecting portion.

[0012] Furthermore, the vibration system also includes at least one second adhesive component, the diaphragm includes a first annular membrane and a second annular membrane integrally formed with the first annular membrane, the first annular membrane is connected to the base ring, the inner diameter of the first annular membrane gradually decreases from a side close to the base ring toward a side close to the second annular membrane, the inner diameter of the second annular membrane gradually increases from a side close to the first annular membrane toward a side away from the first annular membrane, and the first annular membrane and the second annular membrane are both connected to the voice coil through the second adhesive component.

[0013] Furthermore, the voice coil includes a skeleton and a coil wound on the outer wall of the skeleton, the first annular membrane and a part of the skeleton are combined to form a first accommodating groove, the second annular membrane and another part of the skeleton are combined to form a second accommodating groove, the first accommodating groove is connected to the second accommodating groove, the number of the second adhesive is one, one part of the second adhesive is located in the first accommodating groove, and the other part is located in the second accommodating groove.

[0014] Furthermore, the vibration system also includes a dust cap and a third adhesive component, and the dust cap is bonded to the voice coil through the third adhesive component.

[0015] The utility model also provides a loudspeaker, comprising a basin frame, a magnetic circuit system and the vibration system as described above, wherein the magnetic circuit system is fixed in the basin frame, the magnetic circuit system is provided with a magnetic gap, the base ring is connected to the basin frame, and the voice coil is partially inserted into the magnetic gap.

[0016] Furthermore, the magnetic circuit system includes a magnetic bowl, a permanent magnet and a pole core. The magnetic bowl is fixed in the basin frame. The magnetic bowl has a storage cavity. The permanent magnet is fixed in the storage cavity. The pole core is fixed to a side of the permanent magnet close to the diaphragm. After assembly, the permanent magnet and the pole core form the magnetic gap with the inner wall of the storage cavity.

[0017] Furthermore, the loudspeaker also includes a shock absorber for preventing the voice coil from moving laterally, one end of the shock absorber is connected to the voice coil, and the other end is connected to the basin frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] When making the folding ring of the utility model, firstly a base ring made of rubber material is passed through a plurality of through holes, and the base ring is made into a honeycomb structure to reduce weight, and then a protective ring made of polyurethane material is stacked on the base ring and covers the through holes, and the protective ring has sealing properties. The folding ring made in this way has the advantages of light weight, good elasticity and good damping effect, and at the same time overcomes the phenomenon of wrinkles occurring during large displacements, and reduces the risks of speaker shaking, rubbing and increased distortion, and the like. Moreover, the folding ring is formed by stacking a base ring made of rubber material and a protective ring made of polyurethane material, and the folding ring integrates the advantages of the characteristics of both polyurethane and rubber materials, has strong structural stability, is innovative, is easy to arouse the interest of consumers, and has strong market competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A cross-sectional view of a vibration system provided by an embodiment of the utility model;

[0021] Figure 2 for Figure 1 A local enlarged schematic diagram of the middle A;

[0022] Figure 3 A schematic diagram of the structure of a sound basin provided in an embodiment of the utility model;

[0023] Figure 4 for Figure 3 A cross-sectional view of

[0024] Figure 5 for Figure 3 Exploded diagram of

[0025] Figure 6A partial cross-sectional view of a loudspeaker provided in an embodiment of the utility model;

[0026] Figure 7 A cross-sectional view of the magnetic circuit system and the basin frame provided in an embodiment of the utility model after being combined.

[0027] In the figure:

[0028] 10. Vibration system; 11. First accommodating groove; 12. Second accommodating groove; 20. Diaphragm; 21. First annular membrane; 22. Second annular membrane; 30. Voice coil; 31. Skeleton; 32. Coil; 40. Folding ring; 41. Base ring; 411. Through hole; 412. First connecting part; 413. First bending part; 414. Second connecting part; 42. Protective ring; 421. Third connecting part; 422. Second bending part; 423. Fourth connecting part; 50. Sound basin; 60. Second adhesive member; 70. Dust cap; 80. Third adhesive member; 90. Basin frame; 100. Magnetic circuit system; 110. Magnetic gap; 200. Magnetic bowl; 210. Storage cavity; 300. Magnetic component; 310. Permanent magnet; 320. Pole core; 400. Shock absorber. DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0030] See also Figures 1 to 5 As shown, an embodiment of the utility model discloses a vibration system 10, which is applied to a loudspeaker. The vibration system 10 includes a diaphragm 20, a voice coil 30 and a folding ring 40. The diaphragm 20 is located between the folding ring 40 and the voice coil 30. One end of the diaphragm 20 is connected to the folding ring 40, and the other end of the diaphragm 20 is connected to the voice coil 30. The folding ring 40 and the diaphragm 20 are bonded together to form a sound cone 50 in the loudspeaker.

[0031] The folding ring 40 includes a base ring 41 made of rubber material and a protective ring 42 made of polyurethane material, polyurethane is abbreviated as PU, the base ring 41 is penetrated by a plurality of through holes 411, the protective ring 42 is stacked on the base ring 41 and covers the through holes 411, the base ring 41 is connected to the diaphragm 20, the folding ring 40 formed in this way has the advantages of light weight, good elasticity and good damping effect, and at the same time overcomes the phenomenon of wrinkles occurring during large displacement, reducing the risks of speaker shaking, rubbing and increased distortion; and the folding ring 40 has strong structural stability, is innovative, is easy to arouse the interest of consumers, and has strong market competitiveness.

[0032] The vibration system 10 also includes a first adhesive component, and the protective ring 42 is bonded to the base ring 41 through the first adhesive component. When the folded ring 40 is manufactured, the original rubber raw material can be first vulcanized into a base ring 41 with a honeycomb structure to reduce weight, and then the sealing property of the PU material is used to manufacture the protective ring 42. After that, the first adhesive component is applied between the base ring 41 made of rubber material and the protective ring 42 made of polyurethane material, and finally hot-pressed. In this embodiment, the folded ring 40 combines the advantages of the characteristics of polyurethane and rubber to form a new type of folded ring 40 for loudspeakers, which meets the performance requirements of the vibration system 10 in the loudspeaker, such as low weight, high mechanical damping and transient response. The first adhesive component is an adhesive.

[0033] In this embodiment, the vibration system 10 also includes a fourth adhesive component, and the base ring 41 includes a first connecting portion 412, a first bending portion 413 and a second connecting portion 414 connected in sequence. The first connecting portion 412 is a planar structure arranged in an annular manner, the cross-section of the first bending portion 413 is an arc structure, and the second connecting portion 414 is an inclined surface structure arranged in an annular manner. Each through hole 411 is arranged on the first bending portion 413, and the inner diameter of the first connecting portion 412 is greater than the outer diameter of the second connecting portion 414. The first connecting portion 412, the first bending portion 413 and the second connecting portion 414 are all connected to the protective ring 42 through the first adhesive component, and the second connecting portion 414 can be connected to the diaphragm 20 through the fourth adhesive component. The second connecting portion 414 and the first connecting portion 412 are arranged at an angle greater than 90 degrees, which can increase the contact area between the diaphragm 20 and the base ring 41 and prevent the diaphragm 20 from being separated from the folding ring 40 during vibration. The fourth adhesive component is an adhesive.

[0034] The through hole 411 may be triangular, circular, prismatic or polygonal in structure. In this embodiment, the through hole 411 is hexagonal. There are multiple through holes 411 distributed in two ring shapes. The shape and number of the through holes 411 may be set as needed.

[0035] The protective ring 42 includes a third connecting portion 421, a second curved portion 422 and a fourth connecting portion 423 which are connected in sequence. The third connecting portion 421 is a planar structure arranged in an annular shape. The cross section of the second curved portion 422 is an arc-shaped structure. The fourth connecting portion 423 is an inclined surface structure arranged in an annular shape. The third connecting portion 421 is fixed to the top of the first connecting portion 412 by a first adhesive. The second curved portion 422 is fixed to the top of the first curved portion 413 by a first adhesive and covers each through hole 411. The fourth connecting portion 423 is fixed to the top of the second connecting portion 414 by a first adhesive. The inner diameter of the third connecting portion 421 is greater than the outer diameter of the fourth connecting portion 423. The fourth connecting portion 423 and the third connecting portion 421 are arranged at an angle greater than 90 degrees. Of course, the protective ring 42 can also be fixed to the base ring 41 in other forms.

[0036] The vibration system 10 also includes at least one second adhesive component 60. The diaphragm 20 includes a first annular membrane 21 and a second annular membrane 22 integrally formed with the first annular membrane 21. The first annular membrane 21 is connected to the base ring 41. The inner diameter of the first annular membrane 21 gradually decreases from the side close to the base ring 41 to the side close to the second annular membrane 22. The inner diameter of the second annular membrane 22 gradually increases from the side close to the first annular membrane 21 to the side away from the first annular membrane 21. The first annular membrane 21 and the second annular membrane 22 are both connected to the voice coil 30 through the second adhesive component 60, thereby fixing the diaphragm 20 on the voice coil 30. The second adhesive component 60 is an adhesive.

[0037] The voice coil 30 includes a skeleton 31 and a coil 32 wound on the outer wall of the skeleton 31. The first annular membrane 21 and a part of the skeleton 31 are enclosed to form a first receiving groove 11, and the second annular membrane 22 and another part of the skeleton 31 are enclosed to form a second receiving groove 12. The first receiving groove 11 is connected to the second receiving groove 12. The number of the second adhesive 60 is one, one part of the second adhesive 60 is located in the first receiving groove 11, and the other part is located in the second receiving groove 12. When the sound basin 50 is bonded to the skeleton 31, a part of the second adhesive 60 can be injected into the first receiving groove 11 first, and then another part of the second adhesive 60 can be injected into the second receiving groove 12 in the opposite direction. At this time, the two second adhesives 60 are gathered together, so that fewer second adhesives 60 can be used to achieve the same contact area. Under the same contact area, the second adhesive 60 is used in a smaller amount, which reduces the production cost and the weight of the vibration system 10.

[0038] The vibration system 10 also includes a dust cap 70 and a third adhesive component 80. The dust cap 70 is bonded to the voice coil 30 through the third adhesive component 80. Of course, the dust cap 70 can also be fixed to the frame 31 of the voice coil 30 by threaded connection or clamping. The third adhesive component 80 is an adhesive.

[0039] Please read further Figure 1 , Figure 2 , Figures 5 to 7 The utility model also discloses a loudspeaker, including a basin frame 90, a magnetic circuit system 100 and the vibration system 10 as described above, wherein the magnetic circuit system 100 is fixed in the basin frame 90, and the magnetic circuit system 100 is provided with a magnetic gap 110, the base ring 41 is connected to the basin frame 90, and the voice coil 30 is partially inserted into the magnetic gap 110, and the magnetic circuit system 100 can generate a magnetic field in the magnetic gap 110, and when the voice coil 30 is energized and moves in the magnetic field under force, it drives the sound basin 50 and the dust cap 70 to perform piston motion together, and during the movement of the sound basin 50, the folding ring 40 acts as a control unit and the diaphragm 20 acts as a radiation unit to generate sound.

[0040] The magnetic circuit system 100 includes a magnetic bowl 200 and a magnetic assembly 300 . The magnetic bowl 200 is fixed in the basin frame 90 . The magnetic bowl 200 has a storage cavity 210 . The magnetic assembly 300 is fixed in the storage cavity 210 . The magnetic gap 110 is formed between the magnetic assembly 300 and the inner wall of the storage cavity 210 .

[0041] The magnetic assembly 300 includes a permanent magnet 310 and a pole core 320. The permanent magnet 310 is fixed in the storage cavity 210. The pole core 320 is fixed to a side of the permanent magnet 310 close to the diaphragm 20. The pole core 320 is made of a magnetic conductive material. After assembly, the above-mentioned permanent magnet 310 and pole core 320 form the magnetic gap 110 with the inner wall of the storage cavity 210. The pole core 320 plays a role of magnetic conductivity. It can transmit the magnetic lines of force emitted by the permanent magnet 310 and perpendicular to the pole core 320 to the magnetic bowl 200 in a direction parallel to the pole core 320, that is, perpendicular to the side wall of the magnetic bowl 200, so as to form a magnetic field between the permanent magnet 310 and the magnetic bowl 200 and increase the thickness of the magnetic circuit system 100.

[0042] The loudspeaker also includes a shock absorber 400 for preventing the voice coil 30 from moving laterally. One end of the shock absorber 400 is connected to the voice coil 30 and the other end is connected to the basin frame 90, thereby reducing the vibration amplitude of the sound basin 50 in the loudspeaker and preventing the sound basin 50 from being damaged.

[0043] The speaker assembly method includes the following steps:

[0044] Step S101, assembling the folding ring 40, first preparing a first adhesive, a base ring 41 made of rubber material, and a protective ring 42 made of polyurethane material, placing the base ring 41 made of rubber material in a specific mold, coating the first adhesive on its surface, and then placing the protective ring 42 made of polyurethane material on the first adhesive, and integrating the base ring 41 and the protective ring 42 by hot pressing to form the folding ring 40;

[0045] Step S102, assembling the vibration system 10, connecting one end of the diaphragm 20 to the base ring 41 on the folding ring 40 through the fourth adhesive, connecting the other end of the diaphragm 20 to the voice coil 30 through the second adhesive 60, and bonding the dust cap 70 to the voice coil 30 through the third adhesive 80;

[0046] Step S103, assembling the magnetic circuit system 100, fixing the permanent magnet 310 in the storage cavity 210, fixing the pole core 320 to a side of the permanent magnet 310 close to the diaphragm 20, and forming the magnetic gap 110 between the permanent magnet 310 and the pole core 320 and the inner wall of the storage cavity 210 after assembly;

[0047] Step S104, assembling the speaker, fixing the assembled magnetic circuit system 100 in the basket 90, then connecting one end of the shock absorber 400 to the voice coil 30 and the other end to the basket 90, and finally fixing the vibration system 10 on the basket 90, and the voice coil 30 in the vibration system 10 extends into the magnetic gap 110 of the magnetic circuit system 100.

[0048] To sum up, when the folding ring 40 of the utility model is manufactured, a base ring 41 made of rubber material is first penetrated with multiple through holes 411, and the base ring 41 is made into a honeycomb structure to reduce weight, and then a protective ring 42 made of polyurethane material is stacked on the base ring 41 and covers each through hole 411. The protective ring 42 has sealing properties. The folding ring 40 manufactured in this way has the advantages of light weight, good elasticity and good damping effect. At the same time, it also overcomes the phenomenon of wrinkles occurring during large displacements, and reduces the risks of speaker shaking, rubbing and increased distortion. The folding ring 40 is formed by stacking a base ring 41 made of rubber material and a protective ring 42 made of polyurethane material. The folding ring 40 combines the advantages of the characteristics of polyurethane and rubber materials, has strong structural stability, is innovative, is easy to arouse the interest of consumers, and has strong market competitiveness.

[0049] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A vibration system, characterized in that: include: Diaphragm; A voice coil connected to one end of the diaphragm; The folding ring includes a base ring made of rubber material and a protective ring made of polyurethane material. The base ring is penetrated by a plurality of through holes. The protective ring is stacked on the base ring and covers each of the through holes. The base ring is connected to the other end of the diaphragm.

2. The vibration system according to claim 1, characterized in that The vibration system further includes a first adhesive member, and the protection ring is bonded to the base ring through the first adhesive member.

3. The vibration system according to claim 1, characterized in that The base ring includes a first connecting portion, a first bending portion and a second connecting portion which are connected in sequence, the first connecting portion is a planar structure arranged in a ring, the cross-section of the first bending portion is an arc structure, the second connecting portion is an inclined surface structure arranged in a ring, each of the through holes is arranged on the first bending portion, the first connecting portion, the first bending portion and the second connecting portion are all connected to the protective ring, and the second connecting portion is connected to the diaphragm.

4. The vibration system according to claim 3, characterized in that The protective ring includes a third connecting portion, a second bent portion and a fourth connecting portion connected in sequence, the third connecting portion is a planar structure arranged in an annular manner, the cross-section of the second bent portion is an arc-shaped structure, the fourth connecting portion is an inclined surface structure arranged in an annular manner, the third connecting portion is fixed to the top of the first connecting portion, the second bent portion is fixed to the top of the first bent portion and covers each of the through holes, and the fourth connecting portion is fixed to the top of the second connecting portion.

5. The vibration system according to claim 1, characterized in that The vibration system also includes at least one second adhesive component, the diaphragm includes a first annular membrane and a second annular membrane integrally formed with the first annular membrane, the first annular membrane is connected to the base ring, the inner diameter of the first annular membrane gradually decreases from a side close to the base ring toward a side close to the second annular membrane, the inner diameter of the second annular membrane gradually increases from a side close to the first annular membrane toward a side away from the first annular membrane, and the first annular membrane and the second annular membrane are both connected to the voice coil through the second adhesive component.

6. The vibration system according to claim 5, characterized in that The voice coil includes a frame and a coil wound on the outer wall of the frame, the first annular membrane and a part of the frame are combined to form a first accommodating groove, the second annular membrane and another part of the frame are combined to form a second accommodating groove, the first accommodating groove is connected to the second accommodating groove, the number of the second adhesive is one, one part of the second adhesive is located in the first accommodating groove, and the other part is located in the second accommodating groove.

7. The vibration system according to claim 1, characterized in that The vibration system also includes a dust cap and a third adhesive component, and the dust cap is bonded to the voice coil through the third adhesive component.

8. A speaker, characterized in that: It comprises a basin frame, a magnetic circuit system and a vibration system as described in any one of claims 1 to 7, wherein the magnetic circuit system is fixed in the basin frame, the magnetic circuit system is provided with a magnetic gap, the base ring is connected to the basin frame, and the voice coil part is inserted into the magnetic gap.

9. The loudspeaker according to claim 8, characterized in that The magnetic circuit system includes a magnetic bowl, a permanent magnet and a pole core. The magnetic bowl is fixed in the basin frame. The magnetic bowl has a storage cavity. The permanent magnet is fixed in the storage cavity. The pole core is fixed to a side of the permanent magnet close to the diaphragm. After assembly, the permanent magnet and the pole core form the magnetic gap with the inner wall of the storage cavity.

10. The loudspeaker according to claim 8, characterized in that The loudspeaker further comprises a shock absorber for preventing the voice coil from moving laterally, wherein one end of the shock absorber is connected to the voice coil and the other end is connected to the basin frame.

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