Voice coil convenient to disassemble and assemble

Abstract

The invention discloses a voice coil convenient to disassemble and assemble, which comprises a magnetic circuit assembly, a vibration assembly and a support assembly, and is characterized in that the support assembly is used for realizing fixation between the magnetic circuit assembly and the vibration assembly; the magnetic circuit assembly is used for providing a magnetic field for the vibration assembly and comprises a T iron, an annular magnet and a gasket, an axis boss of the T iron penetrates through an axis hole of the annular magnet and an axis hole of the gasket in the axial direction, a gap is formed between the axis hole and the boss, and the vibration assembly is used for achieving sound production vibration. According to the voice coil, the whole-circle gluing mode of the voice coil body and the voice cone shaft hole is abandoned, the fins distributed in the annular array are attached and bonded to the surface of the voice cone, the fins can be separated only by locally softening the glue layers of the fins during disassembly, the voice coil does not need to be stripped violently, and the problems that the voice cone shaft hole deforms and the glue layers remain due to disassembly of the voice coil are effectively avoided; the process of polishing and repairing the shaft hole in traditional maintenance is omitted, and the tedious operation that sundries need to be filled to prevent glue from falling off during shaft hole polishing when a new voice coil is installed is also avoided.

Description

Technical Field

[0001] This invention relates primarily to the field of voice coil technology, specifically to a voice coil that is easy to install and disassemble. Background Technology

[0002] The voice coil is the core driving component of a moving-coil electroacoustic transducer. It is typically formed by winding enameled wire onto a frame to create a winding structure. Some voice coils are accompanied by auxiliary components such as lead wires, insulation layers, and positioning parts. Its working principle is based on the Ampere force effect: when an audio electrical signal is passed through the voice coil winding, the voice coil, located in the magnetic field of the permanent magnet, generates an electromagnetic driving force corresponding to the signal frequency and amplitude. This force, in turn, drives the diaphragm fixed to it to reciprocate mechanically, ultimately converting the electrical signal into a sound wave signal.

[0003] The application scenarios of voice coils rely entirely on their core function of electromechanical energy conversion, covering all devices that use the dynamic coil transducer principle. The most mainstream application scenarios are loudspeakers and headphones, where the voice coil serves as the core driving component that determines the sound performance of the device. In loudspeaker structures, the coil and spider outside the voice coil frame are the two most vulnerable core components, especially the voice coil. However, the existing structure has obvious defects in the connection design of these two components and related components: the connection between the voice coil body and the cone, the connection between the inner side of the spider and the outer wall of the voice coil, and the connection between the bottom of the spider and the frame are all fixed by 504 glue around the whole circle, without any modular and detachable structure.

[0004] This connection method presents numerous problems during disassembly and repair: When the voice coil or spider is damaged and needs replacement, the dust cover must first be removed using an adhesive remover, and then the adhesive layer between the voice coil and the cone shaft hole must be forcibly peeled off. This process not only easily leads to incomplete disassembly due to adhesive residue, but also directly causes irreversible deformation or damage to the cone shaft hole area. When installing a new voice coil, due to old adhesive residue or shaft hole deformation, the cone shaft hole must be ground and repaired. The debris generated during grinding is very likely to fall into the core area of ​​the magnetic circuit composed of the T-iron, toroidal magnet, and gasket. Therefore, it is necessary to temporarily seal the shaft hole area of ​​the magnetic circuit components with tape, and remove the tape after installation. At the same time, to prevent adhesive from falling into the magnetic circuit area when installing a new voice coil, it is also necessary to fill the gaps with materials such as toilet paper to protect the outer wall of the voice coil and the shaft hole of the cone. This increases the repair process and time cost, reduces repair efficiency, and places stringent requirements on the operating skills and technical experience of the repair personnel. Summary of the Invention

[0005] This invention addresses the problem of overly simplistic solutions in existing technologies by providing a voice coil that is easy to install and remove. This solves the problem mentioned in the background section where existing voice coils, cones, spiders, and frames are all bonded together with 504 glue. This method necessitates forceful removal of vulnerable components like the voice coil and spider, easily causing deformation and damage to the cone shaft hole and leaving glue residue. Furthermore, installing a new voice coil requires grinding and repairing the shaft hole, as well as additionally sealing the magnetic circuit area and filling it with protective materials, significantly increasing maintenance procedures and time costs. It also places stringent demands on the skill and experience of maintenance personnel.

[0006] The technical solution adopted by the present invention to solve the above-mentioned technical problems is as follows: A voice coil that is easy to assemble and disassemble includes a magnetic circuit assembly, a vibration assembly, and a support assembly, wherein the support assembly is used to fix the magnetic circuit assembly and the vibration assembly.

[0007] The magnetic circuit assembly is used to provide a magnetic field for the vibration assembly, and includes a T-iron, an annular magnet, and a gasket. The axial boss of the T-iron passes through the axial hole of the annular magnet and the gasket, and a gap is formed between the axial hole and the boss.

[0008] The vibration assembly is used to achieve sound vibration and includes a voice coil body, a spider and a cone. One end of the voice coil body is inserted into the gap of the boss side of the T-iron shaft, and the gap provides room for the reciprocating vibration of the voice coil body.

[0009] The voice coil body includes a skeleton and a coil wound on the outer wall of the skeleton. The outer wall of the skeleton of the voice coil body has an inner edge ring that slides, and the inner wall of the skeleton of the voice coil body has a guide strip fixed along the axial direction. A wing is fixedly connected to one end of the skeleton. The inner edge ring is used to fix the upper surface of the edge of the inner diameter through hole of the spider. The guide strip is used to cooperate with the corresponding groove on the outer wall of the boss of the T-iron to provide guidance for the reciprocating vibration of the voice coil body. The wing is used to be bonded to the corresponding position on the surface of the cone.

[0010] Furthermore, the support assembly includes a frame and a rim strip. The surface of the frame is provided with an annular support member for supporting the lower surface of the edge of the cone with the largest diameter. The rim strip is provided with a locking groove that matches the annular support member of the frame, and the rim strip is detachably fixed to the frame by screws. The edge of the cone is sandwiched between the annular support member of the frame and the locking groove of the rim strip.

[0011] Furthermore, the top of the annular magnet and the pad are sequentially fitted onto the upper surface of the T-iron from top to bottom, and the three are coaxially arranged. The pad and the surface of the basin frame are provided with matching positioning slots, and the bottom of the basin frame and the surface of the pad are detachably connected by screws passing through the slots.

[0012] Furthermore, the surface of the frame is provided with an outer ring in the plane area corresponding to the penetrating voice coil body. The outer ring is detachable from the surface of the frame and is a ring-shaped component with a hollow structure in the middle, used to fix it to the upper surface edge at the edge of the outer diameter of the spring. In addition to the opening position for the screw to pass through, the outer ring is provided with a strip-shaped friction-increasing structure at the contact position corresponding to the spring.

[0013] Furthermore, the spider is composed of at least three circular components bonded together. The spider has multiple through-hole structures arranged in a ring array on one side of its surface facing the voice coil body. The edge of the through-hole in the inner diameter of the spider and the inner edge ring are detachably fixed by wrapping and binding with high-temperature resistant insulating fiberglass rope passing through the through-hole structure. The diameters of the upper inner edge ring and the lower inner edge ring are both larger than the diameter of the cone shaft hole.

[0014] Furthermore, the guide strip is integrally formed with the voice coil body skeleton and is distributed in an equiangular ring array along the inner wall of the skeleton with the voice coil body axis as the center.

[0015] Furthermore, the wing is a thin sheet structure, and the wing is distributed in a ring array on the inner wall of the voice coil body skeleton near one end of the cone. The other end of the wing is fixed to the corresponding position on the surface of the cone by external adhesive coating.

[0016] Furthermore, the cone is a tapered part that is wider at the top and narrower at the bottom. A dust cover is bonded to the surface of the shaft hole for mounting the voice coil body. The dust cover is a hollow circular structure that gradually narrows from bottom to top. The top of the skeleton of the voice coil body abuts against the corresponding position in the hollow interior of the dust cover.

[0017] Furthermore, an insulated lead wire extends from the outer wall of the voice coil body skeleton, passes through the corresponding wire hole on the spring coil surface, and is detachably connected to the terminal block that is later installed on the surface of the frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention addresses the problem that traditional loudspeakers use 504 glue to bond the voice coil and cone, spider and voice coil, and frame, making disassembly of easily damaged components such as the voice coil and spider difficult. This design adopts a modular structure with mechanical connection and locally controllable bonding, fundamentally avoiding the drawbacks of traditional repairs. The voice coil body abandons the method of bonding the entire ring to the cone shaft hole, and instead uses a ring array of fins to bond to the cone surface. During disassembly, only the adhesive layer of the fins needs to be locally softened for separation, without the need for forceful peeling of the voice coil. This effectively avoids the problems of cone shaft hole deformation and adhesive residue caused by voice coil removal, eliminating the need for shaft hole grinding and repair in traditional repairs, and also avoiding the tedious operation of filling the shaft hole with debris to prevent glue from falling off when installing a new voice coil.

[0019] 2. The spider of this invention adopts a glue-free fixing structure with inner edge ring fiberglass rope binding and outer edge ring screw tightening, replacing the traditional glued connection between the spider and the voice coil frame and the frame. When disassembling, the spider can be removed by cutting the fiberglass rope and loosening the outer edge ring screw. No glue residue will remain on the surface of the frame, and there is no need to use glue remover for cleaning. The cone is fixed by the edge strip and the screw of the frame. The dust cover is only partially bonded to the surface of the cone. The disassembly of both greatly reduces the difficulty of maintenance and time cost.

[0020] 3. Simultaneously, the fins distributed in a ring array are made of glass fiber reinforced plastic, the same material as the voice coil skeleton, and are bonded to the PP cone at multiple points and evenly. This disperses the connection stress between the voice coil and the cone along the circumferential direction, ensuring synchronous deformation of the cone's vibrating surface during the axial reciprocating vibration of the voice coil. The guide strip integrally molded on the inner wall of the voice coil skeleton precisely matches the T-iron boss groove, limiting the radial offset of the voice coil and ensuring efficient transmission of electromagnetic driving force. The strip-shaped friction-enhancing structure on the outer ring contact surface of the spider prevents slippage during spider vibration. Combined with the reset characteristics of the highly elastic polyester fiber material, it ensures stable radial positioning and axial reset functions of the spider, further improving the consistency of the speaker's full-frequency sound output.

[0021] 4. On the one hand, the modular, glue-free disassembly and assembly design avoids the structural damage to components such as the cone and spider caused by traditional violent disassembly and grinding repairs, preserving the original precision of the relevant fixed components to the greatest extent and preventing the problem of acoustic performance degradation after repair from the source; on the other hand, the coordination between relevant components and the limiting structure can ensure that the voice coil and spider can still maintain good coaxiality and vibration consistency after multiple disassembly and maintenance. This synergistic effect reduces the maintenance cost of the equipment and extends the service life of the loudspeaker.

[0022] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall assembly structure of the loudspeaker of the present invention; Figure 2 This is a schematic diagram of the magnetic circuit assembly structure of the present invention; Figure 3 This is a schematic diagram of the vibration component structure of the present invention; Figure 4 This is a schematic diagram of the supporting component structure of the present invention; Figure 5 This is a schematic diagram of the assembly structure of the basin frame and the edge strip of the present invention; Figure 6 This is a schematic diagram of the basin frame structure of the present invention; Figure 7 This is a schematic diagram of the voice coil body structure of the present invention.

[0024] Numbering on the map: 1. Magnetic circuit assembly; 2. Vibration assembly; 3. Support assembly; 4. T-iron; 5. Ring magnet; 6. Gasket; 7. Voice coil body; 71. Inner rim ring; 72. Guide strip; 73. Wing; 8. Spider; 9. Cone; 10. Dust cover; 11. Frame; 111. Outer rim ring; 12. Edge pressing strip. Detailed Implementation

[0025] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the present invention. However, the present invention can be implemented in different forms and is not limited to the embodiments described in the text. Rather, these embodiments are provided to make the disclosure of the present invention more thorough and complete.

[0026] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0027] Please refer to the appendix carefully. Figure 1-7 A voice coil that is easy to assemble and disassemble includes a magnetic circuit assembly 1, a vibration assembly 2 and a support assembly 3, wherein the support assembly 3 is used to fix the magnetic circuit assembly 1 and the vibration assembly 2.

[0028] The magnetic circuit assembly 1 is used to provide a magnetic field for the vibration assembly 2, including a T-iron 4, an annular magnet 5 and a pad 6. The axial boss of the T-iron 4 passes through the axial hole of the annular magnet 5 and the pad 6, and a gap is formed between the axial hole and the boss.

[0029] The vibration assembly 2 is used to achieve sound vibration, including a voice coil body 7, a spider 8 and a cone 9. One end of the voice coil body 7 is fitted with a gap on the side of the boss on the axis of the T iron 4, and the gap provides room for the reciprocating vibration of the voice coil body 7.

[0030] The voice coil body 7 includes a skeleton and a coil wound on the outer wall of the skeleton. An inner edge ring 71 slides on the outer wall of the skeleton of the voice coil body 7. A guide strip 72 is fixed along the axial direction on the inner wall of the skeleton of the voice coil body 7. A wing 73 is fixedly connected to one end of the skeleton. The inner edge ring 71 is used to fix it on the upper surface of the edge of the inner diameter through hole of the spider 8. The guide strip 72 is used to cooperate with the corresponding groove on the outer wall of the boss of the T iron 4 to provide guidance for the reciprocating vibration of the voice coil body 7. The wing 73 is used to be bonded to the corresponding position on the surface of the cone 9.

[0031] In this embodiment, as Figure 4 and Figure 5As shown, the support assembly 3 includes a frame 11 and a pressing strip 12. The surface of the frame 11 is provided with an annular support member, which is used to support the lower surface of the edge of the maximum diameter of the cone 9. The pressing strip 12 is provided with a locking groove that matches the annular support member of the frame 11, and the pressing strip 12 is detachably and fixedly connected to the frame 11 by screws. The edge of the cone 9 is sandwiched between the annular support member of the frame 11 and the locking groove of the pressing strip 12.

[0032] Through the above structure, the annular support on the surface of the frame 11 provides stable support for the edge of the cone 9 with the largest diameter. The edge strip 12 is precisely matched with the annular support through the matching groove and is detachably fixed with the help of screws, so that the edge of the cone 9 is stably clamped between the two. The reliable assembly of the cone 9 is achieved by mechanical clamping, which not only ensures the support stability of the cone 9 when it vibrates, but also allows the edge strip 12 to be quickly removed with the removal screws, so as to achieve non-destructive disassembly and assembly of the cone 9.

[0033] In this embodiment, as Figure 1 and Figure 2 As shown, the top of the annular magnet 5 and the pad 6 are sequentially fitted onto the upper surface of the T-iron 4 from top to bottom. The three are coaxially arranged and fixedly connected. The pad 6 and the surface of the basin frame 11 are provided with matching positioning slots. The bottom of the basin frame 11 and the surface of the pad 6 are detachably connected by screws passing through the slots.

[0034] Through the above structure, the coaxial sleeve assembly method can ensure the uniformity of the magnetic field distribution of the magnetic circuit assembly 1, improve the transmission efficiency of electromagnetic driving force, and ensure the stability of the speaker's acoustic performance. Compared with the traditional glued fixing method of the magnetic circuit assembly 1 and the frame 11, the detachable screws can realize the quick disassembly and individual replacement of the magnetic circuit assembly 1, further improving the overall modular maintenance performance of the speaker.

[0035] In this embodiment, as Figure 3 and Figure 4 As shown, the surface of the frame 11 has an outer edge ring 111 in the plane area corresponding to the penetrating voice coil body 7. The outer edge ring 111 is detachable from the surface of the frame 11. It is a ring-shaped component with a hollow structure in the middle, which is used to fix it to the upper surface edge of the outer diameter edge of the spider 8. In addition to the opening position for screws to pass through, the outer edge ring 111 has a strip-shaped friction-increasing structure at the contact position corresponding to the spider 8.

[0036] The spider 8 is composed of at least three circular parts bonded together. The spider 8 has multiple through holes arranged in a ring array on the side surface facing the voice coil body 7. The edge of the through hole in the inner diameter of the spider 8 and the inner edge ring 71 are detachably fixed by wrapping and binding with high-temperature resistant insulating fiberglass rope through the through hole structure. The diameter of the inner edge ring 71 is larger than the diameter of the axial hole of the cone 9.

[0037] Through the above structure, the spider 8 is made of high-elasticity polyester fiber, which has both excellent fatigue resistance and deformation recovery capability. It abandons the traditional method of directly gluing the spider 8 to the outer wall of the voice coil frame and the surface of the frame 11. Instead, it adopts a detachable fixing structure with inner edge ring 71 binding and outer edge ring 111 clamping screws through and tightening. The outer edge ring 111 is positioned and screwed by the unique circumferential groove structure of the frame 11. The strip-shaped friction-enhancing structure on the contact surface with the spider 8 can improve the contact friction and facilitate operation. It completely avoids the disadvantages of traditional glued fixing, which requires violent peeling and leaves glue residue on the surface of the frame 11. At the same time, each screw point corresponds to the position of the groove, and the installation method of the outer edge ring 111 relying on the circumferential groove of the frame 11 simplifies the disassembly and assembly process. In this embodiment, as Figure 3 and Figure 7 As shown, the guide bar 72 is integrally formed with the voice coil body 7 skeleton and is distributed in an equiangular ring array along the inner wall of the skeleton with the axis of the voice coil body 7 as the center.

[0038] With the above structure, compared with the axial movement achieved by the clearance fit in the traditional non-guided structure, the addition of the guide bar 72 can effectively limit the radial displacement of the voice coil body 7.

[0039] In this embodiment, as Figure 7 As shown, the wing 73 is a thin sheet structure, and the wing 73 is distributed in a ring array on one end of the inner wall of the voice coil body 7 skeleton near the cone 9. The other end of the wing 73 is fixed to the corresponding position on the surface of the cone 9 by external glue coating.

[0040] With the above structure, the wing 73 has a thickness of 0.3-0.5mm, a length of 8-12mm, and a width of 5-8mm, and can be distributed in 6-8 pieces. It is made of glass fiber reinforced plastic, consistent with the voice coil body 7 skeleton. It has strong adhesion to the material of the cone 9. It is bonded to the cone 9 with 504 glue at the end near the cone 9. It can replace the traditional connection method of directly gluing the outer wall of the voice coil skeleton to the shaft hole of the cone 9. It is bonded to the surface area of ​​the cone 9 by multiple ring-shaped wing pieces. During disassembly, it can avoid deformation and damage to the shaft hole of the cone 9 caused by violently peeling the voice coil from the shaft hole of the cone 9, or incomplete disassembly due to glue residue. It can also avoid the tedious operation and secondary damage of grinding and repairing the shaft hole. It can also avoid the tedious and inconvenient process of filling the shaft hole with debris to prevent glue from falling off when installing a new voice coil. It can improve maintenance efficiency and better protect the cone 9 and magnetic circuit assembly 1, ensuring the stable acoustic performance of the loudspeaker.

[0041] In this embodiment, as Figure 3 and Figure 5As shown, the cone 9 is a tapered part that is wider at the top and narrower at the bottom. A dust cover 10 is bonded to the surface of the shaft hole for mounting the voice coil body 7. The dust cover 10 is a hollow circular structure that gradually narrows from bottom to top. The top of the skeleton of the voice coil body 7 abuts against the corresponding position in the hollow interior of the dust cover 10.

[0042] An insulated lead wire extends from the outer wall of the voice coil body 7 frame, passes through the corresponding wire hole on the surface of the spring coil 8, and is detachably connected to the terminal block that is later installed on the surface of the frame 11.

[0043] Through the above structure, the cone 9 is made of polypropylene (PP) material, which has a certain degree of suitable hardness and flexibility. The dust cover 10 can effectively prevent dust from entering the interior and affecting the clearance fit between the voice coil body 7 and the magnetic circuit assembly 1. It can also achieve contact with the top of the voice coil body 7 through its hollow area, thereby achieving auxiliary positioning and improving the stability of the axial movement of the voice coil body 7.

[0044] The specific operation process of this invention is as follows: It should be noted that this solution only optimizes the modular structure of certain local positions of the voice coil body 7 and the T-iron 4, spider 8, and frame 11 used in conjunction with it, while the remaining components all follow the existing mature design.

[0045] When the voice coil body 7 is damaged, the replacement procedure is as follows: First, use an adhesive remover to treat the bonding area between the dust cover 10 and the cone 9, remove the dust cover 10, and then apply the adhesive remover to the bonding area between the wing 73 and the cone 9. After the adhesive layer softens, the wing 73 can be completely detached from the surface of the cone 9. Then, remove the fastening screws between the edge strip 12 and the frame 11 one by one, remove the edge strip 12, and use scissors to cut the high-temperature resistant insulating glass fiber rope that passes through the spring 8 through hole structure and is used to bind the inner edge ring 71 and the inner diameter edge of the spring 8. The damaged voice coil body 7 can then be removed.

[0046] Align the guide strip 72 on the inner wall of the new voice coil body 7 with the corresponding guide groove on the outer wall of the T-iron 4 boss, and place it smoothly. Ensure that the gaps between the voice coil body 7, T-iron 4, annular magnet 5, and gasket 6 are properly fitted. Then, use high-temperature resistant insulating glass fiber rope to pass through the through holes on the surface of the spring wave 8 and the inner edge ring 71, and wrap and bind it. Control the tension of the glass fiber rope during binding to avoid loosening.

[0047] Next, the edge of the cone 9 with the largest diameter is attached to the surface of the annular support on the frame 11. The locking groove of the edge strip 12 is aligned with the annular support on the frame 11 and locked in place. The edge strip 12 is then tightened with screws to fix the edge strip 12 to the frame 11, so that the edge of the cone 9 is stably clamped between the frame 11 and the edge strip 12. Then, 504 type adhesive is evenly applied to the surface of the wing 73 and the wing 73 is attached to the surface of the cone 9. After the adhesive layer has cured, adhesive is finally applied to the edge of the dust cover 10 and it is covered and bonded to the surface of the cone 9 shaft hole on the outside of the wing 73 area to complete the dustproof assembly.

[0048] When the spider 8 needs to be replaced, first remove the fastening screws of the edge strip 12 and the frame 11 to release the clamping restriction of the edge strip 12 on the edge of the cone 9. Since the cone 9 is made of flexible material and the frame 11 has an operating slot along the circumference, the operator can remove the outer ring 111 used to fix the outer edge of the spider 8 through the small screw. At this time, the cone 9, dust cover 10, voice coil body 7 and spider 8 can be taken out of the frame 11 as a whole. Then, use scissors to cut the high temperature resistant insulating fiberglass rope binding the inner ring 71 and the spider 8, and the damaged spider 8 can be removed.

[0049] When installing the new spider 8, first thread the high-temperature resistant insulating fiberglass rope through the lower surface of the spider 8, wrap and tie it with the inner edge ring 71, and ensure tension. After the assembly is completed, put the outer edge ring 111 on the upper surface of the outer diameter edge of the spider 8, so that it is on the same plane as the inner edge ring 71. Then, put the assembled voice coil body 7, spider 8, outer edge ring 111, along with the cone 9 and dust cover 10, into the frame 11 as a whole. At this time, it is necessary to ensure that the guide strip 72 on the inner wall of the voice coil body 7 skeleton is precisely matched with the guide groove on the outer wall of the T-iron 4 boss.

[0050] Then, the operator inserts a tool into the circumferential operating area of ​​the basin frame 11 and fastens the outer edge ring 111 to the pre-set positioning groove on the surface of the basin frame 11 with screws, thereby achieving reliable fixation of the outer diameter edge of the spring wave 8.

[0051] In actual use, after the audio current is connected to the coil on the outer wall of the voice coil body 7, an alternating electromagnetic driving force is generated under the action of the magnetic field. The voice coil body 7 moves in a reciprocating linear motion along the axial direction by the guide strip 72 on the inner wall of the skeleton and the guide groove on the outer wall of the T-iron 4 boss. During the reciprocating vibration of the voice coil body 7, the spring wave 8 plays a dual role of radial positioning and axial reset by relying on its own elastic characteristics. At the same time, the voice coil body 7 is fixed to the cone 9 by means of the wing 73, thereby driving the cone 9 to reciprocate axially in sync. The vibration of the cone 9 pushes the surrounding air to form sound waves with alternating density, and finally realizes the conversion of electrical signal to sound signal.

[0052] The present invention has been described by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A voice coil that is easy to install and remove, characterized in that: It includes a magnetic circuit assembly (1), a vibration assembly (2) and a support assembly (3), wherein the support assembly (3) is used to fix the magnetic circuit assembly (1) and the vibration assembly (2); The magnetic circuit assembly (1) is used to provide a magnetic field for the vibration assembly (2), including a T-iron (4), an annular magnet (5) and a pad (6). The axial boss of the T-iron (4) passes through the axial hole of the annular magnet (5) and the pad (6) along the axial direction, and a gap is formed between the axial hole and the boss. The vibration assembly (2) is used to realize sound vibration, including voice coil body (7), spider (8) and cone (9). One end of the voice coil body (7) is inserted into the gap of the boss side of the T iron (4) axis, and the gap provides the movement space for the reciprocating vibration of the voice coil body (7). The voice coil body (7) includes a skeleton and a coil wound on the outer wall of the skeleton. The outer wall of the skeleton of the voice coil body (7) has an inner edge ring (71) that slides. The inner wall of the skeleton of the voice coil body (7) has a guide strip (72) fixed along the axial direction. A wing (73) is fixedly connected to one end of the skeleton. The inner edge ring (71) is used to fix the upper surface of the inner diameter through hole of the spider (8). The guide strip (72) is used to cooperate with the corresponding slot of the boss outer wall of the T-iron (4) to provide guidance for the reciprocating vibration of the voice coil body (7). The wing (73) is used to bond to the corresponding position of the surface of the cone (9).

2. The voice coil that is easy to install and remove according to claim 1, characterized in that: The support assembly (3) includes a frame (11) and a pressing strip (12). The surface of the frame (11) is provided with an annular support member, which is used to support the lower surface of the maximum diameter edge of the cone (9). The pressing strip (12) is provided with a locking groove that is adapted to the annular support member of the frame (11), and the pressing strip (12) is detachably fixed to the frame (11) by screws. The edge of the cone (9) is sandwiched between the annular support member of the frame (11) and the locking groove of the pressing strip (12).

3. The voice coil that is easy to install and remove according to claim 1, characterized in that: The top of the annular magnet (5) and the pad (6) are sequentially fitted onto the upper surface of the T-iron (4) from top to bottom. The three are coaxially arranged and fixedly connected. The pad (6) and the surface of the basin frame (11) are provided with matching positioning slots. The bottom of the basin frame (11) and the surface of the pad (6) are detachably connected by screws through the slots.

4. The voice coil that is easy to install and disassemble according to claim 2, characterized in that: The surface of the frame (11) has an outer edge ring (111) in the plane area corresponding to the voice coil body (7). The outer edge ring (111) is detachable from the surface of the frame (11). It is a ring-shaped component with a hollow structure in the middle, which is used to fix it to the upper surface edge of the outer diameter edge of the spring (8). In addition to the opening position for screws to pass through, the outer edge ring (111) has a strip-shaped friction-increasing structure at the contact position corresponding to the spring (8).

5. The voice coil that is easy to install and disassemble according to claim 1, characterized in that: The spring (8) is composed of at least three circular parts bonded together. The spring (8) has multiple through holes arranged in a ring array on one side of the surface facing the voice coil body (7). The edge of the through hole in the inner diameter of the spring (8) and the inner edge ring (71) are detachably fixed by wrapping and binding with high-temperature resistant insulating fiberglass rope through the through hole structure. The diameter of the inner edge ring (71) is larger than the diameter of the axial hole of the cone (9).

6. The voice coil that is easy to install and remove according to claim 1, characterized in that: The guide strip (72) is integrally formed with the voice coil body (7) skeleton and is distributed in an equiangular ring array along the inner wall of the skeleton with the axis of the voice coil body (7) as the center.

7. The voice coil that is easy to install and remove according to claim 1, characterized in that: The wing (73) is a thin sheet structure, and the wing (73) is distributed in a ring array on one end of the inner wall of the voice coil body (7) skeleton near the cone (9). The other end of the wing (73) is fixed to the corresponding position on the surface of the cone (9) by external glue coating.

8. A voice coil that is easy to install and remove according to claim 1, characterized in that: The cone (9) is a tapered part that is wider at the top and narrower at the bottom. A dust cover (10) is bonded to the surface of the shaft hole for mounting the voice coil body (7). The dust cover (10) is a hollow circular structure that gradually narrows from bottom to top. The top of the skeleton of the voice coil body (7) abuts against the corresponding position in the hollow interior of the dust cover (10).

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