Anti-static loudspeaker
By setting up an annular electric lead slot and flexible grounding conductive structure on the speaker basin rack, the problem of static electricity generated by the speaker is solved, the effective release of static electricity and the protection of the cone basin is achieved, and the sound quality and integrity of the speaker are maintained.
Patent Information
- Application Number
- CN202422516162.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-08-08
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Existing speakers are prone to static electricity in dry environments, and traditional grounding methods or coating antistatic coatings will affect the dryness of the cone and increase wiring complexity.
An annular electric conductor is provided on the end surface of the basin of the speaker, with conductive rings and grounding wires inside. The outer edge of the cone basin extends through the clamping member to the closed space, flexible contact with the conductive rings and grounding wires, reducing friction, realizing grounding conduction between internal and external static electricity, and ensuring the integrity of the cone basin through the design of the clamping member and the threading pipe.
Effectively release static electricity, reduce wear of the cone basin, maintain the anti-static and sound quality of the speaker, avoid internal static conduction friction, and maintain the integrity of the cone basin.
Smart Images
Figure CN223207249U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of loudspeakers, and in particular relates to an anti-static loudspeaker. Background Art
[0002] A speaker is a crucial electronic component for producing sound, typically embedded in a sound box. It typically consists of a voice coil, a bobbin, a spring (also called a centering support), a cone (or paper cone, diaphragm), a dust cover, and a surround. Because the cone vibrates rapidly under the action of the voice coil, speakers are prone to static electricity in dry environments. Therefore, a grounding wire or antistatic coating should be used.
[0003] First, applying an antistatic coating forms a water film or conductive layer on the surface of the material through adsorption, thereby preventing the formation and accumulation of static electricity, but it is not conducive to keeping the cone dry, so it is not often used.
[0004] Second, a grounding wire is inserted into the speaker housing, with one end connected to the ground and the other to the speaker frame. This single wire grounding eliminates static electricity without significantly increasing the complexity of the speaker's internal wiring.
[0005] When producing speakers in factories, it is very common to apply an insulating coating on the frame and basin. In addition, the outer edge of the cone needs to be glued to the basin frame with glue. This glue generally uses an insulating resin-based glue, so the static electricity conduction between the cone and the grounding wire is hindered by the insulating coating and glue. The grounding wire only absorbs the static electricity inside the basin frame well, which is not conducive to improving the anti-static performance of the external cone. Utility Model Content
[0006] The purpose of the utility model is to provide an anti-static speaker, which can conduct the static electricity inside and outside the speaker to the ground, and is also used to reduce the area of the cone being worn, and has excellent anti-static properties while maintaining good integrity.
[0007] The technical solutions adopted by this utility model are as follows:
[0008] An anti-static speaker comprises a magnetic core, a basin frame, and a cone, arranged in sequence along an axial direction. The basin frame has an annular current-drawing groove formed on its end surface. A clamping member is provided at the opening of the current-drawing groove. The outer edge of the cone extends through the clamping member into the current-drawing groove, enclosing the groove. A conductive ring and a grounding wire welded to the conductive ring are inserted into the current-drawing groove. One end of the grounding wire extends out of the current-drawing groove from the back of the basin frame, and the extended portion flexibly contacts the conductive ring and the grounding wire.
[0009] Even if the cone vibrates, its extended part will not rub violently against the conductive ring and grounding wire. While taking into account the grounding conduction of static electricity inside and outside the speaker, it is also used to reduce the area of the cone that is worn. The static electricity inside and outside the cone is conducted to the earth along the conductive ring and grounding wire, releasing the charge. The three are in soft contact. The three are enclosed in the charge groove and violent friction between the three can be avoided. This makes the cone have excellent anti-static properties while maintaining good integrity.
[0010] As a preferred solution, the clamping member includes an inner ring member and an outer ring member respectively fixed to the inner and outer edges of the power guide groove, and the outer end face of the inner ring member and the outer end face of the outer ring member are tightly attached together in an arc shape, which is used to clamp the extended part of the cone basin and can close the power guide groove. After the inner ring member and the outer ring member are locked at the opening of the power guide groove with screws, the inner ring member and the outer ring member are tightly attached to each other so as to clamp the extended part of the cone basin. While the cone basin is tensioned, the arc structure can be elastically deformed, so that the cone basin vibrates more smoothly under the action of the magnetic core.
[0011] As a preferred solution, a wire tube connected to the power inlet groove is fixed on the back of the basin frame. The wire tube is sleeved on the outside of the grounding wire to guide and support the grounding wire, making it convenient for the grounding wire to be away from the cone basin, and the inside of the wire tube can be filled with conductive glue to further seal the power inlet groove.
[0012] As a preferred solution, the inner arc surface of the outer ring is fixed with a ring-shaped adhesive layer, and the adhesive layer adheres the extended part of the cone basin to the close contact between the outer end face of the inner ring and the outer ring. The adhesive layer can adopt resin-based glue to adhere the extended part of the cone basin and further close the power-drawing groove, so that the extended part of the cone basin maintains a sufficient length to enter the power-drawing groove and be connected to the conductive ring and the grounding wire.
[0013] As a preferred solution, a bending portion is integrally installed at the connection position between the outer ring and the power guide groove. The bending portion is used for the outer ring to elastically deform with the vibration of the cone, further improving the elasticity of the close contact between the inner ring and the outer ring, which is conducive to the smooth deformation of the inner ring and the outer ring with the vibration of the cone.
[0014] As a preferred solution, the magnetic core includes a voice coil and a spring mounted on the end face of the voice coil. The middle of the cone is protruding and passes through the inner hole of the cone frame axially to connect to the front face of the spring.
[0015] As a preferred solution, a dust cap is fixed inside the cone.
[0016] The technical effects achieved by this utility model are:
[0017] The outer edge of the cone of the present invention passes through the clamping piece and extends into the current guide groove to be in a closed space. The extended part flexibly contacts the conductive ring and the grounding wire. Even if the cone vibrates, the extended part will not violently rub against the conductive ring and the grounding wire. While taking into account the grounding conduction of static electricity inside and outside the speaker, it is also used to reduce the area of the cone that is worn. The static electricity inside and outside the cone is conducted to the earth along the conductive ring and the grounding wire to release the charge. The three are in soft contact, and while being enclosed in the current guide groove, violent friction between the three can be avoided, so that the cone has excellent anti-static properties while maintaining good integrity.
[0018] The outer end face of the inner ring and the outer end face of the outer ring of the utility model are tightly attached together in an arc shape, which is used to clamp the extended part of the cone basin and can close the power lead groove, reducing the dust entering the power lead groove from the outside. After the inner ring and the outer ring are locked at the opening of the power lead groove with screws, the inner ring and the outer ring are tightly attached to each other and can clamp the extended part of the cone basin. While the cone basin is tensioned, the arc structure can be elastically deformed, so that the cone basin vibrates more smoothly under the action of the magnetic core. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 This is a main view of an anti-static speaker of the utility model;
[0020] Figure 2 This is an exploded view of an anti-static speaker of the utility model;
[0021] Figure 3 It is a cross-sectional view of the basin stand of the present utility model;
[0022] Figure 4 This utility model Figure 3 Magnified view of point A in the middle.
[0023] In the accompanying drawings, the components represented by the reference numerals are as follows:
[0024] 1. Basin frame; 2. Cone basin; 3. Leading groove; 4. Conductive ring; 5. Grounding wire; 6. Inner ring; 7. Outer ring; 8. Threading tube; 9. Adhesive layer; 10. Bend; 11. Voice coil; 12. Damper; 13. Dust cap; 14. T-shaped iron; 15. Magnet; 16. Wass. DETAILED DESCRIPTION
[0025] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is described in detail below with reference to the following embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention and does not strictly limit the scope of protection of the present invention.
[0026] like Figures 1-4As shown, an anti-static speaker is installed on the front of a sound box for playing recordings, including a T-shaped iron 14, a magnet 15, a washer 16, a magnetic core, a basin frame 1 and a cone 2 arranged in sequence along the axial direction. The basin frame 1 and the cone 2 are both horn-shaped, the magnet 15 and the washer 16 are both ring-shaped, the magnet 15 and the washer 16 are axially inserted into the middle of the T-shaped iron 14, and a ring-shaped current-drawing groove 3 is opened on the end face of the basin frame 1. A clamping piece is provided at the opening of the current-drawing groove 3. A conductive ring 4 and a grounding wire 5 welded to the conductive ring 4 are inserted into the current-drawing groove 3. One end of the grounding wire 5 extends out of the current-drawing groove 3 from the back of the basin frame 1.
[0027] In the installed state, the outer edge of the cone 2 passes through the clamping piece and extends into the current guide groove 3 to be in a closed space. The extended part flexibly contacts the conductive ring 4 and the grounding wire 5. Even if the cone 2 vibrates, the extended part will not violently rub against the conductive ring 4 and the grounding wire 5. While taking into account the grounding conduction of static electricity inside and outside the speaker, it is also used to reduce the area of the cone 2 that is worn.
[0028] During use, the basin frame 1 is supported by the T-shaped iron 14, the magnet 15, and the washer 16. When the magnetic core is energized, the cone 2 is driven to vibrate. Static electricity is generated due to friction, and the charge can cross between the exposed part and the extended part of the cone 2, realizing the connection between the internal and external static electricity. The static electricity inside and outside the cone 2 is transmitted to the ground along the conductive ring 4 and the grounding wire 5, releasing the charge. The three are in soft contact with each other, and the three are enclosed in the current guide groove 3, while avoiding severe friction between the three, so that the cone 2 has excellent antistatic properties while maintaining good integrity.
[0029] The end of the grounding wire 5 away from the conductive ring 4 can be optionally connected to a conductive plate, and the conductive plate is used to transport the charge to the fixed base of the speaker for neutralization.
[0030] Refer to the attached Figure 2 、 Figure 3 and Figure 4 The clamping parts include an inner ring part 6 and an outer ring part 7 respectively fixed to the inner and outer edges of the power introduction groove 3. The outer end surface of the inner ring part 6 and the outer end surface of the outer ring part 7 are arc-shaped and tightly attached to each other, which are used to clamp the extended part of the cone 2 and can close the power introduction groove 3, reducing the dust entering the power introduction groove 3 from the outside. After locking the inner ring part 6 and the outer ring part 7 at the opening of the power introduction groove 3 with screws, the inner ring part 6 and the outer ring part 7 are tightly attached to each other and can clamp the extended part of the cone 2. While tensioning the cone 2, the arc structure can be elastically deformed, so that the cone 2 vibrates more smoothly under the action of the magnetic core, and will not reduce the sound quality of the speaker.
[0031] Refer to the attached Figure 2 and Figure 3A wire tube 8 connected to the power-introduction groove 3 is fixed on the back of the basin frame 1. The wire tube 8 is sleeved on the outside of the grounding wire 5 to guide and support the grounding wire 5, making it convenient for the grounding wire 5 to stay away from the cone basin 2. The inside of the wire tube 8 can be filled with conductive glue to further seal the power-introduction groove 3.
[0032] Referring to the accompanying drawings, an annular adhesive layer 9 is fixed to the inner arc surface of the outer ring member 7. The adhesive layer 9 firmly adheres to the extended part of the cone 2 at the close contact between the outer end surface of the inner ring member 6 and the outer ring member 7. The adhesive layer 9 can adopt a resin-based glue to firmly adhere the extended part of the cone 2 and further close the power lead groove 3, so that the extended part of the cone 2 maintains a sufficient length to enter the power lead groove 3 and be connected to the conductive ring 4 and the grounding wire 5.
[0033] Refer to the attached Figure 2 、 Figure 3 and Figure 4 The connection position between the outer ring 7 and the power guide groove 3 is integrally installed with a bending portion 10. The bending portion 10 is used for the outer ring 7 to elastically deform with the vibration of the cone 2, further improving the elasticity of the close contact between the inner ring 6 and the outer ring 7, which is conducive to the smooth deformation of the inner ring 6 and the outer ring 7 with the vibration of the cone 2.
[0034] Refer to the attached Figure 1 and Figure 2 The magnetic core includes a voice coil 11 and a spring 12 installed on the end face of the voice coil 11. The middle of the cone 2 protrudes and passes axially through the inner hole of the basin frame 1 to connect to the front face of the spring 12. The connection end of the voice coil 11 is connected to the power supply. The spring 12 is used to increase the area of the spring 12 connecting to the cone 2, making the connection between the voice coil 11 and the cone 2 more secure. Once the voice coil 11 is energized, it can reliably drive the cone 2 to vibrate.
[0035] Refer to the attached Figure 1 and Figure 2 A dust cap 13 is fixed inside the cone 2 to seal the inner hole of the cone 2 and isolate it from external dust.
[0036] The working principle of the present utility model is as follows: in the installed state, the outer edge of the cone 2 passes through the clamping piece and extends into the power guide groove 3 to be in a closed space. The extended part flexibly contacts the conductive ring 4 and the grounding wire 5. Even if the cone 2 vibrates, the extended part will not violently rub against the conductive ring 4 and the grounding wire 5. While taking into account the grounding conduction of static electricity inside and outside the speaker, it is also used to reduce the area of the cone 2 that is worn.
[0037] During use, the basin frame 1 is supported by the T-shaped iron 14, the magnet 15, and the washer 16. When the magnetic core is energized, the cone 2 is driven to vibrate. Static electricity is generated due to friction, and the static electricity inside and outside the cone 2 is conducted to the ground along the conductive ring 4 and the grounding wire 5, releasing the charge. In addition, the three are in soft contact with each other. While being enclosed in the current-inducing groove 3, violent friction between the three can be avoided, so that the cone 2 has excellent antistatic properties while maintaining good integrity.
[0038] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art may make various improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention shall, unless otherwise specified or limited, be implemented in accordance with conventional means in the art.
Claims
1. An anti-static speaker, comprising a magnetic core, a basin frame (1) and a cone (2) arranged in sequence along an axial direction, characterized in that: The end surface of the basin frame (1) is provided with a ring-shaped power-introduction groove (3), a clamping piece is provided at the opening of the power-introduction groove (3), the outer edge of the cone basin (2) passes through the clamping piece and extends into the power-introduction groove (3) to be in a closed space, a conductive ring (4) and a grounding wire (5) welded to the conductive ring (4) are inserted into the power-introduction groove (3), one end of the grounding wire (5) extends out of the power-introduction groove (3) from the back of the basin frame (1), and the extended portion flexibly contacts the conductive ring (4) and the grounding wire (5).
2. The anti-static speaker according to claim 1, characterized in that: The clamping member comprises an inner ring member (6) and an outer ring member (7) respectively fixed to the inner and outer edges of the current guide groove (3); the outer end surface of the inner ring member (6) and the outer end surface of the outer ring member (7) are closely attached together in an arc shape, and are used to clamp the extended portion of the cone (2) and can close the current guide groove (3).
3. The anti-static speaker according to claim 1, characterized in that: A wire threading tube (8) connected to the power guide slot (3) is fixed on the back of the basin frame (1); the wire threading tube (8) is sleeved on the outside of the grounding wire (5) and is used to guide and support the grounding wire (5).
4. The anti-static speaker according to claim 2, characterized in that: An annular bonding layer (9) is fixed to the inner arc surface of the outer ring member (7), and the bonding layer (9) adheres to the extended portion of the cone (2) at the contact point between the outer end surface of the inner ring member (6) and the outer ring member (7).
5. The anti-static speaker according to claim 2, characterized in that: A bending portion (10) is integrally installed at the connection position between the outer ring member (7) and the current guide slot (3), and the bending portion (10) is used for the outer ring member (7) to elastically deform in response to the vibration of the cone (2).
6. The anti-static speaker according to claim 1, characterized in that: The magnetic core comprises a voice coil (11) and a spring wave (12) mounted on the end face of the voice coil (11); the middle of the cone (2) protrudes and passes through the inner hole of the cone frame (1) in the axial direction to connect to the front face of the spring wave (12).
7. The anti-static speaker according to claim 1, characterized in that: A dust cap (13) is fixed inside the cone (2).