Short circuit prevention type voice coil structure

Abstract

The utility model provides a short circuit prevention type voice coil structure, which comprises a framework, a coil, a first leading-out wire and a second leading-out wire, a reinforcing paper layer is coated on the framework, the coil is wound on the reinforcing paper layer, a first bonding pad and a second bonding pad are arranged on the surface of the reinforcing paper layer, two ends of the coil are respectively welded on the first bonding pad and the second bonding pad, and the first bonding pad and the second bonding pad are welded on the framework. A fuse wire is welded on the first bonding pad, the other end of the fuse wire is electrically connected with one end of the first outgoing line, and one end of the second outgoing line is welded on the second bonding pad. According to the voice coil, the fuse is bridged between the first bonding pad and the first outgoing line, the proper fuse is selected according to the rated power of the voice coil, and when the coil has large current, the fuse is fused instantly, so that burning loss of an insulating layer of an enameled wire caused by over-high temperature of the coil is avoided, short circuit is prevented, and the use safety of the voice coil is improved. The voice coil has the advantages of simple structure and good productivity, avoids using a large-volume fuse, does not influence the volume of the voice coil, and is convenient for normal installation and use of the voice coil.

Description

Technical Field

[0001] The utility model relates to the technical field of voice coils, in particular to a short-circuit-proof voice coil structure. Background Art

[0002] The voice coil is a crucial component of a loudspeaker, consisting primarily of a bobbin and coil. During operation, only about 15% of the input current generates kinetic energy in the magnetic circuit. The remaining current generates heat within the voice coil. Excessive heat can melt the insulation layer of the enameled wire, leading to a short circuit and posing a significant safety hazard. Existing voice coils lack short-circuit protection, necessitating an urgent design to address this issue. Summary of the Invention

[0003] The problem to be solved by the utility model is to provide an anti-short-circuit voice coil structure, which has an anti-short-circuit function and improves the safety of the voice coil.

[0004] To solve the above technical problems, an anti-short-circuit voice coil structure is provided in accordance with the utility model, which includes a skeleton, a coil, a first lead wire, and a second lead wire. The skeleton is covered with a reinforcing paper layer, and the coil is wound on the reinforcing paper layer. A first soldering pad and a second soldering pad are provided on the surface of the reinforcing paper layer. The two ends of the coil are respectively welded to the first soldering pad and the second soldering pad. A fuse is welded to the first soldering pad, and the other end of the fuse is electrically connected to one end of the first lead wire. One end of the second lead wire is welded to the second soldering pad.

[0005] Preferably, a third soldering pad and a fourth soldering pad are also provided on the surface of the reinforcing paper layer, the first soldering pad and the second soldering pad are both welded to the skeleton, a copper foil is provided between the surface of the skeleton and the inner side of the reinforcing paper layer, the third soldering pad and the fourth soldering pad are both welded to the copper foil, the other end of the fuse is welded to the third soldering pad, and one end of the first lead wire is welded to the fourth soldering pad.

[0006] Preferably, the fuse is a copper wire.

[0007] The beneficial effects of the present invention are as follows: The present invention provides a short-circuit-proof voice coil structure. By connecting a fuse between the first pad and the first lead wire, and selecting an appropriate fuse based on the voice coil's rated power, the fuse instantly blows when a high current flows through the coil, preventing the insulation layer of the enameled wire from burning due to excessive coil temperature, preventing short circuits, and improving the safety of the voice coil. The structure is simple and highly manufacturable, avoiding the need for bulky fuses, which does not affect the voice coil's size, and facilitating normal installation and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 The front view of the present invention is illustrated.

[0009] Figure 2 A top view of the present invention is illustrated.

[0010] Figure 3 This utility model is illustrated Figure 2 Schematic diagram of the partially enlarged structure of part A in the middle.

[0011] Description of the accompanying drawings: skeleton 1, coil 2, first lead wire 3, second lead wire 4, reinforcing paper layer 5, first soldering pad 6, second soldering pad 7, fuse 8, third soldering pad 9, fourth soldering pad 10, copper foil 11. DETAILED DESCRIPTION

[0012] To make the purpose, technical solutions and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments.

[0013] Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present disclosure.

[0014] refer to Figure 1-3 .

[0015] The utility model provides an anti-short-circuit voice coil structure, comprising a skeleton 1, a coil 2, a first lead wire 3, and a second lead wire 4. The skeleton 1 is covered with a reinforcing paper layer 5, and the coil 2 is wound on the reinforcing paper layer 5. A first soldering pad 6 and a second soldering pad 7 are provided on the surface of the reinforcing paper layer 5. The two ends of the coil 2 are respectively welded to the first soldering pad 6 and the second soldering pad 7. A fuse 8 is welded to the first soldering pad 6. The other end of the fuse 8 is electrically connected to one end of the first lead wire 4. One end of the second lead wire 4 is welded to the second soldering pad 7.

[0016] Its operating principle is to bridge a fuse 8 between the first pad 6 and the first lead 3. The appropriate fuse 8 is selected based on the rated power of the voice coil. When a high current flows through the coil 2, the fuse 8 instantly melts, preventing the coil 2 from overheating and burning the insulation layer of the enameled wire, thus preventing short circuits and improving the safety of the voice coil. This device has the advantages of a simple structure and good productivity, avoiding the need for bulky fuses, maintaining the size of the voice coil, and facilitating normal installation and use.

[0017] Based on the above embodiment, a third soldering pad 9 and a fourth soldering pad 10 are further provided on the surface of the reinforcing paper layer 5, the first soldering pad 6 and the second soldering pad 7 are both welded to the skeleton 1, a copper foil 11 is provided between the surface of the skeleton 1 and the inner side of the reinforcing paper layer 5, the third soldering pad 9 and the fourth soldering pad 10 are both welded to the copper foil 11, the other end of the fuse 8 is welded to the third soldering pad 9, and one end of the first lead wire 3 is welded to the fourth soldering pad 10, which facilitates the welding of the fuse 8 and the first lead wire 3, and facilitates the arrangement of the fuse 8 on the surface of the reinforcing paper layer 5, with good productivity.

[0018] Based on the above embodiment, the fuse 8 is a copper wire. A fuse 8 with a suitable wire diameter is selected according to the rated power of the voice coil. Using copper wire as the fuse 8 can reduce costs.

[0019] The above embodiments are merely descriptions of preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary engineering technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A short-circuit-proof voice coil structure, comprising a skeleton, a coil, a first lead wire, and a second lead wire, characterized in that: The skeleton is covered with a reinforcing paper layer, the coil is wound on the reinforcing paper layer, a first soldering pad and a second soldering pad are provided on the surface of the reinforcing paper layer, two ends of the coil are respectively welded to the first soldering pad and the second soldering pad, a fuse is welded to the first soldering pad, the other end of the fuse is electrically connected to one end of the first lead wire, and one end of the second lead wire is welded to the second soldering pad.

2. The short-circuit-proof voice coil structure according to claim 1, characterized in that: A third soldering pad and a fourth soldering pad are also provided on the surface of the reinforcing paper layer, and the first soldering pad and the second soldering pad are both welded to the skeleton. A copper foil is provided between the surface of the skeleton and the inner side of the reinforcing paper layer, and the third soldering pad and the fourth soldering pad are both welded to the copper foil. The other end of the fuse is welded to the third soldering pad, and one end of the first lead wire is welded to the fourth soldering pad.

3. The short-circuit-proof voice coil structure according to claim 2, characterized in that: The fuse is a copper wire.

Images