speaker

Abstract

The present invention relates to the field of acoustic and electrical technology, and provides a loudspeaker, including a basin, a vibration system fixed to the basin, and a magnetic circuit system for driving the vibration system to vibrate, the vibration system including a diaphragm fixed to the basin, a voice coil for driving the diaphragm to vibrate and produce sound, and a first flexible support member connecting the voice coil and an external circuit, the voice coil including a first voice coil and a second voice coil fixed to a side of the diaphragm close to the magnetic circuit system and arranged side by side along a first direction; the first flexible support member is arranged on one side of the voice coil along a second direction perpendicular to the first direction and includes a first main body fixed to the basin, a first extension portion bent and extended from the first main body toward a direction close to the diaphragm and fixed to the diaphragm, and a first lead connection portion extending from the first extension portion toward a direction close to the middle position of the first voice coil and the second voice coil, and the lead of the voice coil is electrically connected to the first lead connection portion. The loudspeaker of the present invention can effectively reduce the possibility of lead breakage caused by frequent high-frequency signals.

Description

Technical Field

[0001] The present invention relates to the field of acoustic and electrical technology, and in particular to a loudspeaker. Background Art

[0002] With the development of science and technology, portable electronic products, such as mobile phones, handheld game consoles, navigation devices or handheld multimedia entertainment devices, are widely used in people's daily lives. In these mobile electronic devices, voice playback devices are indispensable components. The quality of voice directly affects the user experience when users use these mobile electronic devices. Therefore, the requirements for the speakers used in them are getting higher and higher.

[0003] The speaker includes a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system that drives the vibration system to vibrate. In order to make full use of the magnetic field generated by the magnetic circuit system, the vibration system in the related technology is equipped with at least two parallel voice coils, and the voice coils are connected by a bent FPC to conduct current. However, the bent FPC is far away from the voice coil, and the high-frequency resonance mode amplitude of the dome is large, which can easily cause lead fatigue and breakage.

[0004] Therefore, it is necessary to provide a product that solves the above problems. Summary of the invention

[0005] An object of the present invention is to provide a loudspeaker which can effectively reduce the possibility of lead wire breakage caused by frequent high-frequency signals.

[0006] In order to achieve the above-mentioned object, the present invention provides a loudspeaker, comprising a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate, wherein the vibration system comprises a diaphragm fixed to the basin frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a first flexible support member connecting the voice coil and an external circuit.

[0007] The voice coil comprises a first voice coil and a second voice coil fixed to a side of the diaphragm close to the magnetic circuit system and arranged side by side along a first direction;

[0008] The first flexible support member is arranged on one side of the voice coil along a second direction perpendicular to the first direction and includes a first main body portion fixed to the basin frame, a first extension portion bent and extended from the first main body portion in a direction close to the diaphragm and fixed to the diaphragm, and a first lead connection portion extending from the first extension portion in a direction close to the middle position of the first voice coil and the second voice coil, the first direction and the second direction are both perpendicular to the vibration direction of the diaphragm, and the lead of the voice coil is electrically connected to the first lead connection portion.

[0009] Preferably, the first main body is provided with an external solder pad connected to an external circuit, the lead includes a first voice coil input lead and a second voice coil output lead, and the first lead connection portion includes a first solder pad electrically connected to the first voice coil input lead and a second solder pad electrically connected to the output lead.

[0010] Preferably, the first main body portion includes two elastic arms spaced apart along the first direction, and the first extension portion includes two supporting portions which are bent and extended from the two elastic arms respectively toward the diaphragm and fixed to the diaphragm, and a conducting portion connecting the two supporting portions.

[0011] Preferably, the speaker also includes a second flexible support member arranged on the other side of the voice coil along the second direction, the second flexible support member includes a second main body portion fixed to the basin frame, a second extension portion bent and extended from the second main body portion in a direction close to the diaphragm and fixed to the diaphragm, and a second lead connection portion extending from the second extension portion to a middle position between the first voice coil and the second voice coil, the leads include a first voice coil outlet lead and a second voice coil inlet lead, and the second lead connection portion includes a third soldering pad electrically connected to the first voice coil outlet lead and a fourth soldering pad electrically connected to the second voice coil inlet lead.

[0012] Preferably, the magnetic circuit system includes a lower clamping plate, two inner magnetic circuit parts connected to the lower clamping plate, and an outer magnetic circuit part arranged around the two inner magnetic circuit parts, the two inner magnetic circuit parts are arranged corresponding to the voice coils and are respectively surrounded by the first voice coil and the second voice coil, the two inner magnetic circuit parts and the outer magnetic circuit part jointly form a magnetic gap, and the voice coil is inserted in the magnetic gap.

[0013] Preferably, the two inner magnetic circuit parts each include an inner magnetic steel fixed to the lower clamping plate and an inner pole core covering the side of the inner magnetic steel away from the lower clamping plate, and the outer magnetic circuit part includes an outer magnetic steel fixed to the lower clamping plate and an outer pole core covering the side of the outer magnetic steel away from the lower clamping plate.

[0014] Preferably, the outer pole core includes two first axial edges extending along the first direction and two first protrusions extending from the two first axial edges in directions away from the voice coil.

[0015] Preferably, the external magnetic steel includes a first external magnetic segment arranged between two of the internal magnetic steels, four second external magnetic segments arranged around the two internal magnetic steels, the four second external magnetic segments each including a first edge extending along the first direction and a second edge extending along the second direction, and the external magnetic steel also includes a third external magnetic segment arranged between two adjacent first edges.

[0016] Preferably, a length d1 of the first side in the second direction is smaller than a length d2 of the third external magnetic segment in the second direction.

[0017] Preferably, a length d3 of the first outer magnetic segment in the second direction is smaller than a length d4 of the inner magnetic steel in the second direction.

[0018] The novel loudspeaker of the present invention comprises a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate, wherein the vibration system comprises a diaphragm fixed to the basin frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a first flexible support member connecting the voice coil and an external circuit, wherein the voice coil comprises a first voice coil and a second voice coil fixed to a side of the diaphragm close to the magnetic circuit system and arranged side by side along a first direction; the first flexible support member is arranged on one side of the voice coil along a second direction perpendicular to the first direction and comprises a first main body portion fixed to the basin frame, a first extension portion bent and extended from the first main body portion toward a direction close to the diaphragm and fixed to the diaphragm, and a first lead connection portion extending from the first extension portion toward a direction close to a middle position between the first voice coil and the second voice coil, wherein the first direction and the second direction are both perpendicular to the vibration direction of the diaphragm, and the lead of the voice coil is electrically connected to the first lead connection portion. By setting up multiple voice coils, the structural strength of the diaphragm can be significantly improved, and the frequency of the high-frequency resonance mode can be greatly increased. At the same time, the first lead connection part is set at a middle position close to the first voice coil and the second voice coil. The diaphragm deformation at this position is minimal, which can effectively reduce the relative displacement between the first lead connection part and the voice coil, and reduce the possibility of fatigue breakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in the field of the present invention, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 is a stereogram of the loudspeaker of the present invention;

[0021] Figure 2 An exploded view of the loudspeaker of the present invention;

[0022] Figure 3 It is a schematic diagram of the combination of the first flexible support member, the second flexible support member and the voice coil of the speaker of the present invention;

[0023] Figure 4 It is a schematic diagram of the combination of the inner magnetic steel and the outer magnetic steel of the speaker of the present invention;

[0024] Figure 5 The speaker of the present invention is Figure 1 Sectional view along line AA;

[0025] Reference numerals:

[0026] 100. Speaker;

[0027] 1. Basin stand;

[0028] 2. Vibration system; 21. Diaphragm; 211. Dome; 212. Folding ring; 22. Voice coil; 221. First voice coil; 222. Second voice coil; 223. Lead wire; 2231. First voice coil inlet lead wire; 2232. Second voice coil outlet lead wire; 2233. First voice coil outlet lead wire; 2234. Second voice coil inlet lead wire; 23. First flexible support member; 231. First main body; 23 11. elastic arm; 2311a. outer pad; 232. first extension portion; 2321. support portion; 2322. conducting portion; 233. first lead connection portion; 2331. first pad; 2332. second pad; 24. second flexible support member; 241. second main body portion; 242. second extension portion; 243. second lead connection portion; 2431. third pad; 2432. fourth pad;

[0029] 3. Magnetic circuit system; 31. Lower clamping plate; 32. Inner magnetic circuit part; 321. Inner magnetic steel; 322. Inner pole core; 33. Outer magnetic circuit part; 331. Outer magnetic steel; 3311. First outer magnetic segment; 3312. Second outer magnetic segment; 3312a. First edge; 3312b. Second edge; 3313. Third outer magnetic segment; 332. Outer pole core; 3321. First axial edge; 3322. First protrusion; 34. Magnetic gap. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field of the present invention without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-5 As shown, the present invention provides a speaker 100, comprising a basin frame 1, a vibration system 2 fixed to the basin frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to vibrate, wherein the vibration system 2 comprises a diaphragm 21 fixed to the basin frame 1, a voice coil 22 for driving the diaphragm 21 to vibrate and produce sound, and a first flexible support member 23 connecting the voice coil 22 and an external circuit;

[0032] The voice coil 22 includes a first voice coil 221 and a second voice coil 222 fixed below the diaphragm 21 and arranged side by side along a first direction; the first flexible support member 23 is arranged on one side of the voice coil 22 along a second direction perpendicular to the first direction and includes a first main body 231 fixed to the basin frame 1, a first extension portion 232 bent and extended from the first main body 231 toward a direction close to the diaphragm 21 and fixed to the diaphragm 21, and a first lead connection portion 233 extending from the first extension portion 232 toward a direction close to the middle position of the first voice coil 221 and the second voice coil 222, and the lead 223 of the voice coil is electrically connected to the first lead connection portion 233.

[0033] By setting up multiple voice coils, the structural strength of the diaphragm can be significantly improved, and the frequency of the high-frequency resonance mode can be greatly increased. At the same time, the first lead connection part is set at a middle position close to the first voice coil and the second voice coil. The diaphragm deformation at this position is minimal, which can effectively reduce the relative displacement between the first lead connection part and the voice coil, and reduce the possibility of fatigue breakage.

[0034] It should be noted that, in this embodiment, both the first direction and the second direction are perpendicular to the vibration direction of the diaphragm.

[0035] Preferably, Figure 2 As shown, the diaphragm 21 includes a dome 211 and a folded ring 212 arranged around the dome 211, and the first voice coil 221 and the second voice coil 222 are both fixed to the dome 211.

[0036] Preferably, Figure 3 As shown, the first main body 231 is provided with an external solder pad 2311a connected to an external circuit, the lead 223 includes a first voice coil input lead 2231 and a second voice coil output lead 2232, and the first lead connection portion 233 includes a first solder pad 2331 electrically connected to the first voice coil input lead 2231 and a second solder pad 2332 electrically connected to the second voice coil output lead 2232.

[0037] like Figure 2-3 As shown, the first main body 231 includes two elastic arms 2311 spaced apart along the first direction, and the first extension portion 232 includes two support portions 2321 bent and extended from the two elastic arms 2311 toward the diaphragm 21 and fixed to the diaphragm 21, and a conducting portion 2322 connecting the two support portions 2321. With such an arrangement, the internal space of the speaker can be effectively utilized, creating favorable conditions for the arrangement of the magnetic circuit system, so as to obtain a larger BL value.

[0038] Furthermore, the speaker also includes a second flexible support member 24 arranged along the second direction on the other side of the voice coil 22, the second flexible support member 24 includes a second main body portion 241 fixed to the basin frame 1, a second extension portion 242 bent and extended from the second main body portion 241 in a direction close to the diaphragm 21 and fixed to the diaphragm 21, and a second lead connection portion 243 extending from the second extension portion 242 to the middle position between the first voice coil 221 and the second voice coil 222. The lead 223 includes a first voice coil outlet lead 2233 and a second voice coil inlet lead 2234, and the second lead connection portion 243 includes a third solder pad 2431 electrically connected to the first voice coil outlet lead 2233 and a fourth solder pad 2432 electrically connected to the second voice coil inlet lead 2234. By extending the second lead connection portion 243 to a position between the first voice coil 221 and the second voice coil 222, the deformation of the diaphragm is minimized at this location. Such an arrangement can shorten the lead length, improve the stability of the connection between the lead and the solder pad, reduce the risk of fatigue fracture of the voice coil lead, and further reduce the risk of the voice coil lead interfering with the diaphragm vibration and affecting the sound of the speaker.

[0039] In this embodiment, the current signal from the external circuit enters the speaker 100 through the external pad 2311a, flows through the first voice coil 221 through the first pad 2331 of the first lead connection part and the first voice coil input lead 2231, flows out through the first voice coil output lead 2233 and the second pad 2332, flows through the second voice coil 222 through the conductive part 2322, the third pad 2431 and the second voice coil input lead 2234, and finally returns to the external circuit through the second voice coil output lead 2232, the fourth pad 2432 and the external pad 2311a, thereby completing the circuit closure.

[0040] like Figure 4-5 As shown, the magnetic circuit system 3 includes a lower clamping plate 31, two inner magnetic circuit parts 32 connected to the lower clamping plate 31, and an outer magnetic circuit part 33 arranged around the two inner magnetic circuit parts 32. The two inner magnetic circuit parts 32 are arranged corresponding to the voice coil 22 and are respectively surrounded by the first voice coil 221 and the second voice coil 222. The two inner magnetic circuit parts 32 and the outer magnetic circuit part 33 jointly form a magnetic gap 34, and the voice coil 22 is inserted in the magnetic gap 34. The magnetic field generated by the voice coil 22 after power is applied interacts with the magnetic circuit system 3, driving the diaphragm 21 to vibrate and produce sound.

[0041] Preferably, Figure 2As shown, the two inner magnetic circuit parts 32 each include an inner magnetic steel 321 fixed to the lower clamping plate 31 and an inner pole core 322 covering the inner magnetic steel 321 on a side away from the lower clamping plate, the outer magnetic circuit part 33 includes an outer magnetic steel 331 fixed to the lower clamping plate 31 and an outer pole core 332 covering the outer magnetic steel 331 on a side away from the lower clamping plate, the outer pole core 332 includes two first axial edges 3321 extending along a first direction and two first protrusions 3322 extending from the two first axial edges 3321 respectively in a direction away from the voice coil 22.

[0042] Preferably, the outer magnetic steel 331 includes a first outer magnetic segment 3311 disposed between two inner magnetic steels 321, four second outer magnetic segments 3312 disposed around the inner magnetic steel 321, the second outer magnetic segment 3312 includes a first edge 3312a extending along the first direction and a second edge 3312b extending along the second direction, and the outer magnetic steel 331 also includes a third outer magnetic segment 3313 disposed between two adjacent first edges 3312a. The second outer magnetic segment 3312 and the third outer magnetic segment 3313 are disposed in this way to effectively improve the risk of the slender outer magnetic steel being easily broken and the risk of the broken position being uncontrollable when the speaker falls accidentally. In this embodiment, the shape of the second outer magnetic steel is set to be similar to an L shape, which can further improve the anti-fracture strength of the magnetic steel, and at the same time can effectively concentrate the magnetic field of the magnetic gap at that location, thereby improving the BL value.

[0043] Preferably, Figure 4 As shown, the length d1 of the first side 3312a in the second direction is less than the length d2 of the third outer magnetic segment 3313 in the second direction. This arrangement can maximize the use of the internal space of the speaker, while increasing the volume of the magnetic steel in the magnetic circuit system and improving the BL value, thereby making the sound performance of the speaker more superior.

[0044] Preferably, Figure 4 As shown, the length d3 of the first outer magnetic segment 3311 in the second direction is less than the length d4 of the inner magnetic steel 321 in the second direction. In this way, the magnetic field strength of each magnetic gap can be balanced to improve the acoustic stability of the speaker. At the same time, it can effectively avoid the magnetic circuit system from interfering with or hindering the first lead connection part.

[0045] Compared with the related art, the speaker of the present invention can significantly improve the structural strength of the diaphragm and greatly increase the frequency of the high-frequency resonance mode by setting multiple voice coils. At the same time, the first lead connection part is set at a middle position close to the first voice coil and the second voice coil. The diaphragm deformation at this position is minimal, which can effectively reduce the relative displacement between the first lead connection part and the voice coil and reduce the possibility of fatigue breakage.

[0046] The above description is only an implementation mode of the present invention. It should be pointed out that ordinary technicians in the field of the present invention can make improvements without departing from the creative concept of the present invention, but these all fall within the protection scope of the present invention.

Claims

1. A speaker, comprising a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate, wherein the vibration system comprises a diaphragm fixed to the basin frame, a voice coil for driving the diaphragm to vibrate and produce sound, and a first flexible support member connecting the voice coil and an external circuit, characterized in that: The voice coil comprises a first voice coil and a second voice coil fixed to a side of the diaphragm close to the magnetic circuit system and arranged side by side along a first direction; The first flexible support member is arranged on one side of the voice coil along a second direction perpendicular to the first direction and includes a first main body portion fixed to the basin frame, a first extension portion bent and extended from the first main body portion in a direction close to the diaphragm and fixed to the diaphragm, and a first lead connection portion extending from the first extension portion in a direction close to the middle position of the first voice coil and the second voice coil, the first direction and the second direction are both perpendicular to the vibration direction of the diaphragm, and the lead of the voice coil is electrically connected to the first lead connection portion; The magnetic circuit system comprises a lower clamping plate, two inner magnetic circuit parts connected to the lower clamping plate, and an outer magnetic circuit part arranged around the two inner magnetic circuit parts, the two inner magnetic circuit parts are arranged corresponding to the voice coils and are respectively surrounded by the first voice coil and the second voice coil, the two inner magnetic circuit parts and the outer magnetic circuit part jointly form a magnetic gap, and the voice coil is inserted in the magnetic gap; The two inner magnetic circuit parts each include an inner magnetic steel fixed to the lower clamping plate and an inner pole core covered on a side of the inner magnetic steel away from the lower clamping plate, and the outer magnetic circuit part includes an outer magnetic steel fixed to the lower clamping plate and an outer pole core covered on a side of the outer magnetic steel away from the lower clamping plate; The outer magnetic steel includes a first outer magnetic segment arranged between two inner magnetic steels, four second outer magnetic segments arranged around the two inner magnetic steels, the four second outer magnetic segments each including a first edge extending along the first direction and a second edge extending along the second direction, and the outer magnetic steel also includes a third outer magnetic segment arranged between two adjacent first edges; The length d1 of the first side in the second direction is less than the length d2 of the third external magnetic segment in the second direction; A length d3 of the first outer magnetic segment in the second direction is smaller than a length d4 of the inner magnetic steel in the second direction.

2. The loudspeaker according to claim 1, characterized in that: The first main body is provided with an external pad connected to an external circuit, the lead includes a first voice coil input lead and a second voice coil output lead, and the first lead connection portion includes a first pad electrically connected to the first voice coil input lead and a second pad electrically connected to the output lead.

3. The loudspeaker according to claim 1, characterized in that: The first main body includes two elastic arms spaced apart along the first direction, and the first extension portion includes two support portions bent and extended from the two elastic arms toward the diaphragm and fixed to the diaphragm, and a conducting portion connecting the two support portions.

4. The loudspeaker according to claim 1, characterized in that: The speaker also includes a second flexible support member arranged on the other side of the voice coil along the second direction, the second flexible support member includes a second main body portion fixed to the basin frame, a second extension portion bent and extended from the second main body portion in a direction close to the diaphragm and fixed to the diaphragm, and a second lead connection portion extending from the second extension portion to a middle position between the first voice coil and the second voice coil, the leads include a first voice coil outlet lead and a second voice coil inlet lead, the second lead connection portion includes a third solder pad electrically connected to the first voice coil outlet lead and a fourth solder pad electrically connected to the second voice coil inlet lead.

5. The loudspeaker according to claim 1, characterized in that: The outer pole core includes two first axial edges extending along the first direction and two first protrusions extending from the two first axial edges in directions away from the voice coil.

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