speaker

Abstract

The present invention relates to the field of acoustic and electrical technology, and provides a loudspeaker, including a basin frame, a vibration system fixed to the basin frame, and a magnetic circuit system, wherein the vibration system includes a diaphragm fixed to the basin frame and a voice coil assembly driving the diaphragm to vibrate and generate sound; the voice coil assembly includes a first voice coil and a second voice coil located on the diaphragm and arranged side by side along a first direction; the vibration system also includes a first flexible assembly connecting the first voice coil and the second voice coil and a second flexible assembly connecting the voice coil assembly and an external circuit, the first flexible assembly and the second flexible assembly are arranged on opposite sides of the voice coil assembly along a second direction perpendicular to the first direction; the first flexible assembly includes two first flexible support members arranged along the first direction and a conducting portion connecting the two first flexible support members, and the first voice coil and the second voice coil are connected in series through the conducting portion. The loudspeaker of the present invention can not only improve the utilization rate of the voice coil to the magnetic field, but also improve the magnetic field strength, thereby improving the acoustic performance of the product.

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 of the related art includes a magnetic circuit system and a vibration system, wherein the vibration system includes a diaphragm and a single voice coil combined with one side of the diaphragm, and the voice coil is connected to the voice coil through a bent flexible circuit board to conduct current. The energized voice coil can drive the diaphragm to vibrate under the action of the magnetic circuit system, thereby realizing the sound of the sound-generating device. However, due to the limited inner diameter size of a single voice coil, the utilization rate of the magnetic field generated by the magnetic circuit system is not high, and the high-frequency performance and low-frequency performance of the ultra-thin speaker unit are difficult to improve.

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

[0005] The object of the present invention is to provide a loudspeaker which can not only improve the utilization rate of the voice coil to the magnetic field, but also improve the magnetic field strength, thereby improving the acoustic performance of the product.

[0006] In order to achieve the above object, the present invention provides a speaker, comprising a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, wherein the vibration system comprises a diaphragm fixed to the basin frame and a voice coil assembly driving the diaphragm to vibrate and generate sound;

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

[0008] The vibration system further includes a first flexible component fixed to the basin frame and conducting the first voice coil and the second voice coil, and a second flexible component connecting the voice coil component and an external circuit, wherein the first flexible component and the second flexible component are arranged on opposite sides of the voice coil component along a second direction perpendicular to the first direction;

[0009] The first direction and the second direction are both perpendicular to the vibration direction of the diaphragm,

[0010] The first flexible component includes two first flexible supporting members arranged along the first direction and a conducting portion connecting the two first flexible supporting members, and the first voice coil and the second voice coil are connected in series through the conducting portion.

[0011] Preferably, the two first flexible support members each include a first elastic arm fixed to the basin frame, a first support portion bent and extended from the first elastic arm in a direction close to the diaphragm, and a first lead connection portion fixed to the diaphragm and bent and extended from the first support portion in a direction away from the first elastic arm, and the conductive portion connects the two first lead connection portions.

[0012] Preferably, the second flexible component includes two second flexible support members arranged along the first direction, each of the two second flexible support members includes a second elastic arm fixed to the basin frame, a second support portion bent and extended from the second elastic arm in a direction close to the diaphragm, and a second lead connection portion bent and extended from the second support portion in a direction away from the second elastic arm and fixed to the diaphragm, and the second elastic arm is provided with a soldering pad for connecting an external circuit.

[0013] 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 first voice coil is arranged around one of the two inner magnetic circuit parts, the second voice coil is arranged around the other of the two inner magnetic circuit parts, the two inner magnetic circuit parts and the outer magnetic circuit part together form a magnetic gap, and the first voice coil and the second voice coil are both inserted into the magnetic gap.

[0014] Preferably, the two inner magnetic circuit parts include 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.

[0015] Preferably, the outer pole core comprises two first sides extending along the first direction and two first protrusions extending from the two first sides respectively in a direction away from the voice coil assembly, and the two first protrusions are fixedly connected to the basin frame.

[0016] Preferably, the external magnetic steel includes two first external magnetic segments extending along the first direction and arranged on opposite sides of the voice coil assembly, and two second protrusions extending from the two first external magnetic segments in a direction away from the voice coil assembly and fixedly fitted with the two first protrusions.

[0017] Preferably, the lower clamping plate includes a lower clamping plate body and a third protrusion extending from the lower clamping plate body in a direction away from the inner magnetic circuit portion, and the third protrusion is arranged corresponding to the second protrusion along the vibration direction of the diaphragm and is fitted and fixed to the second protrusion.

[0018] Preferably, the external magnetic steel also includes two second external magnetic segments extending along the second direction and arranged on opposite sides of the voice coil assembly, and a third external magnetic segment arranged between the two inner magnetic steels, and the length d1 of the second external magnetic segment along the second direction is greater than the length d2 of the third external magnetic segment along the second direction.

[0019] Preferably, the diaphragm includes a ball top and a folded ring portion arranged around the ball top, the first voice coil and the second voice coil are fixed to the ball top, the ball top includes a bent portion extending from the outer edge of the ball top toward the direction close to the magnetic circuit system and abutting against the first flexible support member, and the bent portion is provided with an opening portion that avoids the first protrusion.

[0020] The present invention provides a loudspeaker, comprising a basin frame, a vibration system and a magnetic circuit system fixed to the basin frame, wherein the vibration system comprises a diaphragm fixed to the basin frame and a voice coil assembly driving the diaphragm to vibrate and produce sound; the voice coil assembly comprises a first voice coil and a second voice coil located on a side of the diaphragm close to the magnetic circuit system and arranged side by side along a first direction; the vibration system further comprises a first flexible assembly fixed to the basin frame and conducting the first voice coil and the second voice coil, and a second flexible assembly connecting the voice coil assembly and an external circuit, the first flexible assembly and the second flexible assembly being arranged on opposite sides of the voice coil assembly along a second direction perpendicular to the first direction; the first direction and the second direction are both perpendicular to the vibration direction of the diaphragm, the first flexible assembly comprises two first flexible support members arranged along the first direction and a conducting portion connecting the two first flexible support members, and the first voice coil and the second voice coil are connected in series through the conducting portion. By arranging multiple voice coils side by side, the inner diameter circumference of the voice coil can be effectively increased. Under the condition of the same voice coil length (L value), the voice coil wall thickness can be smaller, so that the magnetic gap can be narrower, which can effectively improve the magnetic field strength (B value). At the same time, multiple voice coils can significantly increase the dome support surface, improve the dome strength, and use a thinner dome to achieve the same high-frequency performance, which is conducive to the miniaturization and lightweight of the speaker. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] 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:

[0022] Figure 1 is a stereogram of the loudspeaker of the present invention;

[0023] Figure 2 An exploded view of the speaker of the present invention;

[0024] Figure 3 A schematic diagram of the speaker of the present invention with the diaphragm removed;

[0025] Figure 4 The speaker of the present invention is Figure 1 Sectional view along line AA;

[0026] Figure 5 is a three-dimensional diagram of a first flexible component of a loudspeaker of the present invention;

[0027] Figure 6 is a three-dimensional diagram of a second flexible component of the loudspeaker of the present invention;

[0028] Figure 7 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;

[0029] Reference numerals:

[0030] 100. Speaker;

[0031] 1. Basin stand;

[0032] 2. Vibration system;

[0033] 21, diaphragm; 211, dome; 2111, bending portion; 2111a, opening portion; 212, folding ring portion;

[0034] 22. voice coil assembly; 221. first voice coil; 222. second voice coil;

[0035] 23, first flexible component; 231, first flexible support member; 2311, first elastic arm; 2312, first support portion; 2313, first lead connection portion; 232, conduction portion;

[0036] 24, second flexible component; 241, second flexible support member; 2411, second elastic arm; 2412, second support portion; 2413, second lead connection portion; 2414, pad;

[0037] 3. Magnetic circuit system;

[0038] 31. lower splint; 311. lower splint body; 312. third protruding portion;

[0039] 32. Inner magnetic circuit part; 321. Inner magnetic steel; 322. Inner pole core;

[0040] 33, external magnetic circuit portion; 331, external magnetic steel; 3311, first external magnetic segment; 3312, second protrusion; 3313, second external magnetic segment; 3314, third external magnetic segment; 332, external pole core; 3321, first edge; 3322, first protrusion;

[0041] 34. Magnetic gap. DETAILED DESCRIPTION

[0042] 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.

[0043] like Figure 1-7 As shown, the present invention provides a loudspeaker 100, comprising a basin frame 1, a vibration system 2 and a magnetic circuit system 3 fixed to the basin frame 1, the vibration system 2 comprising a diaphragm 21 fixed to the basin frame 1 and a voice coil assembly 22 driving the diaphragm 21 to vibrate and produce sound, the voice coil assembly 22 comprising a first voice coil 221 and a second voice coil 222 located on a side of the diaphragm 21 close to the magnetic circuit system 3 and arranged side by side along a first direction;

[0044] The vibration system 2 further includes a first flexible component 23 fixed to the basin frame 1 and conducting the first voice coil 221 and the second voice coil 222, and a second flexible component 24 connecting the voice coil component 22 and an external circuit. The first flexible component 23 and the second flexible component 24 are arranged on opposite sides of the voice coil component 22 along a second direction perpendicular to the first direction.

[0045] The first flexible component 23 includes two first flexible support members 231 arranged along a first direction and a conductive portion 232 connecting the two first flexible support members 231 . The first voice coil 221 and the second voice coil 222 are connected in series via the conductive portion 232 .

[0046] By arranging multiple voice coils side by side, the inner diameter circumference of the voice coil can be effectively increased. Under the condition of the same voice coil length (L value), the voice coil wall thickness can be smaller, so that the magnetic gap can be narrower, which can effectively improve the magnetic field strength (B value). At the same time, multiple voice coils can significantly increase the dome support surface, improve the dome strength, and use a thinner dome to achieve the same high-frequency performance, which is conducive to the miniaturization and lightweight of the speaker.

[0047] 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.

[0048] like Figure 2 , Figure 5 As shown, the two first flexible support members 231 each include a first elastic arm 2311 fixed to the basin frame 1, a first support portion 2312 bent and extended from the first elastic arm 2311 in a direction close to the diaphragm 21, and a first lead connection portion 2313 fixed to the diaphragm 21 and bent and extended from the first support portion 2312 in a direction away from the first elastic arm 2311, and the conductive portion 232 connects the two first lead connection portions 2313.

[0049] Further, such as Figure 3 , Figure 6 As shown, the second flexible component 24 includes two second flexible support members 241 arranged along the first direction, and the two second flexible support members 241 each include a second elastic arm 2411 fixed to the basin frame 1, a second support portion 2412 bent and extended from the second elastic arm 2411 in a direction close to the diaphragm 21, and a second lead connection portion 2413 bent and extended from the second support portion 2412 in a direction away from the second elastic arm 2411 and fixed to the diaphragm 21, as shown in FIG. Figure 6 As shown, a pad 2414 for connecting to an external circuit is disposed on the second elastic arm 2411 .

[0050] like Figure 2-4 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 assembly 22 and are respectively surrounded by the first voice coil 221 and the second voice coil 222. Specifically, the first voice coil is arranged around one of the two inner magnetic circuit parts, and the second voice coil is arranged around the other of the two inner magnetic circuit parts. The inner magnetic circuit part 32 and the outer magnetic circuit part 33 jointly form a magnetic gap 34, and the first voice coil 221 and the second voice coil 222 are both inserted in the magnetic gap 34. The magnetic field generated by the voice coil assembly 22 after power is turned on interacts with the magnetic circuit system 3, driving the diaphragm 21 to vibrate and produce sound.

[0051] like Figure 4 As 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, and 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.

[0052] Preferably, Figure 2As shown, the outer pole core 332 includes two first edges 3321 extending along a first direction and two first protrusions 3322 extending from the two first edges 3321 in a direction away from the voice coil assembly 22, respectively. The two first protrusions 3322 are fixedly connected to the basin frame 1. The setting of the first protrusions 3322 can improve the short-axis strength of the speaker and effectively improve the situation where the magnetic steel is damaged due to the speaker falling, while meeting the needs of miniaturization and lightness of the speaker.

[0053] like Figure 2 , Figure 7 As shown, the external magnetic steel 331 includes two first external magnetic segments 3311 extending along the first direction and disposed on opposite sides of the voice coil assembly 22, and two second protrusions 3312 extending from the two first external magnetic segments 3311 in a direction away from the voice coil assembly 22 and fixedly attached to the two first protrusions 3322. The provision of the second protrusions 3312 increases the volume of the magnetic steel in the magnetic circuit system, improves the BL value, and thus makes the sound performance of the speaker more superior.

[0054] Further, such as Figure 2 , Figure 7 As shown, the external magnetic steel 331 also includes two second external magnetic segments 3313 extending along the second direction and arranged on opposite sides of the voice coil assembly 22, and a third external magnetic segment 3314 arranged between the two internal magnetic steels 321. In the present embodiment, the first external magnetic segment, the two second external magnetic segments and the third external magnetic segment are split magnetic steels. Of course, in other embodiments, the first external magnetic segment 3311 and the two second external magnetic segments 3313 can be an integral magnetic steel, or, optionally, the first external magnetic segment 3311, the two second external magnetic segments 3313 and the third external magnetic segment 3314 can also be an integral magnetic steel, and the second protrusion 3312 can be arranged on the integral magnetic steel at a position corresponding to the first protrusion 3322 along the vibration direction of the diaphragm.

[0055] Preferably, Figure 7 As shown, the length d1 of the second outer magnetic segment 3313 along the second direction is greater than the length d2 of the third outer magnetic segment 3314 along the second direction.

[0056] Furthermore, the lower clamping plate 31 includes a lower clamping plate body 311 and a third protrusion 312 extending from the lower clamping plate body 311 in a direction away from the inner magnetic circuit portion 32 . The third protrusion 312 is arranged corresponding to the second protrusion 3312 along the vibration direction and is fitted and fixed to the second protrusion 3312 .

[0057] Furthermore, the diaphragm 21 includes a dome 211 and a folded ring portion 212 arranged around the dome 211, the first voice coil 221 and the second voice coil 222 are fixed to the dome 211, the dome 211 includes a bent portion 2111 that extends from the outer edge of the dome 211 toward the direction close to the magnetic circuit system 3 and abuts against the first flexible support member 231, the bent portion 2111 is provided with an opening portion 2111a that avoids the first protrusion 3322, and the setting of the opening portion 2111a can make the structure of the speaker more compact, so as to meet the requirements of miniaturization and lightness, and is a more preferred embodiment of the present invention.

[0058] Compared with the related art, the speaker of the present invention can effectively increase the inner diameter circumference of the voice coil by arranging multiple voice coils side by side. Under the condition of the same voice coil length (L value), the wall thickness can be smaller, so that the magnetic gap can be smaller, which can effectively improve the magnetic field strength (B value); at the same time, multiple voice coils can significantly increase the dome support surface, improve the dome strength, and use a thinner dome to achieve the same high-frequency performance, which is conducive to the miniaturization and lightweight of the speaker.

[0059] 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 and a magnetic circuit system fixed to the basin frame, wherein the vibration system comprises a diaphragm fixed to the basin frame and a voice coil assembly driving the diaphragm to vibrate and generate sound; characterized in that: The voice coil assembly comprises a first voice coil and a second voice coil which are located on a side of the diaphragm close to the magnetic circuit system and are arranged side by side along a first direction; The vibration system further includes a first flexible component fixed to the basin frame and conducting the first voice coil and the second voice coil, and a second flexible component connecting the voice coil component and an external circuit, wherein the first flexible component and the second flexible component are arranged on opposite sides of the voice coil component along a second direction perpendicular to the first direction; The first direction and the second direction are both perpendicular to the vibration direction of the diaphragm, The first flexible component includes two first flexible supporting members arranged along the first direction and a conducting portion connecting the two first flexible supporting members, and the first voice coil and the second voice coil are connected in series through the conducting portion; The two first flexible support members each include a first elastic arm fixed to the basin frame, a first support portion bent and extended from the first elastic arm in a direction close to the diaphragm, and a first lead connection portion fixed to the diaphragm and bent and extended from the first support portion in a direction away from the first elastic arm, and the conductive portion connects the two first lead connection portions.

2. The loudspeaker according to claim 1, characterized in that: The second flexible component includes two second flexible support members arranged along the first direction, each of the two second flexible support members includes a second elastic arm fixed to the basin frame, a second support portion bent and extended from the second elastic arm in a direction close to the diaphragm, and a second lead connection portion bent and extended from the second support portion in a direction away from the second elastic arm and fixed to the diaphragm, and the second elastic arm is provided with a soldering pad for connecting an external circuit.

3. The loudspeaker according to claim 1, characterized in that: 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 first voice coil is arranged around one of the two inner magnetic circuit parts, the second voice coil is arranged around the other of the two inner magnetic circuit parts, the two inner magnetic circuit parts and the outer magnetic circuit part jointly form a magnetic gap, and the first voice coil and the second voice coil are both inserted into the magnetic gap.

4. The loudspeaker according to claim 3, characterized in that: 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.

5. The loudspeaker according to claim 4, characterized in that: The outer pole core includes two first sides extending along the first direction and two first protrusions extending from the two first sides in directions away from the voice coil assembly, respectively. The two first protrusions are fixedly connected to the basin frame.

6. The loudspeaker according to claim 5, characterized in that: The external magnetic steel includes two first external magnetic segments extending along the first direction and arranged on opposite sides of the voice coil assembly, and two second protrusions extending from the two first external magnetic segments in a direction away from the voice coil assembly and fixedly fitted with the two first protrusions.

7. The loudspeaker according to claim 6, characterized in that: The lower clamping plate includes a lower clamping plate body and a third protrusion extending from the lower clamping plate body in a direction away from the inner magnetic circuit portion. The third protrusion is arranged corresponding to the second protrusion along the vibration direction of the diaphragm and is fitted and fixed to the second protrusion.

8. The loudspeaker according to claim 4, characterized in that: The external magnetic steel also includes two second external magnetic segments extending along the second direction and arranged on opposite sides of the voice coil assembly, and a third external magnetic segment arranged between the two internal magnetic steels, and the length d1 of the second external magnetic segment along the second direction is greater than the length d2 of the third external magnetic segment along the second direction.

9. The loudspeaker according to claim 5, characterized in that: The diaphragm includes a ball top and a folded ring portion arranged around the ball top, the first voice coil and the second voice coil are fixed to the ball top, the ball top includes a bent portion extending from the outer edge of the ball top toward the direction close to the magnetic circuit system and abutting against the first flexible support member, and the bent portion is provided with an opening portion to avoid the first protrusion.

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