speaker

Abstract

The present invention relates to the field of electroacoustic conversion technology, and provides a speaker. The vibration system of the speaker of the present invention includes a main sound-emitting unit and at least one auxiliary sound-emitting unit, the magnetic circuit system drives the main sound-emitting unit to vibrate and emit sound in a first direction, and the magnetic circuit system drives the auxiliary sound-emitting unit to vibrate and emit sound in a second direction, the first direction and the second direction are perpendicular to each other, and the main sound-emitting unit and the auxiliary sound-emitting unit can share the magnetic circuit system, which can reduce costs and installation difficulty, achieve reliable connection, and improve the performance of the speaker.

Description

Technical Field

[0001] The present invention relates to the technical field of electroacoustic conversion, and in particular to a loudspeaker. Background Art

[0002] With the popularity of mobile electronic devices, mobile electronic devices are gradually developing towards multifunctionality. Among them, high-quality music function has become one of the common functions of mobile electronic devices, and speakers for playing sound are widely used in mobile electronic devices. Speakers in related technologies are generally single-sided, and the frequency response is limited by the product size, making it difficult to achieve full-band performance improvement.

[0003] In order to achieve better sound effects, speakers are generally designed to be able to emit sound from both sides, that is, double-sided sound speakers. Double-sided sound speakers are equipped with two sets of magnetic circuit systems and vibration systems. The two sets of magnetic circuit systems play their own roles and are matched with a vibration system respectively, so as to achieve the purpose of making the speaker have better sound effects. Since double-sided sound speakers are equipped with two sets of magnetic circuit systems, not only the cost is increased, but also the connection and installation are difficult, which can easily cause unreliable connection and affect the overall performance of the speaker.

[0004] Therefore, it is necessary to provide a new speaker. Summary of the invention

[0005] The object of the present invention is to provide a speaker that can solve the problem that a double-sided sound-emitting speaker is provided with two sets of magnetic circuit systems, which not only increases the cost but also has unreliable connections, thereby affecting the overall performance of the speaker.

[0006] The technical solution of the present invention is as follows: a speaker, comprising a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and produce sound, characterized in that the vibration system comprises a main sound-emitting unit and at least one auxiliary sound-emitting unit, the magnetic circuit system drives the main sound-emitting unit to vibrate and produce sound along a first direction, and the magnetic circuit system drives the auxiliary sound-emitting unit to vibrate and produce sound along a second direction, and the first direction and the second direction are perpendicular to each other.

[0007] Preferably, the magnetic circuit system includes a main magnetic yoke, a main magnetic part fixed to the main magnetic yoke, a main pole plate covering the main magnetic part on a side away from the main magnetic yoke, an auxiliary magnetic part arranged in an annular manner on the main magnetic part and spaced from the main magnetic part to form a first magnetic gap, an edge magnetic part arranged on a side away from the main magnetic part and spaced from the auxiliary magnetic part to form a second magnetic gap, and an annular auxiliary magnetic yoke fixed to the auxiliary magnetic part on a side away from the main magnetic yoke, and the auxiliary magnetic yoke is fixed to the basin frame.

[0008] Preferably, the basin frame is rectangular, and includes two first side walls extending along the major axis direction and spaced apart, and two second side walls extending along the minor axis direction and spaced apart, the secondary magnetic portion includes two first secondary magnets relatively spaced apart along the minor axis direction, and two second secondary magnets relatively spaced apart along the major axis direction, and the side magnetic portion is arranged on the side of the first secondary magnet away from the main magnetic portion.

[0009] Preferably, the first secondary magnet includes a main body section and a platform section arranged on a side of the main body section close to the edge magnet portion, in the first direction, the height of the platform section is smaller than the height of the main body section, the height of the main body section is the same as the height of the second secondary magnet, the height of the platform section is the same as the height of the edge magnet portion, and the secondary magnetic yoke, the first secondary magnet and the edge magnet portion are surrounded to form a receiving cavity.

[0010] Preferably, the main sound unit includes a first diaphragm fixed to the basin frame, a first frame fixed to the side of the first diaphragm facing the magnetic circuit system, a first voice coil fixed to the first frame and inserted in the first magnetic gap, and two elastic support members arranged at intervals on opposite sides of the first voice coil along the long axis direction, and the elastic support members are fixed to the first frame and the basin frame.

[0011] Preferably, the auxiliary sound-emitting unit includes a second diaphragm fixed to the first side wall of the basin frame and the main magnetic yoke, a second voice coil accommodated in the accommodating cavity, and a connecting piece for connecting the second diaphragm and the second voice coil. The auxiliary sound-emitting unit utilizes edge magnets to drive the second voice coil to vibrate along the second direction in the accommodating cavity, and drives the second diaphragm to vibrate and produce sound. The edge magnets include the edge magnet portion and the first secondary magnet.

[0012] Preferably, the connecting member includes a first vertical segment extending along the first direction, a horizontal segment extending along the second direction, and a second vertical segment extending along the first direction, the second diaphragm is fixed to the first vertical segment, and the second voice coil is fixed to the second vertical segment.

[0013] Preferably, the second diaphragm includes a ring portion which is annular and has an arc-shaped structure, a vibrating portion connected to the inner edge of the ring portion, and a fixing portion connected to the outer edge of the ring portion, the opposite sides of the fixing portion are respectively fixed to the basin frame and the main magnetic yoke, and the ring portion protrudes on the side facing away from the magnetic circuit system.

[0014] Preferably, the magnetizing magnetic circuit of the edge magnet portion and the first auxiliary magnet is a two-stage magnetizing magnetic circuit, and is an integrated segmented magnetizing circuit or a split magnetizing circuit.

[0015] Preferably, the vibration system comprises two auxiliary sound-emitting units, and the two auxiliary sound-emitting units are arranged relatively spaced apart along the short axis direction.

[0016] The beneficial effects of the present invention are as follows: the vibration system includes a main sound-emitting unit and at least one auxiliary sound-emitting unit, the magnetic circuit system drives the main sound-emitting unit to vibrate and emit sound along a first direction, and the magnetic circuit system drives the auxiliary sound-emitting unit to vibrate and emit sound along a second direction, the first direction and the second direction are perpendicular to each other, and by sharing the magnetic circuit system between the main sound-emitting unit and the auxiliary sound-emitting unit, the cost and the difficulty of installation can be reduced, and the effect of reliable connection and improved performance of the speaker can be achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 FIG. 4 is a schematic diagram of the three-dimensional structure of a loudspeaker according to an embodiment of the present invention.

[0018] Figure 2 FIG. 4 is a schematic diagram of the exploded structure of a loudspeaker according to an embodiment of the present invention.

[0019] Figure 3 for Figure 1 Section view along line AA.

[0020] Figure 4 for Figure 1 Cross-sectional view along line BB.

[0021] Figure 5 Schematic diagram of the structure of a connecting piece according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the assembly structure of the magnetic circuit system and the auxiliary sound unit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0023] The present invention will be further described below in conjunction with the accompanying drawings and implementation modes.

[0024] See also Figure 1-Figure 4 The speaker 100 of the embodiment of the present invention includes a basin frame 10, a vibration system 20 and a magnetic circuit system 30.

[0025] See also Figure 1-Figure 4 The basin frame 10 is used to support the vibration system 20 and the magnetic circuit system 30. The magnetic circuit system 30 has a first magnetic gap 301. The magnetic circuit system 30 is used to drive the vibration system 20 to vibrate and generate sound. In this embodiment, the basin frame 10 is rectangular and includes two first side walls 11 extending along the long axis direction and spaced apart and two second side walls 12 extending along the short axis direction and spaced apart.

[0026] See also Figure 1-Figure 4The vibration system 20 includes a main sound unit 21 and at least one auxiliary sound unit 22. The magnetic circuit system 30 drives the main sound unit 21 to vibrate and produce sound in a first direction, and the magnetic circuit system 30 drives the auxiliary sound unit 22 to vibrate and produce sound in a second direction. The first direction and the second direction are perpendicular to each other. In this embodiment, the first direction is the Z direction, and the second direction is the X direction. By sharing the magnetic circuit system 30 between the main sound unit 21 and the auxiliary sound unit 22, the cost and installation difficulty can be reduced, and the connection can be reliable, thereby improving the performance of the speaker 100.

[0027] One or two auxiliary sound generating units 22 can be provided, and the specific number can be designed according to actual needs. In this embodiment, the vibration system 20 includes two auxiliary sound generating units 22, which are arranged relatively spaced apart along the short axis direction and are respectively fixed to the first side wall 11 of the basin frame 10.

[0028] See also Figure 2 and Figure 3 The main sound unit 21 includes a first diaphragm 211 fixed to the basin frame 10, a first frame 212 fixed to the side of the first diaphragm 211 facing the magnetic circuit system 30, a first voice coil 213 fixed to the first frame 212 and inserted in the first magnetic gap 301, and two elastic support members 214 spaced apart along the long axis direction at opposite sides of the first voice coil 213, and the elastic support member 214 is fixed to the first frame 212 and the basin frame 10. When the speaker 100 is powered on, the first voice coil 213 vibrates along the first direction under the action of the magnetic circuit system 30, driving the first frame 212 to drive the first diaphragm 211 and the elastic support member 214 to vibrate and sound along the first direction, and the setting of the elastic support member 214 is used to suppress the lateral swing of the first voice coil 213, so as to obtain a better sound effect.

[0029] For details, see Figure 2 and Figure 3 The first diaphragm 211 includes a first vibrating portion 2111, a first folding ring portion 2112 extending from the periphery of the first vibrating portion 2111, a first fixing portion 2113 extending from the side of the first folding ring portion 2112 away from the first vibrating portion 2111, a through hole 2110 penetrating the first vibrating portion 2111 along a first direction, and a dome 2114 covering the first vibrating portion 2111 and completely covering the through hole 2110. The first fixing portion 2113 is fixed to the basin frame 10, the first vibrating portion 2111 is fixed to the first frame 212, and the first folding ring portion 2112 is an arc-shaped structure, protruding toward one side of the magnetic circuit system 30.

[0030] The side of the first frame 212 facing away from the magnetic circuit system 30 is connected to the first diaphragm 211 , and the side of the first frame 212 facing the magnetic circuit system 30 is connected to the first voice coil 213 , and is supported and fixed on the elastic support member 214 .

[0031] See also Figure 2 and Figure 3 The elastic support member 214 includes a flexible circuit board 2141 and a buffer diaphragm 2142 stacked along a first direction. The flexible circuit board 2141 is fixed to the basin frame 10 and the first frame 212, respectively. The flexible circuit board 2141 is electrically connected to the first voice coil 213. The buffer diaphragm 2142 has an arc-shaped structure, and the protruding direction of the buffer diaphragm 2142 is the same as the protruding direction of the first diaphragm 211. Specifically, the first diaphragm 211 protrudes toward one side of the magnetic circuit system 30, and the buffer diaphragm 2142 also protrudes toward one side of the magnetic circuit system 30.

[0032] See also Figure 2 and Figure 4 The auxiliary sound unit 22 includes a second diaphragm 221 fixed to the first side wall 11 of the basin frame 10, a connector 222 connected to the second diaphragm 221, and a second voice coil 223 fixed to the connector 222. The magnetic circuit system 30 drives the second voice coil 223 to vibrate along the second direction, and drives the second diaphragm 221 to vibrate and produce sound. Since the prior art speaker realizes single-sided sound through the main sound unit 21, the frequency response is limited by the product size, and it is difficult to achieve full-band performance improvement. In this embodiment, the main sound unit 21 realizes Z-direction sound, and at the same time, the auxiliary sound unit 22 increases the side X-direction sound, which can make up for the performance defects of the main sound unit 21, such as high-frequency peaks and valleys.

[0033] For details, see Figure 2 The second diaphragm 221 includes a second folding ring portion 2211 that is annular and has an arc-shaped structure, a second vibrating portion 2212 connected to the inner edge of the second folding ring portion 2211, and a second fixing portion 2213 connected to the outer edge of the second folding ring portion 2211. The second fixing portion 2213 is fixed to the basin frame 10, and the second folding ring portion 2211 protrudes on the side away from the magnetic circuit system 30.

[0034] See also Figure 5 The connecting member 222 includes a first vertical section 2221 extending along the first direction, a horizontal section 2222 extending along the second direction, and a second vertical section 2223 extending along the first direction. The first vertical section 2221, the horizontal section 2222, and the second vertical section 2223 are collectively arranged to form a U-shaped groove. The second diaphragm 221 is fixed to the first vertical section 2221, and the second voice coil 223 is fixed to the second vertical section 2223.

[0035] See also Figure 2-Figure 4 , Figure 6The magnetic circuit system 30 includes a main magnetic yoke 31, a main magnetic portion 32 fixed to the main magnetic yoke 31, a main pole plate 33 covering the main magnetic portion 32 on a side away from the main magnetic yoke 31, an auxiliary magnetic portion 34 annularly arranged on the main magnetic portion 32 and spaced apart from the main magnetic portion 32 to form a first magnetic gap 301, a side magnetic portion 35 arranged on a side away from the main magnetic portion 32 and spaced apart from the auxiliary magnetic portion 34 to form a second magnetic gap 302, and an annular auxiliary magnetic yoke 36 fixed to the auxiliary magnetic portion 34 on a side away from the main magnetic yoke 31.

[0036] The main yoke 31 can be used for magnetic conduction to improve driving force. The main yoke 31 fixes the main magnetic part 32, the auxiliary magnetic part 34 and the edge magnetic part 35. The main yoke 31 also fixes the second fixing part 2213 of the second diaphragm 221. The auxiliary magnetic part 34 is arranged around the circumference of the main magnetic part 32.

[0037] See also Figure 2 and Figure 4 The auxiliary yoke 36 is fixed to the basin frame 10. The auxiliary yoke 36 is annular and includes an annular connecting portion 361 and a cavity 306 formed in the connecting portion 361. The connecting portion 361 of the auxiliary yoke 36 fixes the auxiliary magnetic portion 34. The first voice coil 213 passes through the cavity 306 and is inserted into the first magnetic gap 301.

[0038] The secondary magnetic part 34 includes two first secondary magnets 341 disposed at intervals along the short axis direction and two second secondary magnets 342 disposed at intervals along the long axis direction.

[0039] See also Figure 6 The first secondary magnet 341 includes a main body section 3411 and a platform section 3412 arranged on the side of the main body section 3411 close to the edge magnet portion 35. In the first direction, the height of the platform section 3412 is less than the height of the main body section 3411, the height of the main body section 3411 is the same as the height of the second secondary magnet 342, and the height of the platform section 3412 is the same as the height of the edge magnet portion 35.

[0040] See also Figure 4 and Figure 6 The side magnet part 35 is arranged on the side of the first secondary magnet 341 away from the main magnet part 32. The side magnet part 35 and the first secondary magnet 341 form a side magnet, and the secondary magnetic yoke 36, the first secondary magnet 341 and the side magnet part 35 surround and form a receiving cavity 40. The auxiliary sound unit 22 drives the second voice coil 223 to vibrate along the second direction in the receiving cavity 40 by using the side magnet, and drives the second diaphragm 221 to vibrate and produce sound.

[0041] Furthermore, the magnetizing magnetic circuit of the edge magnet is a two-stage magnetizing magnetic circuit, and the edge magnet can be an integrated segmented magnetization or a split magnetization. In this embodiment, the edge magnet is a split magnetization, that is, the magnetizing magnetic circuit of the edge magnet portion 35 and the first secondary magnet 341 is a two-stage magnetizing magnetic circuit, and is a split magnetization. In this embodiment, two edge magnet portions 35 are provided, and one edge magnet portion 35 matches one first secondary magnet 341.

[0042] The main pole plate 33 is used for conducting magnetism and improving driving force.

[0043] In the embodiment of the present invention, the first auxiliary magnet 341 is symmetrically arranged, the second auxiliary magnet 342 is symmetrically arranged, and the first auxiliary magnet 341 is a shared magnet, which further improves the magnetic circuit symmetry of the magnetic circuit system 30, reduces the cost and assembly difficulty, and thus improves the sound performance of the speaker 100.

[0044] The above description is only an implementation mode of the present invention. It should be pointed out that, for ordinary technicians in this field, improvements can be made without departing from the creative concept of the present invention, but these all belong to the protection scope of the present invention.

Claims

1. A speaker, comprising a basin frame, a vibration system respectively fixed to the basin frame, and a magnetic circuit system for driving the vibration system to vibrate and generate sound, characterized in that: The vibration system includes a main sound-generating unit and at least one auxiliary sound-generating unit, the magnetic circuit system drives the main sound-generating unit to vibrate and generate sound in a first direction, and the magnetic circuit system drives the auxiliary sound-generating unit to vibrate and generate sound in a second direction, and the first direction and the second direction are perpendicular to each other; The magnetic circuit system includes a main yoke, a main magnetic part fixed to the main yoke, a main pole plate covering the main magnetic part on a side away from the main yoke, an auxiliary magnetic part arranged around the main magnetic part and spaced from the main magnetic part to form a first magnetic gap, an edge magnetic part arranged on a side away from the main magnetic part and spaced from the auxiliary magnetic part to form a second magnetic gap, and an annular auxiliary yoke fixed to the auxiliary magnetic part on a side away from the main yoke, wherein the auxiliary yoke is fixed to the basin frame.

2. The loudspeaker according to claim 1, characterized in that: The basin frame is rectangular, and includes two first side walls extending along the long axis direction and spaced apart, and two second side walls extending along the short axis direction and spaced apart, the secondary magnetic portion includes two first secondary magnets spaced apart relatively along the short axis direction, and two second secondary magnets spaced apart relatively along the long axis direction, and the side magnetic portion is arranged on the side of the first secondary magnet away from the main magnetic portion.

3. The loudspeaker according to claim 2, characterized in that: The first secondary magnet includes a main body section and a platform section arranged on one side of the main body section close to the edge magnet portion. In the first direction, the height of the platform section is smaller than the height of the main body section, the height of the main body section is the same as the height of the second secondary magnet, the height of the platform section is the same as the height of the edge magnet portion, and the secondary magnetic yoke, the first secondary magnet and the edge magnet portion are surrounded by a receiving cavity.

4. The loudspeaker according to claim 3, characterized in that: The main sound unit includes a first diaphragm fixed to the basin frame, a first frame fixed to the first diaphragm on the side facing the magnetic circuit system, a first voice coil fixed to the first frame and inserted in the first magnetic gap, and two elastic support members arranged at intervals on opposite sides of the first voice coil along the long axis direction, and the elastic support members are fixed to the first frame and the basin frame.

5. The loudspeaker according to claim 3, characterized in that: The auxiliary sound unit includes a second diaphragm fixed to the first side wall of the basin frame and the main magnetic yoke, a second voice coil accommodated in the accommodation cavity, and a connecting piece for connecting the second diaphragm and the second voice coil. The auxiliary sound unit uses edge magnets to drive the second voice coil to vibrate along the second direction in the accommodation cavity, and drives the second diaphragm to vibrate and produce sound. The edge magnets include the edge magnet portion and the first secondary magnet.

6. The loudspeaker according to claim 5, characterized in that: The connecting member includes a first vertical segment extending along the first direction, a horizontal segment extending along the second direction, and a second vertical segment extending along the first direction. The second diaphragm is fixed to the first vertical segment, and the second voice coil is fixed to the second vertical segment.

7. The loudspeaker according to claim 5, characterized in that: The second diaphragm includes a ring portion that is annular and has an arc-shaped structure, a vibrating portion connected to the inner edge of the ring portion, and a fixing portion connected to the outer edge of the ring portion. The opposite sides of the fixing portion are respectively fixed to the basin frame and the main magnetic yoke, and the ring portion protrudes on the side facing away from the magnetic circuit system.

8. The loudspeaker according to claim 5, characterized in that: The magnetizing magnetic circuits of the edge magnet portion and the first auxiliary magnet are two-stage magnetizing magnetic circuits, and are integrated segmented magnetizing or split magnetizing.

9. The loudspeaker according to claim 2, characterized in that: The vibration system comprises two auxiliary sound-emitting units, and the two auxiliary sound-emitting units are arranged relatively spaced apart along the short axis direction.

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