Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises two structural units, each structural unit comprises a basin stand, a U iron, a central magnetic structure, an annular magnetic structure, a high pitch vibration assembly, a support frame and a low pitch vibration assembly, and the enclosure wall of the U iron is connected with the basin stand; the annular magnetic structure surrounds the central magnetic structure and is arranged on the U iron, a high-pitch magnetic gap is formed between the annular magnetic structure and the central magnetic structure, and a through hole communicated with the high-pitch magnetic gap is formed in the U iron; the high-pitch vibration assembly comprises a high-pitch diaphragm assembly; the supporting frame is arranged at the top of the annular magnetic structure, the supporting frame is provided with an extending edge extending inwards, and at least part of the area of the extending edge extends to the position above the high-pitch vibrating diaphragm assembly; the bass vibration assembly comprises a bass diaphragm assembly, the whole bass diaphragm assembly is in a ring frame shape, the inner edge of the bass diaphragm assembly is connected with the extension edge, and the outer edge of the bass diaphragm assembly is connected with the basin stand; and the U irons of the two structural units in the sounding unit are connected with each other. The sounding unit is novel in structure, small in size and good in working stability.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic converters, in particular to a sound generating unit. Background Art

[0002] Nowadays, mobile terminals such as mobile phones and tablets are enriching people's lives, and electroacoustic converters play an indispensable role as audio devices.

[0003] As consumers' demands for overall sound quality and loudness continue to rise, so too do the demands on the sound units. To achieve a better experience, multiple sound units are often placed within a single speaker, including a woofer, midrange unit, and tweeter. Filters are used to remove excess frequencies and retain the desired effective bandwidth. While this improves sound quality, the speaker also becomes larger and heavier, increasing costs. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a novel high and low frequency coaxial sound generating unit with a compact volume.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: the sound-generating unit includes two structural units, and the structural units include:

[0006] basin rack;

[0007] A U-iron, the walls of which are connected to the basin frame;

[0008] A central magnetic structure, the central magnetic structure is provided on the U iron;

[0009] an annular magnetic structure, the annular magnetic structure is arranged on the U iron around the central magnetic structure, a treble magnetic gap is formed between the annular magnetic structure and the central magnetic structure, a woofer magnetic gap is formed between the surrounding wall of the U iron and the annular magnetic structure, and the U iron is provided with a through hole communicating with the treble magnetic gap;

[0010] A tweeter vibration assembly, the tweeter vibration assembly comprising a connected tweeter diaphragm assembly and a tweeter voice coil, the tweeter diaphragm assembly being connected to the annular magnetic structure, and the tweeter voice coil being arranged corresponding to the tweeter magnetic gap;

[0011] a support frame, the support frame being arranged on top of the annular magnetic structure, the support frame having an inwardly extending extension edge, at least a portion of the extension edge extending above the tweeter diaphragm assembly;

[0012] A bass vibration assembly, the bass vibration assembly comprising a connected bass diaphragm assembly and a bass voice coil, the bass diaphragm assembly being in the shape of a ring frame as a whole, the inner edge of the bass diaphragm assembly being connected to the extended edge, the outer edge of the bass diaphragm assembly being connected to the basin frame, and the bass voice coil being arranged corresponding to the bass magnetic gap;

[0013] The U irons of the two structural units in the sound-generating unit are connected to each other, and the treble magnetic gaps of the two structural units are connected through the through hole.

[0014] In one embodiment, the U iron in one structural unit and the U iron in another structural unit are an integral structure formed by integral processing.

[0015] In one embodiment, there are multiple through holes on the U iron, and the multiple through holes are evenly distributed along the tweeter magnetic gap.

[0016] In one embodiment, the two structural units are symmetrically arranged.

[0017] In one embodiment, in the structural unit, the tweeter diaphragm assembly includes a tweeter diaphragm, and the tweeter diaphragm includes a tweeter inner fixed part, a tweeter folding ring part and a tweeter outer fixed part connected in sequence from the inside to the outside, the tweeter outer fixed part is connected to the annular magnetic structure, and at least a portion of the extended edge is located directly above the tweeter folding ring part.

[0018] In one embodiment, the tweeter diaphragm assembly further includes a tweeter dome, and the tweeter dome is disposed on the tweeter inner fixing portion.

[0019] In one embodiment, a portion of the extended edge extends to directly above the tweeter inner fixing portion.

[0020] In one embodiment, in the structural unit, the support frame includes a vertical wall, the top end of the vertical wall is bent and extended inward to form the extended edge, the bass diaphragm assembly includes a bass diaphragm, and the bass diaphragm includes a bass inner fixed part, an inner folding ring part, a connecting part, an outer folding ring part and a bass outer fixed part connected in sequence from the inside to the outside, the bass outer fixed part is connected to the basin frame, the bass inner fixed part is connected to the extended edge, and the connection between the bass inner fixed part and the extended edge is arranged away from the vertical wall.

[0021] In one embodiment, the extended edge has a bending portion, which divides the extended edge into an inner edge and an outer edge, the outer edge is connected to the vertical wall, the top surface of the inner edge is set higher than the top surface of the outer edge, and the bass internal fixing portion is connected to the top surface of the inner edge.

[0022] In one embodiment, the bass diaphragm assembly further includes a bass dome, which is in the shape of a ring frame as a whole and is connected to the connecting portion.

[0023] The beneficial effects of the present invention are as follows: the structure of the sound unit is novel and compact, the tweeter system is located in the middle of the woofer system, and the saturation area of the bass magnetic circuit is utilized to maximize the utilization of the magnetic energy product; the setting of the support frame allows the inner edge of the bass diaphragm assembly to extend to the top of the tweeter diaphragm assembly, and the bass compliance is increased by staggering, thereby increasing the low-frequency response bandwidth, so that the bass performance of the sound unit is effectively improved; the tweeter system and the woofer system are not designed to share a cavity, and the tweeter system has an independent back cavity, so the tweeter system and the woofer system will not interfere with each other, which is conducive to ensuring the performance of the sound unit. The use of a double-sided sound structure further improves the acoustic performance. At the same time, the double-sided coaxial anti-phase operation can also play a vibration reduction role, so that the sound unit has more reliable working stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0025] Figure 1 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0027] Description of Figure Numbers:

[0028] 1. Basin rack;

[0029] 2. U iron; 21. surrounding wall; 22. through hole;

[0030] 3. Central magnetic structure;

[0031] 4. Ring magnetic structure;

[0032] 51. Tweeter diaphragm assembly; 511. Tweeter inner fixing portion; 512. Tweeter surround; 513. Tweeter outer fixing portion; 52. Tweeter voice coil;

[0033] 6. Support frame; 61. Vertical wall; 62. Extended edge; 621. Bend portion; 622. Inner edge; 623. Outer edge;

[0034] 71. Bass diaphragm assembly; 711. Bass inner fixing portion; 712. Inner folding ring portion; 713. Connecting portion; 714. Outer folding ring portion; 715. Bass outer fixing portion; 72. Bass voice coil;

[0035] 8. Structural unit. DETAILED DESCRIPTION

[0036] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments.

[0037] 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 embodiments described 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 this field without making creative efforts are within the scope of protection of the present invention.

[0038] It should be noted that if the embodiments of the present invention involve directional indications such as up, down, left, right, front, back, etc., then the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indications will also change accordingly.

[0039] In addition, if the embodiments of the present invention include descriptions of "first," "second," etc., such descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of the technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one of such features.

[0040] In addition, if the word "and / or" appears throughout the text, it means that three parallel solutions are included. For example, "and / or" includes solutions, or solutions, or solutions that meet all of the requirements simultaneously. In addition, the technical solutions of various embodiments may be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. If the combination of technical solutions is mutually contradictory or cannot be implemented, it shall be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0041] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0042] Example 1

[0043] Please refer to Figure 1 and Figure 2 , Embodiment 1 of the present utility model is: a sound-emitting unit, comprising two structural units 8, the structural unit 8 comprising a basin 1, a U iron 2, a central magnetic structure 3, an annular magnetic structure 4, a treble vibration component, a support frame 6 and a bass vibration component, the surrounding wall 21 of the U iron 2 is connected to the basin 1, the central magnetic structure 3 is arranged on the U iron 2, the annular magnetic structure 4 is arranged on the U iron 2 around the central magnetic structure 3, a treble magnetic gap is formed between the annular magnetic structure 4 and the central magnetic structure 3, a through hole 22 is provided on the U iron 2 connecting the treble magnetic gap, a woofer magnetic gap is formed between the surrounding wall 21 of the U iron 2 and the annular magnetic structure 4; the treble vibration component comprises a connected treble diaphragm component 51 and a treble voice coil 52, the treble diaphragm component 51 is connected to the annular magnetic structure 4, and the treble voice coil 52 is arranged corresponding to the treble magnetic gap; the support The frame 6 is arranged on the top of the annular magnetic structure 4, and the support frame 6 has an inwardly extending extension edge 62, and at least part of the extension edge 62 extends to the top of the tweeter diaphragm assembly 51; the bass vibration assembly includes a connected bass diaphragm assembly 71 and a bass voice coil 72, and the bass diaphragm assembly 71 is in the shape of a ring frame as a whole, the inner edge of the bass diaphragm assembly 71 is connected to the extension edge 62, and the outer edge of the bass diaphragm assembly 71 is connected to the basin frame 1, and the bass voice coil 72 is arranged corresponding to the bass magnetic gap; the U irons 2 of the two structural units 8 in the sound-emitting unit are connected to each other, and the tweeter magnetic gaps of the two structural units 8 are connected through the through hole 22, the vibration phases of the two bass diaphragm assemblies 71 in the two structural units 8 are opposite, and the vibration phases of the two tweeter diaphragm assemblies 51 in the two structural units 8 are opposite.

[0044] In this embodiment, the U-irons 2 in the two structural units 8 are independent structural members, and the two are fixedly connected by gluing, welding, or other means. In other embodiments, the U-iron 2 in one structural unit 8 and the U-iron 2 in another structural unit 8 can also be integrally formed into an integrated structure, which can reduce the number of components of the sound unit.

[0045] In order to allow the air to circulate more smoothly when the tweeter system of the sound unit is working, there are multiple through holes 22 on the U iron 2, and the multiple through holes 22 are evenly distributed along the tweeter magnetic gap.

[0046] As a preferred embodiment, the two structural units 8 are symmetrically arranged.

[0047] The central magnetic structure 3 includes a central magnetic steel and a central washer, the central magnetic steel connects the central washer and the U iron 2, the annular magnetic structure 4 includes an annular magnetic steel and annular washer, the annular magnetic steel connects the U iron 2 and the annular washer, the annular washer is aligned or roughly aligned with the central washer, the support frame 6 is directly or indirectly connected to the annular washer, and the tweeter diaphragm assembly 51 is directly or indirectly connected to the annular washer.

[0048] In the structural unit 8, the tweeter diaphragm assembly 51 includes a tweeter diaphragm, which includes a tweeter inner fixing portion 511, a tweeter folding portion 512, and a tweeter outer fixing portion 513, which are sequentially connected from the inside to the outside. The tweeter outer fixing portion 513 is connected to the annular magnetic structure 4, and at least a portion of the extended edge 62 is located directly above the tweeter folding portion 512. Optionally, the tweeter diaphragm assembly 51 also includes a tweeter dome, which is provided on the tweeter inner fixing portion 511.

[0049] The support frame 6 includes a vertical wall 61, the top of the vertical wall 61 is bent and extended inward to form the extended edge 62, the bass diaphragm assembly 71 includes a bass diaphragm, and the bass diaphragm includes a bass inner fixing part 711, an inner folding ring part 712, a connecting part 713, an outer folding ring part 714 and a bass outer fixing part 715 connected in sequence from the inside to the outside, the bass outer fixing part 715 is connected to the basin frame 1, the bass inner fixing part 711 is connected to the extended edge 62, and the connection between the bass inner fixing part 711 and the extended edge 62 is set away from the vertical wall 61.

[0050] As a preferred embodiment, in the structural unit 8, a partial area of the extended edge 62 extends to directly above the tweeter inner fixed portion 511, so that the cross-sectional arc length of the inner folding ring portion 712 can be set longer, thereby improving the bass compliance to a greater extent.

[0051] In this embodiment, the extended edge 62 has a bent portion 621, which divides the extended edge 62 into an inner edge 622 and an outer edge 623. The outer edge 623 is connected to the vertical wall 61. The top surface of the inner edge 622 is higher than the top surface of the outer edge 623. The bass inner fixing portion 711 is connected to the top surface of the inner edge 622. The top surface of the inner edge 622 is higher than the top surface of the outer edge 623 to provide a larger deformation space for the inner folding ring portion 712, thereby preventing the inner folding ring portion 712 from colliding with the extended edge 62 during vibration of the bass diaphragm assembly 71 and generating noise.

[0052] The bass diaphragm assembly 71 further includes a bass dome, which is in the shape of a ring frame as a whole and is connected to the connecting portion 713 .

[0053] The above are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the practical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A sound unit, characterized in that: Comprising two structural units, the structural units include basin rack; A U-iron, the walls of which are connected to the basin frame; A central magnetic structure, the central magnetic structure is provided on the U iron; an annular magnetic structure, the annular magnetic structure is arranged on the U iron around the central magnetic structure, a treble magnetic gap is formed between the annular magnetic structure and the central magnetic structure, a woofer magnetic gap is formed between the surrounding wall of the U iron and the annular magnetic structure, and the U iron is provided with a through hole communicating with the treble magnetic gap; A tweeter vibration assembly, the tweeter vibration assembly comprising a connected tweeter diaphragm assembly and a tweeter voice coil, the tweeter diaphragm assembly being connected to the annular magnetic structure, and the tweeter voice coil being arranged corresponding to the tweeter magnetic gap; a support frame, the support frame being arranged on top of the annular magnetic structure, the support frame having an inwardly extending extension edge, at least a portion of the extension edge extending above the tweeter diaphragm assembly; A bass vibration assembly, the bass vibration assembly comprising a connected bass diaphragm assembly and a bass voice coil, the bass diaphragm assembly being in the shape of a ring frame as a whole, the inner edge of the bass diaphragm assembly being connected to the extended edge, the outer edge of the bass diaphragm assembly being connected to the basin frame, and the bass voice coil being arranged corresponding to the bass magnetic gap; The U irons of the two structural units in the sound-generating unit are connected to each other, and the treble magnetic gaps of the two structural units are connected through the through hole.

2. The sound unit according to claim 1, characterized in that: The U iron in one structural unit and the U iron in another structural unit are an integral structure formed by integral processing.

3. The sound unit according to claim 1, wherein: There are multiple through holes on the U iron, and the multiple through holes are evenly distributed along the tweeter magnetic gap.

4. The sound unit according to claim 1, wherein: The two structural units are symmetrically arranged.

5. The sound unit according to claim 1, characterized in that: In the structural unit, the tweeter diaphragm assembly includes a tweeter diaphragm, and the tweeter diaphragm includes a tweeter inner fixed part, a tweeter folding ring part and a tweeter outer fixed part connected in sequence from the inside to the outside, the tweeter outer fixed part is connected to the annular magnetic structure, and at least a portion of the extended edge is located directly above the tweeter folding ring part.

6. The sound unit according to claim 5, characterized in that: The tweeter diaphragm assembly further includes a tweeter dome, which is arranged on the tweeter inner fixing portion.

7. The sound unit according to claim 5, characterized in that: Part of the extension edge extends to right above the tweeter inner fixing portion.

8. The sound unit according to claim 1, characterized in that: In the structural unit, the support frame includes a vertical wall, the top end of the vertical wall is bent and extended inward to form the extended edge, the bass diaphragm assembly includes a bass diaphragm, and the bass diaphragm includes a bass inner fixed part, an inner folding ring part, a connecting part, an outer folding ring part and a bass outer fixed part connected in sequence from the inside to the outside, the bass outer fixed part is connected to the basin frame, the bass inner fixed part is connected to the extended edge, and the connection between the bass inner fixed part and the extended edge is arranged away from the vertical wall.

9. The sound unit according to claim 8, characterized in that: The extended edge has a bending portion, which divides the extended edge into an inner edge and an outer edge. The outer edge is connected to the vertical wall. The top surface of the inner edge is higher than the top surface of the outer edge. The bass inner fixing portion is connected to the top surface of the inner edge.

10. The sound unit according to claim 8, characterized in that: The bass diaphragm assembly further comprises a bass dome, which is in the shape of a ring frame as a whole and is connected to the connecting portion.

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