Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a yoke, side magnetic steel and central magnetic steel, the yoke is provided with a ventilation channel for communicating the top surface and the outer wall surface of the yoke, and an air port is formed at the communication part of the top surface of the yoke and the ventilation channel; the side magnetic steel is arranged on the yoke, and the side magnetic steel is in a continuous ring frame shape; the central magnetic steel is arranged on the yoke and located in the hollow area of the side magnetic steel, a magnetic gap is formed between the central magnetic steel and the side magnetic steel, and the air port is arranged corresponding to the magnetic gap. Compared with a traditional sound production unit, the sound production unit is novel in structure, the continuous ring-frame-shaped side magnetic steel is large in size, the sound production unit can have higher magnetic field intensity, the performance of the sound production unit is improved, meanwhile, the ventilation channel is formed in the yoke, smooth air circulation between the inner cavity of the sound production unit and the outside can be achieved, and the sound production efficiency is improved. Therefore, the sounding requirement is met.

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] As an important acoustic component, the sound unit is widely used in various portable electronic devices such as mobile phones, tablets, and game consoles.

[0003] In a speaker driver, the voice coil drives the diaphragm assembly to produce sound. During this process, air circulates between the cavity within the speaker driver and the outside world. However, to improve performance, existing speaker drivers require as many magnets as possible on the inside and outside of the voice coil. Some even have designs where the entire voice coil is composed of magnets. This hinders airflow interaction between the inside and outside of the speaker driver, impacting performance. Utility Model Content

[0004] The technical problem solved by the utility model is to provide a high-performance sound-generating unit with smooth air circulation between the interior and the outside.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is: a sound unit comprising:

[0006] A yoke, wherein the yoke is provided with an air-permeable passage connecting the top surface of the yoke and the outer wall surface, and an air port is formed at the connection point between the top surface of the yoke and the air-permeable passage;

[0007] side magnetic steel, the side magnetic steel is provided on the yoke iron, and the side magnetic steel is in a continuous ring frame shape;

[0008] The central magnetic steel is arranged on the yoke and located in the hollow area of ​​the side magnetic steels, a magnetic gap is formed between the central magnetic steel and the side magnetic steels, and the air port is arranged corresponding to the magnetic gap.

[0009] In one embodiment, there are multiple ventilation channels.

[0010] In one embodiment, a plurality of the air-permeable channels are arranged in a circle around the magnetic gap.

[0011] In one embodiment, two adjacent air ports are connected to each other.

[0012] In one embodiment, the yoke includes a first magnetic cover and a second magnetic cover, the second magnetic cover is provided on the first magnetic cover, and the first magnetic cover and the second magnetic cover together form the air permeable channel.

[0013] In one embodiment, the top surface of the first magnetic cover is provided with a groove connected to the outer wall surface of the first magnetic cover, the second magnetic cover covers a partial area of ​​the groove to form the air permeable channel together with the first magnetic cover, and the edge magnetic steel is provided on the second magnetic cover.

[0014] In one embodiment, the second magnetic cover is in a ring frame shape, and the groove area not covered by the second magnetic cover forms the air port.

[0015] In one embodiment, the second magnetic cover is in a flat plate shape, and the air port is provided on the second magnetic cover.

[0016] In one embodiment, the first magnetic cover is in a flat plate shape, and the air permeable channel is provided on the bottom surface of the second magnetic cover.

[0017] In one embodiment, the central magnetic steel is in the shape of a continuous ring frame.

[0018] The beneficial effects of this utility model are as follows: compared to traditional sound units, this sound unit has a novel structure. The continuous ring-shaped side magnets are larger in volume, allowing the sound unit to have a greater magnetic field strength, thereby improving the performance of the sound unit. At the same time, the provision of a ventilation channel on the yoke allows for smooth air circulation between the inner cavity of the sound unit and the outside world, thereby meeting sound production requirements. In addition, the ventilation channel is located inside the yoke, and the bonding area between the side magnets and the yoke is not reduced due to the provision of the ventilation channel, which helps to ensure the stability of the connection between the side magnets and the yoke. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] 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.

[0020] Figure 1 This is an exploded view of the sound unit of the first embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0022] Figure 3 This is a structural diagram of a portion of the sound-emitting unit according to the first embodiment of the present invention;

[0023] Figure 4 This is a schematic structural diagram of the overall structure of the sound-emitting unit according to the first embodiment of the present invention;

[0024] Figure 5This is a schematic structural diagram of a portion of the sound-emitting unit according to the second embodiment of the present invention;

[0025] Figure 6 This is a partial cross-sectional view of the sound unit of the third embodiment of the present invention;

[0026] Figure 7 This is a partial cross-sectional view of the sound unit of the fourth embodiment of the present utility model;

[0027] Figure 8 This is a partial cross-sectional view of the sound unit of the fifth embodiment of the present invention.

[0028] Description of Figure Numbers:

[0029] 1. Basin rack;

[0030] 2. Magnetic circuit assembly; 21. Yoke; 211. First magnetic cover; 212. Second magnetic cover; 22. Side magnets; 23. Annular washer; 24. Center magnetic structure; 241. Center magnet; 242. Center washer; 25. Air passage; 251. Air port; 252. Annular groove; 26. Magnetic gap;

[0031] 3. Diaphragm assembly;

[0032] 4. Voice coil;

[0033] 5. Conducting structure; 51. Centering support; 52. Conducting part. DETAILED DESCRIPTION

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Example 1

[0041] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a sound unit, including a basin frame 1, a magnetic circuit assembly 2, a diaphragm assembly 3, a voice coil 4 and a conductive structure 5, the magnetic circuit assembly 2 and the diaphragm assembly 3 are respectively connected to the basin frame 1, the voice coil 4 is connected to the diaphragm assembly 3, the magnetic circuit assembly 2 includes a yoke 21, a side magnetic steel 22, an annular washer 23 and a central magnetic structure 24 in the shape of a ring frame, the side magnetic steel 22 is provided on the yoke 21, the side magnetic steel 22 is in a continuous ring frame shape, the annular washer 23 connects the basin frame 1 and the side magnetic steel 22, the yoke 21 is provided with an air permeable channel 25 connecting its top surface and outer wall surface, and an air port 251 is formed at the connection between the top surface of the yoke 21 and the air permeable channel 25;

[0042] The central magnetic structure 24 includes a central magnet 241 and a central washer 242. The central magnet 241 is arranged on the yoke 21 and is located in the hollow area of ​​the side magnet 22. A magnetic gap 26 for the movement of the voice coil 4 is formed between the central magnet 241 and the side magnet 22. The air port 251 is arranged corresponding to the magnetic gap 26, that is, the magnetic gap 26 is connected to the air permeable channel 25 through the air port 251.

[0043] Specifically, the central magnetic steel 241 and the central washer 242 are respectively in the shape of continuous ring frames, the central magnetic steel 241 is connected to the central washer 242, the conductive structure 5 is arranged in the hollow area of ​​the central magnetic structure 24, the yoke 21 has a window for exposing a part of the conductive structure 5, the conductive structure 5 is electrically connected to the voice coil 4, and an external power supply supplies power to the voice coil 4 through the conductive structure 5.

[0044] In this embodiment, the conductive structure 5 includes a centering support plate 51 and a conductive member 52. The conductive member 52 is fixedly connected to the centering support plate 51 and is conductive to each other. Part of the conductive member 52 is exposed from the window of the yoke 21. The conductive member 52 is fixed on the yoke 21, and the centering support plate 51 is conductive to the voice coil 4.

[0045] As a preferred embodiment, there are a plurality of the air permeable channels 25. Optionally, the plurality of air permeable channels 25 are arranged in a circle around the magnetic gap 26.

[0046] Example 2

[0047] Please refer to Figure 5 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and is different from the first embodiment in that: in order to facilitate the processing and manufacturing of the yoke 21, the two adjacent air ports 251 are connected to each other.

[0048] In this embodiment, the edges of the plurality of air ports 251 are connected to each other to form an annular groove 252 , and the annular groove 252 is connected to each of the air passages 25 .

[0049] Example 3

[0050] Please refer to Figure 6 Embodiment 3 of the present invention is a parallel technical solution of embodiment 1, and is different from embodiment 1 in that: the yoke 21 includes a first magnetic cover 211 and a second magnetic cover 212, and the second magnetic cover 212 is arranged on the first magnetic cover 211, and the first magnetic cover 211 and the second magnetic cover 212 together form a ventilation channel 25.

[0051] Specifically, the top surface of the first magnetic cover 211 is provided with a groove connected to the outer wall surface of the first magnetic cover 211, and the second magnetic cover 212 covers a part of the area of ​​the groove to form the air permeable channel 25 together with the first magnetic cover 211, and the edge magnetic steel 22 is provided on the second magnetic cover 212.

[0052] In this embodiment, the second magnetic cover 212 is in a ring frame shape, and the groove area not covered by the second magnetic cover 212 forms the air port 251 .

[0053] Example 4

[0054] Please refer to Figure 7 The fourth embodiment of the present invention is a parallel technical solution of the third embodiment, and differs from the third embodiment in that the second magnetic cover 212 is flat and the air port 251 is provided on the second magnetic cover 212 .

[0055] Example 5

[0056] Please refer to Figure 8 Embodiment 5 of the present invention is a parallel technical solution of embodiment 1, and differs from embodiment 3 in that: the yoke 21 includes a first magnetic cover 211 and a second magnetic cover 212, and the second magnetic cover 212 is arranged on the first magnetic cover 211, and the first magnetic cover 211 and the second magnetic cover 212 together form a ventilation channel 25.

[0057] Specifically, the top surface of the first magnetic cover 211 is provided with a groove connected to the outer wall surface of the first magnetic cover 211, the second magnetic cover 212 covers a part of the area of ​​the groove to form the air permeable channel 25 together with the first magnetic cover 211, the edge magnetic steel 22 is provided on the second magnetic cover 212, the first magnetic cover 211 is flat, the air permeable channel 25 is provided on the bottom surface of the second magnetic cover 212, and the air outlet 251 is provided on the top surface of the second magnetic cover 212.

[0058] 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: include A yoke, wherein the yoke is provided with an air-permeable passage connecting the top surface of the yoke and the outer wall surface, and an air port is formed at the connection point between the top surface of the yoke and the air-permeable passage; side magnetic steel, the side magnetic steel is provided on the yoke iron, and the side magnetic steel is in a continuous ring frame shape; The central magnetic steel is arranged on the yoke and located in the hollow area of ​​the side magnetic steels, a magnetic gap is formed between the central magnetic steel and the side magnetic steels, and the air port is arranged corresponding to the magnetic gap.

2. The sound unit according to claim 1, characterized in that: There are multiple ventilation channels.

3. The sound unit according to claim 2, characterized in that: A plurality of the air-permeable channels are arranged in a circle around the magnetic gap.

4. The sound unit according to claim 3, characterized in that: Two adjacent air ports are communicated with each other.

5. The sound unit according to claim 1, characterized in that: The yoke includes a first magnetic cover and a second magnetic cover, the second magnetic cover is arranged on the first magnetic cover, and the first magnetic cover and the second magnetic cover together form the air permeable channel.

6. The sound unit according to claim 5, characterized in that: The top surface of the first magnetic cover is provided with a groove connected to the outer wall surface of the first magnetic cover, the second magnetic cover covers a part of the area of ​​the groove to form the air permeable channel together with the first magnetic cover, and the edge magnetic steel is provided on the second magnetic cover.

7. The sound unit according to claim 6, characterized in that: The second magnetic cover is in a ring frame shape, and the groove area not covered by the second magnetic cover forms the air port.

8. The sound unit according to claim 6, characterized in that: The second magnetic cover is in a flat plate shape, and the air port is arranged on the second magnetic cover.

9. The sound unit according to claim 6, characterized in that: The first magnetic cover is in a flat plate shape, and the air permeable channel is arranged on the bottom surface of the second magnetic cover.

10. The sound unit according to claim 1, characterized in that: The central magnetic steel is in a continuous ring frame shape.

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