Sound production unit

Abstract

The utility model discloses a sounding unit comprising a basin stand and a magnetic circuit assembly, the magnetic circuit assembly comprises a yoke, a side magnetic steel and an annular washer, the side magnetic steel is in an annular frame shape, the side magnetic steel is connected with the yoke and the annular washer, the annular washer is connected with the basin stand, the magnetic circuit assembly is provided with a ventilation channel, and the ventilation channel is communicated with the side magnetic steel. And the ventilation channel is communicated with the top surface of the annular washer and the outer wall surface of the edge magnetic steel. Compared with a traditional sound production unit, the sound production unit is novel in structure, the continuous annular frame-shaped edge 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 channels in the magnetic circuit assembly can enable air to smoothly circulate between the inner cavity of the sound production unit and the outside, 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 exchange 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] basin rack;

[0007] A magnetic circuit assembly includes a yoke, an edge magnet and an annular washer. The edge magnet is in the shape of a ring frame. The edge magnet connects the yoke and the annular washer. The annular washer is connected to the basin frame. An air permeable channel is provided on the magnetic circuit assembly. The air permeable channel connects the top surface of the annular washer and the outer wall surface of the edge magnet.

[0008] In one embodiment, the air permeable channel includes a first air vent structure provided on the annular washer and a second air vent structure provided on the edge magnetic steel. The first air vent structure is connected to the second air vent structure, and the second air vent structure is not connected to the inner wall surface of the edge magnetic steel.

[0009] In one embodiment, the first ventilation structure is a through hole.

[0010] In one embodiment, the first ventilation structure is a notch, and the annular washer and the basin frame are surrounded by the first ventilation structure to form a through hole.

[0011] In one embodiment, the second ventilation structure is a groove, and the groove connects the top surface and the outer wall surface of the edge magnetic steel.

[0012] In one embodiment, the second ventilation structure is a notch, and the second ventilation structure is connected to the top surface, the bottom surface and the outer wall surface of the edge magnetic steel.

[0013] In one embodiment, the first ventilation structure is not in communication with the inner wall surface of the annular washer.

[0014] In one embodiment, a third ventilation structure communicating with the ventilation channel is provided on the yoke.

[0015] In one embodiment, the third ventilation structure is a pressed groove, a through hole or a notch.

[0016] In one embodiment, the magnetic circuit assembly further includes a central magnetic structure in the shape of a ring frame, wherein the central magnetic structure is provided on the yoke and is located in the hollow area of ​​the side magnetic steel.

[0017] The beneficial effects of the present invention are: compared with the traditional sound unit, the present sound unit has a novel structure, and the continuous ring frame-shaped side magnetic steel has a large volume, which can make the sound unit have a greater magnetic field strength, so that the performance of the sound unit is improved. At the same time, the air permeable channel on the magnetic circuit assembly can allow the air to circulate smoothly between the inner cavity of the sound unit and the outside world, thereby meeting the sound requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 This is an exploded view of the sound unit of the first embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the sound unit of the first embodiment of the present invention;

[0021] Figure 3 This is a structural diagram of a portion of the sound-emitting unit according to the first embodiment of the present invention;

[0022] 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;

[0023] Figure 5 This is a cross-sectional view of the sound unit of the second embodiment of the present invention;

[0024] Figure 6 This is a schematic structural diagram of the overall structure of the sound-emitting unit of the second embodiment of the present utility model;

[0025] Figure 7 This is a cross-sectional view of the sound unit of the third embodiment of the present invention;

[0026] Figure 8 This is a schematic structural diagram of a portion of the sound-emitting unit according to the third embodiment of the present invention;

[0027] Figure 9 This is a cross-sectional view of the sound unit of the fourth embodiment of the present utility model;

[0028] Figure 10 This is a structural diagram of the overall structure of the sound-emitting unit of the fourth embodiment of the present invention.

[0029] Description of Figure Numbers:

[0030] 1. Basin rack;

[0031] 2. Magnetic circuit assembly; 21. Yoke; 211. Third ventilation structure; 22. Side magnetic steel; 23. Ring washer; 24. Center magnetic structure; 25. Ventilation channel; 251. First ventilation structure; 252. Second ventilation structure;

[0032] 3. Diaphragm assembly;

[0033] 4. Voice coil;

[0034] 5. Conducting structure; 51. Centering support; 52. Conducting part. DETAILED DESCRIPTION

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Example 1

[0042] Please refer to Figures 1 to 4 , Embodiment 1 of the present invention is: a sound unit, including a basin 1, a magnetic circuit component 2, a diaphragm component 3, a voice coil 4 and a conductive structure 5, the magnetic circuit component 2 and the diaphragm component 3 are respectively connected to the basin 1, the voice coil 4 is connected to the diaphragm component 3, the magnetic circuit component 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 in the shape of a ring frame, the side magnetic steel 22 connects the yoke 21 and the annular washer 23, the annular washer 23 is connected to the basin 1, and an air permeable channel 25 is provided on the magnetic circuit component 2, the air permeable channel 25 connects the top surface of the annular washer 23 and the outer wall surface of the side magnetic steel 22, and preferably the side magnetic steel 22 is a continuous and complete annular frame structure.

[0043] The central magnetic structure 24 is arranged on the yoke 21, and a magnetic gap is formed between the central magnetic structure 24 and the side magnetic steel 22 for the voice coil 4 to move. The central magnetic structure 24 includes a central magnetic steel and a central washer. The central magnetic steel and the central washer are respectively in the shape of a ring frame. The central magnetic steel connects the central washer and the yoke 21. The central magnetic structure 24 is located in the hollow area of ​​the side magnetic steel 22. The conductive structure 5 is provided 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. 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.

[0044] The air-permeable channel 25 includes a first air-vent structure 251 provided on the annular washer 23 and a second air-vent structure 252 provided on the edge magnetic steel 22. The first air-vent structure 251 is connected to the second air-vent structure 252, and the second air-vent structure 252 is not connected to the inner wall surface of the edge magnetic steel 22. Preferably, the first air-vent structure 251 is not connected to the inner wall surface of the annular washer 23.

[0045] In this embodiment, the first ventilation structure 251 is a through hole, which connects the top surface and the bottom surface of the annular washer 23; the second ventilation structure 252 is a groove, which connects the top surface and the outer wall surface of the edge magnetic steel 22, but not the bottom surface of the edge magnetic steel 22.

[0046] Example 2

[0047] Please refer to Figure 5 and Figure 6 The second embodiment of the present invention is a parallel technical solution of the first embodiment, and the difference from the first embodiment is that the second ventilation structure 252 is a notch, and the second ventilation structure 252 connects the top surface, bottom surface and outer wall surface of the edge magnetic steel 22, which can facilitate the processing and manufacturing of the edge magnetic steel 22.

[0048] Example 3

[0049] Please refer to Figure 7 and Figure 8Embodiment 3 of the present invention is a parallel technical solution of embodiment 1, and differs from embodiment 1 in that: the first ventilation structure 251 is a notch, and the annular washer 23 and the basin frame 1 are enclosed at the first ventilation structure 251 to form a through hole. In this embodiment, the annular washer 23 and the basin frame 1 are an integral structure formed by integral injection molding, and the through hole located at the first ventilation structure 251 is formed during the injection molding process of the annular washer 23 and the basin frame 1.

[0050] Example 4

[0051] Please refer to Figure 9 and Figure 10 The fourth embodiment of the present invention is a parallel technical solution to the first embodiment. It differs from the first embodiment in that a third ventilation structure 211 is provided on the yoke 21, communicating with the air passage 25. The third ventilation structure 211 can be a pressed groove, a through hole, or the like. In this embodiment, the third ventilation structure 211 is a notch. The third ventilation structure 211 allows for smoother air circulation inside and outside the sound unit.

[0052] 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 basin rack; A magnetic circuit assembly includes a yoke, an edge magnet and an annular washer. The edge magnet is in the shape of a ring frame. The edge magnet connects the yoke and the annular washer. The annular washer is connected to the basin frame. An air permeable channel is provided on the magnetic circuit assembly. The air permeable channel connects the top surface of the annular washer and the outer wall surface of the edge magnet.

2. The sound unit according to claim 1, characterized in that: The air-permeable channel includes a first air-vent structure provided on the annular washer and a second air-vent structure provided on the edge magnetic steel. The first air-vent structure is connected to the second air-vent structure, and the second air-vent structure is not connected to the inner wall surface of the edge magnetic steel.

3. The sound unit according to claim 2, characterized in that: The first ventilation structure is a through hole.

4. The sound unit according to claim 2, characterized in that: The first ventilation structure is a notch, and the annular washer and the basin frame are surrounded by the first ventilation structure to form a through hole.

5. The sound unit according to claim 2, characterized in that: The second ventilation structure is a groove, and the groove connects the top surface and the outer wall surface of the edge magnetic steel.

6. The sound unit according to claim 2, characterized in that: The second ventilation structure is a notch, and the second ventilation structure is connected to the top surface, bottom surface and outer wall surface of the edge magnetic steel.

7. The sound unit according to claim 2, characterized in that: The first ventilation structure is not in communication with the inner wall surface of the annular washer.

8. The sound unit according to claim 1, characterized in that: The yoke is provided with a third ventilation structure connected to the ventilation channel.

9. The sound unit according to claim 8, characterized in that: The third ventilation structure is a pressed groove, a through hole or a notch.

10. The sound unit according to claim 1, characterized in that: The magnetic circuit assembly further includes a central magnetic structure in the shape of a ring frame, the central magnetic structure is arranged on the yoke, and the central magnetic structure is located in the hollow area of ​​the side magnetic steel.

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