Sound production unit

Abstract

The utility model discloses a sounding unit, which comprises a metal basin stand, a vibration assembly and a magnetic circuit assembly, the metal basin stand comprises an annular frame part and a magnetic conduction part which are integrally processed and formed, and the magnetic conduction part is located at the inner side of the bottom of the annular frame part; the vibration assembly comprises a vibrating diaphragm assembly, and the outer edge of the vibrating diaphragm assembly is connected with the top of the annular frame part. The magnetic circuit assembly comprises a yoke and edge magnetic steel arranged on the yoke, the periphery of the yoke is provided with a flange, the flange is located on the outer side of the annular frame part, the top of the flange is welded to the annular frame part, and the top face of the edge magnetic steel is connected with the bottom face of the magnetic conduction part. The sounding unit is simple in structure, stable in structure, and low in assembly cost and raw material cost.

Description

Technical Field

[0001] The utility model relates to the technical field of electroacoustic transducers, and particularly to a sounding unit. Background Art

[0002] As a common electroacoustic transducer for converting electrical energy into sound energy, the sounding unit plays an indispensable role in the sound reproduction system.

[0003] With the thinning of consumer electronic products such as mobile phones and tablet computers, the sounding unit is also forced to develop in the direction of thinning. However, the thin and light sounding unit is prone to the situation of weak overall strength, resulting in easy damage to the sounding unit when the electronic product drops during normal use, leading to poor sound production.

[0004] In addition, there are many components in the existing sounding unit, and the assembly process is cumbersome, resulting in a relatively high manufacturing cost. Summary of the Utility Model

[0005] The technical problem solved by the utility model is to provide a low-cost sounding unit with a stable structure.

[0006] To solve the above technical problem, the technical solution adopted by the utility model is: a sounding unit, comprising:

[0007] A metal basin frame, the metal basin frame includes a ring frame part and a magnetic conductive part integrally formed, and the magnetic conductive part is located inside the bottom of the ring frame part;

[0008] A vibration assembly, the vibration assembly includes a diaphragm assembly, and the outer edge of the diaphragm assembly is connected to the top of the ring frame part;

[0009] A magnetic circuit assembly, the magnetic circuit assembly includes a yoke and an edge magnet steel arranged on the yoke, the yoke has flanges around it, the flanges are located outside the ring frame part, the top of the flanges is welded to the ring frame part, and the top surface of the edge magnet steel is connected to the bottom surface of the magnetic conductive part.

[0010] In one embodiment, the bottom surface of the magnetic conductive part is perpendicular to the outer wall surface of the ring frame.

[0011] In one embodiment, the flange is formed by bending a partial area of the yoke.

[0012] In one embodiment, the magnetic circuit assembly further includes a central magnetic structure, the central magnetic structure is arranged on the yoke, the central magnetic structure includes a central magnet steel and a central washer, the bottom surface of the central magnet steel is connected to the yoke, the top surface of the central magnet steel is connected to the central washer, the vibration assembly further includes a voice coil connected to the diaphragm assembly, and a magnetic gap for the voice coil to move is formed between the central magnet steel and the edge magnet steel.

[0013] In one embodiment, side magnets are respectively arranged on four sides of the central magnet, and each side magnet is provided with a corresponding magnetic conduction part.

[0014] In one embodiment, it further includes a centering support piece, the centering support piece is fixedly connected to the bottom end of the ring frame part and the voice coil respectively, a conduction line and an exposed external connection pad are arranged on the centering support piece, and the conduction line is electrically connected to the external connection pad and the voice coil.

[0015] In one embodiment, the external connection pad is arranged corresponding to the ring frame part, and a notch structure for the external connection pad to be exposed is arranged at the corner of the yoke.

[0016] In one embodiment, the notch structures are arranged at all corners of the yoke.

[0017] In one embodiment, the flanging is a continuous ring frame structure, a through hole for a partial area of the centering support piece to pass through is arranged on the flanging, and the external connection pad is arranged on the area where the centering support piece passes through the through hole.

[0018] The beneficial effects of the present utility model are as follows: The present sounding unit adopts a metal basin frame, which is beneficial to improving the structural strength of the sounding unit. The arrangement of the flanging on the yoke can improve the structural strength of the yoke. Moreover, after the yoke is welded to the metal basin frame, it can improve the anti-lateral impact ability of the sounding unit, so that the structural stability of the sounding unit is improved to a greater extent. In addition, the design of the side washer is cancelled in the present sounding unit, and instead, a partial area of the metal basin frame is bent inward to form a magnetic conduction structure, reducing the components of the sounding unit, which is beneficial to simplifying the assembly steps of the sounding unit, thereby reducing the assembly cost and raw material cost of the sounding unit. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0020] Figure 1 It is a cross-sectional view of the sounding unit of the present utility model;

[0021] Figure 2 It is a structural schematic diagram of the metal basin frame in the sounding unit of the present utility model;

[0022] Figure 3 It is a structural schematic diagram of the sounding unit in the first embodiment of the present utility model Figure 1 ;

[0023] Figure 4 Structural schematic of the sound - generating unit according to the first embodiment of the present utility model Figure 2 ;

[0024] Figure 5 Structural schematic of the sound - generating unit according to the second embodiment of the present utility model Figure 1 ;

[0025] Figure 6 Structural schematic of the sound - generating unit according to the second embodiment of the present utility model Figure 2 。

[0026] Explanation of the reference numerals in the drawings:

[0027] 1. Metal basin frame; 11. Ring frame part; 12. Magnetic conduction part;

[0028] 2. Diaphragm assembly;

[0029] 3. Voice coil;

[0030] 4. Yoke; 41. Flange; 42. Notch structure; 43. Through - hole;

[0031] 5. Edge magnet;

[0032] 6. Central magnetic structure;

[0033] 7. Centering support piece; 71. External welding pad. Detailed implementation manners

[0034] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings.

[0035] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0036] It should be noted that if there are directional indications such as up, down, left, right, front, back... in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the drawings. If the specific posture changes, the directional indications will also change accordingly.

[0037] In addition, if the descriptions such as "first" and "second" are involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature.

[0038] In addition, the meaning of "and / or" that appears throughout the text is that it includes three parallel solutions. Taking "and / or" as an example, it includes the solution, or the solution, or the solution that satisfies both simultaneously. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0039] In this application, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected", "fixed", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0040] Embodiment 1

[0041] Please refer to Figures 1 to 4 , Embodiment 1 of the present utility model is: a sounding unit, including a metal basin frame 1, a vibration assembly, and a magnetic circuit assembly. The metal basin frame 1 includes a ring frame portion 11 and a magnetic conduction portion 12 integrally formed. The magnetic conduction portion 12 is located inside the bottom of the ring frame portion 11. To improve the consistency of the production of the metal basin frame 1, it is preferred that the bottom surface of the magnetic conduction portion 12 is perpendicular to the outer wall surface of the ring frame.

[0042] The vibration assembly includes a diaphragm assembly 2 and a voice coil 3 connecting the diaphragm assembly 2. The outer edge of the diaphragm assembly 2 is connected to the top of the ring frame portion 11. Specifically, the diaphragm assembly 2 includes a sound film and a middle sticker. The sound film includes an inner fixing portion, a folding ring portion, and an outer fixing portion connected in sequence from the inside out. A window is provided in the central area of the inner fixing portion. The middle sticker is bonded to the inner fixing portion and closes the window. In other embodiments, it is also possible that the diaphragm assembly 2 does not have the middle sticker. At this time, the window is not provided on the inner fixing portion.

[0043] The magnetic circuit assembly includes a yoke 4, a side magnet 5 and a central magnetic structure 6 respectively arranged on the yoke 4. The central magnetic structure 6 includes a central magnet and a central washer. The bottom surface of the central magnet is connected to the yoke 4, and the top surface of the central magnet is connected to the central washer. A magnetic gap for the voice coil 3 to move is formed between the central magnet and the side magnet 5. The periphery of the yoke 4 has a flanging 41, and the flanging 41 is located outside the ring frame portion 11. The top of the flanging 41 is welded to the ring frame portion 11. The top surface of the side magnet 5 is connected to the bottom surface of the magnetic conduction portion 12. For the convenience of processing and manufacturing the yoke 4, in this embodiment, the flanging 41 is formed by bending a partial area of the yoke 4.

[0044] It should be noted that in order to make the magnetic induction lines of the magnetic circuit assembly more concentrated, the magnetic conduction portion 12 is flush or substantially flush with the central washer.

[0045] In this embodiment, the side magnets 5 are respectively arranged on four sides of the central magnet, and each side magnet 5 has a corresponding magnetic conduction portion 12.

[0046] Optionally, the sounding unit further includes a centering washer 7. The centering washer 7 is fixedly connected to the bottom end of the ring frame portion 11 and the voice coil 3 respectively. The centering washer 7 is provided with a conduction line and an exposed external connection pad 71. The conduction line is electrically connected to the external connection pad 71 and the voice coil 3, and an external power supply supplies power to the sounding unit through the external connection pad 71.

[0047] In this embodiment, the external connection pad 71 is arranged corresponding to the ring frame portion 11. A notch structure 42 for the external connection pad 71 to be exposed is provided at the corner of the yoke 4. The notch structure 42 can also reduce the production consumables of the yoke 4 and reduce the manufacturing cost of the sounding unit.

[0048] In order to improve the structural symmetry of the sounding unit, in this embodiment, the notch structure 42 is provided at each corner of the yoke 4.

[0049] Embodiment 2

[0050] Please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6 , the second embodiment of the present utility model is: a sounding unit, including a metal basin frame 1, a vibration assembly and a magnetic circuit assembly. The metal basin frame 1 includes a ring frame portion 11 and a magnetic conduction portion 12 integrally formed. The magnetic conduction portion 12 is located inside the bottom of the ring frame portion 11. To improve the production consistency of the metal basin frame 1, preferably, the bottom surface of the magnetic conduction portion 12 is perpendicular to the outer wall surface of the ring.

[0051] The vibration assembly includes a diaphragm assembly 2 and a voice coil 3 connected to the diaphragm assembly 2. The outer edge of the diaphragm assembly 2 is connected to the top of the ring frame portion 11. Specifically, the diaphragm assembly 2 includes a sounding film and a middle sticker. The sounding film includes an inner fixing portion, a folding ring portion, and an outer fixing portion that are connected in sequence from the inside to the outside. A window is provided in the central region of the inner fixing portion. The middle sticker is bonded to the inner fixing portion to close the window. In other embodiments, it is also possible that the diaphragm assembly 2 does not have the middle sticker. In this case, the window is not provided on the inner fixing portion.

[0052] The magnetic circuit assembly includes a yoke 4, a side magnet 5, and a central magnetic structure 6 respectively provided on the yoke 4. The central magnetic structure 6 includes a central magnet and a central washer. The bottom surface of the central magnet is connected to the yoke 4, and the top surface of the central magnet is connected to the central washer. A magnetic gap for the voice coil 3 to move is formed between the central magnet and the side magnet 5. The yoke 4 has flanges 41 around its perimeter. The flanges 41 are located outside the ring frame portion 11, and the top of the flanges 41 is welded to the ring frame portion 11. The top surface of the side magnet 5 is connected to the bottom surface of the magnetic conductive portion 12. For the convenience of processing and manufacturing the yoke 4, in this embodiment, the flanges 41 are formed by bending a partial area of the yoke 4.

[0053] It should be noted that, in order to make the magnetic induction lines of the magnetic circuit assembly more concentrated, the magnetic conductive portion 12 is flush or approximately flush with the central washer.

[0054] In this embodiment, the side magnets 5 are respectively provided on four sides of the central magnet, and each side magnet 5 has a corresponding magnetic conductive portion 12.

[0055] Optionally, the sound generating unit further includes a centering washer 7. The centering washer 7 is fixedly connected to the bottom end of the ring frame portion 11 and the voice coil 3 respectively. The centering washer 7 is provided with a conduction line and an exposed external connection pad 71. The conduction line electrically connects the external connection pad 71 and the voice coil 3, and an external power supply supplies power to the sound generating unit through the external connection pad 71.

[0056] In this embodiment, the flanges 41 are of a continuous ring frame structure, which can greatly improve the structural strength of the yoke 4 and enable the corner of the sound generating unit to have stronger impact resistance. At this time, the flanges 41 are provided with through holes 43 for a partial area of the centering washer 7 to pass through, and the external connection pad 71 is provided on the area where the centering washer 7 passes through the through holes 43.

[0057] The above are only alternative embodiments of the present utility model, and do not thus limit the patent scope of the present utility model. Any equivalent structural transformation made under the inventive concept of the present utility model by using the content of the specification and drawings of the present utility model, or any direct / indirect application in other related technical fields is included within the scope of patent protection of the present utility model.

Claims

1. Sound generating unit, characterized in that: including a metal basin frame, the metal basin frame includes a ring frame part and a magnetic conductive part which are integrally formed, and the magnetic conductive part is located inside the bottom of the ring frame part; a vibration assembly, the vibration assembly includes a diaphragm assembly, and the outer edge of the diaphragm assembly is connected to the top of the ring frame part; a magnetic circuit assembly, the magnetic circuit assembly includes a yoke and side magnets arranged on the yoke, the yoke has flanges around its periphery, the flanges are located outside the ring frame part, the top of the flanges is welded to the ring frame part, and the top surface of the side magnets is connected to the bottom surface of the magnetic conductive part.

2. The sound generating unit according to claim 1, wherein: The bottom surface of the magnetic conductive part is perpendicular to the outer wall surface of the ring frame.

3. The sound generating unit according to claim 1, characterized in that: The flanges are formed by bending a partial area of the yoke.

4. The sound generating unit according to claim 1, wherein: The magnetic circuit assembly further includes a central magnetic structure, the central magnetic structure is arranged on the yoke, the central magnetic structure includes a central magnet and a central washer, the bottom surface of the central magnet is connected to the yoke, the top surface of the central magnet is connected to the central washer, the vibration assembly further includes a voice coil connected to the diaphragm assembly, and a magnetic gap for the voice coil to move is formed between the central magnet and the side magnets.

5. The sound generating unit according to claim 4, characterized in that: The side magnets are respectively arranged on four sides of the central magnet, and each side magnet has a corresponding magnetic conductive part.

6. The sound generating unit according to claim 4, characterized in that: It further includes a centering support piece, the centering support piece is fixedly connected to the bottom end of the ring frame part and the voice coil respectively, a conduction line and an exposed external connection pad are arranged on the centering support piece, and the conduction line is electrically connected to the external connection pad and the voice coil.

7. The sound generating unit according to claim 6, wherein: The external connection pad is arranged corresponding to the ring frame part, and a notch structure for the external connection pad to be exposed is arranged at the corner of the yoke.

8. The sound generating unit according to claim 7, wherein: The notch structures are arranged at each corner of the yoke.

9. The sound generating unit according to claim 6, wherein: The flanges are a continuous ring frame structure, a through hole for a partial area of the centering support piece to pass through is arranged on the flanges, and the external connection pad is arranged on the area where the centering support piece passes through the through hole.

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