A loudspeaker

Abstract

The application provides a loudspeaker, which comprises a frame, a vibration system fixed to the frame and a magnetic circuit system fixed to the frame, the magnetic circuit system comprises a magnetic yoke, the vibration system comprises a diaphragm and an elastic conductive part connected between the magnetic yoke and the diaphragm; the elastic conductive part comprises a first connecting part connected to the magnetic yoke, a second connecting part connected to the diaphragm and an elastic connecting part arranged between the first connecting part and the second connecting part; two mounting holes are arranged at intervals on the magnetic yoke, a bridge plate is formed in the region between the two mounting holes, and the first connecting part is arranged around the bridge plate. The loudspeaker has high production yield, stable sound quality and long service life.

Description

Technical Field

[0001] This invention relates to the field of acoustic and electronic technology, and specifically to a loudspeaker. Background Technology

[0002] As consumer electronics products trend towards miniaturization and high integration, speaker miniaturization plays a positive role in improving the utilization of internal installation space. Among these advancements, 3D FPC (flexible printed circuit) is widely used in speaker structures due to its advantages such as three-dimensional wiring capabilities, flexible adaptation to vibration scenarios, and high integration. It can be folded and bent to fit the compact internal layout of the speaker, effectively saving installation space and ensuring the normal vibration stroke of the diaphragm and voice coil. However, in the current speaker manufacturing process, the elastic conductive components suffer from insufficient welding reliability and are prone to deformation or structural damage during high-temperature welding, leading to low product yield, unstable sound quality, and short lifespan.

[0003] Therefore, it is necessary to provide a speaker with high yield, stable sound quality, and long service life. Summary of the Invention

[0004] The purpose of this invention is to provide a loudspeaker that has a high manufacturing yield, stable sound quality, and long service life.

[0005] The technical solution of the present invention is as follows:

[0006] A loudspeaker includes a frame and a vibration system and a magnetic circuit system fixed to the frame. The magnetic circuit system includes a yoke. The vibration system includes a diaphragm and an elastic conductive element connecting the yoke and the diaphragm. The elastic conductive element includes a first connecting portion connected to the yoke, a second connecting portion connected to the diaphragm, and an elastic connecting portion disposed between the first connecting portion and the second connecting portion. The yoke has two spaced-apart mounting holes, and the area between the two mounting holes forms a bridge plate. The first connecting portion includes a first horizontal section, two bent sections disposed opposite to both sides of the main body, and two second horizontal sections respectively connected to the ends of the two bent sections away from the first horizontal section and disposed parallel to the first horizontal section. A gap is provided between the two second horizontal sections.

[0007] Optionally, the bridge plate is arched towards the front of the magnetic yoke to protrude from the surface of the magnetic yoke, and the back of the bridge plate and the two mounting holes together form a receiving groove, and the section of the first connecting part located on the back of the magnetic yoke is received in the receiving groove.

[0008] Optionally, the back side of the section of the first connecting portion located on the back side of the magnetic yoke does not extend beyond the back side of the magnetic yoke.

[0009] Optionally, the first connecting part and the elastic connecting part are separate connecting structures; the first horizontal segment is disposed in the receiving groove, the two bent segments pass through the two mounting holes respectively, and the two second horizontal segments are disposed on the front side of the bridge plate; the bottom end of the elastic connecting part is provided with a transition part, and the transition part is fixedly connected to the two second horizontal segments.

[0010] Optionally, the elastic connecting part and the first connecting part are integral structures; the first horizontal segment is disposed on the front side of the bridge plate and connected to the elastic connecting part, the two bending segments pass through the two mounting holes respectively, and the two second horizontal segments are disposed in the receiving groove.

[0011] Optionally, the elastic connecting part has a U-shaped structure, and there are two elastic connecting parts. The two elastic connecting parts are distributed on both sides of the first connecting part, and the bottom ends of the two elastic connecting parts are respectively connected to the first connecting part. The second connecting part is located at the top of the two elastic connecting parts. The two elastic connecting parts are arranged symmetrically about the first connecting part.

[0012] Optionally, the two elastic connecting portions are disposed opposite each other on both sides of the first connecting portion; or, the two elastic connecting portions are disposed parallel to each other on both sides of the first connecting portion and the openings face opposite directions.

[0013] Optionally, the diaphragm includes a first dome, a first clearance hole is provided in the area of ​​the first dome corresponding to the first connecting portion, a second dome is provided on the first clearance hole, and the second connecting portion is connected to the first dome.

[0014] Optionally, the diaphragm includes a skeleton, the skeleton includes a skeleton body and a connecting protrusion formed by the skeleton body extending toward the magnetic yoke, the vibration system also includes a voice coil that drives the diaphragm to vibrate, the voice coil is fixed on the connecting protrusion, a second clearance hole is provided in the area of ​​the skeleton body corresponding to the first connecting part; the second connecting part is connected to the back of the skeleton body, and a third dome is provided on the top surface of the skeleton body.

[0015] Optionally, the magnetic circuit system further includes a central magnet located in the central region of the yoke and a first pole core located on the front side of the central magnet. The central magnet and the first pole core are respectively provided with through-hole structures for the elastic conductive element to pass through.

[0016] The beneficial effects of the present invention are as follows: The loudspeaker of the present invention includes an elastic conductive element. In use, the elastic conductive element is connected to an external solder pad through a first connecting part connected to the magnetic yoke. The first connecting part is mounted on the bridge plate of the magnetic yoke. The bridge plate can support the first connecting part, thereby supporting the entire elastic conductive element and preventing deformation of the elastic conductive element from causing welding misalignment. At the same time, it avoids deformation of the bridge plate due to heat during the welding of the elastic conductive element, thereby improving the product yield, the stability of the loudspeaker's sound quality, and its service life. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the first angle of the first structure of the loudspeaker of the present invention.

[0018] Figure 2 This is an exploded view of the first structural schematic diagram of the loudspeaker of the present invention.

[0019] Figure 3 This is a schematic diagram of the second angle of the first structure of the loudspeaker of the present invention.

[0020] Figure 4 for Figure 3 View of a cross-section along AA.

[0021] Figure 5 This is a schematic diagram of the first angle of the magnetic yoke of the present invention.

[0022] Figure 6 This is a schematic diagram of the second angle of the magnetic yoke of the present invention.

[0023] Figure 7 This is a schematic diagram of the first structure of the elastic conductive element of the present invention.

[0024] Figure 8 This is a schematic diagram of a second structure of the elastic conductive element of the present invention.

[0025] Figure 9 This is a schematic diagram of the third structure of the elastic conductive element of the present invention.

[0026] Figure 10 This is an assembly diagram of the first structure of the elastic conductive element of the present invention.

[0027] Figure 11 This is an assembly diagram of the third structure of the elastic conductive element of the present invention.

[0028] Figure 12 This is a schematic diagram of the first angle of the second structure of the loudspeaker of the present invention.

[0029] Figure 13This is an exploded view of a second structure of the loudspeaker of the present invention.

[0030] Figure 14 This is a schematic diagram of the second angle of the second structure of the loudspeaker of the present invention.

[0031] Figure 15 for Figure 14 View of a cross-section along BB.

[0032] Among them, 1-frame, 2-vibration system, 21-diaphragm, 211-first dome, 212-first clearance hole, 213-second dome, 214-ring frame, 215-voice coil, 216-frame, 2161-frame body, 2162-connecting protrusion, 2163-second clearance hole, 217-third dome, 218-outer diaphragm, 22-elastic conductive element, 221-first connecting part, 2 211-First horizontal section, 2212-Bent section, 2213-Second horizontal section, 222-Second connecting part, 223-Elastic connecting part, 224-Transfer part, 3-Magnetic circuit system, 31-Magnetic yoke, 311-Mounting hole, 312-Bridge plate, 313-Accommodation groove, 32-Center magnet, 33-First pole core, 34-Through hole structure, 35-Side magnet, 36-Second pole core, 37-Magnetic gap. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0034] A loudspeaker, see Figures 1 to 4 as well as Figures 12 to 15 As shown, it includes a basin frame 1 and a vibration system 2 and a magnetic circuit system 3 fixed to the basin frame 1. The magnetic circuit system 3 includes a magnetic yoke 31, and the vibration system 2 includes a diaphragm 21 and an elastic conductive element 22 connecting the magnetic yoke 31 and the diaphragm 21; see also Figures 7 to 9 As shown, the elastic conductive element 22 includes a first connecting portion 221 connected to the magnetic yoke 31, a second connecting portion 222 connected to the diaphragm 21, and an elastic connecting portion 223 disposed between the first connecting portion 221 and the second connecting portion 222; the magnetic yoke 31 has two spaced mounting holes 311, and the area between the two mounting holes 311 forms a bridge plate 312; in some embodiments, see Figures 7 to 9 As shown, the first connecting portion 221 includes a first horizontal segment 2211, two bent segments 2212 disposed on both sides of the first horizontal segment 2211, and two second horizontal segments 2213 respectively connected to one end of the two bent segments 2212 away from the first horizontal segment 2211 and disposed parallel to the first horizontal segment 2211; a gap is provided between the two second horizontal segments 2213.

[0035] The loudspeaker of this invention includes an elastic conductive element 22. In use, the elastic conductive element 22 communicates with an external solder pad through a first connecting portion 221 connected to the magnetic yoke 31. The first connecting portion 221 forms a bridge plate 312 that hugs the magnetic yoke 31 through a first horizontal section 2211, a bent section 2212, and a second horizontal section 2213. The bridge plate 312 supports the first connecting portion 221, thereby supporting the elastic conductive element 22 as a whole and preventing deformation of the elastic conductive element 22 that could lead to welding misalignment. Simultaneously, it prevents deformation of the bridge plate 312 due to heat during the welding of the elastic conductive element 22, thus improving the product yield, the stability of the loudspeaker's sound quality, and its service life. Furthermore, the gap between the second horizontal sections 2213 facilitates the assembly of the elastic connecting portion 223 and the bridge plate 312.

[0036] In some embodiments, see Figure 5 and Figure 6 As shown, the bridge plate 312 is arched towards the front of the magnetic yoke 31 and protrudes from the surface of the magnetic yoke 31. The back of the bridge plate 312 and the two mounting holes 311 together form a receiving groove 313. The first connecting part 221 is located in the section on the back of the magnetic yoke 31 and is received in the receiving groove 313.

[0037] Furthermore, in some embodiments, the back side of the section of the first connecting portion 221 located on the back side of the magnetic yoke 31 does not extend beyond the back side of the magnetic yoke. The receiving groove 313 accommodates the structure of the first connecting portion 221, keeping the back side structure of the magnetic yoke 31 flush, reducing the occupation of installation space and avoiding mutual interference between components. "Does not extend beyond the back side of the magnetic yoke 31" means that the plane of the first connecting portion 221 is flush with the back side of the magnetic yoke, or that the section of the first connecting portion 221 located within the receiving groove 313 is placed inside the receiving groove 313.

[0038] In some embodiments, see Figure 7 As shown, the first connecting part 221 and the elastic connecting part 223 are separate connecting structures, which facilitates installation and manufacturing. The first horizontal segment 2211 is disposed in the receiving groove 313, the two bent segments 2212 pass through the two mounting holes 311 respectively, and the two second horizontal segments 2213 are disposed on the front side of the bridge plate 312. The bottom end of the elastic connecting part 223 is provided with a transition part 224, which is fixedly connected to the two second horizontal segments 2213. The provision of the transition part 224 increases the connection strength between the first connecting part 221 and the elastic connecting part 223, and further avoids deformation caused by high temperature during welding.

[0039] See Figure 8 and Figure 9 As shown, in some embodiments, the elastic connection portion 223 and the first connection portion 221 are integrally structured; this simplifies the structure of the elastic conductive element 22, reduces the space occupied by the elastic conductive element 22, and the circuit is formed solely by FPC circuitry, reducing the risk of poor soldering and open circuits. The first horizontal segment 2211 is located on the front side of the bridge plate 312 and connected to the elastic connection portion 223. Two bending segments 2212 pass through two mounting holes 311 respectively, and two second horizontal segments 2213 are located within the receiving groove 313. During manufacturing, after the first horizontal segment 2211 is connected to the front side of the bridge plate 312, a bending operation is performed on the back side of the magnetic yoke 31, which facilitates the installation of the elastic conductive element 22, improves the manufacturing efficiency of the speaker, and simplifies the arrangement structure of the elastic connection portion 223, enhancing the applicability of the elastic conductive element 22.

[0040] The elastic connecting part 223 has a U-shaped structure, and there are two elastic connecting parts 223. The two elastic connecting parts 223 are distributed on both sides of the first connecting part 221, and the bottom ends of the two elastic connecting parts 223 are respectively connected to the first connecting part 221. The second connecting part 222 is provided at the top of the two elastic connecting parts 223. The two elastic connecting parts 223 are arranged symmetrically about the first connecting part 221.

[0041] Optional, see Figure 7 and Figure 10 As shown, in some embodiments, when the first connecting portion 221 and the two elastic connecting portions 223 are separate connecting structures, the two elastic connecting portions 223 are connected to the adapter portion 224; when the two elastic connecting portions 223 and the first connecting portion 221 are integral structures, the two elastic connecting portions 223 are connected to the first horizontal segment 2211.

[0042] See Figure 8 As shown, when the two elastic connecting portions 223 and the first connecting portion 221 are integrally formed, the openings of the two elastic connecting portions 223 are disposed opposite each other on both sides of the first connecting portion 221; or, see... Figure 9 and Figure 11 As shown, the two elastic connecting portions 223 are arranged parallel to each other on both sides of the first connecting portion 221 and their openings face opposite directions.

[0043] To facilitate the welding of the elastic conductive part 22 inside the speaker by the welding device, a clearance structure can be provided on the top of the speaker for the welding device to enter.

[0044] For example, see Figures 1 to 4 As shown, in some embodiments, the diaphragm 21 includes a first dome 211, a first clearance hole 212 is provided in the area corresponding to the first connecting portion 221, a second dome 213 is provided on the first clearance hole 212, and the second connecting portion 222 is connected to the first dome 211. The provision of the first clearance hole 212 facilitates the insertion of a welding device into the speaker to process the elastic conductive element 22 during manufacturing. The vibration system 2 also includes an annular frame 214 provided on the back of the first dome 211, and a voice coil 215 is provided on the annular frame 214.

[0045] See Figures 12 to 15 As shown, in some embodiments, the diaphragm 21 includes a skeleton, the skeleton 216 includes a skeleton body 2161 and a connecting protrusion 2162 extending from the skeleton body 2161 toward the yoke 31. The vibration system 2 also includes a voice coil 215 that drives the diaphragm 21 to vibrate. The voice coil 215 is fixed to the connecting protrusion 2162. A second clearance hole 2163 is provided in the area of ​​the skeleton body 2161 corresponding to the first connecting portion 221. The second connecting portion 222 is connected to the back of the skeleton body 2161, and a third dome 217 is provided on the top surface of the skeleton body 2161. The structural configuration of the skeleton 216 allows the skeleton body 2161 to support the third dome 217 while also serving the same function as the diaphragm 21, thus simplifying the structural configuration of the vibration system 2. The voice coil 215 is provided on the connecting protrusion 2162.

[0046] The diaphragm 21 further includes an outer diaphragm 218; the outer diaphragm 218 is disposed along the outer periphery of the first dome 211 or along the outer periphery of the third dome 217.

[0047] The magnetic circuit system 3 further includes a central magnet 32 ​​located in the central region of the magnetic yoke 31 and a first pole core 33 located on the front side of the central magnet 32. The central magnet 32 ​​and the first pole core 33 are respectively provided with through hole structures 34 for the elastic conductive element 22 to pass through.

[0048] The magnetic circuit system 3 also includes a side magnet 35 spaced around the outer periphery of the central magnet 32 ​​and a second pole core 36 disposed on the top surface of the side magnet 35, with a magnetic gap 37 formed between the side magnet 35 and the central magnet 32; the voice coil 215 extends into the magnetic gap 37.

[0049] The above description is merely an embodiment of the present invention. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of the present invention, but these improvements all fall within the protection scope of the present invention.

Claims

1. A loudspeaker, characterized in that, It includes a basin frame and a vibration system and a magnetic circuit system fixed to the basin frame. The magnetic circuit system includes a magnetic yoke. The vibration system includes a diaphragm and an elastic conductive element connecting the magnetic yoke and the diaphragm. The elastic conductive element includes a first connecting portion connected to the magnetic yoke, a second connecting portion connected to the diaphragm, and an elastic connecting portion disposed between the first connecting portion and the second connecting portion. The magnetic yoke has two spaced-apart mounting holes, and the area between the two mounting holes forms a bridge plate. The first connecting portion includes a first horizontal section, two bent sections disposed on opposite sides of the first horizontal section, and two second horizontal sections respectively connected to the ends of the two bent sections away from the first horizontal section and disposed parallel to the first horizontal section. A gap is provided between the two second horizontal sections. The first horizontal section and the second horizontal section are respectively disposed on two opposite planes of the bridge plate.

2. The loudspeaker according to claim 1, characterized in that: The bridge plate arches towards the front of the magnetic yoke to protrude from the surface of the magnetic yoke. The back of the bridge plate and the two mounting holes together form a receiving groove. The section of the first connecting part located on the back of the magnetic yoke is received in the receiving groove.

3. The loudspeaker according to claim 2, characterized in that: The back side of the section of the first connecting part located on the back side of the magnetic yoke does not extend beyond the back side of the magnetic yoke.

4. The loudspeaker according to claim 2, characterized in that: The first connecting part and the elastic connecting part are separate connecting structures; the first horizontal section is disposed in the receiving groove, the two bent sections pass through the two mounting holes respectively, and the two second horizontal sections are disposed on the front side of the bridge plate; the bottom end of the elastic connecting part is provided with a transition part, and the transition part is fixedly connected to the two second horizontal sections.

5. The loudspeaker according to claim 2, characterized in that: The elastic connecting part and the first connecting part are integral structures; the first horizontal section is located on the front of the bridge plate and connected to the elastic connecting part; the two bending sections pass through the two mounting holes respectively; and the two second horizontal sections are located in the receiving groove.

6. The loudspeaker according to claim 1, characterized in that: The elastic connecting part has a U-shaped structure, and there are two elastic connecting parts. The two elastic connecting parts are distributed on both sides of the first connecting part, and the bottom ends of the two elastic connecting parts are respectively connected to the first connecting part. The second connecting part is located at the top of the two elastic connecting parts. The two elastic connecting parts are arranged symmetrically about the first connecting part.

7. The loudspeaker according to claim 6, characterized in that: The two elastic connecting parts are disposed opposite each other on both sides of the first connecting part; or, the two elastic connecting parts are disposed parallel to each other on both sides of the first connecting part and the openings face opposite directions.

8. The loudspeaker according to claim 1, characterized in that: The diaphragm includes a first dome, a first clearance hole is provided in the area of ​​the first dome corresponding to the first connecting part, a second dome is provided on the first clearance hole, and the second connecting part is connected to the first dome.

9. The loudspeaker according to claim 1, characterized in that: The diaphragm includes a skeleton, the skeleton includes a skeleton body and a connecting protrusion extending from the skeleton body toward the magnetic yoke, the vibration system also includes a voice coil that drives the diaphragm to vibrate, the voice coil is fixed on the connecting protrusion, a second clearance hole is provided in the area of ​​the skeleton body corresponding to the first connecting part; the second connecting part is connected to the back of the skeleton body, and a third dome is provided on the top surface of the skeleton body.

10. The loudspeaker according to claim 1, characterized in that: The magnetic circuit system further includes a central magnet located in the central region of the yoke and a first pole core located on the front side of the central magnet. The central magnet and the first pole core are respectively provided with through-hole structures for the elastic conductive element to pass through.

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