A loudspeaker

Abstract

The utility model provides a kind of loudspeaker, it includes basin frame and respectively fixed in the vibration system of the basin frame and the magnetic circuit system of the vibration system sound production driven;The vibration system includes the tweeter unit of being located in the magnetic circuit system side, and the tweeter unit includes high sound diaphragm and the high sound voice coil assembly of being located in the high sound diaphragm side close to the magnetic circuit system;The high sound voice coil assembly includes high sound support and the first high sound voice coil and the second high sound voice coil around being located in the upper portion and lower portion of the high sound support, and the winding direction of the first high sound voice coil and the second high sound voice coil is opposite.The utility model loudspeaker adopts by setting the first high sound voice coil and the second high sound voice coil in the upper portion and lower portion of the high sound support, and two voice coils can simultaneously drive the high sound diaphragm, provide greater driving force for the vibration of high sound diaphragm, improve electromagnetic driving force, and then improve the high frequency performance of loudspeaker.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic technology, specifically to a loudspeaker. Background Technology

[0002] Loudspeakers, as transducers that convert electrical signals into sound signals, are used in electronic devices. The performance of loudspeaker components directly affects the sound quality of electronic equipment. In existing technologies, loudspeakers have limited installation space. Within this limited space, the magnetic circuit efficiency in the tweeter unit is low, resulting in a low high-frequency BL value (the product of the magnetic flux density B generated by the current in the loudspeaker's voice coil and the coil length L), which leads to high-frequency sound distortion in the loudspeaker.

[0003] Therefore, it is necessary to provide a loudspeaker that can improve the high-frequency performance of loudspeaker components. Utility Model Content

[0004] The purpose of this invention is to provide a loudspeaker with better high-frequency performance.

[0005] The technical solution of this utility model is as follows:

[0006] A loudspeaker includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to produce sound. The vibration system includes a tweeter unit disposed on one side of the magnetic circuit system. The tweeter unit includes a tweeter diaphragm and a tweeter voice coil assembly disposed on the side of the tweeter diaphragm near the magnetic circuit system. The tweeter voice coil assembly includes a tweeter support and a first tweeter voice coil and a second tweeter voice coil wound around the upper and lower parts of the tweeter support, wherein the winding directions of the first tweeter voice coil and the second tweeter voice coil are opposite.

[0007] Optionally, the tweeter support includes a cylindrical body arranged along the vibration direction of the vibration system and an earpiece disposed at one end of the cylindrical body away from the magnetic circuit system, the earpiece being connected to the tweeter diaphragm; the first tweeter voice coil is connected to the earpiece and the cylindrical body respectively, and the second tweeter voice coil is disposed at one end of the cylindrical body away from the first tweeter voice coil.

[0008] Optionally, a reinforcing plate is provided between the ear and the tweeter diaphragm, and the reinforcing plate has a clearance portion for avoiding the lead wire of the tweeter voice coil assembly.

[0009] Optionally, the tweeter bracket is a polyimide tweeter bracket or an aluminum alloy tweeter bracket.

[0010] Optionally, the first tweeter voice coil and the second tweeter voice coil are directly connected in series and wound on the tweeter bracket.

[0011] Optionally, the first tweeter voice coil and the second tweeter voice coil are wound separately and then glued or welded to the tweeter bracket.

[0012] Optionally, the magnetic circuit system includes a first magnetic cup, a central magnet and a first side magnet housed in the first magnetic cup, and a second side magnet disposed on the side of the central magnet near the vibration system. The first side magnet is spaced apart from the outer periphery of the central magnet, and both the first side magnet and the second side magnet are magnetized in opposite directions to the central magnet. The frame includes a first frame, the tweeter diaphragm is supported on the first frame, and the first frame is disposed on the second side magnet.

[0013] Optionally, the second side magnet has a hole structure in its central region, and a tweeter inner magnetic conductor is provided in the hole structure at a distance from the inner wall of the hole structure. The tweeter inner magnetic conductor is disposed on the central magnet, and a first magnetic gap is formed between the tweeter inner magnetic conductor and the inner wall of the second side magnet. The tweeter voice coil assembly is inserted into the first magnetic gap.

[0014] Optionally, the tweeter inner magnetic conductor is a tweeter inner magnetic sheet or a tweeter inner magnet.

[0015] Optionally, the tweeter unit further includes a flexible circuit board. The flexible circuit board is generally open and annular. The flexible circuit board includes a first segment and a second segment connected between the first segments. The first segment passes through the inner magnetic conductor of the tweeter and the center magnet, respectively. The second segment is connected to the top surface of the inner magnetic conductor of the tweeter and the bottom surface of the center magnet, respectively. The inner magnetic conductor of the tweeter and the center magnet are respectively provided with a first through hole and a second through hole for the first segment to pass through. The opening of the flexible circuit board is located in the second segment connected to the top surface of the inner magnetic conductor of the tweeter.

[0016] Optionally, the vibration system further includes a bass unit coaxially disposed with the tweeter, the bass unit being disposed around the outer periphery of the tweeter; the frame includes a second frame, and the bass unit includes a bass diaphragm fixed to the second frame and a bass voice coil for driving the bass diaphragm.

[0017] Optionally, a second magnetic gap is formed between the first side magnet and the center magnet, and the bass voice coil is inserted into the second magnetic gap.

[0018] The beneficial effects of this utility model are as follows: The loudspeaker of this utility model includes a tweeter unit equipped with the tweeter voice coil assembly. The tweeter voice coil assembly is achieved by setting a first tweeter voice coil and a second tweeter voice coil on the upper and lower parts of the tweeter bracket. Through optimized design of the magnetic circuit, the two voice coils can simultaneously drive the tweeter diaphragm, providing greater driving force for the vibration of the tweeter diaphragm, enhancing the electromagnetic driving force, and thus improving the high-frequency performance of the loudspeaker. It makes full use of limited space and maintains high performance while ensuring the miniaturization of the loudspeaker. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of the loudspeaker of this utility model.

[0020] Figure 2 This is an exploded schematic diagram of the loudspeaker of this utility model.

[0021] Figure 3 This is a top view of the loudspeaker of this utility model.

[0022] Figure 4 for Figure 3 View of a cross-section along AA.

[0023] Figure 5 for Figure 3 View of a cross-section along BB.

[0024] Figure 6 This is a schematic diagram of the structure of the tweeter voice coil assembly of this utility model.

[0025] Figure 7 This is a schematic diagram of the assembly structure of the flexible circuit board of the tweeter unit of this utility model. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] See Figures 1 to 6 As shown, a loudspeaker includes a frame 1, a vibration system 2 fixed to the frame 1, and a magnetic circuit system 3 for driving the vibration system 2 to produce sound. The vibration system 2 includes a tweeter 21 disposed on one side of the magnetic circuit system 3. The tweeter 21 includes a tweeter diaphragm 211 and a tweeter voice coil assembly 212 disposed on the side of the tweeter diaphragm 211 near the magnetic circuit system 3. The tweeter voice coil assembly 212 includes a tweeter support 2121 and a first tweeter voice coil 2122 and a second tweeter voice coil 2123 wound around the upper and lower parts of the tweeter support 2121, respectively. The winding directions of the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are opposite.

[0028] The loudspeaker of this invention includes a tweeter unit 21 equipped with the tweeter voice coil assembly 212. The tweeter voice coil assembly 212 employs a first tweeter voice coil 2122 and a second tweeter voice coil 2123 disposed on the upper and lower parts of the tweeter bracket 2121. Through optimized magnetic circuit design, the two voice coils can simultaneously drive the tweeter diaphragm 211, providing greater driving force for the vibration of the tweeter diaphragm 211, enhancing the electromagnetic driving force, and thus improving the high-frequency performance of the loudspeaker. This fully utilizes limited space, ensuring both miniaturization and high performance of the loudspeaker. It should be noted that the upper and lower parts refer to two portions arranged opposite to the vibration direction of the vibration system 2.

[0029] See Figure 6 As shown, the tweeter support 2121 includes a cylindrical body 21211 arranged along the vibration direction of the vibration system 2 and an earpiece 21212 disposed at one end of the cylindrical body 21211 away from the magnetic circuit system 3. The earpiece 21212 is connected to the tweeter diaphragm 211. The first tweeter voice coil 2122 is connected to the earpiece 21212 and the cylindrical body 21211 respectively. The second tweeter voice coil 2123 is disposed at one end of the cylindrical body 21211 away from the first tweeter voice coil 2122.

[0030] Further, see Figure 4 and Figure 5 As shown, in some other embodiments, a reinforcing plate 213 is also provided between the earpiece 21212 and the tweeter diaphragm 211 to improve the connection strength between the earpiece 21212 and the tweeter diaphragm 211 and ensure the overall stability of the speaker; the reinforcing plate 213 is provided with a clearance portion 2131 for avoiding the lead wire 2124 of the tweeter voice coil assembly 212.

[0031] Optionally, the tweeter bracket 2121 can be a polyimide tweeter bracket or an aluminum alloy tweeter bracket. The use of a lightweight yet strong polyimide or aluminum alloy tweeter bracket ensures stable support for the first and second tweeter voice coils while avoiding the impact of the tweeter bracket's own weight on the speaker's performance.

[0032] In some embodiments, the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are directly wound in series on the tweeter bracket 2121, that is, the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are directly wound on the tweeter bracket 2121. When the tweeter voice coil assembly 212 adopts this structure, it can be ensured that the first tweeter voice coil 2122 and the second tweeter voice coil 2123 can be directly connected in series with each other through winding.

[0033] In other embodiments, the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are wound separately and then glued or welded to the tweeter bracket 2121. That is, the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are wound and then assembled onto the tweeter bracket 2121, and then the first tweeter voice coil 2122 and the second tweeter voice coil 2123 are connected to the tweeter bracket 2121 by gluing or welding. This structure allows the first tweeter voice coil 2122 and the second tweeter voice coil 2123 to be separately formed and then assembled with the tweeter bracket 2121 during the manufacturing process, improving manufacturing efficiency.

[0034] See Figures 1 to 5 As shown, the magnetic circuit system 3 includes a first magnetic cup 31, a central magnet 32 ​​and a first side magnet 33 housed in the first magnetic cup 31, and a second side magnet 34 disposed on the side of the central magnet 32 ​​near the vibration system 2. The first side magnet 33 is spaced around the outer periphery of the central magnet 32, and both the first side magnet 33 and the second side magnet 34 are magnetized in opposite directions to the central magnet 32. A second magnetic cup 35 is provided on the side of the first side magnet 33 facing away from the first magnetic cup 31. The central magnet 32 ​​and the first side magnet 34 are... A third magnetic cup 36 is provided between the two side magnets 34. A fourth magnetic cup 37 is provided on the side of the second side magnet 34 away from the third magnetic cup 36. The side wall of the second magnetic cup 35 is aligned with the side wall of the first side magnet 33. The side wall of the third magnetic cup 36 is aligned with the side wall of the second side magnet 34. The basin frame 1 includes a first basin frame 11. The tweeter diaphragm 211 is supported on the first basin frame 11. The first basin frame 11 is disposed on the second side magnet 34. The fourth magnetic cup 37 is disposed inside the first basin frame 11.

[0035] The second side magnet 34 has a hole structure 341 in its central region. A tweeter inner magnetic conductor 342 is provided in the hole structure 341 and spaced apart from the inner wall of the hole structure 341. The inner wall of the fourth magnetic cup 37 is aligned with the inner wall of the second side magnet 34. The tweeter inner magnetic conductor 342 is provided on the central magnet 32. A first magnetic gap 38 is formed between the tweeter inner magnetic conductor 342 and the inner wall of the second side magnet 34. The tweeter voice coil assembly 212 is inserted into the first magnetic gap 38.

[0036] The tweeter internal magnetic conductor 342 is either a tweeter internal magnetic sheet or a tweeter internal magnet. When the tweeter internal magnetic conductor 342 is a tweeter internal magnetic sheet, the tweeter internal magnetic sheet is made of magnetic material by sintering or stamping.

[0037] See Figures 2 to 7As shown, the tweeter unit 21 also includes a flexible circuit board 214. The flexible circuit board 214 is generally open-ring shaped. The flexible circuit board 214 includes a first segment 2141 and a second segment 2142 connected between the first segment 2141. The first segment 2141 passes through the tweeter inner magnetic conductor 342 and the center magnet 32, respectively. The second segment 2142 is connected to the top surface of the tweeter inner magnetic conductor 342 and the bottom surface of the center magnet 32, respectively. The tweeter inner magnetic conductor 342 and the center magnet 32 ​​are respectively provided with a first through hole 3421 and a second through hole 321 for the flexible circuit board 214 to pass through. It should be noted that the top surface refers to the plane close to the first tweeter voice coil 2122, and the bottom surface refers to the plane close to the second tweeter voice coil 2123.

[0038] The vibration system 2 further includes a bass unit 22 coaxially arranged with the tweeter 21, the bass unit 22 surrounding the outer periphery of the tweeter 21; the frame 1 further includes a second frame 12, the bass unit 22 includes a bass diaphragm 221 fixed to the second frame 12 and a bass voice coil 222 driving the bass diaphragm 221, the bass voice coil 222 being disposed on the side of the bass diaphragm 221 near the magnetic circuit system 3, and the second frame 12 being disposed on the second magnetic cup 35. The second frame 12 is arranged around the outer periphery of the first frame 11 and coaxially with the first frame 11.

[0039] A second magnetic gap 39 is formed between the first side magnet 33 and the center magnet 32, and the bass voice coil 222 is inserted into the second magnetic gap 39.

[0040] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A loudspeaker, characterized in that, The device includes a frame, a vibration system fixed to the frame, and a magnetic circuit system for driving the vibration system to produce sound. The vibration system includes a tweeter unit disposed on one side of the magnetic circuit system. The tweeter unit includes a tweeter diaphragm and a tweeter voice coil assembly disposed on the side of the tweeter diaphragm near the magnetic circuit system. The tweeter voice coil assembly includes a tweeter support and a first tweeter voice coil and a second tweeter voice coil wound around the upper and lower parts of the tweeter support. The winding directions of the first tweeter voice coil and the second tweeter voice coil are opposite.

2. The loudspeaker according to claim 1, characterized in that, The tweeter support includes a cylindrical body arranged along the vibration direction of the vibration system and an earpiece located at one end of the cylindrical body away from the magnetic circuit system, the earpiece being connected to the tweeter diaphragm; the first tweeter voice coil is connected to the earpiece and the cylindrical body respectively, and the second tweeter voice coil is located at one end of the cylindrical body away from the first tweeter voice coil.

3. The loudspeaker according to claim 2, characterized in that, A reinforcing plate is provided between the ear and the tweeter diaphragm, and the reinforcing plate has a clearance portion for avoiding the lead wire of the tweeter voice coil assembly.

4. The loudspeaker according to claim 1, characterized in that, The tweeter bracket is a polyimide tweeter bracket or an aluminum alloy tweeter bracket.

5. The loudspeaker according to claim 1, characterized in that, The first tweeter voice coil and the second tweeter voice coil are directly connected in series and wound on the tweeter support.

6. The loudspeaker according to claim 1, characterized in that, The first tweeter voice coil and the second tweeter voice coil are wound separately and then glued or welded to the tweeter bracket.

7. The loudspeaker according to claim 1, characterized in that, The magnetic circuit system includes a first magnetic cup, a central magnet and a first side magnet housed in the first magnetic cup, and a second side magnet disposed on the side of the central magnet near the vibration system. The first side magnet is spaced apart from the outer periphery of the central magnet, and both the first side magnet and the second side magnet are magnetized in opposite directions to the central magnet. The frame includes a first frame, the tweeter diaphragm is supported on the first frame, and the first frame is disposed on the second side magnet.

8. The loudspeaker according to claim 7, characterized in that, The second side magnet has a hole structure in the center area, and a tweeter inner magnetic conductor is provided in the hole structure and spaced apart from the inner wall of the hole structure. The tweeter inner magnetic conductor is provided on the center magnet, and a first magnetic gap is formed between the tweeter inner magnetic conductor and the inner wall of the second side magnet. The tweeter voice coil assembly is inserted into the first magnetic gap.

9. The loudspeaker according to claim 8, characterized in that, The tweeter internal magnetic conductor is a tweeter internal magnetic sheet or a tweeter internal magnet.

10. The loudspeaker according to claim 8, characterized in that, The tweeter unit also includes a flexible circuit board, which is generally open and annular. The flexible circuit board includes a first segment and a second segment connected between the first segments. The first segment passes through the inner magnetic conductor of the tweeter and the center magnet, respectively. The second segment is connected to the top surface of the inner magnetic conductor of the tweeter and the bottom surface of the center magnet, respectively. The inner magnetic conductor of the tweeter and the center magnet are respectively provided with a first through hole and a second through hole for the first segment to pass through. The opening of the flexible circuit board is located in the second segment connected to the top surface of the inner magnetic conductor of the tweeter.

11. The loudspeaker according to claim 7, characterized in that, The vibration system further includes a bass unit coaxially disposed with the tweeter, the bass unit being arranged around the outer periphery of the tweeter; the frame includes a second frame, and the bass unit includes a bass diaphragm fixed to the second frame and a bass voice coil for driving the bass diaphragm.

12. The loudspeaker according to claim 11, characterized in that, A second magnetic gap is formed between the first side magnet and the center magnet, and the bass voice coil is inserted into the second magnetic gap.

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