A loudspeaker FPC structure and a loudspeaker

Abstract

The utility model relates to the technical field of loudspeaker, concretely relates to a loudspeaker FPC structure and loudspeaker, it includes support and respectively located vibration subassembly and magnetic circuit subassembly in the upper and lower end of support, vibration subassembly includes the vibration diaphragm that is located on the support, the diaphragm that vibration diaphragm middle department is equipped with and the voice coil that is located below vibration diaphragm, the support still is equipped with integrated FPC structure, integrated FPC structure sets up below the voice coil, integrated FPC structure still has the terminal that is integrated with pair distribution, the utility model integrates the terminal directly in integrated FPC structure, has saved the procedure of welding, need not additional connection external pad again, has improved the production efficiency of loudspeaker greatly, integrated FPC structure integrates main terminal and test terminal, makes loudspeaker use test terminal to develop test work in test link priority, avoids the damage of the main terminal that has integrated good because of test link, guarantees main terminal to be in normal working state, improves the yield of loudspeaker.

Description

Technical Field

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

[0002] The loudspeaker usually referred to is a moving-coil loudspeaker. Its working principle (physical principle) is similar to that of a traditional moving-coil loudspeaker: a changing audio electrical signal is fed into the voice coil, which is placed in the magnetic gap of a permanent magnet circuit. The voice coil vibrates up and down due to the changing electromagnetic field force (Lorentz force) generated by the changing current, which drives the diaphragm to drive the air in front and behind, generating sound waves.

[0003] In the loudspeaker manufacturing process, FPC (Flexible Printed Circuit) is an important electrical connection component. Traditionally, FPCs are assembled into loudspeakers using a whole-circle printing method. During installation, the connecting parts need to be removed. Laser cutting can easily cause the glue to carbonize, affecting the fixing effect. Its terminals are usually soldered to the FPC using pads, which requires high soldering stability. In the loudspeaker product testing stage, if the traditional loudspeaker FPC terminals are damaged during testing, they must be re-soldered, which greatly affects the loudspeaker production efficiency and can easily lead to a low yield rate of loudspeakers due to the testing process. Utility Model Content

[0004] The purpose of this invention is to provide a speaker FPC structure and speaker, aiming to improve the process of additional soldering terminals in FPC and the problem of terminal damage during testing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A loudspeaker FPC structure includes a bracket and a vibration component and a magnetic circuit component respectively disposed at the upper and lower ends of the bracket. The vibration component includes a diaphragm disposed on the bracket, a diaphragm sheet disposed in the middle of the diaphragm, and a voice coil disposed below the diaphragm. The bracket also has an integrated FPC structure disposed below the voice coil. The integrated FPC structure also integrates paired terminals.

[0007] Preferably, the integrated FPC structure includes a split first FPC board and a second FPC board disposed on both sides of the bracket, and the voice coil is mounted on the first FPC board and the second FPC board.

[0008] Preferably, both the first FPC board and the second FPC board are provided with a first fixing part and a second fixing part, and a connecting part for connecting the first fixing part and the second fixing part. The connecting part is arranged in an S-shaped structure, and the second fixing part is in contact with the bottom surface of the voice coil.

[0009] Preferably, the second FPC board further extends a third fixing part, which integrates a main terminal.

[0010] Preferably, test terminals are also integrated on both sides of the first fixing part of the second FPC board.

[0011] Preferably, the main terminal and the test terminal are integrated on the same plane of the second FPC board, and both the test terminal and the main terminal are electrically connected to the second FPC board.

[0012] Preferably, the first FPC board also has an extension plate extending outwards.

[0013] Preferably, the support is further provided with a cover plate covering the vibration component, and the cover plate is also provided with a hollow area and a protective cover provided above the hollow area.

[0014] Preferably, the magnetic circuit assembly includes a U-cup, a magnet disposed in the U-cup, and a washer disposed on the magnet, the voice coil is disposed on the outer periphery of the magnet and the washer, and the integrated FPC structure is disposed between the mating surfaces of the bracket and the U-cup.

[0015] Another object of this invention is to provide a loudspeaker, including the loudspeaker FPC structure as described above.

[0016] By adopting the above technical solution, this utility model has the following advantages compared with the prior art:

[0017] 1. This utility model directly integrates the terminals into the integrated FPC structure, eliminating the soldering process and the need for additional external solder pads, which greatly improves the production efficiency of the speaker.

[0018] 2. The integrated FPC structure of this utility model integrates the main terminal and the test terminal, so that the speaker can use the test terminal first during the testing process, avoiding damage to the integrated main terminal caused by the testing process, ensuring that the main terminal is in normal working condition, and improving the yield rate of the speaker.

[0019] 3. The integrated FPC of this utility model sets the split first FPC board and second FPC board in the frame, eliminating the laser cutting process inside the speaker, optimizing the speaker manufacturing process, reducing the use of materials for the first FPC board and second FPC board, and avoiding the carbonization of the glue caused by laser internal cutting, thus ensuring the normal use effect of the glue. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the speaker FPC structure described in this utility model;

[0021] Figure 2 This is a three-dimensional schematic diagram of the separate structure of the speaker FPC structure described in this utility model;

[0022] Figure 3 This is a three-dimensional schematic diagram of the magnetic component of the speaker FPC structure described in this utility model.

[0023] Figure 4 This is a schematic diagram of the planar structure of the integrated FPC structure of the speaker FPC structure described in this utility model;

[0024] Figure 5 This is a three-dimensional structural diagram of the integrated FPC structure of the speaker FPC structure described in this utility model;

[0025] Figure 6 This is a cross-sectional view of the speaker FPC structure described in this utility model.

[0026] Explanation of reference numerals in the attached figures:

[0027] 100. Bracket; 200. Vibration assembly; 300. Magnetic assembly; 400. Integrated FPC structure; 500. Terminal; 600. Housing;

[0028] 210. Diaphragm; 220. Auxiliary diaphragm; 230. Voice coil;

[0029] 310. U-cup; 320. Magnet; 330. Washer;

[0030] 410. First FPC board; 420. Second FPC board;

[0031] 430. First fixing part; 440. Second fixing part; 450. Third fixing part;

[0032] 510. Main terminal; 520. Test terminal;

[0033] 610. Protective cover; 620. Hollowed-out area. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0035] Additionally, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" are all based on the orientation or positional relationship shown in the accompanying drawings. They are merely for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element of this utility model must have a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0036] When an element is referred to as "fixed to," "set on," or "located on" another element, it can be directly on or indirectly on that other element. When an element is referred to as "connected to," it can be directly connected to or indirectly connected to that other element.

[0037] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0038] Example 1

[0039] Please refer to Figure 1-6 As shown, this embodiment provides a loudspeaker FPC structure, including a bracket 100 and a vibration assembly 200 and a magnetic circuit assembly respectively disposed at the upper and lower ends of the bracket 100. The vibration assembly 200 includes a diaphragm 210 disposed on the bracket 100, a diaphragm sheet in the middle of the diaphragm 210, and a voice coil 230 disposed below the diaphragm 210. The bracket 100 also has an integrated FPC structure 400, as shown in the attached figure. Figure 2 As shown, the integrated FPC structure 400 is located below the voice coil 230. The integrated FPC structure 400 also integrates paired terminals 500. The terminals 500 are directly integrated into the integrated FPC structure 400, eliminating the need for additional external solder pads. This further optimizes the speaker manufacturing process and improves product production efficiency.

[0040] As attached Figure 3As shown, the integrated FPC structure 400 further includes a split first FPC board 410 and a second FPC board 420 disposed on both sides of the support 100. A voice coil 230 is mounted above the first FPC board 410 and the second FPC board 420. The first FPC board 410 and the second FPC board 420 are arranged in a surrounding manner below the voice coil 230, providing support and bolstering for the voice coil 230, and enabling the voice coil 230 to fit against the diaphragm 210. The split configuration of the first FPC board 410 and the second FPC board 420... The FPC board 420 can be directly assembled onto the bracket 100, reducing material usage, avoiding material waste and subsequent cutting and grinding processes, and significantly reducing production costs. There is no internal connecting waste, no need for laser cutting, and no carbonization of the adhesive, allowing the adhesive to maintain its original bonding strength. This reduces damage to the integrated FPC structure 400 caused by trimming processes, eliminating the need to trim the integrated FPC structure 400 during speaker assembly, making the integrated FPC structure 400 ready for use immediately after injection molding.

[0041] As attached Figure 5 As shown, both the first FPC board 410 and the second FPC board 420 are provided with a first fixing part 430 and a second fixing part 440, and a connecting part for connecting the first fixing part 430 and the second fixing part 440. The connecting part is arranged in an S-shape. The second fixing part 440 is in contact with the bottom surface of the voice coil 230. The first fixing part 430 is located on one side of the frame, and the second fixing part 440 is in contact with the voice coil 230. The first fixing part 430 and the second fixing part 440 can be elastically deformed relative to each other through the connecting part arranged in an S-shape. When the first fixing part 430 is fixed on the frame, the second fixing part 440 can obtain a certain elastic interaction margin through the connecting part. During the process of the voice coil 230 being energized, the voice coil 230 vibrates up and down due to the driving force of the changing electromagnetic field generated by the changing current. The voice coil 230 can be elastically reset through the second fixing part 440 provided on one side of the connecting part. After being energized, the voice coil 230 can move up and down through the first FPC plate 410 and the second FPC plate 420, and drive the diaphragm 210 to drive the air in front and behind, generating sound waves.

[0042] As attached Figure 5 As shown, the second FPC board 420 further extends into a third fixing part 450. The third fixing part 450 extends into a frame to provide a larger mating space for the terminals 500 provided on the second FPC board 420. The third fixing part 450 integrates a main terminal 510, which is used for electrical connection with other components.

[0043] As shown in Figure 5, the second FPC board 420 further integrates test terminals 520 on both sides of the first fixing part 430. The test terminals 520 provide testing functions for the second FPC board 420, solving the problem that the test process may damage the terminal 500, thus affecting the speaker function.

[0044] As attached Figure 5 As shown, the main terminal 510 and the test terminal 520 are integrated on the same plane of the second FPC board 420. Both the test terminal 520 and the main terminal 510 are electrically connected to the second FPC board 420. During the testing process, the test terminal 520 is used first to carry out the testing work, so as to avoid damage to the already integrated main terminal 510 due to the testing process, which would cause the speaker to not work properly after production. Using the test terminal 520 as a testing method can effectively ensure the functionality of the main terminal 510 and will not affect the testing effect of the original testing process.

[0045] As attached Figure 5 As shown, the first FPC board 410 further extends with an extension board, which facilitates the loading of the first FPC board 410. After the installation of the first FPC board is completed, the extension board can be cut. At this time, since the operation is performed outside the speaker, it will not affect the internal components.

[0046] As attached Figure 2 As shown, further, a cover plate covering the vibration component 200 is provided above the bracket 100. The cover plate also has a hollow area 620 and a protective cover above the hollow area 620. The cover plate is located above the bracket 100 and can shield and protect the vibration component 200 in the bracket 100 to prevent dust from entering the speaker. At the same time, it provides a sound cavity for the speaker. The hollow area 620 and the protective cover of the cover plate further provide the sound cavity with the opportunity to contact with air, ensuring the sound effect of the speaker.

[0047] As attached Figure 6As shown, the magnetic circuit assembly further includes a U-cup 310, a magnet 320 disposed in the U-cup 310, and a washer 330 disposed on the magnet 320. The voice coil 230 is disposed on the outer periphery of the magnet 320 and the washer 330. The magnet 320 and the washer 330 are disposed opposite the center of the voice coil 230. The magnet 320 and the washer 330 are located inside the voice coil 230 so that the voice coil 230 can move linearly along the Z-axis of the magnet 320, driving the diaphragm 210 to vibrate through the diaphragm. The integrated FPC structure 400 is disposed between the mating surfaces of the bracket 100 and the U-cup 310. The first FPC plate 410 and the second FPC plate 420 are fixed with the U-cup 310 and the bracket 100 through the provided second fixing part 440. After the U-cup 310 and the bracket 100 are assembled together, they will clamp the first FPC plate 410 and the second FPC plate 420, keeping them in a horizontal position to support the voice coil 230.

[0048] Example 2

[0049] like Figure 1 As shown, a loudspeaker is also provided, which includes the loudspeaker FPC structure described in Embodiment 1. The integrated FPC adopts a split first FPC board 410 and a second FPC board 420 disposed in a frame, eliminating the laser cutting process, optimizing the loudspeaker manufacturing process, so that the first FPC board 410 and the second FPC board 420 reduce the use of materials, while also avoiding the carbonization of glue caused by laser cutting, ensuring the normal use effect of the glue.

[0050] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.

Claims

1. A loudspeaker FPC structure, comprising a bracket and a vibration assembly and a magnetic circuit assembly respectively disposed at the upper and lower ends of the bracket, wherein the vibration assembly comprises a diaphragm disposed on the bracket, a diaphragm sheet disposed in the middle of the diaphragm, and a voice coil disposed below the diaphragm, characterized in that: The bracket also has an integrated FPC structure, which is located below the voice coil and also integrates paired terminals.

2. The loudspeaker FPC structure according to claim 1, characterized in that: The integrated FPC structure includes a split first FPC board and a second FPC board located on both sides of the bracket, and the voice coil is mounted on the first FPC board and the second FPC board.

3. The loudspeaker FPC structure according to claim 2, characterized in that: Both the first FPC board and the second FPC board are provided with a first fixing part and a second fixing part, as well as a connecting part for connecting the first fixing part and the second fixing part. The connecting part is arranged in an S-shaped structure, and the second fixing part is in contact with the bottom surface of the voice coil.

4. The loudspeaker FPC structure according to claim 3, characterized in that: The second FPC board also extends a third fixing part, which integrates a main terminal.

5. The loudspeaker FPC structure according to claim 4, characterized in that: The second FPC board also integrates test terminals on both sides of the first fixing part.

6. The loudspeaker FPC structure according to claim 5, characterized in that: The main terminal and the test terminal are integrated on the same plane of the second FPC board, and both the test terminal and the main terminal are electrically connected to the second FPC board.

7. The loudspeaker FPC structure according to claim 2, characterized in that: The first FPC board also has an extension board extending outwards.

8. The loudspeaker FPC structure according to claim 1, characterized in that: The support is also provided with a cover plate covering the vibration component, and the cover plate is also provided with a hollow area and a protective cover provided above the hollow area.

9. The loudspeaker FPC structure according to claim 1, characterized in that: The magnetic circuit assembly includes a U-cup, a magnet disposed in the U-cup, and a washer disposed on the magnet. The voice coil is disposed on the outer periphery of the magnet and the washer. The integrated FPC structure is disposed between the mating surfaces of the bracket and the U-cup.

10. A loudspeaker, characterized in that, Includes the speaker FPC structure as described in any one of claims 1 to 9.

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