An ultrathin loudspeaker

Abstract

The utility model relates to a kind of ultrathin loudspeaker, including basin frame and the voice coil and the elastic wave of being set in basin frame, the inner edge of elastic wave is fixedly connected to the outer surface of voice coil periphery, the outer edge of elastic wave is fixedly connected to the inner wall surface of basin frame, the outer side wall of basin frame is provided with mounting groove, PCB terminal plate is embedded in mounting groove, the board surface of PCB terminal plate towards mounting groove slot is respectively provided with positive electrode conductive layer and negative electrode conductive layer distributed with interval, two silk threads wound from the same side of voice coil are respectively connected to positive electrode conductive layer and negative electrode conductive layer by soldering.The utility model integrates PCB terminal plate and is embedded in mounting groove, can make full use of lateral space, avoid the protrusion of basin frame in vertical direction, effectively reduce the vertical thickness of basin frame;And two silk threads are directly soldered with positive electrode and negative electrode conductive layer on PCB terminal plate, using one PCB terminal plate can, so that loudspeaker overall structure is more compact and simple.

Description

Technical Field

[0001] This utility model relates to the field of electroacoustic device technology, and in particular to an ultra-thin loudspeaker. Background Technology

[0002] As a transducer that converts electrical signals into sound signals, loudspeakers are widely used in various electronic devices such as smartphones, tablets, laptops, and smart wearable devices. With the rapid development of modern electronic devices towards thinner, lighter, smaller, and higher-performance designs, increasingly stringent requirements are being placed on the ultra-thin design of the accompanying loudspeakers to accommodate the limited installation space within the devices while simultaneously meeting the overall thinner and lighter requirements of the devices.

[0003] Currently, traditional loudspeaker terminal connection structures typically employ a method of vertically mounting a terminal block on the speaker frame and then attaching connecting tabs to the terminal block. This mounting structure results in a protruding portion of the frame in the vertical direction, increasing its vertical thickness and hindering the achievement of ultra-thin loudspeaker designs. Furthermore, traditional structures often require multiple terminal assemblies to connect to the filament wires leading from the voice coil. This not only increases the number of components on the loudspeaker but also makes the overall structure less compact and streamlined, further limiting the potential for thinner and smaller loudspeakers and failing to adequately meet the application requirements of current electronic devices for ultra-thin loudspeakers. Utility Model Content

[0004] Therefore, it is necessary to provide an ultra-thin speaker.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: An ultra-thin loudspeaker includes a frame and a voice coil and a spider disposed in the frame. The inner edge of the spider is circumferentially fixed to the outer surface of the voice coil, and the outer edge of the spider is circumferentially fixed to the inner wall of the frame. A mounting groove is provided through one outer wall of the frame. A PCB terminal board is embedded in the mounting groove. A positive conductive layer and a negative conductive layer are respectively provided on the surface of the PCB terminal board facing the opening of the mounting groove. Two filaments wound from the same side of the voice coil are respectively connected to the positive conductive layer and the negative conductive layer by soldering.

[0006] Furthermore, the longitudinal section of the PCB terminal board is an arc-shaped strip, and the two opposite ends of the PCB terminal board are provided with positioning notches. The mounting groove has positioning protrusions on the groove wall corresponding to the positioning notch that are adapted to the shape of the positioning notch.

[0007] Furthermore, a third insulating layer is provided on the surface of the PCB terminal board, and the positive conductive layer and the negative conductive layer are located on both sides of the third insulating layer.

[0008] Furthermore, a positioning hole is provided through the area of ​​the third insulating layer on the PCB terminal board, and a positioning post protrudes from the groove wall corresponding to the positioning hole and is inserted into the positioning hole.

[0009] Furthermore, the positive conductive layer also forms a first positive conductive portion and a second positive conductive portion on both sides of the first insulating layer by laying a first insulating layer in the middle, and the negative conductive layer also forms a first negative conductive portion and a second negative conductive portion on both sides of the second insulating layer by laying a second insulating layer in the middle; the first positive conductive portion and the first negative conductive portion are each connected to the corresponding filament wire, and the second positive conductive portion and the second negative conductive portion are each connected to the corresponding external wire.

[0010] Furthermore, two wire guide slots are provided on both sides of the mounting slot of the basin frame. The first positive conductive part is located at the side end of one wire guide slot, and the first negative conductive part is located at the side end of the other wire guide slot. The two brocade wires pass through the two wire guide slots respectively and are connected to the corresponding first positive conductive part and first negative conductive part.

[0011] Furthermore, the wire groove is provided with rounded corners.

[0012] Furthermore, the ultra-thin loudspeaker also includes a cone assembled at the top of the frame and a dust cover located in the center area of ​​the cone. The cone and the dust cover are integrally formed, and the inner end of the dust cover is connected to the top of the voice coil.

[0013] Furthermore, the top surface of the speaker rack is recessed inward to form a receiving groove for accommodating the speaker cone and dust cover.

[0014] Furthermore, the ultra-thin speaker also includes a U-shaped iron, a magnet, and a washer. The magnet is disposed inside the U-shaped iron, the washer is connected to the magnet, and the U-shaped iron is fixed to the bottom end of the speaker frame.

[0015] By adopting the above technical solution, the present invention has at least the following beneficial effects: The present invention provides a through mounting groove on one side of the speaker frame, and the terminal structure adopts the structure of a PCB terminal board, which integrates and embeds the PCB terminal board in the mounting groove. This makes full use of the lateral space, avoids the speaker frame from protruding in the vertical direction, effectively reduces the vertical thickness of the speaker frame, and makes the speaker as a whole ultra-thin speaker. At the same time, only two wires on the same side need to be directly soldered to the positive and negative conductive layers on the PCB terminal board, and only one PCB terminal board is needed, which reduces the number of components on the speaker and makes the overall structure of the speaker more compact and simple. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the combined state of an optional embodiment of the ultra-thin speaker of this utility model;

[0018] Figure 2 This is a structural schematic diagram of another viewpoint combination state of an optional embodiment of the ultra-thin speaker of this utility model;

[0019] Figure 3 This is a partially disassembled structural diagram of an optional embodiment of the ultra-thin speaker of this utility model.

[0020] Figure 4 This is a schematic diagram of the frame structure of an optional embodiment of the ultra-thin speaker of this utility model;

[0021] Figure 5 This is a cross-sectional schematic diagram of an optional embodiment of the ultra-thin speaker of this utility model.

[0022] In the attached diagram: 1. Bass frame; 10. Mounting groove; 101. Positioning protrusion; 102. Positioning post; 11. Wire channel; 110. Rounded corner; 12. Receiving groove; 2. Voice coil; 21. Cotton wire; 3. Spring coil; 4. PCB terminal board; 411. First insulating layer; 412. First positive conductive part; 413. Second positive conductive part; 421. Second insulating layer; 422. First negative conductive part; 423. Second negative conductive part; 43. Positioning notch; 44. Third insulating layer; 45. Positioning hole; 5. Cone; 6. Dust cover; 7. U-shaped iron; 8. Magnet; 9. Washer. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0024] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0025] like Figures 1-5 As shown, an optional embodiment of this utility model provides an ultra-thin loudspeaker, including a frame 1 and a voice coil 2 and a spider 3 disposed within the frame 1. The inner edge of the spider 3 is circumferentially fixed to the outer surface of the voice coil 2, and the outer edge of the spider 3 is circumferentially fixed to the inner wall of the frame 1. A mounting groove 10 is provided through one outer wall of the frame 1. A PCB terminal board 4 is embedded in the mounting groove 10. A positive conductive layer and a negative conductive layer are respectively provided on the surface of the PCB terminal board 4 facing the opening of the mounting groove 10. Two filament wires 21 wound from the same side of the voice coil 2 are respectively connected to the positive conductive layer and the negative conductive layer by soldering.

[0026] This embodiment of the invention utilizes a through mounting groove 10 on one side of the speaker frame 1. The terminal structure employs a PCB terminal board 4, which is integrated and embedded within the mounting groove 10. This fully utilizes lateral space, prevents the speaker frame 1 from protruding vertically, effectively reduces the vertical thickness of the speaker frame 1, and allows for an ultra-thin overall speaker design. Furthermore, only two wires 21 on the same side need to be directly soldered to the positive and negative conductive layers on the PCB terminal board 4, requiring only one PCB terminal board 4. This reduces the number of components on the speaker, resulting in a more compact and simpler overall structure. In practice, the PCB terminal board 4 is fixed to the mounting groove 10 using adhesive.

[0027] In one optional embodiment of this utility model, such as Figures 1-3As shown, the longitudinal section of the PCB terminal board 4 is an arc-shaped elongated strip, and positioning notches 43 are provided at opposite ends of the PCB terminal board 4. The mounting groove 10 has positioning protrusions 101 on its groove wall corresponding to the positioning notches 43, which are adapted to the shape of the positioning notches 43. In this embodiment, the longitudinal section of the PCB terminal board 4 is an arc-shaped elongated strip, which is adapted to the shape of the mounting groove 10. Its thickness is flush with the height of the mounting groove 10, and it can form an integral structure with the outer periphery of the frame 1. In addition, the positioning notches 43 make it possible for the PCB terminal board 4 to be inserted into the mounting groove 10 in a specific way during installation, thereby avoiding rotation or misalignment of the PCB terminal board 4 in the mounting groove 10, resulting in a good assembly effect.

[0028] In one optional embodiment of this utility model, such as Figure 2 As shown, a third insulating layer 44 is also provided on the surface of the PCB terminal board 4, with the positive conductive layer and the negative conductive layer located on both sides of the third insulating layer 44. In this embodiment, by providing the third insulating layer 44, the positive conductive layer and the negative conductive layer can be effectively isolated to prevent short circuits.

[0029] In one optional embodiment of this utility model, such as Figures 2-5 As shown, a positioning hole 45 is also provided through the area of ​​the third insulating layer 44 on the PCB terminal board 4. A positioning post 102 protrudes from the groove wall of the mounting groove 10 corresponding to the positioning hole 45 and is inserted into the positioning hole 45. In this embodiment, the cooperative arrangement of the positioning hole 45 and the positioning post 102 can improve the stability of the PCB terminal board 4 in the mounting groove 10, making the installation of the PCB terminal board 4 simpler and faster, and improving the assembly efficiency.

[0030] In one optional embodiment of this utility model, such as Figure 2As shown, the positive conductive layer also has a first positive conductive portion 412 and a second positive conductive portion 413 formed on both sides of the first insulating layer 411 through the middle of the first insulating layer 411. The negative conductive layer also has a first negative conductive portion 422 and a second negative conductive portion 423 formed on both sides of the second insulating layer 421 through the middle of the second insulating layer 421. The first positive conductive portion 412 and the first negative conductive portion 422 are each connected to the corresponding brocade wire 21, and the second positive conductive portion 413 and the second negative conductive portion 423 are each connected to the corresponding external wire (not shown in the figure). In this embodiment, by providing a first insulating layer 411 and a second insulating layer 421, the first positive conductive part 412 and the second positive conductive part 413 can be independently connected to the brocade wire 21 through the isolation of the first insulating layer 411. Similarly, the first negative conductive part 422 and the second negative conductive part 423 are also independently connected to the external wires through the isolation of the second insulating layer 421, effectively avoiding the risk of current short circuit and enhancing the stability of the speaker.

[0031] In one optional embodiment of this utility model, such as Figures 2-4 As shown, two wire guide grooves 11 are provided on both sides of the mounting groove 10 adjacent to the basin frame 1. The first positive conductive part 412 is located at the side end of one wire guide groove 11, and the first negative conductive part 422 is located at the side end of the other wire guide groove 11. The two nylon wires 21 pass through the two wire guide grooves 11 respectively and are connected to the corresponding first positive conductive part 412 and first negative conductive part 422. In this embodiment, the wire guide grooves 11 provided on the basin frame 1 allow the nylon wires 21 to pass through stably and connect to the corresponding conductive parts. In specific implementation, the corresponding sections of the nylon wires 21 can also be fixed in the wire guide grooves with adhesive to ensure the stable connection of the nylon wires 21.

[0032] In one optional embodiment of this utility model, such as Figure 3 As shown, the wire guide groove 11 is provided with a rounded corner portion 110. In this embodiment, by providing a rounded corner portion 110 in the wire guide groove 11, the nylon thread 21 can pass through the wire guide groove 11 more smoothly, while reducing the risk of the nylon thread 21 being damaged due to friction.

[0033] In one optional embodiment of this utility model, such as Figure 1 , Figure 3 and Figure 5As shown, the ultra-thin loudspeaker also includes a cone 5 assembled at the top of the frame 1 and a dust cover 6 located in the central area of ​​the cone 5. The cone 5 and the dust cover 6 are integrally formed, and the inner end of the dust cover 6 is connected to the top of the voice coil 2. In this embodiment, the cone 5 and the dust cover 6 are integrally formed, which enhances the stability of the structure and simplifies the assembly process.

[0034] In one optional embodiment of this utility model, such as Figure 4 As shown, the top surface of the speaker frame 1 is also recessed inward to form a receiving groove 12 for accommodating the cone 5 and the dust cover 6. In this embodiment, by providing the inwardly recessed receiving groove 12 on the top surface of the speaker frame 1, the overall structural layout of the speaker is optimized, making it more compact and aesthetically pleasing, while further reducing the overall thickness of the speaker.

[0035] In one optional embodiment of this utility model, such as Figure 5 As shown, the ultra-thin speaker also includes a U-shaped iron 7, a magnet 8, and a washer 9. The magnet 8 is disposed inside the U-shaped iron 7, and the washer 9 is connected to the magnet 8. The U-shaped iron 7 is fixed to the bottom end of the frame 1. The magnet 8 and the washer 9 are disposed inside the voice coil 2. In this embodiment, the combination of the U-shaped iron 7, the magnet 8, and the washer 9 effectively enhances the magnetic field strength of the speaker, ensuring sound output efficiency and sound quality performance.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An ultra-thin loudspeaker, comprising a frame and a voice coil and a spider disposed within the frame, wherein the inner edge of the spider is circumferentially fixedly connected to the outer surface of the voice coil, and the outer edge of the spider is circumferentially fixedly connected to the inner wall surface of the frame, characterized in that, A mounting groove is provided through one outer side wall of the frame, and a PCB terminal board is embedded in the mounting groove. The PCB terminal board has a positive conductive layer and a negative conductive layer that are spaced apart on the surface of the board facing the mounting groove. Two filament wires that are wound from the same side of the voice coil are respectively connected to the positive conductive layer and the negative conductive layer by soldering.

2. The ultra-thin loudspeaker according to claim 1, characterized in that, The longitudinal section of the PCB terminal board is an arc-shaped strip, and the two opposite ends of the PCB terminal board are provided with positioning notches. The mounting groove has positioning protrusions on the groove wall corresponding to the positioning notches, which are adapted to the shape of the positioning notches.

3. The ultra-thin loudspeaker according to claim 2, characterized in that, The PCB terminal board is further provided with a third insulating layer, and the positive conductive layer and the negative conductive layer are located on both sides of the third insulating layer.

4. The ultra-thin loudspeaker according to claim 3, characterized in that, A positioning hole is also provided through the area of ​​the third insulating layer on the PCB terminal board, and a positioning post is provided on the groove wall corresponding to the positioning hole and inserted into the positioning hole.

5. The ultra-thin loudspeaker according to claim 1, characterized in that, The positive conductive layer also forms a first positive conductive portion and a second positive conductive portion on both sides of the first insulating layer by laying a first insulating layer in the middle. The negative conductive layer also forms a first negative conductive portion and a second negative conductive portion on both sides of the second insulating layer by laying a second insulating layer in the middle. The first positive conductive portion and the first negative conductive portion are each connected to the corresponding filament wire, and the second positive conductive portion and the second negative conductive portion are each connected to the corresponding external wire.

6. The ultra-thin loudspeaker according to claim 5, characterized in that, Two wire guide slots are provided on both sides of the mounting slot of the basin frame. The first positive conductive part is located at the side end of one wire guide slot, and the first negative conductive part is located at the side end of the other wire guide slot. The two brocade wires pass through the two wire guide slots respectively and are connected to the corresponding first positive conductive part and first negative conductive part.

7. The ultra-thin loudspeaker according to claim 6, characterized in that, The cable tray has rounded corners.

8. The ultra-thin loudspeaker according to claim 1, characterized in that, The ultra-thin loudspeaker also includes a cone assembled at the top of the frame and a dust cover located in the center area of ​​the cone. The cone and the dust cover are integrally formed, and the inner end of the dust cover is connected to the top of the voice coil.

9. The ultra-thin loudspeaker according to claim 8, characterized in that, The top surface of the speaker rack is also recessed inward to form a receiving groove for accommodating the speaker cone and dust cover.

10. The ultra-thin loudspeaker according to claim 8, characterized in that, The ultra-thin speaker also includes a U-shaped iron, a magnet, and a washer. The magnet is located inside the U-shaped iron, the washer is connected to the magnet, and the U-shaped iron is fixed to the bottom end of the frame.

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