An ultra-thin dual-unit combined speaker

Abstract

This utility model discloses an ultra-thin dual-unit combined speaker, including a woofer and a tweeter. The woofer includes a woofer T-iron, a woofer magnet, and a woofer frame. The woofer frame is disposed on the outer side of the bottom edge of the woofer T-iron, and the woofer magnet is disposed between the woofer T-iron and the woofer frame. The woofer magnet is adhered to the top of the bottom edge of the woofer T-iron. The tweeter is embedded in the bottom center hole of the woofer T-iron. Through the external magnet structure design, the size of the center hole of the woofer T-iron can be maximized, allowing the tweeter to be placed inside the woofer T-iron. Thus, the combined height of the two speakers is still the height of a single woofer, achieving the performance of two speakers. This allows the overall speaker size to be made very small, facilitating use with TWS or OWS Bluetooth headsets.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and more specifically, to an ultra-thin dual-unit combined loudspeaker. Background Technology

[0002] To ensure increasingly better sound quality, headphones and other electroacoustic products often contain at least two speakers: one for low frequencies and one for high frequencies.

[0003] Dual-driver speaker modules are becoming increasingly common in the market, but most still use the traditional stacked speaker structure: a woofer at the bottom and a tweeter glued to its front cover. This increases the overall thickness of the combined speaker assembly by 50%. However, as headphones and other electroacoustic products become smaller, the size requirements for the core speaker components also need to decrease. Therefore, the traditional size of dual-driver speakers is no longer suitable for the future development of headphones. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the large size of existing dual-unit speakers and to provide an ultra-thin dual-unit combined speaker to solve the above-mentioned shortcomings.

[0005] To achieve the above objectives, the technical solution provided by this utility model is as follows: An ultra-thin dual-unit speaker includes a woofer and a tweeter. The woofer includes a woofer T-iron, a woofer magnet, and a woofer frame. The woofer frame is disposed on the outside of the bottom edge of the woofer T-iron. The woofer magnet is disposed between the woofer T-iron and the woofer frame. The woofer magnet is bonded to the top of the bottom edge of the woofer T-iron. The tweeter is embedded in the bottom center hole of the woofer T-iron.

[0006] Furthermore, the bass T-shaped iron is integrally formed from a positioning part, an assembly part, and an outer edge part.

[0007] Furthermore, the woofer also includes a bass washer, a bass voice coil, and a bass diaphragm. The bass washer is bonded to the top of the bass magnet. The bass diaphragm is bonded to the top of the bass frame. The bass voice coil is bonded to the bottom of the bass diaphragm. The bottom of the step of the bass frame is bonded to a bass PCB board connected to the bass voice coil by a wire. The bass voice coil is cylindrical and its bottom extends into the gap between the bass magnet and the bass T-iron.

[0008] Furthermore, the bass diaphragm has an inner folded ring and an outer folded ring. The inner folded ring is located in the center of the bass diaphragm so that the bass speaker forms the sound outlet of the tweeter. The inner folded ring is fitted into the limiting groove on the top of the bass T-iron. The outer folded ring is located on the outer edge of the bass diaphragm and is bonded to the bass frame.

[0009] Furthermore, the tweeter includes a tweeter diaphragm, a tweeter voice coil, an inner tweeter magnet, an outer tweeter magnet, a tweeter washer, and a tweeter housing. The tweeter housing is bonded to the inside of the bass T-iron. The tweeter housing encloses the tweeter diaphragm, tweeter voice coil, inner tweeter magnet, and outer tweeter magnet to form a composite body embedded in the bottom center hole of the bass T-iron. The outer tweeter magnet is bonded to the inside of the tweeter housing. The inner tweeter magnet is bonded to the center of the outer tweeter magnet. The tweeter diaphragm is bonded to the top of the outer tweeter magnet. The tweeter voice coil is bonded to the bottom of the tweeter diaphragm. The bottoms of the inner tweeter magnet and the outer tweeter magnet are bonded to the tweeter washer.

[0010] Furthermore, the tweeter also includes a tweeter PCB board connected to the tweeter voice coil via a wire, and the tweeter PCB board is mounted on the tweeter external magnet.

[0011] Furthermore, the side of the tweeter housing has an opening for mounting the tweeter PCB board on the tweeter external magnet, and a gap is left between one side of the tweeter housing and the bass T-iron for the lead wires of the tweeter PCB board to pass through.

[0012] Furthermore, the tweeter external magnet is bonded to one side of the inner side of the woofer T-iron. The outer diameter of the tweeter external magnet is the same as the outer diameter of the tweeter washer. The other side of the tweeter external magnet and the woofer T-iron have a gap for the lead wire of the tweeter PCB board to pass through. A limiting ring is provided at the top of the copper ring of the tweeter diaphragm.

[0013] Furthermore, the leads of the tweeter PCB extend outward from the gap to the woofer T-iron and tweeter washer for connection with the woofer PCB.

[0014] Compared with the prior art, the technical solution provided by this utility model has the following advantages: The woofer utilizes an external magnet design (magnetic lines between the woofer T-iron and the woofer magnet, located outside the tweeter). This maximizes the size of the central hole in the woofer T-iron, allowing the tweeter to be placed inside. The combined height of the two speakers remains the same as the height of a single woofer, achieving the performance of two speakers. This structure will completely replace existing dual-unit speakers and become the mainstream for future headphones and smart wearables. Another advantage of this structure is that the dynamic driver (woofer) uses an external magnetic circuit, allowing for a very small overall speaker size, facilitating its use in TWS or OWS Bluetooth headphones. Attached Figure Description

[0015] Figure 1 This is a top view of the assembly diagram of this utility model; Figure 2 This is an assembly drawing of the present invention from a bottom-view perspective; Figure 3This is an exploded view of the present invention without the tweeter housing; Figure 4 This is a cross-sectional view of the present invention without the tweeter housing; Figure 5 This is an exploded view of the present invention featuring a tweeter housing; Figure 6 This is a cross-sectional view of the present invention featuring a tweeter housing; Figure 7 This is a wiring diagram for the high and low frequency speakers of this utility model.

[0016] In the diagram: 1. Bass T-iron; 2. Bass magnet; 3. Bass basket; 4. Bass washer; 5. Bass voice coil; 6. Bass diaphragm; 601. Inner folding surround; 602. Outer folding surround; 7. Bass PCB board; 8. Tweeter diaphragm; 9. Tweeter voice coil; 10. Tweeter inner magnet; 11. Tweeter outer magnet; 12. Tweeter washer; 13. Tweeter PCB board; 14. Tweeter housing; 15. Limiting ring; 101. Positioning part; 102. Assembly part; 103. Outer edge; 131. Lead wire. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0019] Example 1: See Figure 1-4 An ultra-thin dual-unit speaker system includes a woofer and a tweeter. The overall shape of the woofer can be circular (as shown in this embodiment) or square. The woofer includes a woofer T-iron 1, a woofer magnet 2, and a woofer frame 3. The woofer frame 3 can be made of metal or plastic and can be an internally welded structure or an externally welded structure. The woofer frame 3 is disposed on the outside of the bottom edge of the woofer T-iron 1. The woofer magnet 2 is disposed between the woofer T-iron 1 and the woofer frame 3. The woofer magnet 2 is bonded to the top of the bottom edge of the woofer T-iron 1. The tweeter is embedded in the bottom center hole of the woofer T-iron 1. The overall shape of the tweeter can be circular (as shown in this embodiment) or square, and the sound outlet can be with or without a sound nozzle (as shown in this embodiment).

[0020] The bass T-arm 1 is integrally formed from a positioning part 101, an assembly part 102, and an outer edge part 103. The diameters of the positioning part 101, the assembly part 102, and the outer edge part 103 increase sequentially to form a stepped shape. The positioning part 101 is used for positioning the center of the bass diaphragm 6, the interior of the assembly part 102 is used to embed the tweeter, and the outer edge part 103 is used to connect and install with the bass frame 3.

[0021] Alternatively, the woofer T-arm 1 can be used as a bracket for the tweeter to fix the tweeter diaphragm 8, creating a one-piece structure. Regardless of whether it is assembled separately or as a single unit, the principle of dual-unit assembly is similar: it must be embedded into the woofer T-arm 1.

[0022] The woofer also includes a bass washer 4, a bass voice coil 5, and a bass diaphragm 6. The bass washer 4 is bonded to the top of the bass magnet 2. The bass diaphragm 6 is bonded to the top of the bass frame 3. The bass voice coil 5 is bonded to the bottom of the bass diaphragm 6. The bass PCB board 7, which is connected to the bass voice coil 5 by wires, is bonded to the bottom of the step of the bass frame 3. The bass PCB board 7 has at least 4 pads, two of which are bass speaker pads and two of which are tweeter pads. The bass PCB board 7 has at least one component for crossover, such as a capacitor or resistor.

[0023] The magnetic circuit of the woofer consists of a woofer washer 4, a woofer magnet 2, and a woofer T-iron 1. Both the woofer washer 4 and the woofer T-iron 1 are made of SPCC and other magnetically conductive materials, which play a role in magnetic conduction. Figure 4 The rectangular dashed lines in the diagram represent the magnetic field lines of the bass magnet 1 and bass magnet 2.

[0024] The bass voice coil 5 is cylindrical, with its bottom extending into the gap between the bass magnet 2 and the bass T-iron 1.

[0025] The bass diaphragm 6 has an inner folded ring 601 and an outer folded ring 602. The inner folded ring 601 is located in the center of the bass diaphragm 6, forming the sound outlet of the bass speaker. The inner folded ring 601 fits into the limiting groove at the top of the bass T-iron 1. In this embodiment, the positioning part 101 at the top of the bass T-iron 1 has an inner limiting groove. It can also be provided with an outer limiting groove like the top of the bass frame 3. In this case, the diameter of the inner folded ring 601 needs to be made slightly larger. Whether it is an inner or outer limiting groove, its function is the same, which is to limit the center of the bass diaphragm 6. The outer folded ring 602 is located at the outer edge of the bass diaphragm 6 and is bonded to the bass frame 3. In this embodiment, the top of the bass frame 3 is provided with an outer limiting groove. It can also be provided with an inner limiting groove at the top of the bass frame 3 (like the inner limiting groove). Figure 4 As shown on the top of the bass T-iron 1, whether it is the inner or outer limiting groove, their function is the same: to limit the edge of the bass diaphragm 6.

[0026] The tweeter includes a tweeter diaphragm 8, a tweeter voice coil 9, an inner tweeter magnet 10, an outer tweeter magnet 11, and a tweeter washer 12. The outer tweeter magnet 11 is bonded to one side inside the woofer T-iron 1. The inner tweeter magnet 10 is bonded to the center of the outer tweeter magnet 11. The tweeter diaphragm 8 is bonded to the top of the outer tweeter magnet 11. The tweeter voice coil 9 is bonded to the bottom of the tweeter diaphragm 8. The bottoms of the inner tweeter magnet 10 and the outer tweeter magnet 11 are bonded to the tweeter washer 12.

[0027] The outer diameter of the tweeter external magnet 11 is the same as that of the tweeter washer 12. A gap is left between the other side of the tweeter external magnet 11 and the woofer T-iron 1 for the lead wire 131 of the tweeter PCB board 13 to pass through. A limiting ring 15 is provided on the top of the copper ring of the tweeter diaphragm 8. The limiting ring 15 is embedded between the copper ring of the tweeter diaphragm 8 and the woofer T-iron 1 to limit the tweeter diaphragm 8 and keep it stable.

[0028] The tweeter also includes a tweeter PCB board 13 connected to the tweeter voice coil 9 via wires. The tweeter PCB board 13 is mounted on the tweeter external magnet 11 (which can be glued on). The lead wire 131 of the tweeter PCB board 13 extends outward from the gap between the tweeter external magnet 11 and the woofer T-iron 1, and the woofer T-iron 1 and tweeter washer 12 are used to connect with the woofer PCB board 7. The outward extension of the lead wire facilitates crossover connection with the woofer. The woofer has relatively fast high-frequency attenuation. By combining it with the tweeter through crossover, the high-frequency bandwidth of the dual unit is effectively expanded, and the sound quality of the dual unit speaker is greatly improved.

[0029] See Figure 7 The tweeter and woofer can be connected in parallel or in series, but the common connection method is parallel (as shown in this embodiment).

[0030] Example 2: See Figure 5-6 The only difference between this embodiment and embodiment 1 is that this embodiment has a tweeter housing 14 and does not have a limiting ring 15. The tweeter housing 14 encloses the tweeter diaphragm 8, tweeter voice coil 9, tweeter inner magnet 10 and tweeter outer magnet 11 to form a combination body which is embedded in the bottom center hole of the woofer T-iron 1. In this way, the tweeter is assembled separately into a finished product and then installed into the woofer T-iron 1 of the woofer. The top of the tweeter housing 14 has the tweeter's sound outlet located directly above the tweeter diaphragm 8 and directly opposite and connected to the woofer's sound outlet.

[0031] The tweeter housing 14 has an opening on its side for mounting the tweeter PCB board 13 on the tweeter external magnet 11. A gap is left between one side of the tweeter housing 14 and the woofer T-iron 1 for the lead wire 131 of the tweeter PCB board 13 to pass through. The lead wire 131 of the tweeter PCB board 13 extends outward from the gap between the tweeter housing 14 and the woofer T-iron 1 to the woofer T-iron 1 and the tweeter washer 12 for connection with the woofer PCB board 7.

[0032] It should be noted that the tweeter structure can be a moving coil structure, a planar magnetic structure, or a MEMS speaker. This does not affect the implementation of the overall solution. In all cases, the tweeter is placed inside the hole of the woofer T1.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An ultra-thin dual-unit combined loudspeaker, comprising a woofer and a tweeter, characterized in that... The woofer includes a bass T-iron (1), a bass magnet (2) and a bass frame (3). The bass frame (3) is provided on the outside of the bottom edge of the bass T-iron (1). The bass magnet (2) is provided between the bass T-iron (1) and the bass frame (3). The bass magnet (2) is bonded to the top of the bottom edge of the bass T-iron (1). The tweeter is embedded in the bottom hole of the bass T-iron (1).

2. The ultra-thin dual-element combination horn of claim 1, wherein The bass T-shaped iron (1) is integrally formed from a positioning part (101), an assembly part (102) and an outer edge part (103).

3. The ultra-thin dual-element combination horn of claim 1, wherein The woofer also includes a woofer (4), a woofer voice coil (5) and a woofer diaphragm (6). The woofer (4) is bonded to the top of the woofer magnet (2). The woofer diaphragm (6) is bonded to the top of the woofer frame (3). The woofer voice coil (5) is bonded to the bottom of the woofer diaphragm (6). The woofer PCB board (7) connected to the woofer voice coil (5) by wires is bonded to the bottom of the step of the woofer frame (3). The woofer voice coil (5) is cylindrical and extends to the gap between the woofer magnet (2) and the woofer T-iron (1).

4. The ultra-thin dual-element combination horn of claim 3, wherein The bass diaphragm (6) has an inner folded ring (601) and an outer folded ring (602). The inner folded ring (601) is located in the center of the bass diaphragm (6) so that the bass speaker forms the sound hole of the tweeter. The inner folded ring (601) is fitted into the limiting groove at the top of the bass T-iron (1). The outer folded ring (602) is located at the outer edge of the bass diaphragm (6) and is bonded to the bass frame (3).

5. The ultra-thin dual-element combination horn of claim 2, wherein The tweeter includes a tweeter diaphragm (8), a tweeter voice coil (9), a tweeter inner magnet (10), a tweeter outer magnet (11), a tweeter washer (12), and a tweeter housing (14). The tweeter housing (14) is bonded to the inside of the bass T-iron (1). The tweeter housing (14) encloses the tweeter diaphragm (8), the tweeter voice coil (9), the tweeter inner magnet (10), and the tweeter outer magnet (11) to form a composite body embedded in the bottom center hole of the bass T-iron (1). The tweeter outer magnet (11) is bonded to the inside of the tweeter housing (14). The tweeter inner magnet (10) is bonded to the center of the tweeter outer magnet (11). The tweeter diaphragm (8) is bonded to the top of the tweeter outer magnet (11). The tweeter voice coil (9) is bonded to the bottom of the tweeter diaphragm (8). The bottoms of the tweeter inner magnet (10) and the tweeter outer magnet (11) are bonded to the tweeter washer (12).

6. A super thin dual unit combined horn according to claim 5, wherein The tweeter also includes a tweeter PCB board (13) connected to the tweeter voice coil (9) via a wire, and the tweeter PCB board (13) is mounted on the tweeter external magnet (11).

7. A super thin dual unit combined horn according to claim 6, wherein The tweeter housing (14) has an opening on its side for mounting the tweeter PCB board (13) on the tweeter external magnet (11). A gap is left between one side of the tweeter housing (14) and the bass T iron (1) for the lead wire (131) of the tweeter PCB board (13) to pass through.

8. The ultra-thin dual-element combination horn of claim 6, wherein The tweeter external magnet (11) is bonded to one side of the inner side of the bass T-iron (1). The outer diameter of the tweeter external magnet (11) is the same as the outer diameter of the tweeter washer (12). The other side of the tweeter external magnet (11) and the bass T-iron (1) have a gap for the lead wire (131) of the tweeter PCB board (13) to pass through. A limiting ring (15) is provided on the top of the copper ring of the tweeter diaphragm (8).

9. A double unit combined horn of the super-thin type according to any one of claims 7-8, characterized in that Lead wire (131) extends outward from the gap to the bass T-iron (1) and tweeter washer (12) for connection to the bass PCB board (7).

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