A multi-purpose loudspeaker with one-piece injection molding

Abstract

This utility model discloses a multi-purpose loudspeaker with integrated injection molding, specifically relating to the field of loudspeaker technology. It includes a universal driver unit comprising a bracket, a U-cup, a magnet, pole pieces, a voice coil, a diaphragm, and a terminal block. The U-cup and bracket are manufactured using an integrated injection molding process, with a cavity at the bottom. The U-cup is embedded within a pre-set cavity inside the bracket. This utility model, by using an integrated injection molding process for the U-cup and bracket, directly embeds the U-cup into the pre-set cavity inside the bracket, eliminating the need for separate processing and fixing of the U-cup and bracket. This shortens the overall production process, reduces labor assembly costs, and ensures no obvious gaps at the joint between the U-cup and bracket. This avoids structural loosening problems caused by loose screws and uneven glue adhesion in traditional assembly, reducing the defect rate during production and improving the consistency of mass production.

Description

Technical Field

[0001] This utility model relates to the field of loudspeaker technology, and more specifically, to a multi-purpose loudspeaker that is integrally injection molded. Background Technology

[0002] In consumer electronics, smart home, and car audio industries, loudspeakers, as core sound-producing components, directly impact the user experience and market competitiveness of end products due to their performance, assembly flexibility, and production efficiency. Currently, the structure of mainstream loudspeakers in the industry typically includes core components such as a bracket, U-cup, magnet, pole piece, voice coil, diaphragm, and terminals. Each component needs to be processed individually and assembled one by one: first, the U-cup is fixed to the bracket with screws or glue to achieve the connection, then the magnet and pole piece are assembled in sequence, then the voice coil and diaphragm are glued together and installed in the preset position on the bracket, and finally the terminals are connected to complete the overall assembly. However, these components are usually used individually and cannot be adapted to different assembly structures, making them inconvenient to use. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a multi-purpose loudspeaker with one-piece injection molding, which aims to solve the problems mentioned in the background art.

[0004] This utility model provides the following technical solution: a multi-purpose loudspeaker with integrated injection molding, comprising a general-purpose unit, wherein the general-purpose unit comprises a bracket, a U-cup, a magnet, a pole piece, a voice coil, a diaphragm, and a terminal block; The U-cup and the support are manufactured using an integral injection molding process, and a cavity is provided at the bottom. The U-cup is embedded in a pre-set cavity inside the support. The magnet has a first connecting surface and a second connecting surface, the first connecting surface being glued to the inner middle of the U-cup; the pole piece has a third connecting surface, the third connecting surface being glued to the fourth connecting surface of the magnet, and a preset gap is formed between the pole piece and the inner wall of the U-cup, and a gasket ring is provided at the bottom of the magnet. The voice coil has a mating surface and two voice coil wires, including a first connecting wire and a second connecting wire. The ends of the first connecting wire and the second connecting wire are respectively provided with a first welding head and a second welding head. The mating surface of the voice coil is bonded to the contact surface of the diaphragm with adhesive. The diaphragm has a limiting surface, which is bonded to the extension platform of the bracket with adhesive. The voice coil is fitted and accommodated in the preset gap between the U-cup and the pole piece. The axis of the voice coil coincides with the axis of the magnet. The terminal block is glued to the limiting platform of the bracket. The terminal block is provided with a first contact platform, a second contact platform, a third contact platform and a fourth contact platform, wherein the first contact platform is connected to the second contact platform and the third contact platform is connected to the fourth contact platform. The voice coil wire passes through the first through hole of the bracket, and its first welding head is welded to the first contact platform; the voice coil wire passes through the second through hole of the bracket, and its second welding head is welded to the fourth contact platform; the U-cup is made of high-strength engineering plastic; the adhesive between the magnet and the U-cup, and between the pole piece and the magnet is high-temperature resistant epoxy adhesive; the adhesive between the voice coil and the diaphragm, and between the diaphragm and the bracket is flexible adhesive.

[0005] Optionally, in one possible implementation, the one-piece injection molded multi-purpose loudspeaker further includes an A-type assembly component, which includes an A-type cover, an A-type terminal wire, and an A-type silicone pad; the A-type cover is provided with an A-step, an A-type wire groove, and a first A-end and a second A-end disposed opposite to each other, and the A-step is fixedly connected to the limiting platform of the bracket by an ultrasonic welding process; The A-type terminal wire has a first end, a second end, and a contact end. The first end is welded to the second contact plate of the terminal block, and the second end is welded to the third contact plate of the terminal block. The A-type terminal wire is adapted to be inserted into the A-type wire groove. The silicone pad A has a side groove, which is respectively attached to the first A end and the second A end of the cover A. The silicone pad A is held in place by its own elasticity at the first A end and the second A end. Optionally, in one possible implementation, the one-piece injection molded multi-purpose loudspeaker further includes a B-type assembly assembly, which includes a B-type cover, a B-type terminal wire, and a B-type connector. The B-type cover is provided with a B-step and a B-line hole. The B-step is fixedly connected to the limiting platform of the bracket by ultrasonic welding process. The B-type terminal wire has a first B-end and a second B-end. The second B-end of the B-type terminal wire passes through the B-wire hole and enters the inside of the B-type cover. The first B-end is soldered to the second terminal block of the terminal board. The technical effects and advantages of this utility model are as follows: By using an integrated injection molding process to directly embed the U-cup into the pre-set cavity inside the bracket, the assembly and fixing processes after separate processing of the U-cup and bracket are eliminated, shortening the overall production process and reducing labor assembly costs. The integrated injection molding process ensures that there are no obvious gaps at the joint between the U-cup and the bracket, avoiding structural loosening problems caused by loose screws and uneven glue bonding in traditional assembly, reducing the defect rate in the production process and improving the consistency of mass production. Flexible adhesive is used between the voice coil and the diaphragm, and between the diaphragm and the support. This not only meets the connection strength requirements of the vibration system but also adapts to the high-frequency vibrations of the diaphragm and voice coil during operation. It avoids the problems of diaphragm vibration restriction or cracking caused by rigid adhesive, thus extending the service life of the vibration system and ensuring the stability of sound quality output. Attached Figure Description

[0006] To more clearly illustrate the technical solutions in this disclosure, the accompanying drawings used in some embodiments will be briefly described below. Obviously, the drawings described below are only drawings of some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings. In addition, the drawings described below can be regarded as schematic diagrams and are not intended to limit the actual size of the product, the actual flow of the method, the actual timing of the signals, etc. involved in the embodiments of this disclosure.

[0007] Figure 1 This is the main view of the overall structure of a general-purpose single unit.

[0008] Figure 2 This is a schematic diagram of the connection structure between the terminal block and the bracket.

[0009] Figure 3 This is a schematic diagram of the voice coil and voice coil line.

[0010] Figure 4 This is a schematic diagram of the mating structure between the cover (model B) and the terminal wire (model B).

[0011] Figure 5 This is a structural diagram of terminal wire type A.

[0012] Figure 6 This is a structural diagram of silicone pad type A.

[0013] Figure 7 This is a structural diagram of the cover (model A).

[0014] Figure 8 This is a schematic diagram showing the fit between terminal wire A and wire groove A.

[0015] The attached figures are labeled as follows: Support structure: 1. Support; 11. Limiting platform; 12. Cavity; 13. Extension platform; 14. First wire hole; 15. Second wire hole; 5. U-cup; 7. Magnet; 6. Electrode; 81. First connecting surface; 82. Second connecting surface; 61. Third connecting surface; 71. Washer ring; 72. Fourth connecting surface; Vibration system: 4. Voice coil; 3. Diaphragm; 41. Butt joint surface; 34. Contact surface; 32. Limiting surface; 42. First connecting wire; 43. Second connecting wire; 421. First welding head; 431. Second welding head; Wiring system: 8. Terminal block; 81. First contact platform; 82. Second contact platform; 83. Third contact platform; 84. Fourth contact platform; Type A cover and accessories: 2. Type A cover; 21. Type A step; 22. Type A cable channel; 23. First Type A end; 24. Second Type A end; Type A terminal wire and silicone pad: 9. Type A terminal wire; 91. First end; 92. Second end; 92. Contact end; 10. Type A silicone pad; 101. Side groove; Type B cover and terminal wire: 2. Type B cover; 21. Type B step; 22. Type B wire hole; 9. Type B terminal wire; 91. First Type B end; 92. Second Type B end; 93. Type B connector. Detailed Implementation

[0016] The technical aspects of this utility model will be described in detail below with reference to the accompanying drawings. This embodiment discloses a universal single-unit core structure for a multi-purpose loudspeaker that is integrally injection molded. This universal single unit is the basic functional module of the loudspeaker and can be adapted to different subsequent assembly components to meet diverse scenario requirements. Its structure and assembly process are described in detail below with reference to the accompanying drawings: The general-purpose unit includes a bracket 1, a U-cup 5, a magnet 7, a pole piece 6, a voice coil 4, a diaphragm 3, and a terminal block 8. The specific parameters and materials of each component are as follows: Support 1: It has an extension platform 13 for assembling the diaphragm on its outer side, a preset cavity for accommodating the U cup on its inner side, and a limiting platform 11, a first wire hole 14 and a second wire hole 15 integrally formed at the bottom. U-cup 5: The whole cup has a bowl-shaped structure. Its outer diameter is matched with the inner diameter of the preset cavity of the bracket 1. After being installed, it has no gap with the inner wall of the bracket 1. Magnet 7: Made of neodymium iron boron strong magnetic material, cylindrical in shape, with a first connecting surface 81 and a second connecting surface 82 facing each other; Electrode 6: It is circular, and all the third connecting surfaces 61 are provided on it; Voice coil 4: It is cylindrical in shape, with the mating surface 41 being a top annular surface. A first connecting line 42 and a second connecting line 43 are provided on its outer side, and the first welding head 421 and the second welding head 431 at the end are both tin-plated. Diaphragm 3: Contact surface 31 is an annular area at the bottom that connects with the voice coil, and limiting surface 32 is an annular area on the outside that fits against the support extension platform; Terminal block 8: The surface is provided with a first contact platform 81, a second contact platform 82, a third contact platform 83, a fourth contact platform 84, etc., wherein the first contact platform 81 and the second contact platform 82 are connected by copper foil inside the board, and the third contact platform 83 and the fourth contact platform 84 are connected by copper foil inside the board.

[0017] Specifically, a two-color injection molding machine is used to inject the modified PP raw materials of U-cup 5 and bracket 1 into the mold respectively. Through the one-piece injection molding process, U-cup 5 is directly embedded in the preset cavity of bracket 1. The injection temperature is controlled so that after molding, there is no obvious gap at the joint between U-cup 5 and bracket 1.

[0018] Apply glue to the middle of the inner side of the U-cup 5, attach the first connecting surface 81 of the magnet 7 to this position, apply a pressure of 5N and let it stand to cure. Apply the same adhesive to the second connecting surface 82 of the magnet 7, attach the third connecting surface 61 of the electrode 6 to this position, and apply pressure to cure it, so that a preset gap is formed between the electrode 6 and the inner wall of the U cup 5, and a gasket 71 is provided at the bottom of the magnet 7.

[0019] Apply flexible adhesive to the mating surface 41 of the voice coil 4, and attach the contact surface 31 of the diaphragm 3 to the mating surface; Apply the same flexible adhesive to the limiting surface 32 of the diaphragm 3 and attach it to the extension stage 13 of the bracket 1. At the same time, fit the voice coil 4 into the preset gap between the U cup 5 and the pole piece 6. Use laser positioning to calibrate the axis of the voice coil 4 to coincide with the axis of the magnet 7.

[0020] Apply glue to the limiting platform 11 of bracket 1 and attach and fix the terminal block 8. The first connecting wire 42 of the voice coil 4 is passed through the first wire hole 14 of the bracket 1, and the first welding head 421 is welded to the first contact plate 81 of the terminal block 8. The second connecting wire 43 of the voice coil is passed through the second wire hole 15 of the bracket 1, and the second welding head 431 is welded to the fourth contact platform 84.

[0021] Example 2 This embodiment adds assembly component A to the general unit of embodiment 1. Its structure and assembly process are as follows: Assembly component A includes cover A 2, terminal wire A 9, and silicone pad A 10, with the following specific configuration: Cover 2 (Type A): Made of ABS plastic, its size is compatible with the bracket 1 limiting platform 11, and it is equipped with A step 21, A wire groove 22 and the first A end 23 and the second A end 24 that are arranged opposite to each other. Type A terminal wire 9: Uses UL1007 specification wire, black and red color to distinguish positive and negative poles, with first end 91, red wire, corresponding to positive pole, second end 92, black wire, corresponding to negative pole, and contact end 92 is tin-plated. Type A silicone pad 10: Made of silicone, with a side groove 101 on the outside.

[0022] Specifically, the red wire at the first end 91 of the A-type terminal wire 9 is soldered to the second contact plate 82 of the terminal block 8, and the black wire at the second end 92 is soldered to the third contact plate 83. After soldering, the A-type terminal wire 9 is fitted and passed through the A-line groove 22 of the A-type cover 2, ensuring that the terminal wire is not bent.

[0023] Align the A-step 21 of cover A 2 with the limiting platform 11 of bracket 1, and attach the side groove 101 of silicone pad A 10 to the first A end 23 and the second A end 24 of cover A 2 respectively. Use the elasticity of the silicone pad to achieve a tight fit. The silicone pad can further enhance the dustproof and waterproof performance of the speaker, while reducing the impact of external vibration on the internal structure. Example 3 This embodiment adds assembly component B to the general unit of embodiment 1. Its structure and assembly process are as follows: The B-type assembly components include the B-type cover 2 and the B-type terminal wire 9, with the following specific settings: Type B cover 2: Made of PC plastic, it has a B step 21 and a B wire hole 22 for passing in terminal wires; Type B terminal wire 9: Uses UL1571 specification wire, with a first B terminal 91 and a second B terminal 92; Insert the second B end 92 of the B-type terminal wire 9 into the interior through the B wire hole 22 of the B-type cover 2, and then solder the first B end 91 to the second terminal block 82 of the terminal block 8.

[0024] Specifically, the B step 21 of the B cover 2 is welded and fixed to the limiting platform 11 of the bracket 1. Since the scene does not require sealing, the focus of welding is to ensure the connection strength.

[0025] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multi-purpose loudspeaker with one-piece injection molding, characterized in that, It includes a general-purpose unit, which includes a bracket (1), a U-cup (5), a magnet (7), a pole piece (6), a voice coil (4), a diaphragm (3), and a terminal block (8). The U-cup (5) and the bracket (1) are manufactured by integral injection molding process, and a cavity (12) is opened at the bottom. The U-cup (5) is embedded in the pre-set cavity inside the bracket (1). The electrode (6) has a third connecting surface (61), which is bonded to the fourth connecting surface (72) of the magnet (7) by adhesive. A preset gap is formed between the electrode (6) and the inner wall of the U cup (5), and a gasket (71) is provided at the bottom of the magnet (7). The voice coil (4) has a mating surface (41) and two voice coil wires, including a first connecting wire (42) and a second connecting wire (43). The ends of the first connecting wire (42) and the second connecting wire (43) are respectively provided with a first welding head (421) and a second welding head (431). The mating surface (41) of the voice coil (4) is glued to the contact surface (31) of the diaphragm (3). The diaphragm (3) has a limiting surface (32), which is glued to the extension platform (13) of the bracket (1). The voice coil (4) is adapted to be placed in the preset gap between the U cup (5) and the pole piece (6). The axis of the voice coil (4) coincides with the axis of the magnet (7). The terminal block (8) is glued to the limiting platform (11) of the bracket (1). The terminal block (8) is provided with a first contact platform (81), a second contact platform (82), a third contact platform (83) and a fourth contact platform (84). The first contact platform (81) is connected to the second contact platform (82), and the third contact platform (83) is connected to the fourth contact platform (84).

2. The multi-purpose loudspeaker with one-piece injection molding according to claim 1, characterized in that, The U-cup (5) is made of high-strength engineering plastic.

3. The multi-purpose loudspeaker with one-piece injection molding according to claim 1, characterized in that, The adhesive used to bond the magnet (7) to the U-cup (5) and the pole piece (6) to the magnet (7) is a high-temperature resistant epoxy adhesive; the adhesive used to bond the voice coil (4) to the diaphragm (3) and the diaphragm (3) to the bracket (1) is a flexible adhesive.

4. The multi-purpose loudspeaker with one-piece injection molding according to any one of claims 1-3, characterized in that, It also includes an A-type assembly component, which includes an A-type cover (2), an A-type terminal wire (9), and an A-type silicone pad (10); the A-type cover (2) is provided with an A-step (21), an A-line groove (22), and a first A-end (23) and a second A-end (24) arranged opposite to each other; the A-step (21) is fixedly connected to the limiting platform (11) of the bracket (1) by ultrasonic welding process; The A-type terminal wire (9) has a first end (91), a second end (92) and a contact end. The first end (91) is soldered to the second contact platform (82) of the terminal block (8), and the second end (92) is soldered to the third contact platform (83) of the terminal block (8). The A-type terminal wire (9) is adapted to be inserted into the A-type wire groove (22). The silicone pad (10) of type A is provided with a side groove (101), which is respectively attached to the first A end (23) and the second A end (24) of the cover (2) of type A. The silicone pad (10) of type A is clamped to the first A end (23) and the second A end (24) by its own elasticity.

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