Loudspeaker with double-magnetic structure

Abstract

The utility model provides a loudspeaker with a double-magnetic structure, which comprises a loudspeaker, and the loudspeaker comprises a bracket, and a vibrating diaphragm, a first pole piece, a first magnet, T-shaped iron, a gasket, a PCB (Printed Circuit Board), a sealing piece and tuning paper which are sequentially stacked and arranged in the bracket, a second magnet and a second pole piece are laminated in the T-shaped iron; a first cavity is formed between the outer side of the lower part of the T-shaped iron and the outer sides of the first magnet and the first pole piece; a second cavity is formed in the centers of the T-shaped iron, the second magnet and the second pole piece; the vibrating diaphragm is provided with a coil, and the coil extends to the first cavity. According to the utility model, the magnetic flux is enhanced under the double-magnetic-circuit and double-cavity structure, the sensitivity is improved, and the details and dynamic states of sound can be better restored in practical application. All parts in the support are designed to be of a stacked structure, manual assembly can be achieved, assembly is faster, batch production is facilitated, the productivity is improved, and the reject ratio is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, and more particularly to a loudspeaker with a dual-magnetic structure. Background Art

[0002] With the advancement of audio technology, the demand for speaker sound quality and performance is increasing. Traditional speakers typically utilize a single magnetic circuit and single cavity structure, which presents limitations in terms of audio reproduction, frequency response, and dynamic range. This single magnetic circuit design results in insufficient magnetic flux, which affects the speaker's sensitivity and bandwidth, particularly in the high-frequency range. Furthermore, the structural design of traditional speakers is often complex, making them difficult to assemble during production, resulting in low production efficiency and increased defect rates. Utility Model Content

[0003] In view of this, the present invention provides a speaker with a dual magnetic structure.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A speaker with a dual magnetic structure includes a speaker, the speaker including a bracket and a diaphragm, a first pole piece, a first magnet, a T-shaped iron, a gasket, a PCB board, a sealing sheet, and tuning paper stacked in sequence within the bracket; a second magnet and a second pole piece are stacked in the T-shaped iron; a first cavity is formed between the outer side of the lower portion of the T-shaped iron and the outer side of the first magnet and the first pole piece, and a second cavity is formed in the center of the T-shaped iron, the second magnet, and the second pole piece; a coil is provided on the diaphragm, and the coil extends toward the first cavity.

[0006] In the preferred technical solution, the T-shaped iron is provided with a mounting groove matching the second magnet and the second pole piece, the second magnet and the second pole piece are stacked and installed in the mounting groove, and the bottom of the mounting groove and the center of the second magnet and the second pole piece are formed with mutually matching through holes so that the second cavity is formed after combination.

[0007] In the preferred technical solution, the T-shaped iron has a "T"-shaped structure, the first pole piece and the first magnet have a ring-shaped structure, and the first pole piece and the first magnet are sleeved on the outer side of the lower part of the T-shaped iron so that the outer side of the lower part of the T-shaped iron and the inner side of the first pole piece and the first magnet form a first cavity.

[0008] In a preferred technical solution, a sound-permeable hole corresponding to the diaphragm is provided at the center of the bottom of the bracket.

[0009] In a preferred technical solution, the first magnet and the second magnet are at the same horizontal position, the first magnet is sleeved on the outer side of the lower part of the T-shaped iron, and the second magnet is embedded on the inner side of the lower part of the T-shaped iron.

[0010] In a preferred technical solution, one end of the coil is connected to the diaphragm, and the other end extends into the first cavity. The inner and outer sides of the coil correspond to the second magnet and the first magnet respectively.

[0011] In the preferred technical solution, the entire diaphragm is made of environmentally friendly materials, the hanging edge provided on the diaphragm is made of degradable foam material, and the cylinder provided on the diaphragm is made of ultra-thin paper formed of environmentally friendly bamboo fiber.

[0012] It can be seen from the above technical solutions that, compared with the prior art, the present invention has the following beneficial technical effects:

[0013] This utility model employs a first magnet and a second magnet, which, in conjunction with the first and second cavities, form a dual-magnet, dual-cavity structure. This enhances magnetic flux, thereby increasing the speaker's frequency and bandwidth. Unlike conventional single-magnetic-circuit, single-cavity speakers, this dual-magnetic-circuit, dual-cavity structure enhances magnetic flux, while also improving sensitivity and extending the bandwidth to 30kHz. This design can better reproduce the details and dynamics of sound in practical applications. The components of the bracket utilize a laminated design, allowing for manual assembly and faster assembly, facilitating mass production, increasing production capacity, and reducing defect rates. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0015] Figure 1 It is a schematic diagram of the cross-sectional structure of the present utility model.

[0016] Figure 2 This is a schematic diagram of the exploded structure of the present invention.

[0017] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model.

[0018] Figure numbers: 100, speaker; 110, bracket; 120, diaphragm; 130, first pole piece; 140, first magnet; 150, T-shaped iron; 160, gasket; 170, PCB board; 180, sealing sheet; 190, tuning paper; 151, first magnet; 152, second pole piece; 153, mounting groove; 111, sound-permeable hole; 101, first cavity; 102, second cavity; 121, coil. DETAILED DESCRIPTION

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, which are simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner.

[0020] In the description of this application, it should be understood that the terms "longitudinal", "radial", "length", "width", "thickness", "up", "down", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended only to facilitate the description of this application and simplify the description. They do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting this application. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0022] A speaker with a dual magnetic structure, see Figure 1-3 , including a speaker 100, the speaker 100 includes a bracket 110, the bracket 110 is a basin-shaped structure, and an installation cavity is formed inside for various components to be installed in the bracket 110. As shown in the figure, the speaker 100 is displayed as a downward sound-emitting structure. The bracket 110 is sequentially installed with a diaphragm 120, a first pole piece 130, a first magnet 140, a T-shaped iron 150, a gasket 160, a PCB board 170, a sealing sheet 180, and a tuning paper 190 from top to bottom, wherein the PCB board 170 and the tuning paper 190 protrude from the top of the bracket 110; a second magnet 151 and a second pole piece 152 are stacked in the T-shaped iron 150. It can be seen from the cross-sectional view that the various components in the bracket 110 are assembled in a stacked or nested structure, which can be manually assembled, which is convenient for processing personnel to assemble, and the assembly is faster, which can improve production efficiency; and the installation method of the stacked structure can reduce the defective rate in processing and production.

[0023] Furthermore, the T-shaped iron 150 is a "T"-shaped structure, with a circular ring structure at the top and a columnar structure extending downward at the bottom. The first magnet 140 and the first pole piece 150 are mounted on the bottom of the T-shaped iron 150. A first cavity 101 is formed between the first magnet 140, the first pole piece 150 and the bottom of the T-shaped iron 150. A second cavity 102 is formed in the center of the T-shaped iron 150, the second magnet 151 and the second pole piece 152. A coil 121 is provided on the diaphragm 120, and the coil 121 extends toward the first cavity 101. The utility model forms a dual-magnetic dual-cavity structure for the speaker 100 by arranging the first magnet 140, the second magnet 151, the second cavity 102 and the second magnet 151, which can enhance the magnetic flux, frequency and bandwidth. Different from the traditional speaker structure with a single magnetic circuit and a single cavity, a dual magnetic circuit and a dual cavity are used. The magnetic flux is enhanced under the dual magnetic circuit and dual cavity structure, while the sensitivity is improved and the bandwidth is extended to 30KHz, which can better restore the details and dynamics of the sound in practical applications.

[0024] Furthermore, the T-shaped iron 150 is provided with a mounting groove 153 that matches the second magnet 151 and the second pole piece 152. The second magnet 151 and the second pole piece 152 are stacked and installed in the mounting groove 153. The bottom of the mounting groove 153 and the center of the second magnet 151 and the second pole piece 152 are formed with matching through holes so that the second cavity 102 is formed after the combination. The structure of the mounting groove 153 facilitates the installation of the second magnet 151 and the second pole piece 152 and ensures the stability of the installation. The first pole piece 130 and the first magnet 140 are annular structures. The first pole piece 130 and the first magnet 140 are mounted on the outside of the lower portion of the T-shaped iron 150, so that the outside of the lower portion of the T-shaped iron 150 and the inside of the first pole piece 130 and the first magnet 140 form the first cavity 101. The first magnet 140 and the second magnet 150 are located at the same horizontal position. The first magnet 140 is mounted on the outer side of the lower portion of the T-shaped iron 150, while the second magnet 151 is embedded in the inner side of the lower portion of the T-shaped iron 150. The bottom end of the coil 121 is connected to the diaphragm 120 and extends upward into the first cavity 101. The inner and outer sides of the coil 121 correspond to the second magnet 151 and the first magnet 140, respectively. The first magnet 140 and the second magnet 151 are fixed in the bracket 110 to form a more stable magnetic field. A stronger magnetic flux is formed in the first cavity 101 and the second cavity 102. When the coil 121 is energized, the magnetic field interacts with the magnetic fields of the two magnets. The stronger magnetic flux causes the coil 121 to move up and down under the action of the magnetic field, thereby driving the diaphragm 120 to vibrate and produce sound, thereby enhancing the sound frequency and bandwidth of the speaker 100. The first pole piece 130 is located below the first magnet 140, and the second pole piece 152 is located above the second magnet 151. The two pole pieces are made of high magnetic permeability materials to enhance the concentration of the magnetic field. The magnetic field generated by the two magnets forms a closed magnetic circuit through the two pole pieces, ensuring that the magnetic field is concentrated and efficiently acts on the coil 121 located therebetween. When current passes through the coil 121, movement is generated in the magnetic field with higher magnetic flux, thereby driving the diaphragm 120 to make sound.

[0025] Furthermore, a sound-transmitting hole 111 is located at the center of the bottom of the bracket 110, corresponding to the diaphragm 120. The bracket 110 wraps around the diaphragm 120 to prevent damage, while the sound-transmitting hole 111 ensures that the diaphragm 120 can transmit sound outward when vibrating. The diaphragm 120 is entirely made of environmentally friendly materials, with a suspension edge made of biodegradable foam and a barrel made of ultra-thin paper molded from environmentally friendly bamboo fiber, making the speaker 110 safer and more powerful. The gasket 160 is located above the T-shaped iron 150. The gasket 160 is provided with a sealing piece 180. The sealing piece 180 is provided with a tuning paper 190. The PCB board 170 is a ring structure. The PCB board 170 is installed on the gasket 170. The sealing piece 180 and the tuning paper 190 are located on the inner side of the PCB board 170. The ring-shaped structure of the PCB board 170 is convenient for installation and cooperates with the structure of the sealing piece 180 and the tuning paper 190 to make the overall structure of the speaker 100 more reasonable.

[0026] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A speaker with a dual magnetic structure, comprising a speaker (100), characterized in that: The speaker (100) comprises a bracket (110) and a diaphragm (120), a first pole piece (130), a first magnet (140), a T-shaped iron (150), a gasket (160), a PCB board (170), a sealing sheet (180), and a tuning paper (190) which are sequentially stacked in a layered structure in the bracket (110); a second magnet (151) and a second pole piece (152) are stacked in the T-shaped iron (150); a first cavity (101) is formed between the outer side of the lower part of the T-shaped iron (150) and the outer sides of the first magnet (140) and the first pole piece (130); a second cavity (102) is formed in the center of the T-shaped iron (150), the second magnet (151), and the second pole piece (152); a coil (121) is provided on the diaphragm (120), and the coil (121) extends toward the first cavity (101).

2. The speaker with a dual magnetic structure according to claim 1, characterized in that: The T-shaped iron (150) is provided with a mounting groove (153) matching the second magnet (151) and the second pole piece (152); the second magnet (151) and the second pole piece (152) are stacked and mounted in the mounting groove (153); the bottom of the mounting groove (153) and the center of the second magnet (151) and the second pole piece (152) are formed with mutually matching through holes so that the second cavity (102) is formed after the combination.

3. The speaker with a dual magnetic structure according to claim 1, characterized in that: The T-shaped iron (150) is in a T-shaped structure, the first pole piece (130) and the first magnet (140) are in an annular structure, and the first pole piece (130) and the first magnet (140) are sleeved on the outer side of the lower part of the T-shaped iron (150), so that the outer side of the lower part of the T-shaped iron (150) and the inner side of the first pole piece (130) and the first magnet (140) form a first cavity (101).

4. The speaker with a dual magnetic structure according to claim 1, characterized in that: A sound-permeable hole (111) corresponding to the diaphragm (120) is provided at the center of the bottom of the bracket (110).

5. The speaker with a dual magnetic structure according to claim 1, characterized in that: The first magnet (140) and the second magnet (151) are at the same horizontal position. The first magnet (140) is sleeved on the outer side of the lower part of the T-shaped iron (150), and the second magnet (151) is embedded in the inner side of the lower part of the T-shaped iron (150).

6. The speaker with a dual magnetic structure according to claim 1, characterized in that: One end of the coil (121) is connected to the diaphragm (120), and the other end extends into the first cavity (101). The inner and outer sides of the coil (121) correspond to the second magnet (151) and the first magnet (140) respectively.

7. The speaker with a dual magnetic structure according to claim 1, characterized in that: The diaphragm (120) is made of environmentally friendly materials as a whole, the hanging edge provided on the diaphragm (120) is made of degradable foam material, and the cylinder provided on the diaphragm (120) is made of ultra-thin paper formed of environmentally friendly bamboo fiber.

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