Coaxial loudspeaker with built-in magnetic circuit structure

Abstract

The utility model discloses a coaxial loudspeaker with a built-in magnetic circuit structure, which comprises a basin frame, the basin frame is connected with U-shaped iron, a magnet is arranged in the U-shaped iron, a magnetic conductive plate is arranged above the magnet, and a low pitch voice coil and a high pitch voice coil are arranged between the magnetic conductive plate and the U-shaped iron. According to the coaxial loudspeaker with the built-in magnetic circuit structure provided by the utility model, through the organic combination of a treble vibration system and a bass vibration system, not only can the bandwidth frequency of a frequency band be broadened, but also the sound characteristic of a point sound source can be replayed in a one-point sound production and synchronous propagation manner, and meanwhile, the unit size is greatly reduced through the shared magnetic circuit and the built-in magnet system, so that the cost is reduced. And the installation and the structural design of the product are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of loudspeakers, in particular to a coaxial loudspeaker with an internal magnetic circuit structure. Background Art

[0002] The currently well-known loudspeaker consists of a magnetic circuit system, a vibration system, and a support system. Due to the constraints of the size, weight, etc. of its vibration system, it can only work in a certain narrow frequency band. To reproduce the audio in the audible range of 20 Hz - 20 KHz for the human ear, most loudspeaker systems need to use independent high-frequency, mid-frequency, or mid-bass units, or even more units combined together. Since these loudspeakers are independently installed on the panel, they cannot work at one sound source point, resulting in a time difference and phase difference in the time when the sound source signal reaches the human ear during playback, thus causing distortion, and occupying a large installation surface area, increasing the complexity of the overall structure design of the audio system. In recent years, the demand for entertainment systems in the fields of automobiles and airplanes has increased significantly, and the requirements for loudspeaker units have become higher and more complex. At the same time, higher requirements have been put forward for the installation volume and position. Currently, traditional loudspeaker units cannot better meet the increasing market demand. Content of the Utility Model

[0003] The purpose of the utility model is to provide a coaxial loudspeaker with an internal magnetic circuit structure to solve the above technical problems.

[0004] To solve the above technical problems, the utility model adopts the following technical solutions to achieve:

[0005] A coaxial loudspeaker with an internal magnetic circuit structure includes a chassis, the chassis is connected to a U-shaped iron, a magnet is placed inside the U-shaped iron, a magnetic conductive plate is arranged above the magnet, and a bass voice coil and a treble voice coil are arranged between the magnetic conductive plate and the U-shaped iron.

[0006] Preferably, the bass voice coil is connected to a bass diaphragm, and the bass diaphragm is fixed on the chassis through a surround and a spider.

[0007] Preferably, the treble voice coil is connected to a treble support and a treble loudspeaker diaphragm.

[0008] Preferably, the U-shaped iron is provided with a middle hole, and the lead of the treble voice coil passes through the treble support, the magnetic conductive plate, the magnet, and the middle hole to reach the bottom.

[0009] Preferably, the bass voice coil is adhesively fixed to the bass diaphragm.

[0010] Preferably, the treble voice coil is adhesively connected to the treble support and the treble loudspeaker diaphragm.

[0011] The beneficial effects of the utility model are:

[0012] The utility model provides a coaxial loudspeaker with an internal magnetic circuit structure. Through the organic combination of two vibration systems of high and low frequencies, the loudspeaker can not only broaden the frequency band width, but also reproduce the sound source sound characteristics with synchronous propagation of sound at one point. At the same time, the shared magnetic circuit and the built-in magnet system greatly reduce the unit size, which is more conducive to the installation and structural design of the product. Description of the Drawings

[0013] Figure 1 is a schematic structural diagram of the utility model;

[0014] Reference numerals: 1, chassis; 2, bass diaphragm; 3, middle hole; 4, high-frequency loudspeaker diaphragm; 5, bass voice coil; 6, magnetic conductive plate; 7, magnet; 8, U-shaped iron; 9, surround; 10, centering spider; 11, high-frequency voice coil; 12, high-frequency support body. Detailed Embodiments

[0015] In order to make the technical means, creative features, achieved purposes and functions of the utility model easy to understand, the following combines specific embodiments and drawings to further elaborate the utility model. However, the following embodiments are only the preferred embodiments of the utility model, not all. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0016] The following describes the specific embodiments of the utility model with reference to the drawings.

[0017] Embodiment 1

[0018] As Figure 1 shown, a coaxial loudspeaker with an internal magnetic circuit structure includes a chassis 1. The chassis 1 is connected to a U-shaped iron 8. A magnet 7 is placed inside the U-shaped iron 8. A magnetic conductive plate 6 is arranged above the magnet 7. A bass voice coil 5 and a high-frequency voice coil 11 are arranged between the magnetic conductive plate 6 and the U-shaped iron 8.

[0019] The bass voice coil 5 is adhesively fixed to the bass diaphragm 2. The bass diaphragm 2 is fixed to the chassis 1 through a surround 9 and a centering spider 10. The high-frequency voice coil 11 is adhesively connected to the high-frequency support body 12 and the high-frequency loudspeaker diaphragm 4. A middle hole 3 is arranged on the U-shaped iron 8. The lead of the high-frequency voice coil 11 passes through the high-frequency support body 12, the magnetic conductive plate 6, the magnet 7, and the middle hole 3 to reach the bottom.

[0020] By adjusting the heights of the high-frequency support body 12, the bass voice coil 5, and the high-frequency voice coil 11, the two voice coils are located at the central position within the magnetic gap formed by the magnetic conductive plate 6 and the U-shaped iron 3.

[0021] The utility model replaces the structure of magnetic conduction columns by internally superposing a magnet 7 and a magnetic conduction plate 6 through a built-in magnetic circuit, greatly reducing the space occupied by the coaxial loudspeaker and being suitable for application in a narrow space. Meanwhile, a common magnetic circuit design for the high-frequency unit and the low-frequency unit is adopted, greatly reducing the structural complexity and materials of the high-frequency unit, and realizing the reproduction of the sound of a dual-unit co-point coaxial wide frequency band within a small volume of a structure body. The structure is simple and the cost is saved.

[0022] The foregoing has shown and described the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the utility model, which are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and all such changes and improvements fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A coaxial speaker with an internal magnetic circuit structure, characterized in that: It includes a basin frame (1), the basin frame (1) is connected to a U-shaped iron (8), a magnet (7) is placed inside the U-shaped iron (8), a magnetic conduction plate (6) is arranged above the magnet (7), and a bass voice coil (5) and a treble voice coil (11) are arranged between the magnetic conduction plate (6) and the U-shaped iron (8).

2. The coaxial speaker with an internal magnetic circuit structure according to claim 1, characterized in that: The bass voice coil (5) is connected to a bass diaphragm (2), and the bass diaphragm (2) is fixed on the basin frame (1) through a surround (9) and a centering spider (10).

3. The coaxial speaker with an internal magnetic circuit structure according to claim 1, wherein: The treble voice coil (11) is connected to a treble support (12) and a treble speaker diaphragm (4).

4. The coaxial speaker with an internal magnetic circuit structure according to claim 3, characterized in that: A middle hole (3) is arranged on the U-shaped iron (8), and the lead of the treble voice coil (11) passes through the treble support (12), the magnetic conduction plate (6), the magnet (7), and the middle hole (3) to reach the bottom.

5. A coaxial speaker with an internal magnetic circuit structure according to claim 2, characterized in that: The bass voice coil (5) is adhesively fixed to the bass diaphragm (2).

6. The coaxial speaker with an internal magnetic circuit structure according to claim 3, characterized in that: The treble voice coil (11) is adhesively bonded to the treble support (12) and the treble speaker diaphragm (4).

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