CN218124922U - Inner magnetic rectangular loudspeaker - Google Patents

Abstract

The utility model provides an inner magnetic rectangular loudspeaker, which comprises a bracket, a magnetic circuit structure and a vibration structure, wherein the magnetic circuit structure and the vibration structure are fixed at the lower end of the bracket and are coaxial with the bracket; the horizontal projection of the R ring is in a long circle shape, and a plurality of reinforcing ribs are symmetrically arranged at the parts corresponding to the two straight edges of the long circle-shaped R ring; the vibrating diaphragm covers the connecting part of the pelvic cavity and the fixed frame through an R ring. The utility model discloses a loudspeaker sets up the vibrating diaphragm into the long circle form, and the magnetic field center is unified to the distance of the circular arc edge each point of vibrating diaphragm, and the vibrating diaphragm of minor axis direction sets up the strengthening rib again of rethread to the vibrating diaphragm vibration that corresponds to the minor axis direction is controlled, makes the vibration of vibrating diaphragm reach in major axis and the minor axis direction unify, eliminates the anti-resonance phenomenon, and the elimination disturbs, guarantees the tone quality of loudspeaker.

Description

Inner magnetic rectangular loudspeaker

Technical Field

The utility model relates to a speaker field, specifically speaking relates to an interior magnetic rectangle speaker.

Background

The loudspeaker is a transducer for converting an electric signal into an acoustic signal, and the quality of the loudspeaker has great influence on the sound quality. The loudspeaker is the weakest component in the audio equipment, and is the most important component for the audio effect. Loudspeakers are of a wide variety and vary widely in price. The audio frequency electric energy makes the paper cone or the diaphragm vibrate and generate resonance (resonance) with the surrounding air through electromagnetic, piezoelectric or electrostatic effect to make sound. The loudspeaker is divided into an external magnetic type and an internal magnetic type according to whether the magnet is exposed or not, the magnet between the washer and the central iron column can be seen from the outside by the external magnetic type loudspeaker, and the external magnetic type loudspeaker is generally large in size and weight and can form a strong magnetic field; the magnet of the loudspeaker of interior magnetic type is wrapped up in the shell, can't see magnet from the external world, and is small, light in weight, anti external magnetic interference ability reinforce.

The shape of the loudspeaker is generally determined by the vibrating diaphragm, the rectangular vibrating diaphragm is used for ensuring the tone quality, the voice coil is arranged at the center of the rectangular vibrating diaphragm, the long axis and the short axis are symmetrical respectively to achieve balance, but because the lengths of the long axis and the short axis are different, the vibration degrees of the electrified long axis direction and the short axis direction are different in the uniform and symmetrical magnetic field, and the anti-resonance phenomenon exists. If a rectangular magnet having a corresponding shape is used, the magnetic field distribution in the circumferential direction becomes uneven. Therefore, there is a need for an internal magnetic rectangular speaker that eliminates anti-resonance.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the disadvantages of the prior art and provide an internal magnetic rectangular loudspeaker capable of eliminating anti-resonance.

The purpose of the utility model is achieved through the following technical measures: an internal magnetic rectangular loudspeaker comprises a support, a magnetic circuit structure and a vibration structure, wherein the magnetic circuit structure and the vibration structure are fixed at the lower end of the support and are coaxial with the support; the vibrating diaphragm is positioned above the centering support piece, the lower end of the vibrating diaphragm is fixedly connected with the outer side face of the voice coil, and the joint of the lower end of the vibrating diaphragm and the voice coil is close to the upper end of the voice coil; the horizontal projection of the R ring is in a long circle shape, and a plurality of reinforcing ribs are symmetrically arranged at the parts corresponding to the two straight edges of the long circle-shaped R ring; the bracket comprises a rectangular fixed frame and a basin cavity fixedly connected with the inner frame of the fixed frame; the vibrating diaphragm covers the connecting part of the pelvic cavity and the fixed frame through an R ring.

Preferably, the lower end of the voice coil penetrates through the bottom of the pelvic cavity; the magnetic circuit structure comprises a U-shaped iron fixed on the lower end face of the pelvic cavity, a gasket, a main magnet, a washer and an auxiliary magnet, wherein the gasket, the main magnet, the washer and the auxiliary magnet are sequentially arranged in a U-shaped iron groove from bottom to top; the voice coil is established with main magnet circumference under the voice coil loudspeaker voice coil lower pot, and china department and vice magnetism are located the voice coil loudspeaker voice coil.

The main magnet and the auxiliary magnet form a strong magnetic field, so that the volume of the loudspeaker is increased, and the audio frequency range of the loudspeaker is enlarged.

Preferably, the inner edge of the basin cavity is matched with the outer edge of the R ring and the outer edge of the centering support piece respectively.

The voice coil is fixed through the centering disk matched with the pelvic cavity in shape, vibration of the voice coil in the circumferential direction is guaranteed, and the influence on tone quality caused by radial shaking of the voice coil is avoided.

Preferably, the cavity is provided with a plurality of slide block punching holes.

In order to avoid the vibration of the vibrating diaphragm, the air sealed between the vibrating diaphragm and the bracket increases extra load for the vibration structure, and the sliding rail is arranged to punch a hole, so that the additional load can be prevented from influencing the tone quality of the loudspeaker.

Preferably, the upper end of the voice coil is covered with a dust cap.

The dustproof cap can prevent metal chips and dust from entering the magnetic air gap, and meanwhile, the rigidity of the joint part of the voice coil and the vibrating diaphragm is increased, and the high-frequency characteristic of the loudspeaker is improved.

Preferably, the outer surface of the cavity is provided with a terminal.

Compared with the loudspeaker structure of the prior art, the utility model discloses a loudspeaker sets up the vibrating diaphragm into the long circle form, and the major axis direction is the circular arc, and magnetic field center is unified to the distance of the circular arc edge each point of vibrating diaphragm, and the vibrating diaphragm of minor axis direction sets up the strengthening rib again to the rethread to control the vibrating diaphragm vibration that the minor axis direction corresponds, make the major axis and minor axis direction go up the vibration of vibrating diaphragm and reach unifiedly, eliminate the anti-resonance phenomenon, the interference elimination guarantees the tone quality of loudspeaker.

Drawings

Fig. 1 is a schematic structural diagram of an internal magnetic rectangular speaker according to an embodiment.

Fig. 2 is an exploded view of fig. 1.

Wherein: 10. a voice coil; 20. a centering disk; 30. vibrating diaphragm; 401. an R ring; 402. reinforcing ribs; 501. fixing the frame; 502. a pelvic cavity; 5021. punching a sliding rail; 601. iron U; 602. a gasket; 603. main magnetism; 604. washer; 605. secondary magnetism; 70. a dust cap; 80. and a terminal.

Detailed Description

Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 and 2, the present embodiment provides an internal magnetic rectangular speaker, which includes a support, a magnetic circuit structure and a vibration structure, the magnetic circuit structure and the vibration structure are fixed at a lower end of the support and are coaxial with the support, the vibration structure includes a voice coil 10 sleeved on the magnetic circuit structure, a centering support 20 sleeved with the voice coil 10, a vibrating diaphragm 30 sleeved on the voice coil 10, and an R ring 401 having an inner edge fixedly connected to an upper end of the vibrating diaphragm 30; the vibrating diaphragm 30 is positioned above the centering support 20, the lower end of the vibrating diaphragm 30 is fixedly connected with the outer side surface of the voice coil 10, and the joint of the lower end of the vibrating diaphragm 30 and the voice coil 10 is close to the upper end of the voice coil 10; the horizontal projection of the R ring 401 is in a long circle shape, and a plurality of reinforcing ribs 402 are symmetrically arranged at the corresponding parts of two straight edges of the long circle R ring 401; the support comprises a rectangular fixed frame 501 and a basin cavity 502 fixedly connected with the inner frame of the fixed frame 501; the diaphragm 30 is covered at the joint of the basin cavity 502 and the fixed frame 501 through the R ring 401. The lower end of the voice coil 10 penetrates through the bottom of the cavity 502; the magnetic circuit structure comprises a U-shaped iron 601 fixed on the lower end face of the basin cavity 502, a gasket 602, a main magnet 603, a washer 604 and an auxiliary magnet 605 which are arranged in a U-shaped iron 601 groove from bottom to top in sequence; the lower end of the voice coil 10 is sleeved with the main magnet 603, and the washer 604 and the auxiliary magnet 605 are located in the voice coil 10.

The working principle is as follows: in a permanent magnetic field formed by the U-shaped iron 601, the spacer 602, the main magnet 603, the washer 604 and the auxiliary magnet 605, which are sequentially arranged in the U-shaped iron 601 from bottom to top, an alternating current is input to the voice coil 10 to generate an alternating magnetic field, the voice coil 10 drives the diaphragm 3040 to move in a direction perpendicular to the current direction of the voice coil 1020, that is, the voice coil 10 drives the diaphragm 3040 to vibrate back and forth along the axial direction, and the vibration of the diaphragm 30 pushes the air to vibrate, so as to make a sound.

The number and material of the reinforcing ribs 402 are adjusted according to the material of the diaphragm 30 and the length of the major and minor axes.

The inner edge of the basin 502 matches the outer edge of the R-ring 401 and the outer edge of the centering leg 20, respectively. The voice coil 10 is fixed through the centering support piece 20 with the shape matched with the cavity 502, so that the vibration of the voice coil 10 in the circumferential direction is ensured, and the influence of the radial vibration of the voice coil 10 on the tone quality is avoided.

The basin 502 has a plurality of sliding rail punching holes 5021. In order to prevent the air enclosed between the diaphragm 30 and the bracket from adding an extra load to the vibrating structure when the diaphragm 30 vibrates, the sliding rail punching hole 5021 is arranged, so that the extra load can be prevented from influencing the tone quality of the loudspeaker.

The upper end of the voice coil 10 is covered with a dust cap 70. The dust cap 70 prevents metal chips and dust from entering the magnetic air gap, and increases the rigidity of the joint between the voice coil 10 and the diaphragm 30, thereby improving the high-frequency characteristics of the speaker.

For convenient wiring, the outer surface of the basin cavity 502 is provided with a terminal 80.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (6)

1. An internal magnetic rectangular loudspeaker comprises a support, a magnetic circuit structure and a vibration structure, wherein the magnetic circuit structure and the vibration structure are fixed at the lower end of the support and are coaxial with the support; the vibrating diaphragm is positioned above the centering support piece, the lower end of the vibrating diaphragm is fixedly connected with the outer side surface of the voice coil, and the joint of the lower end of the vibrating diaphragm and the voice coil is close to the upper end of the voice coil; the horizontal projection of the R ring is in a long circle shape, and a plurality of reinforcing ribs are symmetrically arranged at the parts corresponding to the two straight edges of the long circle-shaped R ring; the bracket comprises a rectangular fixed frame and a basin cavity fixedly connected with the inner frame of the fixed frame; the vibrating diaphragm covers the connecting part of the pelvic cavity and the fixed frame through the R ring.

2. The internal magnetic rectangular loudspeaker according to claim 1, wherein the lower end of the voice coil penetrates through the bottom of the cavity; the magnetic circuit structure comprises a U-shaped iron fixed on the lower end face of the pelvic cavity, a gasket, a main magnet, a washer and an auxiliary magnet, wherein the gasket, the main magnet, the washer and the auxiliary magnet are sequentially arranged in the U-shaped iron groove from bottom to top; the lower end of the voice coil is sleeved with the main magnet in the circumferential direction, and the washer and the auxiliary magnet are located in the voice coil.

3. The internal magnetic rectangular speaker according to claim 2, wherein the inner edge of the basin cavity matches the outer edge of the R-ring and the outer edge of the centering leg, respectively.

4. The internal magnetic rectangular speaker according to claim 2, wherein said cabinet is provided with a plurality of slide-stop punch holes.

5. The internal magnetic rectangular speaker according to claim 2, wherein a dust cap is closed on the upper end cover of the voice coil.

6. The internal magnetic rectangular speaker according to claim 2, wherein the external surface of said cavity is provided with a terminal.

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