CN218634166U - External magnetic loudspeaker - Google Patents

Abstract

The utility model provides an external magnetic loudspeaker, the vibration structure comprises a voice coil which is sleeved on the magnetic circuit structure, a centering support piece which is sleeved on the voice coil, a vibrating diaphragm which is sleeved on the voice coil, and an R ring of which the inner edge is fixedly connected with the upper end of the vibrating diaphragm; 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 vibrating diaphragm covers the upper end of the bracket; the magnetic circuit structure comprises a T iron, a magnet sleeved on the T iron and a washer sleeved on the T iron, wherein the washer is positioned above the magnet; the upper end of the T iron penetrates through the middle part of the lower end of the support, the lower end of the voice coil is sleeved on the T iron, and the voice coil is positioned in the basin frame; the washer upper surface is equipped with the lug, and the support bottom corresponds the mounting hole of seting up and matcing with the lug. The utility model discloses a speaker avoids the china department and takes place the rotation of circumference with the vibrating diaphragm of installing on the support and leads to the dislocation, guarantees the china department and aims at with the vibrating diaphragm, guarantees the tone quality of speaker.

Description

External magnetic loudspeaker

Technical Field

The utility model relates to a speaker field, specifically speaking relates to an outer magnetism speaker.

Background

A speaker commonly known as a horn (also known as Loudspeakers) is an electro-acoustic device that converts electrical signals into acoustic signals. Specifically, the speaker operates by transducing a range of audio electrical power signals into audible sound with low distortion and sufficient sound pressure level.

When the audio current passes through the voice coil in the annular magnetic gap, an alternating magnetic field which changes along with the audio signal is generated on the voice coil, and the alternating magnetic field interacts with a surrounding fixed magnetic field, so that the voice coil drives the vibrating diaphragm to generate radial vibration to make sound. For example, utility model No. 2014203638043 discloses a speaker, wherein magnetic conduction portion is the T iron, magnet and china department are the loop configuration, china department sets up around the T iron, china department generally glues with magnet, this kind of china department mode of setting up, and at the speaker in-process, china department produces the rotation easily, is difficult to guarantee the alignment of china department, magnet and vibrating diaphragm, especially in non-circular speaker, the misalignment of non-circular china department, magnet and vibrating diaphragm takes place the dislocation, seriously influences the tone quality of speaker. Therefore, an external magnetic speaker in which the washer is not easily dislocated is highly desired.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the weak point of above-mentioned conventional art, provide an outer magnetism speaker that china department is difficult for misplacing.

The purpose of the utility model is achieved through the following technical measures: an external magnetic 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 vibrating diaphragm covers the upper end of the bracket; the magnetic circuit structure comprises a T iron, a magnet sleeved on the T iron and a washer sleeved on the T iron, wherein the washer is positioned above the magnet; the upper end of the T iron penetrates through the middle part of the lower end of the support, the lower end of the voice coil is sleeved on the T iron, and the voice coil is positioned in the support; the washer upper surface is equipped with the lug, and the support bottom corresponds the mounting hole of seting up and matcing with the lug.

Preferably, the support includes that fixed frame and upper end are fixed in the basin frame of fixed frame inward flange, and the vibrating diaphragm is installed in fixed frame upper surface, and the mounting hole is seted up in basin frame bottom.

Preferably, the number of the convex blocks is at least three, and the convex blocks are distributed on the circumferential direction of the T iron penetrating through the washer at equal angles.

Preferably, the upper end of the vibrating diaphragm is oblong, and the shapes of the magnet, the upper end of the basin frame and the washer are matched with the shape of the upper end of the vibrating diaphragm.

Preferably, the bottom of the T-iron corresponds to the shape of the magnet.

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

Preferably, the side surface of the basin frame is provided with a plurality of sliding block punching holes.

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

Preferably, the straight edge of the diaphragm is provided with a reinforcing rib.

Compared with the loudspeaker structure of the prior art, the utility model discloses a loudspeaker sets up the lug at the magnificent department upper surface, through the assembly of lug and mounting hole, magnificent department and T iron to realize T iron, magnet and the relatively fixed of magnificent department on the support, avoid the magnificent department and install the vibrating diaphragm on the support and take place the rotation of circumference and lead to the dislocation, guarantee the magnificent department and aim at with the vibrating diaphragm, guarantee the tone quality of loudspeaker.

Drawings

Fig. 1 is a schematic structural view of an external magnetic speaker according to an embodiment.

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

Wherein: 101. a voice coil; 102. a centering support; 103. vibrating diaphragm; 104. an R ring; 201. t iron; 202. a magnet; 203. Washer; 301. a fixing frame; 302. a basin stand; 3021. mounting holes; 3022. punching a sliding block; 40. a terminal; 50. a dust cap.

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 drawings are exemplary only for the purpose of 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 external magnetic speaker, which includes a support, a magnetic circuit structure and a vibration structure, wherein the magnetic circuit structure and the vibration structure are fixed at a lower end of the support and are coaxial with the support, and the vibration structure includes a voice coil 101 sleeved on the magnetic circuit structure, a centering support 102 sleeved on the voice coil 101, a vibrating diaphragm 103 sleeved on the voice coil 101, and an R-ring 104 whose inner edge is fixedly connected with an upper end of the vibrating diaphragm 103; the vibrating diaphragm 103 is positioned above the centering support 102, the lower end of the vibrating diaphragm 103 is fixedly connected with the outer side surface of the voice coil 101, and the joint of the lower end of the vibrating diaphragm 103 and the voice coil 101 is close to the upper end of the voice coil 101; the vibrating diaphragm 103 covers the upper end of the bracket; the magnetic circuit structure comprises a T iron 201, a magnet 202 sleeved on the T iron 201 and a washer 203 sleeved on the T iron 201, wherein the washer 203 is positioned above the magnet 202; the upper end of the T iron 201 penetrates through the middle of the lower end of the support, the lower end of the voice coil 101 is sleeved on the T iron 201, and the voice coil 101 is located inside the support; the upper surface of the washer 203 is provided with a convex block, and the bottom of the bracket is correspondingly provided with a mounting hole 3021 matched with the convex block.

The working principle is as follows: in a permanent magnetic field formed by a magnetic circuit structure consisting of the T iron 201, the magnet 202 and the washer 203, an alternating magnetic field is generated by the voice coil 101 when an alternating current is input, the voice coil 101 drives the diaphragm 103 to move in a direction perpendicular to the current direction of the voice coil 101, namely, the voice coil 101 drives the diaphragm 103 to vibrate back and forth along the axial direction, and the vibration of the diaphragm 103 pushes the air to vibrate, so that sound is produced. In the vibration process, take place to come unstuck between china department 203 and the T iron 201, china department 203 takes place the rotation of circumference under the vibration, and china department 203 drives magnet 202, leads to magnet 202, china department 203 and vibrating diaphragm 103 dislocation, and the vibration range of the different positions of vibrating diaphragm 103 is inconsistent, and the anti-resonance influence tone quality of production, through the gomphosis at the lug of mounting hole 3021, avoids china department 203 and support to take place the skew of circumference, guarantees the tone quality of speaker.

In order to facilitate the installation of the diaphragm 103, the bracket includes a fixing frame 301 and a basin frame 302 having an upper end fixed to an inner edge of the fixing frame 301, the diaphragm 103 is installed on an upper surface of the fixing frame 301, and a mounting hole 3021 is opened at a bottom of the basin frame 302.

In order to ensure the connection reliability of the washer 203 and the basin frame 302, four bumps are arranged, and the bumps are distributed on the T iron 201 at equal angles in the circumferential direction where the washer 203 penetrates.

The sound volume of the loudspeaker is improved by increasing the generating area of the vibrating diaphragm 103, the upper end of the vibrating diaphragm 103 is in an oblong shape, and the shapes of the magnet 202, the upper end of the basin frame 302 and the washer 203 are matched with the shape of the upper end of the vibrating diaphragm 103.

The bottom of the T-iron 201 corresponds to the shape of the magnet 202.

To facilitate wiring, the frame 302 has terminals 40 on its outer surface.

The side of the basin frame 302 is provided with a plurality of slide bar punching holes 3022. In order to avoid that the air enclosed between the diaphragm 103 and the frame adds an extra load to the vibrating structure when the diaphragm 103 vibrates, the extra load can be prevented from affecting the sound quality of the loudspeaker by providing the slide punch 3022.

The upper end of the voice coil 101 is covered with a dust cap 50. The dust cap 50 prevents metal dust and dust from entering the magnetic air gap, and increases the rigidity of the joint between the voice coil 101 and the diaphragm 103, thereby improving the high-frequency characteristics of the speaker.

The straight edge of the diaphragm 103 is provided with a stiffener. The straight edge part of the diaphragm 103 is provided with a reinforcing rib, so that the vibration of the diaphragm 103 corresponding to the short axis direction is controlled, the vibration of the diaphragm 103 in the long axis direction and the short axis direction is unified, the anti-resonance phenomenon is eliminated, the interference is eliminated, and the tone quality of the loudspeaker is ensured.

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 (9)

1. An external magnetic 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 vibrating diaphragm covers the upper end of the bracket; the magnetic circuit structure comprises a T iron, a magnet sleeved on the T iron and a washer sleeved on the T iron, wherein the washer is positioned above the magnet; the upper end of the T iron penetrates through the middle of the lower end of the support, the lower end of the voice coil is sleeved on the T iron, and the voice coil is located inside the support; the washer is characterized in that a convex block is arranged on the upper surface of the washer, and a mounting hole matched with the convex block is correspondingly formed in the bottom of the support.

2. The external magnetic speaker as claimed in claim 1, wherein the supporter comprises a fixed frame and a frame having an upper end fixed to an inner edge of the fixed frame, the diaphragm is mounted on an upper surface of the fixed frame, and the mounting hole is opened at a bottom of the frame.

3. An external magnetic loudspeaker according to claim 2, wherein there are at least three said projections, each said projection being equiangularly distributed around the circumference of the T-iron where it passes through the washer.

4. An external magnetic loudspeaker according to claim 3, wherein the upper end of the diaphragm is oblong, and the shape of the magnet, the upper end of the frame, and the washer match the shape of the upper end of the diaphragm.

5. An external magnetic loudspeaker according to claim 4, wherein the bottom of the T-iron corresponds to the shape of the magnet.

6. An external magnetic loudspeaker according to claim 2, wherein the frame has terminals on its outer surface.

7. An external magnetic loudspeaker according to claim 2, wherein the frame side is perforated with a plurality of slide stops.

8. An external magnetic loudspeaker according to claim 1, wherein said voice coil upper end cap is fitted with a dust cap.

9. An external magnetic loudspeaker according to claim 3, wherein the diaphragm is provided with stiffening ribs at the straight sides.

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