CN2220710Y

CN2220710Y - Radial magnet loudspeaker of radial magnetic field

Info

Publication number: CN2220710Y
Application number: CN 94246065
Authority: CN
Inventors: 陈正宗; 岑人经
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-12-02
Filing date: 1994-12-02
Publication date: 1996-02-21
Anticipated expiration: 2004-12-02

Abstract

The utility model relates to a radial magnet loudspeaker of radial magnetic field direction, which is composed of a dust cover, a vibrating diaphragm, a non-magnetism conduction basin frame, a permanent magnet, a piece of peripheral magnetism conducting soft iron, a piece of central magnetism conducting soft iron, a voice coil, a ripple positioning bracket and a pressing ring which are bonded, welded and connected together, wherein, the dust cover is connected with the vibrating diaphragm, the elastic side of the vibrating diaphragm is connected with the non-magnetism conduction basin frame, and the non-magnetism conduction basin frame is connected with the permanent magnet and the peripheral magnetism conducting soft iron; the permanent magnet is connected with the non-magnetism conduction basin frame and the peripheral magnetism conducting soft iron or the permanent magnet is connected with the central magnetism conducting soft iron, the voice coil is positioned in the center of a magnetic gap and is connected with the ripple positioning bracket and the vibrating diaphragm, and the pressing ring is connected with the elastic side of the vibrating diaphragm and the non-magnetism conduction basin frame. The magnetic field of the utility model directly acts on the voice coil, and the utility model has the advantages of high sensitivity, simple structure, small volume and no magnetic leakage.

Description

A kind of radial magnet loud speaker of radial magnetic field orientation

The utility model is a kind of radial magnet loud speaker of radial magnetic field orientation, belongs to the electroacoustic techniques field.

Existing loud speaker kind is a lot, and electromagnetic type, moving-coil type, piezoelectric type, electrostatic etc. are arranged, and what use the most extensively is coil-moving speaker.But commercially available coil-moving speaker exists following problem and shortcoming: 1. because the permanent magnet of existing coil-moving speaker all is axial magnet of axial charging, its magnetic field can not directly act on voice coil loudspeaker voice coil, and need just can act on voice coil loudspeaker voice coil through the magnetic conductor guiding, make that the magnetic field intensity at voice coil loudspeaker voice coil place weakens, the sensitivity of loud speaker is lower; 2. owing to be the axial magnet loud speaker, loud speaker has leakage field outward; 3. structure is relatively complicated, and volume is bigger.

The purpose of this utility model is exactly can not directly act on voice coil loudspeaker voice coil for the axial magnet magnetic field that overcomes existing coil-moving speaker existence, the voice coil loudspeaker voice coil magnetic field intensity is weakened, the sensitivity of loud speaker is lower, and loud speaker has shortcomings such as leakage field, volume be bigger outward, designs the radial magnet loud speaker that a kind of magnetic field energy directly acts on the radial magnetic field orientation of voice coil loudspeaker voice coil, highly sensitive, magnetic leakage free.

The utility model is realized by following structure technology scheme: the structural representation of the radial magnet loud speaker of radial magnetic field orientation is respectively as Fig. 1, shown in Figure 3.It is by dust cover 1, vibrating diaphragm 2, non-magnetic conduction basin frame 3, permanent magnet 4, peripheral magnetic conductive soft iron 5, center magnetic conductive soft iron 6, voice coil loudspeaker voice coil 7, ripple locating support 8, pressure ring 9 bonds jointly, be welded to connect formation, its interconnected relationship is:

dust cover

1 and 2 bonding connections of vibrating diaphragm, the elastic edge of vibrating diaphragm 2 and non-magnetic conduction basin frame 3 bonding connections, non-magnetic conduction basin frame 3 and permanent magnet 4, peripheral magnetic conductive soft iron 5 is bonding, be welded to connect, permanent magnet 4 and non-magnetic conduction basin frame 3, peripheral magnetic conductive soft iron 5 bonding connections or permanent magnet 4 and non-magnetic conduction basin frame 3, peripheral magnetic conductive soft iron 5, the 6 bonding connections of center magnetic conductive soft iron, center magnetic conductive soft iron 6 and peripheral magnetic conductive

soft iron

5 or 4 bonding connections of permanent magnet, voice coil loudspeaker voice coil 7 be around in skeleton and be positioned magnetic gap central authorities again with

ripple locating support

8 and 2 bonding connections of vibrating diaphragm, the elastic edge and non-3 bonding connections of magnetic conduction basin frame of pressure ring 9 and vibrating diaphragm 2.The action principle of its action principle and existing coil-moving speaker is basic identical, different is that the magnetic direction in this loudspeaker voice coil is that this can satisfy the needs of cylindrical voice coil loudspeaker voice coil radial magnetic field orientation as Fig. 2, radial radial magnetic field shown in Figure 4.The radial magnet loud speaker also has external magnetic type and internal magnetization dual mode, and when permanent magnet is an external magnetic type outside voice coil loudspeaker voice coil, permanent magnet is an internal magnetization within voice coil loudspeaker voice coil.If as shown in Figure 3, voice coil loudspeaker voice coil is inside and outside permanent magnet radially all arranged then be combination magnet loud speaker radially.The magnetic field of the permanent magnet of radial magnet loud speaker does not need just can directly act on the voice coil loudspeaker voice coil through the magnetic conductor guiding, so the enhancing of the magnetic field intensity of voice coil loudspeaker voice coil, and voice coil loudspeaker voice coil increases the thrust of vibrating diaphragm thereupon, and acoustic pressure increases, and loudspeaker sensitivity improves.

The utility model is compared with existing coil-moving speaker, following advantage and useful effect are arranged: 1. since the magnetic field of this radial magnet loud speaker permanent magnet do not need through the magnetic conductor guiding and can directly act on voice coil loudspeaker voice coil, help to strengthen the magnetic field intensity at voice coil loudspeaker voice coil place, voice coil loudspeaker voice coil is increased the thrust of vibrating diaphragm, acoustic pressure increases, and loudspeaker sensitivity improves; 2. the magnetic head structure of this radial magnet loud speaker is comparatively simple, only is made up of three parts, can make loud speaker make ultrathin type like this, and volume reduces, and is convenient to the use of small size electroacoustic equipment, also is convenient to reduce cost; 3. this radial magnet loud speaker, does not leak in magnetic field, loud speaker magnetic head leakage field not, makes it can be applicable to the equipment that requires no magnetic disturbance.

Figure of description is further specified as follows: Fig. 1 is the radial magnet loadspeaker structure schematic diagram of external magnetic type radial magnetic field orientation; Fig. 2 for the A-A of Fig. 1 to analysing and observe the magnetic direction schematic diagram; Fig. 3 is the radial magnet loadspeaker structure schematic diagram of modular radial magnetic direction; Fig. 4 for the B-B of Fig. 3 to analysing and observe the magnetic direction schematic diagram.Among each figure: 1 is that dust cover, 2 is that vibrating diaphragm, 3 is that non-magnetic conduction basin frame, 4 is that permanent magnet, 5 is that peripheral magnetic conductive soft iron, 6 is that center magnetic conductive soft iron, 7 is that voice coil loudspeaker voice coil, 8 is that ripple locating support, 9 is that pressure ring, S are that the South Pole, magnetic field, N are the arctic, magnetic field.

Execution mode of the present utility model can be as follows: enforcement of the present utility model, make comparatively simple, the method for manufacturing of it and existing coil-moving speaker is basic identical, as long as by Fig. 1, the shown in Figure 3 design, and by the interconnected relationship of described each parts of top specification carry out loud speaker assembling, bond or be welded to connect, just can manufacture the utility model preferably---the radial magnet loud speaker of radial magnetic field orientation.Fig. 1 is again the production assembling instance graph of the radial magnet loud speaker of one 65 millimeters bore external magnetic type radial magnetic field orientation.Dimensional units is millimeter among the figure, φ A=65 among the figure, φ B=34, φ C=30, φ D=14.4, φ E=13, h=3, b=2, L=17,1=9.

Claims

1, a kind of radial magnet loud speaker of radial magnetic field orientation, it is characterized in that: it is by dust cover (1), vibrating diaphragm (2), non-magnetic conduction basin frame (3), permanent magnet (4), peripheral magnetic conductive soft iron (5), center magnetic conductive soft iron (6), voice coil loudspeaker voice coil (7), ripple locating support (8), the common bonding of pressure ring (9), be welded to connect formation, its interconnected relationship is: dust cover (1) and bonding connection of vibrating diaphragm (2), the elastic edge of vibrating diaphragm (2) and non-magnetic conduction basin frame (3) bonding connection, non-magnetic conduction basin frame (3) and permanent magnet (4), peripheral magnetic conductive soft iron (5) is bonding, be welded to connect, permanent magnet (4) and non-magnetic conduction basin frame (3), the bonding connection of peripheral magnetic conductive soft iron (5), permanent magnet (4) also can with non-magnetic conduction basin frame (3), peripheral magnetic conductive soft iron (5), the bonding connection of center magnetic conductive soft iron (6), center magnetic conductive soft iron (6) and peripheral magnetic conductive soft iron (5), also can with bonding connection of permanent magnet (4), voice coil loudspeaker voice coil (7) be around in skeleton and be positioned magnetic gap central authorities again with ripple locating support (8) and bonding connection of vibrating diaphragm (2), the elastic edge and bonding connection of non-magnetic conduction basin frame (3) of pressure ring (9) and vibrating diaphragm (2).