CN2203006Y

CN2203006Y - Structure-improved receiver

Info

Publication number: CN2203006Y
Application number: CN 94214396
Authority: CN
Inventors: 高一男
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-06-24
Filing date: 1994-06-24
Publication date: 1995-07-05
Anticipated expiration: 2004-06-24

Abstract

The utility model relates to an inner magnetic-type receiver, which is an improved design to form an optimum gap between a vibration plate and an inner base and to have optimum vibration effect. The receiver comprises an upper cover, an outer shell, the inner base, the vibration plate and a base. The inner ring of the outer shell is provided with a trapezoid separator with central holes; the surface of the lower margin of the separator is provided with a plurality of slopes; the top margin of the inner base is provided with an upper-convex track on which a plurality of slopes are also arranged. When the outer shell is sheathed with the inner base, the adjustable gap is formed between the vibration plate and the inner base by a rotary way. The receiver both has good vibration effect at the ranges of high frequency and low frequency.

Description

Structure-improved receiver

The utility model relates to a kind of electro-acoustic transducer device, relates to a kind of receiver structure or rather.

Commercially available receiver is broadly divided into three kinds of carbon dust formula, moving-coil type and internal magnetizations.Wherein, carbon dust formula receiver moisture-sensitive and carbon dust is solidified influences resonance effect, and is modified into moving-coil type and internal magnetization.

Moving coil receiver connects a voice coil loudspeaker voice coil below the vibrating membrane center, in the time of above vibrating membrane is positioned over shell, be inserted in the interior utmost point and the gap between magnet of interior seat, as shown in Figure 1 with need making the voice coil loudspeaker voice coil superprecision.The voice coil loudspeaker voice coil B that is connected with vibrating membrane A is in magnet C and the interior seat in the utmost point D gap, and the upper and lower vibration by vibrating membrane A makes between magnet C and interior utmost point D and produces magnetic field induction.Yet voice coil loudspeaker voice coil B assembly precision requires high, and promptly the technical difficulty of control gap is big, has therefore influenced the product percent of pass of moving coil receiver.

The internal magnetization receiver is a kind of structure through simplifying, and as shown in Figure 2, comprises utmost point H in loam cake E, shell F, base G, the metallicity inverted T shape, metallicity outer utmost point I, magnet J, coil K and oscillating plate L.After the newel of utmost point H in the inverted T-shaped is worn the perforate of zygonema circle K, magnet J, outer utmost point I center, place oscillating plate L in the top of this sub-assembly again.After finishing assembling, begin magnet J is magnetized, when being charged to saturation condition, on the utmost point H, will lose the gap that produces upper and lower vibrating effect in oscillating plate L is attached at by magnetic field suction.Therefore, for make oscillating plate L can break away from utmost point H form the gap, after magnetizing, also need do demagnetization, the saturation condition so magnet J can not magnetize, this will directly influence the magnetic field induction effect, and oscillating plate can because of magnetize, demagnetization produces and is out of shape, and also influences resonance effect.

The purpose of this utility model is that internal magnetization receiver structure is made improvements, after shell and interior cover for seat are closed, be to make the oscillating plate and the interior seat that are placed in the shell top form appropriate gap with rotation mode, make oscillating plate to height, vibration in the low-frequency range all can reach the optimum resonance effect, and obtain best volume, simultaneously, make oscillating plate more sensitive to the induction in magnetic field, in addition through the combination after oscillating plate, shell and interior seat, internally the magnetite of seat magnetizes to saturation condition, need not the demagnetization operation, it is simple that the receiver of this improvement structure also should have combination, being convenient to procedure makes, save cost and time, the characteristics of characteristic good.

The utility model improves the receiver of structure, be made of loam cake, shell, the seat that is arranged in the outer utmost point of the shell containing metal T type utmost point, coil, magnetite and metal, oscillating plate and the base that is arranged in above the shell seat, it is characterized in that: described shell inner tip place is equipped with trapezoidal dividing plate one-body molded with shell, that the center is provided with opening; Described trapezoidal dividing plate lower edge ring is set protruding rail; Described protruding rail surface down is provided with the inclined plane of interband distance; Seat top edge place is equipped with protruding rail in described; Described epirelief track surface is provided with the inclined plane of the interband distance that contradicts each other with described down protruding rail surface tilt face, rotational shell and interior seat, in adjusting with the conflict area on the upper and lower protruding rail of shell inclined plane.

Inclined plane in described on seat, the upper and lower protruding rail of shell has three.

Described oscillating plate center is provided with the metal induction part, and the induction part below is over against described interior seat top, center, and described metal induction part outer rim is V-shaped.

Place the oscillating plate at shell upper, interior seat top to adjust and distance between interior because of the shell and the conflict degree on the upper and lower protruding rail of interior seat inclined plane, thereby formation best clearance, the V-shape portion position at oscillating plate induction position makes the oscillating plate induction part can go deep into the magnetic field induction district of the interior outer utmost point of seat and interior interpolar, and increases the sensitivity of oscillating plate induction.

Further specify technology of the present utility model below in conjunction with the embodiment accompanying drawing

Fig. 1 is traditional moving coil receiver side schematic view

Fig. 2 is traditional internal magnetization receiver side schematic view

Fig. 3 improves the side schematic view of structure receiver for the utility model

Fig. 4 is the structural perspective of shell 12 among Fig. 3, interior seat 13

Address before the explanation of Fig. 1, Fig. 2, repeat no more.

Referring to Fig. 3, Fig. 4, the internal magnetization receiver 10 that improves structure comprises a loam cake 11, a shell 12, one interior seat 13, one oscillating plate 14 and a base 15.

Shell 12 product that are one of the forming, its inner tip place and shell disjunctor ring are established a trapezoidal dividing plate 121, and as shown in Figure 4, these trapezoidal dividing plate 121 inside center places are provided with a perforate 122; Trapezoidal dividing plate lower edge is equipped with down protruding rail 123, the intersegmental distance of number inclined plane 1231 from high to low can be polished out in this time protruding rail 123 surfaces, what be linked in the shell below is seat 13 in, should be positioned at trapezoidal dividing plate 121 belows by interior seat 13 apical margins, interior 13 product that also are formed in one comprise that the utmost point 131, center are provided with the outer utmost point 132 of metal of perforation 1321, magnetite 133 and the coil 134 that the center is provided with circular hole in the metal inverted T-shaped.Be overmolding to interior seat 13 in regular turn with the newel 1311 assembling coil 134 and the outer utmost points 132 of above-mentioned parts, and with this assembly with plastic material with the utmost point 131 in the T shape.

Interior seat 13 top edge places are provided with protruding rail 135, the intersegmental distance of number inclined plane 1351 is from high to low also polished out on last protruding rail 135 surfaces, just can the conflict inclined plane 1231 of subordinate's protruding rails 123 in the shell 12, the inclined plane 1351 that should go up protruding rail 135, in case upper and lower protruding rail 135,123 is conflicted by both

inclined planes

1351,1231 mutually, by the shell 12 internally rotation of seat 13 mutually, the largest interval with a contact is adjusted in the minimum interval of the

inclined plane

1231,1351 that makes both during by comprehensive the conflict, oscillating plate 14 is also adjusted thereupon, and 13 of interior seats form best clearance 20.

Most preferred embodiment of the present utility model is respectively established three sections inclined

planes

1351,1231 on upper and lower protruding rail 135,123, form the poised state of 3 conflicts.

Oscillating plate 14 places on the shell 12 trapezoidal dividing plates 121, the oscillating plate 14 edges trapezoidal dividing plate 121 of conflicting, oscillating plate 14 centers are provided with metal induction position 141, top, center with respect to interior 13 under this induction position 141,131 of the promptly outer utmost point 132 and the interior utmost points, the coil 134 and the magnetic field of magnetite 133 inductions formation magnetic line of force sealing are located, the induction position 141 of oscillating plate 14 is by traditional plane V-arrangement shape 142 that changes into, can make the dither effect in high frequency tremendously low frequency (characteristic frequency) scope reach the optimum resonance effect, obtain max volume from face, and because V-arrangement shape 142 can promote on the oscillating plate 14 than the magnetic field induction district of 131 of the plane more deep outer utmost point 132 and the interior utmost points, the sensitivity of following vibration induction.

After shell 12, interior seat 13 and oscillating plate 14 combinations, can magnetize to saturated mode, needn't carry out demagnetization and can adjust oscillating plate 14 and interior 13 best clearance 20, formation optimum resonance effect by the shell 12 and the rotation of interior seat 13 to magnetite 133.Not only the magnetic of magnetite 133 can not be charged to the saturated size that influences induced field because of the end, and because of clearance-adjustable 20 also can reduce because of the not good oscillating plate that causes 14 of demagnetization can not break away from the seat can't produce the problem of upper and lower vibration, really increased the sensitivity of receiver 10, simultaneously simple in structure, improved product quality.

Claims

1, a kind of receiver that improves structure, be made of loam cake, shell, the seat that is arranged in the outer utmost point of the shell containing metal T type utmost point, coil, magnetite and metal, oscillating plate and the base that is arranged in above the shell seat, it is characterized in that: described shell inner tip place is equipped with trapezoidal dividing plate one-body molded with shell, that the center is provided with opening; Described trapezoidal dividing plate lower edge ring is set protruding rail; Described protruding rail surface down is provided with the inclined plane of interband distance; Seat top edge place is equipped with protruding rail in described; Described epirelief track surface is provided with the inclined plane of the interband distance that contradicts each other with described down protruding rail surface tilt face, rotational shell and interior seat, in adjusting with the conflict area on the upper and lower protruding rail of shell inclined plane.

2, the receiver of improvement structure according to claim 1 is characterized in that: the inclined plane in described on seat, the upper and lower protruding rail of shell has three.

3, the receiver of improvement structure according to claim 1 is characterized in that: described oscillating plate center is provided with the metal induction part, and the induction part below is over against described interior seat top, center, and described metal induction part outer rim is V-shaped.