A kind of quartz resonator pedestal spring leaf
One, technical field
The utility model relates to a kind of quartz resonator pedestal spring leaf, belongs to the quartz resonator technical field of structures.
Two, background technology
The operation principle of quartz resonator and purposes:
Quartz resonator claims quartz crystal again.Its operation principle is a kind of resonating device that utilizes the inverse piezoelectric effect of quartz crystal (crystalline solid of silicon dioxide) to make, when quartz crystal is subjected to electric field action, deformation can take place in its some direction, if on the two poles of the earth of wafer, add alternating voltage, wafer will produce mechanical oscillation, and the mechanical oscillation of wafer simultaneously can produce alternating electric field again.Generally speaking, the amplitude of wafer mechanical oscillation and the amplitude of alternating electric field are very small, but when the frequency that adds alternating voltage was a certain particular value, amplitude obviously strengthened, and more much bigger than the amplitude under other frequencies, this phenomenon is called piezoelectric resonator.
Because quartz crystal unit has high-accuracy, high stability, it needing to be widely used in the various kinds of equipment, instrument, electronic product of frequency stabilization and frequency-selecting, is indispensable key element in the current electronic product.It not only plays crucial effect in the development of military electronic technology and industrial electronic technology, and the purposes in consumer electronic product more and more widely, consumption is increasing, and especially it is that other electronic devices and components are difficult to compare and replace in information transmission, frequency stabilization with selection, the effect of time standard aspect control.
The common processing method of quartz resonator is elder generation's silver electrode on the evaporation of quartz plate two sides; be placed on then on the pedestal metal spring sheet; two ends use silver conductive adhesive behind hot setting quartz plate and the reliable circuit of the fixing formation of reed to be connected; again encapsulating shell on the pedestal metal base plate, with the structure division in the seal protection cavity.When quartz resonator was worked, the resonant electrical signals that quartz plate produced was connected with external circuit with lead-in wire by metal spring leaf, used insulator to fix between metal lead wire and the base plate, played insulating effect.
Form in the member at quartz resonator, metal spring leaf directly contacts with quartz plate, have and support and the circuit interconnect function, the pedestal metal spring leaf that in industry extensively adopts has adopted the design of " U type groove " hollow out at present, make metal spring leaf have certain elasticity, to reduce the electrical characteristics influence of stress that the outside applies, as shown in Figure 4 to quartz resonator.But use the quartz resonator of this " U type groove " hollow out design metal spring sheet to be welded on when working on the circuit board, under certain condition, quartz resonator hollow out metal spring sheet easily and circuit board vibrate together, make quartz resonator generation vibration and noise signals, influence the operate as normal of circuit.
Three, summary of the invention
The purpose of this utility model is to solve the problem that above-mentioned " U type groove " hollow out metal spring sheet exists, provide a kind of and can reduce elasticity, be not easy to produce vibration, thereby significantly reduce vibration noise, reduce quartz resonator pedestal spring leaf the operating circuit influence with circuit board.
A kind of quartz resonator pedestal spring leaf of the present utility model, assembly for quartz resonator, quartz resonator comprises that the upper end is provided with the metal base plate 1 of metal shell 8, metal lead wire 3 passes metal base plate 1, and it is fixed by the inner set insulator of metal base plate 14, the upper end that metal lead wire 3 passes metal base plate 1 is connected with metal spring sheet 2, metal spring sheet 2 is connected with the quartz plate 7 that the upper and lower surface on top applies silver electrode 6 by silver conductive adhesive 5, special character is the hollow out metal spring sheet of original U type groove 9 is changed into the reed of band arc shaped groove or elongate slot 10, be that the metal spring sheet is provided with arc shaped groove or elongate slot 10, the perforated area of arc shaped groove or elongate slot 10 dwindles, to reduce the elasticity of metal spring sheet 2; The arc shaped groove or the elongate slot 10 that are arranged in one group of spring leaf of same quartz resonator are left-right symmetric (shown in Fig. 8,9), to keep balance;
Above-mentioned arc shaped groove or elongate slot 10 are on the pad 11 and the metal spring sheet between its homonymy quartz plate silver conductive adhesive 5 of metal lead wire 3, thereby shorten moment between the quartz plate strong point and the spring leaf greatly and (shown in Fig. 4,5, contrast L2<L1), reduce moment to reduce the elasticity of metal spring sheet 2.
For further enlarging accommodation, above-mentioned arc shaped groove or elongate slot 10 can also be the type groove of other regular shapes;
Be further to enlarge accommodation, above-mentioned arc shaped groove or elongate slot 10 can also be on the metal spring sheets between the free end 12 of the solder joint 11 of metal lead wire 3 and metal spring sheet.
A kind of quartz resonator pedestal of the utility model spring leaf, changing existing U type groove shape is arc shaped groove or elongate slot shape, by reducing the elasticity of spring leaf, make spring leaf be not easy to produce vibration with circuit board, thereby significantly reduced the probability that vibration noise produces, reduced the influence of noise signal operating circuit.
Four, description of drawings
Fig. 1: a kind of quartz resonator structural representation of the utility model;
The vertical view of Fig. 2: Fig. 1;
Fig. 3: the utility model base construction schematic diagram;
Fig. 4: original " U type groove " hollow out metal spring chip architecture schematic diagram;
Fig. 5: the utility model embodiment 1 chip architecture of the spring schematic diagram;
Fig. 6: the utility model embodiment 2 chip architecture of the spring schematic diagrames;
Fig. 7: the whole vertical view of original " U type groove " hollow out metal spring sheet;
Fig. 8: the whole vertical view of the utility model embodiment 1 spring leaf;
Fig. 9: the whole vertical view of the utility model embodiment 2 spring leafs;
Figure 10: the whole vertical view of the utility model embodiment 3 spring leafs.
Among the figure, 1, metal base plate; 2, metal spring sheet; 3, metal lead wire; 4, insulator; 5, silver conductive adhesive; 6, silver electrode; 7, quartz plate; 8, metal shell; 9, U type groove; 10, arc shaped groove; 11, pad; 12, free end.
Five, embodiment
Following with reference to accompanying drawing, provide this embodiment, formation of the present utility model is described further.
Embodiment 1
The quartz resonator of present embodiment and pedestal spring leaf are with reference to figure 1-5,8, the pedestal spring leaf is the assembly of quartz resonator, quartz resonator comprises that the upper end is provided with the metal base plate 1 of metal shell 8, metal lead wire 3 passes metal base plate 1, and it is fixed by the inner set insulator of metal base plate 14, the upper end that metal lead wire 3 passes metal base plate 1 is connected with metal spring sheet 2, metal spring sheet 2 is connected with the quartz plate 7 that the upper and lower surface on top applies silver electrode 6 by silver conductive adhesive 5, the hollow out metal spring sheet of original U type groove 9 is changed into the reed of band arc shaped groove 10, be that the metal spring sheet is provided with arc shaped groove 10, the perforated area of arc shaped groove 10 dwindles, to reduce the elasticity of metal spring sheet 2; The arc shaped groove 10 that is arranged in one group of spring leaf of same quartz resonator is left-right symmetric (as shown in Figure 8), to keep balance;
Arc shaped groove 10 is on the pad 11 and the metal spring sheet between its homonymy quartz plate silver conductive adhesive 5 of metal lead wire 3, thereby shorten the arm of force between the quartz plate strong point and the spring leaf greatly and (shown in Fig. 4,5, contrast L2<L1), reduce moment to reduce the elasticity of metal spring sheet 2.
Embodiment 2
The quartz resonator of present embodiment and pedestal spring leaf are with embodiment 1 difference with reference to figure 6,9
The hollow out metal spring sheet of original U type groove 9 is changed into the reed of band elongate slot 10, be that the metal spring sheet is provided with elongate slot 10, the perforated area of elongate slot 10 dwindles, to reduce the elasticity of metal spring sheet 2, the elongate slot 10 that is arranged in one group of spring leaf of same quartz resonator is left-right symmetric (as shown in Figure 9), to keep balance.
Embodiment 3
The quartz resonator of present embodiment and pedestal spring leaf are with embodiment 1 difference with reference to Figure 10
Arc shaped groove 10 is on the metal spring sheet between the free end 12 of the solder joint 11 of metal lead wire 3 and metal spring sheet.
A kind of quartz resonator pedestal of above embodiment spring leaf, change existing " U type groove " and be shaped as " arc shaped groove or elongate slot " shape, by reducing the elasticity of spring leaf, make spring leaf be not easy to produce vibration with circuit board, thereby significantly reduced the probability that vibration noise produces, reduced the influence of noise signal operating circuit.
Those skilled in the art do not break away from essence of the present utility model and spirit, it is novel to have the various deformation scheme to realize that this is suitable for, the above only is the preferable feasible embodiment of the utility model, be not so limit to interest field of the present utility model, the equivalent structure that all utilization the utility model specifications and accompanying drawing content are done changes, and all is contained within the interest field of the present utility model.