CN207926542U - 3.579MHz quartz-crystal resonator - Google Patents

Abstract

The utility model discloses a kind of 3.579MHz quartz-crystal resonators, including a quartz wafer, the shape of the quartz wafer is parallelogram, four sides of the parallelogram are in circle width shape, the acute angle of the parallelogram is 84 degree~86 degree, the length of the parallelogram is 7.196mm~8.795mm, and the width of the parallelogram is 1.748mm~2.136mm, and the resonant resistance of the 3.579MHz quartz-crystal resonators is the Ω of 50 Ω~65.The 3.579MHz quartz-crystal resonators for implementing the utility model, have the advantages that：The resistance level of resonance can be reduced, meet the requirement that resistance is less than 70 Ω wiring boards producers.

Description

3.579MHz quartz-crystal resonator

Technical field

The utility model is related to quartz-crystal resonator field, more particularly to a kind of 3.579MHz quartz-crystal resonators.

Background technology

The resistance level of 3.579MHz quartz-crystal resonators resonance is between the Ω of 70 Ω~90 currently on the market, resistance compared with Greatly, the requirement that resistance is less than 70 Ω wiring boards producers cannot be met, determine the mainly stone of the resistance level of Quartz crystal resonant English chip, but due to lacking the research to quartz wafer, there is presently no technologies can reduce 3.579MHz Quartz crystal resonants The resistance level of device resonance.

Utility model content

The technical problem to be solved by the present invention is to for the drawbacks described above of the prior art, provide a kind of energy reduction The resistance level of resonance, the 3.579MHz quartz-crystal resonators for meeting requirement of the resistance less than 70 Ω wiring boards producers.

Technical solution adopted by the utility model to solve its technical problems is：It is humorous to construct a kind of 3.579MHz quartz crystals Shake device, including a quartz wafer, and the shape of the quartz wafer is parallelogram, and four sides of the parallelogram are in circle The acute angle of width shape, the parallelogram is 84 degree~86 degree, and the length of the parallelogram is 7.196mm~8.795mm, The width of the parallelogram is 1.748mm~2.136mm, and the resonant resistance of the 3.579MHz quartz-crystal resonators is The Ω of 50 Ω~65.

In 3.579MHz quartz-crystal resonators described in the utility model, the material that the quartz wafer uses is behaved Crystal is made, a face of the quartz wafer is the faces-X, another opposite face of the quartz crystal is the faces+X.

In 3.579MHz quartz-crystal resonators described in the utility model, the acute angle of the parallelogram is 85 Degree.

In 3.579MHz quartz-crystal resonators described in the utility model, the width of the parallelogram is 1.942mm。

In 3.579MHz quartz-crystal resonators described in the utility model, the length of the parallelogram is 7.995mm。

The 3.579MHz quartz-crystal resonators for implementing the utility model, have the advantages that：Due to quartz wafer Shape be parallelogram, the acute angle of parallelogram is 84 degree~86 degree, and four sides of parallelogram are in width shape is justified, in this way The coupling that all kinds of extraneous waves and principal oscillation of quartz wafer can effectively be removed to reduce resistance, therefore can reduce resonance Resistance level, meet resistance be less than 70 Ω wiring boards producers requirement.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor Under, other drawings may also be obtained based on these drawings.

Fig. 1 is the vertical view signal of quartz wafer in the utility model 3.579MHz quartz-crystal resonator one embodiment Figure；

Fig. 2 is the quartz wafer put in order in the embodiment when producing 3.579MHz quartz-crystal resonators in enormous quantities Schematic front view；

Fig. 3 is the schematic diagram for being cemented multiple quartz wafers using special fixture in the embodiment.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

In the utility model 3.579MHz quartz-crystal resonator embodiments, the 3.579MHz quartz-crystal resonator packets Including a quartz wafer 1 (referring to Fig. 1), Fig. 1 is the schematic top plan view of quartz wafer in the present embodiment, in Fig. 1, quartz wafer 1 Shape be parallelogram, four sides of parallelogram are in circle width shape b, and the acute angle a of parallelogram can be 84 degree~86 degree, The length of parallelogram can be 7.196mm~8.795mm, and the width of parallelogram can be 1.748mm~2.136mm, should 3.579MHz quartz-crystal resonators can effectively remove all kinds of extraneous waves of quartz wafer 1, and (such as length extension vibration, face is cut Become vibration) with the coupling of principal oscillation (thickness shear vibration), to reduce resistance.The 3.579MHz quartz-crystal resonators it is humorous The resistance that shakes is the Ω of 50 Ω~65.The resistance level of 3.579MHz quartz-crystal resonator resonance can be reduced to by the utility model Between the Ω of 50 Ω~65, therefore the resistance level of resonance can be reduced, meet the requirement that resistance is less than 70 Ω wiring boards producers.

It is noted that in the present embodiment, the acute angle a of parallelogram is selected as 85 degree, the length of parallelogram It is selected as 7.995mm, when the width of parallelogram is selected as 1.942mm, at this point, the effect that the utility model reaches is optimal.

In the present embodiment, for the material that quartz wafer 1 uses for synthetic quartz, synthetic quartz has directionality, quartz wafer 1 One of face be the faces-X, then another face corresponding thereto is exactly the faces+X.

In the present embodiment, when producing in enormous quantities to 3.579MHz quartz-crystal resonators, technological process is as follows：

1) size for arranging quartz wafer 1, same shelves are classified as by the quartz wafer 1 of equal length；

2) quartz wafer 1 is arranged by size length it is in a row, particularly as being that the quartz wafer 1 in same shelves is nonseptate It is arranged in a row, the queue arranged is divided into more parts, in the present embodiment according to setting length range with vernier caliper, every part Length is equal or close to 26.5mm, and every part is exactly a packet, and two of the quartz wafer 1 of top and bottommost will be in every part The outside of short side respectively adds a sheets (thin glass), particularly as being that sheet glass 2 is pasted onto parallel four by dedicated adhesive agent Two short side positions of side shape；

3) quartz wafer 1 that supplied materials ties is sequenced, the faces-X of quartz wafer 1 is placed on, by each quartz wafer 1 It is being pasted together by dedicated adhesive agent, Fig. 2 is to produce 3.579MHz quartz-crystal resonators in enormous quantities in the present embodiment When the schematic front view of quartz wafer put in order；

4) it uses special fixture 3 and dedicated adhesive agent to cement quartz wafer 1, oblique 5 degree is formed, as shown in figure 3, Fig. 3 is The schematic diagram for being cemented multiple quartz wafers using special fixture in the present embodiment；

5) quartz wafer 1 cemented is divided using special linear cutting equipment and is molded；

6) use special equipment, carry out shape deburring, remove quartz wafer 1 all kinds of extraneous waves (such as length extension vibration, Face shear-vibration) with the coupling of principal oscillation (thickness shear vibration), to reduce resistance.

In short, in the present embodiment, since the shape of quartz wafer 1 is parallelogram, the acute angle a of parallelogram is 85 Four sides of degree, parallelogram are in circle width shape b, can effectively remove all kinds of extraneous waves and the principal oscillation of quartz wafer 1 in this way Coupling, to reduce resistance, therefore the resistance level of resonance can be reduced, meet resistance and wanted less than 70 Ω wiring boards producers It asks.

The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model Protection domain within.

Claims (4)

1. a kind of 3.579MHz quartz-crystal resonators, which is characterized in that including a quartz wafer, the shape of the quartz wafer Shape is parallelogram, and four sides of the parallelogram are in circle width shape, and the acute angle of the parallelogram is 84 degree~86 degree, The length of the parallelogram is 7.196mm~8.795mm, and the width of the parallelogram is 1.942mm, described The resonant resistance of 3.579MHz quartz-crystal resonators is the Ω of 50 Ω~65.

2. 3.579MHz quartz-crystal resonators according to claim 1, which is characterized in that the quartz wafer used Material is synthetic quartz, and a face of the quartz wafer is the faces-X, another opposite face of the quartz crystal is the faces+X.

3. 3.579MHz quartz-crystal resonators according to claim 1, which is characterized in that the parallelogram it is sharp Angle is 85 degree.

4. 3.579MHz quartz-crystal resonators according to claim 1, which is characterized in that the length of the parallelogram Degree is 7.995mm.