CN2445511Y

CN2445511Y - Internal heated quartz resonator

Info

Publication number: CN2445511Y
Application number: CN 00244533
Authority: CN
Inventors: 卢长寿; 张赛丽; 郑兴世
Original assignee: TIANPENG PIEZOELECTRIC TECHNOLOGY Co Ltd CHENGDU
Current assignee: TIANPENG PIEZOELECTRIC TECHNOLOGY Co Ltd CHENGDU
Priority date: 2000-09-27
Filing date: 2000-09-27
Publication date: 2001-08-29
Anticipated expiration: 2010-09-27

Abstract

The utility model relates to an internal heated quartz resonator. Quartz resonators currently and widely used are all external heated type and have large volume, high heating power and long time. The utility model provides the internal heated quartz resonator which has low heating power and is convenient for the miniaturization of oscillators. The internal heated quartz resonator is basically characterized in that a heating body for heating an iron shell of a quartz crystal is packaged in a glass shell cover; heating constant temperature grooves and temperature-controlled sensor fixing tubes are weld on outer walls of both sides of the heating body; heat wires and thermosensitive resistors are respectively arranged in the heating constant temperature grooves and the temperature-controlled sensor; the top part of the glass shell cover is provided with gas removing agent. The utility model has the prominent advantage that the internal heated quartz resonator be suitable for the miniaturization of resonators of various frequency points under phi 8.5 mm chips.

Description

The internal heat type quartz resonator

The utility model relates to a kind of quartz resonator, definitely say so a kind of quartz crystal heating to constant-temperature crystal oscillator and temperature compensating crystal oscillator, the internal heat type quartz resonator of temperature control.

The quartz resonator of extensive use at present is external heating type, and need power height during the big heating of volume, time are long.

The purpose of this utility model is: provide that a kind of volume is little, heating power is low, short have high stability a heating time, is convenient to the internal heat type quartz resonator of oscillator miniaturization.

The purpose of this utility model realizes by implementing following technical proposals: the internal heat type quartz resonator, by including plate stem stem base, being contained in and being combined into the glass clamshell that integral body, outer wall are stained with the aluminium matter film that reduces the thermal radiation loss on this base and with it, being encapsulated in vacuum degree is 5 * 10 ^-3Quartz crystal in the glass clamshell of Pa and the assemblies such as lead-out wire that are loaded in the stem stem base constitute, its essential characteristic is: also be packaged with the iron-clad calandria to the heating of the quartz crystal in it in the glass clamshell, paste the heated constant temperature groove interior dress heater strip of generation that is welded in iron-clad calandria both sides respectively, with the transducer stationary pipes and be contained in temperature control thermistor in the pipe, and glass clamshell inner top be equipped with prevent to manage in part exit, guarantee the microminiature of quartz crystal long-time stability, efficient getter slowly.Its additional technical feature is: (1) iron-clad calandria upper and lower respectively be equipped with a slice make the iron-clad calandria be fixed on the glass clamshell the center, guarantee the mica support chip that quartz resonance organ pipe overall structure is solid and reliable; (2) be contained in heater strip in the heated constant temperature groove, for reducing the heater strip of making by three rhenium tungsten after-combustion, electrophoresis insulation of heating power; (3) be contained in thermistor temperature-control senser in the transducer stationary pipes, adopt the PTC ceramic thermal resistance of glass dress negative temperature coefficient; (4) the crystal heater strip of quartz resonator homogeneous tube, transducer thermistor are by 6 lead-out wires on the dull and stereotyped stem stem base, and extraction tube is outer to be connected with outer circuit.

Advantage of the present utility model is: adopt dull and stereotyped stem stem base, the shell and the support of iron-clad encapsulation crystal that makes full use of the useful space, the selection standard of glass clamshell done suitably to revise as calandria, and outside its housing two limits, paste weldering heated constant temperature groove and transducer stationary pipes respectively, they are close on the iron-clad calandria, to its direct heating, heat efficiency height.Transducer is close to the iron-clad calandria, and is highly sensitive.In quartz crystal, quartz wafer is heated evenly by iron-clad calandria radiation heating.Efficient getter in that glass clamshell inner top is laid again by high-frequency induction heating, makes it evaporation at glass clamshell inwall after the exhaust, high vacuum state in the long term maintenance clamshell, thus make crystal reach purpose steady in a long-term.Adopt three rhenium tungsten after-combustion, the special heater strip of electrophoresis insulating barrier technology, when using 5 volts of direct voltages, heating current is less than 80mA, and constant temperature power reduces heating power less than 0.6W.Adopt the PTC ceramic thermal resistance of glass dress negative temperature coefficient to make temperature-control senser, it is minimum that resistance is exitted in a vacuum, guarantees vacustat in the crystal oscillator pipe.Outstanding advantage of the present utility model is, uses this internal heat type resonator, need not thick external thermal insulation, therefore the volume of oscillator is dwindled greatly, is to realize the optimal selection of miniaturization oscillator.

The utility model has following accompanying drawing:

Fig. 1 is the utility model vertical profile structural representation

Fig. 2 is the utility model AA place horizontal profile structure schematic diagram

Mark among the figure: 1 is getter, and 2 is mica sheet, and 3 is quartz crystal, and 4 is heater strip, and 5 is the heated constant temperature groove, 6 is thermistor, and 7 is the transducer stationary pipes, and 8 is the iron-clad calandria, and 9 is the glass clamshell, 10 is mica sheet, and 11 is dull and stereotyped stem stem base, and 12 is lead-out wire, and 13 is aluminium film reflector.

Embodiment: the long 25 ± 1mm of quartz-crystal resonator pipe shaft, pinout is grown up in 40mm, glass clamshell 7 external diameter φ 12mm; The leptoprosopy width of iron-clad calandria 8 is 3.5mm, and heated constant temperature groove and transducer stationary pipes are wide to be 6mm, and the quartz-crystal resonator volume is Φ 12 * 26mm, and the utility model is applicable to the resonator of the following various frequencies of Φ 8.5mm chip.

Claims

1, a kind of internal heat type quartz resonator, by include plate stem stem base (11), be contained in that this base (11) is gone up and be combined into it integral body, outer wall be stained with the aluminium matter film that reduces the thermal radiation loss glass clamshell (9), to be encapsulated in vacuum degree be 5 * 10 ^-3P _aGlass clamshell (9) in quartz crystal (3) and be loaded on lead-out wire (12) assembly of etc.ing formation in the stem stem base (11), it is characterized in that: in case (9), also be packaged with calandria (8) quartz crystal (3) heating, paste the heated constant temperature groove (5) that is welded in the interior dress heater strip (4) on the outer wall of iron-clad calandria (8) both sides respectively, and the transducer stationary pipes (7) of interior dress thermistor (6) temperature control, and glass clamshell (9) top be equipped with prevent to manage in part exit slowly, guarantee the microminiature of quartz crystal (3) long-time stability, efficient getter (1).

2, according to the described internal heat type quartz resonator of claim 1, it is characterized in that: iron-clad calandria (8) upper and lower respectively be equipped with a slice make calandria (8) be fixed on glass clamshell (9) the center, guarantee the solid and reliable mica support chip (2) of quartz resonance organ pipe overall structure and (10).

3, according to the described internal heat type quartz resonator of claim 2, it is characterized in that: be contained in the heater strip (4) in the heated constant temperature groove (5), for reducing to add the heater strip by three rhenium tungsten after-combustion, electrophoresis insulation manufacturing of power.

4, according to the described internal heat type quartz resonator of claim 1, it is characterized in that: be contained in thermistor (6) temperature-control senser in the transducer stationary pipes (7), adopt the PTC ceramic thermal resistance of glass dress negative temperature coefficient.

5, according to claim 3,4 described internal heat type quartz resonators, it is characterized in that: the crystal of homogeneous tube (3), heater strip (4), transducer thermistor (6) are by outside 6 lead-out wire extraction tubes on the dull and stereotyped stem stem base (11).Connect with outer circuit.