摘要:
A piezoelectric device and method comprising a piezoelectric vibrating reed 10 and excitation electrodes which are mounted in a package having a package base 42 and outer terminals using a TAB tape 20 composed of a plurality of electrical conductors formed on an insulating material with each of the plurality of electrical conductors disposed in an arrangement forming predetermined winding patterns 30 thereon with the wiring patterns 30 interconnecting the excitation electrodes to the outer terminals.
摘要:
A device for measuring a physical value, such as a vibratory gyroscope, is provided. The device comprises a vibrator; a driving means for exciting a driving vibration in the vibrator; a detecting means for obtaining an output signal based on a detection vibration excited in the vibrator in response with the physical value; and a detection circuit for processing the output signal to provide a detection signal corresponding with the physical value. The vibrator has at least one bending vibration arms 1A and 1B vibrating in bending mode along a specified plane (X-Y plane). The bending vibration arm comprises at least a pair of base parts 2A, 2B and a connecting part 3 connecting the base parts 2A, 2B. The connecting and base parts define a pair of recesses 8A, 8B.
摘要:
The invention provides a piezoelectric vibration gyro element including a pair of detecting resonant arms at its center, connecting arms each on, the right and left of the center, and a pair of driving resonant arms at each far end of the connecting arms, which makes it possible to secure the symmetry of the resonant arms' flexure and vibrating, and easily and accurately separate electrodes. In particular, two side surfaces of extension parts that extend along the direction in which each end surface of connecting arms extends, flat surfaces are provided to both sides in a direction perpendicular to the direction in which driving resonant arms extend. A wiring passing across the end surface of the extension parts in its thickness direction and joining front and back main surfaces of the end surface of the connecting arms and the extension parts can be formed so as to electrically couple the first driving electrodes each on the front and back main surfaces of the driving resonant arms. The exposure for electrode separation can be done from the above in a direction perpendicular to the flat surface of the extension part and with a given angle to the main surfaces of the driving resonant arms so as to simultaneously expose the main surfaces and side surfaces to light.
摘要:
A piezo-electric vibration reed 1 including connection arms extended in opposing directions from a base 12, drive arms extended in a direction perpendicular to the connection arms at the respective tips of the connection arms 13 and 14, and detection arms extended from the base 12 in a direction perpendicular to the connection arms. In the respective tips of the drive arms, and the detection arms, there are formed a first deadweight portion and a second deadweight portion, which are adjustment portions used for mass adjustment. The adjustment portions are formed of deadweight layers and an electrode film.
摘要:
A gyro vibration piece detecting an angular velocity includes a supporting part, a driving part connected to the supporting part and performing vibration, and a detection part detecting vibration generated by Coriolis force generated by the rotation of the driving part. A connection part includes a connection portion having a fin and an end portion connected between at least one of a side of the driving part and a side of the supporting part and a side of the detection part and a side of the supporting part. The end portion includes a top surface and a side surface, whereby the side surface is substantially perpendicular to the top surface and includes a circular arc shape disposed along a bottom portion thereof opposite to a junction of the top surface and the side surface.
摘要:
A piezo-electric vibration reed 1 including connection arms extended in opposing directions from a base 12, drive arms extended in a direction perpendicular to the connection arms at the respective tips of the connection arms 13 and 14, and detection arms extended from the base 12 in a direction perpendicular to the connection arms. In the respective tips of the drive arms, and the detection arms, there are formed a first deadweight portion and a second deadweight portion, which are adjustment portions used for mass adjustment. The adjustment portions are formed of deadweight layers and an electrode film.
摘要:
A gyro vibration piece detecting an angular velocity includes: a supporting part; a driving part connected to the supporting part and performing vibration; a detection part connected through the driving part and the supporting part and detecting detection vibration generated by Coriolis force generated by the rotation of the driving part; and a connection part including a connection portion having a plurality of steps formed between a side of a width direction of the driving part or a side of a width direction of the detection part and a side of another portion connected to the driving part or the detection part, which are continuously connected. The connection part has a first end portion which is located on an innermost side of the connection part among the connection portion and has a circular arc shaped wall portion that connects a side of a width direction of the driving part or a side of a width direction of the detection part to a side of another portion connected to the driving part or the detection part, and a bottom surface having a predetermined depth.
摘要:
A device for measuring a physical value, such as a vibratory gyroscope, is provided. The device comprises a vibrator; a driving means for exciting a driving vibration in the vibrator; a detecting means for obtaining an output signal based on a detection vibration excited in the vibrator in response with the physical value; and a detection circuit for processing the output signal to provide a detection signal corresponding with the physical value. The vibrator has at least one bending vibration arms 1A and 1B vibrating in bending mode along a specified plane (X-Y plane). The bending vibration arm comprises at least a pair of base parts 2A, 2B and a connecting part 3 connecting the base parts 2A, 2B. The connecting and base parts define a pair of recesses 8A, 8B.
摘要:
The invention provides a piezoelectric vibration gyro element including a pair of detecting resonant arms at its center, connecting arms each on, the right and left of the center, and a pair of driving resonant arms at each far end of the connecting arms, which makes it possible to secure the symmetry of the resonant arms' flexure and vibrating, and easily and accurately separate electrodes. In particular, two side surfaces of extension parts that extend along the direction in which each end surface of connecting arms extends, flat surfaces are provided to both sides in a direction perpendicular to the direction in which driving resonant arms extend. A wiring passing across the end surface of the extension parts in its thickness direction and joining front and back main surfaces of the end surface of the connecting arms and the extension parts can be formed so as to electrically couple the first driving electrodes each on the front and back main surfaces of the driving resonant arms. The exposure for electrode separation can be done from the above in a direction perpendicular to the flat surface of the extension part and with a given angle to the main surfaces of the driving resonant arms so as to simultaneously expose the main surfaces and side surfaces to light.
摘要:
A package structure for a piezoelectric resonator includes a base which has a shape of flat box and made of an insulating material, and a thin lid bonded to the upper side of the base. A tuning fork type quartz crystal resonator piece is mounted at its one end, that is its base end, on electrode pads provided on the mounting surface in a cantilever manner using conductive adhesive so that it is parallel to the mounting surface, and hermetically sealed in a package with the lid engaged therewith. Either one or both of the mounting surface of the base and the inner surface of the lid has a recess formed at the location adjacent to the free end of a tuning fork type quartz crystal resonator piece so that the free end does not touch the inside surfaces of the packages when the quartz crystal resonator piece is largely dislocated on external impact.