CITIZEN HOLDINGS CO.

Tokorozawa, Japan

CITIZEN HOLDINGS CO.

Tokorozawa, Japan
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Patent
Citizen Finedevice Co. and Citizen Holdings Co. | Date: 2017-02-01

There is provided a pressure detection device (10) including: a pressure detection element (21a, 21b, 21c) which receives pressure (P) so as to output a detection signal (Qi) corresponding to the pressure P; and a processing circuit (30) which processes and outputs the detection signal (Qi) output from the pressure detection element (21), where the processing circuit (30) includes: a voltage transformation circuit (35) which only transforms a power supply voltage (Vdd) fed from an external power supply so as to obtain a first reference voltage (Vr1) with a predetermined voltage value; an integrator circuit (31) which uses the first reference voltage (Vr1) as an operation reference to perform integral processing on the detection signal (Qi) so as to convert the detection signal (Qi) into a voltage waveform; and at least one or more amplifier circuits (32) which use a second reference voltage (Vr2) with a predetermined voltage value as an operation reference to perform amplification processing on an output signal (Vout1) from the integrator circuit (31).


Patent
Citizen Finedevice Co. and Citizen Holdings Co. | Date: 2017-02-01

When a combustion pressure sensor (5, 5A...) is formed that includes at least: a case member (31...) which has a joint surface (31a...) on the side of a tip end and in which an opening portion is provided; a joint surface (41a...) which is brought into planar contact with the joint surface (31a...) of the case member (31...) so as to block the opening portion; a pressure reception member (40 ...) on which a combustion pressure acts; a welding portion (J2...) in which the joint surfaces (31a and 41a...) are joined to each other; and a piezoelectric element (10...) which is stored in the case member (31 ...) and converts a pressing force based on the combustion pressure transmitted from the pressure reception member (40...) into a signal, on the side of one edge side in at least the one joint surface (41a...), the one joint surface (41a...) is limited to a given depth of welding (t...) from the other edge side, a predetermined clearance portion (90...) is provided so as to form a predetermined gap with the opposite other joint surface (31a...) and a welding portion (J2...) is provided which includes at least all the limited joint surface (41a...) from the other edge side in the one joint surface (41a...).


Patent
Citizen Holdings Co. and Citizen Machinery Co. | Date: 2017-02-08

This disclosure provides a tool attachment part that can turn a tool supported by a tool attachment part with a simple structure. A tool attachment part (15A) includes an outer holder (50) detachably fixed to a fixed part (13a) and an inner holder (52) turnably and integrally supported by the outer holder (50). The inner holder (52) is formed with a support part (insertion portion Tb) to support a rotatable tool (14a). A drive-force transmission gear (53) is integrally provided on the inner holder (52). The drive-force transmission gear is detachably engaged with a tool turning drive gear (54) provided on a turret (12) side. The tool turning drive gear (54) is detachably attached to the turret (12) by the fixed part (13a) and is engaged with the drive-force transmission gear (53) such that the inner holder (52) turns, and thereby the rotatable tool (14a) supported by the support part turns.


Patent
Citizen Holdings Co. and Citizen Watch Co. | Date: 2017-02-01

Provided is an electric power generating device capable of performing electret power generation by efficiently rotating a rotating electrode group. The electric power generating device includes: a plurality of electret electrodes (12) each made of an electret material and formed into a planar shape, and arranged in a circle at intervals in a first plane; a plurality of counter electrodes (14) arranged in a circle in a second plane facing the first plane so as to face the plurality of electret electrodes (12) ; an oscillating weight (16) supported in a rotatable manner; and a motive power transmission mechanism (17) configured to transmit motive power generated by rotations of the oscillating weight to a rotating electrode group including any one of the plurality of electret electrodes (12) and the plurality of counter electrodes (14), to thereby rotate the rotating electrode group so that the rotating electrode group is moved relative to another electrode group, the motive power transmission mechanism (17) including a clutch mechanism (22) configured to transmit only a rotation of the oscillating weight (16) in one predetermined direction.


Patent
Citizen Holdings Co. and Citizen Watch Co. | Date: 2017-02-08

Provided is an electronic device including a rotary power generation device using an electret, which is capable of preventing a spiral spring from being wound up or fully extended. The electronic device includes a power generation mechanism (6) including: first rotary member, which is supported in a freely rotatable manner, and has a center of gravity shifted from a rotation center; second rotary member supported in a freely rotatable manner; an elastic member configured to elastically connect the first rotary member and the second rotary member to each other for rotary motions thereof; a stationary member arranged so as to be opposed to the second rotary member; and an electret film formed on a surface of any one of the second rotary member and the stationary member.


Patent
Citizen Finedevice Co. and Citizen Holdings Co. | Date: 2017-02-01

A disconnection detection circuit (1) includes: a pull-up resistor (103) to which the detection signal (Dd) is fed and which connects a signal line (113c) connected to the wiring cable (12) to a power supply (power supply voltage) (Vdd) or a pull-down resistor which connects the signal line (113c) to a GND; and a voltage clip circuit 105 (105a...) which includes a high-voltage clip circuit (105au...) which is connected between the signal line (113c) and the power supply (Vdd) and which clips the voltage of the signal line (113c) to the maximum specified voltage (Vdm) and a low-voltage clip circuit (105ad...) which is connected between the signal line (113c) and the GND and which clips the voltage of the signal line (113c) to the minimum specified voltage (Vds).


There is provided a bobbin for a thermal transfer sheet or an image-receiving sheet which can reduce the number of parts and can have a smooth surface. The bobbin includes a cylindrical bobbin body 11. A gear 12 including a number of teeth 13 is formed in one end surface of the bobbin body 11. The teeth 13 of the gear 12 each have the shape of a trapezoid when viewed from the side. One lateral side 13b of the trapezoid extends in the axial direction of the bobbin body 11.


Patent
Citizen Finedevice Co. and Citizen Holdings Co. | Date: 2017-02-01

There is provided a pressure detection device (10) including: a pressure detection element (21) which receives pressure (P) so as to output a detection signal (Qi) corresponding to the pressure (P); and a processing circuit (30) which processes and outputs the detection signal (Qi) output from the pressure detection element (21), where on a circuit board (40) on which a conductor pattern is formed, an integrated circuit (IC1) including an analog circuit which uses a reference voltage (Vr) set to a predetermined voltage value as an operation reference and converts the detection signal (Qi) into a voltage waveform is mounted, and the processing circuit (30) includes an input circuit 50 which feeds the detection signal (Qi) to the integrated circuit (IC1) and a shield pattern (SHP1) which surrounds the region of at least a part of the input circuit (50) and to which the reference voltage (Vr) is applied.


Patent
Citizen Holdings Co. and Citizen Machinery Co. | Date: 2017-02-08

This disclosure provides a turret tool post that can turn a tool supported by a tool attachment part relative to a turret with a simple structure. A turret tool post (10) includes a turret (12) turnably supported by a post body (11), turret turning means having a turret turning shaft (23) and the like to turn the turret (12), a tool attachment part (15) turnably holding a rotatable tool (14a) and attached to the turret (12), and tool-attachment-part turning means turning the tool attachment part (15) to turn the rotatable tool (14a). The tool-attachment-part turning means and the turret turning means are provided independently and arranged to face each other. The tool-attachment-part turning means includes a tool turning motor (41) installed inside the turret (12) and an attachment-part transmission shaft (90) connected to the tool turning motor (41).


Patent
Citizen Holdings Co. and Citizen Electronics Co. | Date: 2017-01-25

An LED illuminator configured to further reduce total harmonic distortion is provided. The LED illuminator has: a first LED string including a first partial LED string and a second partial LED string; a second LED string including a third partial LED string and a fourth partial LED string; a first switching circuit configured to switch between a state where only the first partial LED string is connected to a rectifier and a state where the first partial LED string and the second partial LED string connected in series are connected to the rectifier as a full-wave rectified voltage waveform that is output from the rectifier increases/decreases; and a second switching circuit configured to switch between a state where only the third partial LED string is connected to the rectifier and a state where the third partial LED string and the fourth partial LED string connected in series are connected to the rectifier, and the switching timing by the first switching circuit and the switching timing by the second switching circuit are set so as to differ from each other.

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