摘要:
To provide a hand motion irregularity suppressed timepiece whose ability has been improved. As to a spring having a flat portion and a bent portion, the flat portion is disposed between a second chronograph wheel and a center wheel, and the bent portion is sandwiched and supported under a pressurized state by a train wheel bridge and a bottom plate. By this, the spring portion prevents a hand motion irregularity of the second chronograph wheel by the fact that the second chronograph wheel is pressure-contacted with the train wheel bridge. Further, by forming a gap between the second chronograph wheel and the center wheel, an accompanying rotation between the second center wheel and the center wheel is prevented.
摘要:
The present invention aims to provide a day display apparatus having less risk of occurrence of a day hopping even when an impact caused by a drop or the like is applied and a watch having the same. A day display apparatus of a watch includes a first day display wheel having a program tooth portion, a second day display wheel having a claw wheel portion and a gear portion, a jumper configured to perform a jump-and-stop operation with respect to the claw wheel portion, a day intermediate wheel engaging the gear portion, being rotated by the program tooth portion every time when the first day display wheel reaches a predetermined rotational position, and transmitting the rotation to the second day display wheel, and jump-and-stop control means configured to assume a rotation restrained position in which a jump-and-stop claw portion is restrained from coming apart from between the adjacent claw portions of the claw wheel portion when the jumper is at a rotation restrained state and assume a rotation allowing state in which the jump-and-stop claw portion is allowed to climb over the claw portion of the claw wheel portion every time when the first day display wheel reaches the predetermined rotational position and allows the second day display wheel to rotate.
摘要:
An analog chronograph timepiece has a main plate and a setting stem for correcting time information. Defined at the main plate are a reference vertical axis line passing through the rotational center of the main plate and disposed parallel to a central axis line of the setting stem, and a reference horizontal axis line passing through the rotational center of the main plate and disposed orthogonal to the main plate reference vertical axis line. The main plate has regions disposed relative to the reference vertical and horizontal lines and in which a time coil block and first and second chronograph coil blocks are selectively arranged.
摘要:
The present invention aims to provide a day display apparatus having less risk of occurrence of a day hopping even when an impact caused by a drop or the like is applied and a watch having the same. A day display apparatus of a watch includes a first day display wheel having a program tooth portion, a second day display wheel having a claw wheel portion and a gear portion, a jumper configured to perform a jump-and-stop operation with respect to the claw wheel portion, a day intermediate wheel engaging the gear portion, being rotated by the program tooth portion every time when the first day display wheel reaches a predetermined rotational position, and transmitting the rotation to the second day display wheel, and jump-and-stop control means configured to assume a rotation restrained position in which a jump-and-stop claw portion is restrained from coming apart from between the adjacent claw portions of the claw wheel portion when the jumper is at a rotation restrained state and assume a rotation allowing state in which the jump-and-stop claw portion is allowed to climb over the claw portion of the claw wheel portion every time when the first day display wheel reaches the predetermined rotational position and allows the second day display wheel to rotate.
摘要:
To effectively prevent positional deviation of a battery. A hook-shaped member of a spring electrode terminal, and hook-shaped members of a spring electrode terminal are arranged in respective apices of a regular triangle to restrict movements of a battery in a direction along a cross section against the bias of a spring electrode terminal, which abuts against a negative surface of the battery. Battery abutments are arranged in respective apices of a substantially regular triangle to permit the bias of the respective spring electrode terminals to bias the battery toward the battery abutment, thus restricting positional deviation of the battery in a horizontal plane. When the battery is to be removed, a battery removal tool arranged near the hook-shaped member is inserted into a tool insertion portion to remove the battery.
摘要:
To provide a method for forming a timepiece train wheel support plate, which allow the formation of a horizontal hole without using a hydraulic core, and molds for forming a timepiece train wheel support plate, as well as timepiece train wheel support plate formed by the molds and a timepiece having the timepiece train wheel support plate. A method for forming a bottom board involves moving a pair of molds having a plurality of protrusions closer to an opposite surface, fitting end portions of the plurality of protrusions on one mold of the pair of molds among end portions of a plurality of protrusions on the other mold, and filling void spaces formed by the pair of molds with molding material to form a timepiece train wheel support plate having a horizontal hole corresponding to a series of the end portions of the plurality of protrusions on the pair of molds, the series of the end portions being fit to one another.
摘要:
To provide a winding stem positioning plate-like structural body capable of suppressing an occupation space to a lowest limit, and an electronic timepiece possessing the same. A winding stem positioning plate-like structural body of an electronic timepiece 1 has a plate-like base body part which is disposed to a machine casing of a timepiece main body under a state that its main face forms an angle with a main face of the timepiece main body, and which is held by an engaging part of the machine casing of the timepiece main body, and an elastic winding stem engaging arm part which extends from one end edge in a thickness direction of the machine casing within the base body part to the thickness direction of the timepiece main body and an extension direction of the main face of the timepiece main body, which engages with a small diameter axle part adjoining a bead-like part of a winding stem in a winding stem engaging part of a tip, and which allows a transit of the bead-like part 27 by being elastically deformed in an F2 direction by the bead-like part when the winding stem is put in and out in A1, A2 directions.
摘要:
Disclosed is a slip gear structure which is easy to handle at the time of dismantling/assembly and which does not easily suffer breakage even if dismantling/assembly is repeated, and a timepiece equipped with the same. A slip gear structure for a timepiece includes: a gear main body portion in the form of an annular plate having in the outer periphery thereof tooth portions, there being provided spring portions extending across an inner opening; and a positioning member equipped with a small diameter plate-like portion having a central hole with which a shaft is rotatably fit-engaged and a pair of support wall portions arranged on both sides of the central hole and protruding from one surface. When the slip gear structure is in a non-fit-engaged state with respect to the shaft, the spring portions of the gear main body are elastically pressed against side edge portions of the support wall portions, with central spring portions thereof situated between the side edge portions protruding into the central hole; and when the slip gear structure is in a fit-engaged state with respect to the shaft at the central hole, the central spring portions of the spring portions of the gear main body portion are elastically pressed against the shaft for slip engagement with the shaft.
摘要:
A calendar mechanism includes: a calendar driving wheel equipped with a calendar finger portion rotating a calendar cogwheel portion and a cam portion equipped with a torque reduction shape portion; a lever main body portion rotatably supported on a substrate, a jumper support lever equipped with a cam follower portion following the cam portion, and a jumper operating spring shoe portion provided in an intermediate portion in the longitudinal direction of the lever main body portion and formed on the same side as the cam follower portion with respect to the rotating direction thereof; and a jumper arranged so as to be rotatable with respect to the jumper support lever while overlapping the lever main body portion of the jumper support lever, the jumper being equipped with a jump control finger portion which is directed in a direction opposite to the cam follower portion of the jumper support lever and whose distal end side end portion is pressed against the calendar cogwheel portion by a jumper spring portion locked to the jumper operating spring shoe portion.
摘要:
To provide an electronic timepiece having a power source terminal in which a spring is difficult to be fatigued and which is easy to fabricate and integrate. In an electronic timepiece of an indicator type, a circuit block and an anode can of a button battery are arranged to be respectively disposed on a top side and a bottom side of a movement. An hour wheel holder of a conductive elastic material is formed with a spring portion for a power source terminal and a spring portion for a circuit connection terminal. When the hour wheel holder constituting a back integrated part is integrated to the movement, the spring portion for the power source terminal is elastically brought into contact with the anode can 5a of the button battery, the spring portion for the circuit connection terminal is elastically brought into contact with a circuit connection terminal pattern of the circuit block, thereby, the button battery and the circuit block are conducted.