Abstract: A temperature compensation-type balance includes a balance staff, and a balance wheel having a plurality of bimetal portions disposed in parallel to each other in a circumferential direction around a rotation axis of the balance staff. Connection members connect respective ones of the plurality of bimetal portions and the balance staff. Each bimetal portion is a layered body in which a first member and a second member are radially overlapped, and one end portion in the circumferential direction is a fixed end connected to a respective connection member and the other end portion in the circumferential direction is a free end. The first member is formed of a ceramic material, and the second member is formed of a metal material having a thermal expansion coefficient different from that of the first member.

Abstract: An object is to provide an escapement which can improve energy transmission efficiency, a timepiece movement including the escapement, and a timepiece including the timepiece movement. There is provided an escapement 1 including an escape wheel 11, a double roller 53 that is disposed in a balance 5 pivotally moving around a balance staff 51, and a pallet fork 12 that can pivotally move around a pallet staff 33. The double roller 53 includes a first impulse pin 57 which comes into contact with the pallet fork 12 in response to a pivotal movement of the double roller 53 and causes the pallet fork 12 to pivotally move around the pallet staff 33, and a second impulse pin 58 which can come into contact with tooth portion 23 of the escape wheel 11. The pallet fork 12 includes two pallets of an entry pallet 45 and an exit pallet 38.

Abstract: An object is to provide an escapement which can improve energy transmission efficiency, a timepiece movement including the escapement, and a timepiece including the timepiece movement. There is provided an escapement 1 including an escape wheel 11, a double roller 53 that is disposed in a balance 5 pivotally moving around a balance staff 51, and a pallet fork 12 that can pivotally move around a pallet staff 33. The double roller 53 includes a first impulse pin 57 which comes into contact with the pallet fork 12 in response to a pivotal movement of the double roller 53 and causes the pallet fork 12 to pivotally move around the pallet staff 33, and a second impulse pin 58 which can come into contact with tooth portion 23 of the escape wheel 11. The pallet fork 12 includes two pallets of an entry pallet 45 and an exit pallet 38.

Abstract: A temperature compensation-type balance includes a balance staff, and a balance wheel that has a plurality of bimetal portions which are disposed in parallel to each other in a circumferential direction around a rotational axle O of the balance staff and connection members which connect the plurality of bimetal portions and the balance staff. The bimetal portion is a layered body in which a first member and a second member are radially overlapped, and one end portion in the circumferential direction is a fixed end connected to the connection member and the other end portion in the circumferential direction is a free end. The first member is formed of a ceramic material, and the second member is formed of a metal material having a thermal expansion coefficient different from that of the first member.

Abstract: The present invention aims to provide a bearing structure allowing direct adjustment between itself and an opposing bearing even after assembly and a watch equipped with the same. A bearing structure of a watch rotatably supports a forward end portion of a shaft of a wheel with respect to a base body, and includes: a bearing, a bearing support body supporting the bearing and having a male screw portion on an outer peripheral surface concentric with the shaft of the wheel, and an adjustment nut equipped with a female screw portion threadedly engaged with the male screw portion of the bearing support body, regulated in its displacement in the extending directions of the shaft of the wheel by the base body, and adapted to adjust the position of the bearing with respect to the extending direction of the shaft via the bearing support body.

Abstract: An anchor escapement of a mechanical watch has an escape wheel, a pallet fork engageable with or disengageable from a roller jewel of a pallet shaft having banking pin engaging portions at both sides, and pallet bridges engageable with the banking pin engaging portions at the pallet engaging portions to define the swing range of the pallet fork. One of the pallet shaft and the pallet bridges has elastic arm portions having engaging portions engageable with the engaging portions of the other member of the pallet shaft and the pallet bridge in a state in which the pallet fork fixes the escape wheel at the pallet jewel.

Abstract: The present invention aims to provide a bearing structure allowing direct adjustment between itself and an opposing bearing even after assembly and a watch equipped with the same. A bearing structure of a watch rotatably supports a forward end portion of a shaft of a wheel with respect to a base body, and includes: a bearing, a bearing support body supporting the bearing and having a male screw portion on an outer peripheral surface concentric with the shaft of the wheel, and an adjustment nut equipped with a female screw portion threadedly engaged with the male screw portion of the bearing support body, regulated in its displacement in the extending directions of the shaft of the wheel by the base body, and adapted to adjust the position of the bearing with respect to the extending direction of the shaft via the bearing support body.

Abstract: The switch structure according to the present invention is obtained by interposing an elastic connection member between the circuit board provided with electrodes and a push switch fixed to a case of an electronic device. The elastic connection member has a structure in which conductive layers and insulation layers are alternately laminated. The conductive layers of a first lamination layer surface on which the conductive layers and the insulation layers of the elastic connection member are exposed abut against the electrodes so that the electric connections therebetween are established. The push switch is pushed down, and a contact portion thereof abuts against the plurality of conductive layers on a second lamination layer surface, whereby the electrodes are in a conductive state. Even if the push switch is pushed strongly, the elastic connection member deforms to absorb the force. As a result, the switch structure which hardly breaks is obtained.

Abstract: The switch structure according to the present invention is obtained by interposing an elastic connection member between the circuit board provided with electrodes and a push switch fixed to a case of an electronic device. The elastic connection member has a structure in which conductive layers and insulation layers are alternately laminated. The conductive layers of a first lamination layer surface on which the conductive layers and the insulation layers of the elastic connection member are exposed abut against the electrodes so that the electric connections therebetween are established. The push switch is pushed down, and a contact portion thereof abuts against the plurality of conductive layers on a second lamination layer surface, whereby the electrodes are in a conductive state. Even if the push switch is pushed strongly, the elastic connection member deforms to absorb the force. As a result, the switch structure which hardly breaks is obtained.