67results about "Protection against external influences" patented technology

A rotation switch includes an operating member that is operable to rotate, a magnet member that rotates integrally with the operating member, a magnetic sensor that is placed opposite to the magnet member, and a frame-shaped anti-magnetic shield plate that surrounds the periphery of the magnetic sensor.

An electronic timepiece includes a radio wave receiving antenna (8) for receiving radio waves, electromagnetic motors (61, 65) for driving a time display part, a battery (5), and a body case for receiving the antenna (8), electromagnetic motors (61, 65), and the battery (5). The projection images projecting the antenna (8), electromagnetic motors (61, 65), and the battery (5) do not overlap as viewed in the viewing direction of a time display part are different each other, that is, they do not overlap two-dimensionally. By such a structure, the electronic timepiece can be thin and flat.

An article such as wristwatch that has a contoured front face and a rear face that is generally flat or can be presented in a generally flat configuration can be intimately wrapped in a close-fitting transparent protective film of skin-wrapped plastics material. The wrapping extends continuously over the article's front face and is skin-wrapped to match the contour of the first or front face. It extends over the article's second rear face and has overlapping or non-overlapping edges on the rear face. It can remain essentially invisible so the wrapped object can be displayed as though it were unwrapped. It enables the wrapped article to be transported and handled without risk of being scratched or otherwise deteriorated and can be readily removed from the article when the need to protect its surface ceases.

A device has a magnetically shielded component that is magnetically shielded from an external magnetic field, and a housing. The housing is made from a ferritic stainless steel that has an austenitized surface layer rendered on the surface, and an internal layer portion having an internal ferrite phase that functions as a magnetic shield for the magnetically shielded component.

The invention relates to a wrist watch, comprising a shell, a shielding cover, a letter tray, a clock mechanism arranged in the shielding cover and an elastic element arranged between the shell and the shielding cover. The letter tray and the shielding cover are made from materials with high magnetic conductivities. The letter tray clings to the upper end of the shielding cover tightly so as to form a closed shielding. The wrist watch in the invention realizes the functions of magnetism resisting and vibration enduring, thereby satisfying the requirements of high magnetism resisting and vibration enduring.

A radio-controlled timepiece in which its reception sensitivity is further enhanced. The radio-controlled timepiece includes: an antenna core 11 made of a magnetic material and formed as a single integrated body including a coiled portion (11a) wound with a coil 19 and extension portions 11b and 11c which are located respectively on the end-portion sides; additional cores 15 and 16 made of a magnetic material; magnetism-collection members 17 and 18 made of a magnetic material; a main plate 31 (timepiece substrate) made of a non-magnetic material; a guide member 33 made of a non-magnetic material; and a liquid-crystal-panel supporting frame 32 (magnetism-collection-member supporting members, pressing member) made of a non-magnetic material and having protrusions 32a and 32b (pressing members) formed thereon. When the main plate 31, the guide member 33, and the liquid-crystal-panel supporting frame 32 are assembled together, the protrusions 32a and 32b press the magnetism-collection members, respectively. Thus, the magnetism-collection members 17 and 18 come into contact respectively with the additional cores 15 and 16, and, at the same time, the additional cores 15 and 16 come into contact respectively with the extension portions 11b and 11c of the antenna core 11. Accordingly an antenna-core body with a large single body is formed, which enhances the reception performance.

A tourbillon, a movement and a timepiece are provided which can obtain excellent magnetic resistance on the basis of inhibiting enlargement. The tourbillion is provided with a frame unit (41) rotating around the axis (O1) of a gimbal axis (46, 47) and carrying a speed governing escapement (45); a first magnetic component being a functional component of the timepiece and extending at the first direction when being overlooked from the axial direction; and a second magnetic component extending at the second direction intersected with the first direction. In overlooking from the axial direction, an angle formed by a first straight line connecting the external side end surface at the first direction of the first magnetic component to the axis (O1) and a second straight line connecting the external side end surface at the second direction of the second magnetic component to the axis (O1) is set to be a range from 60 degrees to 120 degrees.

Provided is a thin type timepiece having antimagnetic performance and waterproofness. A case side wall includes therein a movement. A case back lid is fixed to the case side wall by raised portions. Further, the case back uses a two-layer clad material of a soft magnetic material and a non-magnetic material, and the soft magnetic material is disposed on the movement side of the case back lid.

The wristwatch of substantially rectangular shape includes two sliding shutter-type covers (6, 7) sliding over a case (1) to show or to conceal said case via manual action exerted on said shutters. The shutters are secured to the case by holding means (9) distinct from the guide means (8), said means being implemented to exert a vertical force (F) under each of the shutters tending to apply said shutters (6, 7) against the holding means (9) to reduce the shutter friction surface on the case.

Anti-trip mechanism for limiting the travel of a timepiece balance including a pin projecting from a staff, including a flexible multistable or bistable element carrying an anti-trip stop member and which is fixed, via flexible and elastic connecting members, to a rigid structural element of a timepiece movement. One end of said anti-trip stop member is arranged, according to the angular position of the balance, to interfere with the trajectory of the pin, and to perform the function of a stop if the balance exceeds its normal angular travel.

Each anti-trip stop member includes two arms whose respective ends each interfere with the trajectory of the pin.

The invention relates to an enclosure for shielding magnetic fields comprising at least two parts, more particularly a lower part (4, 5) and a bell-shaped upper part (3). The shape of these parts is such that it can surround the timepiece movement (1). Moreover, the upper part (3) is connected in such a way that, when connected to the movement, it can move in a plane parallel to the movement (1) and in a direction perpendicular to this plane substantially Do not move.

Watch case (1) comprising a case middle (2) made of plastic or electroformed material and a crystal (3), the crystal (3) or the case middle (2) comprises elbowed catches (4), each insertable in a bayonet fitting in a recess (5) of the case middle (2) or the crystal (3), and the case (1) includes a rotation stop means (6) angularly securing the case middle (2) and the crystal (3) in an angular position wherein a part of each catch (4) is frontally locked behind a holding surface of the case middle (2) or of the crystal (3), this rotation stop means (6) is frontally snap-fitted on the case middle (2) and/or the crystal (3) by snap-fit fingers (61) which are comprised therein and which cooperate with a complementary stop surface, of the case middle (2) and/or of the crystal (3).

The invention belongs to the watch technical field and relates to an anti-magnetic quartz needle watch. The anti-magnetic quartz needle watch comprises a movement, a dial, a case and a bottom cover; a first shielding cavity which is made of a high-magnetic permeability material and is used for shielding a magnetic field from space above the dial is arranged at a position between the movement and the dial; and a second shielding cavity which is made of a high-magnetic permeability material and is used for shielding a magnetic field from space below the bottom cover is arranged at a position between the movement and the bottom cover. According to the anti-magnetic quartz needle watch of the invention, the external magnetic fields, namely, the magnetic fields from the directions of the dial and the bottom cover, which may exert substantive influence on the quartz needle watch can be guided to the first shielding cavity and the second shielding cavity, so that the magnetic lines of force of the magnetic fields are under the action of the first shielding cavity and the second shielding cavity, so that the magnetic fields can be shielded, and therefore, the time keeping of the watch will not be affected by the magnetic fields, and the accuracy of the time keeping of the watch can be ensured.

The invention relates to a carbon-fiber composite-material super antimagnetic watch and a manufacturing method. The antimagnetic watch comprises a movement and a watch shell. The watch shell comprisesan antimagnetic inner container used for placing the movement, a letter disk, an antimagnetic bottom cover or a bottom cap, a protection cover and a carbon fiber outer layer, wherein the letter diskand the antimagnetic bottom cover or the bottom cap are arranged on two end surfaces of the antimagnetic inner container; the protection cover is arranged on a periphery of the antimagnetic inner container and protects the antimagnetic inner container from being eroded by a water liquid; and the carbon fiber outer layer wraps an outer side of the protection cover. The carbon fiber outer layer is made of a high polymer material and a carbon fiber and is used for wear resistance and compression resistance so as to protect the protection cover from damage. The letter disk, the antimagnetic bottomcover or the bottom cap and the antimagnetic inner container are made of a high-permeability material. The protection cover is made of a waterproof and anti-corrosion material. The watch possesses antimagnetic, waterproof and anti-corrosion functions and simultaneously possesses light-weight, light-thinning, fashion and beautiful characteristics; integral intensity of the watch shell is increased, simultaneously integral weight of the watch shell is light and an appearance is light and thin; and the structure is simple, usage is convenient, making cost is low and a good practicality functionis possessed.

The invention relates to the technical field of mechanical watch accessories, and discloses an energy-saving and environment-friendly mechanical watch rear cover device with a good waterproof effect.The device comprises a rear cover main body, a first track is arranged at the inner side of the rear cover main body, a first sliding block is connected to the inner side of a first track, and a second sliding block is connected to the right side of the first sliding block. A second track is connected to the outer side of the second sliding block, an L-shaped rod is connected to the front side ofthe first sliding block, a square block is connected to the lower side of the L-shaped rod, an arc-shaped rod is fixedly connected to the upper side of the second sliding block, and a rubber ring is arranged on the outer side of the arc-shaped rod. According to the energy-saving and environment-friendly mechanical watch rear cover device with the good waterproof effect, the square block is drivento rotate through the L-shaped rod so that the L-shaped rods on the left side and the right side rotate synchronously, the arc-shaped rods on the four sides are synchronously driven to move outwards to push the rubber ring outwards, and the rubber ring is better attached to the outer side of a rear cover main body; and according to the structure, the waterproof effect is good, and the normal working effect of the watch is not influenced.