263 results about "Drop impact" patented technology

A flex-rigid wiring board has an insulative adhesive interposed between portions, lapping over each other, of the rigid and flexible substrates; and the interconnecting electrode pads on the rigid and flexible substrates are electrically connected to each other through a conductor lump penetrating the insulative adhesive, thereby providing lowered inductance in the high-frequency band, shortened signal-delay time, reduced noise generation due to signal reflected-wave, reduced drop impact, high connection reliability and high freedom of wire connection, and the wiring board can advantageously be manufactured with a reduced cost and a high yield.

A coil component is provided, and the coil component for an inductor is deformable dependent on flex of a flexible printed board due to elapse of time when mounted thereon, and has high resistance against dropping impact and has an inductance value. The coil component includes an anisotropic compound magnetic sheet which is layered on at least any one or both of the upper surface and the lower surface of an air core coil formed spirally in a plane and which is composed of flat or needle-shaped soft magnetic metal powder, which has a major axis and a minor axis and is dispersed in a resin material, the major axis of which corresponds to an in-plane direction of the air core coil.

There is provided a piezoelectric device for generating an acoustic signal in which an expansion mechanism expands a disposition of a laminated piezoelectric actuator by the principle of leverage. The mass of a base member placed in the expansion mechanism is larger than the mass of a vibration output member. An overall device size is small. The piezoelectric device has a pressurization structure for reducing a tractive force acting on the laminated piezoelectric actuator which is generated by the amplification. This enables provision of a piezoelectric device for generating an acoustic signal that is a small size, highly resistant to dropping impact, and has god acoustic performance with less sound leakage.

A liquid crystal display apparatus includes an optical sheet for uniformly diffusing light toward a light-emitting face, and a resin frame onto which the optical sheet is attached. The optical sheet has the first fixing portion or the second fixing portion. The optical sheet is attached to the resin frame by fitting the first fixing portion or the second fixing portion to a concavity created at the resin frame at a part corresponding to the first fixing portion or the second fixing portion. At least one notch is created at a boundary area between a display area of the optical sheet and the first fixing portion or the second portion so that deformation in the optical sheet caused by a significant mechanical stress, such as drop impact, does not extend to the display area.

The present invention relates to a reinforced thermoplastic resin composition having excellent moldability, processability, and mechanical strengths, as well as being capable of improving the drop impact resistance (surface impact strength determined by a falling ball test). The reinforced thermoplastic resin composition of the present invention includes 10 to 60% by mass of a graft copolymer (A) having a graft chain (A2) grafted to a rubber polymer (A1); 40 to 90% by mass of a matrix polymer (B) which includes one or more types of polymers selected from the group consisting of a vinyl-based copolymer (B-1), a polycarbonate resin (B-2), and a polyester resin (B-3); 0.1 to 50 parts by mass of an inorganic filler (D) and 0.5 to 20 parts by mass of a glycidyl ether unit-containing polymer (E) having a mass average molecular weight of 3,000 to 200,000.

Drop test apparatus, for performing a drop impact test by dropping an article to be tested on a landing surface in a free fall state and by colliding the article with the landing surface, is equipped with a holder for holding the article and an acceleration means for accelerating the holder. The holder with the article is accelerated in the dropping direction of the article by the acceleration means, and the article is released from the holder at the point when the holder is accelerated to a predetermined speed and is dropped to the landing surface. The reproducibility of the test can be enhanced due to an elimination of an unstable factor such as frictional resistance when the holder is dropped, and a higher test in a dropping height without scaling-up the apparatus can be achieved.

A cell according to the present invention comprises a positive electrode, a negative electrode, an electrolyte solution, and an outer casing, wherein the outer casing comprises a valve plate 30 having a thickness, an annular-shaped break groove 4 formed on the valve plate, and one or more of break aiding grooves 1 in the inner area of the break groove, and wherein the break aiding groove comprises such configurations that remaining thickness of the valve plate at the break aiding groove is thicker than remaining thickness of the valve plate at the break groove, and at least one end of the break aiding groove is connected with the break groove. In a cell provided with a valve plate which is a safety valve 9 comprising the break groove and the break aiding groove, the safety valve operates smoothly and releases a gas inside the cell quickly, and resistance to dropping impact is improved.

The present invention provides a harness type safety belt capable of absorbing a dropping shock to a user even if the user accidentally falls from an elevated position. According to the present invention, in such a case that a user A fails to apply a hook of a rope to a life line and the user A falls from an elevated position, an air bag 2 provided in a mounting body 1 is inflated. Therefore, the air bag 2 can absorb a dropping shock and the dropping impact applied to the user A can be reduced. In addition, in the case where the user A falls with the hook of the rope being connected to the life line, the user A is suspended by the rope. The body of the user A is supported by not only a waist part belt 1b but also shoulder part belts 1a and thigh part belts 1c. Therefore a tension applied from the rope to the body of the user can be dispersed to each of the belts 1a, 1b and 1c and the body of the user can be stably supported.

A test fixture for rollover crash testing of a test vehicle onto a movable sled surface employs a cradle to support and rotate the test vehicle. A suspension assembly is attached to each end of the cradle for vertically supporting and dropping the cradle. A gantry has a cross beam supported by a first telescoping column for support of a first of the suspension assemblies and translationally supported by a second telescoping column for support of a second of the suspension assemblies to position and releasably hold the suspension assembly. Roll control arms rotate the cradle and a trigger assembly releases the cradle and test vehicle from the cross beam for contact within a drop impact zone on the contact surface of the sled. A brake assembly then arrests vertical motion of the cradle.

Lead-free solder alloys and solder joints thereof with improved drop impact resistance are disclosed. In one particular exemplary embodiment, the lead-free solder alloys preferably comprise 0.0-4.0 wt. % of Ag, 0.01-1.5 wt. % of Cu, at least one of the following additives: Mn in an amount of 0.001-1.0 wt. %, Ce in an amount of 0.001-0.8 wt. %, Y in an amount of 0.001-1.0 wt. %, Ti in an amount of 0.001-0.8 wt. %, and Bi in an amount of 0.01-1.0 wt. %, and the remainder of Sn.

The invention belongs to the technical field of mobile phone accessories, and particularly relates to an anti-dropping mobile phone housing. The anti-dropping mobile phone housing comprises a mobile phone housing main body and elastic protection corners; the mobile phone housing main body is of a double-layer hollow structure; a first air bag, a second air bag and an air bag opening device are arranged in a cavity at each side edge of the mobile phone housing main body; air bag controllers and a power supply are arranged in the cavity at the bottom of the mobile phone housing main body; the elastic protection corners are arranged at four corners of the mobile phone housing main body; a pressure sensor and a spring component are arranged inside each of the elastic protection corners; the air bag controllers are connected with the pressure sensors; and each of the air bag opening devices includes a gas generator and an air bag ejection mechanism. When a dropping height of a mobile phone is too low, the time is too fast and the air bags are not opened timely, the elastic protection corners can effectively buffer the dropping impact force; and meanwhile, after the pressure sensors in the elastic protection corners receive signals and the signals are processed and are set by the air bag controllers, the air bag opening devices make responses and the air bags are ejected; and thus, a mobile phone screen is prevented from being broken or cracked.

It is an object of the present invention to provide: a conductive fine particle, which is used for conductive connection between fine electrodes and tends not to give rise to a crack in the solder layer or disconnection caused by breakage in the connection interface between an electrode and the conductive fine particle even with a drop impact and the like, and tends not to have fatigue even after repetitive heating and cooling; an anisotropic conductive material obtained by using the conductive fine particle; and a conductive connection structure.

The present invention relates to a conductive fine particle, which comprises a solder layer containing tin and being formed on a surface of a resin fine particle, with nickel adhered to a surface of the solder layer, and contains 0.0001 to 5.0% by weight of the nickel with respect to a total of a metal contained in the solder layer and the nickel adhered to the surface of the solder layer.

It is an object of the present invention to provide a moisture-curable polyurethane hot-melt resin composition having excellent waterproof properties, drop impact resistance, and flexibility. The present invention provides a moisture-curable polyurethane hot-melt resin composition containing a urethane prepolymer having an isocyanate group, the urethane prepolymer being produced through a reaction of a polyol (A) with a polyisocyanate (B), wherein the polyol (A) contains a polyether polyol (A-1), a crystalline polyester polyol (A-2), an amorphous polyester polyol (A-3), and an acrylic polyol (A-4). The present invention also provides an adhesive containing such a composition and an article in which such a composition is used.