132results about How to "Improve fastening strength" patented technology

A rivet is provided which includes axially opposite end portions at least one of which is more likely to be deformed radially outwards than a remaining portion thereof, and the remaining portion is more resistant to a load applied in an axial direction of the rivet than the axially opposite end portions. As one example, the rivet includes a head portion and a cylindrical portion that extends from the head portion, and a recess is formed in the head portion so as to be open to a top surface of the head portion.

A blind bolt and a blind nut system wherein the blind bolt comprises a bolt main body having an oblong hole and a locking piece rotatably supported within the oblong hole. The locking piece is provided with a pair of rotary protrusions and a pair of pieces holding rotary protrusions projecting outwardly. The oblong hole includes a pair of rotation supporting grooves to accommodate the rotary protrusions and support rotary motion, and a pair of piece holding grooves to accommodate the piece holding the piece holding protrusions.

A method of forming a strong seam by using a sewing machine, without backstitching. In the sewing machine, a first shuttle hook which rotates in the counterclockwise direction, a first needle, a second needle, and a second shuttle hook which rotates in the counterclockwise direction are arranged in turn in the feed direction. A material to be sewn is fed every time when the needles simultaneously and independently form stitches, so as to form two independent seams which overlap each other in a manner such that the knots of the seams overlap each other on each knotted point, where one of the seams consists of perfect stitches, and the other seam consists of hitch stitches.

A bicycle fastener includes a fixing assembly (1) and a fastener assembly (3). The fixing assembly (1) is fixedly mounted to the frame (5) of the bicycle, and the fastener assembly (3) is used for supporting an article. The first moveable seat (31) and the second moveable seat (32) of the fastener assembly (3) are snapped into the first fixing seat (11) and the second fixing seat (12) of the fixing assembly (1) correspondingly, so that the fastener assembly (3) and the supported article are detachedly mounted to the frame (5) of the bicycle. The bicycle fastener can facilitate the disengaging and engaging of the article, prevent wear of the surface of the article, and enhance the fixing strength of the fastener assembly.

The invention discloses a post-doff unloading hand saw, comprising a frame and a saw blade. The frame is provided with an entrusting handle with holding holes; the bottom of the entrusting handle is provided with a transverse rod with inner cavity via-holes; the inner cavity of the transverse rod is embedded with an adjusting component; one end of the adjusting component is connected with the saw blade, and the other end is hinged with a back cover, which is buttoned with the end face of the rear part of the entrusting handle. The buttoned back cover is arranged at the back of the invention, and the hinged type buttoning method is adopted, and the adopted saw blade is convenient to be dissembled. The adjusting component with thread is arranged in the middle of the invention, which can make the buttoning travel of the saw blade adjustable. The invention embodies humanist design, and can improve the buttoning degree. The back cover and the entrusting handle are arranged in mesh, which takes the shape of an arc. In this way, the invention is beautiful, and can be matched with the hands for the people to hold.

Provided are: an exchangeable tip cutting tool in which breakage of the threaded section and breakage of the thread ridges during installation of the machining head and under increased cutting load during cutting are limited and which is capable of performing machining with high efficiency; and a machining head and a holder to be used in the exchangeable tip cutting tool. The flank angle (α) of the pressure flank (11) is set to be larger than the flank angle (β) of the clearance flank (12); and a holder (2, 2a) having a female threaded fastening section (8) wherein the angle of the screwing surface of the pressure flank is set to be larger than the angle of the screwing surface of the clearance flank.

A terminal processing structure of a coaxial cable includes a core wire, an insulator with which an outer periphery of the core wire is covered, a braid with which an outer periphery of the insulator is covered, and an outer sheath with which an outer periphery of the braid is covered. The outer sheath is divided into a distal piece and a proximal piece by being notched along a circumferential direction in a cable distal end and the distal piece is held in a position separate from the proximal piece and thereby an exposed part of the braid to which a braid crimp part of a shield terminal is crimped is formed between the distal piece and the proximal piece and also a distal end of the braid is covered with the distal piece.

The washing machine includes a tub, a bearing housing provided to the tub by injection molding such that a fastening part of the bearing housing is exposed to an outside of the tub, and a stator coupled to the fastening part. The washing machine suppresses generation of noise and vibration during a washing operation and has a motor firmly attached to the washing machine.

A scanning microscope probe in which a palladium covering film is formed on the surface of the protruding portion of a cantilever, and the base end portion of a nanotube is disposed in contact with the palladium covering film with the tip end portion of the nanotube protruding to the outside, thus allowing the tip end to be used as a probe needle end for detecting signals. A coating film is formed to cover all or part of the surface of this base end portion, and the nanotube is thus firmly fastened to the cantilever. Since the base end portion adheres tightly to the palladium covering film, both of them are electrically continuous. This palladium covering film allows, as an electrode film, the application of a voltage to the nanotube or the passage of an electric current through the nanotube, showing also good adhesion to the nanotube and cantilever.

The transformer has a bobbin, a coil assembly and a magnetic core assembly. The bobbin is mounted in the magnetic core assembly and has multiple connecting pins being formed on at least one side of a bottom surface of the bobbin. Each connecting pin has a top surface as a soldering surface that corresponds to a solder pad on a back of a circuit board. At least one fastener is further formed on the bottom surface of the circuit board. Therefore, when the transformer is mounted through the circuit board, the connecting pins are soldered on the back of the circuit board to reduce the total thickness of the combination of the transformer and the circuit board.

In a fastening method of press-fitting and fixing an axial end section of a second-stage pinion (1) into a circular opening (21) of a first-stage planetary carrier (2), at first press-fitting external teeth (13a), which have an addendum circle larger than an addendum circle of the other pinion part and has a sharp tooth top, are generated through manufacturing of tooth-cutting at an outer circumferential section of the axial end portion of the second-stage pinion (1). Then, a press-fit bore (22) that has a smaller diameter than the addendum circle of the press-fitting external teeth (13a), is formed at the circular opening (21) of the first-stage planetary carrier (2). The press-fitting external teeth (13a) are then press-fitted into the press-fit bore (22) so that tooth tops thereof cut into an inner circumference surface of the press-fit bore (22) to secure fastening strength between the second-stage pinion (1) and the first-stage planetary carrier (2).

The invention provides a guidewire, which can make sure bonding strength between a coil and a core shaft containing tungsten having bad wettability with brazing metal, and can enhance torque transmission performance. The guidewire (1) includes a core shaft (2) and a coil body (3) that covers the core shaft (2). The guidewire also includes a tip portion, an intermediate fixing portion, and a proximal-end fixing portion that fix the core shaft (2) and the coil body (3) to each other. The coil body (3) includes a single core wire formed of a tungsten wire and a single side wire formed of a stainless steel wire. The side wire is wound around the core wire so as to cover the outer periphery of the core wire.

Unit type air conditioner including a base plate forming a bottom part thereof, a barrier projected upward from a center part of the base plate, to divides the unit type air conditioner into an indoor part for mounting an indoor heat exchanger thereon and an outdoor part for mounting an outdoor heat exchanger thereon, a shroud for leading air drawn from an outdoor to the outdoor heat exchanger, the shroud dividing an inside of the outdoor part, exterior members including a cabinet surrounding opposite side parts and rear side part of he outdoor part, and a cover on the cabinet to form an upper exterior of the outdoor part, and a brace fastened to the barrier, the shroud, and the exterior members, for preventing relative positional change between the barrier, the shroud, and the external members, thereby fastening components rigidly, to enhance fastening strength.

A vehicle structure body includes: a vehicle interior member; an exterior member; and a fastening portion in which a first fastening seat of the vehicle interior member and a second fastening seat of the exterior member are fastened and fixed to each other in a state of being disposed to face each other. A first fastening part to which a first fastener is attached with a shaft portion of the first fastener, and a second fastening part to which a second fastener is attached with a shaft portion of the second fastener are provided adjacent to each other. An input direction of a shear load that is applied to the shaft portion of the first fastener in an orthogonal direction and an input direction of a shear load that is applied to the shaft portion of the second fastener in an orthogonal direction differ from each other.

A fastening device for a bicycle includes a fixed assembly and a fastening assembly. The fixed assembly is fixedly mounted to the frame of the bicycle, and the fastening assembly is used for supporting an article. The first moveable socket and the second moveable socket of the fastening assembly are snapped into the first fixed holder and the second fixed holder of the fixed assembly correspondingly, so that the fastening assembly and the supported article are detachedly mounted to the frame of the bicycle. The fastening device for a bicycle can facilitate the disengaging and engaging of the article, prevent wear of the surface of the article, and enhance the fixing strength of the fastening assembly.

The transformer has a bobbin, a coil assembly and a magnetic core assembly. The bobbin is mounted in the magnetic core assembly and has multiple connecting pins being formed on at least one side of a bottom surface of the bobbin. Each connecting pin has a top surface as a soldering surface that corresponds to a solder pad on a back of a circuit board. At least one fastener is further formed on the bottom surface of the circuit board. Therefore, when the transformer is mounted through the circuit board, the connecting pins are soldered on the back of the circuit board to reduce the total thickness of the combination of the transformer and the circuit board.

A power transmission device includes a pulley 1, a hub 2 and a power shut-off member 3 and further includes a cap 4, one face of which is fastened to an end portion of a rotary shaft 5 by screwing and the other face of which is fastened to the power shut-off member by screwing, so as to transmit power from the power shut-off member to the rotary shaft 5. Power is transmitted between the rotary shaft and the cap not only by this screw fastening portion but also by utilizing a seat surface B or both seat surfaces A and B, wherein the seat surface A is formed on a forward end face 5a provided on the rotary shaft and the seat surface B is formed on a screw root portion (an expanded diameter portion) 5d.

A radiation detector for a PET-MR apparatus, has a fastening-strength and a high cooling efficiency relative to a photoelectric conversion element. A holding member 31 holds a side-periphery and a bottom of a light detector 7 by a connection element 31a, and is strongly fastened by a connection base 27 and a gimlet hole 31b and a screw 33. A light shielding film 35 is a thin-film and adheres and covers an outer-periphery and the side-periphery of the holding member 31. The radiation detector has a robust fastening-strength, so that a locational shift of the scintillator block 3 is prevented. As a result, the radiation detector can detect γ-ray data accurately.

An accessory mounting structure has an accessory bracket holding accessories thereon and attached to the engine body of an internal combustion engine, to provide a shortest possible overall length. The accessory mounting structure includes an end part, with respect to a direction parallel to a crankshaft, of the engine body, provided with a passage, a part of the engine body, provided with a recess extending along the passage, and the accessory bracket partly sunk in the recess and fastened to the engine body. At least one accessory, such as an automatic tensioning device is held on the accessory bracket.

The invention discloses a bidirectional-fastened ultrasonic osteotomy knife, which comprises a shell, wherein a piezoelectric actuator and an ultrasonic vibrator are arranged at one end of the interior of the shell, and the ultrasonic vibrator is connected to the piezoelectric actuator; a sleeve is arranged on the ultrasonic vibrator; and the sleeve extends from the other end of the shell. According to the osteotomy knife disclosed by the invention, a long through slot is arranged on the sleeve and a connecting pillar which is arranged on a knife rod is capable of extending out of the long through slot, therefore the knife rod can be moved inside the sleeve as a sliding block is moved so as to remove the length of the knife rod; when the sliding block is moved nearby some limiting groove, the connecting pillar can be screwed into the limiting groove by rotating the knife rod, at which time two tension springs at the tail end of the moving knife rod are gradually tightened and winding force, which is in the radial direction of the knife rod, is generated between the two tension springs, so that the connecting pillar on the knife rod is firmly fastened in a semicircular clamping groove under the action of force in two directions; and the osteotomy knife is high in fastening strength and is also quite convenient in adjusting mode.

A fuel cell includes: two end plates that sandwich a cell stack from both ends thereof in a stacking direction; a side member that defines a distance between the two end plates; a connecting bolt that connects the end plates and the side member by a bolt axial force acting substantially in the stacking direction; and a stopper portion that is provided in at least one of the end plates, and that contacts a surface of the side member that extends in the stacking direction and that is located substantially opposite from the cell stack.

The invention discloses a multifunctional insulated operating rod, which comprises an upper segment of the insulated operating rod and a lower segment of the insulated operating rod, wherein the top end of the upper segment of the insulated operating rod is provided with a wire clamp bolt fastening tool head for fastening wire clamp bolts; the upper segment of the insulated operating rod is provided with a fork lever for achieving the functions of disassembling and assembling an insulating protective cover below the wire clamp bolt fastening tool head; the fork lever is connected with the upper segment of the insulated operating rod through a folding storage structure; the folding storage structure comprises a storage head which is arranged on the upper segment of the insulated operating rod in a protruding manner; a U-shaped storage seat is arranged on the storage head; a rotating shaft is arranged in the storage seat; the fork lever is rotationally connected to the rotating shaft; and the lower segment of the insulated operating rod is provided with a rotating structure. The multifunctional insulated operating rod solves the problem that a lot of insulated operating rods need to carry to an operation site in traditional distribution live-wire work; and the space is saved.

The invention discloses a bolt which comprises a screw rod, a nut, a push rod and a stop block; a guide hole coaxial with the screw rod is formed in the center of the screw rod; the push rod is arranged in the guide hole in a threaded connection manner, and the top end of the push rod, which is inserted in the guide hole, is tapered; a through groove is formed in the circumference of the screw rod in the direction perpendicular to the center line of the guide hole; and the stop block is positioned in the through groove and can side in the through groove. The bolt adopting the scheme and provided by the invention is applicable to fastening of various workpieces in sandwich space, and is very simple in operation; and only a hole with the diameter same as that of the screw rod is required to be drilled, so that the application range of the bolt is expanded, and the fastening strength of the workpieces is improved.

A manhole cover which has an upper body and a lower body coupled to each other to maintain balance, to endure loads applied from an external source in a stable manner, to protect the inside of the manhole from the ingress of rainwater, and to enable the upper body to be stably fixed inside the lower body.

The present invention provides a fastening bracket for fastening right and left ends of a deck cross member to respective fitting parts of a vehicle body frame. The fastening bracket includes a body plate to which one of the ends of the deck cross member is connected, a surface contact plate to which a fastening nut corresponding to a bolt to be inserted into corresponding one of the fitting parts of the vehicle body frame is fixed, the surface contact plate being provided in the body plate, a connection plate that is a part for connecting the body plate and the surface contact plate, the connection plate having a width in a direction perpendicular to a connecting direction of the body plate and the surface contact plate equal to or smaller than the surface contact plate, and a demarcating slit for demarcating the body plate and the surface contact plate.