924results about "Rivets" patented technology

A blind rive includes a mandrel, a rivet body, and a magnetic washer having a circular arc angle. The mandrel includes a mandrel head and a shank. The shank includes a grip section, a groove section, and a pull section having a reverse tapered surface. The mandrel head is connected to one side of the grip section of the shank. The end surface of the mandrel head that is connected to one side of the shank has a circular arc surface. The grip section is the portion of shank close to the mandrel head. The groove section is disposed on the shank and connected to the grip section. The pull section has a reverse tapered surface disposed on the shank and connected to the groove section. The rivet body includes a through hole matching the mandrel, a rivet head, and a protruding edge structure.

A fastening device for keeping at least first and second parts assembled, the fastening device comprising a tubular body passing through the first and second parts, an expansion nut and a screw that is seated in the tubular body and cooperates with the expansion nut. To facilitate the removal of the fastening device, the screw has at least one shape, such as a recess positioned on the transverse face thereof, to prevent it from rotating using a first tool, and the expansion nut has at least one shape, such as a flat, to unscrew it using a second tool. Also an assembly comprising at least one such assembly device as well as a removal method.

A surgical tool (1) comprising: a plurality of arms (2), each of the plurality of arms comprises an aperture; an elongate pin extending through the aperture of each of the plurality of arms, said elongate pin (8) comprising an end stop (10) at a first end of the elongate pin, said stop (10) being adjacent to the aperture of a first arm (3) of the plurality of arms (2), and an end portion at a second end of the elongate pin, said end portion extending beyond a second arm (4) of the plurality of arms; a bearing plate mounted onto said end portion of the pin directly adjacent to the aperture of the second arm (4), wherein the end portion comprises a deformed region, deformed such that the pin (8) forms an interference fit with the bearing plate. Also provided is a method (400) of manufacturing said surgical tool.

A fastener to connect a first component to a second component with an opening. The fastener includes a head with two lock tabs, each shaped with a sloped sidewall, and a lead-in portion that fits into the opening. A shank connects the lead-in portion to a push bar, which has at least one angled (chamfered) edge. Flexible legs extend between the head and the lead-in portion and compress as the lead-in portion is inserted. During installation, the chamfered edge of the push bar slides against the sloped sidewall of the lock tabs, allowing the push bar to move past them. Once in place, the lock tabs hold the push bar, keeping the flexible legs compressed and locking the fastener securely.

A method (10) for joining components (20, 22), particularly metal components, by means of a joining element (12) which is deformed during the joining process, comprising the following steps: coating (S2, S3) a joining element (12) with a temperature-stable coating (B1,B2) ; preheating (S6) at least one of at least two components (20, 22) in an area of a joining location to a temperature in the range from 90°C to 1.400 °C, preferably by plasma-heating, laser-heating, electric arc heating and / or induction heating, wherein the components (20, 22) are stacked on top of each other; and driving the coated joining element (12) into the stacked components (20, 22).

Multi-piece fasteners, fastening collar installation apparatus, and methods of fastening are provided. The multi-piece fastener comprises a fastening collar and a pin. The fastening collar comprises a first collar end, a second collar end, and a collar cavity. The collar cavity extends from the first collar end to the second collar end. The pin is configured to be at least partially received by the collar cavity. The pin comprises a first pin end comprising a head portion, a second pin end comprising a pull region, and a shank. The pull region is generally cylindrical and smooth and is configured to form at least one of an annular shoulder, a groove, a thread, and other feature responsive to forcible contact from a fastening collar installation apparatus. The shank extends intermediate the first pin end and the second pin end. The fastening collar is configured to be deformed onto the shank.

The invention provides a threaded blind rivet and an installation device, an installation method and a preparation method thereof. The threaded blind rivet comprises a core rod, a rivet body and a rivet sleeve. The core rod comprises a head protrusion, a first external thread section, a second external thread section and a clamping section which are sequentially connected, and a neck breaking groove is formed between the first external thread section and the second external thread section. The threaded pulling nail is not provided with a driving nut, so that the driving nut is prevented from being discarded along with the discarded section of the core rod, the cost of the threaded pulling nail is reduced, and resource waste is avoided.

The utility model relates to the technical field of rivets, in particular to a hippocampus rivet, which comprises a rivet core and a rivet shell, the rivet core comprises a rivet head, a riveting section, a snapping section and a rivet rod, the peripheral surface of the riveting section is provided with a first annular convex pattern and vertical convex teeth, the first annular convex pattern is arranged at the upper part of the riveting section in a surrounding manner, and the vertical convex teeth are arranged at the lower part of the riveting section. The vertical convex teeth are distributed on the lower portion of the riveting section at intervals in the circumferential direction of the riveting section, and the first annular convex lines and the vertical convex teeth all protrude out of the outer wall face of the riveting section; the nail shell comprises a nail shell body and a nail cap, and through holes are formed in the nail shell body and the nail cap in a penetrating mode. Through mutual cooperation of the first annular convex lines and the vertical convex teeth, tight engagement of the rivet core and the inner wall of the rivet shell can be achieved, the locking force of the rivet core is improved, axial movement and circumferential rotation of the rivet core in the rivet shell can be limited after riveting, the rivet core is effectively prevented from loosening and falling off, the connection strength between riveted workpieces is guaranteed, and the service life of the rivet core is prolonged. The technical problems that an existing hippocampus rivet core is insufficient in locking force, and the rivet core is prone to loosening and falling off after riveting are solved.

The invention discloses a threaded blind rivet for interference connection and a manufacturing method of the threaded blind rivet. The blind rivet comprises a core rod, a rivet sleeve, an interference lining, a rivet body and a driving nut. Wherein the nail body head part is connected with the outer wall surface of the nail body main body part through a first outer rounded corner transition surface, the inner wall surface of the lining head part is connected with the inner wall surface of the lining main body part through an inner rounded corner transition surface, and the outer wall surface of the lining head part is connected with the outer wall surface of the lining main body part through a second outer rounded corner transition surface; in a fastening state, the screw body conical part is attached to the lining conical part, the lining conical part is inserted into the screw sleeve, the first outer fillet transition face is attached to the inner fillet transition face, and the second outer fillet transition face can be attached to an inlet of the mounting hole. According to the invention, the stress at the joint of the nail body head and the nail body main body can be improved, the risk of deformation and fracture of the nail body head is reduced, the mechanical properties such as fatigue of the whole structure are improved, and the fastening degree and the bearing capacity of threaded nail pulling installation are improved.

The utility model discloses a double-headed sunken rivet cold heading device, and relates to the technical field of rivet processing equipment, the double-headed sunken rivet cold heading device comprises a base and an electric pressing rod, the electric pressing rod is not connected with the upper end of the base, the upper end of the base is provided with a sliding groove, and the two sides of the interior of the sliding groove are both connected with sliding blocks in a sliding mode. The device comprises two sliding blocks, springs are fixedly connected to the back-to-back sides of the two sliding blocks, molds are fixedly connected to the upper ends of the sliding blocks, inclined blocks are fixedly connected to the back-to-back sides of the two molds, a moving ring is jointly slidably connected to the outer sides of the two molds, and supporting rods are fixedly connected to the two sides of the upper end of the moving ring. The upper end of the supporting rod is fixedly connected with a moving plate, and the upper end of the moving plate is fixedly connected with the lower end of an electric pressing rod. After each processing is finished, the two moulds are reset under the action of the springs, so that materials in the moulds are taken out more conveniently, the condition of mould clamping is avoided, and the processing efficiency is further improved.

The invention relates to the technical field of fasteners, in particular to a threaded pulling nail and a preparation method and an installation method thereof. The thread drawing nail comprises a nail sleeve, a core rod, a forming sleeve, a lining and a mounting nut. The forming sleeve and the lining sleeve are arranged on the core rod in a sleeving manner; the nail sleeve and the mounting nut are screwed on the core rod; a threaded hole and a limiting hole are formed in the center of the nail sleeve; a nail sleeve locking shoulder is formed between the limiting hole and the threaded hole; the core rod comprises a clamping section, a first screw section, a second screw section, a limiting step section and a core rod head from top to bottom; external threads with the same shape are arranged on the peripheral surfaces of the first screw section and the second screw section, and a broken diameter groove is formed between the first screw section and the second screw section; the top surface of the head of the core rod is an inverted conical surface and forms a conical surface groove; a core rod stop shoulder is formed on the top surface of the limiting step section; the lower end of the forming sleeve abuts against the interior of the conical surface groove. After the blind rivet is riveted, the limiting step section can be inserted into the limiting hole, and the core rod locking shoulder and the rivet sleeve locking shoulder abut against each other to form limiting.

Method for joining components by means of a rivet and rivet (10) for a riveted connection, in particular self-piercing rivet, comprising: - a head (12) with a top surface (14), - a shaft (16) longitudinally extending along a longitudinal axis, - a transition portion (18) between the shaft and the head, wherein the rivet (10) is integrally made in a metal material and comprises a coating (B1, B2, B3) adapted to prevent corrosion of said rivet, and wherein at least one projection (20) is arranged on the top surface (14) of the head.

A fastening system includes a plurality of groups of fasteners. Each group includes a plurality of identical fasteners. Each fastener includes a fastener body and a coating applied to at least a portion of the fastener body. The coating includes a binder and a colorant. Each group of fasteners has a specific structural characteristic that differs between the groups, and each group of fasteners has a distinct color represented by a set of CIE Lab coordinates (L, a, b).

The invention discloses a manufacturing and self-heating riveting method of a thermoplastic composite material and metal mixed structure rivet. According to the method, firstly, a thermoplastic composite material and metal mixed rivet is designed, and a process and mold design for preparing the metal and thermoplastic composite material mixed structure rivet through a two-step mold pressing method are provided. The added metal in the prepared rivet has high electromagnetic induction heating capacity, and in the riveting process, the rivet is heated to the working temperature through induction current and then pressed to complete press riveting connection. By means of the technology, the weight of the metal rivet can be obviously reduced, rapid self-heating riveting can be achieved, in addition, composite material hole edge damage possibly caused by machining can be filled through heating and melting of the thermoplastic composite material, meanwhile, abrasion and electrochemical corrosion between the rivet and a plate are avoided, and the service life of the rivet is prolonged. And the sealing performance and the shock and vibration resistance of the riveted joint are improved. In addition, after riveting is completed, reliable pier heads formed at the two ends of the rivet improve the connecting strength and reliability, and the rivet is suitable for complex working conditions.

An installation tool for a self-tapping rivet fastener contains: a body, a movable sleeve, a handle, a single-direction thrust bearing, a switcher, a drive rod, a transmission shaft, a cap, a locking element, and a screw nut. The body includes multiple ribs, two protrusions, two slots, a circular orifice, a stepped fringe, a positioning orifice, a threaded section, and a connection groove. The movable sleeve moves on the body. The handle includes a hollowly circular fitting portion. The switcher includes a coupling portion, a connection flange, a defining hole, and a fitting hole. The drive rod includes a shank, a positioning fringe, and a fixing portion. The transmission shaft includes a threaded orifice, a connecting portion, and a shoulder. The cap is hollow. The locking element includes a threaded extension, a driving portion, and a threaded aperture. The screw nut includes a screwing section and a receiving orifice.

To provide multi-piece fasteners, multi-piece fastener installation apparatus, and methods of fastening.SOLUTION: A multi-piece fastener includes a fastening collar and a pin. The fastening collar includes a first collar end and a second collar end. A collar cavity extends from the first collar end to the second collar end. The pin is configured to be at least partially received in the collar cavity. The pin includes a first pin end, a second pin end, and a shank extending between the first pin end and the second pin end. The shank comprises a plurality of structural features. A first feature among the plurality of structural features has a first configuration, and a second feature among the plurality of structural features has a second configuration. The first configuration and the second configuration are different from each other.SELECTED DRAWING: Figure 3A

The utility model discloses a multifunctional self-puncturing connecting rivet, which is characterized in that a self-puncturing connecting riveting part used for being riveted with a plate in a self-locking manner is integrally formed on one side of a flange plate, and a connecting part used for being connected with a part in a matching manner is integrally formed on the other side of the flange plate, so that the rivet can be connected with the part while being riveted and fixed with the plate; a plurality of connecting pieces do not need to be arranged on the plate, so that the damage to the plate structure and the mounting cost are reduced, and the functionality of the rivet is improved; meanwhile, the rivet and the plate are made of the same material, and the strength of the rivet is higher than that of the plate, so that physical and mechanical characteristics such as thermal expansion coefficient, elastic modulus and yield strength between the rivet and the plate are similar, stress concentration caused by material difference is reduced, and the risk of cracks is reduced; therefore, the integrity, the stability and the reliability of connection are improved.

The invention relates to a ring groove rivet sleeve and a high-strength ring groove rivet for aerospace, the rivet sleeve comprises a bulged section, a connecting section and a locking section which are sequentially distributed in the axial direction, and the material strength of the bulged section and the locking section is smaller than that of the connecting section. According to the rivet sleeve, the bulged section, the connecting section and the locking section are sequentially distributed in the axial direction, the bulged section penetrates through the hole of the connected piece during riveting, the connecting section is located in the hole in the connected piece, the locking section abuts against the side face of the connected piece, the bulged section is bulged and deformed in the riveting process, and the locking section is located in the hole in the connected piece. Meanwhile, the locking section is extruded to deform and is filled into a thread groove in the rod part of the nail rod to realize locking; due to the fact that after riveting is completed, the rivet mainly bears shearing force through the connecting section, the material strength of the connecting section is set to be larger than that of the bulging section and the locking section, smooth deformation of the bulging section and the locking section can be guaranteed, meanwhile, the structural strength of the connecting section is improved, the connecting section has high shearing strength, and the service life of the rivet is prolonged. And the shear resistance of the rivet can be effectively improved.

The invention discloses a pull rivet connecting piece and a lantern ring preparation method and application thereof, the pull rivet connecting piece comprises a pull rivet and a lantern ring, and a preformed directional deformation protrusion is arranged on the cylinder wall of the lantern ring and located in a preset bulging deformation area. In the rivet pulling process, the directional deformation protrusion preferentially generates radial plastic deformation when being axially compressed, so that a drum-shaped locking structure which is accurate in position and uniform in shape is formed, and the lantern ring is integrally formed through a local plastic deformation process and can be prepared through an internal reaming method or an external die assembly extrusion method. According to the lantern ring, it can be ensured that radial plastic deformation is evenly spread in the circumferential direction of the lantern ring through the directional deformation protrusions designed through the pre-forming structure, controllability and predictability of the deformation process are greatly improved, consistency, reliability and convenience of pull-rivet connection are kept through the design, the tensile strength and the shear strength of connection are remarkably improved, and the service life of the lantern ring is prolonged. The method is suitable for occasions with high reliability requirements.

Insertable clamp, for the temporary assembly of structural parts, including a main tubular body extending along a longitudinal axis X and a bearing surface intended to contact a first face of the structural parts, an elastic clip capable of passing through drilled aligned holes, produced in said parts, the clip being moveable along the longitudinal axis, rotatable about said axis of a driver nut provided with a tapped bore cooperating with a threaded end of said clip, the clip comprising two branches having hooking spurs for contacting with a last face of the structural parts, said branches transversally and progressively moving apart along a spreader, between said branches and fixed in relation to the main body, when exposed to the recoil of the clip, the clamp further includes a compression spring inside the body and holding the threaded end engaged in the tapped bore so the clip remains aligned with the longitudinal axis.

The utility model discloses a rivet assembly, and belongs to the technical field of rivets. A rivet assembly comprises a first stand, a second stand and a third stand which are axially arranged in sequence. The second stand and the first stand are eccentrically arranged, and the end face of the first stand on the side, far away from the first stand, of the second stand is a bearing part. The side edge of the third stand is provided with at least one limiting cut edge. The end face of the second pillar and the third pillar at least form a limiting step at the position of the limiting cut edge. A mounting plate is arranged outside the third stand, and a rotation stopping hole matched with the outline of the third stand is formed in the surface of the mounting plate; the rotation stopping hole is provided with a rotation stopping cut edge matched with the limiting cut edge. The mounting plate is nested at the periphery of the third stand and is propped against the limiting step; an insertion cavity is formed between the mounting plate and the first stand; the plug-in cavity is nested outside an external fixing plate, and the end face of the fixing plate abuts against the bearing part. Eccentric arrangement can be achieved, the abutting contact area is increased, and the device is suitable for installation of steel plates with different thicknesses.

The invention discloses a prefabricated-hole-free connection method for a thermoplastic resin-based composite material and a metal material. A rivet tip end of a semi-hollow rivet is of a dip angle structure with an inclined inner cavity. Low-pressure penetration of the thermoplastic resin matrix composite upper-layer plate is achieved by means of high-speed rotation of the rivets, the bonding-riveting-welding prefabricated-hole-free composite connection technology is adopted, the problems of material damage, breakage, chipping and the like caused in the riveting process are solved, the sealing effect is achieved on a connection interface, and the corrosion resistance of a connection joint is improved.

A ball lock pin comprising a pin body with an inner accommodation and at least one locking ball accommodation; a blocking pin at least partly arranged in the inner accommodation and movable between a blocking position and a releasing position; at least one locking ball movably arranged in the at least one locking ball accommodation and biased into a locking position by the blocking pin, if the blocking pin is in the blocking position, wherein the at least one locking ball is released for moving into an unlocking position if the blocking pin is in the releasing position; a primary spring element arranged in the inner accommodation and biasing the blocking pin into the blocking position; and a redundant spring element arranged in the inner accommodation and biasing the blocking pin into the blocking position.

The utility model discloses a blind rivet cold heading forming device which comprises a main die head, a stamping die head and a radial tapping mechanism, and a plurality of rivet body forming grooves are formed in the main die head. A plurality of stamping die ejector rods are installed on the stamping die head, long through grooves are formed in the stamping die ejector rods, and the stamping die ejector rods are opposite to the rivet body forming grooves in position. Openings communicated with the rivet body forming groove are formed in the upper end and the lower end of the main die head, and the radial trepanning mechanism comprises an upper trepanning assembly and a lower trepanning assembly which are located at the upper opening and the lower opening of the main die head respectively; the upper punching assembly and the lower punching assembly are each provided with a strip-shaped punch and a punching air cylinder for driving the strip-shaped punch to stretch into the rivet body forming groove. The movable strip-shaped punches are arranged on the upper side and the lower side of the rivet body forming groove, the punching die ejector rod is provided with the through long groove, in the punching process of the punching die ejector rod, the strip-shaped punches are inserted into the long groove, the upper side and the lower side of the rivet body are perforated, the rivet body is formed at a time, machining steps of the rivet body are simplified, and production efficiency is improved.

The utility model discloses a self-piercing connecting rivet with a composite structure, which is characterized in that a self-piercing connecting riveting part used for being riveted with a plate in a self-locking manner is integrally formed on one side of a flange plate, and a connecting part used for being connected with a part in a matching manner is connected on the other side of the flange plate, so that the rivet can be connected with the part while being riveted and fixed with the plate; a plurality of connecting pieces do not need to be arranged on the plate, damage to the plate structure and the installation cost are reduced, the functionality of the rivet is improved, and meanwhile the connecting part and the self-puncturing connecting riveting part are made of different materials so that the performance of the rivet can be optimized.

The invention provides a slotless threaded blind rivet and a manufacturing method, and relates to the technical field of fasteners, the slotless threaded blind rivet comprises a core rod, a rivet body, a rivet sleeve and a driving piece, the core rod comprises a clamping part, a first rod section, a second rod section and a head protrusion, the first rod section is provided with a first external thread section, the second rod section is provided with a second external thread section, and the head protrusion is provided with a second external thread section; a neck breaking groove is formed between the first rod section and the second rod section, the core rod is sleeved with the rivet body, a first internal thread section and a second internal thread section are arranged in the rivet body, and the second internal thread section can limit the first external thread section in the axial direction of the core rod; the core rod is sleeved with the nail sleeve, and the driving piece is in threaded connection with the second external thread section. The first external thread section can be axially limited by the second internal thread section, so that the core rod cannot continuously move, at the moment, the neck breaking groove is broken, the broken position is approximately parallel to the end opening of the nail body, and the effect of accurately controlling the broken position is achieved.

A dissimilar-material joined body is obtained by fusion joining a steel material and a stud-equipped aluminum member obtained by attaching a steel stud member to an aluminum material. The stud member includes a head portion and a shaft portion. The shaft portion penetrates the aluminum material in a plate thickness direction, protrudes from the aluminum material, and is formed with, at a tip end of the protruding shaft portion. An expanded diameter portion expands radially outward. A back side surface of the head portion that faces the aluminum material is clinched to the aluminum material. The head portion and the steel material are fusion welded to each other with a gap having a desired interval formed between the aluminum material and the steel material.

To improve fastening strength in fastening with a fastener.SOLUTION: A fastener for fastening a member to be fastener has: a hollow rivet body 20 inserted into a hole 71 of a first member 70 and a hole 73 of a second member 72, and having a flange 22; a mandrel 30 inserted into the rivet body 20; and a metal washer 40 arranged at least one of an interval between a deformation part 24 of the rivet body 20 and the second member 72 and an interval between the flange 22 and the first member 70.SELECTED DRAWING: Figure 1