Abstract: A battery pack locking mechanism, used for unlocking or locking a battery pack on the bracket, and comprising a fixing portion. The fixing portion has a locking space. When the battery pack is placed relative to the bracket, the locking mechanism is used for locking a connecting portion on the battery pack in the locking space. On one side of the locking space, the locking mechanism is provided with an opening facing towards the battery pack and entering the bracket along the horizontal direction, so that the connecting portion enters the opening along the horizontal direction and moves into the locking space. According to the locking mechanism, effectively reducing the complexity of the process and the step of mounting and fixing the battery pack on the bracket. Also provided are a bracket assembly, an electric vehicle, and a battery pack locking method.

Abstract: A fastener structure includes a head portion, a body portion and an elastic element. The head portion has a shaft section, a press section and a hold-down section. The body portion has a corresponding press section, which is movably assembled to the press section. The elastic element has an end pressed against the press section and another end against the body section, allowing the head portion to move elastically. The body portion can be engaged with an object, and the hold-down section of the head portion can elastically hold down a workpiece against the object or be elastically removed from the workpiece, so as to complete the connection and disconnection of at least two objects to and from one another in a quick and repeatable manner.

Abstract: The first fastener comprises a post, a fifth outer boss, an outer slab, a first hole and a second inner flange. The fifth outer boss is provided in an upper portion of the post. The outer slab perpendicular to the post is provided in a lower portion of the post. The first hole is provided within a local region of the outer slab below the post. The second inner flange is provided on an inner wall of the first hole. The second inner flange has a first gap greater than a width of the fifth outer boss. The upper surface of the second inner flange is used for abutting on a lower surface of a fifth outer boss of a second fastener having a same structure as the first fastener when limiting a position of connected pieces in a height direction of the post. Two sections of the second inner flange and two sections of the first gap are provided on the inner wall of the first hole in a staggered manner. Each section of the second inner flange is equivalent to ¼ of a circumference of the inner wall of the first hole.

Abstract: Described herein is a pedicle screw for use in the thoracolumbar spine where the height can be adjusted intra-operatively before or after installation member of the longitudinal member. The pedicle screws with adjustable height may be made with a monoaxial or polyaxial configuration. The height of the pedicle screw can be lengthened or shortened.

Abstract: A lamp assembly and to a method for assembling the lamp assembly with a heat sink, a base plate for holding at least one light source, and a reflector. A light that can be generated by the light source can be directed into this reflector and wherein the heat sink has a mounting surface on which the base plate and the reflector are arranged one on top of the other. A common mounting opening extends through the heat sink, the base plate, and the reflector, wherein a spring element and a tension element are arranged in this opening and wherein the heat sink, the base plate, and the reflector are clamped one on top of the other with a clamping force by means of the spring element. The clamping force is applied on the spring element by means of the tension element.

Abstract: Procedure for the assembling between at least two panels, and a device associated thereto, where said procedure is carried out through at least a single operator or machine, and comprises the following steps: receiving at least two panels, where said panels comprise respectively at least one through hole; introducing an assembling device comprising a nut and a screw, through the respective hole of each panel; turning the device around the same side where it was introduced previously, in such a way that the nut and the screw rotate jointly, until the device comes into contact with at least one blocking element, and the joint movement of the nut with the screw is stopped; and next the nut and the screw are brought mutually closer together, in such a way that both panels are assembled.

Abstract: A single retainer is configured to securely retain a fastener and first and second limiting members. The retainer may include a main body, fastener-engaging members extending from the main body, and limiter-engaging members from the main body. The fastener-engaging members are configured to securely engage a portion of the fastener, and the limiter-engaging members are configured to securely engage portions of the first and second limiting members. The fastener-engaging members and the limiter-engaging members are configured to retain the fastener and the first and second limiting members.

Abstract: A system for applying rotational torque to a fastener on a fastening member (such as a threaded rod) to maintain the tight fastening. One specific embodiment of the system uses a recoil spring to apply such torque directly to the fastener; the system enables continued tightening of the fastener long after the initial fastening occurs.

Abstract: A fastening device for fastening a first component B1 to a second component B2, with automatic compensation of tolerances in the distance S between the first component B1 and the second component B2. The fastening device includes a holding element and an adjusting element. A carrying element is provided on the adjusting element, the carrying element having a ring which is spring-loaded in the axial direction of the adjusting element, and in which a carrying element includes a carrying element thread and an overcomeable carrying element thread blocking means.

Abstract: A quick-positioning captive screw includes a mounting base member having an outer thread spirally extending around the peripheral wall of a top flange thereof, the outer thread having a leading end terminating in the top edge of the top flange and a tail end terminating in the bottom edge of the top flange and cutting a part of the top flange into a rib, a lock screw having an inner thread located on the inside wall of a plastic cap thereof for threading through the outer thread into the space around the periphery of the mounting base member below the bottom edge of the top flange after bonding of the mounting base member to an external panel frame by reflow soldering, and a spring member sleeved onto the threaded shank of the screw bolt of the lock screw and stopped between the head of the screw bolt and the inside step of the mounting base member.

Abstract: A valve cover fastener includes a bolt including an elongated threaded rod and a bolt head. The rod has a bottom end and a top end. The bolt head is integrally coupled to the top end. A nut is threadably coupled to the rod such that the nut is positioned between the bolt head and the bottom end of the rod. The bottom end of the bolt may be extended through a valve cover and a gasket and threadably coupled to an engine block so that the nut abuts the gasket. A spring is positioned on the bolt. The spring has a generally frusto-conical shape. An upper end of the spring has a smaller diameter than the bolt head. The upper end abuts the bolt head and the lower end abuts the gasket such that the spring biases the gasket away from the bolt head.

Abstract: An alignment pin or fastener includes a radially eccentric part such that when the fastener is tightened, the eccentric part shifts radially to simultaneously align the holes of two plates in a radial direction and clamp the two plates together in an axial direction. The bi-directional fastener includes two heads at opposite ends of a shaft, wherein the two plates become sandwiched and clamped between the two heads. The shaft and the two heads remain fixed relative to each other, so turning one head turns the other. This allows the fastener to be tightened even when only one of the heads is accessible.

Abstract: A quarter turn fastener, for securing a plurality of members together, includes a blade member which has upturned corner portions defining sharp points for bitingly engaging the undersurface of the lowermost one of the plurality of members so as to prevent retrograde movement of the quarter turn fastener from the locked state back to the unlocked state. A quarter turn fastener assembly also comprises a stop member for engaging wall portions of another one of the members to be secured together such that rotation of the quarter turn fastener is limited to 90° arcuate extents either from the unlocked state to the locked state or from the locked state to the unlocked state.

Abstract: Production-induced tolerances in the assembly of components involve very high outlay if, after the assembly, these components have to be located in a certain position in relation to one another. The novel tolerance-compensation device is intended to render the position of the components adjustable in relation to one another, assembly also being simplified.

Abstract: A guide blade for steam turbines, having in the blade interior a cavity (18) to which a vacuum is applied, is provided with an opening (3) for drawing off fluid in the region of the trailing blade edge (4). This opening is provided with a porous cover (7). The cover is dimensioned in such a way that, during operation, all its capillaries are filled with the fluid to be drawn off. It is anchored in the guide blade by a mechanical fastening element (20).The mechanical fastening element (20) is a spring-loaded quick-acting lock and comprises a bush (21) which fixes the cover in the blade opening (3) and projects with its cylindrical part (24) into the blade cavity (18), and a pin (25) which is axially displaceable in the interior of the bush, is equipped with spring means (26) and is provided at its end with a cap (28), which rests on the inner wall of the blade.

Abstract: A fastener member having a head and a body portion with a plurality of arm members flexibly provided to compress a first member against a second member against the force of the fastener head to fasten the first and second members. The fastener member can secure articles or panels of different thicknesses as well as those of non-uniform thickness to other members or articles. A receiving socket is also provided to be used in conjunction with the fastener member.

Abstract: A stored energy torsional rotary fastener device providing ready releasable attachment of first and second components. A fastener housing, attached to the first component, includes a cylindrical socket having an upper open end and a lower end configured by a pair of base segments defining a cross-slot the parallel edges of which are formed with concentrically disposed arcuate cutouts. The segments have interior helical pitched ramp portions establishing an interrupted thread support. A rotor, including an axial stem terminating in a radial disc axially positioned in the socket, is rotatably biased by a coiled spring interconnecting the rotor and housing. The rotor disc is formed with a depending axial hub having its lower portion journalled in the slot cutouts. The hub upper end includes oppositely extending radial lugs, with each lug underface formed with a helical pitch adapted to mate with an associated ramp portion, enabling axial threaded rotor travel.

Abstract: A fastener is provided having a bolt releasably securable to a nut. The bolt includes a collar and resilient locking prongs with shoulders to anchor the bolt to a first member, such as a grommet or panel, and the nut has a nut body and resilient locking prongs with shoulders to anchor the nut to a second body, such as a second grommet or panel. A bolt shank having several curved channels open at one end and having locking slots at the other end is insertable into a cavity in the nut which has engagement lugs disposed therein. Rotation of either the nut or the bolt causes the engagement lugs to travel within the channels and engage the locking slots, thereby securing the nut to the bolt. Either a spring washer or resilient collar material can be used to apply a locking force to urge the nut and bolt in opposite directions to ensure that the lugs remain in the locking slots. Pressing the lug and nut together with an unlocking force greater than the locking force allows the nut and bolt to disengage.

Abstract: An expansion washer structure comprises first and second washer elements having projected ramp members which engage. The ramp members have sloped ramp and level segments adjacent to one another which are disposed to progressively engage as the washer elements are rotated with respect to each other. An internal spring is connected between the washer elements to urge them in one rotational direction when normal compressive force on the washer elements is released. When the washer elements are rotated relative to each other, their ramp members move progressively to different positions, causing the washer structure to increase in thickness.

Abstract: A one piece fastener which uses spring action to fasten parts together. The fastener has a body which is inserted into a drilled aperture in the parts. An enlarged head on one end of the body is too large to enter the aperture. A spring on the other end of the body is normally too large to enter the aperture but can be retracted to a size to pass through the aperture. A stud has its head connected to the spring and its opposite end in threaded engagement with an internally threaded passage extending through the body of the fastener. Turning of the stud by a special tool applies a torsional force to the spring which retracts it so that the fastener can be applied to or removed from the fastened parts. Alternative embodiments of the invention employ various types of multiple stage springs to enhance the fastening power.

Abstract: A device for bolting an article to a wall board, using a pre-drilled hole in the wall, is disclosed. The device comprises a volt, and an anchoring portion threadedly mounted to the bolt. This anchoring portion is resiliently deformable in one direction which allows it to pass one way through the hole and has a normal configuration wherein it grasps the inside surface of the wall board to hold the attached bolt against removal from the hole. The anchoring portion comprises a resilient, ribbon-like strip spirally wound into a cone-like configuration and resiliently held therein with inner and outer edge portions of the strip overlapping and in close mutual proximity. A nut for receiving the bolt is affixed to a first, inner end of the spirally wound strip and is held with its bore aligned with the central axis of the conical configuration. The anchor may be uncoiled when the turns of the spiraling strip are urged apart in one direction axially.

Abstract: A sealing device for pipe connectors discharging into a vessel includes a retaining ring having a flange and being disposed at the mouth of the pipe connector and tightly joined to the wall of the vessel. A rigid disk closes off the opening of the pipe connector. A seal is disposed between the rigid disk and the flange. Fast-action clamping elements extend through slits formed in the rigid disk and slits formed in the retaining ring. The fast-action clamping elements are supported on the disk and locked and braced on the retaining ring for securing the rigid disk to the flange with the interposition of the seal.

Abstract: A one piece fastener which uses spring action to fasten parts together. The fastener has a body which is inserted into a drilled aperture in the parts. An enlarged head on one end of the body is too large to enter the aperture. A spring on the other end of the body is normally too large to enter the aperture but can be retracted to a size to pass through the aperture. A stud has its head connected to the spring and its opposite end in threaded engagement with an internally threaded passage extending through the body of the fastener. Turning of the stud by a special tool applies a torsional force to the spring which retracts it so that the fastener can be applied to or removed from the fastened parts. Alternative embodiments of the invention employ various types of multiple stage springs to enhance the fastening power.

Abstract: A quick action fastener suitable for fastening panels or the like in face-to-face contact, including a pierce nut adapted to be secured within one of the panels and a male stud inserted through the other panel and into a through-hole in the nut. The nut includes a central, pilot portion which is diepunched through the panel and a pair of undercut grooves on opposites sides of the pilot portion, into which edges of the panel are deformed in order to securely hold the nut on the panel. The nut includes a locking element extending across the through-hole which is received within and contacts with a spiral cam slot in the stud upon partial rotation of the stud to lock the stud in the nut and thereby securely fasten the panels together. In one embodiment, the stud is axially biased from the locking element by a spring captured between the head of the stud and one of the panels while another embodiment employs a pair of wire loops forming a spring support for the locking element.

Abstract: An externally threaded fiber-reinforced plastic member comprising a shank and an integral thread on the exterior surface on the shank, in which a plurality of first strands are arranged substantially in parallel and extending longitudinally of the axis of said shank and a plurality of second strands are arranged substantially in parallel and substantially in perpendicular relation to said first strands has a unique interior structure in which most of the resin-impregnated fiber-filaments existing within the thread extending substantially in a plane including a cross-section of the threaded member are those extending continuously from and laterally of the shank into the thread. Such an externally threaded member having satisfactory mechanical strengths, and can be produced with high productivity and at low cost, utilizing the pultrusion technique, although the production method is not limited thereto.

Abstract: In a flight instrument having indicator assembly and heat generating electronics assembly, integral and thermally conductive structural supports are provided for each assembly. The assemblies are fastened together with shouldered screws such that there is some relative movement between the assemblies. The fastened assemblies are enclosed in a one piece housing, and the relationship between the structural supports and the housing facilitates heat transfer from the instrument.

Abstract: A fastener including an enlarged head portion and a reduced diameter shank portion extending from one end of the head portion. A cam slot is formed in the end of the shank distal from the head portion. The cam slot has a spiral configuration and the entrance end of the full width of the slot is widened to facilitate coupling and uncoupling of the fastener with a cam follower introduced to the cam slot for forming a fastener assembly.