401results about "Dowels" patented technology

Expansion anchor having an anchor bolt having a threaded zone for introducing tensile load into the anchor bolt, and an expansion sleeve surrounding the anchor bolt, wherein the anchor bolt has an expansion body located in a front region of the anchor bolt, wherein the expansion body has a converging zone for expanding the expansion sleeve, wherein the anchor bolt further has a flange that provides an abutment for the expansion sleeve, wherein the flange is arranged between the expansion body and the threaded zone, wherein the anchor bolt further has a neck that is arranged between the expansion body and the flange, and which adjoins both the expansion body and the flange, wherein the expansion sleeve surrounds the neck of the anchor bolt, characterized in that the following holds for the cross-sectional area At of the threaded zone and for the cross-sectional area An of the neck: (At / An) ≤ 1.3.

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 fastener structure includes a rotating fastener body and a main body, the main body and the rotating fastener body are linked with each other by an anti-rotation portion. Through the structural design of the anti-rotation portion, the fastening stability can be greatly improved. Further, each component may also vary the structural configuration. A method of using the fastener structure is also introduced.

The utility model relates to the technical field of anchor bolts, and particularly discloses a plastic anchor bolt special for maintenance of an outer wall thermal insulation layer, the plastic anchor bolt comprises a metal screw and a plastic expansion sleeve, and a plastic disc is arranged at the top of the plastic expansion sleeve; a cavity for accommodating the metal screw is formed in the plastic expansion sleeve; the upper portion of the plastic expansion sleeve is a sleeve, the lower portion of the plastic expansion sleeve is an anchoring end, a glue injection hole communicated with the cavity is formed in the sleeve, and a glue injection sealing film is arranged between the glue injection hole and the anchoring end. Due to the expansion gap formed in the middle of the anchoring end and the protrusions and the recesses in the outer wall, after the anchor bolt is installed, the anchor bolt can be better meshed with a base material, the anchoring strength is improved, and the anti-drawing performance of the anchor bolt is improved. The glue injection sealing film is arranged between the glue injection hole and the anchoring end, so that glue liquid can be prevented from leaking to other places during glue injection, and the glue injection pressure and the glue liquid are ensured to reach required places only through the glue injection hole; and after glue injection, the reinforcing effect of the anchor bolts on the thermal insulation layer is further enhanced.

The utility model discloses a locking mechanism, a stamping storage battery bolt, a storage battery and a motor vehicle. The locking mechanism comprises a connecting piece and a locking hole formed in the connecting piece, a first clamping arm and a second clamping arm are arranged, and an abutting piece is installed between a bolt and the first clamping arm and between the bolt and the second clamping arm; an elastic piece used for keeping the separation trend of the bolt and the abutting piece is arranged between the head of the bolt and the abutting piece. The bolt sequentially penetrates through the elastic piece, the second channel and the first channel and is matched with the nut to be installed on the first clamping arm and the second clamping arm. The technical scheme has the advantages that the elastic piece is arranged between the head of the bolt and the abutting piece, the bolt and the abutting piece are normally separated by providing elastic force, so that rotation of the nut in a natural state cannot drive the locking mechanism to act, misoperation is prevented, and the locking mechanism can be locked only after the elastic force is overcome to enable the bolt to abut against the abutting piece. Locking can be effectively driven through rotation of the nut, and therefore reliable separation of a safe state and a working state is achieved.

To provide a come-off prevention tool for a one-side bolt that eliminates the need of processing of a material to be fastened and has excellent versatility.SOLUTION: A come-off prevention tool for a one-side bolt includes: a sleeve attachment member to be attached to a sleeve head; and a bolt attachment member to be attached to a bolt head. The sleeve attachment member includes: a top plate part facing a top surface of a sleeve head; a side plate part extending along a side surface of the sleeve head from the top plate part and regulating relative rotation between a sleeve and the sleeve attachment member relative to a central axis of a bolt; and a projection piece extending in a direction different from the extension direction of the side plate part from the top plate part. The bolt attachment member includes: a fitting hole fitted to the bolt head and regulating relative rotation between the bolt and the bolt attachment member relative to the central axis; and an insertion hole through which the projection piece of the sleeve attachment member is inserted.SELECTED DRAWING: Figure 5

The invention relates to an insulation anchor (1) for attaching a component to an insulation system. The insulation anchor (1) comprises a base body (6) with a screw channel (7) and, at the rear end of the base body (6), a flange (9) projecting radially outwards beyond the base body (6) in relation to a longitudinal axis (8) of the insulation anchor (1). A screw can be screwed into the insulation anchor (1) via the screw channel (7), thereby attaching the component to the insulation anchor (1). Furthermore, at least one recess (13) is provided in the flange (9), which locally reduces the thickness (12) of the flange (9) measured in the direction of the longitudinal axis (8). The flange recess (13) has a diameter (14) that is smaller than the diameter (15) of the screw channel (7), so that a screw can be screwed into the flange recess (13) when the screw channel (7) is not in the area of ​​a mounting opening of the attachment.

The invention relates to a dowel (1) for anchoring in aerated concrete, which has a sleeve-like hollow shaft (2) extending longitudinally along a longitudinal axis (5) from a rear end (3) to a front end (4). The hollow shaft (2) has a longitudinally extending screw channel (6) into which a screw can be screwed from the rear end (3) to fasten an attachment to the dowel (1). According to the invention, a distance (14) measured in the direction of the longitudinal axis (5) from a rear end (3) of the hollow shaft (2) to a rear end (13) of a slot (10) that weakens the hollow shaft (2) is less than or equal to the distance (16) measured in the direction of the longitudinal axis (5) from the rear end (3) of the hollow shaft (2) to a rear end (15) of an external thread (7) arranged on the hollow shaft (2).

This utility model relates to the field of building auxiliary materials, and in particular to an anchor bolt for fixing the thermal insulation layer of existing building exterior walls. It includes an anchor plate, an anchor bolt sleeve, a mixing body, an auxiliary nail core, and a sleeve head. The anchor bolt sleeve is provided with multiple barbs. The sleeve head includes a solvent chamber and a spraying part coaxially connected. The solvent chamber contains two cavities separated by multiple PVE elastic films, each containing an epoxy resin base and an epoxy resin curing agent. The auxiliary nail core drives the mixing body to rotate, ensuring thorough mixing of the epoxy resin base and curing agent. The mixed epoxy resin flows out through the spraying part, filling the gap between the anchor bolt and the wall. After the epoxy resin cures, the anchor bolt and the wall become integrated, achieving the effect of fixing the thermal insulation board.

A sock anchor installation system (10) and method of installation, where the sock anchor installation system includes an elongate tension member (14), a textile sleeve (12) arranged to envelop the elongate tension member; and an elongate hollow tube (32) attachable to one end (34) of an injection mechanism, which is configured to be filled with and to eject cementitious material into a preformed cavity (16). The textile sleeve (12) is configured to be received over the elongate hollow tube (32) and the elongate tension member (14) is configured to be inserted into the elongate hollow tube (32) for installation into the cavity (16). The method involves installing the elongate tension member (14), the textile sleeve (12) and the elongate hollow tube (32) as a unit into the preformed cavity (16). Cpon injection of cementitious material into the cavity (16) the elongate tension member (14) and the textile sleeve (12) are simultaneously released from the hollow tube (32) into the preformed cavity (16).

A blind hole mount fastener (100) configured to retain an object (190) to a support structure (192) defining a bore (194). The fastener (100) includes a stud portion (112) configured to be received within the bore (194), a head portion (110) configured to limit an insertion of the stud portion (112) into the bore (194), and a clip member (150). The stud portion (112) includes a proximal end (114) and a distal end (116), with a longitudinal axis (L) defined therebetween. The stud portion (112) extends in a first direction from the proximal end (114) to the distal end (116). The clip member (150) attached to the stud portion (112) orthogonally to the first direction. The head portion (110) attaches to the stud portion (112) proximal end (114). The stud portion (112) includes a receiver (126) to which the clip member (150) attaches. The clip member (150) configured to be received within the bore (194) with the stud portion (112). The clip member (150) defines an arcuate portion (248) and at least one spring arm portion (180,182) extending from the clip member (150).

The utility model belongs to the technical field of expansion studs, and particularly relates to a welding type cylindrical head stud which comprises a screw, a nut is rotationally connected to the circumferential face of the screw, a gasket is rotationally connected to the circumferential face of the screw, and an expansion device is arranged on the outer surface of the screw. The expansion device comprises a round pipe, the round pipe is arranged on the outer circumferential face of the screw, a sliding groove is formed in the inner wall of the round pipe, and the inner wall of the sliding groove is fixedly connected with one end of a spring. Through the arrangement of the expansion device, the connecting plate is opened to complete expansion of the bolt, the stud is applied to wider fields, the bolt can be conveniently fixed to a wall through the application of the conical column, meanwhile, the use performance of the stud is improved, subsequent use of the stud is facilitated, and the stud is convenient to use. The problems that a connecting plate cannot be opened to complete expansion of a screw, so that the screw cannot be fixed in an internal hole of a wall, and the screw is prone to loosening are solved.

This invention provides a replaceable anchor bolt structure without a bottom nut, relating to the field of building construction technology. It addresses the technical problem that current anchor bolts are fixed at the bottom with nuts, making removal and replacement difficult after concrete pouring. Furthermore, it poses a significant risk of property damage due to the inability to disassemble and install new anchor bolts. The device includes an upper anchor plate and a lower anchor plate located below it. Multiple anchor bolts are connected to the upper and lower anchor plates. Each anchor bolt includes a main body and a first connecting section and a second connecting section located at both ends of the main body. A protective structure is provided around the outer periphery of the main body. The first connecting section extends from the upper anchor plate and is fixed by fasteners. The lower anchor plate has a receiving structure, within which a connecting structure is located. The second connecting section is located within the receiving structure and detachably connected to the connecting structure. This invention improves upon the difficulty of anchor bolt removal and replacement.

The invention relates to a system for fastening rails (S) on a substrate (2) and to an assembly (1) built on such a system. The system comprises a slab element (3) having through openings (21, 22) leading from its upper face (14) to its bottom face (20) and comprising anchoring elements (4, 5) having anchoring element bodies (27) which, in use, are inserted into the substrate (2) and having an insertion opening defined by an end section (28) of the anchoring element body (27) for introducing a fastening element (11, 12) into the anchoring element body (27). According to the invention, a retaining section (29) laterally protruding from the end section (28) is connected to the end section (28) of the anchoring element body (27) by a connecting section (30-33) provided with a predetermined breaking point. On the bottom face (20) of the slab element (3), a retaining portion (38, 39) is provided into which the through openings (21, 22) of the slab element (3) open and into which the anchoring elements (4, 5) are retained by their retaining sections (29). The retaining portion (38, 39) forms a stop (48) for the retaining sections (29) acting in the longitudinal direction of the anchoring elements (4, 5). The inner contour of the through openings (21, 22) of the slab element (3) here adapts to the outer contour of the anchoring element bodies (27) in such a way that, after breaking of the connecting sections (30-33) of the anchoring elements (4, 5), the anchoring element bodies (27) can be moved through the through openings (21, 22) of the slab element (3).

A fixing bolt (1) for fixing in a wall (2), wherein the back of the wall (2) forms an inaccessi¬ ble space, for example in a tubular mast (5), and wherein the fixing bolt (1) has a centre axis (12) and a first portion (8), and wherein a locking body (24) is at least rotatably or displaceably connected to the first portion (8) of the fixing bolt (1) as the first portion (8) of the fixing bolt (1) and the locking body (24) are arranged to be inserted into a bore (38) in the wall (2), and wherein the locking body (24) is rotated by means of gravity into an active position, in which the locking body (24) projects diametrically from the fixing bolt (1) on two opposite sides, and wherein the locking body (24), in its active position, is ar- ranged to come into abutment against the inside (36) of the wall (2), and wherein the locking body (24) is at least rotatable or displaceable around a transverse portion (22), and wherein the transverse portion (22) is formed from and is integral with the material of the fixing bolt (1).

Method and means of manufacturing ties, fasteners and rods (15) having a plurality of longitudinal threads by forcing a coil of roll-profiled feed-wire made of steel (11) through a twisting-die made of plastic (1). Also described is: a twisting-die made of plastic (1) that is suitable for twisting profiled feed-wire (11) made of steel; a method of forming a plastic twisting die (1) using an axially driven tap (31) in the form of a twisted rod (15); and a helically-shaped member (15) having lead measurements (X) along the length of the helical thread that vary less than pitch measurements (Y) along the lengths of the helical threads.

A method of making an expansion anchor comprising the steps of: providing a metal rod having a thread along at least part of its outer surface; cutting the metal rod to obtain a required length of metal rod; welding an expansion section to an end of the obtained length of metal rod; and providing an expansion sleeve which in use interacts with the expansion section for increasing the expansion sleeve diameter; wherein the expansion section is integral with a spacer section and the step of welding involves welding an end of the spacer section to the threaded rod. An expansion anchor comprising a threaded rod part, an expansion section welded to an end of the rod part and an expansion sleeve which in use interacts with the expansion section for increasing the diameter of the expansion sleeve, wherein the expansion section is integral with a spacer section and an end of the spacer section is welded to the threaded rod part.

The utility model belongs to the equipment field of mining oil from well, especially, a kind of bolt anchoring device is provided.In the expansion sleeve is together with the rusted embedded part, to facilitate the replacement of expansion sleeve and other components, the utility model provides a kind of bolt anchoring device.Bolt anchoring device includes expansion bolt structure, expansion bolt structure includes expansion sleeve, expansion head, the core rod with threaded section and nut, expansion sleeve is equipped with the opening slit for facilitating expansion sleeve to expand, expansion sleeve outer wall surface is equipped with the insertion slot for being inserted between expansion sleeve and embedded part between insertion rod.In the replacement of bolt anchoring device, can first pry bar etc.insert rod be inserted between expansion sleeve and embedded part by insertion slot, then, expansion sleeve is inwards pressed using insertion rod, to make expansion sleeve deformation shrink, so that expansion sleeve and the rusted place of embedded part are separated, again, expansion sleeve, expansion head and other components are removed, and new bolt anchoring device can be replaced.

In one described embodiment, a coupling device 300 is disclosed that includes a connector 100 and a key assembly 200. The connector 300 comprises a resiliently displaceable mechanism 110 arranged to be inserted into an aligned recess of the assembly 602, 604 and operable to flex outwardly in response to a force generated by the key assembly 200 and to return to its normal unflexed state in the absence of the force.

A grommet having a body including a longitudinal axis and a channel therein. The grommet further includes a neck ring and an outer prong. The neck ring extends from the body and away from the longitudinal axis. The outer prong extends circumferentially around the body. A plurality of openings extend through the body and the outer prong on several diametrically opposed sides. The grommet is configured to be attached within a slot of a component in any orientation.

The invention relates to a dowel (1) for anchoring in aerated concrete, which has a sleeve-like hollow shaft (2) extending longitudinally along a longitudinal axis (5) from a rear end (3) to a front end (4). The hollow shaft (2) has a longitudinally extending screw channel (6) into which a screw can be screwed from the rear end (3) to fasten an attachment to the dowel (1). According to the invention, a distance (14) measured in the direction of the longitudinal axis (5) from a rear end (3) of the hollow shaft (2) to a rear end (13) of a slot (10) that weakens the hollow shaft (2) is less than or equal to the distance (16) measured in the direction of the longitudinal axis (5) from the rear end (3) of the hollow shaft (2) to a rear end (15) of an external thread (7) arranged on the hollow shaft (2).

The utility model provides a high strength corrosion -resistant stainless steel fastener belongs to fastener technical field technical field, including main screw rod, the hard tube is embedded in main screw rod middle part, the hexagonal main nut is fixedly connected with the top of main screw rod, is equipped with the main thread hole in the middle part of hard tube, has the vice screw rod to be connected with screw in main thread hole, the plastic expansion cylinder is equipped with in the flat head bottom of vice screw rod, is equipped with the split mouth in the top four corners of plastic expansion cylinder, is equipped with semicircle extruding head in the bottom of vice screw rod, is equipped with a plurality of recesses in the lateral wall of plastic expansion cylinder, is equipped with a plurality of anti -skid convexo -concave of distributing in the middle part of plastic expansion cylinder outer wall, is equipped with the connecting hole in the bottom of plastic expansion cylinder, the bottom end of vice screw rod is connected in the connecting hole, the utility model provides a high strength corrosion -resistant stainless steel fastener, installs into the sealed hole through PVE sealing cap, seals the place of hexagonal boss and main thread hole, avoids the rainwater to produce the corrosion in main thread hole.

The invention relates to an expansion anchor comprising an anchor bolt and an expansion sleeve surrounding the anchor bolt, an expansion body arranged on the anchor bolt for the expansion sleeve, the expansion body being arranged at least partially in front of the expansion sleeve, the expansion sleeve has a first annular groove on its outer face in the front region of the expansion sleeve, the first annular groove having a front side and a rear side. According to the invention, in at least one radial plane, the following conditions are adapted for the width w61: w61gt of the rear side of the first annular groove; 0.6 * d60 / tan [alpha] max, where d60 is the depth of the first annular groove in the at least one radial plane, and [alpha] max is the maximum angle of inclination of the expansion body in the at least one radial plane.

An expansion bolt assembly, by setting a separation groove and a convex rib on the expansion end of the expansion bolt, when the screw is tightened, one end of the screw presses the convex rib, so that the expansion part is supported away from the axis of the expansion groove under the action of the convex rib, thereby realizing the fixing effect of the expansion bolt. This design not only improves the fixing stability of the expansion bolt, but also makes the expansion bolt more evenly disperse the pressure when stressed, avoiding damage caused by excessive local stress.

The utility model discloses a die corner locking bolt device with a novel structure. The die corner locking bolt device comprises a mounting plate, a female cone, a fastening bolt, a spring and a hexagonal bolt head, the fastening bolt is connected with the mounting plate through a spring, can rotate around the female cone and is kept horizontal under the action of spring force; the hexagonal bolt head is movably connected with the fastening bolt through the spring pin. According to the utility model, not only can the closing function of the side plate at the end of the mold be realized, but also the fastening bolt can be kept horizontal and the robot can be aligned with the fastening bolt when the robot fastens the corner bolt.

A locking system including a locking washer, a nut, and a retainer that together serve to secure a wheel hub to a spindle. The locking washer has a tab that extends through the nut and the retainer and that surrounds and is positioned rearward on the retainer so as to secure the retainer both axially and rotationally. The tab has an initial position corresponding to an unlocked position, and a distal end of the tab extends beyond the wheel hub far enough in the initial position to prevent a cap from being set on the tab when the tab is in the initial position. Thus, the cap cannot be installed until the tab is bent to a locked condition.