2371results 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 joining system for mechanically joining two materials is disclosed. A receiving device having a sleeve which surrounds an axis of extension and which is designed to receive a pin, and a plug-in device having the pin, where the joining system is configured such that, when the pin is inserted in the sleeve, the pin is clamped to the sleeve in the axial direction in relation to the axis of extension on account of a spring element of the receiving device being pushed radially against a belly region of the pin.

An assembly includes a clip portion which includes a first flexible flange and a second flexible flange that each at least partially define a central retainer passage. A flexible hinge connects the clip portion to a structure. A tab is located adjacent an opposite end of the clip portion from the flexible hinge.

A drywall anchor and a method for installing the drywall anchor. The drywall anchor includes a drilling element at the front end of a base body for the introduction into a gypsum plaster board in a self-drilling manner and a non-circular region having a cross-section including at least three corners at the outer contour thereof. In particular, the non-circular region forms a prism.

A drilling and fixing device for hollow walls or panels comprising a front plate or stop 10 for resting on the panel surrounding and allowing access to the hole in which the device fits, a mounting body 20 forward of the plate and a pivoting arm 40 mounted on the body. The pivoting arm has a cutting surface on the forward part of the arm and is moveable from a rear position in the mounting body in which its axial direction is fixed to allow a hole to be drilled in the panel and a forward position in the mounting body in which position it can pivot to lie approximately horizontal to the panel when in use. The movement into the forward position and the pivoting of the arm can be brought about by the insertion of a screw through the front plate. The screw may engage the mounting body to pull it back, with the arm until the device is secure in the hole. The device may have two arms where the blades on the forward ends overlap when in the rear position to cooperate in the drilling process.

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.

The utility model discloses a motorcycle handlebar expansion screw and plug, which comprises a plug, an outer wedge, an inner wedge, a square nut and a bolt and is mounted on a handlebar. The outer wedge and the inner wedge are vertically and symmetrically attached to the inner hole wall of the handlebar in an inclined mode, the contact area is large, and the expansion screw is fixed to the handlebar more firmly through extrusion of the wedge-shaped structure formed by the diagonal planes. The bottom of the inner wedge is of various structures such as a single wedge table or a flat opposite wedge table or a vertical opposite wedge table, the manufacturing process can be simplified, use of various fit clearances can be met, and the bolt can be centered as much as possible. A bolt groove is formed in the plug, a limiting table is arranged on the bottom face of the plug, the plug can be better installed on a handlebar through an expansion screw, the plug can be matched with handlebars of more sizes by additionally arranging a limiting ring, and the fixing bolt and the handlebar can be better protected when a bicycle falls.

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.

Anchor Sleeve, Arrangement and Method of SecuringThe invention relates to an anchor sleeve for an injection system for securing of an anchor element in an opening in an article, especially in a borehole in masonry, wherein the anchor sleeve consists at least in sections of flexible permeable open-cell foam.

An attachment structure includes a cross bar body extending between a first end and a second end, a first mount coupled to the first end, and a second mount coupled to the second end. The first mount and the second mount each include at least one cleat that is selectively securable to a base plate that includes a plurality of mounting apertures.

A filter arrangement has a first body member with a first axial front surface and a first radial sealing surface, a second body member with a second axial front surface and a second radial sealing surface, a contact portion and an elastic contact element. The first and second body members complementarily couple together with a connecting device. In a coupled state, the contact portion and the elastic contact element are axially compressed between the first and second axial front surface. The second radial sealing surface has a groove housing a first sealing element. When brought into the coupled state, the first radial sealing surface at least partially covers the groove of the second radial sealing surface before the contact portion and elastic contact element are at least partially axially compressed between the first and second axial front surface. When coupled, the first radial sealing surface completely covering the groove.

Wet cladding methods are disclosed which allow for construction and concomitant cladding of back-up walls. The end-cladding elements are attached to the wall using undercut anchors which are inserted into holes on the back surface of the end-cladding elements.

A locking-mode-selectable lock bolt and nut device comprises a bolt and a nut, the main fastening nut is arranged on the bolt in a sleeving manner; the fixed locknut is arranged on the bolt in a sleeving manner and is positioned above the main fastening nut; wherein a bolt locking groove is formed in the outer wall of one side of the bolt in the length direction, the section of the bolt locking groove is triangular, an acute angle is formed by two side faces in the bolt locking groove, one side face is arranged in the radial direction of the bolt, and the other side face is an inclined face; mounting through holes are symmetrically formed in two opposite surfaces of the fixed locknut, and a screw hole, a round hole and a square hole are sequentially formed in each mounting through hole from outside to inside; the inner diameter of the round hole is larger than that of the screw hole, and the width of the square hole is smaller than that of the round hole. And the two locking assemblies are respectively inserted into the two mounting through holes of the fixed locknut.

Methods of concurrently constructing and cladding concrete walls are disclosed. Methods of securing undercut anchors into the back surface of end-cladding elements are further disclosed. Walls and structures generated thereby are also disclosed.

A female connector (30). The female connector (30) is configured to be fitted to a male connector (40), so as to connect a first article (10) to a second article (20). The female connector (30) comprises a main body portion (31) and a pair of wall portions. The main body portion (31) comprises a pair of side walls (311) spaced apart in the width direction, such that an insertion groove (310) allowing for insertion of an insertion portion (41) of the male connector (40) is defined between said side walls. The insertion portion (41) of the male connector (40) sequentially comprises, in the downward direction, an abutment portion (411) and a head portion (412). A pair of elastic walls (32) extend downward and inward respectively from the pair of side walls (311) to respectively form a pair of abutment ends (321) extending into the insertion groove (310). The pair of elastic walls (32) are configured to be capable of being elastically deformed outward when pressed by the head portion (412) inserted downward, such that the pair of abutment ends (321) allows the head portion (412) to pass therethrough and then can abut against the abutment portion (411) after the head portion (412) passes, so as to prevent the head portion (412) from being pulled out upward. The service life of the male connector (40) of a connecting device can be prolonged. Also provided are a male connector, a connecting device, an article, and an article assembly.

The utility model discloses an occlusion type expansion sleeve which comprises a cylindrical sleeve body formed by rolling a plate body, the upper portion of the sleeve body is provided with a long-strip-shaped notch penetrating through the top of the sleeve body, and the upper portion of the sleeve body is divided into a plurality of expansion parts through the long-strip-shaped notch. When the sleeve body is unfolded into a plate body, a first meshing tooth part and a second meshing tooth part are arranged on the two sides of the lower portion of the sleeve body respectively. When the plate body is rolled into the sleeve body, the first meshing tooth part and the second meshing tooth part are meshed and clamped; and barbs and stamping grooves are arranged on the sleeve body. By arranging the first meshing tooth part and the second meshing tooth part, the structural strength of the splicing position of the sleeve body can be improved, and the cracking risk of the splicing position of the sleeve body is reduced; by arranging the barbs, the friction force between the sleeve body and the mounting hole can be increased, the sleeve body is prevented from idling, meanwhile, the barbs can prevent the sleeve body from being separated from the mounting hole, and the fixing effect of the sleeve body is improved; and by forming the stamping groove, the structural strength of the expansion part can be improved, and the structural strength of the sleeve body can be improved.

A fastener assembly with workpiece clamping functionality. The fastener assembly, in one example, includes a collet body with a cantilever leg that extends from a crown and includes a foot that mates with a sleeve opening in a collet body sleeve and the collet body sleeve at least partially circumferentially enclosing the collet body. The fastener assembly further includes a workpiece sleeve configured to, in an assembled configuration, mate with the collet body sleeve and prevent rotation of the collet body sleeve and a stud configured to theadingly engage the collet body sleeve or the collet body.

Method for manufacturing a fastening element (10, 10'), method for using a fastening element (10, 10') and fastening element for gluing onto a workpiece (16), comprising: - at least one fastening section (12, 12'), and - a contact surface (14, 14') , wherein a permanent adhesive (24, 24') is applied to a first area (20) of the contact surface, and the contact surface also comprises a second area (22), different from the first area, wherein a fixation wax (26, 26') is applied on the second area (22), different from the first area and wherein an anti-tack coating (30) is applied to the fixation wax.

A blind hole mount fastener configured to retain an object to a support structure defining a bore. The fastener includes a stud portion configured to be received within the bore, a head portion configured to limit an insertion of the stud portion into the bore, and a clip member. The stud portion includes a proximal end and a distal end, with a longitudinal axis defined therebetween. The stud portion extends in a first direction from the proximal end to the distal end. The clip member attached to the stud portion orthogonally to the first direction. The head portion attaches to the stud portion proximal end. The stud portion includes a receiver to which the clip member attaches. The clip member configured to be received within the bore with the stud portion. The clip member defines an arcuate portion and at least one spring arm portion extending from the clip member.

A drywall anchor to be introduced into a gypsum plaster board in a self-drilling manner, and to a method for installing the drywall anchor. The drywall anchor comprises a base body and a drilling element. The drilling element comprises a drilling tip and a cutting element including a cutting bit as well as a hollow, crucible-shaped core bit, which is open toward the front and within which the cutting element is disposed, the cutting element protruding to the front beyond the bit.

The utility model relates to the technical field of rivets, in particular to an internal expansion fixed rivet which comprises an end cover, a circular plate is rotatably connected to the lower end of the end cover, a rod body is slidably connected to the interior of the end cover in a penetrating mode, the circular plate is rotatably connected with the rod body in a penetrating and threaded mode, an annular groove is formed in the side wall of the rod body, and a locking block is rotatably connected to the end of the rod body. The side wall of the lower end of the locking block is obliquely arranged; a plurality of expansion blocks are distributed at the upper end of the base in an annular array mode. An operator slides the locking block, the expansion blocks and the base into a drilled hole formed in advance, the protruding block is manually rotated to enable the circular plate to rotate, the rod body drives the locking block to slide, the multiple expansion blocks are expanded to enable the expansion blocks to deform, and therefore an object is fixed to a designated position, and after the expansion blocks completely deform, the rod body is disconnected from the annular groove, and the object is fixed. And the redundant rod body part is removed, so that the rivet can be conveniently mounted, and meanwhile, the rivet can be mounted without using other tools.

There is a self-tapping curtain rod bracket with spaced prongs terminating with tips. The tips and prongs are used to penetrate and create holes in a wall. They extend through the holes and engage the backside of the wall. A wall support extends from the spaced prongs along the frontside of the wall to provide support. An arm extends away from the wall and has a cradle to support a curtain rod. The wall support also has an arm support, and the spaced prongs also includes a mount support. The mount support being located between the arm support and the arm.

A part unit and a vehicle body assembly structure are disclosed. In particular, a part unit and a vehicle body assembly structure with improved workability of assembling parts into a vehicle body of a curved surface are disclosed.

Herein is described a fixing of unitary construction for securing an article to a surface, comprising; a coupling arrangement (104), for coupling the article to the fixing, wherein the fixing comprises barbs (114) which increase the friction between the fixing and the hole; and an elongate member (106) extending from the coupling arrangement; the elongate member comprising a bend (108) which is located substantially midway along the length of the elongate member, the bend defining a first portion (110) and second portion (112) of the elongate member; wherein the first and second portions are resiliently biased away from each other, and the first portion extends between the coupling arrangement and the bend, and the second portion extends towards the coupling arrangement from the bend, forming a gap suitable for the article, between the second portion and the coupling arrangement; wherein the gap size is adjusted by varying the distance between the first and second portions of the elongate member.

The utility model provides an adjustable photovoltaic panel pressing block assembly which is applied to the field of photovoltaic cell panel installation. Comprising a clamping block which is clamped on a corresponding supporting guide rail, and a threaded hole is formed in the center of the top of the clamping block; the pressing block comprises a pressing block main body, a limiting convex edge is arranged on at least one side of the pressing block main body, and a smooth through hole is formed in the center of the pressing block; the locking structure comprises a locking bolt and a spring, the locking bolt is used for fastening the clamping block and the pressing block, the spring is arranged between the clamping block and the pressing block and arranged on the locking bolt in a sleeving mode, and the locking bolt penetrates through the smooth through hole, then is in threaded connection with the threaded hole and extrudes the spring, so that the limiting protruding edge and the supporting guide rail are pressed oppositely. And the photovoltaic panel is further fixedly arranged between the limiting convex edge and the supporting guide rail. The clamping phenomenon of the locking bolt and the pressing block can be prevented, under the limiting effect of the spring, the photovoltaic panel can be conveniently placed between the limiting convex edge and the supporting guide rail, and installation is more convenient.

A grommet (20) includes a tubular portion (21). The tubular portion extends along a first direction (DR1), and has a tip end (21a) and a base end (21b) located opposite to the tip end in the first direction. The tubular portion is provided with a through hole (21c) extending in the first direction and opening at the tip end and the base end of the tubular portion. When the tubular portion is viewed from the tip end along the first direction, a first opening edge (21d) has a first portion (21da), the first opening edge being an opening edge of the through hole at the tip end of the tubular portion. The first portion has a first end and a second end, the first end being an intersection point of a first line (L1) and the first opening edge, the first line passing through a center (C) of the through hole and along a second direction (DR2) orthogonal to the first direction, the second end being an intersection point of a second line (L2) and the first opening edge, the second line passing through the center of the through hole and along a third direction (DR3) orthogonal to the first direction and the second direction.

A fastening device (2) for fixing to a through-hole (4) of a wall element (6) has a plug-in section (10) extending axially between a front end (14) and a rear end (16), a depth stop (18) arranged at the rear end (16) of the plug-in section (10), fasteners (20) held at the front end (14) of the plug-in section (10) which are adjustable between a starting position in which they have a first radial maximum extension (E1) and a mounting position in which they have a second radial maximum extension (E2) that is reduced compared to the first radial maximum extension (E1), and an actuator (34) extending axially over the plug-in section (10) which is adjustable between a mounting position in which the fasteners (20) are moved to the starting position and a plug-in position in which the fasteners (20) are moved to the mounting position.The actuator (34) is adjustable and has a handle (26) for applying a manual actuating force (D) at a mounting end (24) projecting from the depth stop (18). The actuating element (34) is provided to be slidably held relative to the plug-in section (10) between the plug-in position and the fixed position and is pre-tensioned in the fixed position.

A wall mounting apparatus and a method of manufacturing portions thereof. The wall mounting apparatus includes an article having a rear surface with at least one recess, a mounting component having a front surface with a mounting channel, a rear surface, and a peripheral surface, and a mounting bracket. The mounting component is positioned in the recess of the article with the rear surface of the mounting component facing the floor of the recess and bonded to the article with a bonding agent disposed between the peripheral surface of the mounting component and the sidewall of the recess of the article. The article is mounted to the wall via sliding engagement between the article and the mounting bracket while the mounting bracket is mounted to the wall and at least partially located within the mounting channel of the mounting component.

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.