1195results 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 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 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 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 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.

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.

A fastening system comprising a fastener and a cage and a sealing element. The fastener is enclosed and held by the cage. The sealing element arranged so that using the fastener places the sealing element in a sealing area between the cage and the fastener.

The invention discloses a continuous fiber structural part comprising an embedded connecting piece and a manufacturing method of the continuous fiber structural part, and belongs to the technical field of additive manufacturing. A plurality of embedded parts and locking bolts are arranged in the fiber structural part; through holes are formed in the embedded parts, the outer end faces of the through holes are flush with one end of the fiber structural part, the locking bolts are inserted into the through holes from the inner end faces of the through holes, and one locking bolt is in threaded connection with one embedded part; according to the structure, the connecting piece for additive manufacturing is pre-buried in the continuous fiber additive manufacturing forming printing process, meanwhile, the reverse locking bolt is installed to conduct fiber coating on the connecting piece, the mechanical property of connection between the pre-buried connecting piece and a component is improved, and meanwhile, the mechanical connection mode of a traditional composite material structural piece is replaced.

The present invention relates to the technical field of gas pipeline fixing, and more specifically, to an auxiliary bracket for fixing gas pipelines, comprising a base, a connecting head and a group of clamps, wherein a rubber strip is provided on the inner wall of the clamp, the connecting head is provided on the base, a group of the clamps are symmetrically and movably provided on the connecting head, and a plurality of limit nails are symmetrically provided on the base, and the auxiliary bracket further comprises: an adjustment module, which is provided on the base and connected to the clamp, and is used to adjust the position of the clamp; and a limit module, which is provided on the base, and the adjustment module controls the operation of the limit module when working, and the limit module is used to fix the limit nails on the wall; there is no need for staff to fix the pipeline and the device itself separately, which shortens the installation time of the gas pipeline. Compared with traditional auxiliary brackets, the present invention is more stable and is not prone to separation between the bracket itself and the wall.

The invention relates to a composite anchor cartridge (1) comprising (1) a first container (2) with a first interior (3) containing a reactive resin (6) with ethylene unsaturated groups; and (ii) a second container (4) with a second interior (5) containing a particulate hardener (7); wherein the hardener (7) comprises dibenzoyl peroxide phlegmatized with ethylene glycol dibenzoate, and wherein the dibenzoyl peroxide content is less than 50.0 wt.%, preferably at most 49.4 wt.%, based on the total weight of the hardener (7).

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 discloses an expansion pipe which comprises an expansion knotting part, a retraction middle part and an expansion head part which are sequentially arranged along the length direction of the expansion pipe, the expansion knotting part comprises an expansion pipe wall and two slender openings which are symmetrically formed in the pipe wall in the length direction of the expansion pipe and penetrate through the pipe wall, and anti-rotation outer teeth are arranged on the side edge, close to one of the slender openings, of the expansion pipe wall; the retraction middle part consists of an expansion pipe wall and a plurality of annular grooves which are distributed on the pipe outer wall at intervals along the length direction of the expansion pipe; the opening head is composed of four opening petals which are evenly distributed in the circumferential direction of the expansion pipe at intervals. According to the expansion pipe, the expansion stress is more uniform, the pipe wall is prevented from rotating during expansion and knotting, and the machining procedure is simple.

A clip is attached such that a leg portion protruding downward from a head portion is inserted into a cylindrical insertion hole of an attachment-target member. The clip has a plurality of engagement protrusions protruding from the leg portion and arranged in an insertion direction. The engagement protrusions have engagement corners sharpened to have a corner radius less than 0.2 mm. At the time of insertion into the insertion hole, the engagement corners slide on an inner circumferential wall surface while the engagement protrusions are elastically deformed. After the insertion, the engagement protrusions are elastically restored to dig into the inner circumferential wall surface, thereby preventing the clip from coming off from the insertion hole.

A sealing plug for blind hole, one-sided installation includes a stem head having a first end and an opposing second end, where the stem head includes a lip member disposed at the first end and having a first diameter, a skirt member disposed at the second end and have a second diameter that is less than the first diameter, and a first tapered portion disposed between the lip member and the skirt member and having a third diameter, a fourth diameter, and a first sloped portion therebetween. The stem head may also include a second tapered portion between the first tapered portion and the skirt member. The second tapered portion may have a fifth diameter, a sixth diameter, and a second sloped portion therebetween. The stem head may also include a waist member between the second tapered portion and the skirt member, the waist member having a seventh diameter.

A nut retainer assembly for a blind fastener system, includes: a nut retainer aligned along a longitudinal axis, the nut retainer comprising: i) an interior cavity for securely holding a fastener nut therein; ii) an opening for receiving a fastener therethrough; and iii) a threaded retainer coupling portion; and a swageable base or swageable base assembly, the swageable base or swageable base assembly being aligned along the longitudinal axis, the swageable base or swageable base assembly comprising: i) a swageable section; ii) a radial flange extending outwardly from the swageable section; and iii) a threaded base coupling portion for engaging with the threaded retainer coupling portion.

The utility model relates to the technical field of photovoltaic supports, and discloses a flexible support fixing member, a flexible photovoltaic support and a flexible photovoltaic support system, and the flexible support fixing member mainly comprises a hanging ring main body, a first fixing assembly and a second fixing assembly. The hanging ring body is provided with an opening and two opposite end portions, the first fixing assembly comprises a first limiting portion and a first connecting portion, at least part of the first limiting portion is located in the opening, and the first connecting portion is responsible for being connected with a supporting structure. The second fixing assembly is connected with the first limiting part and the two ends of the hanging ring body, the second fixing assembly, the hanging ring body and the first limiting part jointly form a first installation space, the first installation space is used for installing a cable structure, the installation flexibility of the support can be improved, and the stability and the installation efficiency of the photovoltaic support are effectively optimized.

A display system includes: a first upright oriented vertically; a second upright oriented vertically and offset horizontally from the first upright by a frame separation distance, the first upright and the second upright each having a plurality of openings therein and together defining a display opening therebetween; a first fastener attached to a display panel and inserted into one of the plurality of openings in the first upright; and a second fastener attached to the display panel and inserted into one of the plurality of openings in the second upright, each of the first fastener and the second fastener comprising a first portion and a second portion, the first portion having a first stud and a second stud, the second portion having an opening for receiving the first stud, the first stud configured to be inserted through a display panel and secured in the opening, the second stud configured to be inserted into one of the plurality of holes in the first upright or second upright, whereby the first and second fasteners hold the display panel in the display opening.

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.

A trophy assembly comprises a trophy base (38), a connector piece (20), at least one decorative element (12), and a rod (44) for connecting the decorative element to the connector piece. The rod has a first end which is attachable to the decorative element, and a second end provided with a screw-threaded portion for attachment to the connector piece, the second end of the rod has a first radius. The trophy base includes a bore (36) shaped to receive the connector piece, and the bore has an internal wall. The connector piece is formed from a plastics material and comprises a head portion (22) and a body portion (24). It has an elongate socket (26) passing through both the head and body portions, the elongate socket has a second radius which is greater than or equal to the first radius. The body portion of the connector piece has a first end proximal to the head portion and a second end distal to the head portion, and the second end of the body portion comprises at least two parts which are resilient when subjected to a force substantially perpendicular to a longitudinal axis of the elongate socket. The body portion has an internal surface defining the elongate socket and the internal surface is provided with at least two elongate protrusions (34) oriented substantially parallel to the longitudinal axis of the elongate socket. The elongate protrusions define an inner channel with a third radius, and the third radius is smaller than the first radius. The body portion has an external surface provided with a plurality of ridges, and the connector piece is connectable to the trophy base by pushing the connector piece into the bore such that the parts of the body portion are pushed together and such that the ridges are in contact with the internal wall of the bore. The decorative element is connectable to the base by screwing the second end of the rod into the socket of the connector piece such that the screw-threaded portion of the rod engages with the elongate protrusions within the socket.

A fastening anchor 1 for use with panels comprises a fixing component and a chassis 1. The fixing component has a body capable of accepting and retaining a fastener, at least two arms 22 and pivotable

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