CN2675931Y

CN2675931Y - Safety fastener

Info

Publication number: CN2675931Y
Application number: CN 200420033001
Authority: CN
Inventors: 张式沂
Original assignee: 徐勤
Current assignee: Ningbo Jieke Fastener Co Ltd
Priority date: 2004-02-26
Filing date: 2004-02-26
Publication date: 2005-02-02
Anticipated expiration: 2014-02-26

Abstract

The utility model discloses a safety fastener, comprising an assorted nut, a washer and a bolt; the nut is a profile nut with a screw and a helical tooth bottom face, comprising a closed cupola, a hex perimeter and a six wedge slant face; the washer is a profile gasket, and the contact face of the profile gasket and the assorted nut or the bolt is a hollow helical tooth bottom face which is composed of radial six wedge slant faces; the other face of the profile gasket connecting with a connection piece is a circular ring face which is provided with a wedge face vertical sharp strip, and the periphery of the profile gasket is provided with a non-axisymmetry loading and unloading notch; the bolt is a round plane which is provided with a dome shape bolt head, the bottom face of the bolt is provided with the single wedge face vertical sharp strip; the bolt is a helical tooth bottom face which is provided with a hexagon bolt head, and the bottom face of the helical tooth bottom face is matched with the profile gasket and composed of six wedge slant faces; the safety fastener has the advantages of large temperature differential variation, the fastener can not be loosed in the vibro-impact frequency environment, the rim of the circumference washer is provided with the non-axisymmetry loading and unloading notch and the theft protection action, the closing vaulted hexagonal nut can prevent rain from invading, and the corrosion is avoided.

Description

A kind of safety attachment

Technical field

The utility model relates to a kind of fastening piece, exactly relates to a kind of safety attachment locking, antitheft, the anti-corrosion function that has.

Background technique

Fastening piece is the very general structural connection of a kind of application, all is widely used in every field such as building construction, Rail Highway bridge construction, engineering machinery, mechanical production devices, transport facility, information equipment, household electric appliance.The present fastening piece that uses is by supporting composition of hexagon nut, rounded washers and hexagon head bolt of routine.This external member is anti-loose poor performance in user mode, very easily gets loose in particularly violent in temperature variation, the frequent environment of vibratory impulse and accidents caused; Owing to can be caused equipment and material to lose easily by pipe wrench commonly used, spanner dismounting; Nut in this fastening piece and bolt junction also often corrode corrosion because of rainwater is moist and go bad, thereby its application have significant limitation.

Summary of the invention

Goal of the invention of the present utility model is: can not occur getting loose for the user provides to use in a kind of, the frequent environment of vibratory impulse big in difference variation, can not be dismantled by common tool, can do not got rusty, have the safety attachment of anti-loose anti-theft antirust function by rain erosion.

Goal of the invention of the present utility model realizes by implementing following technical proposals:

A kind of safety attachment, form by supporting nut, packing ring and bolt, it is characterized in that: this nut is an abnormity nut, be that it has the regular hexagon periphery, its peripheral angles top of mind-set in serving as reasons in the bottom surface that contacts with packing ring, form the helical teeth bottom surface that has center screw that radial six wedge shape inclined-planes constitute, and the end face of this nut is the dome of sealing; This packing ring is a profile gasket, be in its upper and lower surfaces with the supporting nut or the surface of contact of bolt, it is the suitable engagement pitch face in helical teeth bottom surface that constitutes with the radial wedge shape inclined-plane of nut, and with the contacted another side of link be planar annular, on this plane, has the vertical sharp bar of single wedge surface by middle mind-set edge trend, single wedge surface direction of point bar is in the front end that screws direction, and the periphery of packing ring is the circle edge with non-axisymmetric loading and unloading notch; This bolt is a special shaped screw bolt, be that it has the dome shape bolt head, the bottom surface of the position, connecting part of bolt head and screw rod, for having disk by the vertical sharp bar of single wedge surface of middle mind-set edge trend, single wedge surface direction of point bar is in the front end that screws direction, or the bolt head of this bolt is the hexagon bolt head, and the bottom surface of the position, connecting part of bolt head and screw rod, be with this profile gasket adaptive have a helical teeth bottom surface that radial six wedge shape inclined-planes constitute.

Advantage of the present utility model is: because the surface of contact of surface of contact, bolt and the packing ring of nut and packing ring, for having the helical teeth bottom surface that radial six wedge shape inclined-planes constitute, be combined on the packing ring bottom plane that contacts with link, be shaped on the vertical sharp bar of single wedge surface, ensured therefore that tight state part had both made to use in, the frequent environment of vibratory impulse big in difference variation can not get loose by middle mind-set edge trend; Because the packing ring of circular periphery, its edge are shaped on non-axisymmetric loading and unloading notch, it is malfunctioning to cause pipe wrench commonly used, wrench to be operated, and makes this fastening piece have good antitheft effect; Therefore because traditional hexagon nut is modified into the hexagon nut with sealing dome, can prevent effectively that rainwater from invading and avoid corrosion; So this tight state part is locking, antitheft, antirust safety attachment.

Description of drawings

Fig. 1 is the utility model fastening piece perspective view, and wherein last figure is an abnormity nut, and middle figure is a profile gasket, and figure below is the special shaped screw bolt structure intention with dome shape bolt head;

Fig. 2 is the utility model fastening piece perspective view, and wherein last figure is the special shaped screw bolt with hexagon bolt head, and figure below is profile gasket structure intention.

Fig. 3 is the assembling schematic representation by the utility model nut, packing ring, bolt and link;

Fig. 4 is the assembling schematic representation by the utility model bolt and packing ring and link;

Mark among the figure: 1 is abnormity nut, 2 is profile gasket, 3 for having the special shaped screw bolt of dome shape bolt head, 4 is link, 5 for having the special shaped screw bolt of hexagon bolt head, 6 is the sealing dome of abnormity nut, 7 is the hexagon periphery of abnormity nut, 8 is the helical teeth bottom surface that has center screw that is made of six wedge shape inclined-planes, 9 is the vertical sharp bar of single wedge surface, and 10 is the loading and unloading notch on the profile gasket edge, and 11 is the dome shape bolt head, 12 is the hexagon bolt head, and 13 is the bottom plane of dome shape bolt head.

Embodiment

Example 1 has the safety attachment of dome shape bolt head bolt accessory

The utility model safety attachment, form by supporting nut, packing ring and bolt, this nut is an abnormity nut 1, be that it has regular hexagon periphery 7, its peripheral angles top of mind-set forms helical teeth bottom surface 8 that constitute, that have center screw, radial six wedge shape inclined-planes in serving as reasons in the bottom surface that contacts with packing ring 2, and the end face of this nut is the dome 6 of sealing; This packing ring is a profile gasket 2, be in its upper and lower surfaces with the supporting nut 1 or the surface of contact of bolt 5, it is the hollow pitch face 14 that constitutes by radial six wedge shape inclined-planes, the helical teeth bottom surface of this surface of contact and nut 1 or bolt 5 is suitable, and with link 4 contacted another sides be circular planes, on this plane, has the vertical sharp bar 9 of single wedge surface by middle mind-set edge trend, single wedge surface direction of point bar 9 is in the front end that screws direction, and the periphery of packing ring 2 is the circle edge with centrosymmetric three loading and unloading notches 10; This bolt is a special shaped screw bolt 3, be that it has dome shape bolt head 11, the bottom surface of the position, connecting part of this bolt head and screw rod, for having the disk 13 by the vertical sharp bar 9 of single wedge surface of middle mind-set edge trend, single wedge surface direction of sharp bar 9 is in the front end that screws direction.Fig. 3 has provided the assembling schematic representation of itself and link 4.

Example 2 has the safety attachment of hexagon bolt hook bolt accessory

The utility model safety attachment, form by supporting bolt and packing ring, the bolt head of this bolt 5 is a hexagon bolt head 12, and the bottom surface of the position, connecting part of bolt head and screw rod, for the hollow pitch face 14 of this profile gasket 2 adaptive, have helical teeth bottom surfaces 15 that radial six wedge shape inclined-planes constitute; This packing ring is a profile gasket 2, be in its upper and lower surfaces with the surface of contact of supporting hexagon bolt 5, be to be the hollow pitch face 14 that radial wedge shape inclined-plane constitutes by six, and with link 4 contacted another sides be circular planes, on this plane, has the vertical sharp bar 9 of single wedge surface by middle mind-set edge trend, single wedge surface direction of point bar is in the front end that screws direction, and the periphery of packing ring 2 is the circle edge with centrosymmetric three loading and unloading notches 10.Fig. 4 has provided the assembling schematic representation of itself and link 4.

Claims

1, a kind of safety attachment is made up of supporting nut, packing ring and bolt, it is characterized in that:

Nut is abnormity nut (1), be that it has regular hexagon periphery (7), the bottom surface that contacts with packing ring (2) is form radial six helical teeth that constitute, that have center screw bottom surfaces, wedge shape inclined-plane (8) by its peripheral angles top of middle mind-set, and the end face of this nut to be the dome (6) of sealing;

Packing ring is profile gasket (2), be to be in its upper and lower surfaces with the supporting nut (1) or the surface of contact of bolt (5), with radial six the wedge shape inclined-planes of abnormity nut (1) the suitable hollow pitch face (14) in helical teeth bottom surface (8) that constitute, that have center screw, and with the contacted another side of link (4) be circular planes, on this plane, has the vertical sharp bar of single wedge surface (9) by middle mind-set edge trend, single wedge surface direction of point bar (9) is in the front end that screws direction, and the periphery of packing ring (2) is for having the circle edge of non-axisymmetric loading and unloading notches (10);

Bolt is a special shaped screw bolt, be that it has dome shape bolt head (11), the bottom surface of the position, connecting part of this bolt head and screw rod is, has the disk (13) by the vertical sharp bar of single wedge surface (9) of middle mind-set edge trend, and single wedge surface direction of sharp bar (9) is in the front end that screws direction; Or the bolt head of this bolt is hexagon bolt head (12), and the bottom surface of the position, connecting part of this bolt head and screw rod is, with the hollow pitch face (14) of profile gasket (2) adaptive, have a helical teeth bottom surface (15) that radial six wedge shape inclined-planes constitute.