CN2495840Y

CN2495840Y - Multi-functional expanding sleeve of anchoring bolt

Info

Publication number: CN2495840Y
Application number: CN 01261941
Authority: CN
Inventors: 李岩松
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-09-27
Filing date: 2001-09-27
Publication date: 2002-06-19
Anticipated expiration: 2011-09-27

Abstract

The utility model relates to a multifunctional expansion bolt sleeve which comprises an expansion sleeve; the post surface of the expansion sleeve is provided with a taper-shaped wing. The utility model is characterized in that the utility model also comprises an expansion body and post which are connected with the expansion helix sleeve; the post surface of the expansion body is provided with a helix groove with a long section; the bottom of the groove is provided with a long opening; the post body is provided with a triangle hole; the expansion body is provided with a self bolt bottom hole; the expansion sleeve body is provided with a self bolt passing hole; and the interior contact round of the triangle hole is the same with the diameter of the self bolt bottom hole. The utility model can be twisted to a ball shape to reach the close contact requirement with the loose wall when the expansion part is positioned in the hollow or loose part of the wall as the middle part of the bolt sleeve is designed to a helix groove expansion part which is easy to be deformed. Therefore the utility model has the advantage of wide applying arrange.

Description

Multifunctional expanded bolt sleeve

One, technical field: the utility model relates to a kind of mechanical fasteners technology, particularly a kind of multifunctional expanded bolt sleeve.

Two, background technique: traditional expansion bolt, its swell increment is less, be suitable for using in the harder solid wall, but, solid wall in the building is fewer and feweri, and aerated concrete wall or light hollow masonry walls body become main body, in addition as plastic-steel door and window, material is soft or be paulin pine body in its framework, and traditional expansion bolt can not be in above-mentioned body of wall use.

Three, summary of the invention: technical problem to be solved in the utility model provides a kind of EXPANSION ANCHOR BOLTS cover, both has been adapted at using on the solid wall, also is adapted at using on hollow wall, the soft and paulin pine wall body, and has reliable fastening function.Solution of the present utility model is, this multifunctional expanded bolt sleeve, it comprises an expansion body, the cylinder of expansion body is provided with the taper fin, it is characterized in that: also have an expander and a cylinder that is connected with expansion swivel nut body, the cylinder of expander is provided with the spiral chute that the cross section is a rectangle, bottom land has long mouthful, be provided with tri-angle-holed in the cylinder, be provided with the tapping screw bottom outlet in the expander, be provided with the tapping screw via hole in the expansion body, tri-angle-holed incircle is identical with the tapping screw bottom diameter of expander.The utility model is owing to be designed to yielding spiral chute expansion arc at the intermediate section of bolt sleeve, when expansion arc is in the hollow or loose place of paulin in the body of wall, can be twisted into a bulk, reaches the requirement that closely contacts with paulin pine wall body.Therefore, the utlity model has the wide advantage of using scope.

Four, description of drawings: Fig. 1 is a structural representation of the present utility model; Fig. 2 is the A-A sectional view of Fig. 1; Fig. 3 is the B-B sectional view of Fig. 1; Fig. 4 is the C-C sectional view of Fig. 1.Among the figure, 1. expansion body 2. fins 3. expanders 4. spiral chutes 5. fins 6. are grown mouthful 7. cylinders

Five, embodiment: multifunctional expanded bolt sleeve comprises expansion body 1, expander 3 and cylinder 7, on the adjacent cylinder of expansion body 1 and expander 3, be evenly equipped with vertebra shape fin 2, can be provided with a plurality of axial rib bodies on the cylinder, can strengthen its intensity and rotational resistance, being provided with the cross section on the cylinder of expander is the spiral chute 4 of rectangle, groove bottom is distributed with long mouthful 6 identical with groove width, on the spiral chute surface, be provided with vertebra shape fin 5, it is the equilateral triangle hole that one cross section is arranged in the cylinder 7, the center of expander 3 is provided with the bottom outlet of tapping screw, this bottom diameter is identical with the interior tri-angle-holed inscribed circle diameter of cylinder, be provided with the tapping screw via hole in the expansion body 1, delthyrium, the tapping screw bottom outlet of expander and the tapping screw via hole of expansion body interconnect, and are provided with the countersink that matches with the tapping screw head in the termination of expansion body.This multifunctional expanded bolt sleeve is made with the polythene plastics.

The using method of multifunctional expanded bolt sleeve and working principle: on body of wall, bore bottom outlet, the expansion body is inserted in the bottom outlet, tapping screw is screwed in the delthyrium of the thread Pilot hole of varicosity and cylinder with screw-driver, when the tapping screw head enters in the countersink of expansion body, can continue to rotate tapping screw, at this moment, screw rotates in the expander cover and can not advance, drive the outside travelling backwards of cylinder, since thinner at the bottom of the spiral chute on the expander, also have axial long mouthful on it, and its rigidity and intensity are all low than cylinder and expansion body, so expander axially shortens and distortion forms a bulk, can make the body of wall extruding of paulin pine solid, produce bigger torque friction power, when expander is in the hollow position of body of wall, this bulk expander is big more than body of wall and bottom diameter, and expansion sleeve can not be deviate from from porthole.

Claims

1, multifunctional expanded bolt sleeve, it comprises an expansion body, the cylinder of expansion body is provided with the taper fin, it is characterized in that; Also has an expander and a cylinder that is connected with expansion swivel nut body, the cylinder of expander is provided with the spiral chute that the cross section is a rectangle, bottom land has long mouthful, be provided with tri-angle-holed in the cylinder, be provided with the tapping screw bottom outlet in the expander, be provided with the tapping screw via hole in the expansion body, tri-angle-holed incircle is identical with the tapping screw bottom diameter of expander.