CN201582266U

CN201582266U - Implanted expansion screw

Info

Publication number: CN201582266U
Application number: CN2009202884567U
Authority: CN
Inventors: 赵庆义
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-12-25
Filing date: 2009-12-25
Publication date: 2010-09-15
Anticipated expiration: 2019-12-25

Abstract

The utility model relates to a fastening bolt assembly, which is integrated with fixed base bodies such as a wall body, a post, a floor slab and the like. The implanted expansion screw mainly comprises a bolt, a bolt casing pipe and a nut, wherein a plurality of axial slotted notches are arranged at the outer end of the bolt casing pipe, a lip plate extending outwards is arranged at the peripheral edge of the nut, and the inner end of the nut is transitioned to the lip plate through a wedge-shaped surface. The implanted expansion screw has the advantages of large and stable holding and fastening force, easy operation, neat appearance and low cost.

Description

The implanted setscrew

Technical field

The utility model relates to the fastening screw assembly that fastens as one with fixing bases such as body of wall, cylinder or floors.

Background technique

EXPANSION ANCHOR BOLTS is most widely used in above-mentioned technical field, its constituent elements includes screw thread base bar, expansion sleeve, packing ring and nut, screw thread base bar is provided with taper spiral shell head, taper spiral shell head is clamp-oned expansion sleeve, fastening by the expansion and the generation friction withdrawal resistances such as body of wall, cylinder or floor of expansion sleeve.EXPANSION ANCHOR BOLTS only realizes fastening use principle with limited expansion, because of its expansion coefficient low, so more be applicable to fixing base with suitable hardness, hollow brick wall at present more frame-type building, because its quality shows slightly loose, use the normal technical problem that loosening even fastening failure occur of existing EXPANSION ANCHOR BOLTS.

Summary of the invention

It serves as that the master realizes that implanted setscrew fastening, fixation, this implanted setscrew also have minimum outer surface and give prominence to that goal of the invention of the present utility model is to provide a kind of strength with clamping, thereby more practical and attractive in appearance.The implanted setscrew that the utility model provides, its main part includes bolt, bolt sleeve and nut, and the bolt sleeve outer end is provided with some axial bar shaped notches, and nut circumference is provided with the labial lamina that abduction is extended, and the inner of nut transits to labial lamina through sphenoid surface.

The disclosed implanted setscrew of the utility model technological scheme, bolt sleeve and nut be placed in successively with screw-thread fit on bolt, the tapered end of nut is relative with the bar shaped notch end of bolt sleeve, send in the fixed hole in the lump, this fixed hole can be a blind hole, also can be the body of wall through hole of thickness less than bolt length, in the process of swivel bolt, nut inwardly climbs gradually along bolt thread, at first clamp-on bolt sleeve, each section of jurisdiction of squeezed gradually bolt sleeve end, in the process that continues again to climb, each section of jurisdiction penetrates body of wall gradually as the petal abduction under the transverse force effect of nut labial lamina, in cylinder or the floor, or fit in body of wall, the inner side surface of cylinder or floor, until each section of jurisdiction and body of wall, the attachment surface of cylinder or floor makes it have the enough fastening strength of controlling, then fastening EO.So as can be known by last narration, the advantage of the technical program is that it is mainly to control the strength clamping bolt, and auxiliary the fastening strength of expansion arranged, it is more stable after so it is fixing, be particularly useful for fixing bases such as the slightly poor body of wall of hardness, cylinder or floor, it also has easy operating, technological merit that outward appearance is succinct, and bolt can be selected existing bolt standard piece for use as critical piece in addition, so its cost is more cheap.

Description of drawings

Fig. 1 and Fig. 2 are respectively the structural drawing of this implanted setscrew stand-by state and tightening state.

Embodiment

Implanted setscrew of the present utility model, its concrete enforcement structure as shown in drawings, its main part includes bolt 1, bolt sleeve 2 and nut 3, the outer end of bolt sleeve 2 wherein is provided with some axial bar shaped notches 4, the outer end of bolt sleeve 2 is separated into some sections of jurisdiction 20 by axial bar shaped notch 4, be arranged with compression spring 5 on the bolt 1 successively, packing ring 6, the nut 3 of bolt sleeve 2 and screw-thread fit, the periphery of nut 3 wherein is provided with the labial lamina 30 that abduction is extended, in the present embodiment structure this labial lamina 30 for the nut exterior edge face radially abduction extend to form, this labial lamina 30 can be an integral planar formula labial lamina, also can be shaped on some notches, become the multi-clove type labial lamina at the edge of its integral planar formula labial lamina; The inner of nut 3 transits to labial lamina 30 through sphenoid surface 31, and this sphenoid surface 31 is to provide the guiding that extend out extension for section of jurisdiction 20 for nut 3 and bolt sleeve 2 in crowded pushing away; Described sphenoid surface 31 can adopt cambered surface, also can adopt guide surfaces such as conical surface or pyramidal surface.Cooperate with the inner of nut 3, the outer end of bolt sleeve 2 is provided with flare 21.

Its fastening process as shown in Figure 2, the bolt 1 of this implanted setscrew carries bolt sleeve 2 and nut 3 is sent in the body of wall fixed hole 8, this fixed hole 8 can be a blind hole, also can be the body of wall through hole of thickness less than bolt length, then is the thickness of wall body position as the dotted line among Fig. 2; In the process with instrument swivel bolt 1,3 on nut inwardly climbs gradually along bolt thread, at first clamp-on bolt sleeve 2, each section of jurisdiction 20 of squeezed bolt sleeve 2 ends gradually, in the process that continues again to climb, each section of jurisdiction 20 penetrates in body of wall, cylinder or the floor as petal abduction and brute force under the transverse force effect of nut labial lamina 30, or fit on the inner side surface of body of wall, cylinder or floor, attachment surface until each section of jurisdiction 20 and body of wall, cylinder or floor makes it have the enough fastening strength of controlling, then fastening EO.

Claims

1. implanted setscrew, its main part includes bolt (1), bolt sleeve (2) and nut (3), the bolt sleeve outer end is provided with some axial bar shaped notches (4), it is characterized in that nut (3) periphery is provided with the labial lamina (30) that abduction is extended, the inner of nut transits to labial lamina through sphenoid surface (31).

2. implanted setscrew according to claim 1 is characterized in that the outer end of bolt sleeve (2) is provided with flare (21).

3. implanted setscrew according to claim 1, the exterior edge face that it is characterized in that nut (3) radially abduction extends to form labial lamina (30).

4. according to claim 1 or 3 described implanted setscrews, it is characterized in that nut labial lamina (30) edge is shaped on some notches, constitute the multi-clove type labial lamina.