CN201080945Y

CN201080945Y - Double nut coordinated type expansion screw

Info

Publication number: CN201080945Y
Application number: CNU2007201500128U
Authority: CN
Inventors: 任芝远
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-05-11
Filing date: 2007-05-11
Publication date: 2008-07-02
Anticipated expiration: 2017-05-11

Abstract

The utility model discloses a double-nut linkage type expansion screw which consists of a threaded rod body, an expansion sleeve and a conical nut part. The utility model is characterized in that: the conical nut part is formed by that a conical nut (1) is connected with a corrugated nut (3) with corrugations through a connecting part (7), the corrugated nut (3) is provided with a corrugation (4) matched with a slot (5) arranged on an expansion sleeve (2), the conical nut (1) and the corrugated nut (3) are arranged in the expansion sleeve (2), one side of the expansion sleeve (2) provided with the conical nut (1) is provided with a plurality of expansion openings (9), a threaded rod body (6) is screwed in toward the conical nut (1) through a nut threaded hole (8) from one side of the corrugated nut (3); for the double-nut linkage type expansion screw, the slot (5) in the expansion sleeve can also be the corrugation (4), the corrugation (4) on the corrugated nut (3) matched with the slot (5) in the expansion sleeve is changed into the slot (5). The utility model has the advantages that the threaded rod body of the expansion screw can be flexibly replaced and can be independently fixed.

Description

A kind of double nut linking type setscrew

Technical field

The utility model relates to a kind of setscrew of fixed object, and by the screwed screw thread body of rod in end, the expansion sleeve and the cone nut of a hollow tubular are partly formed.

Background technique

In existing setscrew, great majority are that an end is threaded the body of rod, the other end has the setscrew of cone expander section, this part is installed in the expansion sleeve, fix object and screw with screwing nut, with screw nut outwards the pulling threaded stem that has a cone reach the purpose of expansion sleeve mounting article, shortcoming that is connected with of this setscrew is: one, single screw can not be fixed setscrew itself separately under the situation of mounting article not.Two, this setscrew, the screw thread body of rod length that has cone is fixed, and can not adjust, change.Three, after fixed object, the screwed end of the screw thread body of rod often protrudes in outside the nut, influences attractive in appearance.Four, with respect to more thick and heavy object, this screw often can't use owing to the restriction of threaded stem body length, needs external other accessories just can use.

According to the patent documentation that retrieves, application number is 200420118604.8, the applying date is on November 19th, 2004, publication number (notification number) is 2755340, open (bulletin) day is on February 1st, 2006, disclosed a kind of setscrew, comparatively close with the utility model, disclosed this setscrew, it comprises a threaded pipe, one Coupling, an and expansion sleeve, threaded pipe is respectively equipped with a shank and a convergence part, the convergence part of telling is connected with telling Coupling, Coupling has a tapered portion and a junction, between threaded pipe and Coupling, be provided with an expansion sleeve, expansion sleeve is hollow and annular, the anchor ring of one end has a plurality of conduits along axial direction, the conduit of telling is positioned at tapered portion one side of Coupling, can directly be connected with multiple difform retaining ring, its shortcoming is, mounting article is to utilize threaded pipe and object socket, its intensity is less relatively, and the length of threaded pipe also is nonadjustable, and can only join with multiple difform retaining ring, and usage range is less.

The model utility content:

The technical problems to be solved in the utility model is, a kind of setscrew that can change all lengths screw thread body of rod with different object thickness flexibly is provided, and the screw thread body of rod can be the screwed various ways parts of an end, the setscrew that can fix separately.

In order to address the above problem, the utility model provides the double nut linking type setscrew of following structure, this double nut linking type setscrew, by one the one screwed screw thread body of rod of end, expansion sleeve and cone nut are partly formed, the described screw thread body of rod, it is the body of rod of the screwed various ways of an end, described expansion sleeve is that an end is provided with a plurality of inflation openings, be axially arranged with the hollow circular tube of many conduits along expansion sleeve, described cone nut partly is by a cone nut, joint and a convex body nut constitute, joint links together two nuts, cone nut is expanded gradually by joint and forms cone, slightly larger in diameter is in the diameter of expansion sleeve, have on the convex body nut with expansion sleeve on set conduit match protruding stupefied, can prevent that nut from rotating in expansion sleeve, play directing effect, cone nut partly is installed in the expansion sleeve, a side that has cone nut is installed in the side that expansion sleeve has inflation openings, the screw thread body of rod screws in from the nut thread hole on the convex body nut, nut is drawn in expansion sleeve, cone nut with expansion sleeve from inflation openings with the expansion sleeve distending.

The beneficial effects of the utility model are, it can change the setscrew body of rod of all lengths flexibly with different object thickness, can not be subjected to the restriction and the screw thread body of rod of object size can be as long as the screwed various forms of parts of an end, as: hook that furred ceiling is used and ring, and overcome the drawback that original screw lead screw length can't be changed, do not having under the situation of object, setscrew of the present utility model can be the parts that adapt to all lengths, utilize the screw-in of self screw rod can realize screw itself fixing, overcome the drawback that setscrew commonly used in the past can't be fixed separately, and, the outer end of this screw is main inlet side, tap can all screw in body of wall, nut or parts are only stayed in the outside, have after tightening unlike original setscrew outside the outstanding nut of lead screw, influence attractive in appearance and drawback practical effect, this screw lead screw can be general with the normal screws bar.Can make the screw of all size, to adapt to various parts, the installation of object and suspension.Technology is simple, and cost is lower.

Description of drawings

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 shows the whole side of the utility model double nut linking type setscrew cross-sectional schematic.

Fig. 2 shows the utility model double nut linking type setscrew expansion sleeve and protruding stupefied nut one side quill is housed to schematic representation.

Fig. 3 shows the axial schematic representation that the utility model double nut linking type setscrew expansion sleeve has inflation openings

Fig. 4 shows the cone nut part entity schematic side view of the utility model double nut linking type setscrew

Fig. 5 shows the screw thread body of rod schematic representation of the utility model double nut interlock setscrew

Fig. 6 shows the utility model double nut interlock setscrew expansion sleeve entity schematic representation

Embodiment

Mode of execution 1: as can be known from the utility model of Fig. 1 to Fig. 9, double nut linking type screw, by expansion sleeve 2, the screw thread body of rod 6 and cone nut partly constitute, expansion sleeve 2 is a hollow circular tube, one end is provided with a plurality of inflation openings 9, have many axial slot 5 on expansion sleeve 2 inwalls, the screw thread body of rod 6 is the screwed multiple shape body of rod of an end, can be the body of rod, can be coupler body, also can be annulus, the cone nut part is by cone nut 1, protruding stupefied nut 3 and joint 7 formations, the nut thread hole 8 of cone nut 1 and protruding stupefied nut 3 are concentric footpaths together, are linked together by joint 7, protruding stupefied nut 3 one ends are installed on an end that does not have inflation openings 9, the external diameter of cone nut 1 is slightly larger than the external diameter of expansion sleeve 2, and the screw thread body of rod 6 passes through the end precession of nut thread hole 8 to cone nut 1 from a side of protruding stupefied nut 3, and cone nut 1 is drawn in expansion sleeve 2, cone nut 1 backs down 9, plays the expansion positioning action.

Mode of execution 2: the conduits 5 in the expansion sleeve 2 are set as protruding stupefied 4, protruding stupefied 4 on the protruding stupefied nut 3 that will be corresponding with it becomes conduit 5, plays directing effect too.

Claims

1. double nut linking type setscrew, by a screw thread body of rod, expansion sleeve and cone nut are partly formed, it is characterized in that: cone nut partly is by cone nut (1) and has protruding stupefied protruding stupefied nut (3) and link together with joint (7), have on the protruding stupefied nut (3) with expansion sleeve (2) on the conduit (5) offered protruding stupefied (4) that are complementary, cone nut (1) is installed in the expansion sleeve (2) with protruding stupefied nut (3), the side expansion sleeve (2) that cone nut (1) is installed is provided with a plurality of inflation openings (9), and the screw thread body of rod (6) advances to cone nut (1) one sidespin by nut thread hole (8) from a side of protruding stupefied nut (3).

2. according to the described double nut linking type of claim 1 setscrew, it is characterized in that: the conduit (5) in the expansion sleeve can be protruding stupefied (4), and protruding stupefied (4) on the supporting with it protruding stupefied nut (3) can be conduit (5).