CN2588110Y

CN2588110Y - Assembling expausion screw

Info

Publication number: CN2588110Y
Application number: CN 02295373
Authority: CN
Inventors: 张玉春
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-31
Filing date: 2002-12-31
Publication date: 2003-11-26
Anticipated expiration: 2012-12-31

Abstract

The utility model relates to a combined type expansion bolt which belongs to the technical field of machine fastening or connecting members. In order to reduce the production cost of the existing expansion bolt and solve a plurality of problems brought to users during use, the utility model provides a combined type expansion bolt which not only makes manufacturers do not need to make a plurality of expansion body moulds with various types, but also reduces troubles for users. The utility model is composed of a screw rod, etc. An expansion sleeve of yin-yang complementation type is arranged on the screw rod. The utility model has the advantages of simple structure, convenient installation and use. When the utility model is used, so long as the screw rod has enough length, an expansion sleeve of yin-yang complementation type with enough length can be arranged on the screw rod, and the expansion function of existing expansion bolt can be achieved. Meanwhile, the function of preventing screw caps and screw rods from rotating during use can be achieved, and the function of multiple-point expansion can also be achieved.

Description

The combined type EXPANSION ANCHOR BOLTS

Technical field:

The utility model belongs to mechanical fasteners or link field, particularly relates to a kind of improvement of EXPANSION ANCHOR BOLTS.

Background technique:

The same diameter of EXPANSION ANCHOR BOLTS commonly used at present need be made the mould of different length, and have only some swellings with different bloated bodies.Because EXPANSION ANCHOR BOLTS in use needs by different length, manufactures same diameter and the different bloated mould of length with regard to needing manufacturing firm, thereby has increased manufacture cost.The more important thing is can not be along with EXPANSION ANCHOR BOLTS length increases and the bloated point of increase.

Technology contents:

In order to solve above-mentioned shortcoming, the utility model provides a kind of manufacturing firm that makes to reduce the bloated mould quantity of manufacturing, reduce cost, and realizes the combined type EXPANSION ANCHOR BOLTS of multiple spot swelling.

The utility model is made up of screw rod etc., and the expansion set of yin yang complementarity is installed on screw rod.Screw rod has round end screw rod and hexagon head screw rod.On the conical surface of round end screw rod, be provided with the anti-rotation card.The expansion set of described yin yang complementarity is meant jack to jack adapter expansion set, two positive expansion set, Dan Yindan sun expansion set, single cloudy expansion set, single positive expansion set.Expansion set at yin yang complementarity has longitudinal opening.The cone cover that has the anti-rotation card is installed on the hexagon head screw rod.On the expansion set of yin yang complementarity, be provided with the anti-rotation card.

The utility model is simple in structure, installation, easy to use.In use,, the expansion set of the yin yang complementarity of sufficient length just can be installed on screw rod, promptly reach the expansion function of existing EXPANSION ANCHOR BOLTS, also can reach the function that prevents that nut and screw rod from rotating in use simultaneously simultaneously as long as screw rod has enough length.

Description of drawings:

Fig. 1 is the first kind of Placement that comprises in the utility model;

Fig. 2 is the second kind of Placement that comprises in the utility model;

Fig. 3 is the third Placement that comprises in the utility model;

Fig. 4 is the cone nested structure schematic representation of the utility model band anti-rotation card;

Fig. 5 is the utility model jack to jack adapter expansion set structural representation;

Fig. 6 is the cloudy expansion set structural representation of the utility model list;

Fig. 7 is the utility model list sun expansion set structural representation;

Fig. 8 is the utility model Dan Yindan sun expansion set structural representation;

Fig. 9 is the two positive expansion set structural representations of the utility model.

Embodiment:

The utility model is made up of screw rod etc., and the expansion set of yin yang complementarity is installed on screw rod.

Screw rod has round end screw rod and hexagon head screw rod.

On the conical surface of round end screw rod, be provided with the anti-rotation card.Use the longitudinal opening on the expansion set of anti-rotation card and yin yang complementarity corresponding.

The expansion set of described yin yang complementarity is meant jack to jack adapter expansion set, two positive expansion set, Dan Yindan sun expansion set, single cloudy expansion set, single positive expansion set.So-called complementation is meant that the back of an expansion set docks with the sun of another expansion set, thereby reaches interaction, produces the function that expands or tighten, and realizes the multiple spot swelling.

Expansion set at yin yang complementarity has longitudinal opening.Longitudinal opening can connect whole expansion set, also can not connect.And the opening of pass through openings expansion set can not be more than one or one, and in that pass through openings is not less than expansion set length one half, opening can be opened on same straight line.

The cone cover that has the anti-rotation card is installed on the hexagon head screw rod.The anti-rotation card is stuck on two planes of the correspondence on the nut of hexagon head screw rod during installation.

On the expansion set of yin yang complementarity, be provided with the anti-rotation card.Anti-rotation card on the expansion set is plugged in the opening on the next expansion set.In order to prevent that screw rod and nut together rotate in use.

Above-described all mounting types are screwed in nut the least significant end of screw rod after being installed in expansion set on the screw rod.

Embodiment 1:

Jack to jack adapter expansion set, Dan Yindan sun expansion set, single positive expansion set are installed on the round end screw rod.The one end back of jack to jack adapter expansion set and the awl end of screw rod join, the sunny side of holding the back and Dan Yindan sun expansion set in addition of jack to jack adapter expansion set joins, the sunny side of the back of Dan Yindan sun expansion set and next Dan Yindan sun expansion set joins, wherein Dan Yindan sun expansion set as required length and determine number, then the back of last Dan Yindan sun expansion set and the sunny side of single positive expansion set are joined, install nut in the back, plane of single positive expansion set at last and promptly can use.

Embodiment 2:

Dan Yindan sun expansion set, single cloudy expansion set are installed on the round end screw rod.The back of Dan Yindan sun expansion set joins with the awl end of round end screw rod, and the sunny side of Dan Yindan sun expansion set and the back of the positive expansion set of next Dan Yindan join, wherein the number of the expansion set of Dan Yindan sun as required length and determine.A cloudy expansion set of list is installed then, and the sunny side of the back of single cloudy expansion set and last Dan Yindan sun expansion set joins.Installing nut at last behind the plane of single cloudy expansion set promptly can use.

Embodiment 3:

Cone cover, jack to jack adapter expansion set, single positive expansion set of band anti-rotation card are installed on the hexagon head screw rod.At first on the hexagon head screw rod, install the cone cover of band anti-rotation card, the anti-rotation card that the cone of being with the anti-rotation card is put is stuck on two planes of correspondence of hexagon head screw rod, install the jack to jack adapter expansion set then, back of jack to jack adapter expansion set joins with the sunny side of the cone cover of band anti-rotation card, another back of jack to jack adapter expansion set joins with the sunny side of single positive expansion set, the plane of single positive expansion set joins with the planar ends of next single positive expansion set, the sunny side of next single positive expansion set joins with the back of next jack to jack adapter expansion set again, and another back of next jack to jack adapter expansion set joins with the sunny side of the 3rd the positive expansion set of list again.The last planar end of the positive expansion set of list of face is in the end installed nut and promptly can be used.

Below only be three examples to enumerating in the compound mode of the present utility model, concrete combination can be decided as required, promptly can reach last use so long as the back of the expansion set in employing the utility model and sunny side join.

And after preventing that EXPANSION ANCHOR BOLTS from inserting working surface, expansion set or round end screw rod rotate simultaneously when the turn nut, and the anti-rotation card is installed on expansion set, get final product in the corresponding grafting of opening on anti-rotation card and the next expansion set.After screwing, expansion set promptly can be whole expansion fashions, also can be that a part is an expansion fashion, and another part is the contraction mode.

Claims

1, a kind of combined type EXPANSION ANCHOR BOLTS is made up of screw rod etc., it is characterized in that: the expansion set that yin yang complementarity is installed on screw rod.

2, combined type EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: screw rod has round end screw rod and hexagon head screw rod.

3, combined type EXPANSION ANCHOR BOLTS according to claim 1 and 2 is characterized in that: be provided with the anti-rotation card on the conical surface of round end screw rod.

4, combined type EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that: the expansion set of described yin yang complementarity is meant jack to jack adapter expansion set, two positive expansion set, Dan Yindan sun expansion set, single cloudy expansion set, single positive expansion set.

5, according to claim 1 or 3 described combined type EXPANSION ANCHOR BOLTS, it is characterized in that: the expansion set at yin yang complementarity has longitudinal opening.

6, combined type EXPANSION ANCHOR BOLTS according to claim 1 and 2 is characterized in that: the cone cover that has the anti-rotation card is installed on the hexagon head screw rod.

7, according to claim 1 or 3 described combined type EXPANSION ANCHOR BOLTS, it is characterized in that: on the expansion set of yin yang complementarity, be provided with the anti-rotation card.