CN2644752Y

CN2644752Y - Expansion screw bolt

Info

Publication number: CN2644752Y
Application number: CN 03253332
Authority: CN
Inventors: 孟繁伟; 孙东村
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-09-08
Filing date: 2003-09-08
Publication date: 2004-09-29
Anticipated expiration: 2013-09-08

Abstract

The utility model relates to a new model expansion bolt and is a fixing connecting part and comprises an expansion bolt body and a core screw, wherein, the external end of the expansion bolt body is a connecting thread end, and the internal end is a notch expansion end; a core screw inserting hole is arranged in the expansion bolt body, the expansion notch at the internal end is communicated with the core screw inserting hole; the core screw is arranged in the core screw inserting hole, and a fixing nut is arranged on the connected thread of the expansion bolt body; the bolt structure is simple and the cost is low, as well as the connecting and fixing intensity is large, the fastness is good, the use positioning is exact, the operation is convenient and is easily disassembled and cleaned, and the application performance is good and is easily applied and popularized.

Description

Upset bolt

Technical field

The utility model relates to a kind of improved EXPANSION ANCHOR BOLTS, is fixed connecting piece.

Background technique

Traditional expansion bolt is to be made of the outer sleeve pipe of screw rod, nut and screw rod, and the inner of screw rod is that diameter becomes big expansion tapered end, and the inner of sleeve pipe is provided with the expansion notch.During use, when by screwing nut screw rod being spurred from sleeve pipe, the expansion tapered end of screw rod makes the expansion notch distending of sleeve pipe, is connected and fixed in the object thereby it is fixed on.The shortcoming of this EXPANSION ANCHOR BOLTS has: (1) casing wall is thin, has influenced to be connected and fixed intensity and soundness; (2) gap is big between screw rod and sleeve pipe, and the tapered end that expands again diameter is bigger, need bore bigger hole when installing and using, and power consumption is big, and is destructive big to fixed object, especially is difficult for accurately location, operation inconvenience; When (3) using, need firmly turn nut, operation strength is big, inconvenience; (4) in case after using, just for good and all being fixed on fixed object has suffered, can't dismantle removing, both influence other and differently connected being connected and fixed separately of objects, equipment, workpiece, also be difficult for adjusting the original fixed position of skew, and, be exposed to outer screw portion, there is hidden danger in surrounding environment; (5) consumptive material is many, the cost height.

Summary of the invention

Technical problem to be solved in the utility model is: overcome above-mentioned the deficiencies in the prior art, provide a kind of cost low, it is big to be connected and fixed intensity, and soundness is good, uses accurate positioning, uses easy to operate, and the upset bolt of removing easily.

Upset bolt described in the utility model, comprise EXPANSION ANCHOR BOLTS body and core nail, the outer end of EXPANSION ANCHOR BOLTS body is the connecting thread end, the inner is the notch inflating end, establish core nail patchhole in the EXPANSION ANCHOR BOLTS body, inner expansion notch communicates with core nail patchhole, and the core nail is fitted in the core nail and inserts in the hole, and is fitted with set screw nut on the connecting thread of EXPANSION ANCHOR BOLTS body.

The utility model is simple in structure, and consumptive material is few, and cost is low.During use, get out and the fixed hole of EXPANSION ANCHOR BOLTS body with the footpath, the EXPANSION ANCHOR BOLTS body is placed in one, again the core nail is inserted the core nail and insert in the hole, knock the core nail, the core that enters nail struts the expansion notch of EXPANSION ANCHOR BOLTS body the inner, thereby reaches fixing purpose.The EXPANSION ANCHOR BOLTS body is real equipment structure, and intensity is big, has increased greatly to be connected and fixed intensity and soundness; Accurate measurement, location are convenient in fixing boring and EXPANSION ANCHOR BOLTS body same diameter; Knock the core nail and can realize fixing, time saving and energy saving, easy to operate; And, when need not EXPANSION ANCHOR BOLTS and exist, can easily EXPANSION ANCHOR BOLTS be disposed, the core nail is extracted out, utilize the strength of turn nut, the expansion notch is folded, make the EXPANSION ANCHOR BOLTS body recover former state, can easily take out, neither influence other and differently connect being connected and fixed separately of objects, equipment, workpiece, also can arbitrarily adjust, change the fixed position, also eliminate screw rod and exposed the hidden danger that exists.

In the utility model:

Core nail patchhole extends in the notch inflating end, and firmly expansion effect is obvious.

The outer surface design of EXPANSION ANCHOR BOLTS body notch inflating end can there be anti-skidding roughened surface, as: the ring-type concave-convex grain of anti-back skating etc. further increase constant intensity and soundness.

Set screw nut is provided with the packing ring that freely rotates relative to nut, two matched togethers, and simplified structure, the convenient use operated.

The utility model EXPANSION ANCHOR BOLTS is simple in structure, and cost is low, and it is big to be connected and fixed intensity, and soundness is good, uses accurate positioning, uses easy to operate, and dismounting easily, removing, application performance is good, is beneficial to and applies.

Description of drawings

Fig. 1, the utility model one example structure schematic representation.

Fig. 2, existing EXPANSION ANCHOR BOLTS structural representation.

Among the figure: 1, ring-type concave-convex grain 11, screw rod 12, sleeve pipe 13, the expansion tapered end of core nail 2, connecting

thread end

3,10, set screw nut 4, packing ring 5, EXPANSION ANCHOR BOLTS body 6, core nail patchhole 7, notch inflating end 8, expansion notch 9, anti-back skating.

Embodiment

The utility model is described in further detail in conjunction with the foregoing description accompanying drawing.

As shown in the figure, upset bolt described in the utility model, comprise EXPANSION ANCHOR BOLTS body 5 and core nail 1, the outer end of EXPANSION ANCHOR BOLTS body 5 is a connecting thread end 2, the inner is a notch inflating end 7, establishes core nail patchhole 6 in the EXPANSION ANCHOR BOLTS body 5, and inner expansion notch 8 communicates with core nail patchhole 6, core nail 1 is fitted in the core nail patchhole 6, is fitted with set screw nut 3 on the connecting thread of EXPANSION ANCHOR BOLTS body 5.Core nail patchhole 6 extends in the notch inflating end 7, and the outer surface design of the notch inflating end 7 of EXPANSION ANCHOR BOLTS body 5 has the ring-type concave-convex grain 9 of anti-back skating, and set screw nut 3 is provided with the packing ring 4 that freely rotates relative to nut 3.

During use, EXPANSION ANCHOR BOLTS body 5 is placed the fixing boring in the good same footpath of prior brill, core nail 1 is inserted in the core nail patchhole 6 again, knock core nail 1, the core nail 1 expansion notch 8 with EXPANSION ANCHOR BOLTS body 5 the inners that enters struts, and reaches fixing purpose.

Claims

1, a kind of upset bolt, it is characterized in that comprising EXPANSION ANCHOR BOLTS body and core nail, the outer end of EXPANSION ANCHOR BOLTS body is the connecting thread end, the inner is the notch inflating end, establish core nail patchhole in the EXPANSION ANCHOR BOLTS body, inner expansion notch communicates with core nail patchhole, and the core nail is fitted in the core nail and inserts in the hole, and is fitted with set screw nut on the connecting thread of EXPANSION ANCHOR BOLTS body.

2, EXPANSION ANCHOR BOLTS according to claim 1 is characterized in that core nail patchhole extends in the notch inflating end.

3,, it is characterized in that the outer surface of EXPANSION ANCHOR BOLTS body notch inflating end is anti-skidding roughened surface according to claim 1 or 2 described EXPANSION ANCHOR BOLTS.

4, EXPANSION ANCHOR BOLTS according to claim 3, the outer surface design that it is characterized in that EXPANSION ANCHOR BOLTS body notch inflating end has the ring-type concave-convex grain of anti-back skating.

5, EXPANSION ANCHOR BOLTS according to claim 4 is characterized in that set screw nut is provided with the packing ring that freely rotates relative to nut.