CN2575354Y

CN2575354Y - Improved screw nail

Info

Publication number: CN2575354Y
Application number: CN 02248097
Authority: CN
Inventors: 何锡伶
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-09-13
Filing date: 2002-09-13
Publication date: 2003-09-24
Anticipated expiration: 2012-09-13

Abstract

The utility model relates to a self lock expansion rivet, which belongs to the technical field of fasteners without screw threads. The self lock expansion rivet is composed of a rivet and an expansion sleeve barrel, wherein, light grooves are arranged on a rivet body of the rivet and long burrs are fully distributed on the rivet body, the rivet is matched with the sleeve barrel in an interference mode, and the goals of sleeve barrel expansion and rivet self lock can be reached. The self lock expansion rivet which is made of high-strength plastics is mainly used for fastening reflection road signs on roads.

Description

A kind of self-locking expansive rivet

Technical field

The utility model relates to no threaded fastener technology field, particularly a kind of self-locking expansive rivet.

Background technique

The reflector marker of using on various expressways or road road surface at present all is directly to stick on the road surface with powerful adhesive, owing to all can be subjected to a large amount of operations automobile tire bump on the way every day, add in the paste operation process, sometimes remove not thoroughly to the greasy dirt dust that is pasted the road surface, influenced tenacity, so, grown service time and reflector marker can take place taken off and fly phenomenon, both influenced the sign of traffic, also brought difficulty to maintenance work.

Goal of the invention

The technical problems to be solved in the utility model is to adopt a kind of easy to operate fastening piece that reflector marker is fixed on the road surface securely, and simultaneously, just in case reflector marker damages, this fastening piece can not damage tire.

The technical solution that the utility model proposed is such: a kind of self-locking expansive rivet, comprise rivet 1, the expansion sleeve 2 made by engineering plastics, this expansion sleeve 2 is embedded under the corresponding road surface, it is characterized in that: described rivet 1 is provided with cylinder staple bar 3, its underpart is conical, and top is provided with the head of a nail 5 on it; Described expansion sleeve 2 is for waiting elongate sleeve of external diameter; Described rivet 1 is that the interference expansion cooperates with expansion sleeve 2 endoporus.Described cylinder staple bar 3 shafts have 3-6 bar five equilibrium all around and are parallel to the shallow grooves of rivet 1 medial axis.Evenly be covered with the plastics thorn that becomes mildewed around described cylinder staple bar 3 shafts.

Compared with prior art, the utlity model has following beneficial effect: in the fixedly position boring of reflector marker, the plastic expansion sleeve is inserted in this hole, put reflector marker, with hammer the long rivet of plastics is thrown into the expansion sleeve endoporus again, and this sleeve is expanded automatically, from this rivet of pinning, thereby reflector marker is tightened up, thereby soundness is strong, durable, convenient to operation.Because rivet and expansion sleeve are all used the high-strength engineering plastic manufacturing, therefore, in case after reflector marker was damaged, these working of plasticss did not all damage the tire in travelling, and have improved traffic safety.

Description of drawings

Fig. 1 is a kind of self-locking expansive rivet two parts rivets of the utility model and expansion sleeve shape schematic representation.

Fig. 2 is that the utility model self-locking expansive rivet is used for fixing the structural representation of reflector marker on the road surface.

Embodiment

By following embodiment the utility model is further elaborated.

Referring to Fig. 1, shown in Figure 2, a kind of self-locking expansive rivet is made of rivet 1, expansion sleeve 2, they are made by high-strength engineering plastic, disjunctor is covered with on rivet 1 nail bar 3 the acclivitous plastics thorn that becomes mildewed, expansion sleeve 2 is for waiting external diameter, and its internal diameter can be uniform internal diameter or up big and down small not uniform internal diameter, but upper and lower internal diameter can only have very little gap, rivet 1 nail bar 3 diameters are a bit larger tham sleeve 2 internal diameters simultaneously, are beneficial to the expansion and rivet 1 self-locking of sleeve 2.When on the way reflector marker 4 being installed, at first in the boring of corresponding mounting point, put into sleeve 2, the reflector marker 4 that its bottom surface is scribbled adhesive is put then, its mounting hole is facing to sleeve 2, insert rivet 1 again, it is interior to the bottom and with its distending with hammer rivet 1 to be squeezed into sleeve 2, reaches rivet 1 and firmly is fixed tightly on the road surface with sleeve 2 self-lockings and with reflector marker 4.

Claims

1, a kind of self-locking expansive rivet, comprise rivet (1), the expansion sleeve (2) made by engineering plastics, this expansion sleeve (2) is embedded under the corresponding road surface, it is characterized in that: described rivet (1) is provided with cylinder staple bar (3), its underpart is conical, and top is provided with the head of a nail (5) on it; Described expansion sleeve (2) is the elongate sleeve that waits external diameter; Described rivet (1) is that the interference expansion cooperates with expansion sleeve (2) endoporus.

2, self-locking expansive rivet according to claim 1 is characterized in that: described cylinder staple bar (3) shaft has 3-6 bar five equilibrium all around and is parallel to the shallow grooves of rivet (1) medial axis.

3, self-locking expansive rivet according to claim 2 is characterized in that: evenly be covered with the plastics thorn that becomes mildewed around described cylinder staple bar (3) shaft.