CN201448342U - Rolling needle type anti-theft screw bolt - Google Patents

Abstract

The utility relates to a non-detachable anti-theft fastening device- a rolling needle type anti-theft screw bolt. A groove is designed on a screw bar; a rolling needle is disposed inside the groove; and the rolling needle is wrapped and fixed by a rubber ring and then screwed into a nut or a device so as to achieve unidirectional braking non-detachable anti-theft effect. The rolling needle type anti-theft screw bolt has the advantages of stable and reliable anti-theft effect and rapid and convenient installation, and is a connecting anti-theft screw bolt applied to roadways, railways, airports and other places where guardrails need to be mounted.

Description

The needle-type anti-theft bolt

Technical field:

The utility model relates to a kind of fastening piece, particularly relates to a kind of bolt

Background technique:

Bolts and nuts are machanical fasteners of using always, extremely easy to use need only just can tightening easily with spanner unscrewed, created so for stealer virtually and steal chance easily, various device is disassembled easily steal or destroy and causes enormous economic loss and accident.For thoroughly solving and stop this situation, just become the major issue that to research and solve now.

The utility model content:

The utility model provides a kind of low-cost high-efficiency simple and fast service speed such as same plain nut bolt is installed, and not only can tighten but also stop the bolt of being stolen fast.

The technical problem that solves:

The utility model is that a unidirectional tight anti-theft device of stopping is set on original bolt, is convenient to install, and is non-dismountable again.

The technological scheme that is adopted:

The utility model is at the tail end of bolt screw rod or sets nut in position that screw rod tightens, the direction that an edge is threaded into is set, vertical half moon groove of not connecting of three faces from deep to shallow, its front end is three right angles, the rear end is connected with the thread of screw rod external diameter, the depths, right angle that cylindrical needle roller after quenching or ball are inserted the half moon groove, circle with rubber band or various materials twines again, in case that needle roller (pearl) thereby come off forms is whole, only need during use bolt is directly screwed in nut, if employing adds the high nut effect then be better; Also can directly be screwed in the obstructed tapped hole on machinery, the equipment fastening, but derotation bolt, the inclined-plane is along with screw rod rotates at the bottom of the first quarter moon alveolus on the screw rod, it is tight progressively needle roller (pearl) to be pushed to stop between the internal screw thread of tapped hole, and needle roller (pearl) has stoped bolt to continue derotation to reach the derotation tight anti-theft effect of stopping; If anti-pitch thread then can that its anti-theft effect oppositely is set be identical with doing crescent shaped groove.

The beneficial effects of the utility model:

Be improve bolt, cut the waste, quick mounting, derotation stop tightly.

Figure of description:

Fig. 1-1 trough of belt bolt (plan view);

Fig. 1-2 trough of belt bolt (sectional view);

Fig. 2-1 needle roller (pearl) formula anti-theft bolt (plan view);

The position (sectional view) of Fig. 2-2 needle roller (pearl) in bolt indentation;

Needle roller in Fig. 3 installation process (pearl) formula anti-theft bolt (plan view);

Needle roller (pearl) formula anti-theft bolt (plan view) after Fig. 4-1 installs;

Needle roller (pearl) the position (sectional view) bolt indentation in of Fig. 4-2 bolt after by derotation;

Among Fig. 1-Fig. 4:

1. trough of belt bolt;

2. needle roller or ball;

3. rubber band or other circle;

4. nut;

5. iron plate;

6. iron plate;

7. equipment.

Embodiment:

Below in conjunction with accompanying drawing the utility model specifically is described below:

Embodiment 1

As shown in Figure 2: the utility model is inserted needle roller or ball 2 in the half moon groove of trough of belt bolt 1, wraps up in needle roller (pearl) the formula anti-theft bolt that twines with rubber band 3 again;

Embodiment 2

As shown in Figure 3: needle roller (pearl) formula anti-theft bolt is inserted the tapped hole that screws in again in iron plate 5 holes on the equipment 7, because of rubber band 3 is revolved the position that presses to bolt head greater than tapped hole;

Embodiment 3

Shown in Fig. 4-1: after needle roller (pearl) formula anti-theft bolt and nut 4 were fastening, rubber band 3 position between nut 4 (equipment 7) and iron plate 5 was crushed or crushes and comes off;

Embodiment 4

Shown in Fig. 4-2: after needle roller or ball type anti-theft bolt were subjected to derotation power, its needle roller or the ball 2 internal thread cusp of rear end, inclined-plane and nut 4 at the bottom of the semicircle crescent of trough of belt bolt 1 was stopped tightly

The foregoing description limits the utility model never in any form, and all employings are equal to the technological scheme that mode obtained of replacement or equivalent transformation, all drop within the protection domain of the present utility model.

Claims (2)

1. needle-type anti-theft bolt, it is characterized in that the screw rod tail end or set nut that establish direction that an edge is threaded into by going deep into shallow vertical half moon groove, its big end is dark in the position that bolt tightens, small end is connected with the thread of screw rod external diameter, and said needle roller is cylindrical iron staff.

2. needle-type anti-theft bolt according to claim 1 is characterized in that the needle roller in groove uses the rubber band double team with Drop-proof, and rubber band squeezes broken coming off naturally in the installation process.

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