CN201297321Y

CN201297321Y - Antitheft screw bolt and special tool thereof

Info

Publication number: CN201297321Y
Application number: CNU2008202021534U
Authority: CN
Inventors: 陈伟明
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-17
Filing date: 2008-10-17
Publication date: 2009-08-26
Anticipated expiration: 2018-10-17

Abstract

The utility model relates to an antitheft screw bolt and a special tool thereof. The antitheft screw bolt comprises a screw stem and a screw cap which are integrally connected together, wherein the screw cap is provided with positive threads and inverse threads, and the inverse threads and the positive threads intersect and have opposite thread direction. The special tool of the antitheft screw bolt is in a compasses shape and comprises a primary working beam and a secondary beam; the primary working beam is provided with a primary screw hole or primary screw threads matched with the positive threads; and the secondary working beam is provided with a secondary screw hole or secondary screw threads matched with the inverse threads. The utility model is simple and practical and convenient to carry, has low cost and can be widely used for fixing outdoor facilities and equipment; different screw bolts and special tools unlocking tools can be provided for different users; the antitheft screw bolt is hard to disassemble without using the special tool matched with the antitheft screw bolt, thereby effectively guarding against theft and offering effective safety guarantee for outdoor equipment.

Description

A kind of anti-theft bolt and special tool thereof

Technical field

The utility model relates to a kind of bolt, is meant a kind of outdoor anti-theft bolt and supporting special opening instrument thereof especially.

Background technique

Have stable political situation community installations, equipment of at present a lot of cities often suffers to steal, usurp, destroy, for example manhole cover, street lamp facility, cable etc.These facilities, equipment do not use effective anti-theft measure when installing or only use simple tapered end antitheft, cause these facilities, equipment to be destroyed easily and to be stolen.And the cost of production that has the higher antitheft equipment of Security now is higher, and input-output ratio is low, should not use on a large scale.

The model utility content

The problem that the utility model need solve provides a kind of simple and practical anti-theft bolt and supporting special opening instrument thereof.

Problem according to above-mentioned required solution has designed a kind of anti-theft bolt, comprises the screw rod and the nut that fuse, and its profile is similar to plain bolt.On pane, be provided with the forward screw thread, and with the forward screw thread intersects and hand of spiral is opposite minus thread.Described forward screw thread is provided in a side of pane, and minus thread is provided in a side of the surface of forward screw thread; Also can be to have a counterbore at the nut top, the forward screw thread is located on the counterbore hole wall that minus thread is located at the surface that pane also can be provided in a side of forward screw thread in the counterbore.These two kinds of bolts that forward screw thread and minus thread are located on nut surface or the counterbore inwall are simultaneously adding man-hour, leave trapezoidal forward screw thread earlier on nut, are leaving minus thread in the forward thread surface then.This anti-theft bolt can be according to the needs of different user, for anti-theft bolt is equipped with difform counterbore screw thread and minus thread.

Because special moulding, screwing and opening of the utility model anti-theft bolt must be used special special opening instrument.This instrument is a compass shaped, is made up of main working beam, subtask bar; The working end of main working beam be provided with bolt on forward the screw thread main screw or the main thread that are complementary.The working end of subtask bar be provided with bolt on the structure that is complementary of minus thread, this matching structure is secondary screw or the deputy thread that is complementary with minus thread.This special tool can be made cross like spanner shape or T type spanner shape in actual the use.

The utility model is simple and practical, volume is little and sturdy and durable, be easy to processing, cost is low, except that nut need select for use as the case may be special-purpose form, supporting nut is a universal standard part; Can be widely used in the fixing of external facilities, equipment, can be different users and be equipped with different bolts and special opening, under the situation of not using supporting special tool, be difficult to demounting bolt, can effectively check larceny, for outdoor equipment provides effective safety guarantee.

Description of drawings

Fig. 1 is the utility model embodiment one a structural representation;

Fig. 2 is the utility model embodiment two a structural representation;

Fig. 3 is the A-A cut-away view of Fig. 2;

Fig. 4 is the utility model embodiment two a partial sectional view;

Fig. 5,6 is the utility model two kinds of form embodiment complete section structural representations in addition;

Fig. 7 cuts open schematic representation for the utility model embodiment one supporting special tool partial structurtes;

Fig. 8 cuts open schematic representation for the utility model embodiment two supporting special tool partial structurtes;

Fig. 9 is the supporting special tool structural representation of the utility model embodiment three.

Embodiment

With reference to the accompanying drawings model utility is described in further detail below.The main working beam 6 and the subtask bar 7 that mainly comprise screw rod 1, nut 2, forward screw thread 3, minus thread 4 and the composition compass shaped special tool of anti-theft bolt among the figure.

Fig. 1 is a kind of basic enforcement of the present utility model, and illustrated bolt is made of screw rod 1 that fuses and nut 2, and its profile is similar to plain bolt.Model utility point of the present utility model is that nut 2 sides are provided with forward screw thread 3, and with forward screw thread 3 intersects and hand of spiral is opposite minus thread 4, described forward screw thread 3 is provided in a side of the trapezoidal thread of pane, minus thread 4 is provided in a side of the surface of forward screw thread 3, She Ji benefit is that this anti-theft bolt is difficult for being dismantled by common screwdriver set like this, only needs change forward screw thread 3 promptly to can be different user with the shape of minus thread 4 with size and is equipped with different anti-theft bolts.

The structural similarity of anti-theft bolt shown in Fig. 2,3,4 and anti-theft bolt shown in Figure 1.Difference is that nut 2 tops have a counterbore 5 with screw coaxial heart line shown in Fig. 2,3; As shown in Figure 4, forward screw thread 3 is located on counterbore 5 hole walls, and reverse screw thread 4 is located at nut 2 sides, such anti-theft bolt processing, production are simpler, can reduce the cost of production of anti-theft bolt.Anti-theft bolt structural similarity shown in anti-theft bolt as shown in Figure 5 and Fig. 2,3,4, difference is that forward screw thread 3 is set as trapezoidal thread, minus thread 4 is located at forward screw thread 3 surfaces, and nut 2 is processed into flat spherical crown shape, flat spherical crown shape nut 2 is difficult for being clamped by common pliers, and the purpose of She Zhiing is in order further to increase the theftproof performance of anti-theft bolt like this.Anti-theft bolt as shown in Figure 6 and anti-theft bolt structural similarity shown in Figure 5, the district is anti-theft bolt is made countersunk screw, and the screw thread of screw rod 1 is extended to nut 2 sides, and the bolt of She Zhiing can be used for sealing water pipe, gas pipe line end like this.

As shown in Figure 7, this instrument is the special tool that is used to install, dismantle this anti-theft bolt of Fig. 1, and body shape is a compass shaped, is made up of

main working beam

6,7 liang of big parts of subtask bar; Be provided with main screw 61 in the working end of main working beam 6, the working end of subtask bar 7 is provided with secondary screw 71.Main screw 61 and secondary screw 71 are complementary with the forward screw thread 3 and the minus thread 4 of the anti-theft bolt of Fig. 1 respectively, and She Ji special tool can mount and dismount the anti-theft bolt that is complementary fast, easily like this.Instrument shown in Figure 8 is the special tool that is applicable to the anti-theft bolt shown in Fig. 2,3,4,6, and the structure of this instrument and special tool shown in Figure 7 is basic identical, and difference is that the working end of main working beam 6 is main threads 62; As Fig. 4, shown in Figure 6, main thread 62 is complementary with the forward screw thread 4 that is located on counterbore 5 inwalls.Special instrument shown in Figure 9 is applicable to anti-theft bolt shown in Figure 5, and the structure of this instrument and special tool shown in Figure 8 is basic identical, and difference is that the working end of subtask bar 7 is deputy threads 72 that the minus thread 4 with anti-theft bolt shown in Figure 5 is complementary.

During this anti-theft bolt of installation or removal, utilize the forward screw thread 3 of special tool and anti-theft bolt, the structure that minus thread 4 is complementary earlier, very easily anti-theft bolt is fixed on the special tool, rotating special tool then can this anti-theft bolt of installation or removal, and common screwdriver set, pliers all are difficult to dismantle anti-theft bolt.

The foregoing description is one of preferable implementation of the utility model; in addition; the utility model can also other modes be realized; need to prove;, all belong to the infringement trip and be all within protection domain of the present utility model in any conspicuous replacement under the prerequisite that does not break away from inventive concept of the present utility model.

Claims

1, a kind of anti-theft bolt comprises the screw rod (1) and the nut (2) that fuse, it is characterized in that being provided with on nut forward screw thread (3), and with the forward screw thread intersects and hand of spiral is opposite minus thread (4).

2, anti-theft bolt according to claim 1 is characterized in that the forward screw thread is located at pane, and minus thread is provided in a side of the surface of forward screw thread.

3, anti-theft bolt according to claim 1 is characterized in that having counterbore (5) at the nut top, and the forward screw thread is located on the counterbore inwall.

4, anti-theft bolt according to claim 3 is characterized in that minus thread is to be located at forward thread surface in pane or the counterbore.

5, a kind of special tool that is used to open each described anti-theft bolt of claim 1 to 4, the special tool that it is characterized in that compass shaped is made up of main working beam (6), subtask bar (7), the working end of main working beam be provided with bolt on forward the screw thread main screw (61) or the main thread (62) that are complementary, the working end of subtask bar be provided with bolt on the structure that is complementary of minus thread.

6, special tool according to claim 5, the structure that its feature and minus thread are complementary are secondary screw (71).

7, special tool according to claim 5, the structure that its feature and minus thread are complementary are deputy thread (72).