CN100507287C

CN100507287C - An anti-theft bolt and its matched special wrench

Info

Publication number: CN100507287C
Application number: CNB2007100268956A
Authority: CN
Inventors: 陈伟明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-02-09
Filing date: 2007-02-09
Publication date: 2009-07-01
Anticipated expiration: 2027-02-09
Also published as: CN101016917A

Abstract

The anti-theft bolt comprises a bolt body and a nut, wherein the nut of the bolt is a cylinder and is provided with threads in the same direction as the threads of the bolt body on the side surface, and the upper end of the nut is provided with a fixing block or a fixing groove. A positioning sheet is arranged between the screw cap and the bolt body. The special spanner for the anti-theft bolt has a tubular clamping end and threads on the inner walls of the two ends of the clamping end. The screw thread of one end is matched with the screw cap of the anti-theft bolt, and the other end is provided with a clamping rod with screw thread which is matched and movably connected with the screw thread of the other end. The inside of clamping end is equipped with the clamp bolt rather than sliding connection, and clamp bolt one end is equipped with and presss from both sides tight groove or the clamp block of bolt fixed block or fixed slot assorted, and the other end rotates with the clamping bar and is connected. The bolt opening device has the advantages that the bolt cannot be opened by using a non-special tool, and the anti-theft bolt cannot be opened under the condition that the fixing block or the fixing groove of the anti-theft bolt is not matched with the clamping bolt of the wrench.

Description

A kind of anti-theft bolt and the special spanner supporting with it

Technical field

The present invention relates to anti-theft tool, particularly a kind of anti-theft bolt and the special spanner supporting with it.

Technical background

At present a lot of urban operating mechanisms often suffer to steal, usurp, destroy, for example manhole cover, street lamp facility, cable etc.These facilities do not use effective anti-theft measure when installing or only use simple tapered end antitheft, cause these facilities to be stolen easily and destroy.And the cost of production that has the higher antitheft equipment of Security now is higher, should not use in a large number.

Summary of the invention

The present invention is a kind of anti-theft bolt and the special spanner supporting with it, its main purpose is that this anti-theft bolt need cooperate corresponding special-purpose wrench to use, under the situation of not using supporting special-purpose wrench, be difficult to demounting bolt, effectively prevent larceny, and applied range is arranged, can be different users and be equipped with different screws and special-purpose wrench, safe characteristics, production difficulty low cost is low, is fit to be widely used on the various device, and is firm in structure durable.

The present invention is achieved through the following technical solutions above-mentioned technical purpose:

A kind of anti-theft bolt comprises key and nut, and the nut of this bolt is cylindrical body and is provided with the screw thread identical with the key hand of spiral on the side, is provided with fixed block or fixed groove in the nut upper end.Be provided with location piece between nut and the key, when using this anti-theft bolt, location piece plays the effect of clamping.The benefit of such design is to use common pliers or other non-special tools to open bolt.

Set fixed block or fixed groove are spherical, cone shape or frustoconic shape on the nut of anti-theft bolt, fixed block or fixed groove volume are less, only need to change its shape size and promptly can be the anti-theft bolt that different user is equipped with special use, She Ji benefit is to design different dress instruments according to different clients like this.Anti-theft bolt is difficult for being turned on by common pliers or other common tool.Even the use special tool can not be complementary with the fixed block or the fixed groove of anti-theft bolt, also is to open bolt.

Be provided with on fixed block or the fixed groove that tiny frictional groove can increase and special tool between frictional force, anti-theft bolt is fixed and opened to the special tool that conveniently is complementary.Location piece shape between nut and the key is circular, and location piece can be made one with nut, and the diameter of nut is greater than the diameter of key when just producing.Location piece can play the effect of clamping, location, makes processing of integrated convenient anti-theft bolt and production with nut, reduces cost, and increases bolt arrangement stability.

A kind of special spanner that is used for above-mentioned anti-theft bolt, spanner pinching end are tubulose, are provided with screw thread on the inwall at pinching end two ends.Wherein the nut of the screw thread of an end and above-mentioned anti-theft bolt is complementary, and plays the fixedly effect of anti-theft bolt, and the screw-thread fit that the other end is provided with threaded clamp lever and this end flexibly connects, can be along the direction activity of screw thread when clamp lever rotates.Being provided with clamping bolt in the inside of pinching end is slidingly connected with it, can slide at the pinching end internal freedom, one end of clamping bolt is provided with clamping slot or the clamp that is complementary with above-mentioned bolt piece or fixed groove, and the other end and clamp lever are rotationally connected, and can follow clamp lever and move up and down.This special-purpose cooperation can be opened the above-mentioned anti-theft bolt that matches, and is to open anti-theft bolt under the unmatched situation of clamping bolt of the fixed block of anti-theft bolt or fixed groove and wrench.

The present invention contrasts prior art and has following advantage:

Utilization structure of the present invention is simple, sturdy and durable, be easy to processing.

Applied range can be different users and is equipped with different screws and special-purpose wrench, has safe characteristics.

The production difficulty is low, cost is low, is fit to be widely used on the various device.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further described:

Fig. 1 is the embodiment of the invention one an anti-theft bolt structural representation;

Fig. 2 is the embodiment of the invention one an anti-theft bolt cross-sectional view;

Fig. 3 is the embodiment of the invention two anti-theft bolt cross-sectional view;

Fig. 4 is the embodiment of the invention three anti-theft bolt structural representations;

Fig. 5 is the supporting special spanner structural representation of the embodiment of the invention one;

Fig. 6 is the embodiment of the invention one a user mode structural representation;

The clamping bolt cross-sectional view of Fig. 7 position embodiment of the invention two special spanners.

Embodiment

Embodiment one: as shown in Figure 1, anti-theft bolt comprises key 1 and nut 2, and the nut 2 of this bolt is cylindrical body and is provided with and the identical screw thread of key 1 hand of spiral that key 1 can be one-body molded with nut 2 on the side, convenient production.Be provided with fixed block 14 in nut 2 upper ends and fixedly connected, also can when producing, key 1, nut 2 and fixed block 14 be made one with it.As shown in Figure 2, be provided with location piece 3 between nut 2 and the key 1, location piece 3 is fixedlyed connected with key 1.Such design benefit is to use common pliers or other non-special tools to open bolt.

Set fixed block 14 is taper types on the nut 2 of anti-theft bolt as shown in Figure 1, fixed block 14 volumes are less, be difficult for being clamped by common pliers, but can be clamped by special tool, She Ji anti-theft bolt is difficult for being turned on by common pliers or other common tool like this.Fixed block 14 be provided with that tiny frictional groove 5 can increase and special tool between frictional force, anti-theft bolt is fixed or opened to the special tool that conveniently is complementary.Location piece 3 shapes between nut 2 and the key 1 are circular as shown in Figure 2, and location piece 3 can be made one with nut 2, and the diameter of nut 2 also can be soldered on the nut 2 greater than the diameter of key 1 when just producing.Can play the effect of clamping, location.

The special spanner of anti-theft bolt is made up of pinching end 51 and handle 52 as shown in Figure 5, and spanner pinching end 51 is a tubulose, is provided with screw thread on the inwall at pinching end 51 two ends.As Fig. 1, shown in Figure 5, wherein the screw thread 56 of an end is complementary with the nut 2 of above-mentioned anti-theft bolt, plays the fixedly effect of anti-theft bolt.As shown in Figure 5, the screw-thread fit that the other end is provided with threaded clamp lever 53 and this end flexibly connects, can be along the direction activity of screw thread when clamp lever 53 rotates.Be provided with clamping bolt 54 in the inside of pinching end 51 and be slidingly connected, clamping bolt 54 can be slided at pinching end 51 internal freedoms with it.As Fig. 2, shown in Figure 5, clamping bolt 53 1 ends are provided with the clamping slot 55 that is complementary with above-mentioned anti-theft bolt frustoconic shape fixed block 14, and another section is rotationally connected with clamp lever 53, can follow clamp lever 53 and move up and down.This special spanner cooperates can open the above-mentioned anti-theft bolt that matches, and is to open anti-theft bolt under the clamping bolt 54 unmatched situations of the fixed block 14 of anti-theft bolt and wrench.

When installing and using this anti-theft bolt,, the nut 2 of anti-theft bolt is screwed in the screw thread 56 of special spanner pinching end 51 as Fig. 2, shown in Figure 5.Rotate clamp lever 53 then, allow clamp lever 53 to anti-theft bolt one side shifting is housed, at this moment clamping bolt 54 is also slided to anti-theft bolt one side is housed, clamping slot 55 on the last clamping bolt 54 matches with the frustoconic shape fixed block 14 on the anti-theft bolt, at this moment clamping bolt 54 has been fixed anti-theft bolt, just can utilize special spanner that the key of anti-theft bolt is screwed in the object that will fix then.

As shown in Figure 6, fixture can be provided with location piece 3 and the nut 2 that bolt slot 62 holds the anti-theft bolt that is exposed to the fixture outside, and the width of bolt slot 62 can hold pinching end 51 portion's rotation within it of special spanner.During the anti-theft bolt fixed object, utilize special spanner with in the anti-theft bolt push bolt groove 51, rotate special spanner and tighten anti-theft bolt, the upper strata fixture 61 that will have bolt slot 62 is fixed together with lower floor's fixture 63.Behind the anti-theft bolt fix in position, as shown in Figure 5, rotate clamp lever 53, allow clamp lever 53 drive clamping bolt 54 away from anti-theft bolt, rotate special spanner then and break away from by nut 14 and pinching end 51.Nut 14 in bolt slot 62 is difficult to be clamped by common pliers more, has so just played the effect of putting the robber.

Embodiment two: as shown in Figure 3, present embodiment and embodiment's one structure is basic identical, and difference is that nut 2 tops of anti-theft bolt are provided with clamping slot 24.The clamping bolt 54 of special spanner is provided with the clamp 75 that is complementary with fixed groove 24 as shown in Figure 7.She Ji benefit is that the fixed groove 24 on the nut 2 is difficult to clamp the theftproof performance of the anti-theft bolt of increase to common pliers like this.

Embodiment three: as Fig. 1, shown in Figure 4, the anti-theft bolt structure of present embodiment and embodiment one structure are basic identical, between difference be location piece 3 and nut 2 are made one.As shown in Figure 4, the diameter of nut 2 is greater than key 1 in the time of production, and nut 2 projections just can play the effect of location.Design can be one-body molded when producing like this, and simplified structure is saved the operation of producing, thereby reduced cost, and structure stability is stronger, long service life.

Claims

1. An anti-theft bolt, comprising a bolt body and a nut, characterized in that the nut is a cylinder and is provided with the same thread direction as the bolt body on the side of the nut, and is provided with a fixed block at the upper end of the nut Or fixing slot; a positioning piece is arranged between the nut and the bolt.

2. The anti-theft bolt according to claim 1, characterized in that the fixing block or the fixing groove is in the shape of a spherical crown, a cone, a truncated cone or a truncated cone.

3. The anti-theft bolt according to claim 2, characterized in that a friction groove is provided on the fixing block or the fixing groove.

4. The anti-theft bolt according to claim 3, characterized in that the shape of the positioning piece is circular.

5. A special wrench for opening the anti-theft bolt according to any one of claims 1 to 4, consisting of a clamping end and a handle, characterized in that the clamping end of the wrench is tubular, and the inner walls of both ends are provided with threads , the thread at one end matches the thread on the side of the nut, the other end is provided with a threaded clamping rod, which is movably connected with the thread at the other end, and the clamping end is provided with a clamp that slides with it. Tightening bolt, one end of the clamping bolt is provided with a clamping groove or clamping block matching the above-mentioned bolt fixing block or fixing groove, and the other end is rotatably connected with the clamping rod.