CN2215623Y - Theft-proof device for fasteners - Google Patents

Abstract

The utility model relates to a theft-proof device for fasteners. The utility model is provided with a casing; a component which is composed of a lock core and a lock tube is arranged in the casing; the lock core is connected with a bolt. Driven by the lock core, the bolt is capable of rotating in a transversal groove which is arranged on the casing. An inward flange is arranged on the bottom of the casing. A fastener can be limited between the component and the flange. The lock tube is connected with the casing in a connection mode of relative sliding movement to longitudinal direction without rotary movement. A first longitudinal groove which is connected with the transversal groove and is capable of causing the component and the bolt to withdraw and load from the casing is arranged on the casing. The utility model can prevent theft from stealing through discharging the fastener.

Description

Theft-proof device for fasteners

The utility model relates to a kind of anti-theft device, particularly relates to a kind of anti-handler that is used for bolt, nut.

Various bolts, the nut of extensive use at present, as long as use corresponding general tool to load and unload, for example, bolt that the gear box cover of oil-field oil pumper and drain oil are used and nut.Some lawless persons utilize spanner to lay down bolt, take off loam cake or unload drain oil and steal machine oil in the gear-box.Because no oil cools off and lubricated in the gear-box, causes the gear in the whole gear-box all to scrap, bring for the production in oil field and seriously influence, in addition, the thief uses the mode that unloads bolt, nut always and carries out various thefts.

The purpose of this utility model provides a kind of fastening piece anti-theft device.

Be used to realize a kind of fastening piece anti-theft device of the utility model purpose, said device has a housing, be installed in the assembly that constitutes by lock core and lock tube in the said housing, on said lock core, connect a dead bolt, said dead bolt can be driven by lock core and rotate in a transverse groove that is opened on the housing, the bottom of said housing has an inside flange, one fastening piece can be limited between said assembly and the flange, adopt between said lock tube and the housing and can slide with respect to longitudinal direction, but Ke Zhuandong mode does not connect, and on said housing, have one and link to each other, and first cannelure that said assembly and dead bolt are withdrawed from from housing and pack into transverse groove.

The utility model has solved the problem of lawless person with general tool demounting bolt, nut theft, has guaranteed the safety of country and personal property.

The purpose of this utility model, effect and structure are described by the embodiment below in conjunction with accompanying drawing will become more clear.

Fig. 1 is an embodiment's of the utility model a generalized section.

Fig. 2 is the generalized section along II among Fig. 1-II hatching line.

Fig. 3 is the special tool schematic representation that is used to load and unload fastening piece.

Referring to Fig. 1 and 2, anti-theft device of the present utility model has a housing 1, the assembly 4 that is made of lock core 2 and lock tube 3 in the housing 1 is installed, this assembly 4 can be made of the lock core and the lock tube of bullet lock, connect a dead bolt 5 on lock core 2, this dead bolt 5 can directly be riveted on the lock core 2, also can connect by transition plate, certainly, Placement is diversified.On housing 1, have a transverse groove 6, dead bolt 5 can be driven at transverse groove 6 by lock core 2, dead bolt 5 can be driven in transverse groove 6 by lock core 2 and rotate, and on housing 1, also have one and link to each other with transverse groove 6, and first cannelure 7 that assembly 4 and dead bolt are withdrawed from from housing and pack into.Having an inside flange 8, one fastening pieces 9 can be limited between assembly 4 and the flange 8 in the bottom of housing 1.

Adopt between lock tube 3 and the housing 1 and can slide, but rotatable mode connects, adopt polygonal, be preferably Hexagon as the inner periphery of lock tube 3 and outer periphery and housing 1 with respect to longitudinal direction.Also can be provided with a locating stud 10 on lock tube 3, have second cannelure 11 on housing, locating stud 10 can insert in second cannelure 11.Certainly, also can not establish second cannelure 11 on housing 1, this second cannelure 11 is replaced by first cannelure 7, and promptly second cannelure 11 and first cannelure 7 are same groove, can make structure simpler like this.

In the utility model, fastening piece 9 can be a bolt, also can be nut, hexagonal socket nut preferably, and when adopting bolt, its nut can be interior hexagon.Like this, promptly available inner hexagon spanner loading and unloading fastening piece 9.

For making the utility model have more Security, bolt need not in hexagon nut shape, but flat head.On nut, have at least one eccentric handling hole 12 that is provided with, so that with special tool 13 assembling-disassembling bolts.Referring to Fig. 3, this special tool 13 comprises a tool body 14, the handle 15 that links to each other with main body 14 and eccentric at least one biasing post 16 that is provided with on main body.

For preventing that rainwater and dust etc. from influencing the work of assembly, can be on housing 1 a hinged protecting cover 17 that is used for guard assembly 4.

During installation, earlier fastening piece 9 is inserted in the housing 1, fastening piece 9 is tightened, fixture 18 is fixed on the matrix 19 with inner hexagon spanner or special tool of the present utility model 13.Then with assembly 4 and with dead bolt 5 levelling, insert again in the housing 1, with key (among the figure picture) rotational lock core 2 dead bolt 5 is changed in the transverse groove 6 from first cannelure 7, extract key, assembly 4 promptly is locked in the housing 1.

During dismounting, dead bolt 5 is turned to first cannelure, 7 places, can take out assembly 4, pull down fastening piece 7 with interior hex wrench or special tool 13 then with key.

As not having key and above-mentioned special tool 13, the lawless person can not unload fastening piece with conventional instrument.

Claims (10)

1, a kind of fastening piece anti-theft device, it is characterized in that, said device has a housing, be installed in the assembly that constitutes by lock core and lock tube in the said housing, on said lock core, connect a dead bolt, said dead bolt can be driven by lock core and rotate in a transverse groove that is opened on the housing, the bottom of said housing has an inside flange, one fastening piece can be limited between said assembly and the flange, adopt between said lock tube and the housing and can slide with respect to longitudinal direction, but Ke Zhuandong mode does not connect, and has one link to each other with transverse groove on said housing, and first cannelure that said assembly and dead bolt are withdrawed from from housing and pack into.

2, anti-theft device according to claim 1 is characterized in that, adopts polygon structure between said lock tube and the housing.

3, anti-theft device according to claim 1 is characterized in that, a locating stud that can be inserted in second cannelure of offering on the housing is arranged on the said lock tube.

4, anti-theft device according to claim 3 is characterized in that, said second cannelure and said first cannelure are same cannelure.

According to the anti-theft device described in any in the claim 1 to 4, it is characterized in that 5, said fastening piece is a bolt.

According to the anti-theft device described in any in the claim 1 to 4, it is characterized in that 6, said fastening piece is a hexagonal socket nut.

7, anti-theft device according to claim 5 is characterized in that, the nut of said bolt is interior hexagon.

8, anti-theft device according to claim 5 is characterized in that, has at least one handling hole on said bolt.

9, anti-theft device according to claim 8 is characterized in that: the instrument that is used to load and unload said bolt comprises a tool body, the handle that links to each other with said main body and eccentric at least one biasing post that is provided with on main body.

10, anti-theft device according to claim 1 is characterized in that, a hinged protecting cover that is used to protect said assembly on said housing.

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