Anti-theft fastener

Abstract

Some embodiments discloses an anti-theft fastener, comprising: a base, a locking block, a first connecting part and a second connecting part; wherein the base comprises a supporting block and a first fastening part; the supporting block comprises a grip portion and an assembly portion; the locking block comprises an underplate and a second fastening part; the second fastening part is arranged at the underplate; when the base and the locking block connect with each other, the locking block is partially or entirely contacted with the assembly portion, the first fastening part and the second fastening part are connected actively and detachable, the base and the locking block of the anti-theft fastener can be separately connected to two objects or two parts of the same object by the first connecting part and the second connecting part.

What is claimed is: 
     
         1 . An anti-theft fastener, comprising: a base, a locking block, a first connecting part and a second connecting part; the first connecting part is connected to the base; the second connecting part is connected to the locking block; wherein,
 the base comprises a supporting block and a first fastening part; the supporting block comprises a grip portion and an assembly portion; the first fastening part is arranged at the assembly portion; the locking block comprises an underplate and a second fastening part; the second fastening part is arranged at the underplate; the base and the locking block may connect or disconnect with each other; when the base and the locking block connect with each other, the locking block is partially or entirely contacted with the assembly portion, the first fastening part and the second fastening part are flexibly connectable and detachable.   
     
     
         2 . The anti-theft fastener according to  claim 1 , wherein, the first connecting part and the second connecting part are both flexible connecting parts. 
     
     
         3 . The anti-theft fastener according to  claim 1 , wherein, the assembly portion is a first insertion chamber; the first fastening part is an inner lateral wall of the first insertion chamber; the assembly portion is provided with a tunnel; the second fastening part extends outwards from the side of the underplate; the second connecting part is arranged at the bottom surface of the underplate; when the base and the locking block connect with each other, the locking block passes through the tunnel from the bottom surface of the supporting block and then entirely fits into the first insertion chamber, the first fastening part is contacted with the second fastening part. 
     
     
         4 . The anti-theft fastener according to  claim 3 , wherein, the tunnel is a linear tunnel; the locking block vertically passes through the tunnel, and then horizontally fits into the first insertion chamber, the bottom surface of the underplate is contacted with the upper surface of the first insertion chamber. 
     
     
         5 . The anti-theft fastener according to  claim 1 , wherein, the first fastening part is a groove or a protruding insert; the second fastening part is a protruding insert or a groove; when the base and the locking block connect with each other, the first fastening part and the second fastening part engage with each other. 
     
     
         6 . The anti-theft fastener according to  claim 5 , wherein, the first fastening part is a groove; the second fastening part is a protruding insert; the assembly portion is a second insertion chamber or an inserting slot; when the base and the locking block connect with each other, the locking block entirely fits into the second insertion chamber or the inserting slot, the bottom surface of the underplate is contacted with the second insertion chamber or the inserting slot; the first fastening part and the second fastening part engage with each other. 
     
     
         7 . The anti-theft fastener according to  claim 5 , wherein, the bottom surface of the underplate is provided with a locating pin or a tooling hole; the upper surface of the assembly portion is provided with a tooling hole or a locating pin; when the base and the locking block connect with each other, the locating pin fits into the tooling hole. 
     
     
         8 . The anti-theft fastener according to  claim 1 , wherein, a connection way for the first fastening part and the second fastening part is adhesion. 
     
     
         9 . The anti-theft fastener according to  claim 1 , wherein, the first fastening part is a magnet or an iron sheet; the second fastening part is an iron sheet or a magnet; when the base and the locking block connect with each other, the first fastening part and the second fastening part contact and attract by magnetic force. 
     
     
         10 . The anti-theft fastener according to  claim 9 , wherein, the underplate is provided with a locating slot or a locating block; the assembly portion is provided with a locating block or a locating slot; when the base and the locking block connect with each other, the locating block fits into the locating slot.