CN2252271Y

CN2252271Y - Anti-theft bolt for number plate on vehicle

Info

Publication number: CN2252271Y
Application number: CN 96234975
Authority: CN
Inventors: 张染; 陈军
Original assignee: YINHE COMPUTER FACTORY CHANGSHA DEFENCE SCIENCE AND TECHNOLOGY UNIV
Current assignee: YINHE COMPUTER FACTORY CHANGSHA DEFENCE SCIENCE AND TECHNOLOGY UNIV
Priority date: 1996-05-31
Filing date: 1996-05-31
Publication date: 1997-04-16
Anticipated expiration: 2006-05-31

Abstract

The utility model discloses an anti-theft bolt for a number plate on a vehicle, which is composed of a threaded rod 4, a screwhead 3, a screwhead tightening head 1, a screw cap body 6, a screw cap tightening head 7. The utility model is characterized in that the screwhead 3 and the screw cap body which present a round table or a ball table are respectively connected with the screwhead tightening head 1 and the screw cap tightening head 7 by two cylinders 2, 8; the diameters of the cylinders 2, 8 are 1/2-1/6 of the diameters of the threaded rod. When the utility model is installed and screwed tightly, the tightening head 1, 7, and the cylinders 2, 8 are knocked off. The utility model has the advantages that the utility model can not be dismantled by using spanners, screwdrivers, etc.; the function of guarding against theft is good; the cost is low; the operation is convenient, etc. The utility model can be used on various number plates on vehicles.

Description

The license-plate anti-theft bolt

The utility model belongs to a kind of mechanical parts, especially relates to a kind of fixing bolt that prevents that car plate is stolen.

In the prior art, automobile, the fixing bolt that car plates such as motorcycle are used, be easy to use bottle opener, general tools such as spanner are unloaded down, stolen (the especially military car plate of car plate takes place easily, People's Armed Police's car plate, the public security car plate) phenomenon, the false proof fixing device of the disclosed a kind of license-plate anti-theft of Chinese patent ZL89214736.9, it is that Theft-proof and anti-counter cap deck is installed on bolt head, the Theft-proof and anti-counter cap snaps in the deck, it is compared with the ordinary fixed bolt has certain anti-theft feature, but the Theft-proof and anti-counter cap still is easy to open with the pointed tool sledge of bottle opener and so on, and anti-theft effect is bad.

The purpose of this utility model is to disclose a kind of license-plate anti-theft bolt that can't dismantle with common tools such as bottle opener, spanners, has advantages such as anti-theft feature is strong, cost is low, enforcement is easy, easy and simple to handle, can extensively use on the car plate of all kinds of automobiles, motorcycle.

The technical solution of the utility model is, it partly is made up of bolt portion and nut, bolt portion is made up of screw rod, screw head and screw fastener head, the nut part is made up of nut body and nut fastener head, it is characterized in that: screw head is round platform or billiard table shape, and by a cylindrical body link to each other with the screw fastener head formation one; Nut body is round platform or billiard table shape, and by a cylindrical body link to each other with the nut fastener head formation one; Two cylindrical diameters are 1/2～1/6 of screw diameter.

Screw fastener head and nut fastener head can be hexagon posts or at last having " " word fluting, use during for spanner, bottle opener work.

Can there be a cylinder type hollow zone in the bottom centre of nut body, when using the utility model to install spring sheet additional, is used for placing and hiding spring sheet, the thickness after the degree of depth in cylinder type hollow zone is preferably spring sheet and compresses.

When the utility model uses, car plate and pad etc. is inserted in the screw rod of the present utility model, and be placed on the position of intend installing, spring sheet is put into the cylinder type hollow zone of nut body, use instruments such as spanner, bottle opener by screw fastener head of the present utility model and nut fastener head bolt portion and nut partly to be tightened respectively, use hammer that screw fastener head of the present utility model and nut fastener head are knocked out together with corresponding cylindrical body then.Because screw head and nut body are round platform or billiard table, can't dismantle with instruments such as spanner, bottle openers.

When the utility model uses, can on screw head, put disclosed the sort of Theft-proof and anti-counter cap deck equally again as Chinese patent ZL89214736.9, after installing, with bolt portion with nut is partly tightened and screw fastener head of the present utility model and nut fastener head are knocked out together with corresponding cylindrical body, and then the Theft-proof and anti-counter cap of correspondence snapped in the deck get final product.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is a plan view of the present utility model.

Fig. 2 is the left view of the utility model bolt portion.

Fig. 3 is the left view of the utility model nut part.

Fig. 4 is the right elevation of the utility model nut part.

Fig. 5 is the position view after the utility model is installed the back and removed out screw fastener head and nut fastener head and corresponding cylindrical body.

In the accompanying drawing: 1, screw fastener head, 2, cylindrical body, 3, screw head, 4, screw rod, 5, " one " word fluting, 6, nut body, 7, nut fastener head, 8, cylindrical body, 9, " one " word fluting, 10, the cylinder type hollow zone, 11, spring sheet, 12, car plate, 13, pad, 14, the vehicle license plate mounting bracket.

Referring to Fig. 1, Fig. 2, screw rod 4, screw head 3, cylindrical body 2 and screw fastener head 1 are an integral body, and material adopts the 45# steel, and the diameter of screw rod 4 is 6mm, and length is 15mm, and has attacked screw thread; The diameter of cylindrical body 2,8 is 2.5mm, highly is 2mm; Screw head 3 is the round platform of base diameter 10mm, upper diameter 2.5mm, height 5mm; Screw fastener head 1 is a hexagon posts, is 3mm highly, and has " one " word fluting 5.

Referring to Fig. 1, Fig. 3, Fig. 4, nut body 6, cylindrical body 8 and nut fastener head 7 are an integral body, material adopts the 45# steel, nut body 6 is the round platform of a base diameter 20mm, upper diameter 2.5mm, height 10mm, it is that 6mm, the degree of depth are the screw thread of 6mm that diameter is attacked in the bottom, and digs the cylinder type hollow zone 10 of a diameter 12mm, degree of depth 2mm; Nut fastener head 7 is a hexagon posts, is 3mm highly, and has " one " word fluting 9.

Referring to Fig. 5, Fig. 4, Fig. 1, be with pad 13, car plate 12 etc. on the screw rod 4, and be positioned on the vehicle license plate mounting bracket 14, spring sheet 11 is put into cylinder type hollow zone 10, after tightening, screw fastener head 1 and nut fastener head 7 are knocked out together with corresponding cylindrical body 2,8, can use.

Claims

1, a kind of license-plate anti-theft bolt partly is made up of bolt portion and nut, and bolt portion is made up of screw rod 4, screw head 3 and screw fastener head 1, and the nut part is made up of nut body 6 and nut fastener head 7, it is characterized in that:

A, screw head 3 are round platform or billiard table shape, and by a cylindrical body 2 link to each other with screw fastener head 1 formation one;

B, nut body 6 are round platform or billiard table shape, and by a cylindrical body 8 link to each other with nut fastener head 7 formation one;

The diameter of c, two cylindrical bodys 2,8 is 1/2～1/6 of screw rod 4 diameters.

2, according to the described license-plate anti-theft bolt of claim 1, it is characterized in that: screw fastener head 1 and nut fastener head 7 are hexagon posts or have " one " word to slot last.

3, according to claim 1 or 2 described license-plate anti-theft bolts, it is characterized in that: there is a cylinder type hollow zone 10 in the bottom centre of nut body 6.