CN2934710Y

CN2934710Y - Automobile license plates anti-theft fastener

Info

Publication number: CN2934710Y
Application number: CN 200620124485
Authority: CN
Inventors: 杨冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-07-26
Filing date: 2006-07-26
Publication date: 2007-08-15
Anticipated expiration: 2016-07-26

Abstract

The utility model relates to a fastener, particularly relates to an anti-theft fastener used on automobile license plate. An axial convex pipe is arranged at one side of the washer of the utility model; the outer periphery of the convex pipe is provided with threads mating the threads inside the bolt cap, and the outer peripheral face of the screw cap is in a circle; the screw rod runs through the convex pipe and washer and spins into the anti-back nut; a convex edge is provided in the convex pipe of the washer; the bolt cap hooks the convex edge; the bolt cap is spun on the convex pipe of the washer, and a decorative cap is provided on the outer cover of the bolt cap. The utility model achieved multiple anti-theft functions, simplified installation process and saved costs by simplifying the details and changing the positional relations.

Description

The license plate for vehicle anti-theft fastening piece

Technical field

The utility model relates to a kind of fastening piece, especially for the anti-theft fastening piece of license plate for vehicle.

Background technique

Fastening piece between current mobility number plate and the Motor Vehicle has overcome in the conventional fastener and to adopt bolt and licence plate intensity relatively poor, the drawback of when fastening, sometimes its fastener hole being damaged, as disclosing a kind of fastening piece among the ZL02285885.7, it adopts EXPANSION ANCHOR BOLTS and utilizes stiffening plate and the combination of expand tube elbow and the flat nose of packing ring is strengthened the licence plate fastener hole, and fastening strength is increased greatly.And after the rounded nut of outer circumferential face tightened by special fastened tools, adopt general instrument it can not to be unclamped, improved theftproof performance greatly.

But still there is deficiency in this kind fastening piece, and its structure is loaded down with trivial details, and the installation procedure complexity has improved the manufacture cost of manufacturer, because decorating cap just links to each other by clamping with nut, does not have any fastening means in addition, does not play antitheft effect, is simple decoration.

Summary of the invention

The purpose of this utility model is to overcome the defective of prior art, provides a kind of and logical can simplify installation procedure, reduces production costs, and can reach multiple antitheft practical motor-driven licence plate fastening piece again.

For achieving the above object, the utility model is achieved through the following technical solutions: a kind of license plate for vehicle anti-theft fastening piece, comprise anti-withdrawing nut, packing ring, bolt and nut, bolt is made up of nuts and bolt shank, nuts is oblate cylinder, it is characterized in that: a side of packing ring has an axial protruding pipe, and the periphery of protruding pipe is with screw thread and matches with the internal thread of described nut, and the outer circumferential face of nut is rounded; The bolt shank of bolt has a side of protruding pipe to pass the anti-withdrawing nut of back screw-in from packing ring, and the protruding pipe inside of packing ring is provided with the convex edge, and nuts is mounted on the convex edge, and nut is spun on the protruding pipe of packing ring.

Described nut also is stamped a decorating cap outward, and the two is connected together, and the following convex edge of decorating cap covers packing ring, makes water or foul can't be seeped into fastening piece inside, and fastening piece is difficult for getting rusty, goes bad.

One side of described anti-withdrawing nut has a protruding terminus, and the inside of protruding terminus is embedded with bath mat, and the internal thread of anti-withdrawing nut matches with the outside thread of bolt, and bolt holds out against on bath mat after screwing in anti-withdrawing nut.

The peripheral opposite side of described packing ring has two inner groovies at least.

The height of described convex edge is higher than packing ring.

Described nuts is provided with straight groove or cross recess.

Compared with prior art, the utlity model has following advantage:

1. because the protruding pipe inside of packing ring of the present utility model is provided with the convex edge, and inner convex edge is higher than external gasket, and the drawback that is easily smashed at grade inside and outside having changed in the past makes the convex edge of articulated bolt be difficult for being pounded disconnected, play antitheft, anti-purpose of pounding, it is antitheft to reach a weight;

2. in addition, when operation the utility model, requirement must be fixed on fastening piece on the bumper of Motor Vehicle, and anti-withdrawing nut is screwed on the bolt that is exposed at the bumper back, so, even preceding twice anti-theft measure is all destroyed, because anti-withdrawing nut does not have fixture, in swivel bolt, nut also can be followed one and be played rotation, be difficult to dismounting, it is antitheft to have reached second weight.

It is multiple antitheft that the utility model has still reached on the basis of having simplified component, simplified installation procedure, saves cost.

Description of drawings

Fig. 1 is an assembled sectional view of the present utility model.

Fig. 2 is a perspective exploded view of the present utility model.

Fig. 3 is the schematic representation of special spanner, and wherein a figure is the axial cross-sectional schematic of special spanner; B figure is the plan view of a figure; C figure is the worm's eye view of a figure; The B-B sectional view of (screwing state) when d figure is a figure use.

Among the figure: 1, anti-withdrawing nut; 2, packing ring; 3, bolt; 4, nut; 5, decorating cap; 1a, protruding terminus; 1b, bath mat; 2a, protruding pipe; 2b, convex edge; 2c, inner groovy; 3a, nuts; 3b, bolt shank; 5a, following convex edge; 6, axial bore; 7, roller stand; 8, roller; 9, curved surface groove; 10, block set; 11, overcoat; 12, dop; 13, through hole; 14, nuts.

Embodiment

Below with embodiment license plate for vehicle anti-theft fastening piece of the present utility model is further described, this will help the further understanding to the utility model and effect thereof.

Embodiment 1

As shown in Figure 1 and Figure 2, license plate for vehicle anti-theft fastening piece of the present utility model includes anti-withdrawing nut 1, packing ring 2, bolt 3 and nut 4, and bolt 3 is made up of nuts 3a and bolt shank 3b, and nuts 3a is oblate cylinder and which is provided with straight groove; One side of packing ring 2 has an axial protruding pipe 2a, and the peripheral opposite side of packing ring has two inner groovy 2c at least, and the peripheral opposite side of packing ring 2 has two inner groovy 2c; The bolt shank 3b of bolt 3 has the side of protruding pipe 2a to pass the anti-withdrawing nut 1 of back screw-in from packing ring 2, and the protruding pipe inside of packing ring is provided with convex edge 2b, and nuts 3a is mounted on the convex edge, and the height of convex edge 2b is higher than packing ring 2; One side of anti-withdrawing nut 1 has a protruding terminus 1a, and the inside of protruding terminus 1a is embedded with bath mat 1b, and the internal thread of anti-withdrawing nut 1 matches with the outside thread of bolt shank 3b, and bolt shank 3b holds out against on bath mat 1b after screwing in anti-withdrawing nut 1; Nut 4 is spun on the protruding pipe 2a of packing ring 2; The periphery of protruding pipe is with screw thread and matches with the internal thread of described nut 4, and nut 4 is spun on the protruding pipe 2a of packing ring 2, also is stamped a decorating cap 5 outside the nut 4, and the two is connected together, and the following convex edge 5a of decorating cap 5 covers packing ring 2.

When using the utility model, make up according to shown in Figure 2.As shown in Figure 1, licence plate L is placed between bumper and the packing ring 2, fastening piece must be fixed on the bumper of Motor Vehicle, to guarantee the soundness of fastening piece.Visual concrete condition and bolt shank 3 made the length that needs, in the hole of bolt 3 will be passed successively protruding pipe 2a, packing ring 2, on bumper, accomplishing fluently, bolt 3 is fixing with anti-withdrawing nut 1 at the opposite side of bumper, in the anti-withdrawing nut 1 of turn, to use the straight groove of straight screwdriver fixing bolt cap 3a, with common spanner the anti-withdrawing nut 1 of six prismatics is tightened on the bolt shank 3b, can not will prevents that withdrawing nut 1 screws to prevent bolt 3 from following anti-withdrawing nut 1 rotation.After screwing, block two inner groovy 2c on packing ring 2 peripheries, nut 4 is tightened on the protruding pipe 2a, decorating cap 5 is fastened on the nut gets final product at last with as shown in Figure 3 special tool with clamp.

When loading and unloading nut of the present utility model, need adopt special spanner.Special spanner comprises block set 10, roller 8, roller stand 7 and overcoat 11, and roller stand 7 is positioned at block set 10, and roller 8 places in four axial bores 6 that roller stand 7 is uniformly distributed along the circumference, and overcoat 11 is socketed in outside the block set 10, is that interference fit connects between the two.Block set 10 is a cylindrical shape, and one end sealing has positive four rib dops 12 in the central authorities of this closed end; In its axle center through hole 13 is arranged.Be provided with four curved surface grooves 9 that are uniformly distributed along the circumference in block set 10 inboards; Roller stand 7 is a cylindrical shape, and its external diameter is slightly less than the internal diameter of block set 10.The center of circle of axial bore 6 is positioned at the centre of the wall thickness of roller stand 7, and its slightly larger in diameter is in the thickness of roller stand 7, and its number is identical with the curved surface groove 9 of block set 10 inboards; One end of overcoat 11 has inward flange 15, and its internal diameter is used for roller stand 7 and roller 8 are limited in the block set 10 greater than the internal diameter of described roller stand 7.Interference fit is connected between overcoat 11 and the block set 10; The curved surface groove of axial bore on roller, the roller stand and block set inboard is four.

It is as follows to utilize special spanner to load and unload the working principle of nut of the present utility model:

When nut is installed, special spanner is enclosed within outside the nut 4, according to the direction rotary spanner shown in Fig. 3-d, because the diameter of roller 8 is less than the diameter of the axial bore on the roller stand 76, roller 8 is extruded in the curved surface groove 9 that outwards moves into block set 10 inboards curved surface groove 9 and roller 8 relative deflections when rotating block set 10, deflection angle is big more, the inside pressure of 9 pairs of rollers of curved surface groove 8 is big more, makes roller 8 tightly bite nut 4, and then reaches the purpose of precession;

When the dismounting nut, opposite direction rotary spanner when special spanner is enclosed within that nut 4 is export-oriented installs nuts, roller 8 is extruded the curved surface groove 9 that inwardly shifts out block set 10 inboards, curved surface groove 9 reduces with roller 8 relative deflection angles when the opposite direction to installation the time rotates block set 10,9 pairs of rollers of curved surface groove, 8 inside pressure reduce, make roller 8 loosen nut 4, and then reach the purpose of back-out.

Only needing that when mounted special spanner is enclosed within the nut spanner that turns clockwise outward can't get final product in turn; In when dismounting special spanner is enclosed within and is rotated counterclockwise spanner outside the nut and screws out fully to nut and get final product.

Claims

1, a kind of license plate for vehicle anti-theft fastening piece, comprise anti-withdrawing nut (1), packing ring (2), bolt (3) and nut (4), bolt (3) is made up of nuts (3a) and bolt shank (3b), nuts (3a) is oblate cylinder, it is characterized in that: a side of described packing ring (2) has an axial protruding pipe (2a), the periphery of protruding pipe is with screw thread and matches with the internal thread of described nut (4), and the outer circumferential face of nut is rounded; The bolt shank (3b) of bolt (3) has a side of protruding pipe (2a) to pass the anti-withdrawing nut (1) of back screw-in from packing ring (2), and the protruding pipe inside of packing ring is provided with convex edge (2b), and nuts (3a) is mounted on the convex edge, and nut (4) is spun on the protruding pipe (2a) of packing ring (2).

2, license plate for vehicle anti-theft fastening piece according to claim 1 is characterized in that, described nut (4) is outer also to be stamped a decorating cap (5), and the two is connected together, and the following convex edge (5a) of decorating cap (5) covers packing ring (2).

3, license plate for vehicle anti-theft fastening piece according to claim 1, it is characterized in that, one side of described anti-withdrawing nut (1) has a protruding terminus (1a), the inside of protruding terminus (1a) is embedded with bath mat (1b), the internal thread of anti-withdrawing nut (1) matches with the outside thread of bolt shank (3b), bolt shank (3b) holds out against on bath mat (1b) after screwing in anti-withdrawing nut (1).

4, license plate for vehicle anti-theft fastening piece according to claim 1 is characterized in that, the peripheral opposite side of described packing ring (2) has two inner groovies (2c) at least.

5, license plate for vehicle anti-theft fastening piece according to claim 1 is characterized in that, the height of described convex edge (2b) is higher than packing ring (2).

6, license plate for vehicle anti-theft fastening piece according to claim 1 is characterized in that, described nuts (3a) is provided with straight groove or cross recess.