CN220470439U - Anti-loose anti-theft nut - Google Patents

Abstract

The utility model discloses a locking type anti-theft nut, which comprises a first heavy nut and a second heavy nut, wherein the second heavy nut is arranged on the upper end face of the first heavy nut, the lower end face of the second heavy nut is contacted with the upper end face of the first heavy nut, the first heavy nut is provided with a plurality of through holes and locking pieces, the through holes are uniformly distributed on the upper end face of the first heavy nut by taking screws as the center, the locking pieces are arranged in the through holes and correspond to the through holes one by one, and the locking pieces are in threaded connection with the first heavy nut, so that the locking nut has the beneficial effects that: can be adapted to the existing screw and can achieve the purposes of theft prevention and loose prevention.

Description

Anti-loose anti-theft nut

Technical Field

The utility model relates to the technical field of nuts, in particular to a locking type anti-theft nut.

Background

The anti-loose and anti-theft nuts are widely used in the market and are very important, such as on train rails, glass window frames, installation of site fixing parts and the like, the screw nuts in the places are easy to cause accidents if being loosened, safety is a problem, and although the nuts are also used in the market, the matching performance of the existing screws is not high.

Chinese patent publication No. CN219366554U, an anti-loose and anti-theft nut disclosed in the year 2023, 7 and 18, comprising: the fixing device assembly comprises a first clamping block which is fixedly connected to the surface of the nut body, a limiting ring is movably connected to the surface of the bolt body, a reinforcing rib is fixedly connected to the inner wall of the limiting ring, and a limiting groove is formed in the position where the reinforcing rib is connected with the bolt body. The utility model has the defects that the prior screw cannot be matched, and the practicability is not high.

Disclosure of Invention

The utility model provides a locking type anti-theft nut which can be matched with the existing screw and can prevent looseness and theft in order to overcome the defect that the existing screw cannot be matched with the existing screw in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a locking anti-theft nut, includes first heavy nut and second heavy nut, the second heavy nut is arranged in on the up end of first heavy nut, the lower terminal surface of second heavy nut contacts with the up end of first heavy nut, be equipped with through-hole and retaining member on the first heavy nut, the through-hole has a plurality of and uses the screw as central evenly distributed on the up end of first heavy nut, the retaining member is arranged in the through-hole and with the through-hole one-to-one, retaining member and first heavy nut threaded connection.

When the locking device is used, the first heavy nut is screwed onto the matched screw, then the second heavy nut is screwed onto the screw until the second heavy nut contacts the first heavy nut, then the second heavy nut is screwed continuously, the locking piece is pressed downwards by the lower end face of the second heavy nut, the locking piece can rotate in the through hole, the inner side of the locking piece abuts against the screw, the lower end of the locking piece abuts against the contact face of a substance to be locked, the second heavy nut is screwed to the limit, and finally the second heavy nut is locked, so that the purposes of being capable of adapting to the existing screw and preventing loose and theft are achieved.

Preferably, the locking piece comprises a top shaft and a rotary fixing block, the two opposite side surfaces of the through hole are respectively provided with a first threaded hole, the two opposite threaded holes are corresponding, the rotary fixing block is arranged in the through hole, the top shaft penetrates through the first threaded hole positioned at the outer side and the first threaded hole positioned at the inner side after passing through the rotary fixing block, the top shaft is in threaded connection with the first heavy nut through the first threaded hole, and the top shaft is fixedly connected with the rotary fixing block. After the second heavy nut presses the rotary fixing block to rotate, the top shaft can inwards prop against the screw along with the threaded hole.

Preferably, the rotary fixing block is provided with a pressing block and a supporting block, the pressing block is arranged on the upper end face of the rotary fixing block, the supporting block is arranged on the lower end face of the rotary fixing block, the pressing block and the supporting block are integrally formed with the rotary fixing block, a clamping block is arranged in the through hole and fixedly connected with the first heavy nut, and the rotary fixing block is clamped with the first heavy nut through the cooperation of the pressing block and the clamping block. The pressing block and the abutting block can relatively enable the abutting block to abut against the surface of an object to be fastened when the pressing block is pressed to move downwards.

Preferably, the side of the clamping block is provided with a clamping groove, the pressing block is provided with a protruding block, the protruding block and the pressing block are integrally formed, and the pressing block is clamped with the clamping block through the matching of the protruding block and the clamping groove. The lug and the clamping groove are clamped to fix the fixing piece, so that the second nut cannot be easily taken out after the second nut is taken out, and the anti-theft effect is achieved.

Preferably, the abutting block is provided with a plurality of saw teeth, the saw teeth are uniformly distributed on the lower end face of the abutting block, and the saw teeth and the abutting block are integrally formed. The saw teeth can enable the surface of the abutting block for grabbing an object to be tighter, and the nut can be prevented from loosening.

Preferably, the second heavy nut is provided with a second threaded hole and fixing nails, the second threaded holes are uniformly distributed on the side face of the second heavy nut by taking the screw as a center, the fixing nails are in one-to-one correspondence with the second threaded holes, and the fixing nails are in threaded connection with the second heavy nut through the second threaded holes. The fixing nails can strengthen the second nut and improve the anti-theft and anti-loosening capabilities of the nut by one layer.

The beneficial effects of the utility model are as follows: the screw can be matched with the existing screw and can prevent loosening and theft; after the second heavy nut presses the rotary fixing block to rotate, the top shaft can inwards prop against the screw along with the first threaded hole; the pressing block and the abutting block can relatively enable the abutting block to abut against the surface of an object to be fastened when the pressing block is pressed to move downwards; the convex blocks and the clamping grooves are clamped to fix the fixing piece, so that the second nut cannot be easily taken out after the second nut is taken out, and the anti-theft effect is achieved; the saw teeth can enable the surface of the abutting block for grabbing an object to be tighter, and the nut can be prevented from loosening; the fixing nails can strengthen the second nut and improve the anti-theft and anti-loosening capabilities of the nut by one layer.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a cross-sectional view of a front view of the present utility model;

fig. 3 is an enlarged view of detail a of fig. 2;

FIG. 4 is a top view of the first layer nut;

FIG. 5 is a cross-sectional view of B-B of FIG. 4;

fig. 6 is an enlarged view of detail C of fig. 5;

fig. 7 is an enlarged view of detail D of fig. 6.

In the figure: 1. the nut comprises a first heavy nut, a second heavy nut, a through hole, a locking piece, a top shaft, a rotary fixing block, a first threaded hole, a pressing block, a second threaded hole, a clamping block, a clamping groove, a protruding block, a sawtooth, a second threaded hole and a fixing nail.

Detailed Description

The utility model is further described below with reference to the drawings and detailed description.

As shown in the embodiment of fig. 1 to 3, a locking anti-theft nut comprises a first heavy nut 1 and a second heavy nut 2, wherein the second heavy nut 2 is arranged on the upper end face of the first heavy nut 1, the lower end face of the second heavy nut 2 is contacted with the upper end face of the first heavy nut 1, a plurality of through holes 3 and locking pieces 4 are arranged on the first heavy nut 1, the through holes 3 are uniformly distributed on the upper end face of the first heavy nut 1 by taking a screw as a center, the locking pieces 4 are arranged in the through holes 3 and are in one-to-one correspondence with the through holes 3, and the locking pieces 4 are in threaded connection with the first heavy nut 1.

As shown in fig. 3, 5 and 6, the locking member 4 includes a top shaft 5 and a rotary fixing block 6, two opposite side surfaces of the through hole 3 are respectively provided with a first threaded hole 7, two opposite first threaded holes 7 are corresponding, the rotary fixing block 6 is arranged in the through hole 3, the top shaft 5 passes through the first threaded hole 7 positioned at the outer side and the first threaded hole 7 positioned at the inner side after passing through the rotary fixing block 6, the top shaft 5 is in threaded connection with the first heavy nut 1 through the first threaded hole 7, and the top shaft 5 is fixedly connected with the rotary fixing block 6.

As shown in fig. 6, the rotary fixing block 6 is provided with a pressing block 8 and a supporting block 9, the pressing block 8 is arranged on the upper end face of the rotary fixing block 6, the supporting block 9 is arranged on the lower end face of the rotary fixing block 6, the pressing block 8 and the supporting block 9 are integrally formed with the rotary fixing block 6, a clamping block 10 is arranged in the through hole 3, the clamping block 10 is fixedly connected with the first heavy nut 1, and the rotary fixing block 6 is clamped with the first heavy nut 1 through the cooperation of the pressing block 8 and the clamping block 10.

As shown in fig. 7, a clamping groove 11 is formed in the side surface of the clamping block 10, a protruding block 12 is arranged on the pressing block 8, the protruding block 12 and the pressing block 8 are integrally formed, and the pressing block 8 is clamped with the clamping block 10 through the matching of the protruding block 12 and the clamping groove 11.

As shown in fig. 6, the abutment 9 is provided with saw teeth 13, a plurality of saw teeth 13 are uniformly distributed on the lower end surface of the abutment 9, and the saw teeth 13 and the abutment 9 are integrally formed.

As shown in fig. 1 to 3, the second heavy nut 2 is provided with a second threaded hole 14 and a plurality of fixing nails 15, the second threaded holes 14 are uniformly distributed on the side surface of the second heavy nut 2 by taking the screws as the centers, the fixing nails 15 are in one-to-one correspondence with the second threaded holes 14, and the fixing nails 15 are in threaded connection with the second heavy nut 2 through the second threaded holes 14.

When the anti-theft lock screw is used, the first heavy nut 1 is screwed onto an adaptive screw, then the second heavy nut 2 is screwed onto the screw, the lower end face of the second heavy nut 2 is directly connected to the locking piece 4 on the first heavy nut 1, then the screwing is continued, the pressing block 8 on the rotating fixing block 4 is downwards pressed by the lower end face of the second heavy nut 2, the rotating fixing block 4 is driven to rotate in the through hole 3, the abutting block 9 is downwards pressed, the rotating fixing block 4 and the top shaft 5 are fixedly connected, the top shaft 5 moves inwards in the first threaded hole 7 while the rotating fixing block 4 rotates, the inner end of the top shaft 5 abuts against the outer side face of the screw, the second heavy nut 2 is screwed to the limit, the protruding block 12 on the pressing block 8 can be clamped into the clamping groove 11 on the clamping block 10, the saw tooth 13 on the lower end of the abutting block 9 abuts against the contact face of a required locking article, the rotating fixing block 6 is higher than the through hole 3, and finally the screw 15 in the second threaded hole 14 on the second heavy nut 2 is screwed, so that the anti-theft lock screw can be matched.

Claims (6)

1. The utility model provides a locking type anti-theft nut, its characterized in that, including first heavy nut (1) and second heavy nut (2), on the up end of first heavy nut (1) is arranged in to second heavy nut (2), the lower terminal surface of second heavy nut (2) contacts with the up end of first heavy nut (1), be equipped with through-hole (3) and retaining member (4) on first heavy nut (1), through-hole (3) have a plurality of and use the screw as central evenly distributed on the up end of first heavy nut (1), retaining member (4) are arranged in through-hole (3) and with through-hole (3) one-to-one, retaining member (4) and first heavy nut (1) threaded connection.

2. The anti-loosening antitheft nut according to claim 1, wherein the locking member (4) comprises a top shaft (5) and a rotary fixing block (6), threaded holes I (7) are formed in two opposite side surfaces of the through hole (3), the two opposite threaded holes I (7) are corresponding, the rotary fixing block (6) is arranged in the through hole (3), the top shaft (5) penetrates through the threaded holes I (7) located on the outer side and the rotary fixing block (6) and then is arranged in the threaded holes I (7) located on the inner side, the top shaft (5) is in threaded connection with the first heavy nut (1) through the threaded holes I (7), and the top shaft (5) is fixedly connected with the rotary fixing block (6).

3. The anti-loosening antitheft nut according to claim 2, characterized in that a pressing block (8) and a supporting block (9) are arranged on the rotary fixing block (6), the pressing block (8) is arranged on the upper end face of the rotary fixing block (6), the supporting block (9) is arranged on the lower end face of the rotary fixing block (6), the pressing block (8) and the supporting block (9) are integrally formed with the rotary fixing block (6), a clamping block (10) is arranged in the through hole (3), the clamping block (10) is fixedly connected with the first heavy nut (1), and the rotary fixing block (6) is clamped with the first heavy nut (1) through the matching of the pressing block (8) and the clamping block (10).

4. A locknut according to claim 3, characterized in that the side of the clamping block (10) is provided with a clamping groove (11), the pressing block (8) is provided with a bump (12), the bump (12) and the pressing block (8) are integrally formed, and the pressing block (8) is clamped with the clamping block (10) through the cooperation of the bump (12) and the clamping groove (11).

5. A locknut according to claim 3, wherein the abutting block (9) is provided with saw teeth (13), a plurality of saw teeth (13) are uniformly distributed on the lower end surface of the abutting block (9), and the saw teeth (13) and the abutting block (9) are integrally formed.

6. The anti-loosening antitheft nut according to claim 1, wherein the second nut (2) is provided with a threaded hole II (14) and fixing nails (15), the threaded holes II (14) are uniformly distributed on the side surface of the second nut (2) by taking a screw as a center, the fixing nails (15) are in one-to-one correspondence with the threaded holes II (14), and the fixing nails (15) are in threaded connection with the second nut (2) through the threaded holes II (14).