CN205036707U

CN205036707U - Prevent tearing open bolt and nut integrated configuration

Info

Publication number: CN205036707U
Application number: CN201520769163.6U
Authority: CN
Inventors: 吕志星; 张新忠; 刘继彦; 张丽华; 宋卫平; 刘红梅; 王燕; 翟娜娜; 焦菲
Original assignee: State Grid Corp of China SGCC; TaiAn Power Supply Co of State Grid Shandong Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; TaiAn Power Supply Co of State Grid Shandong Electric Power Co Ltd
Priority date: 2015-10-08
Filing date: 2015-10-08
Publication date: 2016-02-17
Anticipated expiration: 2025-10-08

Abstract

The utility model discloses a prevent tearing open bolt and nut integrated configuration, this structure is by the nut, it constitutes to prevent tearing open card and bolt, the inner wall of nut is opened to the outside has the crossing just cross section of four and nut internal thread to be the contrary draw -in groove of ending of " V " shape, bolt external screw thread department is equipped with bottom surface and the crossing flat groove of bolt external screw thread, open downwards flat groove's bottom surface has the cross -section to be the card groove of rectangle, prevent that the face of erectting of tearing the card open inserts in the card groove, prevent that the top surface of tearing the card open exceeds flat groove, and its edge that exposes the end surpasss the flat groove edge, prevent tearing open exposing the end and can being impressed in the flat groove by the nut of card, pop out in the arbitrary only contrary draw -in groove of card income in also can following flat groove. The utility model discloses during the use, the nut can use common tool fastening, nevertheless prevents tearing open exposing the terminal surface and can pushing up in the nut ends contrary draw -in groove of card when demolising the nut, and the nut can not retrograde rotation, can't demolish.

Description

A kind of dismounting-proof bolt nut combinations structure

Technical field

The utility model relates to a kind of dismounting-proof bolt nut combinations, belongs to a kind of fastening piece.

Background technique

In fields such as communication, electric power, railways, there is a large amount of facility to need to be arranged on outdoor, when adopting traditional plain bolt nut as fastening piece, remove easily via general tool, therefore must use tamper nut.The irregular profile of employing that existing tamper nut has, by the instrument installation and removal of custom-made, but this type of instrument is easy to copy, and tamper effect is undesirable.

Summary of the invention

For current tamper nut Problems existing, the utility model devises a kind of dismounting-proof bolt nut combinations structure, its scheme taked is: this structure is by nut, tamper card and bolt composition, the inwall of nut has the non-return draw-in groove that four and cross sections crossing with nut inner thread are " V " shape laterally, four non-return draw-in grooves are uniformly distributed on the large footpath of nut inner thread, the degree of depth of non-return draw-in groove exceedes the large footpath of nut inner thread and axially runs through whole nut, bolt outside thread place is provided with rise as high as the banks crossing with bolt outside thread of bottom surface, the bottom surface of rising as high as the banks has the card slot that cross section is rectangle downwards, tamper card has elasticity and cross section is inverted "L" shaped, the risers of tamper card is inserted in card slot, the end face of tamper card exceeds rises as high as the banks, and the edge of its exposed junction exceeds edge of rising as high as the banks, when nut precession bolt, in the exposed junction of tamper card can be risen as high as the banks by nut press-in, when nut screws out bolt, tamper card can snap in arbitrary non-return draw-in groove from interior ejection of rising as high as the banks.

When the utility model uses, nut can use general tool fastening, but when removing nut the exposing end face and can withstand in the non-return draw-in groove of nut of tamper card, nut can not counter-rotating, cannot remove.Therefore, after the utility model uses, tamper object can be realized.

Accompanying drawing explanation

Fig. 1 is STRUCTURE DECOMPOSITION schematic diagram of the present utility model;

Fig. 2 is the utility model generalized section.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described further:

As depicted in figs. 1 and 2, should by nut 1, tamper card 2 and bolt 3 form, the inwall of nut 1 has the non-return draw-in groove 11 that four and cross sections crossing with nut 1 internal thread are " V " shape laterally, four non-return draw-in grooves 11 are uniformly distributed on the large footpath of nut 1 internal thread, the degree of depth of non-return draw-in groove 11 exceedes the large footpath of nut 1 internal thread and axially runs through whole nut, bolt 3 outside thread place be provided with bottom surface crossing with bolt 3 outside thread rise as high as the banks 32, rise as high as the banks 32 bottom surface have the card slot 31 that cross section is rectangle downwards, tamper card 2 has elasticity and cross section is inverted "L" shaped, the risers of tamper card 2 is inserted in card slot 31, the end face of tamper card 2 exceeds rises as high as the banks 32, and the edge of its exposed junction exceeds 32 edges of rising as high as the banks.

When the utility model uses, be enclosed within by nut 1 on bolt 3, along with the rotation of nut 1, nut 1 internal thread can push down tamper card 2 gradually, make tamper card 2 rise as high as the banks to the 32 bottom surface Direction distortions being placed in completely of rising as high as the banks 32 scope, nut 1 continues to rotate until complete fastening.When removing nut 1, when nut 1 counter-rotating to non-return draw-in groove 11 aligns tamper card 2, tamper card 2 can be upspring, and its end face can withstand in the non-return draw-in groove 11 of nut 1, stops that nut can not continue counter-rotating, and then cannot remove.

Claims

1. a dismounting-proof bolt nut combinations structure, by nut (1), tamper card (2) and bolt (3) composition, it is characterized in that, the inwall of nut (1) has the non-return draw-in groove (11) that four and cross sections crossing with nut (1) internal thread are " V " shape laterally, four non-return draw-in grooves (11) are uniformly distributed on the large footpath of nut (1) internal thread, the degree of depth of non-return draw-in groove (11) exceedes the large footpath of nut (1) internal thread and axially runs through whole nut, bolt (3) outside thread place is provided with bottom surface rise as high as the banks (32) crossing with bolt (3) outside thread, the rise as high as the banks bottom surface of (32) has the card slot (31) that cross section is rectangle downwards, tamper card (2) has elasticity and cross section is inverted "L" shaped, the risers of tamper card (2) is inserted in card slot (31), the end face of tamper card (2) exceeds rise as high as the banks (32), and the edge of its exposed junction exceeds (32) edge of rising as high as the banks, when nut (1) precession bolt (3), the exposed junction of tamper card (2) can be risen as high as the banks in (32) by nut (1) press-in, when nut (1) screws out bolt (3), tamper card (2) can eject and snap in arbitrary non-return draw-in groove (11) in rise as high as the banks (32).