CN2064836U

CN2064836U - Blocking double nut

Info

Publication number: CN2064836U
Application number: CN 90206495
Authority: CN
Inventors: 陆正家
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-05-18
Filing date: 1990-05-18
Publication date: 1990-10-31

Abstract

The utility model relates to a fastener, particularly a blocking double nut which is composed of an upper nut and a lower nut, wherein, the lower nut 2 is provided with a tenon 3 which is screwed in a threaded hole 4 of upper nut by external threads; the upper nut and the lower nut are mutually screwed and combined into integration by connecting screw threads, A connecting screw thread 7 and the inner screw thread in a common fixing member 8 inside screw threads in the inner edges of two nuts. After being installed, the lower nut is fixed and the upper nut is tightly screwed. Thus the screw bolt is tightly pressed automatically and the loosen-proof effect is achieved. In addition, as long as the utility model is matched, the utility model can be free from the limitation of the upper and lower directions can achieve the locking purpose at the time of installation.

Description

Blocking double nut

The utility model relates to a kind of fastening piece, particularly locking double nut.

For preventing bolt looseness, the various loosening measures that prevent are arranged, and the simplest a kind of way commonly used, adopt double nut exactly, though but this method increased the axial tensile strength of bolt and the effect of becoming flexible of preventing arranged, still for want of more effective anti-loose structure, the time is long slightly, stand vibration, still difficulty avoids producing loosening phenomenon.

The purpose of this utility model is that a kind of improved double nut will be provided, in a single day it is tightened on bolt, though stand vibration, also can not become flexible.

The purpose of this utility model is to realize like this, this locking double nut is made of a pair of nut up and down, lower nut wherein is provided with tenon, this tenon is to screw in the set tapped hole of upper cap nut, two nuts screw mutually with connecting thread and fuse, this connecting thread be located at the internal thread decentraction that two common fixed components of nut inner edge are used.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1: locking double nut assembling back schematic representation.

Fig. 2: upper cap nut structural representation.

Fig. 3: lower nut structural representation.

Fig. 4: upper cap nut schematic top plan view.

Fig. 5: lower nut schematic top plan view.

Below in conjunction with accompanying drawing, describe concrete structure of the present utility model and working condition thereof in detail.

Referring to accompanying drawing 1-5, locking double nut is made of upper cap nut 1, lower nut 2 a pair of nuts, wherein lower nut 2 is provided with tenon 3, this tenon 3 is to screw in the set tapped hole 4 of upper cap nut 1, and all screw respectively this location end face 5 and 6 places of lower nut, two nuts screw mutually with connecting thread 7, fuse this connecting thread 7 and internal thread 9 decentraction of being located at two common fixed component 8 usefulness of nut inner edge.10 is the center line of connecting thread 7 among the figure, and 11 is the center line of screw thread 9.

During use, two nuts tighten to together with screw thread 7 up and down earlier, reach its location end face respectively, two nut screwing clampings that will make up then to member 8, at this moment, fixing lower nut, upper cap nut rotated backward tighten, when vibration takes place, then because of screw thread 7 and screw thread 9 decentraction, with the bolt jam-packed, thereby reach locking purpose, in addition, last lower nut, as long as supporting, also can put upside down use.

With the M24 nut is example, and the connecting thread 7 of two nuts can be used M28, off-centre 2mm.

The utility model is applicable to various with bolted member, and anti-loosing effect is good, and is convenient and practical.

Claims

1, a kind of fastening piece, particularly locking double nut, constituted by a pair of nut up and down, it is characterized in that lower nut 2 wherein is provided with tenon 3, this tenon is to screw in the set tapped hole of upper cap nut 4, two nuts screw mutually with connecting thread 7 and fuse, this connecting thread 7 and internal thread 9 decentraction of being located at two common fixed component 8 usefulness of nut inner edge.