CN206972732U - A kind of nut anti-looseness external member - Google Patents

Abstract

A kind of nut anti-looseness external member is the utility model is related to, is integrally formed and formed by the flange of rectangle bottom plate and two half U types, two flange are vertically set in the both sides long side of rectangle bottom plate, and flanging length is less than the long edge lengths of rectangle bottom plate；At least two special-shaped hexagonal holes are provided with the rectangle bottom plate, the inscribed circle radius r of the special-shaped one of short side of hexagonal hole is less than the inscribed circle radius R on other five sides, and the both sides of short side are respectively provided with a Long Circle gap.The utility model nut anti-looseness external member is simple to manufacture, and after two or more nuts and the utility model assembling, can thoroughly prevent nut from rotating loosening by metal plate punching shaping or injection molding；Meanwhile the utility model do not change nut structure, do not destroy screw thread, be easy to dismounting and it is reusable；Its structural manufacturing process is simple, be easily achieved and cost is cheap.

Description

A kind of nut anti-looseness external member

Technical field

The utility model belongs to the technical field of threaded fastener, and in particular to a kind of nut anti-looseness external member.

Background technology

Threaded fastener is to clamp connected compcnent by keeping certain axle power, and threaded fastener passes through under the conditions of static load Frictional force between internal and external threads and between seating surface keeps not loosening.But because vibration, shock loading can cause threaded fastener Loosening is rotated, so as to cause thread connection to fail.At present, the problem of being loosened for screw thread rotation, mainly by increasing spiral shell Frictional force between line extends the time of thread looseness, such as nylon nut, flow of metal nut, but its effect and unobvious, Still there is nut loosening problem under stronger vibration operating mode.The anti-of nut can also be improved by changing helicitic texture Loose performance, such as U.S. SPL (30 ° of screw threads) nut, but its special structure, easily cause bolt external screw thread slide fastener.It is existing compared with can The locking mode leaned on is welded nut, rushes the modes such as point deformation, but it exists to operate laborious, not reproducible dismounting and use etc. and lacked Point.

The content of the invention

The utility model provides a kind of nut anti-looseness external member, can effectively prevent threaded fastener from rotating loosening, its Nut structure need not be changed, do not destroy screw thread, be readily disassembled simultaneously, it is reusable.

The purpose of this utility model is achieved through the following technical solutions：

A kind of nut anti-looseness external member, it is integrally formed and is formed by the flange 1 of rectangle bottom plate 2 and two half U types, two flange 1 is vertically set in the both sides long side of rectangle bottom plate 2, and the length of flange 1 is less than the long edge lengths of rectangle bottom plate 2；

At least two special-shaped hexagonal holes 3, the special-shaped one of short side 4 of hexagonal hole 3 are provided with the rectangle bottom plate 2 Inscribed circle radius r be less than the inscribed circle radius R on other five sides, and the both sides of short side 4 are respectively provided with a Long Circle gap 5。

The rectangle bottom plate 2 and two flange 1 are using metal plate punching shaping or injection molding.

Compared with prior art, the beneficial effects of the utility model are：

The utility model nut anti-looseness external member is simple to manufacture, can be by metal plate punching shaping or injection molding, by two Individual or multiple nuts are with after the utility model assembling, can thoroughly prevent nut from rotating loosening；Meanwhile the utility model is not Change nut structure, do not destroy screw thread, be easy to dismounting and it is reusable；Its structural manufacturing process is simple, be easily achieved and cost is low It is honest and clean.

Brief description of the drawings

Fig. 1 show axonmetric chart of the present utility model；

Fig. 2 show front view of the present utility model；

Fig. 3 show A-A sectional views of the present utility model；

Fig. 4 show the utility model and the front view of turret head flange nut assembling；

Fig. 5 show the utility model and the B-B sectional views of turret head flange nut assembling；

Fig. 6 show the utility model and the top view of turret head flange nut assembling.

In figure, the hexagonal head flange spiral shell of 1. flange, 2. bottom, 3. 5. Long Circle gap of special-shaped 4. short side of hexagonal hole 6. It is female.

Embodiment

Describe specific embodiment of the present utility model in detail below in conjunction with the accompanying drawings.

As depicted in figs. 1 and 2, a kind of nut anti-looseness external member, generally rectangle thin plate, two long side have flange 1, So as to form U-shaped structure (as shown in Figure 3), increase integral rigidity；Two or more special-shaped hexagonal holes 3 are arranged in U-shaped bottom 2, The inscribed circle radius r of one of short side 4 of the special-shaped hexagonal hole 3 is less than the inscribed circle radius R on other 5 sides, and short The both sides on side 4 carry two director's circle gap 5.The utility model nut anti-looseness external member can metal plate punching shaping or plastic injection into Type, its simple in construction, easy to manufacture and cost is low.

As shown in Figure 4, Figure 5 and Figure 6, illustrate for the utility model nut anti-looseness external member and the assembling of turret head flange nut Figure.It is partially pressed into when by the hexagon-head of two or more turret head flange nuts 6 in special-shaped hexagonal hole 3 of the present utility model When, because the turret head inscribed circle radius R0 of turret head flange nut 6 is more than the inscribed circle radius of one short side 4 of the utility model R and the inscribed circle radius R for being less than other 5 sides.Therefore, deformed (such as by the elasticity of flexure of one short side 4 of the utility model Shown in Fig. 5) turret head flange nut 6 is firmly stuck in special-shaped hexagonal hole 3 of the present utility model, so as to by multiple nuts It is together in series and plays anti-loose effect without losing.In use, the turret head part of advance two or more turret head flange nuts 6 It is pressed into special-shaped hexagonal hole 3 of the present utility model, forms multiple nuts and combine locking external member, then by matching used bolt Tighten.

Claims (2)

1. A kind of 1. nut anti-looseness external member, it is characterised in that：It is integrally formed by the flange (1) of rectangle bottom plate (2) and two half U types Form, two flange (1) are vertically set in the both sides long side of rectangle bottom plate (2), and flange (1) length is less than rectangle bottom plate (2) long edge lengths；At least two special-shaped hexagonal holes (3), special-shaped hexagonal hole (3) are provided with the rectangle bottom plate (2) The inscribed circle radius r of middle short side (4) is less than the inscribed circle radius R on other five sides, and the both sides of short side (4) are respectively provided with one Long Circle gap (5).
2. A kind of 2. nut anti-looseness external member according to claim 1, it is characterised in that：The rectangle bottom plate (2) and two Flange (1) uses metal plate punching or injection molding.