CN205064505U

CN205064505U - Self tapping swivel nut for through -hole

Info

Publication number: CN205064505U
Application number: CN201520320976.7U
Authority: CN
Inventors: 程志毅; 刘军; 邓士平; 罗明; 蒋大胜; 董浩臻; 李东亚; 陈鑫
Original assignee: Hubei Boshilong Technology Co Ltd
Current assignee: Hubei Boshilong Technology Co ltd
Priority date: 2015-05-19
Filing date: 2015-05-19
Publication date: 2016-03-02
Anticipated expiration: 2025-05-19

Abstract

The utility model discloses a self tapping swivel nut for through -hole, it constitutes by being cylindric main part, has seted up the central through hole along its axis in this main part, is provided with the internal thread in the central through hole of this main part, is provided with the external screw thread outside this main part, the front end that is located the main part is provided with the guide post, has seted up the cutting recess on the guide post of this main part front end and external screw thread, the utility model discloses the advantage is: rationally cutting groove outer row by oneself can be followed to structural design to the metal raw -silk waste that produces during the self tapping in ten minutes, effective cutting area is big, greatly reduced wrong dynamic resistance, the cutting recess is not linked together with the central through hole, does not destroy the structure of central through hole, has effectively guaranteed the screw thread intensity of swivel nut central through hole.

Description

Through hole self tapping swivel nut

Technical field

The utility model relates to the technical field of fastening piece, more particularly relates to the technical field of swivel nut.

Background technique

Swivel nut is mainly used for needing to play certain reinforing function when fixing other component on the parts that material is softer.It is widely used on Aeronautics and Astronautics, automobile and train high speed motor car, at present, particularly use especially extensive on the high speed motor car of automobile and train, due in design in order at utmost alleviate the weight of vehicle body, reach the object of elevator car performance, the housing of locomotive and each parts adopt the softer material of the materials such as aluminium matter to be made usually, but due to the material of aluminum material own partially soft, if desired thereon other component fastening time, its fastening strength will be difficult to ensure.Current solution is first holed on aluminum material, again swivel nut is embedded in by its outside thread in the hole of having bored in advance, then by embedding high strength swivel nut internal thread in it and other component are effectively fastenedly connected, still have the following disadvantages in current using process, one be existing self tapping swivel nut in advances through hole time, guidance quality is bad, and swivel nut easily occurs tilt phenomenon when screwing in; Two is that its cutting edge entirety is rounded, and effective area of cut is limited, and self tapping swivel nut is required when screwing in, and to turn power larger; Three be that cutting place offers with its axis is vertical through hole, and the metal produced during cutting is cut and directly drained from the central hole of swivel nut, but just greatly reduces the screw strength of swivel nut screwed hole of centre like this.

Model utility content

The purpose of this utility model provides a kind of structural design very reasonable to solve above-mentioned deficiency exactly, the metal raw-silk waste produced during self tapping can be arranged outward voluntarily, cutting blade structure design is ingenious, effective area of cut is large, power is turned when greatly reducing self tapping, guidance quality is good, easy to process, also effectively can ensure the through hole self tapping swivel nut of swivel nut screwed hole of centre screw strength.

The technical solution that the utility model adopts to solve the problems of the technologies described above is as follows:

Through hole self tapping swivel nut, it is made up of cylindrical main body, this main body offers central through bore along its axis, internal thread is provided with in the central through bore of this main body, outside thread is had in this main body arranged outside, the front end of this main body is provided with directional post, the directional post and outside thread of this body front end offer cutting flutes.

The cross section of described cutting flutes is by circular and to be squarely put together.

Described cutting flutes forms by 2 to 5, is uniformly distributed the front end be positioned at outside main body.

The beneficial effect that the utility model adopts above-mentioned technical solution to reach is: 1, structural design is very reasonable, and the metal raw-silk waste produced during self tapping can from cutting flutes outer row voluntarily; 2, the cross section of cutting flutes is by circular and to be squarely put together, and cutting blade structure design is ingenious, and effective area of cut is large, greatly reduces and turns resistance; 3, by arranging directional post in body front end, lead when being beneficial to self tapping, the tilt phenomenon occurred when effectively prevent swivel nut main body self tapping; 4, cutting flutes is not connected with central through bore, does not have the structure of destruction center's through hole, effectively ensure that the screw strength of swivel nut central through bore.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model;

Fig. 2 is the complete section structural representation of Fig. 1;

Fig. 3 is A-A sectional structure schematic diagram of Fig. 1.

Embodiment

By Fig. 1, shown in Fig. 2 and Fig. 3, through hole self tapping swivel nut, it is made up of cylindrical main body 1, this main body 1 offers central through bore 2 along its axis, internal thread 3 is provided with in the central through bore 2 of this main body 1, outside thread 4 is had in this main body 1 arranged outside, the front end of this main body 1 is provided with directional post 5, be beneficial to and lead when self tapping, effectively prevent the tilt phenomenon that swivel nut main body 1 occurs when self tapping, facilitate the use of self tapping swivel nut, the directional post 5 and outside thread 4 of this main body 1 front end offer cutting flutes 6, the cross section of this cutting flutes 6 is by circular and to be squarely put together, this kind of structural design, effective area of cut of cutting flutes 6 place cutting edge 7 increases, greatly reduce and turn resistance, the metal raw-silk waste produced during self tapping is from cutting flutes 6 outer row voluntarily, described cutting flutes 6 forms by 2 to 5, be uniformly distributed the front end be positioned at outside main body 1, the cutting flutes 6 of this structure is not connected with central through bore 2, there is no the structure of destruction center's through hole 2, effectively ensure that the screw strength of central through bore 2.

Claims

1. through hole self tapping swivel nut, it is characterized in that: it is made up of cylindrical main body, this main body offers central through bore along its axis, internal thread is provided with in the central through bore of this main body, outside thread is had in this main body arranged outside, the front end of this main body is provided with directional post, the directional post and outside thread of this body front end offer cutting flutes.

2. through hole self tapping swivel nut according to claim 1, is characterized in that: the cross section of described cutting flutes is by circular and to be squarely put together.

3. through hole self tapping swivel nut according to claim 1 and 2, is characterized in that: described cutting flutes forms by 2 to 5, is uniformly distributed the front end be positioned at outside main body.