CN202203255U

CN202203255U - Self-locking nut with groove and double screws

Info

Publication number: CN202203255U
Application number: CN2011202827612U
Authority: CN
Inventors: 张意立
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-07-28
Filing date: 2011-07-28
Publication date: 2012-04-25
Anticipated expiration: 2021-07-28

Abstract

Provided is a self-locking nut with a groove and double screws. The self-locking nut comprises a hexagonal prism-shaped nut and two locking screws. A groove is provided in the hexagonal prism-shaped nut at a position between two adjacent outer edge sides. Through holes are provided at the non-working contact end face side and between large threads and two adjacent outer edges, respectively. Two screw holes are provided at the working contact end face side and are respectively corresponding to the through holes. Threaded sections of the locking screws penetrate through the through holes and are matched with the screw holes, so as to force the elastic deformation of the thin side of a non-working contact surface at the groove root portion, thereby guaranteeing that the large threads and outer threads of a working shaft cannot be screwed and achieving the self-locking effect. The utility model has the beneficial effects that the adoption of the ingenious structure of the groove and the double screws solves the problem in terms of accurate self-locking of the nut at any position after the nut is already screwed up; in addition, the self-locking nut of the utility model is simple in structure and novel in concept and is convenient to carry and use.

Description

A kind of fluting is joined two screw self-locking nuts

Technical field

The present invention relates to a kind of mechanical locking device, particularly relate to a kind of fluting and join two screw self-locking nuts.

Background technique

Nut check is mechanical connection manner common in the existing technology, at some the special dimension of vibrations is arranged, and also requires nut to possess self-lock ability.For preventing that in mechanical field because of nut loosening causes inefficacy, generally employing method has: add locking bullet pad, then poor reliability; Pairs of anti-loose nut, it is loosening together then to occur double nut easily; Add cotter pin with the GB/T6180-1986 hexagon slotted nut, then can't tighten and put accurately self-locking, and self degree of tightness is inconsistent, and also there is certain requirement the operating space in any position; Also can guarantee self-locking though GB/T812-1988 round nut and GB/T812-1988 round nut use with the lock washer pairing, also can't tighten and put accurately self-locking, and must the thread section of working shaft be left a keyway, process loaded down with trivial details in any position; Also having a kind of is vertical tapping screw on the outer-hexagonal plane of nut, and then Screw self does not have locking and stressed screw thread to be damaged.Chinese patent number is 97112246.6 to disclose a kind of radially necking deformation to reach the locking purpose, and then manufacturing process is complicated, and effect is with to add locking bullet pad similar; Chinese patent number is 200410097308.9 to disclose a kind of nut and add cover and Cock screw is set to reach the locking purpose, and then structure is burdensome, and effect is similar with vertical tapping screw on the outer-hexagonal plane of nut, can not be adapted to little space.

Summary of the invention

The objective of the invention is to provide a kind of spatial limitation that do not receive, lock reliable more a kind of fluting and join two screw self-locking nuts.In order to realize above purpose, adopt following technological scheme:

A kind of fluting is joined two screw self-locking nuts; Comprise 2 two of hexagon nut 1, lock screws; Described hexagon nut 1 two adjacent outside corner angle limit place a fluting 11 is arranged, fluting 11 is 1/10th to 1/5th of major thread 16 diameters apart from the distances of inoperative contact end face side 13, is preferably 1/7th; The degree of depth of fluting 11 is for surpassing between medial axis 8 and the major thread 16; Inoperative contact end face side 13 has a through hole 14 respectively between major thread 16 and two adjacent outer corner angle, work to contact end face side 12 and have two screws 15 to correspond respectively to through hole 14, and the thread section 22 of lock screw 2 passes through hole 14 and matches with screw 15.

During use; The Transverse plane of the thick side 12 of work surface of contact is affixed to the work surface of contact; Hexagon nut 1 cooperates and tightens along the outside thread rotation of major thread 16 and working shaft 3, unclamps because of vibrations for preventing hexagon nut 1 and working shaft outside thread, again lock screw 2 is passed through hole 14; Make thread section 22 and screw 15 match to merge and tighten; Force the thin side 13 of inoperative surface of contact in fluting 11 root generation resiliently deformables, guarantee that the major thread 16 and the outside thread of working shaft 3 can't rotate, have played the self-locking effect again.

The beneficial effect of the utility model is: adopts fluting to add two these ingenious structures of screw, goes up accurate self-locking problem at an arbitrary position after having solved nut screwing clamping, and manufacturing easily, be easy to carry, easy to use, possess simple in structure, novel.

Description of drawings

Fig. 1 is the A-A sectional drawing of the utility model in Fig. 2;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the sectional drawing of the utility model application implementation example in small space.

Embodiment

Below in conjunction with accompanying drawing and embodiment the further explain of doing to the utility model:

A kind of fluting is joined two screw self-locking nuts; Comprise 2 two of hexagon nut 1, lock screws; Described M30 hexagon nut 1 has the fluting 11 of one 3 mm wide at a knuckle line place; Fluting 11 is 5 millimeters apart from the distances of the thin side 13 of inoperative surface of contact, and the degree of depth of fluting 11 is 30 millimeters, and the thin side 13 of inoperative surface of contact has the through hole 14 of 7 millimeters of diameters outside adjacent between the corner angle on apart from the circumference at 20 millimeters places of medial axis radius respectively at major thread 16 and two; The thick side 12 of work surface of contact has two M6 screws 15 corresponding to through hole 14, and the thread section 22 of M6 lock screw 2 passes through hole 14 and matches with screw 15.

When small space was used, working shaft 3 was equipped with flat key 5 in conical section, and flat key 5 is used for transmitting torque.Belt pulley 6 and transmission shaft 3 cooperate in conical section; After placing plain washer 4; The thick side of work surface of contact 12 the Transverse plane here is affixed to plain washer 4, with socket wrench hexagon nut 1 is cooperated with the M30 outside thread rotation of working shaft 3 and tightens along major thread 16, for the outside thread that prevents hexagon nut 1 and working shaft 3 unclamps because of vibrations; Again two M6 lock screws 2 are passed through hole 14 successively; Make M6 match with M6 screw 15, and tighten, force the thin side 13 of inoperative surface of contact in fluting 11 root generation resiliently deformables through interior hexagonal spiral shell brain 21 at the thread section 22 of lock screw 2; Guarantee that the M30 major thread 16 and the M30 outside thread of working shaft can't rotate again, have played the effect that goes up accurate self-locking after tightening at an arbitrary position.

Claims

1. a fluting is joined two screw self-locking nuts; Comprise (2) two of hexagon nut (1), lock screws; It is characterized in that: described hexagon nut (1) two adjacent outside corner angle limit place a fluting (11) is arranged; Fluting (11) is 1/10th to 1/5th of major thread (a 16) diameter apart from the distance of inoperative contact end face side (13); The degree of depth of fluting (11) is for surpassing between medial axis (8) and the major thread (16); Inoperative contact end face side (13) has a through hole (14) respectively between major thread (16) and two adjacent outer corner angle, work to contact end face side (12) and have two screws (15) to correspond respectively to through hole (14), and the thread section (22) of lock screw (2) passes through hole (14) and matches with screw (15).