CN201953786U

CN201953786U - Screw bolt assembly with stop function

Info

Publication number: CN201953786U
Application number: CN2010206834432U
Authority: CN
Inventors: 许勇军
Original assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Current assignee: China Aviation Industry Standard Parts Manufacturing Co Ltd
Priority date: 2010-12-28
Filing date: 2010-12-28
Publication date: 2011-08-31
Anticipated expiration: 2020-12-28

Abstract

The utility model relates to a screw bolt assembly with a stop function, which consists of a stop screw bolt (1), a stop spring (2) and fastening screws (3), wherein a cylinder hole (K1) is formed inside the stop screw bolt, a pair of symmetrical grooves (T) are formed on the end surface of the cylinder hole (K1) and penetrate through the whole cylinder hole (K1), the front section part of the cylinder hole (K1) is provided with a section of screw threads (M), a small through hole (K2) is formed on a screw bolt cylinder body, the small through hole (K2) is communicated with the symmetrical grooves (T) formed inside the cylinder body, the stop spring (2) is in a V-shaped structure, the bottom of the V-shaped structure is in a spiral ring shape, the top of the V shape is provided with two hook feet (L), the stop spring (2) is placed into the symmetrical grooves (T) of the cylinder hole (K1) formed inside the stop screw bolt (1) when the screw bolt assembly is used, and the two hook feet (L) of the stop spring (2) are inserted into the small through hole (K2) formed on the screw bolt cylinder body and are fixed by the fastening screws (3).

Description

A kind of bolt assembly that has locking function

Technical field

The utility model relates to a kind of bolt, particularly relates to a kind of bolt assembly that has locking function.

Technical background

Bolt is a kind of fastening piece of extensive use, but plain bolt in use, carries out the occasion of component-assembled especially for the need nut, and the occasion of oscillation exchange or dither etc. is arranged, and bolt can become flexible because of vibration, and serious meeting comes off automatically.In order to prevent that bolt from getting loose, reduce potential safety hazard, once invented many bolts that insure the hole that have, in the prior art, many application examples are also arranged, and wherein a solution is to get out the insurance hole at bolt head, after with the component assembling, the safety fuse cutout made from steel wire passes the insurance hole of bolt head bolt is tied up on the component of periphery, takes place with the phenomenon that prevents to get loose.But this way is slow, and the installation insurance silk is harder, easily gets loose in order to solve this bolt, with safety fuse cutout the slow practice is installed, and has invented the utility model.

Summary of the invention

The purpose of this utility model provides a kind of bolt assembly that has locking function.

The bolt assembly that has locking function described in the utility model, by dogbolt, stopper spring and Cock screw are formed.

Dogbolt is made up of head and cylinder body, and this head can be a tetragonal body, also can be various ways such as hexahedron, and head and cylinder body can be an integral body, also can connect by modes such as welding to combine; A cylindrical hole is arranged in the inside of dogbolt, and the shape of this cylindrical hole upper end is determined by the nose shape of Cock screw; One symmetrical channels is arranged on the cylindrical hole end face, and this symmetrical channels runs through cylindrical hole, and this symmetrical channels can be semicircle, rectangle, also can be shape such as square; Leading portion at the bolt cylindrical hole partly has one section screw thread; Be provided with a pair of small through hole on the bolt cylinder body, small through hole is connected with the symmetrical channels of cylinder body inside.

Stopper spring is a V font structure, and the bottom of V font is ring-type in the shape of a spiral, and two hook pin are arranged at the top of V font.

A polygonal shrinkage pool is arranged above the head of Cock screw, and this polygonal hole can be the cross flute profile, also can be square, but can also be the shape of multiple twistings such as hexagonal shaped.

During use, after dogbolt described in the utility model is screwed into link inside and tightens, stopper spring is put into the symmetrical channels in dogbolt inner cylinder hole, and move inwards along symmetrical channels, when two hook pin of stopper spring move to the small through hole position, under the effect of distortion elastic force, two hook pin of stopper spring just insert in the small through hole, this moment Cock screw is screwed in the thread section of dogbolt cylindrical hole leading portion part, the push-tight stopper spring, tighten gradually, make stopper spring to withdraw from from the threaded end of dogbolt owing to the screw thread on Cock screw and the dogbolt screws the back certain coupling mechanism force of generation; Because stopper spring and screw thread friction also produce interference, screw pair can't be moved, thereby make the utility model get loose easily from tapped hole, make it reach the effect of stop.

The utility model is by increasing a stopper spring in dogbolt inside, and the screw thread that utilizes two hook pin on the stopper spring to match with dogbolt inner cylinder hole carries out contact friction and produces interference, screw pair can't be moved easily, thereby reach the effect of stop.The utility model is easy for installation, can be widely used in every profession and trade.

Description of drawings

Fig. 1 is the structural representation of the bolt assembly of band locking function described in the utility model;

Fig. 2 is the structural representation of dogbolt in the bolt assembly (1);

Fig. 3 is the sectional view of Fig. 2;

Fig. 4 is dogbolt (a 1) head view;

Fig. 5 is the structural representation of stopper spring in the utility model bolt assembly (2);

Fig. 6 is the plan view of Cock screw in the utility model bolt assembly (3);

Fig. 7 is the right elevation of Fig. 6.

Embodiment

Embodiment 1:

Make the bolt assembly of the band locking function of M10.The as a whole structure of dogbolt in this bolt assembly (1) is done with No. 45 steels, and the head of dogbolt is that a bottom surface length of side is 10mm, and height is the hexahedron of 8mm, the cylindrical hole (K that in the body of bolt inside diameter to be arranged be φ 4 ₁), this cylindrical hole (K ₁) path is arranged is φ 2mm with the head exterior edge face, big footpath be φ 4mm, the round platform hole connection of high 2mm, this cylindrical hole (K ₁) above one section screw thread specification is arranged is M4, longly be the screw thread of 6mm (M), at cylindrical hole (K ₁) on the wide 2mm of a pair of symmetry, the symmetrical channels (T) of dark 1mm are arranged, this symmetrical channels (T) runs through cylindrical hole (K ₁); The cylindrical body of dogbolt is that diameter phi 10 length are the cylindrical body of 50mm, and its cylindrical body outside is the Full Thread FT section, and it is φ 2.5mm that a pair of diameter is arranged on the cylindrical body, apart from the small through hole (K of screw thread leading end 25mm ₂), this small through hole (K ₂) communicate with the symmetrical channels (T) of bolt inside, see shown in Fig. 2,3 and 4.

Stopper spring (2) forms with the steel wire coiling that a trade mark is 70, diameter is φ 2mm, its structure as shown in Figure 5, by axis of great circle is that spiral ring body R, the spring stretched partial-length that two of φ 3.8mm coilings are revolved is 28.2mm, the length of two symmetrical hook pin (L) is 0.6mm, and it is the transition arc of R0.5 that stretched and hook pin section have radius.

Cock screw (3) is that φ 2mm, big footpath are that the Rotary-table of the high 2mm of φ 4mm and cylindrical body that length is 5mm form a whole by path.With the trade mark is that the aluminium of LY-10 is made, and screw head is cross structure, shown in Fig. 6 and 7.

After dogbolt (1) is screwed into the threaded hole of connecting body and tightens, two on the stopper spring (2) symmetrical hook pin (L) are put into the symmetrical channels (T) of dogbolt (1), and along the small through hole (K of symmetrical channels (T) on dogbolt (1) ₂) motion, when moving to small through hole (K ₂) time, because small through hole (K ₂) direction lost resistance, hook pin (L) can be under the distortion elastic force effect of stopper spring (2) itself insertion small through hole (K ₂), and along small through hole (K ₂) move to the outer surface of dogbolt (1), when run into dogbolt (1) on screw thread screw mutually another screw thread the time, just stop motion, screw in the screw thread (M) of Cock screw (3) on dogbolt (1) and push-tight stopper spring (2) this moment, owing to screwing the back certain coupling mechanism force of generation, the screw thread (M) on Cock screw (3) and the dogbolt (1) make stopper spring (2) to withdraw from from screw thread (M) end of dogbolt, because stopper spring (2) is with the screw thread friction and produce interference, make screw pair can't continue motion, after it is subjected to the resistance of stopper spring (2), can't hold from the screw thread (M) of dogbolt easily again simultaneously and withdraw from, thereby make the utility model from tapped hole, get loose easily, make it reach the effect of stop.

Embodiment 2:

Make the bolt assembly of the band locking function of M12.Dogbolt in this bolt assembly is made with 1Cr18Ni9Ti, is welded with the head and the cylindrical body of a tetragonal body.Head is that a bottom surface length of side is 14mm, and height is the tetragonal body of 10mm.Cylindrical hole (the K that it is φ 5 that there is a diameter bolt inside ₁), this cylindrical hole (K ₁) with the exterior edge face of head a diameter to be arranged be that the hole of the high 2mm of φ 6mm is connected this cylindrical hole (K ₁) above one section screw thread specification is arranged is M5, longly be the screw thread of 8mm (M), at cylindrical hole (K ₁) on the radius of a pair of symmetry is arranged is the semicircle symmetrical channels (T) of R1mm, this symmetrical channels (T) runs through cylindrical hole (K ₁); The bolt circle cylinder is the cylindrical body of diameter phi 12 long 60mm, have on it one long for the wide 2.5mm of 3mm, apart from the small through hole (K of screw thread leading end 20mm ₂), this small through hole (K ₂) communicate with the symmetrical channels (T) of bolt inside.

Stopper spring (2) is that 1Cr18Ni9Ti, diameter are that the steel wire coiling of φ 2mm forms with a trade mark, by axis of great circle is that spiral ring body (R), the spring stretched partial-length that two of φ 4.8mm coilings are revolved is 43.2mm, and the length of two symmetrical hook pin (L) is 0.6mm.

Cock screw (3) is that the aluminium of LY-11 is made with the trade mark, and diameter is the high 2mm of φ 5.5mm, and the wide 1mm straight groove of the long 2.5mm of a dark 1mm shape is arranged directly over the head.

The using method of the bolt assembly of the band locking function of this M10 is with embodiment 1.

Claims

1. bolt assembly that has locking function, by dogbolt (1), stopper spring (2) and Cock screw (3) are formed, and it is characterized in that: there is a cylindrical hole (K inside of dogbolt ₁), at cylindrical hole (K ₁) symmetrical channels (T) is arranged, this cylindrical hole (K on the end face ₁) leading portion one section screw thread (M) is partly arranged, on the bolt cylinder body, be provided with a small through hole (K ₂), stopper spring (2) is a V font structure, and the bottom of V font is ring-type in the shape of a spiral, and two hook pin (L) are arranged at the top of V font; During use stopper spring (2) put into dogbolt (1) inner cylinder hole (K ₁) symmetrical channels (T) in, with the small through hole (K on two hook pin (L) inserting bolt cylinder body of stopper spring (2) ₂) in, fixing with Cock screw (3).

2. a kind of bolt assembly that has locking function according to claim 1 is characterized in that: the small through hole (K on the bolt cylinder body ₂) be connected with the symmetrical channels (T) of cylinder body inside.

3. a kind of bolt assembly that has locking function according to claim 1 is characterized in that: dogbolt inner cylinder hole (K ₁) symmetrical channels (T) on the end face runs through whole cylindrical hole (K ₁).

4. according to claim 1 or 3 described a kind of bolt assemblies that have locking function, it is characterized in that: symmetrical channels (T) can be semicircle, rectangle or square.