CN2160790Y

CN2160790Y - Screw thread jointing part with reverse thread double nut locking structure

Info

Publication number: CN2160790Y
Application number: CN 93212219
Authority: CN
Inventors: 林清富
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-12
Filing date: 1993-05-12
Publication date: 1994-04-06
Anticipated expiration: 2003-05-12

Abstract

The utility model discloses a screw thread jointing part with a reverse screw thread double screw nuts anti-loosing structure. In order to provide a screw thread jointing part with a reverse screw thread double screw nuts anti-loosing structure having the advantages of wide application range, good anti-loosing performance and good anti-loosing effect, the screw thread jointing part with a reverse screw thread double screw nuts anti-loosing structure composed of a screw rod forming two reverse screw thread joining pairs and two screw nuts is proposed, meanwhile, the screw rod is provided with a left and a right reverse screw threads and the two screw nuts are respectively provided with a left and a right spiral screw threads.

Description

Screw thread jointing part with reverse thread double nut locking structure

The utility model belongs to the coupling device that fixed component or mechanical parts are used, particularly a kind of thread connector with reverse thread pairs of anti-loose nut structure.

The scyewed joint anti-loose structure of commonly using adopts usually by locking mode of mechanical force or the locking mode of frictionally.The locking mode of mechanical force adopts cotter pin, band wing pad, locked spacer or series connection steel wire more; The locking mode of frictional force adopts spring washer or screw thread double nut in the same way more.The locking mode of machinery requires bolt, nut perforate, fluting, manufacture cost height not only, and Applicable scope is restricted, in the locking mode of frictional force, adopt the not only fragile nut of spring washer, and often make bolt be subjected to the effect of additional bending moment, then anti-loosing effect is not good to adopt in the same way the screw thread double nut, often make loosening, the disengagement of scyewed joint, the safety that jeopardizes the person and facility because of vibration.

The purpose of this utility model provides the thread connector of the good band reverse thread pairs of anti-loose nut structure of a kind of applied widely, anti-loosening property and anti-loosing effect.

The utlity model has screw rod and two nuts of constituting two reverse threads connection pairs, screw rod has the left and right reverse thread that revolves simultaneously, and two nuts have left and right hand thread respectively.

Constitute screw rod and two nuts that two reverse threads connect pair owing to the utlity model has, screw rod has the left and right reverse thread that revolves simultaneously, two nuts have left and right hand thread respectively, nationality helps two nut check direction differences, produce confinement effect mutually, can not get loose, and need not be to bolt, the special processing of nut, can not damage nut again, thereby reach the purpose of this utility model.

Fig. 1 is the utility model embodiment one decomposition texture constructed profile map.

Fig. 2 is the utility model embodiment one overall structure constructed profile map.

Fig. 3 is the utility model embodiment two decomposition texture constructed profile maps.

Fig. 4 is the utility model embodiment two overall structure constructed profile maps.

Fig. 5 is the utility model embodiment three decomposition texture constructed profile maps.

Fig. 6 is the utility model embodiment three overall structure constructed profile maps.

Fig. 7 is the utility model embodiment four decomposition texture constructed profile maps.

Fig. 8 is the utility model embodiment four overall structure constructed profile maps.

Fig. 9 is the utility model embodiment five decomposition texture constructed profile maps.

Figure 10 is the utility model embodiment five overall structure constructed profile maps.

Below in conjunction with accompanying drawing the utility model is further elaborated.

Embodiment one:

The utlity model has screw rod 1 and two

nuts

2,3 of constituting two reverse threads connection pairs, screw rod 1 has overlapping dextrorotation outside thread 11 and sinistral external thread 12 simultaneously; Nut 2 has dextrorotation internal thread 21; Nut 3 has levogyrate inner thread 31.

During use, earlier nut 2 is spun on the screw rod 1, make on it that dextrorotation outside thread 11 coincide on dextrorotation internal thread 21 and the screw rod 1, part A, B are fastenedly connected, again nut 3 is spun on the screw rod 1, make on it that sinistral external thread 12 coincide on levogyrate inner thread 31 and the screw rod 1, and fit, nut 2 is locked on the screw rod 1 with nut 2.

Embodiment two:

The utlity model has the screw rod 4 and the

nuts

2,5 that constitute two reverse threads connection pairs, screw rod 4 has overlapping dextrorotation outside thread 41 and left-handed closely-pitched outside thread 42 simultaneously; Nut 2 has dextrorotation internal thread 21; Nut 5 has left-handed closely-pitched internal thread 51.

During use, earlier nut 2 is spun on the screw rod 4, make on it that dextrorotation outside thread 41 coincide on dextrorotation internal thread 21 and the screw rod 4, part A, B are fastenedly connected, again nut 5 is spun on the screw rod 4, make on it that left-handed closely-pitched outside thread 42 coincide on the left-handed closely-pitched internal thread 51 and screw rod 4, and fit, nut 2 is locked on the screw rod 4 with nut 2.

Embodiment three:

The utlity model has the screw rod 6 and the

nuts

2,7 that constitute two reverse threads connection pairs, screw rod 6 has the dextrorotation outside thread 61 and the sinistral external thread 62 of different-diameter successively; Nut 2 has dextrorotation outside thread 21; Nut 7 has levogyrate inner thread 71.

During use, earlier nut 2 is spun on the screw rod 6, make on it that dextrorotation outside thread 61 coincide on dextrorotation internal thread 21 and the screw rod 6, part A, B are fastenedly connected, again nut 7 is spun on the screw rod 6, levogyrate inner thread on it 71 and sinistral external thread 62 on the screw rod 6 are coincide, and fit, nut 2 is locked on the screw rod 6 with nut 2.

Embodiment four:

The utlity model has the screw rod 6 and the

nuts

2,8 that constitute two reverse threads connection pairs, screw rod 6 has the dextrorotation outside thread 61 and the sinistral external thread 62 of different-diameter successively; Nut 2 has dextrorotation internal thread 21, and nut 8 has the blind screwhole 82 of band reaming 81, has levogyrate inner thread 83 on the blind screwhole 82.

During use, earlier nut 2 is spun on the screw rod 6, make on it that dextrorotation outside thread 61 coincide on dextrorotation internal thread 21 and the screw rod 6, part A, B are fastenedly connected, again nut 8 is spun on the screw rod 6, levogyrate inner thread on it 83 and sinistral external thread 62 on the screw rod 6 are coincide, and fit, nut 2 is locked on the screw rod 6 with nut 2.

Embodiment five:

The utlity model has the screw rod 9 and the

nuts

2,10 that constitute two reverse threads connection pairs, screw rod 9 has dextrorotation outside thread 91 and blind screwhole 92; Has levogyrate inner thread 93 on the blind screwhole 92; Nut 2 has dextrorotation internal thread 21; Nut 10 has blind hole 101, and the center has the double-screw bolt 103 of band sinistral external thread 102 in blind hole 101.

During use, earlier nut 2 is spun on the screw rod 9, make on it that dextrorotation outside thread 91 coincide on dextrorotation internal thread 21 and the screw rod 9, part A, B are fastenedly connected, again the double-screw bolt on the nut 10 103 is spun on the screw rod 9, sinistral external thread on it 102 and levogyrate inner thread 93 on the screw rod 9 are coincide, and fit, nut 2 is locked on the screw rod 9 with nut 2.

Claims

1, a kind of thread connector with reverse thread pairs of anti-loose nut structure, it is characterized in that: it has screw rod and two nuts that constitute two reverse threads connection pairs, screw rod has the left and right reverse thread that revolves simultaneously, and two nuts have left and right hand thread respectively.

2, the thread connector of band reverse thread pairs of anti-loose nut structure according to claim 1 is characterized in that: described screw rod has the overlapping left and right outside thread that revolves simultaneously; Two nuts have left and right medial rotation screw thread.

3, according to the thread connector of claim 1,2 described band reverse thread pairs of anti-loose nut structures, it is characterized in that: described screw rod has overlapping dextrorotation outside thread and left-handed closely-pitched outside thread simultaneously; A nut has the dextrorotation internal thread; Another nut has left-handed closely-pitched internal thread.

4, the thread connector of band reverse thread pairs of anti-loose nut structure according to claim 1, it is characterized in that: described screw rod has the dextrorotation outside thread and the sinistral external thread of different-diameter successively; Nut has the dextrorotation outside thread; Another nut has levogyrate inner thread.

5, according to the thread connector of claim 1,4 described band reverse thread pairs of anti-loose nut structures, it is characterized in that: described little internal diameter nut has the blind screwhole of band reaming, has the dextrorotation internal thread on the blind screwhole.

6, the thread connector of band reverse thread pairs of anti-loose nut structure according to claim 1 is characterized in that: described screw rod has dextrorotation outside thread and blind spiral shell also; Has levogyrate inner thread on the blind screwhole; Nut has the dextrorotation internal thread; Nut has blind hole, and the center has the double-screw bolt of band sinistral external thread in blind hole.