CN217735980U - Anti-loosening reducing bolt and nut fastener - Google Patents

Abstract

The utility model relates to a reducing bolt nut fastener that locking takes off. The utility model discloses a reducing screw thread, process right-handed thread and left-handed thread respectively on the face of cylinder of different diameters, processing technology is the same with ordinary bolt, popularize and apply easily, in addition, the processing design has been carried out to the nut, the connecting hole has been increased, form the flange nut similar to the flange, can utilize the iron wire to connect two nuts through the connecting hole fixedly, just so form that lower nut can receive the restriction of last nut when receiving the vibration and becoming flexible, the restriction of lower nut is accepted to the iron wire fixed even that passes through when the upper nut is not flexible, thereby realize the effect that the nut is not flexible, and whole nut, the processing of bolt all adopts conventional technology, easy processing, the cost is lower.

Description

Anti-loosening reducing bolt and nut fastener

Technical Field

The utility model relates to a bolt fastener technical field specifically is a reducing bolt and nut fastener of locking pine.

Background

The nut is as most commonly used and most leading fastener in machinery, occupy fairly big position, the nut on the present market is mostly the hexagon structure, the centre is equipped with the screw hole, realize the fastening on being connected to the bolt through screw fit, but when using in the machinery that has vibrations, impact or heavy load, the nut is very easy the pine and takes off, present some locking bolt and nut that takes off is with right-handed screw and left-handed screw processing on same face of cylinder, can screw on the right-handed nut, also can screw on left-handed nut, utilize two nuts to restrict each other and reach locking effect. The defects of the method are mainly high processing difficulty and high cost. From the viewpoint of simplifying the processing technique and reducing the processing cost, a new bolt fastener of the anti-loosening structure is required.

SUMMERY OF THE UTILITY MODEL

In view of the problem that exists among the prior art, the utility model discloses a reducing bolt nut fastener that locking takes off, the technical scheme of adoption is, has seted up the derotation screw thread on the bolt front end circumference wall, has seted up the corotation screw thread on the circumference wall of middle part, and the bolt adopts reducing step shaft structure, the screw diameter of corotation screw thread department is greater than the screw diameter of derotation screw thread department, the corotation nut is installed to the screw-thread fit on the corotation screw thread, the derotation nut is installed to the screw-thread fit on the derotation screw thread, first connecting hole has evenly been seted up to the edge equidistance of corotation nut, the second connecting hole has evenly been seted up to the edge equidistance of derotation nut, and upper and lower adjacent is close first connecting hole with cross-under ties up the iron wire in the second connecting hole, through the iron wire with corotation nut and derotation nut fixed connection together, form mutual restriction.

The utility model has the advantages that: the utility model discloses a reducing screw thread, process right-handed thread and left-handed thread respectively on the face of cylinder of different diameters, processing technology is the same with ordinary bolt, popularize and apply easily, in addition, the processing design has been carried out to the nut, the connecting hole has been increased, form the flange nut similar to the flange, can utilize the iron wire to connect two nuts through the connecting hole fixedly, just so form that lower nut can receive the restriction of last nut when receiving the vibration and becoming flexible, the restriction of lower nut is accepted to the iron wire fixed even that passes through when the upper nut is not flexible, thereby realize the effect that the nut is not flexible, and whole nut, the processing of bolt all adopts conventional technology, easy processing, the cost is lower.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a view of the bolt structure of the present invention.

In the figure: 1 bolt, 101 forward threads, 102 reverse threads, 2 forward nuts, 201 first connecting hole, 3 reverse nuts, 301 second connecting hole and 4 iron wires.

Detailed Description

Example 1

As shown in fig. 1-2, the utility model discloses a reducing bolt-nut fastener that locking is taken off, the technical scheme of adoption is, bolt 1 adopts reducing step shaft structure, has seted up derotation screw thread 102 on the path axle circumference wall of front end, has seted up on the big diameter axle circumference wall at middle part and has just revolved screw thread 101, screw-thread fit installs positive nut 2 on the positive screw thread 101, back-spin nut 3 is installed to screw-thread fit on the back-spin screw thread 102, first connecting hole 201 has evenly been seted up to the equidistant first connecting hole 201 in edge of positive nut 2, second connecting hole 301 has evenly been seted up to the equidistant in edge of back-spin nut 3, under positive nut 2 and the back-spin nut 3 state of screwing, adjacent upper and lower first connecting hole 201 with cross-under the second connecting hole 301 tie up there is iron wire 4, through iron wire 4 with positive nut 2 and back-spin nut 3 fixed connection together, form mutual restriction, cause positive nut 2 or back-spin nut 3 have the pine to take off the condition because the pine direction of two nuts is different to carry out the tractive through two iron wire 4 between the mutual restrictions.

The utility model discloses a theory of operation: during the use, install the position that needs the fastening with bolt 1, then screw up 2 completions of pronation nut earlier and fasten, back-spin nut 3 is screwed up again, two nuts are all screwed up the back, cross in first connecting hole 201 and the second connecting hole 301 and tie up through iron wire 4 and tie up, thereby tie up two nuts and fix, when vibration causes pronation nut 2 or back-spin nut 3 to have the pine to take off the condition, because the pine of two nuts takes off the direction different, thereby carry out the tractive through iron wire 4 and make restriction each other between two nuts, play the effect of anti-loosening.

In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore are not to be construed as limiting the present invention, and further, the terms "first", "second", and the like are used only for descriptive purposes and are not intended to indicate or imply relative importance or to implicitly indicate the number of technical features being referred to, whereby the features defined as "first", "second", and the like may explicitly or implicitly include one or more such features, and in the description of the present invention, unless otherwise indicated, the terms "plurality" means two or more than two.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or the two elements may be connected through an intermediate medium, and the specific meaning of the above terms in the present invention can be understood by those skilled in the art through specific situations.

Components not described in detail herein are prior art.

Although the specific embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge range of those skilled in the art, and modifications or variations that do not have creative work are still within the scope of the present invention.

Claims (2)

1. The utility model provides a reducing bolt-nut fastener that locking was taken off, a serial communication port, includes bolt (1), back-spin screw thread (102) have been seted up on bolt (1) front end circumference wall, and forward-spin screw thread (101) have been seted up on the circumference wall of middle part, forward-spin nut (2) are installed to screw-thread fit on forward-spin screw thread (101), back-spin nut (3) are installed to screw-thread fit on back-spin screw thread (102), first connecting hole (201) have evenly been seted up to the edge equidistant of forward-spin nut (2), second connecting hole (301) have evenly been seted up to the edge equidistant of back-spin nut (3), and upper and lower adjacent first connecting hole (201) with cross-under ties up in second connecting hole (301) and ties up iron wire (4).

2. The anti-loosening variable diameter bolt and nut fastener according to claim 1, wherein: the screw diameter at the positive rotation thread (101) is larger than that at the negative rotation thread (102).

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