TWM594651U - Anti-loose nut set - Google Patents

Abstract

An anti-loosening nut includes: a first nut having a nut base and a screwing portion protruding outward from a surface of the nut base, the screwing portion is provided with a plurality of longitudinal grooves at intervals, so that The screwing portion is formed with a plurality of screwing claw bodies, and the inner wall of each screwing claw body is provided with a first internally threaded wall for screwing with the bolt; and a pressing ring is arranged to set the screw located on the first screw cap Outside the coupling part, the inner wall of the pressing ring has an outer wall for pressing the inner wall for pressing the screw claw bodies of the screwing part.

Description

Locknut set

The present invention relates to a nut, especially to an anti-loosening nut group.

The screw connection between the nut and the bolt is used to lock an object. That is, after passing the bolt through an object or more than one object, the nut is screwed to the end of the bolt to lock the objects.

However, due to vibration and other factors, sometimes the looseness between the nut and the bolt may cause loosening or loosening of the locked object.

In view of this, there are anti-loosening nuts designed to prevent loosening between the nuts and bolts.

Please refer to FIG. 1 and FIG. 2, which shows an exploded view and a combined cross-sectional view of a conventional locknut assembly. As shown in these drawings, the conventional locknut assembly includes an eccentric nut 400 and a locking nut 500. The eccentric screw cap 400 has an eccentric screw hole 410, that is, the outer wall of the eccentric screw hole 410 has a thin wall 411 and a thick wall 412 opposite to each other; the eccentric screw hole 410 is for screwing with a bolt 300. The locking nut 500 is disposed outside the wall of the eccentric screw hole 410 of the eccentric nut 400, and is locked with the locking screw hole 510 and the bolt 300, and at the same time, the inner wall 520 of the locking nut 500 is forced to The thick wall 412 of the eccentric nut 400 prevents the eccentric nut 400 from loosening.

However, this conventional eccentrically designed anti-loosening nut group has the following shortcomings in use: (1), its pressing point is on one side, there is the risk of tooth collapse, and the seismic resistance is not good; (2), its pressing The tightening point occurs between the locking nut 500 and the eccentric nut 400, and its pressing force cannot be transmitted between the eccentric nut 400 and the bolt 300, so the locking force on the bolt 300 cannot be increased accordingly, and the locking property is not good.

The present invention provides an anti-loosening nut group with good shock resistance and locking property.

According to one aspect of the present invention, a locknut is provided, which includes: a first nut having a nut base and a screw portion protruding outward from a surface of the nut base, the screw portions being spaced apart There are a plurality of longitudinal grooves, so that the screwing portion is formed with a plurality of screwing claw bodies, and the inner wall of each screwing claw body is provided with a first internal thread wall for screwing with the bolt; and a pressing ring, The assembly is located outside the screwing portion of the first screw cap, and the inner wall of the pressing ring has a pressing inner wall for pressing against the outer wall of each screwing claw body of the screwing portion.

According to an embodiment of the present invention, the outer wall of the screwing portion of the first nut is a tapered outer wall, and the forced inner wall of the pressing ring is the tapered inner wall corresponding to the tapered outer wall.

According to an embodiment of the present invention, the outer wall of each screwing claw body of the screwing portion of the first nut is symmetrically protruding and deforming outward.

According to an embodiment of the present invention, the pressing ring is a second nut, and the inner wall of the second nut has the aforementioned pressing inner wall, and a second inner threaded wall, the second inner threaded wall is provided with Bolts are tightened.

According to an embodiment of the present invention, the pressing ring is a washer, and the inner wall of the washer has the aforementioned pressing inner wall.

According to the new anti-loosening nut set, the design of the plurality of screwing claw bodies of the screwing portion of the first nut and its outer wall protruding and deforming outward makes the anti-loosening nut set have good shock resistance and lock Solid.

100: first nut

110: Nut base

120: screw joint

121: Longitudinal groove

122: screw claw body

122a: Outward deformation

123: first internally threaded wall

200: pressing ring

200a: second nut

200b: Washer

210: Pressing the inner wall

220: second internally threaded wall

300: bolt

a: Outstanding deformation size

400: eccentric nut

410: Eccentric screw hole

411: Thin wall

412: thick wall

500: locking nut

510: Lock screw hole

520: inner wall

600: Object

610: Locking hole

Fig. 1 is an exploded view showing a conventional eccentric locknut set.

FIG. 2 is a combined cross-sectional view illustrating the eccentric locking nut group shown in FIG. 1.

FIG. 3 is an exploded view showing the locknut set of the first embodiment of the present invention.

FIG. 4 is a combined external view of the locknut group shown in FIG. 3.

FIG. 5 is a cross-sectional view showing the combined cross section of the locknut group shown in FIG. 3.

FIG. 6 is a sectional view of the combined longitudinal section of the locknut group shown in FIG. 3.

FIG. 7 is an enlarged view showing part A of the locknut group shown in FIG. 6.

FIG. 8 is a cross-sectional view of the combined longitudinal section of the locknut assembly according to the second embodiment of the present invention.

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description with reference to the embodiments of the drawings.

Please refer to FIG. 3 to FIG. 7, the anti-loosening nut set according to a first embodiment of the present invention includes a first nut 100 and a pressing ring 200. In the first In the embodiment, the pressing ring 200 is a second nut 200a.

The first nut 100 has a nut base 110 and a screw portion 120 protruding outward from a surface of the nut base. The outer wall of the screwing portion 120 is a tapered outer wall; and the screwing portion 120 is provided with a plurality of longitudinal grooves 121 (the embodiment of the drawing shows three) at intervals, so that each adjacent longitudinal cross section of the screwing portion 120 A plurality of screw claw bodies 122 are formed in the portion between the grooves 121 (the embodiment of the drawing shows four) screw claw bodies 122; moreover, the outer wall of each screw claw body 122 is symmetrically protruding outwardly deformed 122a, which protrudes The deformed dimension is a (for example, 1 mm). Each inner wall of each screwing claw body 122 is provided with a first internally threaded wall 123 for screwing with a bolt 300.

The pressing ring 200 (second nut 200 a) is disposed outside the screw portion 120 of the first nut 100. The inner wall of the second nut 200a has a pressing inner wall 210 and a second inner threaded wall 220. The pressing inner wall 210 is formed as a tapered pressing inner wall corresponding to the tapering outer wall of the first screw cap 100 for pressing the outer wall of each claw body 122 of the screwing portion 120 of the first screw cap 100. The second internally threaded wall 220 is for screwing with the bolt 300.

In use, after the bolt 300 passes through the locking hole 610 provided in at least one object 600, the first nut 100 is screwed to the end of the bolt 300 according to its first internal thread wall 123, and then the second nut 200a The second inner threaded wall 220 is screwed to the end of the bolt 300, and at the same time, the screwed claws 122 of the first nut 100 are forced inward by the inner wall 210 of the second nut 200 a. Accordingly, the object 600 is locked.

Since the outer walls of the screw claws 122 of the first nut 100 form a symmetrical outwardly protruding deformation 122a, the second nut 200a and the bolt 300 are screwed together and assembled on the screw of the first nut 100 When the outside of the engaging portion 120 is formed, the portion of each screwing claw 122 of the screwing portion 120 protruding outwardly deforms 122a and the second screw A plurality of tight points are naturally formed between the tight inner walls 210 of the cap 200a, and these tight points are evenly distributed on the outer periphery of the screw part 120, and the stress is evenly distributed, which makes the anti-loosening nut group good in seismic resistance. It has a good anti-loosening effect; furthermore, the pressing force of the second nut 200a against the screwing claws 122 of the screwing part 120 of the first nut 100 will be transmitted to the first inside of the first nut 100 Between the threaded wall 123 and the bolt 300, the locking force of the first nut 100 to the bolt 300 is improved, and the locking ability is good.

Please refer to FIG. 8, which is a sectional view of the combined longitudinal section of the locknut assembly according to the second embodiment of the present invention. The structure of the first nut 200 is exactly the same as that shown in the first embodiment; the pressing ring 200 is a washer 200b, and the inner wall of the washer has a pressing inner wall 210.

In use, after the bolt 300 passes through the locking hole 610 provided in at least one object 600, the threaded portion 120 of the first nut 100 is passed through the inner wall 210 of the washer 200b, and then the first bolt 100 The first internally threaded wall 123 is screwed to the end of the bolt 300. At this time, the first bolt 100 presses the slider 200b to the surface of the object 600 with its nut base 110. At the same time, as the first nut 100 After continuing the screwing, the screwing claws 122 of the first nut 100 will be forced inward by the inner wall 210 of the washer 200b. Accordingly, the object 600 is locked.

Since the outer walls of the screwing claws 122 of the first nut 100 form a symmetrically outwardly deformed deformation 122a (see FIG. 3), when the first nut 100 is screwed, the first A plurality of pressing points are naturally formed between the portions of the screwing claw bodies 122 of the screwing portion 120 of the screw cap 100 that protrude outwardly to deform 122a and the pressing inner wall 210 of the washer 200b, and these pressing The points are evenly distributed on the outer circumference of the screw part 120, and the force is evenly distributed, which makes the anti-loosening nut group good in seismic resistance and has a good anti-loosening effect; in addition, the washer 200b The pressing force of the screwing claws 122 of the screwing portion 120 will be transmitted between the first internally threaded wall 123 of the first nut 100 and the bolt 300, thereby enhancing the locking of the bolt 300 by the first nut 100 Guli, its locking is good.

According to the new anti-loosening nut set, the design of the plurality of screwing claw bodies of the screwing portion of the first nut and its outer wall protruding and deforming outward makes the anti-loosening nut set have good shock resistance and lock Solid.

Although the present invention is disclosed as above by way of implementation, it is not intended to limit the present invention. Anyone who is familiar with this skill can make various modifications and retouching without departing from the spirit and scope of the present invention, so the scope of protection of the present invention The scope defined in the appended patent application shall prevail.

100: first nut

110: Nut base

120: screw joint

121: Longitudinal groove

122: screw claw body

122a: Outward deformation

123: first internally threaded wall

200: pressing ring

200a: second nut

210: Pressing the inner wall

220: second internally threaded wall

a: Outstanding deformation size

Claims (5)

An anti-loosening nut group for fixing with a bolt, the anti-loosening nut group includes: A first nut has a nut base and a screwing portion protruding outward from a surface of the nut base, the screwing portion is provided with a plurality of longitudinal grooves at intervals, so that the screwing portion is formed with a plurality of A screwing claw body, an inner wall of each screwing claw body is provided with a first internally threaded wall, the first internally threaded wall is provided for screwing with the bolt; and A pressing ring is arranged outside the screwing part of the first nut. The inner wall of the pressing ring has a pressing inner wall. The pressing inner wall is for pressing each of the screwing parts. Screw the outer wall of the claw body. The anti-loosening nut set according to claim 1, wherein the outer wall of the screwing portion of the first nut is a tapered outer wall, and the forced inner wall of the pressing ring is corresponding to the tapered outer wall The cone presses against the inner wall. The locknut set according to claim 1 or 2, wherein the outer wall of each screwing claw body of the screwing portion of the first nut is symmetrically protruding outwardly. The locknut set according to claim 3, wherein the pressing ring is a second nut, the inner wall of the second nut has the pressing inner wall, and a second internally threaded wall, the The second internally threaded wall is provided for screwing the bolt. The locknut set according to claim 3, wherein the pressing ring is a washer, and the inner wall of the washer has the pressing inner wall.

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