CN217055915U - Locknut washer - Google Patents

Abstract

The utility model discloses a locknut packing ring, including nut and packing ring, the below of packing ring is provided with anti-skidding tooth, the top be provided with the bulge loop, the below of nut is provided with heavy groove, be provided with a plurality of first anti-rotation teeth on the outer wall of bulge loop, be provided with a plurality of seconds on the inner wall of heavy groove and prevent that the tooth is prevented to the second, the first circle of preventing that prevents that tooth outer fringe constitutes is not more than the second and prevents the circle that the tooth inner edge constitutes, the utility model discloses when screwing the nut, the packing ring can not obstruct screwing of nut, and after screwing, the nut forms integratively with the packing ring at the circumferencial direction basically, and the nut can not take place relative rotation with the packing ring, on the harder nut of specially adapted material.

Description

Locknut washer

Technical Field

The utility model belongs to the technical field of the fastener, more specifically the utility model relates to a locknut packing ring that says so.

Background

The threaded fastener clamps the coupled member by maintaining a certain axial force, but the threaded fastener is loosened by spinning due to vibration and impact load, or the axial force of the threaded fastener is reduced due to material relaxation and deformation, so that the threaded coupling fails, and the like.

At present, a double-stack self-locking washer is generally adopted for a nut with a good anti-loosening effect, but the contact surface of the washer and the nut is made of hard metal, and even if anti-skidding teeth or threads are arranged on the upper surface of the washer, the washer and the nut still loosen during high-frequency vibration.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a when screwing the nut, the packing ring can not obstruct screwing of nut, and after screwing, the nut forms an organic whole with the packing ring at the circumferencial direction basically, and the nut can not take place relative rotation with the packing ring, on the harder nut of specially adapted material.

In order to achieve the above purpose, the utility model provides a following technical scheme: the utility model provides a locknut packing ring, includes nut and packing ring, the below of packing ring is provided with anti-skidding tooth, the top be provided with the bulge loop, the below of nut is provided with heavy groove, be provided with a plurality of first anti-rotation teeth on the outer wall of bulge loop, it prevents the tooth to be provided with a plurality of seconds on the inner wall of heavy groove, the first circle of preventing that tooth outer fringe constitutes is not more than the second and prevents the circle that tooth inner edge constitutes.

Furthermore, the front side surface of the first anti-rotation tooth is an inclined first guide surface, the rear side surface of the first anti-rotation tooth is a first blocking surface, the front side surface of the second anti-rotation tooth is a second blocking surface, and the rear side surface of the second anti-rotation tooth is a second guide surface.

Further, the inner diameter of the convex ring is larger than the inner diameter of the thread on the nut.

The height of the convex ring is further smaller than the depth of the sinking groove.

Further the gasket is a tapered gasket.

The anti-slip teeth are further unidirectional teeth.

Compared with the prior art, the beneficial effects of the utility model are that: in the nut screwing process, the washer can not rotate with a face to be fastened, anti-skidding teeth or the face to be fastened is prevented from being abraded, after the nut is screwed, the washer and the fastened face have a good anti-skidding structure to prevent the washer from rotating, the nut is slightly dislocated with the washer in the using process, when the nut rotates in the unscrewing direction, the first anti-skidding teeth are in contact with the second anti-skidding teeth, and therefore the nut and the washer form a circumferential locking state, namely the nut cannot be unscrewed, and the nut is particularly suitable for being made of hard materials.

Drawings

Fig. 1 is a cross-sectional view of a locknut washer of the present invention;

FIG. 2 is a schematic view of the first anti-rotation teeth and the second anti-rotation teeth of the present invention;

fig. 3 is an enlarged view of a portion a in fig. 2.

Reference numerals are as follows: 1. a nut; 13. sinking a groove; 15. a second rotation prevention tooth; 151. a second guide surface; 152. a second blocking surface; 351. a first guide surface; 352. a first blocking surface; 2. a gasket; 21. anti-slip teeth; 3. a convex ring.

Detailed Description

Embodiments of a locknut washer of the present invention are further described with reference to fig. 1 to 3.

In the description of the present invention, it should be noted that, for the terms of orientation, such as "central", "transverse (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like, indicate that the orientation and positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, but not for indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and should not be construed as limiting the specific scope of the present invention.

Furthermore, if any, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and "a plurality" or "a plurality" in the description of the invention means two or more unless a specific definition is explicitly provided.

The utility model provides a locknut packing ring, includes nut 1 and packing ring 2, the below of packing ring 2 is provided with anti-skidding tooth 21, the top be provided with bulge loop 3, the below of nut 1 is provided with heavy groove 13, be provided with a plurality of first anti-rotation teeth 35 on the outer wall of bulge loop 3, be provided with a plurality of seconds on the inner wall of heavy groove 13 and prevent that tooth 15 is prevented to the first circle that prevents that tooth 35 outer fringe constitutes is not more than the second and prevents the circle that tooth 15 inner edge constitutes.

The first anti-rotation teeth 35 and the second anti-rotation teeth 15 are all evenly distributed along the circumference.

In order to make the protruding ring 3 fully extend into the sinking groove 13, it is preferable that the height of the protruding ring 3 is smaller than the depth of the sinking groove 13.

In the using process, firstly, the washer 2 is sleeved on the bolt and placed at a to-be-locked position, then the bolt is screwed in a spiral mode, when the convex ring 3 extends into the sinking groove 13, the position of the washer 2 is properly adjusted, the first anti-rotation teeth 35 do not touch the second anti-rotation teeth 15 as much as possible, the nut 1 is locked with the screw, the nut 1 is pressed above the washer 2, the anti-slip teeth 21 are pressed on a locking surface, along with the use, the washer 2 and the nut 1 are slightly dislocated in the radial direction, part of the first anti-rotation teeth 35 and the second anti-rotation teeth 15 are mutually clamped, namely, the nut 1 and the washer 2 are relatively fixed in the circumferential direction, and at the moment, the nut 1 cannot rotate relative to the washer 2 and is loosened due to vibration.

The first anti-rotation teeth 35 and the second anti-rotation teeth 15 in this embodiment each extend in the vertical direction.

In this embodiment, the front side of the first anti-rotation tooth 35 is an inclined first guiding surface 351, the rear side is a first blocking surface 352, the front side of the second anti-rotation tooth 15 is a second blocking surface 152, and the rear side is a second guiding surface 151.

Preferably wherein the first 352 and second 152 blocking surfaces are inclined at a greater angle than the first 351 guiding surfaces, which causes the first 35 and second 15 anti-rotation teeth to form a wedge shape.

The front side in this embodiment refers to the front side in the loosening direction of the nut 1, and the rear side refers to the rear side in the loosening direction of the nut 1, as shown in fig. 2 and 3, during the tightening process of the nut 1, the nut 1 can be tightened more easily due to the cooperation of the first guiding surface 351 and the second guiding surface 151, and after the locking process, the first blocking surface 352 and the second blocking surface 152 will prevent the nut 1 and the washer 2 from rotating relatively.

The inner diameter of the convex ring 3 is preferably larger than the inner diameter of the upper thread of the nut 1, so that the washer 2 can be smoothly sleeved on the screw, and the nut 1 and the washer 2 can be conveniently dislocated in the radial direction after the nut 1 is locked.

The preferred packing ring 2 of this embodiment is a conical packing ring 2, as shown in fig. 1, the conical packing ring 2 forms an elastic structure, during the locking process, the anti-slip teeth 21 can not contact with the surface to be locked, the packing ring 2 rotates relatively, and along with the screwing of the nut 1, the packing ring 2 deforms, the anti-slip teeth 21 contact and press against the surface to be locked, so as to reduce the wear of the anti-slip teeth 21, and meanwhile, the conical packing ring 2 can provide a pre-tightening force between the screw and the nut 1, so as to further prevent loosening.

The preferred anti-slip teeth 21 of this embodiment are unidirectional teeth.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection not only limits in above-mentioned embodiment, and the fan belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that modifications and embellishments within the scope of the present disclosure may be made by those skilled in the art without departing from the principles of the present disclosure.

Claims (6)

1. The utility model provides a locknut packing ring, includes nut and packing ring, its characterized in that: the anti-skidding nut is characterized in that anti-skidding teeth are arranged below the washer, a convex ring is arranged at the top of the washer, a sunk groove is formed below the nut, a plurality of first anti-rotation teeth are arranged on the outer wall of the convex ring, a plurality of second anti-rotation teeth are arranged on the inner wall of the sunk groove, and the circle formed by the outer edges of the first anti-rotation teeth is not larger than the circle formed by the inner edges of the second anti-rotation teeth.

2. The locknut washer of claim 1 wherein: the front side surface of the first anti-rotation tooth is an inclined first guide surface, the rear side surface of the first anti-rotation tooth is a first blocking surface, the front side surface of the second anti-rotation tooth is a second blocking surface, and the rear side surface of the second anti-rotation tooth is a second guide surface.

3. The locknut washer of claim 2, wherein: the inner diameter of the convex ring is larger than that of the screw thread on the nut.

4. The locknut washer of claim 3, wherein: the height of the convex ring is smaller than the depth of the sinking groove.

5. The locknut washer according to claim 4, wherein: the gasket is a tapered gasket.

6. The locknut washer of claim 5 wherein: the anti-slip teeth are unidirectional teeth.

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