Blocking and antiunloading nut

A nut and anti-unloading technology, applied in the direction of nuts, screws, bolts, etc., can solve the problems of reduced performance, cumbersome assembly, uncomfortable tightening, etc., and achieve the effects of reducing friction, good anti-theft effect, and convenient screwing.

A nut and anti-unloading technology, applied in the direction of nuts, screws, bolts, etc., can solve the problems of reduced performance, cumbersome assembly, uncomfortable tightening, etc., and achieve the effects of reducing friction, good anti-theft effect, and convenient screwing.

CN1948768AInactive Publication Date: 2007-04-18胡妍
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  • Blocking and antiunloading nut
  • Blocking and antiunloading nut
  • Blocking and antiunloading nut

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] See Figures 1 to 6, this embodiment is an anti-loosening and anti-unloading nut, which includes a round nut body 1 and a hexagonal outer cover 2; the center of the nut body 1 is provided with an inner screw hole 11, so that The upper surface of the nut body 1 is provided with three fastening grooves 12, and the fastening grooves 12 are surrounded by a downwardly inclined guide surface 121 and a blocking surface 122; in this embodiment, the guide surface 121 It is an inclined surface, and the blocking surface 122 is a vertical surface; the lower part of the nut body 1 is provided with a supporting portion 13 having an arc-shaped surface 131 . The supporting part 13 with the arc surface can reduce the friction force between the nut body and the outer cover when fastening and screwing in, making the screwing in more convenient and easy.

[0026] The center of the outer cover 2 is provided with a circular cavity 21, the outer wall of the outer cover 2 is provided with a hex...

Embodiment 2

[0033] See Figure 8, the anti-loosening and anti-unloading nut of this embodiment is basically the same as that of Embodiment 1, the difference is that: the guide surface 121 is a downwardly inclined arc surface, and the blocking surface 122 is a slightly oriented As for the downward inclined surface, the inclination direction of the blocking surface 122 is the same as the inclination direction of the guiding surface 121 .

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Abstract

The invention relates to a locknut, which comprises a nut body and a casing. In the centre of the nut body is disposed an internal screw hole and on the top surface of the nut body is disposed at least one fastening slot surrounded by a downward sloping guide surface and a blocking surface. In the centre of the casing is disposed a vestibule and on the outside wall of the casing is disposed a forced part. The elastic pieces disposed on the inside wall of the casing top surface slopes downward and then extends into the above fastening slot. The above nut body is mounted in the vestibule of the above casing.

Description

technical field [0001] The invention relates to a fastener, in particular to an anti-loosening anti-unloading nut. Background technique [0002] The anti-dismounting nut in the prior art is axially symmetrical to make two arc grooves from deep to shallow on the wall of the inner screw hole. The axial length of the groove is generally 2.5 to 4.5 pitch, and a pin is installed in the groove respectively. Or steel balls, and then use core plugs and end retaining rings to fix the relative positions of pins or steel balls. [0003] The shortcoming of this type of anti-loosening anti-unloading nut is: (1) arc grooves are opened on the wall of the inner screw hole, which greatly damages the thread, reduces its due performance, and is not suitable for fastening. (2) The pin or steel ball is easily pushed out of the arc groove along with the screwing of the nut body, thereby losing the anti-unloading function. (3) The pin pin is also easy to block the anti-unloading nut obliquely an...

Claims

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Application Information

Patent Timeline
18 Apr 2007
Publication
CN1948768A
IPC
F16B41/00; F16B39/28; F16B37/00
Inventors
钱成法