CN201288749Y - Rapid bolt pair - Google Patents

Abstract

A quick screw pair includes screws and nuts. There are two parallel planes on both sides of the screw. The wall of the inner hole in the nut corresponding to the screw is a smooth wall. The inner diameter of the smooth wall is not less than the outer diameter of the screw. The chord length of the smooth wall is not less than the distance between the two planes of the screw. A distance of , the screw can translate in the nut along the axial direction. When in use, the screw can be aligned with the position corresponding to the nut and quickly advanced to the apex along the axis direction, and then the screw is rotated so that the threads of the screw and the nut fit together until the workpiece is locked. The operation is fast, simple and effective.

Description

A quick screw pair

technical field

The utility model relates to a screw pair, in particular to a fast screw pair that can be tightened and loosened quickly.

Background technique

The current general-purpose screws include triangular thread screws, pipe thread screws, trapezoidal thread screws, rectangular thread screws, and serrated thread screws. These screws have their own characteristics, but they must be tightened round by round when tightening, which is less efficient.

The utility model patent No. 200720146596.1 discloses "a quick screw". The quick screw includes: a screw head with a top surface and a screw head joint surface opposite to the top surface; a joint surface protrudes in a direction perpendicular to the joint surface; and at least one pair of mating tooth surfaces protrudes on the opposite side of the screw shank away from the end of the screw head. The quick connection structure includes: a quick screw; a panel with a screw through hole for the screw rod and the matching tooth surface to pass through; a bottom plate with a screw through hole for the screw rod and the matching tooth surface to pass through; and an elastic element elastically deformed It is arranged between the screw head joint surface of the quick screw and the panel. After the mating tooth surface of the quick screw passes through the through holes of the panel and the bottom plate, the screw is rotated at a predetermined angle to realize the connection, and the screw is rotated to release the connection.

Patent No. 200520048055.6 is a utility model patent, which discloses a "quick bolt assembly for combined glued formwork", including a T-shaped screw, a nut, and a compression sleeve. The head of the T-shaped screw is T-shaped, the bottom is flat, and a nut The end surface is a hexagonal flange surface, the other end surface is a spherical concave surface, the upper surface of the compression sleeve is a spherical convex surface, which matches the spherical concave surface of the nut, the middle part of the compression sleeve is cylindrical, and a through hole is opened in the center of the top, and the bottom of the compression sleeve is cylindrical. The shape is a boss, the bottom of the T-shaped screw passes through the channel of the compression sleeve and the nut, and the T-shaped head of the T-shaped screw is located under the shape of the compression sleeve.

The existing quick screw or quick bolt assembly has a relatively complicated design structure and a small scope of application.

Contents of the invention

The purpose of the utility model is to provide a fast screw pair that can be tightened and loosened quickly.

A quick screw pair of the utility model, comprising a screw and a nut, is characterized in that

1. There are two parallel planes on both sides of the screw, and the distance between the screw axis and the two planes is equal;

2. The wall of the inner hole in the nut corresponding to the screw thread is a smooth wall, the inner diameter of the smooth wall is not less than the outer diameter of the screw, and the chord length of the smooth wall is not less than the distance between the two planes of the screw; the nut and the screw The position corresponding to the thread is the position at which the screw can translate axially in the nut.

A fast screw pair of the utility model, because part of the thread is cut off on both sides of the ordinary screw, two planes parallel to each other and equidistant from the axis are formed; the thread of the part corresponding to the ordinary nut and the screw rod is cut off, the position If the screw hole is a smooth wall, the screw can translate along the axis in the nut. When in use, the screw can be aligned with the position corresponding to the nut and quickly pushed along the axial direction until it cannot be pushed, and then the screw is rotated so that the threads of the screw and the nut fit together until the workpiece is locked. The operation is fast, simple and effective. The fast screw pair of the utility model has the advantages of simple structure, convenient manufacture, low cost and good use value.

Description of drawings

Figure 1 is a schematic diagram of a screw;

Fig. 2 is the A-A sectional schematic diagram of screw; k is the distance between two planes;

Fig. 3 is a nut schematic diagram; K is the chord length of the light wall in the nut;

Fig. 4 is a schematic cross-sectional view of nut B-B.

Detailed ways

In order to fully disclose a quick screw pair of the present utility model, it will be described below in conjunction with the embodiments.

Embodiment 1: A quick screw pair

As shown in Figure 1, Figure 2, Figure 3, and Figure 4, the screw 1 is an M10 screw, and the two sides of the screw have two parallel planes, the distance between the screw axis and the two planes is equal, and the distance between the two planes k is 6 mm; the inner hole in the nut 2 corresponding to the thread of the screw is a smooth wall, the diameter of the hole of the smooth wall is 10 ₀ ^+0.5 mm, and the chord length K of the smooth wall is 6 ₀ ^+0.5 mm. The thread profile of the quick screw can be various thread, and other parameters are consistent with the ordinary standard thread.

The method of using the fast screw pair of the utility model is as follows: 1. Lock the screw: Align the screw rod of the screw with the corresponding position of the nut, push it in along the axial direction until it cannot be pushed, and then rotate the screw in the tightening direction until the screw is locked. tight. 2. Loosen the screw: first use a tool such as a hand or a wrench to loosen the screw in the opposite direction, then turn the two parallel surfaces of the screw to the position corresponding to the nut, and then pull out the screw.

Claims (3)

1, a kind of quick screw pair comprises screw and nut, it is characterized in that

(1) both sides of screw rod have 2 planes parallel to each other, and screw axis equates with the distance on 2 planes;

(2) be the light wall with the hole wall of the endoporus of screw flight opposite position in the nut, the internal diameter of light wall is not less than the external diameter of screw rod, and the chord length of light wall is not less than screw rod two interplanar distances.

2, a kind of quick screw pair according to claim 1 is characterized in that screw is the M10 screw; With the light wall of the corresponding endoporus of screw flight, its bore dia is 10 in the nut ₀ ^{+ 0.5}Mm.

3, a kind of quick screw pair according to claim 1 and 2 is characterized in that 2 the interplanar distances in screw rod both sides are 6mm; With the light wall of the corresponding endoporus of screw rod, its chord length is 6 in the nut ₀ ^{+ 0.5}Mm.

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