CN201288750Y - Rapid bolts pair - Google Patents

Abstract

A quick bolt pair comprises a bolt and a nut matched with the bolt. The screw stem of the bolt is provided with annular triangle screw thread which are mutually parallel, the inner hole of the nut is smooth hole and provided with a plurality of abdicating troughs, two threaded rods which are perpendicular with the axes of the inner hole of the nut and symmetrically distributed at each abdicating troughs, a cylindrical threaded rod is installed in each threaded rod hole. When the bolt is pressed aiming at the nut, the elastic threaded rod is pushed to occur elastic abdication by the tooth type bevel of the bolt, finally the elastic threaded rod is embedded into the tooth root of the bolt, so as to achieve the purpose of the locking workpiece. The quick bolt pair has the advantages of simple structure, convenient manufacture, quick clamping, simple operation, low cost, and wide application range.

Description

A fast bolt pair

Technical field

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

Background technique

At present, the general-purpose bolts include triangular thread bolts, pipe thread bolts, trapezoidal thread bolts, rectangular thread bolts, and serrated thread bolts. These bolts 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 design a bolt pair capable of quickly locking the workpiece.

A fast bolt pair of the utility model includes bolts and matching nuts, and is characterized in that

1. The screw rod of the bolt has circular triangular threads parallel to each other;

2. The nut, A, the inner hole of the nut is a light hole, and has several relief grooves; B, the width and depth of the relief grooves are not less than the diameter of the tooth bar; C, each relief groove has Two threaded rod holes perpendicular to the axis of the inner hole of the nut and distributed symmetrically; the distance between the two threaded rod holes is not greater than the diameter of the screw crest and not smaller than the diameter of the screw root; D, the diameter of the threaded rod hole The diameter of the hole is not larger than the screw and the pitch; E, the distance between every two relief slots is an integer multiple of the pitch of the screw; F, a cylindrical tooth rod is installed in each tooth rod hole.

A fast bolt pair of the utility model, the tooth bar is a spring steel wire, when the work of locking the workpiece is completed, the bolt is pushed hard, and the inclined surface of the annular triangular thread of the screw rod pushes the tooth bar, the tooth bar is elastically abdicated, and the screw rod is quickly advanced to When in the locked position, the tooth rod returns elastically and is locked in the tooth root of the circular triangular thread of the screw rod, thereby completing the work of locking the workpiece. The fast bolt pair has the advantages of simple structure, convenient manufacture, fast clamping, easy operation, low cost and wide application range.

Description of drawings

Figure 1 is a schematic diagram of quick bolt pair assembly;

Fig. 2 is a nut schematic diagram;

Figure 3 is a schematic diagram of the bolt.

Detailed ways

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

Embodiment 1. A quick bolt pair

As shown in Fig. 1 and Fig. 2, a quick bolt pair of the present utility model comprises a bolt 1 and a nut 2 matched therewith. The screw rod of the bolt 1 has annular triangular threads parallel to each other; the bevel angle of the tooth profile is 50-60 degrees. The inner hole of the nut 2 is a light hole with two relief grooves, and the depth of the relief groove is equal to the diameter of the tooth bar 3; at each relief groove, there are two tooth bars perpendicular to the axis of the inner hole of the nut 2 and symmetrical hole; the distance between the two tooth rod holes is equal to the diameter of the screw crest; the diameter of the tooth rod hole is equal to the matched screw and the pitch; the distance between the two relief grooves is 10 times the pitch of the matched screw; each A cylindrical elastic tooth bar 3 is installed in the tooth bar hole, and the cooperation between the tooth bar 3 and the tooth bar hole is a transition fit.

The purpose of a quick bolt pair of the utility model is the same as that of an ordinary bolt pair, and its usage method is as follows:

As shown in Figure 1, Figure 2, and Figure 3, when the bolt 1 is aligned with the hole of the nut 2 and pressed in, the elastic tooth bar 3 will give way elastically under the push of the bevel angle of the tooth profile of the bolt 1, and finally embedded in the tooth root of the bolt 1 to achieve the purpose of locking the workpiece.

When it is required to loosen the workpiece, just pull out the bolt directly.

Claims (4)

1, a kind of quick bolt pair comprises bolt and supporting with it nut, it is characterized in that

(1) bolt, the screw rod of bolt have the annular V thread screw that is parallel to each other;

(2) nut, the endoporus of A, nut is a unthreaded hole, and has several slots to make way; The width of B, slot to make way and the degree of depth all are not less than the diameter of tooth bar; C, have at each slot to make way place and nut inner hole axis normal and 2 tooth bar holes being symmetrically distributed; Distance between 2 tooth bar holes be not more than join the diameter of screw rod crest, and be not less than join the diameter of screw rod root of the tooth; The aperture in D, tooth bar hole is not more than institute and joins screw rod and pitch; Distance between E, per 2 slots to make way is the integral multiple of join screw pitch; A cylindrical tooth bar is installed in F, each tooth bar hole.

2, a kind of quick bolt pair according to claim 1, the tooth form oblique angle that it is characterized in that screw rod are 50～60 degree.

3, a kind of quick bolt pair according to claim 1 and 2, the endoporus that it is characterized in that nut is the unthreaded hole with 2 slots to make way, the degree of depth of slot to make way equals the diameter of tooth bar; Have and nut inner hole axis normal and 2 symmetrical tooth bar holes at each slot to make way place; Distance between 2 tooth bar holes equal join the diameter of screw rod crest; The aperture in tooth bar hole equals institute and joins screw rod and pitch; Distance between 2 slots to make way is join 10 times of screw pitch; An Elastic Cylindrical tooth bar is installed in each tooth bar hole.

4,, it is characterized in that tooth bar and cooperating of tooth bar hole are transition fit according to claim 1 or 3 described a kind of quick bolt pairs.

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