CN2665439Y - Wedge positioning retainer nut and screw bolt pair - Google Patents

Abstract

The utility model discloses an improved nut-screw pair, which is characterized in that a plurality of horizontal through grooves with rectangle sections are evenly distributed on the upper plane of the nut; a plurality of vertical long blind grooves with rectangle sections are evenly distributed along the circle of the upper end of the screw outside thread; the long blind groove is as wide as the through groove; a wedge with a rectangle section is equipped in each through groove of the nut, the bottom side surface of the left end of the wedge is provided with a lug boss and the bottom surface of the right end of the wedge is an inclined plane; when the nut is screwed on the screw to make one through groove aim at one long blind groove, the wedge is lightly hammered into the long blind groove to made the nut-screw located, then the nut is slightly twisted counterclockwise by a wrench to made the inside thread of the nut press and fasten the lug boss of the wedge, so that the wedge is clamped without loose, the wedge is ensured to be located reliably, the nut-screw is ensured not to self-loose and is easy to be mounted and dismounted.

Description

The anti-loosening nut-screw pair of wedge location

Technical field

The utility model is a kind of improved spiral marking connection pair.

Background technique

Existing Chang Yong nut-screw pair, tightening the back uses a period of time to get off, the influence of extraneous factor such as shaken, can looseningly voluntarily make to connect and lose efficacy, the employing that has enlarges spiral shell button in the nut portion, wedging half arc chock prevents to become flexible in interior spiral shell button, but needs to use special tool to come spinning in and out half arc chock, has strengthened workload and dismounting difficulty.

Summary of the invention

The purpose of this utility model is the anti-loosening nut-screw pair of a kind of wedge of design location, and nut screwing clamping can not become flexible after on the screw rod voluntarily, and the dismounting operation is convenient and reliable.

The purpose of this utility model is achieved like this: a kind of by nut, the anti-loosening nut-screw pair of the wedge location that screw rod is formed, it is characterized in that the straight horizontal groove that uniform several cross sections are rectangle on plane on the nut, at the long blind groove of vertical uniform several rectangles of the externally threaded upper end section circumference of being with of screw rod, the groove width of this direct through groove and long blind groove equates, equipped cross section is the chock of rectangle and right rear band inclined end face left end section band side boss in the direct through groove of nut, when being screwed on the screw rod and tightening, nut make arbitrary direct through groove aim at long blind groove, rap chock with hand hammer, the left end section of chock enters in the long blind groove, side boss on the chock also enters in the long blind groove and is positioned at downside, with nut and screw rod location, with spanner nut is twisted slightly counterclockwise then, make the internal thread fastening of nut push down the side boss of chock, chock is blocked and can not get loose, thereby guarantee the reliability of wedge location, make nut, screw rod can not become flexible voluntarily, and easy accessibility.

The anti-loosening nut-screw pair of wedge that the utility model is carried location is simple in structure, and easy accessibility is safe and reliable.

Description of drawings

Fig. 1 is the main cross-sectional schematic of the anti-loosening nut-screw pair of wedge that the utility model is carried location.

Fig. 2 is the schematic top plan view of the anti-loosening nut-screw pair of wedge that the utility model is carried location.

Embodiment

From Fig. 1, among Fig. 2 as can be seen: a kind of by nut 2, the anti-loosening nut-screw pair of the wedge location that screw rod 1 is formed, it is characterized in that uniform several straight horizontal grooves 5 that has on plane on the nut 2, the cross section of this direct through groove 5 is a rectangle, in the externally threaded upper end section of being with of screw rod 1, several vertical long blind grooves 4 of circumference uniform distribution, the cross section of this long blind groove 4 also is a rectangle, and the groove width of long blind groove 4 equates with direct through groove 5, equipped chock 3 in arbitrary direct through groove 5 of nut 2, the cross section of this chock 3 also is a rectangle, the downside of its left end section is worn boss, and the bottom surface of right rear is a tapered plane; After nut 2 is tightened on the screw rod 1 and makes arbitrary direct through groove 5 aim at long blind groove 4, rap chock 3 with hand hammer, boss on the left end section of chock 3 is entered in the long blind groove 4, with nut 2 and screw rod 1 location, with spanner nut 2 is twisted slightly counterclockwise then, make the internal thread fastening of nut 2 tightly suppress the downside boss of chock 3, chock 3 is blocked and can not get loose, thereby guarantee the reliability of wedge location, nut 2 screw rods 1 can not become flexible voluntarily, when tearing nut 2 open, need only with spanner nut 2 be twisted clockwise earlier, the boss on the chock 3 is deviate from, prize chock 3 right tail bottoms with screw-driver then, chock 3 is taken out, just can unscrew nut 2 and take off, so dismounting is all very convenient; In addition,, on its externally threaded end section, open the blind groove 4 of same length, when nut 2 is tightened on the bolt, adopt same chock 3 location, can obtain enough anti-loosening effects equally with six sides' bolt (not drawing among the figure).

Claims (1)

1, a kind of anti-loosening nut-screw pair of the wedge location of forming by nut (2), screw rod (1),

It is characterized in that:

A, uniformly on the last plane of nut (2) have a straight horizontal groove (5) that several cross sections are rectangle;

B, in the externally threaded upper end section of being with of screw rod (1), circumference uniform distribution has several vertical long blind grooves (4), cross section of this long blind groove (4) is a rectangle, and groove width equates with the groove width of direct through groove (5);

C, nut (2) are gone up equipped chock (3) in any direct through groove (5), and the cross section of this chock (3) also is a rectangle, and the downside of its left end section has boss, and the bottom surface of right rear is a tapered plane.

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