CN202251356U - Lock washer - Google Patents

Abstract

The utility model discloses a lock washer which comprises two same backing rings, wherein each backing ring is shaped like a circular ring, the inner side and the outer side of the circular ring are provided with helical tooth surfaces which are radially tightly arranged, and the quantity of the helical tooth surfaces on the inner sides is 1/6 that of the helical tooth surfaces on the outer sides. The lock washer achieves a perfect lock effect on the basis of a simple geometrical principle through breaking through the traditional lock principle of a fastening member.

Description

A kind of lock washer

Technical field

The utility model relates to a kind of lock washer, belongs to mechanical field.

Background technique

The most conventional fastening piece is the most representative with two kinds at present; A kind of is to reach the locking effect of short-term to increase self friction power; For example: spring washer, outer flank of tooth lock washer etc.; But frictional force itself is not a constant value, and it can be consumed along with the sustained oscillation of machinery thereupon, also can go down because of environment.A kind of in addition is to rely on screw thread distortion or machinery type to reach anti-loosing effect, but this mode does not possess stability, has very big potential safety hazard.

The model utility content

The utility model technical problem to be solved is that the deficiency that is directed against existing technology provides a kind of lock washer.

Lock washer, said lock washer is made up of the two same gasket ring, and each gasket ring is circular, and the inside and outside both sides of annulus all are radial compact arranged pitch faces, and the quantity of inboard pitch face is the sixth of outside pitch face quantity.

Lock washer is to break through the locking theory of conventional fastener, relies on the simple geometric principle to reach perfect anti-loosing effect.

Description of drawings

Fig. 1 is the inside structure schematic representation of gasket ring;

Fig. 2 is the outboard structure schematic representation of gasket ring;

Fig. 3 is the side structure schematic representation of gasket ring;

Fig. 4 is the user mode schematic representation of gasket ring.

Embodiment

Below in conjunction with specific embodiment, the utility model is elaborated.

Referring to figs. 1 to Fig. 4; Lock washer is made up of the two same gasket ring, and each gasket ring is circular, and the inside and outside both sides of annulus all are radial compact arranged pitch faces; And the quantity of inboard helical teeth 1 is the sixth of outside pitch face 2 quantity; Must the inboard pitch face 1 of two gasket rings is relative during application, make interlock (with reference to figure 4) each other between the inboard pitch face 1, use in pairs.

Because the more inboard pitch face more than 1 of quantity of the radial pitch face 2 in the outside; Therefore, after bolton, the frictional force between outside pitch face and the bolt is greater than frictional force between the inboard pitch face; So when loosening trend appears in bolt or nut along with the vibration of machinery; Only only allow 1 relative changing of the relative positions of inboard pitch face, in the changing of the relative positions, produce sloping rake angle between the inboard pitch face 1, and the sloping rake angle fixed value that is produced is greater than the bolt thread angle.

Should be understood that, concerning those of ordinary skills, can improve or conversion, and all these improvement and conversion all should belong to the protection domain of the utility model accompanying claims according to above-mentioned explanation.

Claims (1)

1. lock washer; It is characterized in that said lock washer is made up of the two same gasket ring, each gasket ring is circular; The inside and outside both sides of annulus all are radial compact arranged pitch faces, and the quantity of inboard pitch face is the sixth of outside pitch face quantity.

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