Device for preventing loosening of nuts on vehicle tire wheels

Abstract

This article is a nut loosening prevention device for a vehicle tire wheel. More specifically, as shown in a reference perspective view, reference Fig. 1 showing a state before a second member is attached to a nut that tightens a bolt to which a first member of this article is attached, and reference Fig. 2 showing a state after the article is attached to the nut, this article includes a first member having a cutout portion and an outer peripheral recess, a first through hole that abuts against at least a part of the nut, and three outer wall mating portions, and a second member having a second through hole into which the first member is detachably fitted, an inner wall mating portion into which the outer wall mating portion fits when the first member is fitted, and a protrusion that can engage with the outer peripheral recess when fitted into the first member. In addition, in this article, when the second member of the article is moved in the direction of the white arrow, the first member is fitted into the second through hole of the second member, the outer wall mating portion of the first member is mated with the inner wall mating portion of the second member, and the protrusion is engaged with the outer peripheral recess, the unevenness of the first member and the unevenness of the second member come into contact. As a result, the abutment of the above-mentioned unevennesses, the mating of the outer wall mating portion with the inner wall mating portion, and the engagement of the protrusion with the outer peripheral recess make it difficult for the first member to rotate in the second through hole of the second member, and / or the range of rotation can be highly accurately limited, so that when the article shown in Reference Figure 1 showing the usage state is attached, the loosening of the nut can be highly accurately suppressed. In one example of this article, two first through holes into which two nuts can be fitted at once are provided as shown in the reference perspective view and Reference Figures 1 and 2 showing the usage state, but the use example of this article is not limited to this. In addition, the materials of the first member and the second member are not particularly limited, but a typical example of the material is resin. In addition, the length of "W" shown in the reference plan view is about 53 mm.

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