CN2721951Y

CN2721951Y - Locked durable screw bolt assembly

Info

Publication number: CN2721951Y
Application number: CN 200420087288
Authority: CN
Inventors: 张启芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-08-17
Filing date: 2004-08-17
Publication date: 2005-08-31
Anticipated expiration: 2014-08-17

Abstract

The utility model discloses a locked durable screw bolt assembly, comprising a bolt, a cap nut and a clip ring. The utility model is characterized in that a groove is longitudinally provided along the screw rod at the screw end of the bolt. One face of the cap nut is provided with a concave groove whose diameter is bigger than the diameter of a thread hole. The concave groove is concentric with the thread hole. The bottom of the concave groove is evenly provided with a circle of jagged teeth. The external shape of the clip ring is corresponded to the shape of the cap nut concave groove. One end of the clip ring is provided with teeth matched with the teeth on the side wall of the concave groove. The insides of one end or two ends of the clip ring are provided with bosses corresponding to the bolt groove. The utility model has the advantage of reasonable structure. The cap nut is fastened on the bolt without loosening and falling off. The safe reliability of the fastened object is ensured. The locked durable screw bolt assembly can be widely applied to mechanism devices such as vibration screen, driving shaft, vehicles, etc. and durable fastening locations such as steel frame, bridge, railway, etc.

Description

Retaining permanent bolt assembly

One, technical field: the utility model relates to a kind of retaining permanent bolt assembly.

Two, background technique: in the daily activity in production that we are engaged in, nut on bolt loosening with come off troubling, general solution is to install plain washer and elastic washer when upper cap nut additional, though this method has solved loosening and the come off problem of nut on bolt to a certain extent, but in the occasion that has oscillatory property and rotation character, for example: machinery, railway beam-and-rail etc. is located, and nut becoming flexible and coming off on bolt happens occasionally, and it is anti-to make people's air defense be unequal to.Nut becoming flexible and coming off on bolt not only brought injury to machinery, brought hidden danger also for people's inherently safe.

Three, summary of the invention: the purpose of this utility model provides the retaining permanent bolt assembly that a kind of nut can only precession on bolt can not retreat.

The purpose of this utility model realizes in the following manner:

The utility model comprises bolt, nut, check ring, it is characterized in that: longitudinally be provided with a groove from the threaded end of bolt along screw rod; The one side of nut be provided with one with the nest groove of the concentric bore of tapped hole greater than the tapped hole diameter, be provided with all jagged teeth equably in the bottom of nest groove; The profile of check ring is corresponding with the shape of nut nest groove, is shaped on the teeth that the teeth on the sidewall with the nest groove match at an end of check ring, is provided with and the corresponding projection of bolt indentation in the inboard of check ring one or both ends.

The utility model has the advantages that: rational in infrastructure, do not become flexible after nut is fastened on the bolt, do not come off, guaranteed the safety reliability of fastened object.

Four, description of drawings: Fig. 1 is the structural representation of bolt; Fig. 2 is the left view of Fig. 1; Fig. 3 is the structural representation of nut; Fig. 4 is that the A-A of Fig. 3 is to sectional view; Fig. 5 is the structural representation of a kind of form of check ring; Fig. 6 is the left view of Fig. 5; Fig. 7 is the structural representation of the another kind of form of check ring; Fig. 8 is the left view of Fig. 7.

Five, embodiment: with reference to accompanying drawing, the utility model comprises bolt 1, nut 3, check ring 6, it is characterized in that: longitudinally be provided with a groove 2 from the threaded end of bolt 1 along screw rod; The one side of nut 3 be provided with one with the nest groove 4 of the concentric bore of tapped hole greater than the tapped hole diameter, be provided with all jagged teeth 5 equably in the bottom of nest groove 4; The profile of check ring 6 is corresponding with the shape of nut nest groove 4, is shaped on the teeth 7 that the teeth 5 on the sidewall with the nest groove match at an end of check ring 6, is provided with and bolt indentation 2 corresponding protruding 8 in the inboard of check ring 6 one or both ends.

Working principle of the present utility model is: in use, check ring 6 places in the nut nest groove 4, its teeth 7 and teeth 5 interlock mutually, when nut 3 is enclosed within on the bolt 1, in the groove 2 of projection 8 inserting bolts 1 of check ring 6, check ring 6 can only be advanced along groove 2, can not rotate, nut 3 also can only can not retreat in precession, thereby has played effect locking, retaining.Usually, after nut 3 was fastened on the bolt 1, nut 3 can not be removed again; But when check ring 6 adopts thinner high-carbon steel wire manufacturing and is equipped with bolt indentation 2 corresponding protruding 8 the time (as Fig. 7, shown in Figure 8) in the inboard at its two ends, nut 3 can unload from bolt 1, must apply external force to nut 3 when unloading, twist check ring 6 broken, make it lose the retaining effect, nut 3 can be unloaded from bolt 1.

The utility model can be widely used in machinery such as vibrating sieve, transmission shaft, vehicle and steelframe, bridge, railway etc. must permanent fastening place.

In addition, nut of the present utility model, check ring also can be used for above the tubing products, as long as on the outer silk of pipe a groove is set, can play retaining, antitheft effect like this on pipe fitting.

Claims

1. a retaining permanent bolt assembly comprises bolt, nut, check ring, it is characterized in that: longitudinally be provided with a groove from the threaded end of bolt along screw rod; The one side of nut be provided with one with the nest groove of the concentric bore of tapped hole greater than the tapped hole diameter, be provided with all jagged teeth equably in the bottom of nest groove; The profile of check ring is corresponding with the shape of nut nest groove, is shaped on the teeth that the teeth on the sidewall with the nest groove match at an end of check ring, is provided with and the corresponding projection of bolt indentation in the inboard of check ring one or both ends.