CN205639248U - Anti vibration is from jack panel - Google Patents

Abstract

The utility model provides an anti-vibration self-tightening nut, which comprises an upper self-tightening nut, a lower self-tightening nut and an anti-vibration spring gasket placed between the two. head, the upper end surface of the lower self-tightening nut is provided with a slanted boss with claws, the anti-vibration spring gasket is clamped with the sloping boss, and the upper self-tightening nut is threadedly connected with the lower self-tightening nut. The countersunk head and the inclined boss form a wedge surface extrusion fit, and the upper self-tightening nut and the lower self-tightening nut are locked to give a pre-tightening force to the anti-vibration spring gasket. By using the upper self-tightening head with a certain countersunk head angle Tightening nut, the inclination angle of the boss is slightly larger than that of the matching lower threaded countersunk nut, and the anti-vibration spring washer connected in the upper and lower self-tightening nuts, so that the fixed connection of the nut has super strong anti-corrosion Vibration ability and anti-loosening ability, easy to manufacture, easy to install, economical and easy to use.

Description

An anti-vibration self-tightening nut

technical field

The utility model relates to a nut, in particular to an anti-vibration self-tightening nut.

Background technique

Nuts are parts that are screwed together with bolts or screws for fastening, and are widely used in manufacturing. Ordinary nuts are subjected to external force factors during use, such as vibration, impact, variable load, etc., and the connection between nuts and bolts is prone to loosening or even falling off. The looseness of the nut will lead to the reduction or even loss of the strength of the connection or fastening, which will lead to unpredictable consequences and even lead to safety accidents. Currently used or disclosed anti-vibration self-tightening nuts have unsatisfactory anti-loosening safety and reliability, some have complex structures and cumbersome manufacturing processes, and some have high prices.

Utility model content

In order to overcome the above technical deficiencies, the utility model provides an anti-vibration self-tightening nut.

The utility model provides an anti-vibration self-tightening nut, which includes an upper self-tightening nut, a lower self-tightening nut and an anti-vibration spring gasket placed between them. head, the upper end surface of the lower self-tightening nut is provided with a slanted boss with claws, the anti-vibration spring gasket is clamped with the sloping boss, and the upper self-tightening nut is threadedly connected with the lower self-tightening nut. The countersunk head and the inclined-plane boss form a wedge surface extrusion fit, and the upper self-tightening nut and the lower self-tightening nut are locked to give a pre-tightening force to the anti-vibration spring gasket.

The inclined-plane boss is a six-claw inclined-plane boss, and the inner side of the anti-vibration spring gasket is provided with a six-claw structure matching the six-claw inclined-plane boss.

The slope angle formed between the slope of the slope boss and the horizontal plane is greater than the angle of the countersunk head of the upper self-tightening nut matched with it.

On the lower end surface of the upper self-tightening nut, grooves are evenly distributed in the circumferential direction.

The lower end surface of the upper self-tightening nut forms a limit fit with the notch of the anti-vibration spring washer.

The thread direction of the upper self-tightening nut is opposite to that of the lower self-tightening nut.

The beneficial effect of the utility model is: by using the self-tightening nut on the countersunk head with a certain angle of the countersunk head, the inclination angle of the boss is slightly larger than that of the lower threaded self-tightening nut on the countersunk head angle matched with it, and the upper and lower self-tightening nuts are connected The anti-vibration spring washer in the nut makes the fixed connection of the nut have super strong anti-vibration ability and anti-loosening ability, which is convenient to manufacture, easy to install, economical and convenient to use.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is a structural sectional view of the utility model.

Fig. 3 is a bottom view of the upper self-tightening nut of the present invention.

Fig. 4 is a sectional view of the upper self-tightening nut of the present invention.

Fig. 5 is a plan view of the upper end of the lower self-tightening nut of the present invention.

Fig. 6 is a sectional view of the lower self-tightening nut of the present invention.

Fig. 7 is a front view of the anti-vibration spring washer of the present invention.

Fig. 8 is a top view of the anti-vibration spring washer of the present invention.

In the figure, 1 anti-vibration spring washer, 2 upper self-tightening nut, 3 lower self-tightening nut, 4 groove, 5 countersunk head, 6 left-handed thread, 7 right-handed thread, 8 six-claw beveled boss, 9 six-claw structure , 10 notches.

detailed description

Below in conjunction with accompanying drawing, the utility model embodiment is further described:

As shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7 and Fig. 8, the utility model discloses an anti-vibration self-tightening nut which comprises an upper self-tightening nut 2, a lower self-tightening nut The nut 3 and the anti-vibration spring gasket 1 placed between the two, the thread direction of the upper self-tightening nut is opposite to that of the lower self-tightening nut, that is, the thread of the upper self-tightening nut 2 is a left-handed thread 6, then The thread of the lower self-tightening nut is a right-handed thread 7, and the directions of the two are just opposite. The bottom end of the thread of the upper self-tightening nut 2 is provided with a countersunk head 5, and the countersunk head 5 has a certain countersunk angle. The upper end surface of the self-tightening nut 3 is provided with a beveled boss with claws, and the beveled boss is a six-claw beveled boss 8, and the inner side of the anti-vibration spring washer 1 is provided with a six-claw beveled boss that is compatible with the six-claw beveled boss. Six-claw structure 9, the anti-vibration spring gasket 1 is clamped with the inclined-plane boss, the upper self-tightening nut 2 is threaded with the lower self-tightening nut 3, and the countersunk head and the inclined-plane boss form a wedge surface extrusion Cooperate, the inclination angle formed between the slope of the inclined-plane boss and the horizontal plane is greater than the angle of the countersunk head of the upper self-tightening nut matched with it, so that the upper self-tightening nut can provide a pre-tightening force for the lower self-tightening nut. The upper self-tightening nut 2 and the lower self-tightening nut 3 are locked to give a pre-tightening force to the anti-vibration spring washer 1 .

That is, after the anti-vibration spring gasket with six-claw structure is put into the six-claw inclined-plane boss of the lower self-tightening nut, the upper self-tightening nut is tightened. The spring washer is also added with pre-tightening force, so as to realize the function of anti-vibration and anti-loosening, so that the fixed connection of the nut has super anti-vibration ability and anti-loosening ability, which is convenient to manufacture, easy to install, economical and convenient to use.

The lower end surface of the upper self-tightening nut is provided with circumferentially evenly distributed grooves 4, and the lower end surface of the upper self-tightening nut forms a limit fit with the gap 10 of the anti-vibration spring washer, increasing the contact with the anti-vibration spring washer After the self-tightening nut is tightened, it can prevent the anti-vibration spring gasket from rotating and lock it directly.

When installing the anti-vibration self-tightening nut, first install the lower self-tightening nut 3, then put in the anti-vibration spring washer 1, give a pre-tightening force to the lower self-tightening nut 3, then directly install the upper self-tightening nut 2, and directly tighten Just die, because there is an anti-vibration spring washer 1 between the lower self-tightening nut 3 and the upper self-tightening nut 2, the whole system will have a certain vibration resistance. When the six-claw structure 9 of the anti-vibration spring washer is installed correctly, the two will lock the anti-vibration spring washer 1 with the lower self-tightening nut 3, and the groove 4 on the lower end surface of the upper self-tightening nut is in line with the anti-vibration The gap 10 of the spring washer is relatively locked, and the six-claw inclined-plane boss 8 of the lower self-tightening nut is screwed to the upper self-tightening nut 2. Due to the downward pressure of the countersunk head 5 of the upper self-tightening nut, the lower self-tightening nut 3's self-tightening ability is strengthened.

The embodiments should not be regarded as limiting the utility model, and any improvement based on the spirit of the utility model should be within the protection scope of the utility model.

Claims (6)

1. An anti-vibration self-tightening nut, characterized in that: it includes an upper self-tightening nut (2), a lower self-tightening nut (3) and an anti-vibration spring washer (1) placed between them, the The threaded bottom end of the upper self-tightening nut (2) is provided with a countersunk head (5), the upper end surface of the lower self-tightening nut (3) is provided with a beveled boss with claws, and the anti-vibration spring washer (1) The upper self-tightening nut (2) is threadedly connected with the lower self-tightening nut (3), the countersunk head and the inclined-plane boss form a wedge surface extrusion fit, and the upper self-tightening nut ( 2) Lock the lower self-tightening nut (3) to give a pre-tightening force to the anti-vibration spring washer (1). 2. The anti-vibration self-tightening nut according to claim 1, characterized in that, the beveled boss is a six-claw beveled boss (8), and the inner side of the anti-vibration spring washer (1) is provided with a six-claw The six-claw structure (9) that is compatible with the beveled boss. 3. The anti-vibration self-tightening nut according to claim 1, characterized in that, the inclination angle formed between the inclined surface of the inclined-plane boss and the horizontal plane is greater than the angle of the countersunk head of the upper self-tightening nut matched therewith. 4. The anti-vibration self-tightening nut according to claim 1, characterized in that, the lower end surface of the upper self-tightening nut is provided with circumferentially evenly distributed grooves (4). 5 . The anti-vibration self-tightening nut according to claim 4 , characterized in that, the lower end surface of the upper self-tightening nut forms a limited fit with the notch ( 10 ) of the anti-vibration spring washer. 6. The anti-vibration self-tightening nut according to claim 1, characterized in that, the thread direction of the upper self-tightening nut is opposite to that of the lower self-tightening nut.