CN203516398U

CN203516398U - Self-locking bolt

Info

Publication number: CN203516398U
Application number: CN201320666666.1U
Authority: CN
Inventors: 张纯来
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-28
Filing date: 2013-10-28
Publication date: 2014-04-02
Anticipated expiration: 2023-10-28

Abstract

The utility model discloses a self-locking bolt comprising a screw stem, a nut and metal gaskets. The metal gaskets include an upper gasket and a lower gasket. A first fastening tooth belt is distributed on the lower end face of a cap of the screw stem, a second fastening tooth belt matched with the first fastening tooth belt is arranged on the upper end face of the upper gasket, a third fastening tooth belt is arranged on the lower end face of the upper gasket, a fourth fastening tooth belt is arranged on the upper end face of the lower gasket, a fifth fastening tooth belt is arranged on the lower end face of the lower gasket, a sixth fastening tooth belt matched with the fifth fastening tooth belt is arranged on the upper end face of the nut, and each of fastening teeth of the first fastening tooth belt, the second fastening tooth belt, the third fastening tooth belt, the fourth fastening tooth belt, the fifth tooted belt and the sixth fastening tooth belt comprises a bevel and a fastening face. Due to action of matching between the nut and the upper gasket and the matching between the screw stem and the lower gasket, the screw stem and the nut cannot be turned easily individually, and then loosening in clamping an object by the nut can be avoided and self locking can be achieved.

Description

Self-locking screw

Technical field

The present invention relates to a kind of self-locking screw.

Background technique

Conventional bolt comprises nut and screw rod, and during use, screw rod is through mounting hole, by nut screwing clamping on screw rod, but in the process of using, object unavoidably has collision, rock etc., now bolt is easy to unclamp, and causes connecting insecure.

Summary of the invention

The above deficiency of marching in order to overcome existing skin, the invention provides and a kind ofly can prevent that nut from unclamping the fastening self-locking screw to object.

The technical solution adopted for the present invention to solve the technical problems is: self-locking screw, comprise screw rod, nut and metallic shim, described metallic shim comprises Upper gasket and lower levelling plate, the cap lower end surface of described screw rod is distributed with the first latch band, the upper-end surface of described Upper gasket is with the second latch band mating with the first latch band, the lower end surface of described Upper gasket is with the 3rd latch band, the upper-end surface of described lower levelling plate is with the 4th latch band, the lower end surface of described lower levelling plate is with the 5th latch band, the upper-end surface of described nut is with the 6th latch band mating with the 5th latch band, described the first latch band, the second latch band, the 3rd latch band, the 4th latch band, latch on the 5th latch band and the 6th latch band includes inclined-plane and locking surface.

The invention has the beneficial effects as follows, by Upper gasket and lower levelling plate, caught object is clamped, and Upper gasket and lower levelling plate mesh with the first latch band of nut and the second latch band on nut respectively, thereby make Upper gasket the 3rd latch band of grip objects and lower levelling plate the 4th latch band can embed object, and nut and Upper gasket coordinate and screw rod all cannot rotate separately easily with making screw rod and nut coordinating of lower levelling plate, thereby can avoid nut to unclamp the clamping to object, realize self-locking.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the present invention is further described.

Fig. 1 is the assembled state structural representation of self-locking screw provided by the invention.

Fig. 2 is the structural plan schematic diagram of the Upper gasket in Fig. 1.

Fig. 3 is the schematic side view of Fig. 1.

Fig. 4 is that nut band in Fig. 1 is with the structural plan schematic diagram of one end of the 6th latch band.

Embodiment

As Fig. 1, Fig. 2, Fig. 3, shown in Fig. 4, self-locking screw provided by the invention, comprise screw rod 1, nut 2 and metallic shim, described metallic shim comprises Upper gasket 3 and lower levelling plate 4, cap 5 lower end surfaces of described screw rod 1 are distributed with the first latch band 6, the upper-end surface of described Upper gasket 3 is with the second latch band 7 mating with the first latch band 6, the lower end surface of described Upper gasket 3 is with the 3rd latch band 8, the upper-end surface of described lower levelling plate 4 is with the 4th latch band 9, the lower end surface of described lower levelling plate 4 is with the 5th latch band 10, the upper-end surface of described nut 2 is with the 6th latch band 11 mating with the 5th latch band 10, described the first latch band 6, the second latch band 7, the 3rd latch band 8, the 4th latch band 9, latch on the 5th latch band 10 and the 6th latch band 11 includes inclined-plane 12 and locking surface 13.

As shown in Figure 1, Figure 2, Figure 3 shows, on the basis of above-described embodiment, the 3rd latch 8 bands of described Upper gasket 3 are towards the opposite with the locking surface 13 of the latch of the 4th latch band 9 of lower levelling plate 4, described the second latch band 7 with the locking surface of the latch of the 3rd latch band 8 towards identical, described the 4th latch band 9 with the locking surface of the latch of the 5th latch band 10 towards identical.Sense of rotation when described nut 2 is upwards tightened with the locking surface of the 6th latch band 11 of nut 2 towards identical.The set-up mode of above-mentioned latch band is conducive to carry out self-locking.

As shown in Figure 1, Figure 2, shown in, outside the sidewall of the outwardly cap 5 in nut 2 and screw rod 1 in edge 14 of described Upper gasket 3 and lower levelling plate 4, on the edge 14 of described protrusion, offer equally distributed a plurality of rectangle groove 15, cap 5 and nut 2 all have a plurality of screens planes 16, rectangle groove 15 on described Upper gasket 3 and lower levelling plate 4 is corresponding one by one with screens plane 16, the diapire 17 of described rectangle groove 15 rectangle groove 15 during with screens plane 16 aligned position with screens plane 16 in same plane or be parallel to each other.Adopt special tool can snap in rectangle groove 15, and then pull Upper gasket 3 and lower levelling plate 4, while turning on nut 2 due to needs, lower levelling plate 4 and nut 2 must be backed out to just rotatable (while rotating separately, can be stuck) simultaneously, thereby also can prevent that other people from turning on nut 2 under abnormal condition.

Claims

1. a self-locking screw, comprise screw rod, nut and metallic shim, it is characterized in that: described metallic shim comprises Upper gasket and lower levelling plate, the cap lower end surface of described screw rod is distributed with the first latch band, the upper-end surface of described Upper gasket is with the second latch band mating with the first latch band, the lower end surface of described Upper gasket is with the 3rd latch band, the upper-end surface of described lower levelling plate is with the 4th latch band, the lower end surface of described lower levelling plate is with the 5th latch band, the upper-end surface of described nut is with the 6th latch band mating with the 5th latch band, described the first latch band, the second latch band, the 3rd latch band, the 4th latch band, latch on the 5th latch band and the 6th latch band includes inclined-plane and locking surface.

2. self-locking screw according to claim 1, it is characterized in that: the locking surface of the latch of the 3rd latch band of described Upper gasket and the 4th latch band of lower levelling plate towards the opposite, described the second latch band with the locking surface of the latch of the 3rd latch band towards identical, described the 4th latch band with the locking surface of the latch of the 5th latch band towards identical.

3. self-locking screw according to claim 1 and 2, is characterized in that: sense of rotation when described nut is upwards tightened with the locking surface of the 6th latch band of nut towards identical.

4. self-locking screw according to claim 1 and 2, is characterized in that: the edge of described Upper gasket and lower levelling plate is outwardly outside the sidewall of nut and screw rod cap, offers equally distributed a plurality of rectangle groove on the edge of described protrusion.

5. self-locking screw according to claim 3, is characterized in that: the edge of described Upper gasket and lower levelling plate is outwardly outside the sidewall of nut and screw rod cap, offers equally distributed a plurality of rectangle groove on the edge of described protrusion.

6. self-locking screw according to claim 4, it is characterized in that: described cap and nut all have a plurality of screens planes, rectangle groove on described Upper gasket and lower levelling plate is corresponding one by one with screens plane, and when described rectangle groove and screens planar alignment position, the diapire of rectangle groove and screens plane are in same plane or be parallel to each other.

7. self-locking screw according to claim 5, it is characterized in that: described cap and nut all have a plurality of screens planes, rectangle groove on described Upper gasket and lower levelling plate is corresponding one by one with screens plane, and when described rectangle groove and screens planar alignment position, the diapire of rectangle groove and screens plane are in same plane or be parallel to each other.