CN2690520Y - Three dimension lock with arc key - Google Patents

Abstract

The utility model relates to a three dimension lock with an arc key, comprising a lock core sleeve, a lock core, a spring, an upper pin tumbler and a lower pin tumbler. The middle part of the lock core is provided with a circular arc shaped keyhole, and the lock core sleeve and the lock core are provided with three sets of through holes which can be leaded into the circular arc shaped keyhole of the lock core. The three sets of through holes are intermediately and left and right centripetally and symmetrically distributed, the included angles of left through hole and the right through hole are respectively respective with the medium through hole are not larger than 45 DEG, and each set of through hole is axially provided with a plurality of through holes. Each through hole is respectively provided with a spring, an upper pin tumbler and a lower pin tumbler from inner part to outer part. The section of the circular arc key is a circular arc shape, which is matched with the circular arc shaped keyhole, and the convex arc surface is provided with concave stations which are corresponding to the medium and lower pin tumblers. Owing to adopting the circular arc key, the control number of the pin tumbler is increased, and the security of the lock is increased. The utility model changes the shape of keys and strengthen the key strength, and the keys are convenient to plug and pull with simple structure and reliable security.

Description

The three-dimensional lock that has the circular arc key

Technical field:

The utility model relates to a kind of mechanical door lock, particularly relates to a kind of three-dimensional door lock that has the circular arc key.

Background technology:

The keyhole of mechanical door lock lock core is generally rectangle or cross in the prior art, pairing key also is sheet or crosswise, by the locked groove in the keyhole key is positioned, the variation by sawtooth on the key fin and the pellet shot from a slingshot in the lock core reaches antitheft purpose.Though this structure key duplicates conveniently, anti-theft capability is not strong, and safety is relatively poor.

Summary of the invention:

The purpose of this utility model provides a kind of three-dimensional lock that has the circular arc key, to remedy the deficiencies in the prior art.

The utility model is realized as follows: a kind of three-dimensional lock that has the circular arc key, it includes lock core cover, lock core, spring, last pellet shot from a slingshot, following pellet shot from a slingshot, described lock core middle part is provided with the circular arc keyhole, described lock core cover and lock core are provided with 3 groups of through holes that lead in the lock core circular arc keyhole, described 3 groups of through holes are middle and left and right and entad are symmetrically distributed, and every group of through hole is provided with several through holes vertically; In each through hole ecto-entad be respectively equipped with spring, on pellet shot from a slingshot and following pellet shot from a slingshot; The cross section of described circular arc key is a circular arc, and matches with the circular arc keyhole, on its convex arc surface, be provided with through hole in the following corresponding concave station of pellet shot from a slingshot; In the middle of described 3 groups of through holes are and the left and right left side through hole that entad is symmetrically distributed and the right through hole be not more than 45 with the angle of intermediate throughholes respectively and spend.

The advantage of the three-dimensional lock that has the circular arc key that the utility model provides is, owing to adopted the circular arc key, has increased controlling the size of pellet shot from a slingshot, improve the safety of lock, changed the shape of key, strengthened key intensity, the key plug is convenient, simple in structure, safe and reliable.

Description of drawings:

Fig. 1 is a front of the present utility model sectional structure schematic diagram.

Fig. 2 is a side of the present utility model sectional structure schematic diagram.

Fig. 3 is the utility model circular arc key profile schematic diagram.

Fig. 4 is the A-A portion view of Fig. 3.

Fig. 5 is the three-dimensional outline drawing of the utility model circular arc key.

Among the figure, pellet shot from a slingshot, 4 lock core covers, 5 springs, 6 lock pearls, 7 lock cores, 8 circular arc keyholes, 9 circular arc keys, 10 concave stations on the 1 lock hole of bead, the 2 times pellets shot from a slingshot, 3.

Below in conjunction with accompanying drawing the utility model is described further.

The specific embodiment:

As shown in the figure, the utility model is a kind of embodiment that has the three-dimensional lock of circular arc key, and present embodiment has the function of fitting up key.It includes lock core cover 4, lock core 7, spring 5, last pellet shot from a slingshot 3, following pellet shot from a slingshot 2, described lock core 7 middle parts are provided with circular arc keyhole 8, described lock core cover 4 and lock core 7 are provided with 3 groups of through holes that lead in the lock core 7 circular arc keyholes 8, described 3 groups of through holes are middle and left and right and entad are symmetrical arranged, and every group of through hole is provided with several through holes vertically; In each through hole ecto-entad be respectively equipped with spring 5, on pellet shot from a slingshot 3 and following pellet shot from a slingshot 2; The cross section of described circular arc key 9 is a circular arc, and matches with circular arc keyhole 8, on its convex arc surface, be provided with through hole in the following corresponding concave station 10 of pellet shot from a slingshot; In the middle of described 3 groups of through holes are and the left and right left side through hole that entad is symmetrically distributed and the right through hole be not more than 45 with the angle of intermediate throughholes respectively and spend.

In last through hole that described centre is a group, pellet shot from a slingshot 3 and 2 of following pellets shot from a slingshot are provided with lock pearl 6 on it, and 180 degree direction correspondence positions at its lock core 7 are provided with the lock hole of bead 1, after the finishing key uses up, insert owner's key, rotational lock core, the lock pearl rests in the lock core cover 7, when rotation 180 is spent, lock pearl 6 enters in the lock hole of bead 1, has changed the last pellet shot from a slingshot 3 of lock and the position that is provided with that following pellet shot from a slingshot 2 is fitted up keys, and the finishing key then can not re-use.

Claims (2)

1. a three-dimensional that has the circular arc key is locked, it includes lock core cover, lock core, spring, last pellet shot from a slingshot, following pellet shot from a slingshot, it is characterized in that: described lock core middle part is provided with the circular arc keyhole, described lock core cover and lock core are provided with 3 groups of through holes that lead in the lock core circular arc keyhole, described 3 groups of through holes are middle and left and right and entad are symmetrically distributed, and every group of through hole is provided with several through holes vertically; In each through hole ecto-entad be respectively equipped with spring, on pellet shot from a slingshot and following pellet shot from a slingshot; The cross section of described circular arc key is a circular arc, and matches with the circular arc keyhole, on its convex arc surface, be provided with through hole in the following corresponding concave station of pellet shot from a slingshot.

2. the three-dimensional lock that has a circular arc key according to claim 1 is characterized in that: in the middle of described 3 groups of through holes are and the left and right left side through hole that entad is symmetrically distributed and the right through hole be not more than 45 with the angle of intermediate throughholes respectively and spend.

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