CN2157958Y - Cylinder lock - Google Patents

Abstract

The utility model belongs to the field of lock, in particular to spring lock head. The utility model discloses it has the lower bullet groove bigger than last pellet shot from a slingshot sectional area to open on the lock core, is equipped with reset spring on the lock core pole, has a pair of theftproof pellet shot from a slingshot in the depths of lockhole, and it has a touch arm even to go up the theftproof pellet shot from a slingshot, and this touch arm constitutes anti-theft switch with another touch arm on the lock head body, and the lock core end has another contact on a contact and the lock head body, constitutes doorbell switch. The lock head has compact structure, two functions of anti-theft and doorbell are added under the condition of not changing the appearance of the lock head, and the lock head can be widely applied to the fields of household door locks and the like.

Description

Cylinder lock

The utility model belongs to the field of lock, particularly a kind of ball lock head.

Lock core in the prior art in the ball lock head all cannot move relative to tapered end, if increase the doorbell function for lock, generally all will set up a doorbell switch, so not only influence the outward appearance of lock, and lock head structure is not compact yet.

The utility model purpose just provides a kind of compact conformation, the tapered end motion relatively of tapered end attractive in appearance, its lock core, and doorbell and two antitheft switches are set in tapered end, realize a lock three usefulness, i.e. lock, antitheft, doorbell.

The utility model be achieved in that leave on the lock core than on the big following bullet groove of pellet shot from a slingshot sectional area, back-moving spring is housed on lock core pole, adorn a pair of anti-theft billiards in the lockhole depths, last anti-theft billiards is connected with a contact arm, another contact arm on this contact arm and the lock core body constitutes anti-theft switch, the lock core end has another contact on a contact and the tapered end to constitute a doorbell switch, one control lever is arranged between lock core and tapered end, one end of lever gos deep into the openend of lockhole, and the cannelure of a corresponding lever other end is arranged on the lock core.

Following bullet groove is bigger than last pellet shot from a slingshot sectional area, and external force just can make the relative tapered end of lock core move axially like this, and the distance that moves is looked down the size difference of bullet groove and last pellet shot from a slingshot and decided.After external force was cancelled, under the effect of back-moving spring, lock core set back again.Move with lock core just and can contact in the contact of lock core end, constitute a doorbell switch with another contact on the tapered end.The anti-theft billiards that is provided with in the depths of lockhole moves up under external force, makes its contact arm of ining succession contact the formation alarm switch with a contact arm on the tapered end.

Owing to be provided with doorbell in tapered end inside and two switches of reporting to the police, and utilize lock core as bell button, make the utility model, compact conformation is attractive in appearance, under the prerequisite of the outward appearance that does not change tapered end, realizes that a lock to use.

Further describe the utility model below in conjunction with drawings and Examples.

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

Back-moving spring 1, lock core 2, doorbell switch 3, anti-theft switch 4, following bullet groove 5, marble spring 6, last pellet shot from a slingshot 7, following pellet shot from a slingshot 8, control lever 9, arm spring 10, cannelure 11, tapered end 12, anti-theft billiards 13, lock core 14.

The doorbell switch 3 of tapered end can external doorbell circuit.Owing to bullet groove 5 is bigger than the sectional area of last pellet shot from a slingshot 7 down, when external force acts on lock core 2, lock core 2 relative tapered end 12 axial displacements, the contact of lock core end just contacts with contact on the tapered end 12, be the doorbell switch closure, the just conducting of external doorbell circuit has realized the doorbell function.After external force was cancelled, lock core 2 set back under the effect that is contained in the back-moving spring 1 on the lock core pole 14.

The anti-theft switch 4 of tapered end can external warning circuit.When original key inserts lockhole, depress an end of the control lever 9 that gos deep into lockhole, the other end of control lever 9 is raised up in the cannelure 11, and like this, lock core 2 just can not have been done axial displacement with respect to tapered end 12, and doorbell circuit is also not closed.Because control lever 9 rises in the cannelure 11, and original key can not contact with warning pellet shot from a slingshot 13, alarm switch is also not closed again.When other key such as picking lock or master key inserts, insert gos deep into the other end that lockhole inside is depressed the control lever again always, touch warning pellet shot from a slingshot 11, the contact arm that last warning pellet shot from a slingshot is ined succession contacts with the contact arm of tapered end, it is the alarm switch closure, external warning circuit conducting has realized warning function.

The switch contact that is equipped with on the member of tapered end all need be done the insulation protection.The utility model is equally applicable to the ball lock head of multiple row pellet shot from a slingshot.

Claims (2)

1, a kind of ball lock head, it is by lock core (2), tapered end (12), last pellet shot from a slingshot (7), following pellet shot from a slingshot (8), marble spring formations such as (6) is characterized in that:

On lock core (2), have than last pellet shot from a slingshot (7) sectional area and want big following bullet groove (5), back-moving spring (1) is housed on lock core pole (14), a pair of anti-theft billiards (13) is arranged in the depths of lockhole, last anti-theft billiards is connected with a contact arm, another contact arm on this contact arm and the lock core body (12) constitutes anti-theft switch (4), lock core (2) end has another contact on a contact and the tapered end (12), constitute doorbell switch (3), one control lever (9) is arranged between lock core and tapered end, one end of control lever (9) gos deep into the openend of lockhole, and the cannelure (11) of a corresponding lever bar other end is arranged on the lock core.

2, ball lock head as claimed in claim 1 is characterized in that tapered end has the pellet shot from a slingshot that is no less than row.