CN2423355Y

CN2423355Y - One-way rotary turning device in electric lock

Info

Publication number: CN2423355Y
Application number: CN 00235415
Authority: CN
Inventors: 邢刚
Original assignee: Individual
Current assignee: Xing Gang
Priority date: 2000-05-29
Filing date: 2000-05-29
Publication date: 2001-03-14
Anticipated expiration: 2010-05-29

Abstract

The utility model provides a hardware component, particularly a one-way rotary moving device in an electric lock, which is arranged on a safe or a security door. The utility model comprises a motor, an eccentric wheel, a motor shaft, an eccentric shaft, a lock bolt base plate, a guide post, an opening pin, a lock bolt, and a lock box plate. The utility model has the great characteristic that double-direction movement of the lock bolt can be realized only by one-way rotation of a driving motor in an electric lock forever, when larger pressure is given to the lock bolt by a side face, the lock bolt can not be butted back to an opening state. Therefore, a theftproof piece is much safe, and the utility model can be widely used in safes or security doors.

Description

Unidirectional rotary motion device in the electric lock

This practicality relates to a kind of five metals parts, the unidirectional rotary motion device in especially a kind of electric lock that is contained on strongbox or the security door.

At present, be contained in the electric lock on strongbox or the security door, nothing more than being that rack-and-pinion is paid transmission or the leading screw nut is paid transmission.These two kinds of kinds of drive when motor during to the rotation of a certain direction, or by the gear driven tooth bar, drive dead bolt again; Or driving nut by leading screw drives dead bolt again, and dead bolt is moved to a certain direction.Wanting to allow the dead bolt counter motion, just necessarily require the motor reverse rotation, promptly must be reversible electric machine, and this is difficult to accomplish concerning alternating current generator.Simultaneously, motor-drive circuit also must can be exported forward and reverse electric current, and this all brings certain difficulty not only for drive circuit, Circuit Design manufacturing, and, more than two kinds of transmissions pay processing and fabricating also complicated difficulty, cost is higher.At last, also has a hidden danger for Safe lock: if beat a hole from the case side, directly the dead bolt to blocking applies bigger pressure, then because this power forms torque to motor shaft, to make motor be forced to rotate, thereby can make dead bolt be pushed up back opening, promptly chamber door can be opened by improper, and this is a danger close.

The purpose of this utility model provides the unidirectional rotary motion device in a kind of electric lock, make drive motors only need unidirectional rotation forever, can realize the bidirectional-movement of dead bolt equally, and when the side applies bigger pressure to dead bolt, can not make dead bolt be pushed up back opening, thereby antitheft device is safer and convenient processing.

The purpose of this utility model is achieved in that on the axle of motor adorns an eccentric wheel, and eccentric shaft is housed on it, and this shaft extension is advanced in the eccentric slotted hole on the dead bolt substrate.Dead bolt is contained on the dead bolt substrate, and is vertical with slotted hole.When motor rotated, eccentric wheel slided in this slotted hole, rotatablely moving of motor had promptly been become the linear slide of dead bolt.

Obviously, when the motor one-directional rotation, eccentric wheel reciprocatingly slides in this slotted hole, promptly the unidirectional rotary motion of motor has been become reciprocatingly sliding of dead bolt.This transmission device processing is simple, cost is lower.When dead bolt is moving to side-play amount when maximum, promptly when latched position, the normal of eccentric shaft and slotted hole contact point must be by the axle center of motor shaft, therefore, on dead bolt, apply lateral force when at this moment, when attempt allows the dead bolt withdrawal, this power is just passed through electrical axis, do not form torque, thereby motor can not rotate, also be that dead bolt can not be pushed back.

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the front view of first embodiment of the utility model, and Fig. 2 is its top view, and Fig. 3 is dead bolt each component locations and force diagram when lock-out state.

Among the figure: (1) is that motor (2) is guiding slotted hole for dead bolt hole (11) for eccentric slotted hole (12) for lock box plate (10) for dead bolt (9) for lead (7) cottor pin (8) for dead bolt substrate (6) for eccentric shaft (5) for motor shaft (4) for eccentric wheel (3)

Motor (1) adopts the low-rotate speed motor.Remaining part all is made of a steel.Motor (1) and lead (6) are fixed on the lock box plate (9).Eccentric wheel (2) is vertically fixed on the motor shaft (3).Eccentric shaft (4) is vertically fixed on the eccentric wheel (2).Have eccentric slotted hole (11) and guiding slotted hole (12) on the dead bolt substrate (5), the major axis in this two hole is orthogonal, and its length must be greater than the twice of eccentric shaft (4) radius and eccentric throw sum.(8) one of dead bolts are fixed on the last other end of dead bolt substrate (5) and pierce in the last corresponding dead bolt hole (10) of lock box plate (9).Drop out for making dead bolt substrate (5) can slide and be unlikely to, burrow at the head of lead (6) cottor pin (7) is housed.

In Fig. 1 Fig. 2, when motor shaft (3) rotated by a certain direction, eccentric shaft (4) was to eccentric slotted hole (11) generation lateral force to the left or to the right.Because lead of fixing on the lock box plate (6) and dead bolt hole (10) make dead bolt substrate (5) can only do the reciprocating motion of left-hand or dextrad together with dead bolt (8) to the guide and limit effect of guiding slotted hole (12) and dead bolt (8).Be that the direction of motion can only be perpendicular to dead bolt hole (10).And dead bolt hole (10) is parallel with eccentric slotted hole (11) major axis.

In Fig. 3, dead bolt (8) when overhanging maximum is latched position, eccentric shaft (4) amount of moving to right maximum, it and eccentric slotted hole (11) edge intersect at the D point.Cross the D point and make the vertical line CD of eccentric slotted hole (11).Obviously, the CD line must be crossed motor shaft (3).The external force F that pushes back dead bolt (8) when making a stab does the time spent, and this power affacts power on the eccentric shaft (4) by eccentric slotted eye (11), can only be the direction of normal CD, also promptly must cross motor shaft (2).At this moment do not have the arm of force, do not become moment, motor just can not be forced to rotate.

Claims

1, the unidirectional rotary motion device in a kind of electric lock, it comprises motor (1), eccentric wheel (2), motor shaft (3), eccentric shaft (4), dead bolt substrate (5), lead (6), cottor pin (7), dead bolt (8), lock box plate (9), it is characterized in that:

A: motor shaft (3) is gone up dress eccentric wheel (2), and eccentric shaft (4) is arranged on the eccentric wheel (2);

B: eccentric slotted hole (11) is arranged on the dead bolt substrate (5), guiding slotted hole (12), eccentric shaft (4) stretches into eccentric slotted hole (11);

C: dead bolt (8) is contained on the dead bolt substrate (5), and vertical with eccentric slotted hole (11);

D: guiding slotted hole (12) and eccentric slotted hole (11) major axis are vertical mutually, and its length is greater than the twice of eccentric shaft (4) radius and eccentric throw sum.