CN201339375Y

CN201339375Y - Bolt lock capable of preventing connecting rod from falling off

Info

Publication number: CN201339375Y
Application number: CNU2009200834313U
Authority: CN
Inventors: 严群方
Original assignee: 周仁
Priority date: 2009-01-15
Filing date: 2009-01-15
Publication date: 2009-11-04
Anticipated expiration: 2019-01-15

Abstract

The utility model relates to a bolt lock capable of preventing connecting rod from falling off, which is composed of a lock body, a lock core, a transmission plate and an anti-drilling block; wherein, the both ends of the transmission plate are respectively connected with an upper connecting rod and a lower connecting rod; the bolt lock is characterized in that a concave point is arranged on the exterior of the lock core contacted with the lock body; a slot hole is arranged on the lock body corresponding to the concave point; a spring and a roller ball are arranged in the slot hole; when the lock core drives the transmission plate to rotate in vertical state from horizontal state, the roller ball in the lock body falls into the concave point of the lock core. As the concave point and roller ball are arranged in the bolt lock, the roller ball falls into the concave point when the upper connecting rod and the lower connecting rod are respectively inserted into the upper and lower frames; the upper connecting rod and the lower connecting rod cannot have shift even if the fixed door leaf has vibration so that the bolts of the upper connecting rod and the lower connecting rod are prevented from falling off from the upper and lower door frames.

Description

Prevent the latch lock that connecting rod comes off

Technical field

The utility model belongs to a kind of lockset, particularly a kind of latch lock that connecting rod comes off that prevents that is applied to door leaf.

Background technology

Be used to have the location of the fixedly door leaf of two door leafs (clamshell doors or composite door) all to adopt the mode of upper and lower cotter joint lock to fix at present, the latch lock constitutes (Fig. 1) by lock body, lock core, driver plate and anti-drilling block, wherein the two ends of driver plate connect connecting rod and lower link (Fig. 2) respectively, and the end of connecting rod is provided with latch.Its operating principle is: the key shape thing is inserted lock core, and rotary locking cylinder, lock core drive driver plate revolves and turn 90 degrees, and makes driver plate be rotated into plumbness by level, the latch of connecting rod and lower link inserts in the lower door frame respectively in the control, thereby door leaf is fixed; The opposite operation of implementation of opening the door gets final product.The existing problem of this structure is: when fixedly vibrations take place door leaf, can make driver plate generation shift phenomenon, make driver plate can not keep plumbness completely, this moment is because the deadweight of last connecting rod, can make driver plate rotate, and cause the latch of connecting rod and lower link in last lower door frame, to come off, making fixedly, door leaf breaks away from the state of locking a door voluntarily.

Summary of the invention

The purpose of this utility model provides a kind of driver plate that can prevent the latch that prevents from the to come off lock of shift phenomenon takes place voluntarily, to overcome above-mentioned deficiency.

To achieve these goals, the utility model is made of lock body, lock core, driver plate and anti-drilling block, wherein the two ends of driver plate connect connecting rod and lower link respectively, be characterized in: the concave point of lock core outer setting that contacts with lock core at lock body, be provided with a slotted eye with the lock body of this concave point opposite position, be shelved with spring and ball in slotted eye, when lock core drive driver plate was rotated into plumbness by level, the ball in its lock body fell into the concave point on the lock core.

Because the utility model is provided with concave point and ball in lockset, make when last connecting rod and lower link insert in the lower door frame respectively, ball falls into concave point, even fixedly door leaf shakes, shift phenomenon can not take place in connecting rod and lower link yet on it, thereby the situation that the latch of having avoided last connecting rod and lower link comes off in the last lower door frame takes place.

Description of drawings

Fig. 1 is the structural representation of existing latch lock.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is a structural representation of the present utility model.

Among the figure: 1-lock core, 1.1-concave point, 2-lock body, 2.1-slotted eye, 3-driver plate, 4-anti-drilling block, the last connecting rod of 5-, 6-lower link, 7-spring, 8-ball.

The specific embodiment

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

The utility model is made of lock body 2, lock core 1, driver plate 3 and anti-drilling block 4, wherein the two ends of driver plate 3 connect connecting rod 5 and lower link 6 respectively, the concave point 1.1 of lock core outer setting that contacts with lock core 1 at lock body 2, be provided with a slotted eye 2.1 with the lock body 2 of these concave point 1.1 opposite positions, in slotted eye 2.1, be shelved with spring 7 and ball 8, when lock core 1 drove driver plate 3 and is rotated into plumbness by level, the balls 8 in its lock body 2 fell into the concave point 1.1 on the lock core 1.

Principle of the present utility model is: but when needing fixedly door leaf locking, the key shape thing is inserted lock core, and rotary locking cylinder, lock core drive driver plate revolves and turn 90 degrees, and makes driver plate be rotated into plumbness by level, and the latch of connecting rod and lower link inserts in the lower door frame respectively in the control, thereby make fixedly door leaf, extract key then, ball sticks in the concave point of lock core under spring action, prevents that upper and lower strut from causing upper and lower cotter joint to come off because of the vibrations of door body and deadweight descend.When unblanking, the key shape thing is inserted lock core, and rotary locking cylinder (its strength ratio is big slightly when locking a door), the lock core extruding ball of rotation, force length of spring compressed that ball is broken away from the concave point, lock core drive driver plate revolves and turn 90 degrees, and makes driver plate be rotated into level by plumbness, the latch of connecting rod and lower link breaks away from respectively in the lower door frame in the control, finishes the process of opening the door.

After the utility model was installed, only keyhole exposes edge sealing, and was very attractive in appearance; The utility model only need bore small-sized rectangular opening in the door-plate side and can realize installing, and opposite house body intensity effect is very little.

The content institute and this area professional and technical personnel's known prior art that are not described in detail in this manual.

Claims

1, a kind of latch lock that prevents that connecting rod from coming off, constitute by lock body, lock core, driver plate and anti-drilling block, wherein the two ends of driver plate connect connecting rod and lower link respectively, be characterized in: the concave point of lock core outer setting that contacts with lock core at lock body, be provided with a slotted eye with the lock body of this concave point opposite position, be shelved with spring and ball in slotted eye, when lock core drive driver plate was rotated into plumbness by level, the ball in its lock body fell into the concave point on the lock core.