CN2245106Y - Improved structure for theft-proof door - Google Patents

Abstract

The utility model discloses an improved structure for a theft-proof door, composed of a door leaf, a door frame, a door lock, a transmission mechanism installed in the door leaf and connected with a bolt, etc. A shifting block is welded on the lock tongue of the door lock and is inserted on a linkage sheet which is movably connected with two connecting rods. When a door is opened and locked, the shifting block drives the linkage sheet to move following the lock tongue and simultaneously drives the connecting rods to rotate so that the bolt is inserted in the door frame or retracted to the door leaf. When the utility model opens and locks the door, the utility model can accomplish through a motion, and the improved structure for theft-proof door has convenient use, simple structure and easy installation.

Description

The structure-improved of security door

The utility model relates to a kind of security door, and is especially relevant with its security door latch transmission mechanism.

Chinese patent ZL 94245088.4 disclosed security doors are by door leaf, doorframe, door lock and be installed on the connection handle of door leaf inside and rotating disk of latch, connecting rod, crank etc. are formed.At the inner bottom welding of the dead bolt of door lock one block that stretches out outside the lock box, establish a connecting rod block on the block opposite position therewith at connecting rod.

During use, the twisting handle, dial rotation makes connecting rod move up and down thus, drives latch by crank and stretches out door leaf, inserts doorframe, and this moment, the connecting rod block was descending.When locking a door, block moves horizontally to door leaf edge with dead bolt, and block blocks the connecting rod block, makes the connecting rod block can not be up, and promptly connecting rod can not move, thereby pins latch.When opening door lock, block moves to door leaf edge in the other direction with dead bolt, and the connecting rod block no longer is obstructed, the twisting handle, and link motion drives the latch retract door leaf, and door can be opened.This complex structure is installed trouble; No matter locking is still opened, and all needs secondary action, i.e. open and close lock and twisting handle use inconvenience.

The purpose of this utility model is to provide a kind of structure-improved of security door, and its member is few, installs easily, and is easy to use.

For achieving the above object, security door of the present utility model is by door leaf, doorframe, door lock and be installed in the inner transmission mechanism that connects latch of door leaf etc. and form.Door lock is a fitted outside, dead bolt bottom welding one pulling block, and shifting block is plugged on the double-action plate of transmission mechanism; Transmission mechanism is a linkage, comprises double-action plate and long and short connecting rod, and an end of double-action plate upper and lower end and upper and lower long connecting rod is connection; A rotating shaft is established in the appropriate position in the middle of two long connecting rods, and the long connecting rod other end is with short connecting rod one end and connects; Appropriate location is also established a rotating shaft in the middle of the short connecting rod, and the other end is with an end of latch and connects.When locking a door, shifting block moves horizontally to door leaf edge with dead bolt, by drivening rod mechanism, makes latch stretch out door leaf, inserts doorframe; When opening the door, shifting block moves to door leaf edge in the other direction with dead bolt, and logical moving linkage rotates, and makes the latch retract door leaf.

Since welding one shifting block on the security door dead bolt of the present utility model, and shifting block cooperates with the linkage that is connected latch, only needs once action during use, and promptly the open and close door lock just can open and close latch by linkage, uses easy to operate; Do not need members such as handle, rotating disk to cooperate again because of the utility model, make designs simplification, install easily.

The utility model is described in further detail below in conjunction with graphic and embodiment.

Fig. 1 is the utility model structural representation;

Fig. 2 is that the utility model security door A is to the rotational structure schematic diagram.

Consult shown in Fig. 1,2, the utility model security door is by door leaf 7, doorframe 8, door lock 9 and be installed in members such as the double-action plate 2 that connects latches 1 in the door leaf 7, long and short connecting rod 4,5 and form.Welding one shifting block 3 on the dead bolt of door lock 9, shifting block 3 is inserted on the double-action plate 2, and when opening and closing door lock 9, these pulling block 3 drive double-action plates 2 are done horizontal linear with dead bolt and are come and gone mobile.Upper and lower connecting rod 4 in the door leaf 7 is pivot pin with double-action plate 2 upper and lower ends respectively and connects, establish rotating shaft in the middle of the connecting rod 4, the other end of two long connecting rods 4 connects with two short connecting rods, 5 pivot pins respectively, also establish rotating shaft in the middle of the connecting rod 5, the other end of two short connecting rods 5 connects with two latches, 1 pivot pin respectively, and latch 1 is horizontal latch.

When locking a door, shifting block 3 moves to door leaf 9 edge directions with the dead bolt of door lock 9, and shifting block 3 drivening rods 4,5 rotate, and latch 1 is inserted in the doorframe 8 simultaneously; When opening the door, pulling block 3 moves to door leaf 9 edges in the other direction with the dead bolt of door lock 9, and drivening rod 4,5 rotates, and simultaneously, makes in the latch 1 withdrawal door leaf 9.

If when adopting the security door of outwards opening door leaf, also can also establish the latch identical in door leaf hinge edge direction with the door lock limit, promptly all connect latch is set at the short connecting rod two ends, two latches are done horizontal movement in the other direction simultaneously, promptly insert doorframe or withdrawal door leaf simultaneously, can prevent to destroy hinge, and open door leaf.

Claims (4)

1, a kind of structure-improved of security door, by door leaf (7), doorframe (8), door lock (9) and be installed in the transmission mechanism that connects latch (1) in the door leaf (7) etc. and form, it is characterized in that: welding one pulling block (3) on the dead bolt of door lock (9), shifting block (3) is plugged on the double-action plate (2) of transmission mechanism, and the transmission mechanism other end connects with latch (1).

2, the structure-improved of security door according to claim 1, it is characterized in that: transmission mechanism is a linkage, also comprise connecting rod (4), (5), connecting rod (4) one ends are with double-action plate (2) and connect, connecting rod (4) other end is with connecting rod (5) and connects, connecting rod (5) one ends connect with latch (1), and appropriate location is all established rotating shaft in the middle of connecting rod (4), (5).

3, the structure-improved of security door according to claim 1 is characterized in that: door lock (9) is the bolt-type pin tumbler lock.

4, according to claim 2,3 described security door structure-improveds, it is characterized in that: connecting rod (4) is upper and lower two, be with double-action plate (2) upper and lower end respectively and connect, upper and lower connecting rod (4) other end is with upper and lower connecting rod (5) and connects, two connecting rods (5) connect with latch (1), and the place all establishes rotating shaft in the middle of each connecting rod (4), (5).

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