CN2397234Y - Automatic door bolt - Google Patents

Abstract

The utility model provides an automatic door bolt which comprises a bolt case and a bolt post. The utility model is characterized in that the lower part of the interior of the bolt case is also connected with a multi-fork telescopic mechanism. A cam touching a driving rod is transversely arranged at the lower end of the multi-fork telescopic mechanism, and one part of the cam extends out of the bolt case. A compression spring is arranged on the bolt post between a bolt handle and the top surface of the bolt case. When the cam is pressed by external force to rotate into the bolt case, the bolt post can move upwards. The door bolt is used for realizing automatic bolt insertion and has the advantages of good theft-proof performance and convenient use. The utility model is fit for doors with double leaves.

Description

A kind of Automatic door bolt

The utility model relates to keeper, and the moving keeper of particularly a kind of door is fit to double door and uses.

As everyone knows, double door is all loaded onto keeper on the Yishanmen therein, in case others is easy to door is opened.In prior art, no matter be bright bolt or dark bolt, when closing the door or open the door all must with on the hand push or the hitching post of leaving behind can realize that often make troubles to the people, in case forget and go up bolt, double door is easy to be opened just as illusory.In addition, even gone up bolt, since also gapped between the double door, steal the thief and also be easy to keeper be colluded down with iron wire.Therefore, the theftproof of existing keeper is poor.

The purpose of this utility model is to provide place's theftproof performance good, easy to use Automatic door bolt.

Above-mentioned task realizes by this way: this Automatic door bolt includes the bolt shell, hitching post, it is characterized in that scissor type telescopic mechanism more than in addition, these many scissor type telescopic mechanisms are connected in the bolt shell by the jointed shaft and the bolt shell bottom shell wall of its lower end, its upper end is hinged with the through hole of hitching post lower end, a compression spring is housed on the bolt handle of hitching post and the hitching post between the bolt shell end face, laterally be provided with a cam that contacts with its drive rod in the bolt shell below many scissor type telescopic mechanisms, the open seam that another part of this cam passes bolt shell front extends outside the bolt shell, when cam rotated in the bolt shell, many scissor type telescopic mechanisms up stretched.

The utility model is work like this: the top or the bottom that during use Automatic door bolt are installed in the wherein Yishanmen mating face of double door, at closing time, earlier this door is shut and close other Yishanmen again, when touching the cam of Automatic door bolt lower end, other Yishanmen just begins to oppress cam, make it in the bolt shell, to rotate, the drive rod that promotes many scissor type telescopic mechanisms lower end stretches upwards many scissor type telescopic mechanisms, the jointed shaft of its upper end just promotes the through hole of hitching post lower end, hitching post is moved up insert in the hitching post hole of doorframe door is barred up.At this moment, because cam is pressed in the bolt shell by other Yishanmen, tightly push down the drive rod of scissor type telescopic mechanism, many scissor type telescopic mechanisms can not move down, that is hitching post can not move down, firmly door is barred up, no matter how the robber tries every possible means also to be difficult to hitching post is left behind, and has only after other Yishanmen is opened, releasing is to the constraint of cam, under the elastic force effect of compression spring, hitching post can move down return, and many scissor type telescopic mechanisms also shrink and move down, its drive rod changes cam outward toward the bolt shell, be returned to reset condition, this moment, hitching post was just received automatically to the bolt shell, and this fan door just can be opened.This shows that as long as two fan doors are shut, hitching post just is inserted in the hitching post hole of doorframe automatically.Advantages such as therefore, compared with the prior art the utility model has can go up bolt automatically, and theftproof is good and easy to use.

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

Fig. 1 is the longitudinal sectional view of a kind of concrete structure of the utility model.

Fig. 2 be among Fig. 1 A to partial view.

Fig. 3 is along the sectional view of B-B line among Fig. 1.

As shown in Figure 1, bolt shell 1 is a hollow cuboid, and many scissor type telescopic mechanisms 7 are connected in the bolt shell 1 with the jointed shaft 12 of its lower end and the shell wall of bolt shell 1 bottom, and its upper end is connected with the through hole 6 of hitching post 2 lower ends.Bolt 4 and bolt shell 1 between hitching post 2 on be equipped with one the compression spring 3.Cam 8 is horizontally set at bolt shell 1 bottom, and its shaft is placed in the bolt shell 1 and contact with the drive rod 9 of many scissor type telescopic mechanisms 7, and another part places bolt shell 1 (as shown in Figure 3) outward by the open seam 13 on bolt shell 1 wall.When external force pressure cam 8, cam 8 rotates in bolt shell 1, and promotion drive rod 9 moves, many scissor type telescopic mechanisms 7 are up stretched, when whole cam 8 went in the bolt shell 1, many scissor type telescopic mechanisms 7 extended to extreme position, made hitching post 2 up move to the extreme higher position.

Can take following measure in order to make the utility model obtain better result of use:

The through hole 6 of hitching post 2 lower ends is preferably slotted hole, bolt 4 and many scissor type telescopic mechanisms 7 on also be provided with a compression spring 5 on the hitching post 2 between the jointed shaft 14, design can make like this a buffering when moving on the hitching post 2, in case hitching post 2 is still during the keyhole of misalignment doorframe, many scissor type telescopic mechanisms 7 up stretch can oppress compression spring 5 earlier, and is unlikely to be withstood.In addition, when the keyhole inner product had dust or small difference thing, the degree of depth that can make hitching post 2 stretch into keyhole was made adjustment automatically.

At bolt the top of chute 10 is preferably laterally had a bayonet socket 11 (as shown in Figure 2), as long as people with portable bolt 4 to bolt past again bayonet socket 11 rotations during chute 10 tops, bolt is blocked 4 by bayonet socket 11 and just can realize manually going up bolt, and needn't go up bolt automatically, is convenient for people to use.

The utility model is fit to double door to be adopted.

Claims (3)

1, a kind of Automatic door bolt, include bolt shell (1), hitching post (2), it is characterized in that scissor type telescopic mechanism more than (7) in addition, these many scissor type telescopic mechanisms (7) are connected in the bolt shell (1) with bolt shell (1) bottom shell wall by the jointed shaft (12) of its lower end, its upper end is hinged with the through hole (6) of hitching post (2) lower end, be equipped with one at the bolt of hitching post (2) on the hitching post (2) between (4) and bolt shell (1) end face and compress spring (3), in the bolt shell (1) of many scissor type telescopic mechanisms (7) below, laterally be provided with a cam (8) that contacts with its drive rod (9), another part of this cam (8) passes the positive open seam (13) of bolt shell (1) and extends outside the bolt shell (1), when rotating in the past bolt shell (1) of cam (8), many scissor type telescopic mechanisms (7) up stretch.

2, Automatic door bolt according to claim 1, the through hole (6) that it is characterized in that hitching post (2) lower end is a slotted hole, also is provided with a compression spring (5) on the hitching post (2) between the last jointed shaft (14) of bolt handle (4) and many scissor type telescopic mechanisms (7).

3, Automatic door bolt according to claim 1 is characterized in that at bolt the top cross of chute (10) being had a bayonet socket (11).

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