CN2373522Y

CN2373522Y - Reversal double-plunger-latch safety lock

Info

Publication number: CN2373522Y
Application number: CN 99223036
Authority: CN
Inventors: 王立伟
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-03-11
Filing date: 1999-03-11
Publication date: 2000-04-12
Anticipated expiration: 2009-03-11

Abstract

The utility model relates to a reverse double-latch safety lock comprising a sliding lock latch, four pulley wheels, a safety latch, two tension springs and a latch key. The sliding lock latch is provided with a longitudinal slide way provided with an opening; the safety latch is provided with a key way, and forms sliding fit with the longitudinal slide way through the pulley wheels fixed on the front end. One end of each tension spring is respectively connected with two support arms of the safety latch, and the other end is fixed on a lock body. The v is arranged in a latch key chamber on the lock body, and is supported through a latch chain spring. When used, the lock is arranged on a theft-proof door; the lower end of the sliding lock latch is connected with a lock core of the theft-proof door. The utility model has the advantage of novel structure; when the lock core of the theft-proof door is damaged, the door can be fixedly locked with a door frame together through the safety latch, and a thief can not open the theft-proof door.

Description

The two door bolt safety locks of break-in

The utility model belongs to a kind of door lock.

Along with the development of the deep and industrial and agricultural production of reforming and opening up to the outside world, the household integral income increases sharply, so theft protection has become the problem that every household is concerned about.Security door has been installed by at present a lot of families.The security door of selling adopts the multiple spot locking mode in the market, has improved the security performance of door.But the burglar has found out the way of destroying lock core, and the lock core that is about to security door destroys the back and takes out, and retracts lock bolt again, and door is opened burglary, has reduced the theftproof performance of security door.

The purpose of this utility model is at the problems referred to above, provides a kind of after the burglar destroys lock core, can be with the two door bolt safety locks of door and the locked break-in together of doorframe, thus guarantee the theftproof performance of security door.

The purpose of this utility model adopts following technical proposals to realize, that is:

The two door bolt safety locks of break-in comprise the lock body of being made up of forward and backward housing, vertical locking device and horizontal locking device.

Vertically locking device comprises sliding latch and four pulleys.A vertical chute is arranged on the sliding latch, and there is opening the inboard, upper end of this vertical chute.Four pulleys are arranged on the upper and lower end of housing respectively symmetrically, and sliding latch is by four pulley clampings and guiding, with the frictional force that reduces the upper and lower motion of sliding latch with the relative position when keeping the upper and lower motion of sliding latch.

Laterally locking device comprises safety latch, 2 extension springs and fastens key with a bolt or latch.2 horizontal concrete chutes and keyway are arranged on the safety latch, be fixed with holder (or pulley) at the front end of safety latch.The door bolt key is supported by a spring, and when safety latch reach certain distance, door bolt key front end can insert in the keyway under support spring promotes, and safety latch is locked.One end of 2 extension springs is fixed on the spring support arm of safety latch both sides, and the other end is separately fixed on the housing, and holder is fluted, and the front end of holder is fixed on the safety latch after passing vertical chute on the sliding latch, and safety latch and sliding latch are slidingly matched.Be fixed with two limited posts on back casing, the front end of two limited posts passes two horizontal concrete chutes on the safety latch respectively, and is slidingly matched with two horizontal concrete chutes respectively.

Can fix a spanner on the door bolt key, the spanner chute of spanner from procapsid stretches out outside the lock body.

Above-mentioned 2 limited posts can be substituted by 2 pulleys, 2 pulleys, can be respectively with safety latch on 2 horizontal concrete chutes be slidingly matched.

For two-way insurance, can drive a keyway in the outside of sliding latch.On housing, open a keyway chamber, fasten key and support spring with a bolt or latch indoor the setting gradually of keyway, and seal keyway chamber rear port with jackscrew.When sliding latch was upwards pushed away the normal position, this door bolt key inserted in the above-mentioned keyway under spring promotes, and sliding latch and doorframe are locked together.

Forward and backward housing constitutes lock body by screw together.

The two door bolt safety locks of break-in can be installed on the suitable location of security door, and the lower end of sliding latch is connected with the lock core of security door by connecting rod.This lockset has the function of 90 ° of break-ins, and door is in the same place with doorframe is locked.When this was locked in just commonly used key open and close security door, the upper end of sliding latch can be inserted in the lock latch jack on the doorframe or in the indentation lock body, promptly locked the door or opened door.In case when the burglar want to open the security door burglary in the mode of broken lock core, the burglar must inwardly draw each lock bolt of security door so that open the door by destroying lock core.But when the burglar inwardly draws each lock bolt, also must spur sliding latch of the present utility model, at this moment the front end holder of safety latch or pulley just from the upper end open of vertical chute of sliding latch be insured door bolt two extension springs pullings and leave sliding latch, and make in the safety latch jack corresponding with it on the front end insertion doorframe of safety latch, door and doorframe are locked together.Fasten key this moment with a bolt or latch by in the keyway on the spring promotion insertion safety latch, safety latch can not moved backward, thus door and doorframe is locked, security door is not taked destructive measure, security door can't be opened, thereby has improved the theftproof performance of security door.The utility model sliding latch is provided with the purpose of a keyway and a door bolt key, in a single day be when after the burglar is destroying lock core, upwards enforcing sliding latch, this door bolt key just inserts under the promotion of spring in the keyway on the sliding latch, sliding latch is blocked, make it to move up and down, thereby realized the two-way insurance of locking.

The utility model novel structure is applicable on the security door that is installed in esidential building, also is applicable to be installed in warehouse gate, national treasury door, money box door, historical relic shop door, safe care registry door, shop door, garage door etc., reaches the purpose of pick-proof and anti-theft.

Fig. 1 is the schematic appearance of a kind of embodiment of the present utility model, and Fig. 2 is the sectional view of Fig. 1, and Fig. 3 is second kind of example structure schematic diagram.The utility model is described in further detail below in conjunction with accompanying drawing.

The two door bolt safety locks of break-in comprise lock body, vertical locking device, horizontal locking device.Lock body is made up of procapsid 1 and back casing 2.Procapsid 1 and back casing 2 are in the same place by bolt, and sliding latch through

hole

25,30 and safety latch through hole 26 are arranged on the lock body.

Vertical locking device comprises sliding latch 3, four pulleys 4, door bolt key 5 and springs 6, and sliding latch 3 has vertical chute 8 and keyway 7.Vertically the inner top side of chute 8 has opening 9, four pulleys 4 are separately fixed at the upper and lower end of back casing 2, sliding latch 3 is by four pulley 4 clampings and guiding, sliding latch 3 can upper and lowerly move, door bolt key 5 and spring 6 are successively set in the spring housing 10 on the back casing 2, seal with jackscrew 11 in the rear ports in the spring housing 10, when sliding latch 3 moves up when surpassing the limit value of setting, door bolt key 5 its front end under the promotion of spring 6 inserts in the keyway 7, and sliding latch 3 lockings can not be moved up and down.

Laterally locking device comprises 12,2 extension springs 13 of safety latch,

door bolt key

14,15,2 limited posts 21 of spring and holder 18.Two horizontal concrete chutes 16 and keyway 17 are arranged on the safety latch 12.Holder 18 is fluted, and the front end that is fixed on safety latch 12 behind vertical chute 8 of sliding latch 3 is passed in the lower end of holder 18, and the front end of safety latch 12 and sliding latch 3 are slidingly matched, promptly safety latch 12 by holder 18 longitudinally chute 8 slide up and down.The front end of safety latch 12 inserts two horizontal concrete chutes 16 that 26, two limited posts 21 of safety latch through hole pass safety latch 12 respectively, and its lower end is separately fixed on the back casing 2, makes safety latch 12 when moving laterally, and does not depart from the position of setting.One end of two extension springs 13 is fixedlyed connected with the support arm 19 of safety latch 12 both sides respectively, its other end respectively be fixed on back casing 2 on two extension spring seats 20 be connected.Door bolt key 14 and spring 15 are arranged in the latch key chamber 22 on the back casing 2, are fixed with spanner 23 on the door bolt key 14, and the spanner chute 24 of spanner 23 from procapsid 1 stretches out outside the lock body.When safety latch 12 was in locking state, door bolt key 14 was under the promotion of spring 15, and its front end inserts in the keyway 17, and safety latch 12 lockings can not be moved forward and backward.

Embodiment two

Embodiment two is structurally basic identical with embodiment one, and its difference is:

1, also be provided with vertical chute 27 on sliding latch 3, vertically in the chute 27 limited post 28 be set, the lower end of limited post 28 is fixed on the back casing 2.

2, on door bolt key 14 right angle connecting lever 29 is arranged, the door bolt key 14 of band connecting lever is connected with back casing 2 by bearing pin 31, and door bolt key 14 can rotate around bearing pin 31.Spring 15 is a torsion spring, and an end of torsion spring is fixed on the door bolt key 14, and the other end is fixed on the back casing 2.When safety latch 12 was in the lock state, right angle connecting lever 29 inserted in the keyway 17, with safety latch 12 lockings.

3, embodiment two is not provided with door bolt key 5 and spring 6.

The

limited post

21,28 of the foregoing description one and embodiment two, all available pulley of holder 18 substitutes.

Claims

1, the two door bolt safety locks of break-in comprise lock body, vertical locking device and horizontal locking device; Lock body is made of by screw procapsid (1) and back casing (2) together, and sliding latch through hole (25), (30) and safety latch through hole (26) are arranged on the lock body, it is characterized in that:

A, vertical locking device comprise sliding latch (3) and four pulleys (4), and vertical chute (8) is arranged on the sliding latch (3), and vertically there is opening (9) inboard, upper end of chute (8); Four pulleys (4) are separately fixed at the upper and lower end of back casing (2), and sliding latch (3) is by four pulleys (4) clamping;

B, horizontal locking device comprise safety latch (12), two extension springs (13), holder (18), two limited posts (21), door bolt key (14) and spring (15); Two horizontal concrete chutes (16) and keyway (17) are arranged on the safety latch (12), holder (18) is fluted, the front end that is fixed on safety latch (12) behind vertical chute (8) of sliding latch (3) is passed in the lower end of holder (18), and the upper and lower slip of chute (8) longitudinally; The front end of safety latch (12) inserts safety latch through hole (26), and two limited posts (21) pass two horizontal concrete chutes (16) on the safety latch (12) respectively, and its lower end is separately fixed on the back casing (2); One end of two extension springs (13) is fixedlyed connected with the support arm (19) of safety latch (12) both sides respectively, its other end respectively be fixed on back casing (2) on two extension spring seats (20) be connected; Door bolt key (14) and spring (15) are arranged in the latch key chamber (22) on the back casing (2), and safety latch (12) is when being in locking state, in door bolt key (14) the front end insertion keyway (17).

2, the two door bolt safety locks of break-in according to claim 1, it is characterized in that described door bolt key (14) has right angle connecting lever (29), described spring (15) is a torsion spring, the door bolt key (14) of band right angle connecting lever (29) connects with back casing (2) by bearing pin (31), this torsion spring one end is fixed on the back casing (2), its other end is fixed on the door bolt key (14), and safety latch (12) is when being in the lock state, and right angle connecting lever (29) inserts in the keyway (17).

3, the two door bolt safety locks of break-in according to claim 1, it is characterized in that keyway (7) is arranged on the sliding latch (3), spring housing (10) is arranged on back casing (2), in spring housing (10), be provided with door bolt key (5) and spring (6), the rear port of spring housing (10) is provided with jackscrew (11), sliding latch (3) moves up and surpasses when limiting the position, and door bolt key (5) front end inserts in the keyway (7).

4, the two door bolt safety locks of break-in according to claim 2 is characterized in that vertical chute (27) is arranged on the described sliding latch (3), vertically in the chute (27) limited post (28) are being set, and the lower end of limited post (28) is fixed on the back casing (2).

5, the two door bolt safety locks of break-in according to claim 1 is characterized in that being fixed with spanner (23) on door bolt key (14), and the spanner chute (24) of spanner (23) from procapsid (1) stretches out outside the lock body.