CN2344497Y

CN2344497Y - Concealed safety door lock

Info

Publication number: CN2344497Y
Application number: CN 98232606
Authority: CN
Inventors: 李伟国; 李自珍
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-04-02
Filing date: 1998-04-02
Publication date: 1999-10-20
Anticipated expiration: 2008-04-02

Abstract

The utility model provides a concealed safety door lock. When the utility model is adopted, the rack transmission of a gear is changed to the lever transmission; thus, a lock bolt can be driven to do motion at a long moving range even if a handle does the rotation of a minor angle, and the long moving range is realized by using the minor rotation. If a lock body and a transmission mechanism are respectively arranged at the two handles, a user can do left and right operation; thus, the time is saved, and the convenient use is realized. A concealed handle 9 which is provided with the lock body 2 is covered, so a lock hole can be concealed, and the safe use and the beautiful appearance are realized. The utility model is particularly suitable for a double-leaf door. When the utility model is adopted, a traditional lock is renewed from the aspects of inventive concept, design and appearance. The utility model has the advantages of low cost and easy industrial production.

Description

Stealthy safety door latch

The utility model relates to small stores, relates to the mechanical door lock in the commodity, specifically lock stealthy safety door latch by name.

Lock is antitheft, safe bodyguard, especially the many many theftproof locks of meter, safety lock are come out one after another since the reform and opening-up, but be the built-in lock that single door is used mostly, many iron rod irons of the many employings of its mode are made keeper or are added the scheme of chain, and biparting door lock then more is to utilize gear, rack structure.Its structure of the utility model of Chinese patent ZL9522647.3 " safe-guard door lock " is to utilize the engaged transmission of wheel and rack to reach the purpose of the long distance motion of keeper as shown in Figure 1.Jimo City, Qingdao biparting door lock that industry Lock Factory produces that shakes also is a similar structures.This class lock is because keeper is long, but insurance in force, overcome the keeper weak point and cannot stand the problem that great power pushes, but there is the home that will make keeper operation design in this lock construction form, gear need be made the problem that multi-turn is rotated, and this makes and locks a door at every turn, during key money and bother, during concrete operations, need the right hand to insert key and open door lock, and then just can open or lock with right hand rotating shaft multi-turn.Adopt this structure gear, tooth bar cost wherein higher in addition, cause the lock cost higher.

The purpose of this utility model will be invented a kind of rotating shaft exactly relative to less the rotation arranged, just can make keeper reach safe stroke, just realize the transmission of little rotation, long stroke, when lock body and lever transmission mechanism set up separately, can realize that also left hand and right hand operates simultaneously, meet people's custom.And can make and lock a door stealthyly, attractive in appearance, and safety, theftproof performance are good, with low cost.

Below in conjunction with accompanying drawing the utility model is elaborated, embodiment also is melted into wherein.

Accompanying drawing 1 is the structural representation of biparting door lock in the prior art.

Accompanying drawing 2 is structural representations of the present utility model.

Accompanying drawing 3 is elevations of stealthy handle 9 in the utility model.

Accompanying drawing 4 is cross sectional side views of stealthy handle 9 in the accompanying drawing 3.

Gear is changed in the utility model design, the rack-and-pinion drive mechanism is the lever drive mechanism, and it is made up of lock 1, lock body 2, locking bolt 4, handle, lever 6, group power 5 etc.It has two pairs of handles, and (and can inside and outside simultaneously install), two pairs of handles can be sub-packed on the two fan doors.As shown in Figure 2, when lock body 2 and lever transmission mechanism are placed in two fan doors when going up, if the handle of installing on the Yishanmen of the right includes lock body 2, the handle here is referred to as stealthy handle 9, then the handle of installing on the Yishanmen of the left side is the rotating shaft handle, the rotating shaft handle is connecting lever 6 by rotating shaft 7, and the other end of the lever 6 little driving lever 8 that vertically is being connected, driving lever 8 place in the power of dialling 5.When opening the door, at first open lock with key, 3 of dops that are fixed on the lock body 2 lift the draw-in groove that leaves on the locking bolt 4, and group power 5 that left hand rotating shaft handle is by lever 6---driving lever 8---drives locking bolts 4 and does parallel moving, and the door of locking promptly is opened.The process of locking a door is same, and just direction of rotation is opposite.If when lock body 2 and lever transmission mechanism were in together in the handle, the utility model just became a kind of stealthy safety lock of single door.At the door of different size specifications, and design the utility model---stealthy safety door latch of plurality of specifications, the firm degree of its safety depends primarily on the thickness of lock, the thickness of locking bolt.If shaft rotary corner is designed in the 90-120 degree scope, lever 6 designs locking bolt stroke when 8cm can be 6-8cm.The general double door locking bolt Design of length of using gets final product as 15cm.The handle profile can be designed to brave capitiform or quincunx.

The utility model is installed useful 11 on the outer face of the stealthy handle 9 that includes lock body 2; the profile of cover plate 11 and handle profile adapt; last with rivet 10 connections; down with projection 12 location; see Fig. 3, Fig. 4, but light turn-off soon during use, so that insert key operated or locking; locking back close the cover 11 was so not only attractive in appearance but also be a kind of stealthy protection.

Owing to use lever instead and dial the power transmission mechanism, realized little torque (rotating shaft), big stroke (locking bolt).When lock body 2 and lever transmission branch are in two handles, but the right-hand man is shared, but unblanks as the right hand, the left hand rotating handles, and the both hands co-operate is promptly saved time, and meets people's habitual movement again.Install lid additional at the lock body end face, not only attractive in appearance but also play protection and stealth to locking a door, banned gear, rack structure, reduced cost.Be easy to make, be easy to suitability for industrialized production.

Claims

1, a kind of stealthy safety door latch, form by lock (1), lock body (2), locking bolt (4), handle etc., it is characterized in that: transmission mechanism is a lever, be that handle drives rotating shaft (7), thereby drive lever (6), dial power (5), by dialling parallel the moving of locking bolt (4) that power (5) drive is connected with it by terminal little driving lever (8) drive that vertically is connected of lever (6), the dop of lock body (2) lower end can snap in the draw-in groove of locking bolt (4), and the handle that lock body (2) is installed is stealthy handle.

2, stealthy safety door latch according to claim 1 is characterized in that the end face of stealthy lock body (2) in handle is equipped with cover plate (11), and the profile and the handle profile of cover plate (11) adapt, and the upper end is fixed with rivet (10) riveting, and the lower end is fixing by projection (12).