CN2682157Y - Lock pin with composite keyhole gate - Google Patents

Abstract

Disclosed is a lock pin with a composite keyhole gate, comprising a lock body, a rotary core and a rotary core sleeve which are connected into integration by a rotary core sleeve key. The rotary core is provided with an axial lock hole; the front parts of the rotary core and the rotary core sleeve are provided with at least a group with two radial flat holes which are communicated with the lock hole; the block-shaped keyhole gate whose one end is provided with a convex circular arc is arranged in the flat hole. The position which is corresponding to the lock body is also provided with two radial flat holes; a plunger of the spring is arranged in the lock body; a key which is matched with the lock body is provided with two flat grooves at the corresponding position. As the front end of the lock core of the utility model is provided with the block-shaped keyhole gate shadowed; improper keyhole gate size can not open the lock; the mutually staggered multiple gates improve the performance of theft proofing. The utility model is simple in structure and low in cost.

Description

The compound gate-type lock core of a kind of keyhole

Technical field

The utility model relates to a kind of lock core, and especially a kind of keyhole has the lock core of composite gate.

Background technology

Existing lock core comprises fixing lock body and interior rotating commentaries on classics core thereof, on the commentaries on classics core open keyhole is arranged, and can allow key insert and unblank so that twist the commentaries on classics core.And this open keyhole has just stayed convenience to the pick lock, makes it come jack-up respectively to arrange pellet shot from a slingshot through keyhole with special tool easily and easily lock is pried open.Be anti-drawback here, people have designed variety of way, as Chinese patent communique invention disclosed patent " protector of covering key hole of door lock " (95100726.2) once, this device has a key hole to be additional to interior fixedly receptacle, the one cover lock portion that can open and hide key hole is installed thereon, and via lock that these two ones (fixedly receptacle and cover lock portions) are sealed.Cover lock portion is the moulding of pot shape round bottom, the fixedly receptacle of settling column type in it, and the pot shape of cover lock portion front becomes the plane with the fixing bottom of receptacle therebetween, and is somebody's turn to do that fixedly receptacle and cover lock portion can be reversed mutually.Or, be a kind of additional lockset of door lock that utilizes coded lock with the keyhole covering of door lock specifically as utility model patent " the additional lock of key hole of door lock " (99251289.1).It comprises shell and is positioned at covering axle, the supporting that its inner coded lock structure, an end can cover keyhole and covers shaft support, on each cipher chips circumference of coded lock structure a breach is arranged all, the consistent aligning of each breach covers axle, cover axle and be positioned at each breach bottom, arbitrary breach misalignment covers axle, cover axle and be positioned at outside the circumference of each cipher chips, an elongate slots position is arranged on the support, cover axle and be positioned at this groove.These two kinds of schemes all can be said so, and locking locks pins the door lock hole, makes the complex structure cost rise.

The utility model content

The purpose of this utility model is to provide a kind of and can covers lockhole, the compound gate-type lock core of keyhole simple in structure again.

For achieving the above object, the compound gate-type lock core of keyhole of the present utility model, comprise fixing lock body, with key fuse the open lockhole of rotatable band the commentaries on classics core and change core retainer plate, spring holder, it is characterized in that: described commentaries on classics core and change core retainer plate the front portion, have at least one group two radially flat hole and connect with axial lockhole; On the correspondence position of described lock body, also have corresponding radially flat hole; Change core and change that an end is arranged in the flat hole of core retainer plate is that the block keyhole door of dome arc can radially slidably reciprocate, have the spring holder to withstand on the protruding arc end of keyhole door in the flat hole of lock body; The key that matches with it has flat groove in the corresponding position.

Described block keyhole door bottom surface is shaped on the guide-localization fin, described lock body, change core, change core retainer plate radially flat hole correspondence position have the guide-localization groove.

Make the stop bit breach for two jiaos of described block keyhole door flush end.

When locking, lock body, corresponding one-tenth one hole, flat hole of changeing core, changeing core retainer plate, spring holder in the flat hole of lock body is with block keyhole Men Dingxiang lockhole center and seal lockhole and be stuck in lock body, change between the core and make it and can not relatively rotate, when key is inserted lockhole, it backs down block keyhole door to both sides, its dome arc corrects and is between lock body, the commentaries on classics core when block keyhole door falls into flat groove, turn key and just can make and change core and rotate, add key front end correspondence and just can unblank after having gone up the pellet shot from a slingshot of lockhole inner end.

The beneficial effects of the utility model are: because this novel lock core lockhole front end has block keyhole door to cover, as having added to lockhole together or more sliding door, sliding door is opened big or has been opened little and all do not driven lock, and the multiple tracks sliding door staggers mutually and more improved theftproof performance, and cost simple in structure is low.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the lock core structure cross-sectional schematic of the utility model embodiment.

Fig. 2 is the cross-sectional schematic after lock core inserts key fully.

Fig. 3 is the A-A line cross-sectional schematic along Fig. 1.

Fig. 4 is the B-B line cross-sectional schematic along Fig. 1.

Fig. 5 is that Fig. 3 inserts the view in the key way.

Fig. 6 is that Fig. 3 inserts the view that key finishes.

Fig. 7 is the view that Fig. 3 twists changes core.

Fig. 8 is that the master of block keyhole door looks schematic diagram.

Fig. 9 is the schematic top plan view of Fig. 8.

Figure 10 is that schematic diagram is looked on the left side of Fig. 8.

Figure 11 is that the master of key looks schematic diagram.

Figure 12 is that schematic diagram is looked on Figure 11 right side.

Figure 13 is that schematic diagram is looked on the left side of Figure 11.

Figure 14 is the C-C line cross-sectional schematic along Figure 13.

Figure 15 is the D-D line cross-sectional schematic along Figure 13.

Figure 16 is the E-E line cross-sectional schematic along Figure 13.

Among the figure: 1 lock body, 2 change core, and 3 change core retainer plate, 4 block keyhole doors, 5 spring holders, 6 change core retainer plate key, 7 keys.

The specific embodiment

From Fig. 1 to Figure 16, can see, the compound gate-type lock core of keyhole of the present utility model, comprise the tubular lock body that can be fixed on the door, change commentaries on classics core and the commentaries on classics core retainer plate that the core retainer plate key fuses with two, entirely be sleeved in the lock body, can rotate relative to lock body under certain condition, change in the core and have axial lockhole, the front portion of changeing core and changeing core retainer plate, two groups of radially flat hole and lockhole perforations of totally four before and after having, the center, lower surface in hole has semicircle gathering sill, it is the block keyhole door of dome arc that one end is arranged in the flat hole, its center, bottom surface is shaped on semicircle guiding fin, make the stop bit breach for two jiaos of flush end, change on the core retainer plate key so that when closure, withstand on, make the lockhole door on both sides correctly close at the lockhole center; Two groups of totally four radially flat holes before and after on the lock body correspondence position, also having with semicircle gathering sill, in the spring holder is arranged; The key that matches with it has the flat groove in four roads in the corresponding position.

Semicircle on lockhole door guiding fin both shouldn't be also can be more than one, or built in last end face, the flat hole of Dui Ying each gathering sill also must be done corresponding variation therewith; The lockhole door can be twice or more than, stagger mutually in the position of front and back door when unblanking; Can existing various lock cylinder structure after the lockhole door; present embodiment is bilateral post center lockhole blade lock core structure after the lockhole door; no matter but which kind of structure lockhole is behind the door,, all fall into the protection domain of this patent as long as adopted this novel architectural feature.

Claims (2)

1, the compound gate-type lock core of a kind of keyhole, comprise lock body (1), to change commentaries on classics core (2) and the commentaries on classics core retainer plate (3) that core retainer plate key (6) fuses, change in the core and have axial lockhole, it is characterized in that: described commentaries on classics core and the front portion of changeing core retainer plate, have at least one group two radially flat hole and lockhole and connect, it is that the block keyhole door (4) of dome arc can radially slidably reciprocate that an end is arranged in the flat hole; On the lock body correspondence position, also have corresponding radially flat hole, in have spring holder (5) to withstand on the protruding arc end of keyhole door; The key that matches with it (7) has the flat groove of twice in the corresponding position.

2, the compound gate-type lock core of keyhole according to claim 1, it is characterized in that: the lower surface in described flat hole has gathering sill; The corresponding bottom surface of described block keyhole door (4) is shaped on guiding fin, flush end two jiaos and makes the stop bit breach.

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