CN2439505Y - Lock equiped with multiple stage key - Google Patents

Abstract

The utility model relates to a lock provided with a multiple stage key, which is additionally provided with a middle lock bead and a cylindrical hole on a locking head composed of a lock core, a lock gallbladder, an upper lock bead, a lower lock bead, a spring and a key, wherein, the middle lock bead is arranged between the upper lock bead and the lower lock bead, and the cylindrical hole is arranged at the side of the lock gallbladder; the different positions and the number of the middle lock bead and the cylindrical hole can decide the kinds and the stages of the key. The utility model changes the traditional structure that one locking head can only be opened by one key, has active effects on the aspects of preventing from being stolen, convenient use and saving expenses.

Description

A kind of tapered end of being furnished with multistage key

The utility model relates to a kind of lock head device that is used for opening lockset and security door, the tapered end that especially uses theory of mechanics to open by key.

At present, known tapered end is by lock core, lock gall, the pearl of locking, locks pearl, spring, key down and constitute.Key is inserted lock gall,, make lock pearl and contacting on the interface that is in lock gall and lock core of lock pearl down by differing heights tooth on the key and the engagement of locking pearl up and down, the rotation lock gall, thus open tapered end.But the mode of its unlatching is unique, promptly can only use same type key unlocking, changes key and just must change tapered end or change lockset.

The purpose of this utility model provides a kind of multistage tapered end with number of different types key.It can be changed the key of lockset at any time, rapidly and not need to change tapered end or lockset.

The purpose of this utility model is achieved in that on lock core, lock gall, the pearl of locking, locks in the frame for movement of pearl, spring, key down, lock pearl and cylindrical hole in the middle of the increase, and the lock pearl is in and locks between pearl and the following lock pearl in the middle of making, and cylindrical hole is in a side of lock gall.When first order key inserted lock gall, middle lock pearl moved upward with locking pearl down, with the interface of Zhu Xiaduanmianding to lock core and lock gall of locking.The pearl of promptly locking is on the interface of lock core and lock gall with the middle contact surface of locking pearl, rotates lock gall and can open tapered end.

When second level key inserted lock gall, because its tooth corresponding with centre lock pearl exceeds a middle lock pearl thickness than first order key, middle lock pearl moved upward with locking pearl down, the centre is locked the lower surface of pearl and pushes up to the interface of lock core and lock gall.The contact surface of lock pearl and following lock pearl rotates lock gall promptly on the interface of lock core and lock gall, can open tapered end.When the cylindrical hole central axis of lock pearl and lock gall one side coincide in the middle of lock gall turns an angle, and makes, middle lock pearl was fallen in the cylindrical hole under the pressure of spring.Pearl is smaller because the cylindrical hole degree of depth and middle lock pearl consistency of thickness, both diameter ratios are locked, so after middle lock pearl was fallen into cylindrical hole, the pearl of locking still was in the lock core.And middle lock pearl remains in the cylindrical hole under spring action, can't get back to original position.When pearl is locked not after locking between the pearl up and down in the centre, key bit changes with lock pearl meshing condition, first order key again can't be opened tapered end, and the key pearl that continues can to guarantee to lock in the second level is on the interface of lock core and lock gall with the contact surface of lock pearl down, thereby continuation can be used.From as can be seen above, the varying number in pearl and special hole is locked in the centre, can determine to use the different progression of key.

Owing to adopt such scheme, to compare with other present tapered ends, the utility model has following advantage:

(1) it can be changed the key of lockset or security door at any time, rapidly and not need to change lock

Head or lockset;

(2) it can be by quantity, position and the thickness thereof of lock pearl in the middle of changing, to same tapered end

Produce thousands of different key, promptly the progression of key is unlimited;

(3) it be applicable to the lockset of with good grounds lock pearl principle work, need not to change other of lockset

Structure, can be widely used in common household, antitheft, extraordinary security personnel and other various each

The lockset of sample and security door.

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

Fig. 1 is a cross-sectional view of being furnished with the tapered end use first order key of multistage key;

Fig. 2 is a cross-sectional view of being furnished with the tapered end use second level key of multistage key;

Fig. 3 is the cross-sectional view that uses first order key after middle lock pearl is in cylindrical hole;

Fig. 4 is the cross-sectional view that uses second level key after middle lock pearl is in cylindrical hole;

Among the figure 1, lock core 2, lock gall 3, the pearl 4 of locking, lock pearl 5, middle lock pearl 6, cylindrical hole 7, first order key 8, second level key 9, spring down.

In Fig. 1, lock core (1), lock gall (2), the pearl of locking (3), lock in the tapered end that pearl (4), middle lock pearl (5), cylindrical hole (6), first order key (7), spring (9) form down, middle lock pearl (5) is in locks between the pearl (4) under the pearl of locking (3), cylindrical hole (6) is in a side of lock gall (2), its degree of depth, diameter and middle lock pearl match, lock pearl (3) and to lock pearl (4) diameter down smaller of diameter ratio.When first order key (7) inserted lock gall (2), middle lock pearl (5) was on the interface of lock gall (2) and lock core (1) with the contact surface of the pearl (3) of locking, and lock gall (2) can rotate in lock core (1).

In Fig. 2, when second level key (8) inserted lock gall (2), middle lock pearl (5) was on the interface of lock gall (2) and lock core (1) with the contact surface of the pearl (3) of locking, and lock gall (2) can rotate in lock core (1).Rotate lock gall (2) to cylindrical hole (6) axial line when inserting second level key (8), lock pearl (5) when axial line is consistent with the centre, middle lock pearl (5) is fallen in the cylindrical hole under the effect of spring (9).

In Fig. 3, after centre lock pearl (5) is fallen in the cylindrical hole (6), when inserting first order key (7) rotation lock gall (2) again, at this moment, because middle lock pearl (5) is not in the pearl of locking (3) and locks between the pearl (4) down, the pearl (3) of locking is pushed down in the lock gall (2) in the effect of spring (9), can't rotate lock gall (2), thereby can not open tapered end.

In Fig. 4, after centre lock pearl (5) is fallen in the cylindrical hole (6), insert second level key (8) again, at this moment, though middle lock pearl (5) is not or not the pearl of locking (3) with down between the lock pearl (4), but pearl of locking (3) and following lock pearl (4) contact surface are also on lock core (1) and lock gall (2) interface, so still rotatable lock gall (2) promptly still can be opened tapered end.

In above embodiment, quantity, thickness, the position of middle lock pearl (5) and cylindrical hole (6) are a set value.If will increase the progression of tapered end key can realize by following two kinds of methods:

First method: lock pearl and the residing position of cylindrical hole in the middle of changing.From last example as can be known, a middle lock pearl is set and just can realizes the secondary key system in a lock micropylar canal; If lock pearl all be provided with in N lock micropylar canal in the middle of just can be realized (N+1) level key system.The position of cylindrical hole is corresponding with middle lock pearl.

Second method: quantity, the thickness of lock pearl in the middle of changing.In same lock micropylar canal, if being locked pearl, the centre is divided into M equal portions (under minimum thickness allows), promptly be divided between M brachymedial and lock pearl, overlay in the same lock micropylar canal.According to the structural principle of an above-mentioned middle lock pearl decision one-level key, this method can obtain M level key system.The quantity of cylindrical hole is corresponding with middle lock pearl.

In sum, the utility model can dispose the different key of (N+1) * M level at most to same tapered end.

Claims (3)

1. tapered end of being furnished with multistage key comprises lock core, lock gall, the pearl of locking, locks pearl, key and spring down, it is characterized in that lock pearl and have between the lock pearl down in the middle of the lock pearl, a side has cylindrical hole in lock gall.

2. a kind of tapered end of being furnished with multistage key according to claim 1, the lock pearl can be one or more in the middle of it is characterized in that.

3. a kind of tapered end of being furnished with multistage key according to claim 1 is characterized in that cylindrical hole can be one or more.

Images