CN2276538Y - Special lock casing for core-plug door lock - Google Patents

Abstract

The utility model relates to a special lock case for a lock core inserting door lock, a lock core hole at the outer side of the lock case is made into a double-layer protective sleeve, the inner diameter of the inner layer of the protective sleeve is smaller than the outer diameter of a lock core, a long hole is arranged at the inner side of the lock case, and a chain inserting pin which can slide is arranged on the long hole. The lock case has protective action to the lock core, and can protect the lock core from being destroyed by others. The inserting pin can prevent the others from suddenly bumping into a room. The utility model is used on a security door, and the anti-theft performance of the security door can be further improved.

Description

The special-purpose lock box of mortise door lock

The utility model relates to the special-purpose lock box of a kind of mortise door lock, especially a kind of outside core protective sleeve with lock, the lock box of inboard band latch.

The lock box of the mortise door lock that uses on security door at present, the lock core hole in its outside is that single flat is planar, does not have protective effect for lock core, is destroyed by the people easily.In addition, the lock box inboard is not provided with latch yet, if lock core destroyed after, security door has just lost antitheft effect.

The purpose of this utility model is in order to provide a kind of outside to have the lock core protective sleeve, and the inboard has the special-purpose lock box of mortise door lock of latch.

The special-purpose lock box of this mortise door lock; the lock core hole that it is characterized in that the lock box outside is made double-deck protective sleeve 1; the internal diameter of its internal layer 2 is less than the external diameter of lock core; offer a slotted hole 3 in the inboard of lock box; the center of this slotted hole is a toroidal, and a slidably chain bolt is housed on the slotted hole of lock box inboard.

Further specify below in conjunction with the architectural feature of accompanying drawing utility model.

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the rear elevation of Fig. 1.

Fig. 4 is the structural representation of latch.

The utility model is to transform on the basis of existing product and succeed in developing.Protective sleeve 1 illustrated in figures 1 and 2 is a double-decker, and other parts still are individual layer with original the same.Because the internal diameter of the internal layer 2 of protective sleeve 1 so lock core is played a protective role, can prevent that lock core from being destroyed by the people less than the external diameter of lock core, has strengthened theftproof.Offer slotted hole 3 (as shown in Figure 3) in the inboard of lock box, chain bolt shown in Figure 4 is contained on the slotted hole 3 by the center hole of slotted hole 3, and latch can slide arbitrarily on slotted hole 3.The other end and the anti-theft door frame of latch chain are fixed, even under this state, open door lock, can not inlet chamber in, can prevent that the stranger from banging into, can further strengthen the theftproof of security door.Chain bolt shown in Figure 4 is known, can buy in market.

The utility model mainly is used on the security door, and it is easy to manufacture, and is reasonable in design, practical.

Claims (1)

1. The special-purpose lock box of a kind of mortise door lock; the lock core hole that it is characterized in that the lock box outside is made double-deck protective sleeve 1; the internal diameter of its internal layer 2 is less than the external diameter of lock core; offer a slotted hole 3 in the inboard of lock box; the center of this slotted hole is a toroidal, and a slidably chain bolt is housed on the slotted hole of lock box inboard.

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