CN102052006A - A kind of house door lock and the door leaf structure adopting this lock - Google Patents

Abstract

The present invention discloses a door lock, comprising a lock core, an outer panel and an inner panel, and also comprising a protective cover matched with the head of the lock core to expose the key hole and the outer panel, and the back of the protective cover is provided with a screw hole matched with the mounting screw on the front door panel of the sandwich door leaf. In the present invention, since the protective cover is provided at the head of the lock core, and the protective cover is fixed to the front door panel of the sandwich door leaf by screws, even if the door leaf is impacted by an external force to deform the front door panel, a gap is formed between the outer panel and the front door panel, and the outer panel is pried off, the protective cover is always tightly combined with the front door panel, and a gap will not be formed between the front door panel and the front door panel due to deformation of the front door panel, and it is difficult to pry off the protective cover with a tool, thereby playing a role in protecting the lock core.

Description

A kind of house door lock and the door leaf structure adopting this lock

technical field

The invention belongs to locks, in particular to a door lock and a door leaf structure using the lock.

Background technique

The door locks popular in the market are usually easy to break with violence and not anti-theft. Existing house door lock as shown in Figure 1, Figure 2, comprises lock body 8, the lock core 5 that cooperates with lock body 8, outer panel 1 and inner panel 2. When the door lock is installed, the lock body 8 is installed between the front door panel 11 and the rear door panel 10 by screws 12, and the lock core 5 is installed on the interlayer door leaf 3 to cooperate with the lock body 8, and is fixed on the lock body 8 by screws 9. Install the outer panel 1 and inner panel 2 again. Outer panel 1 and inner panel 2 are correspondingly installed on the front and rear door panels 11,10 of door leaf 3 by two pieces of screws 6, and this type of structure cannot prevent violent damage. Most of the door leaves 3 are laminated, and the door leaves 3 are easily deformed after being hit by an external force, as shown in Figure 3, so that a gap A is formed between the outer panel 1 and the front door panel 11 of the door leaf 3, and it is easy to use a lock picking tool to remove the outer panel. 1 is pried off, so that the lock core 5 is exposed outside the door leaf 3. Since the lock core 5 is not protected by the outer panel 1, it is easy to twist the lock core 5 with a tool, and then easily open the door to achieve the purpose of burglary. There is a great potential safety hazard in the assembled structure.

Contents of the invention

The object of the present invention is to provide a door lock and a door leaf structure using the lock, so that when the outer panel of the lock is damaged, the lock cylinder can still be protected and the safety of the lock can be improved.

In order to achieve the purpose of the present invention, the provided house door lock includes a lock body, a lock core matched with the lock body, an outer panel and an inner panel, and is characterized in that it also includes a keyhole end matching with the lock core and exposing the outer panel. The protective cover is provided with a hole corresponding to the keyhole of the lock cylinder, and the back side of the protective cover is provided with a screw hole matched with the mounting screw on the front door plate of the interlayer door leaf.

The door leaf structure adopting the house door lock provided by the present invention comprises a front door panel and a rear door panel of the interlayer door leaf, a lock body installed between the front door panel and the rear door panel, a lock cylinder installed on the interlayer door leaf and matched with the lock body, and a lock body Cooperate with the outer panel and inner panel installed on the front door panel and the rear door panel, the head of the lock cylinder exposes the front door panel, and it is characterized in that the key hole end of the lock cylinder is provided with a protective cover that exposes the outer panel, and the protective cover There is a hole corresponding to the key hole of the lock core, and the back side of the protective cover is provided with a screw hole, and the screw is tightened from the back side of the front door panel in the screw hole to fix the protective cover on the front door panel.

The outer wall of the protective cover is tapered.

In the present invention, a protective cover is provided on the head of the lock cylinder, and the protective cover is fixed on the front door panel of the interlayer door leaf by screws. If it is dropped, the protective cover is always tightly combined with the front door panel, and no gap will be formed between the front door panel and the front door panel due to the deformation of the front door panel. It is difficult to pry off the protective cover with tools, which can protect the lock cylinder. The tapered outer wall of the protective cover can better prevent the clamps from clamping the protective cover and thus destroying the protective cover. The above-mentioned structure of the present invention greatly improves the anti-theft performance of the anti-theft door.

Description of drawings

Fig. 1 is the exploded schematic diagram of existing house door lock.

Fig. 2 is a schematic diagram of the appearance of the existing door lock.

Fig. 3 is a schematic diagram of the door leaf after being hit by an external force.

Fig. 4 is an exploded schematic view of the door lock and the door leaf structure of the present invention.

Fig. 5 is a schematic diagram of the appearance of the door lock and the door leaf structure of the present invention.

Fig. 6 is a schematic diagram of the protective cover in the inventive door lock.

Detailed ways

See Fig. 4 to Fig. 6, the house door lock of the present invention, comprises lock body 8, the lock core 5 that cooperates with lock body 8, outer panel 1 and inner panel 2, also includes a key hole end 13 with lock core 5 The matching protective cover 4 that exposes the keyhole 16 and exposes the outer panel 1, the back side of the protective cover 4 is provided with a screw hole 17 that cooperates with the mounting screw 7 on the front door panel 11 of the interlayer door leaf 3.

The door leaf structure adopting the above-mentioned house door lock provided by the present invention comprises a front door panel 11 and a rear door panel 10 of the interlayer door leaf 3, the lock body 8 is installed between the front door panel 11 and the rear door panel 10 by screws 12, and the lock core 5 is installed on the interlayer The door leaf 3 cooperates with the lock body 8, and is fixed on the lock body 8 by screws 9, and the outer panel 1 and the inner panel 2 cooperate with the lock body 8 and are installed on the front door panel 11 and the rear door panel 10 with screws 6, and the lock core 5 The head of the front door panel 11 is exposed, and the key hole end 13 of the lock cylinder 5 is provided with a protective cover 4. The outer panel 1 is provided with a hole 15. The protective cover 4 exposes the outer panel 1 from the hole 15. On the protective cover 4 Open hole 14 is provided with the keyhole 16 correspondence of lock cylinder 5, and the back side of protective cover 4 is provided with screw hole 17, is tightened in this screw hole 17 by four screws 7 from the back side of described front door panel 11 and protective cover 4 Fixed on the front door panel 11, the outer wall 18 of the protective cover 4 adopts a tapered shape (see FIG. 6).

Claims (4)

1. A door lock, comprising a lock body, a lock core matched with the lock body, an outer panel and an inner panel, is characterized in that it also includes a protective cover matching with the key hole end of the lock core and exposing the outer panel to protect The cover is provided with a hole corresponding to the keyhole of the lock cylinder, and the back side of the protective cover is provided with a screw hole matched with the mounting screw on the front door plate of the interlayer door leaf. 2. The door lock according to claim 1, characterized in that the outer shape of the protective cover adopts a circular truncated shape. 3. A door structure adopting the door lock of claim 1, comprising a front door panel and a rear door panel of a sandwich door leaf, a lock body installed between the front door panel and the rear door panel, a lock body mounted on the interlayer door leaf and matched with the lock body The lock cylinder, the outer panel and the inner panel installed on the front door panel and the rear door panel correspondingly with the lock body, the head of the lock cylinder exposes the front door panel, and it is characterized in that the keyhole end of the lock cylinder is provided with an exposed outer panel The protective cover is provided with a hole corresponding to the key hole of the lock cylinder, and the back of the protective cover is provided with a screw hole, and the screw is tightened from the back of the front door panel in the screw hole to fix the protective cover on the front door panel superior. 4. The door lock according to claim 3, characterized in that the outer shape of the protective cover adopts a circular truncated shape.

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