KR20030034714A - Digital door lock - Google Patents

Abstract

PURPOSE: A structure for preventing a key tail sagging of a digital door lock is provided to improve the assembly thereof by easily inserting a key tail into a key groove by placing the key tail to the direction same with the direction of the key cylinder without sagging of the spring when the key tail of the key cylinder installed on the outside of the body is assembled at a key groove of a dead bolt assembly. CONSTITUTION: A structure for preventing a key tail sagging of a digital door lock includes a key tail(28) installed at a groove(20a) formed on one end of a key cylinder(20) through a cap and a spring(24) for supplying an elastic force to the key tail(28) by installing into the groove(20a) of the key cylinder(20) in such a way that the key tail(28) is constantly maintained at a direction same to the axial direction of the key cylinder(20) without sagging from the axial direction.

Description

Key door sag prevention structure of digital door lock key cylinder {DIGITAL DOOR LOCK}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital door lock, and in particular, when the door lock is installed, a key tail installed in the key cylinder is kept in the same direction as the axial direction of the key cylinder without sagging so that the key tail is assembled to the key groove of the dead bolt assembly. It relates to a key tail sag prevention structure of a digital door lock key cylinder for facilitating the castle.

In general, digital door locks are equipped with electronic circuitry to automatically lock and open the door lock by pressing a number button or using a portable remote control. These digital door locks have recently been used in homes and commercial buildings for convenience. The situation is spreading a lot.

In such a digital door lock, a key cylinder is configured on the outer body so that the door lock can be manually operated by using a key in case the electronic circuit breaks or the battery life ends and the electronic operation is not possible.

In other words, when the key is inserted into the key cylinder and rotated in one direction, the key tail that interlocks with the key cylinder operates the dead bolt assembly, where the dead bolt floats to open or close the door.

The key tail is installed at the axial end of the key cylinder. In general, the key tail installed at the key cylinder is installed with a marginal allowance in the key cylinder in consideration of an assembly tolerance with a key groove formed in the dead bolt assembly. For this reason, the key tail provided in the conventional key cylinder had a structure which sags down by its own load.

Accordingly, when installing the digital door lock, there was a difficulty in inserting the key tail into the key groove formed in the dead bolt assembly and not aiming.

That is, when the door lock is installed, the dead bolt assembly is first installed with a screw through the side of the door, and then the occlusion is placed on the outer body and the inner body of the door lock from the outside and the inside of the door. The key tail of the key cylinder installed in the body is inserted into the key groove of the dead bolt assembly for assembly.

At this time, the key tail installed in the key cylinder is drooped, and the center of the key cylinder of the precisely formed dead bolt assembly does not coincide with the center. Therefore, the operator lifts the drooped key tail a little with a sharp awl or a screwdriver, It is difficult to assemble work by inducing assembly in accordance with the direction.

Therefore, the present invention was devised to solve the above problems of the prior art, and the key tail installed in the key cylinder is always kept in the same direction as the axial direction of the key cylinder without sagging, thereby facilitating the assembly when the door lock is installed. An object of the present invention is to provide a key tail sag prevention structure of a digital door lock key cylinder, which can be used for convenience.

In order to achieve the above object, the present invention,

A key cylinder installed on the outer body of the door lock and connected to the dead bolt assembly and the key tail for manual operation of the door lock.

A spring is installed in the groove of the key cylinder to provide an elastic cushion to the key tail so that the key tail installed through the cap in the groove of the end of the key cylinder is always kept in the same direction without sagging with the axial direction of the key cylinder. It is characterized by the installation.

It is characterized in that the support plate for the stable support of the spring is further installed between the spring and the end engaging plate of the key tail.

1 is a perspective view of the outer body of the digital door lock is installed key cylinder of the present invention.

Figure 2 is an exploded perspective view of the key cylinder and the dead bolt assembly of the present invention.

Figure 3 is an exploded perspective view of the key cylinder of the present invention.

4 is a sectional view of principal parts of a key cylinder of the present invention;

Figure 5 is a side view of the digital door lock illustrating the installation state of the key cylinder of the present invention.

<Explanation of symbols for the main parts of the drawings>

10: outer body 20: key cylinder

20a: groove 22: screw

24, 33: spring 26: support plate

28: key tail 30: washer

32: cap 34: stopper pin

100: dead bolt assembly 102: key groove

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Digital door lock is generally composed of a dead bolt assembly installed on the side of the door, and an outer body and an inner body installed on the outside and the inside of the door, and the electronic circuit is built in by pressing a number button or using a portable remote control The lock and opening operation of the door lock can be performed automatically, and the key cylinder is installed on the outer body in case of an emergency and is configured to open the door as a key.

The present invention relates to the key cylinder described above.

1 is a perspective view of the outer body of the digital door lock is installed key cylinder of the present invention, Figure 2 is an exploded perspective view of the key cylinder and the dead bolt assembly of the present invention, Figure 3 is an exploded perspective view of the key cylinder of the present invention, Figure 4 is a sectional view of principal parts of the key cylinder of the present invention, and FIG. 5 is a side view of the digital door lock illustrating the installation state of the key cylinder of the present invention.

1 and 5, reference numeral 10 shows the outer body constituting the digital door lock.

The key cylinder 20 of the present invention is inserted into the outer body 10 is installed through the screw 22.

As shown in FIGS. 2 to 4, the key cylinder 20 has a spring 24, a support plate 26, a key tail 28, and a key washer 30 sequentially formed through a groove 20 a formed at one end thereof. And the cap 32 is screwed to the end of the key cylinder 20.

In addition, the spring 33 and the stopper pin 34 are installed through the groove 20a of the key cylinder 20 to control the rotation angle of the key tail 28.

The present invention has the following effects as the spring 24 and the support plate 26 is newly configured in the key cylinder 20.

As shown in FIG. 4, the repulsive force of the spring 24 prevents the key tail 28 from sagging and is always fixed in the same direction as the axial direction of the key cylinder 20.

In addition, the support plate 26 supports the one end of the spring 24 and the end engaging plate 28a of the key tail 28 stably.

Accordingly, when installing the door lock, as shown in FIG. 5, the dead bolt assembly 100 is first screwed through the side of the door 200, and then the outer body 10 of the door lock from the outside and the inside of the door 200. And the inner body 300 is installed while occlusion, at this time when installing the outer body 10, the key tail 28 of the key cylinder 20 installed in the outer body 10 dead bolt assembly 100 When the key tail 28 is positioned in the same direction as the axial direction of the key cylinder 20 by the repulsive force of the spring 24 when inserted into the key groove 102 of the key tail 28 is exactly the key groove 102 By being guided to facilitate the assembly it is possible to improve the assembly.

As described above, in the present invention, when assembling the key tail of the key cylinder installed on the outer body to the key groove of the dead bolt assembly, the key tail is always located in the same direction as the axial direction of the key cylinder without sagging by the spring. It is easy to insert into the key groove can improve the assembly, this improvement in assembly is that the consumer who is not a professional to install the door lock, especially when purchasing and installing the door lock directly to have a reliability.

Claims (2)

A key cylinder installed on the outer body of the door lock and connected to the dead bolt assembly and the key tail for manual operation of the door lock. A spring is installed in the groove of the key cylinder to provide an elastic cushion to the key tail so that the key tail installed through the cap in the groove of the end of the key cylinder is always kept in the same direction without sagging with the axial direction of the key cylinder. Key door sag prevention structure of the digital door lock key cylinder, characterized in that the installation. The key tail sag prevention structure of a digital door lock key cylinder according to claim 1, further comprising a support plate for stably supporting the spring between the spring and the end catching plate of the key tail.