KR940007995Y1 - Safty door lock and key - Google Patents

Abstract

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Description

Safety door lock and key

1a is a partially exploded perspective view of a door lock according to the present invention.

Figure 1b is a top view of the key used for the door lock (LOCK) according to the present invention.

Figure 1c is a bottom view of the key used in the door lock (LOCK) according to the present invention.

Figure 2 is a cross-sectional view of the main part of the door lock (LOCK) according to the present invention.

3 is an enlarged cross-sectional view of the portion A of FIG.

Figure 4 is an enlarged cross-sectional view of the key lock state of the present invention to the door lock according to the present invention.

Figure 5 is an enlarged cross-sectional view of a conventional wire inserted into the door lock according to the present invention.

6 is a sectional view taken along the line "B-B" in FIG.

7 is a cross-sectional view taken along the line “B-B” of FIG. 4.

* Explanation of symbols for main parts of the drawings

10: rotating member 11, 11 ': pin ball

12: fixing member 14: key passage

15, 15a: Upper surface 15 ', 15a': Lower surface

18: locking piece 18 ': support rod

18a: Key back upper groove 18b: Key back lower groove

20: spring 24: tall

27: door lock cover 28: tangential

The present invention relates to a safety door lock with a key passage as a bent portion so that it cannot be opened with a metal universal key or a wire, and a flexible key having key grooves on the upper and lower sides that can be used for the door lock. In the narrow side part of the door, the flexible key with the key groove needed only on the upper and lower sides without the long press-indentation part is supported by the spring on the curved key passage of the door lock so as to open the door lock by pushing the protruding locking piece. One safety door lock and key.

In the conventional door lock, the key passage is formed in a straight line, so that even if a very complicated and various locking device is installed in the key passage, there is a closed end that the door lock is easily opened by a small tool such as a wire which is not suitable for the key passage.

In addition, even if you are not an expert, you can easily open many times using multiple wires.

Therefore, the present invention is to compensate for the shortcomings of the conventional door lock as described above, and the inner lock of the door lock (LOCK) key bent and a plurality of lock pins protrude therein while vertically touching the spring on the upper and lower surfaces of the key passage. It is a flexible material that can be bent at the same time as it is formed, and it has a straight shape with no indentation and convexity on the narrow side, and the key surface groove is concave only in the wide upper and lower planes. It is about door lock and key.

Hereinafter, the door lock and the key according to the present invention will be described in detail with reference to the accompanying drawings.

In the door lock composed of the fixing member 12 and the rotating member 10 in the door lock cover 27, the key passage 14 penetrated through the rotating member 10 is formed to be bent up and down and the fixing member 12 ) And penetrating the inclined surface 15b or the horizontal surface 15c adjacent to the upper curved surface 15, 15a or the lower curved surface 15 ′, 15a ′ of the key passage 14 while being perpendicular to the rotating member 10. A plurality of locking pins 18 and support rods 18 'are embedded in the pinholes 11 and 11' in a row so that the support rods 18 'can be held in the fixing member 12 by the stop springs 20. And the locking pin 18 is supported by the locking projection (18A) formed in the lower pin hole 11 so that only the small extension portion (18B) of the locking pin 18 protrudes to the upper and lower surfaces of the key passage (14) And a key formed by inserting the key 24 into the upper and lower surfaces of the key 24, the support rod 18 'when the upper and lower grooves 18a and 18b and the extension portion 18B of the locking pin coincide with each other. ) Top (29) is fixed When the length of the supporting rod 18 'and the locking pin 18 is made to match the tangent 28 of the ash 12 and the rotating member 10, and the key 24 matches it with the locking pin 18, The upper end 29 of the locking pin 18 is aligned with the locking pin extension 18B on the upper and lower surfaces of the key so that the upper end 29 of the locking pin 18 can be aligned with the tangent 28 of the fixing member 12 and the rotating member 10. If it is a key, it is composed of having upper and lower grooves 18a and 18b.

Here, the material of the key 24 may be made of plastic or rubber such as polyurethane, which may be bent along the curved key passage 14 while being rigid. Reference numeral 2 denotes a handle, 6 a door lock body, and 26 a wire.

Referring to the effect of the present invention safety door lock and key configured as described above are as follows. First, when the door lock is applied to any conventional door lock in the present invention, referring to FIG. 5, the curved key passage 14 when the wire 26 is inserted into the key passage 14 of the present invention is described. The wire that enters into touches only the upper curved surface 15 of the key passage 14 by its elasticity, and then bends continuously to enter the lower curved surface 15 'without touching the lower curved surface 15'. Since the wires do not touch the other upper curved surface 15a, the wire pushes the locking pin 18 and the supporting rod 18 'as the wire does not touch any of the extensions 18B of the locking pin 18 as shown in the drawing. Since the upper end 29 of the supporting rod cannot be matched with the tangent 28 of the fixing member 12 and the rotating member 10, the rotating member 10 cannot be rotated, and thus the door lock is not opened even if the wire is moved. do.

On the other hand, as shown in Figs. 1b and c of the key passage 14 of the door lock of the present invention, the upper and lower grooves 18a and 18b are provided when the upper and lower grooves 18a and 18b of the key 24 are keys. When the present invention key 24 is inserted, as shown in FIGS. 4 and 7, the flexible key 24 pushes the locking pin 18 and the support rod 18 'which are supported by the spring in order. When the end of the extension portion 18B is caught by the upper and lower grooves 18a and 18b on the rear surface, the upper end 29 of the support rod 18 'on the upper locking pin 18 is fixed to the fixing member 12 and the rotating member 10. The door lock according to the present invention along the handle (2) is in line with the tangential line (28) of the circumference and eventually matches the circumference of the pivot member (10). It must be said that the key according to the present invention is a very safe door lock that can be released.

Claims (1)

In the door lock composed of the fixing member 12 and the rotating member 10 in the door lock cover 27, the key passage 14 penetrated through the rotating member 10 is formed to be bent up and down and the fixing member 12 ) And penetrating the inclined surface 15b or the horizontal surface 15c adjacent to the upper curved surface 15, 15a or the lower curved surface 15 ′, 15a ′ of the key passage 14 while being perpendicular to the rotating member 10. A plurality of locking pins 18 and support rods 18 'are embedded in the pinholes 11 and 11' in a row so that the support rods 18 'can be held in the fixing member 12 by the stop springs 20. And the locking pin 18 is supported by the locking projection (18A) formed in the lower pin hole 11 so that only the small extension portion (18B) of the locking pin 18 protrudes to the upper and lower surfaces of the key passage (14) And a key formed by inserting the key 24 into the upper and lower surfaces of the key 24, the support rod 18 'when the upper and lower grooves 18a and 18b and the extension portion 18B of the locking pin coincide with each other. ) Top (29) is fixed When the length of the supporting rod 18 'and the locking pin 18 is made to match the tangent 28 of the ash 12 and the rotating member 10, and the key 24 matches it with the locking pin 18, The upper and lower grooves of the locking pin 18 have upper and lower grooves 18a and 18b so that the upper and lower surfaces of the key can be aligned with the tangent 28 of the fixing member 12 and the rotating member 10. Safety door lock and key characterized by consisting of.