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The device for childproofing a door lock is a device that fits on a standard lockset and prevents a lever or doorknob from turning when the device is engaged. The childproof door lock includes a substantially rectangular base plate and a circular disk that mounts atop the base. A sliding plate mount

The device for childproofing a door lock is a device that fits on a standard lockset and prevents a lever or doorknob from turning when the device is engaged. The childproof door lock includes a substantially rectangular base plate and a circular disk that mounts atop the base. A sliding plate mounted on the base has a cylindrical locking post that engages a notch on the circular disk and prevents it from turning. The sliding plate may be spring-biased to hold the locking post in the notch. A lever may be attached to the sliding plate to disengage the locking post from the notch and allow the circular disk to turn freely.

대표청구항 ▼

1. A device for childproofing a door lock assembly, wherein the door lock assembly includes a central shaft and a pair of side shafts, comprising: a substantially rectangular base member having an upper surface, a central aperture formed therethrough and a pair of notched sides adapted for mounting

1. A device for childproofing a door lock assembly, wherein the door lock assembly includes a central shaft and a pair of side shafts, comprising: a substantially rectangular base member having an upper surface, a central aperture formed therethrough and a pair of notched sides adapted for mounting on the side shafts of a door lock assembly;a first cylindrical post extending from the upper surface of the base member;a sliding plate member slidably mounted on the base member, the sliding plate member having an upper surface and a lower surface;a second cylindrical post extending from the upper surface of the sliding plate member;a circular disk member rotatably mounted on the upper surface of the base member, the disk member having a central aperture formed therethrough and being dimensioned to receive the central shaft of the door lock assembly, an arcuate guide channel and an arcuate locking channel opposite the guide channel, the first cylindrical post extending through and being slidable in the arcuate guide channel, the second cylindrical post extending through and being slidable in the locking channel, the locking channel having a central notch for releasably receiving the second cylindrical post to limit slidable movement in the locking channel and prevent complete rotation of the central shaft of the door lock assembly; andmeans for selectively disengaging the second cylindrical post from the central notch to allow unlimited slidable movement in the locking channel to permit complete rotation of the central shaft of the door lock assembly to open the door. 2. The device for childproofing a door lock as recited in claim 1, wherein the central aperture formed through the substantially rectangular base member is substantially circular. 3. The device for childproofing a door lock as recited in claim 1, wherein said substantially rectangular base member has a slot formed therein adjacent the central aperture, the slot being positioned diametrically opposite said first cylindrical post with respect to the central aperture. 4. The device for childproofing a door lock as recited in claim 3, further comprising a pin extending from the lower surface of said sliding plate member, the pin being slidably in the slot defined in said base member. 5. The device for childproofing a door lock as recited in claim 4, further comprising at least one bracket mounted on the upper surface of said base member, the at least one bracket slidably retaining said sliding plate member to said base member. 6. The device for childproofing a door lock as recited in claim 5, wherein said sliding plate member is spring-biased on said base member. 7. The device for childproofing a door lock as recited in claim 6, wherein the central aperture of said circular disk member is substantially keyhole-shaped. 8. The device for childproofing a door lock as recited in claim 7, wherein the arcuate guide channel and the arcuate locking channel each are substantially semicircular. 9. The device for childproofing a door lock as recited in claim 8, wherein the arcuate guide channel and the arcuate locking channel are diametrically opposed on opposite sides of the central aperture formed through the circular disk member. 10. The device for childproofing a door lock as recited in claim 9, further comprising means for slidably securing the first cylindrical post within the arcuate guide channel. 11. The device for childproofing a door lock as recited in claim 9, further comprising a first release lever having opposed fixed and free ends, the fixed end thereof being pivotally attached to the second cylindrical post, whereby the user may grip the free end thereof and slide the first release lever to selectively disengage the second cylindrical post from the central notch. 12. The device for childproofing a door lock as recited in claim 11, further comprising a second release lever having opposed fixed and free ends, the fixed end thereof being pivotally attached to the pin. 13. The device for childproofing a door lock as recited in claim 12, further comprising means for respectively securing the first and second release levers on the second cylindrical post and the pin. 14. A device for childproofing a door lock assembly, wherein the door lock assembly includes a central shaft and a pair of side shafts, comprising: a substantially rectangular base member having a central aperture formed therethrough, an upper surface, and a pair of notched sides adapted for mounting on the side shafts of a door lock assembly;a first cylindrical post extending from the upper surface of the base member;a sliding plate member slidably mounted on the base member, the sliding plate member having an upper surface;a second cylindrical post extending from the upper surface of the sliding plate member;a circular disk member rotatably mounted on the upper surface of the substantially rectangular base member, the disk member having a central aperture formed therethrough and being dimensioned to receive the central shaft of the door lock assembly, an arcuate guide channel, and an arcuate locking channel formed therethrough, the first cylindrical post being slidable in the arcuate guide channel, the second cylindrical post being slidable in the locking channel, the locking channel having a central notch for releasably receiving the second cylindrical post to limit slidable movement in the locking channel and prevent complete rotation of the central shaft of the door lock assembly; anda first release lever having opposed fixed and free ends, the fixed end thereof pivotally attached to the second cylindrical post, whereby the user may grip the free end thereof and slide the first release lever to selectively disengage the second cylindrical post from the central notch. 15. The device for childproofing a door lock as recited in claim 14, wherein the base member has a slot defined therein adjacent the central aperture, the slot being positioned diametrically opposite the first cylindrical post. 16. The device for childproofing a door lock as recited in claim 15, further comprising a pin extending from the lower surface of said sliding plate member, the pin being slidable in the slot defined in the base member. 17. The device for childproofing a door lock as recited in claim 16, further comprising a second release lever having opposed fixed and free ends, the fixed end being pivotally attached to the pin. 18. The device for childproofing a door lock as recited in claim 17, further comprising means for respectively attaching the first and second release levers to the second cylindrical post and the pin, respectively. 19. The device for childproofing a door lock as recited in claim 18, wherein said sliding plate member is spring-biased with respect to substantially rectangular base member. 20. The device for childproofing a door lock as recited in claim 19, wherein the arcuate guide channel and the arcuate locking channel are each substantially semicircular.