Patent Application
20110219832
1. Field of the Invention
The present invention relates to a door lock assembly, and more particularly to a door lock assembly including an adjustable shaft mechanism adjustable to different length for adjustably attaching or mounting or securing the door lock assembly onto the door panels of different thicknesses.
2. Description of the Prior Art
Typical door lock mechanisms or assemblies comprise a lock casing device attached or mounted to one side of the door panel, a lock device attached or mounted to the other side or the opposite side of the door panel and having a dead bolt extended out of the lock device for engaging with a door frame, a locking mechanism attached or mounted to the lock casing device for selectively locking the door panel to the door frame, and an actuation unit also attached or mounted to the lock casing device for selectively actuating or operating the dead bolt to lock or to release the door panel.
For example, U.S. Pat. No. 7,181,940 to Lin discloses one of the typical door lock mechanisms or assemblies and was developed by the present applicant and also comprising a lock device attached or mounted to one side of the door panel and having a dead bolt extended out of the lock device for engaging with a door frame, a lock casing device attached or mounted to the other side or the opposite side of the door panel and having a locking mechanism for selectively locking the door panel to the door frame, and having an actuation unit for selectively actuating or operating the dead bolt to lock or to release the door panel.
The actuation unit and the locking mechanism are required to be coupled to the lock device with a shaft for allowing the dead bolt of the lock device to be actuated or operated by the actuation unit and/or the locking mechanism.
However, the shaft includes a predetermined or fixed length that may not be adjusted to different lengths, such that the shaft of the typical door lock mechanisms or assemblies may not be attached or mounted or secured to the door panels of different thicknesses, and such that the shaft may only be fitted or attached or mounted or secured to the door panel that includes a predetermined or fixed thickness only.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages of the conventional door lock mechanisms or assemblies.
The primary objective of the present invention is to provide a door lock assembly including an adjustable shaft mechanism adjustable to different length for adjustably attaching or mounting or securing the door lock assembly onto the door panels of different thicknesses.
In accordance with one aspect of the invention, there is provided a door lock assembly comprising a door panel including a first side and a second side, a lock casing device attached to the first side of the door panel, a door lock device attached to the second side of the door panel and including a dead bolt extendible out of the door lock device for selectively engaging with a door frame, a core device pivotally mounted to the lock casing device, an actuation device attached to the lock casing device and coupled to the core device for actuating the core device to operate the dead bolt, an adjustable shaft mechanism including a housing laterally engaged through the door panel and coupled to the core device and rotated in concert with the core device, the housing including a chamber formed therein and including a number of orifices formed therein and communicative with the chamber of the housing, and including a channel formed therein and communicative with the chamber of the housing, a shank slidably engaged in the chamber of the housing and including a free end portion extendible out of the housing for engaging with the door lock device, and a spring-biased projection device attached to the shank and including a spring-biased detent for selectively engaging with either of the orifices of the housing and for adjustably anchoring the shank to the housing at the selected or predetermined positions and thus for adjustably attaching or mounting or securing the adjustable shaft mechanism and the lock casing device and the door lock device to the door panel.
The shank includes an aperture formed therein for receiving the spring-biased detent of the spring-biased projection device. For example, the shank includes a compartment formed therein and communicative with the aperture of the shank and having an inner diameter greater than that of the aperture of the shank, and the spring-biased projection device includes a casing engaged with the compartment of the shank and extended out of the shank and slidably engaged with the channel of the housing, and the casing includes a space formed therein for receiving the spring-biased detent and a spring member, and the detent and the spring member are received or engaged in the aperture of the shank and partially extended out of the shank for engaging with either of the orifices of the housing.
Further objectives and advantages of the present invention will become apparent from a careful reading of the detailed description provided hereinbelow, with appropriate reference to the accompanying drawings.
Referring to the drawings, and initially to
The lock casing device 10 further includes a core device 15 pivotally or rotatably attached or mounted or coupled to the lock casing device 10, and coupled to the door lock device 20, such as coupled to the dead bolt 21 of the door lock device 20 with an adjustable shaft mechanism 3 in accordance with the present invention, in which the core device 15 is rotatable or actuatable or operatable by the locking mechanism 11 and/or the actuation device 12 in order to selectively rotate or actuate or operate the adjustable shaft mechanism 3 and so as to selectively actuate or operate the dead bolt 21 to engage with the door frame 83, and to lock or to release the door panel 8.
The above-described structure including the lock casing device 10, the locking mechanism 11, the actuation device 12, the core device 15, and the dead bolt 21 of the door lock device 20 is typical and will not be described in further details, and one example of the above-described structure has been disclosed in the present applicant's prior U.S. Pat. No. 7,181,940 to Lin which is taken as a reference for the present invention. The present invention is to provide an adjustable shaft mechanism 3 which is adjustable to different lengths (
As shown in
The adjustable shaft mechanism 3 further includes a shank 36 slidably engaged within the chamber 32 of the housing 30 and having an outer or free end portion 39 extendible out of the housing 30, and having an aperture 37 laterally formed therein, and having an enlarged compartment 38 formed therein and communicative with the aperture 37 of the shank 36, in which the inner diameter of the compartment 38 of the shank 36 is greater than that of the aperture 37 of the shank 36 for receiving a spring-biased projection device 50. For example, the spring-biased projection device 50 includes a casing 51 engaged within the greater compartment 38 of the shank 36 or attached to the shank 36 and extended out of the shank 36 and slidably engaged with the channel 35 of the housing 30, and the casing 51 includes a space 52 formed therein for receiving a spring-biased ball or detent 53 and a spring member 54, in which the detent 53 and the spring member 54 are also received or engaged within the aperture 37 of the shank 36 and partially extended out of the shank 36 for engaging with either of the orifices 34 of the housing 30.
In operation, as shown in
Accordingly, the door lock assembly in accordance with the present invention includes an adjustable shaft mechanism adjustable to different lengths for selectively and adjustably attaching or mounting or securing the door lock assembly onto the door panels of different thicknesses.
Although this invention has been described with a certain degree of particularity, it is to be understood that the present disclosure has been made by way of example only and that numerous changes in the detailed construction and the combination and arrangement of parts may be resorted to without departing from the spirit and scope of the invention as hereinafter claimed.
