The invention relates to the field of locks and in particular to a device for locking a sliding door.
Sliding patio doors are commonplace throughout the world. They consume less space than swing doors as their panels slide alongside one-another when opening or closing. Swing doors, on the other hand, swing through an arc requiring the area to be clear for opening or closing.
They are usually glazed and because large panels of glass provide the best views, sliding patio doors are often on the view side of homes, buildings or rental suites, providing access to patios, pools, back lanes, walkways, and beaches. Sliding doors are made up of a variety of materials, for example, glass panels, framed in metal, wood, vinyl, and/or fiberglass. Originally they may have been made of wood but most of the current older sliding door frames are now made from aluminum with relatively narrow stiles (side frame of panels). More recently, vinyl, fiberglass and some wood versions are offered as premium options and sell at a very popular rate. The vinyl/wood/fiberglass varieties tend to be made with wider stiles and therefore, offer more space for latches and locks and are typically made with latches mortised into the edge of the style. Locking occurs by providing lever operation of the mortise latch which is on the inside of the door stile.
Typically, sliding doors have two panels with one fixed in place while the other slides back and forth alongside the fixed panel on either the inside or outside of the fixed panel. Both panels are typically contained in a fixed outer frame of the same material as the panel frames. The sliding door unit is locked via a latching mechanism on the sliding panel that engages a hook, catch or hole in or fixed to the outer frame of the unit. This connection point on the frame may be enhanced via longer screw(s) into the framing members of the wall after installation. Locking is achieved by typically providing operation of the latching mechanism from only inside of the door. Other pins, buttons and sticks are often added to further secure the active panel to the outer frame or inactive panel. Some doors do have exterman keys but the security of such is limited to the weakest link in that chain of attachment and that is often the hook itself the hook to catch attachment or the catch itself.
When sliding doors are installed at ground level or on a low patio level, it would sometimes be useful to use such sliding doors as entrance or exit doors to permit true access to the pool, beach, walkway, car etc. Unfortunately most such sliding doors do not have a lock which would grant access from both the inside and outside.
The majority of existing installed aluminum patio doors simply do not have secure locks. One common type of lock for aluminum patio doors is a simple mechanism bolted through the stile of the active panel. On the outside it adds a surface mounted handle/pull to assist with moving of the door. On the inside it offers a surface mounted handle including lever on a pivot. On the opposite side of the pivot from the lever is typically a hook which, when levered, engages some form of catch or hole mounted on or in the outer fixed frame of the whole sliding door assembly. Typical locks can be thwarted by circularly jiggling the door, by sliding a blade up the side of the door, and by brute force by prying or by levering the whole door off and out of place.
There are many after-market devices which are available which are typically added along the bottom or top of the active panel to secure it to the base of the outer fixed frame. These vary in the method of their operation; for example, some are pins which require the user to bend down to engage or disengage while others are foot operated with a little button to lock and another to unlock. These aftermarket devices are at times difficult to engage/disengage, become jammed and are not easily operated. As a result they present a barrier to exit in the case of a fire or emergency and thus a danger.
There is a growing adoption of keyless entry via a keypad for normal swing doors. Homeowners can install a special device including a deadbolt which fits in standard doors with the same standard milling of holes and slots. These locks are not locked and unlocked via a key but via a special code via keypad. They typically can have several key codes programmed into them or removed by the owner via a keypad and a ‘master code’ for setup. These keypads offer considerable convenience as users do not have to carry or remember keys. They could be particularly appealing for people with children who might come and go without keys. Also growing but very leading edge is wireless entry, for example, an RFID fob or by using a smartphone via Bluetooth to provide the verification/key. These products are very new, but have very little market traction so far.
Accordingly, a need exists for an improved patio door locking device that overcomes the gap in today's marketplace. For either the aluminum type of sliding doors and for the vinyl type of doors with existing mortise latches in the stile of the active panel, the current invention provides an easy and convenient two way access via an external lever to lock and unlock the door from the exterior. The door gets locked by disengaging the exterior lever when the unit is latched. As a result, an authorized person can enter or exit freely while unauthorized cannot.
Also, security is increased via a pin-into-pin latching mechanism. This device is stronger and more tamper resistant than the typical lock on aluminum doors which is the lever-pivot-hook to latch type. The mortise latches typical on vinyl-type doors offer better latch security, than the latches typically found on aluminum framed units, but these mortise latches cannot be easily added to aluminum doors which typically have much narrower (too narrow) stile dimension. The current invention takes up less space longitudinally (in the direction of the panel movement) enabling it to fit better into narrow stiles. Even if mortise latches can fit they are much more difficult to install as it takes fairly precise machining of the edge of the door in complex shape(s) to take a mortise. Other objects of the invention will be apparent from the description that follows.
According to the present invention there is provided a sliding door locking device, where the sliding door panel has a frame that engages with a door jamb or a second sliding door frame. The device may include a locking body connected to the door jamb or second sliding door frame. The locking body may be in linear alignment with a path of the first sliding door and the first sliding door frame may be configured to receive the locking body. A latching body may be connected to the first sliding door frame and operable to engage with the locking body. The device may further include a controller, such as a lever, connected to the first sliding door frame and operable to control the latching body towards and away from the locking body to lock and unlock with the locking body. The controller may be inoperable until the first sliding door frame is engaged with the door jamb or with the second sliding door frame.
The locking body and the latching body may be in perpendicular alignment with one-another in the locked position. Furthermore, the locking body may be configured for insertion into the first sliding door frame and the first sliding door frame may be configured to receive the locking body within the first sliding door frame. As such, the locking body and the latching body may lock to one-another inside of the first door frame's stile.
The latching body may be a clip configured to engage over the locking body. Alternatively, the locking body may include a through-bore and the latching body may be configured to pass through the through-bore.
The locking body may be a locking plate and a locking pin perpendicularly disposed thereon. As such, the locking plate may be configured for flush attachment to the door jamb or to the second sliding door frame. Alternatively, the locking body may be a frame pin and a locking pin longitudinally disposed thereon. As such, the frame pin may be configured for attachment into the door jamb or into the second sliding door. Still in the alternative, the locking body may be a cross bar and a locking pin perpendicularly disposed thereon. As such, the cross bar may be connected across and through the door jamb or second sliding door frame.
According to another embodiment of the present invention there is provided a sliding door locking device. Here, the sliding door may have a frame that engages with a door jamb or a second sliding door frame. The first frame may have an interior space exposure and an exterior space exposure. The first frame may include a latching body that engages with a corresponding locking body on the door jamb or second sliding door jamb. The device may include a first controller connected to the interior space exposure of the first door frame and operable to control the latching body. A second controller may be connected to the exterior space exposure of the first door frame and operable to control the latching body. The controllers may be, for example, levers. The device may also include bypass means connected to the first sliding door frame and in mechanical communication with the second controller and with the latching body. Authentication means may be provided in communication with the bypass means, wherein the bypass means renders the second controller inoperable until the authentication means verifies a user.
The bypass means may be a jammer, such as a tumbler, which prevents the second controller from operating the latching body until the authentication means verifies a user. Alternatively, the bypass means may be a clutch that disengages the mechanical communication between the second controller and the latching body until the authentication means verifies a user.
The authentication means may be a key. When the key is activated the jammer or clutch renders the second controller operable to communicate with the latching body.
The clutch may engage the mechanical communication between the second controller and the latching body when the authentication means verifies a user and when the second controller is in alignment with the first controller.
The bypass device may be in mechanical communication with the second controller via a bypass body and said bypass body passes through a control arm for a mortise latch, wherein the control arm passes through the keyway hole in a mortise latch.
According to yet another embodiment of the present invention there is provided a sliding door locking device. The sliding door may have a frame that engages with a door jamb or a second sliding door frame. The first frame may have an interior space exposure and an exterior space exposure. The device may include a locking body connected to the door jamb or second sliding door frame. The locking body may be in linear alignment with a path of the first sliding door and the first sliding door frame may be configured to receive the locking body. A latching body may be connected to the first sliding door frame and operable to engage with the locking body. The device may include a first controller connected to the interior space exposure of the first door frame and operable to control the latching body. A second controller may be connected to the exterior space exposure of the first door frame and operable to control the latching body. The controllers may be, for example, levers. The device may also include bypass means connected to the first sliding door frame and in mechanical communication with the second controller and with the latching body. Authentication means may be provided in communication with the bypass means, wherein the bypass means renders the second controller inoperable until the authentication means verifies a user.
The controllers may be inoperable until the first sliding door frame is engaged with the door jamb or with the second sliding door frame.
The locking body and the latching body may be in perpendicular alignment with one-another in the locked position. Furthermore, the locking body may be configured for insertion into the first sliding door frame and the first sliding door frame may be configured to receive the locking body within the first sliding door frame. As such, the locking body and the latching body may lock to one-another inside of the first door frame.
The latching body may be a clip configured to engage over the locking body. Alternatively, the locking body may include a through-bore and the latching body may be configured to pass through the through-bore.
The locking body may be a locking plate and a locking pin perpendicularly disposed thereon. As such, the locking plate may be configured for flush attachment to the door jamb or to the second sliding door frame. Alternatively, the locking body may be a frame pin and a locking pin longitudinally disposed thereon. As such, the frame pin may be configured for attachment into the door jamb or into the second sliding door. Still in the alternative, the locking body may be a cross bar and a locking pin perpendicularly disposed thereon. As such, the cross bar may be connected across and through the door jamb or second sliding door frame.
The bypass means may be a jammer, such as a tumbler, which prevents the second controller from operating the latching body until the authentication means verifies a user. Alternatively, the bypass means may be a clutch that disengages the mechanical communication between the second controller and the latching body until the authentication means verifies a user.
The authentication means may be a key. When the key is activated the jammer or clutch renders the second controller operable to communicate with the latching body.
The clutch may engage the mechanical communication between the second controller and the latching body when the authentication means verifies a user and when the second controller is in alignment with the first controller.
Other aspects of the invention will be appreciated by reference to the detailed description of the preferred embodiment and to the claims that follow.
The preferred embodiment of the invention will be described by reference to the drawings thereof in which:
Referring to
Device 10 includes a controller connected to the first sliding door frame 14 and operable to control the latching body 18 towards and away from the locking body 16 to lock and unlock with the locking body. As depicted, the controller is a standard lever 19 connected inside a standard handle housing 17, but as those skilled in the art will appreciate, any controller will suffice, such as a switch or knob. To prevent possible damage, lever 19 is inoperable until the first sliding door frame 14 is engaged with the door jamb or with the second sliding door frame.
In operation, locking body 16 and latching body 18 will be in perpendicular alignment with one-another in the locked position. Furthermore, locking body 16 will be configured for insertion into the first sliding door frame 14. First sliding door frame 14 will be configured to receive locking body 16 within the first sliding door frame. As depicted, sliding door frame 14 includes a hole 20 drilled into a receiving side to receive locking body 16. As such, locking body 16 and latching body 18 will lock to one-another inside of the first door frame 14.
Latching body 18 may be a clip configured to engage over locking body 16. Alternatively, and as depicted, locking body 16 includes a through-bore 22. Here, latching body 16 is configured to pass through through-bore 22.
As best depicted in
Referring back to
Traditional sliding doors have a frame that engages with a door jamb or a second sliding door frame. The first frame has an interior space exposure and an exterior space exposure. The first frame includes a latching body that engages with a corresponding locking body on the door jamb or second sliding door jamb. In the preferred, embodiment, the locking body and latching body would incorporate locking body 16 and latching body 18 from above. However, the present invention envisions the use of a typical hook and catch system of some existing sliding doors as well with an exterior controller or lever. Referring to
Bypass means may be a jammer, such as a conventional key tumbler, which prevents second controller 108 from operating latching body 106 until the authentication means verifies a user.
Alternatively, the bypass means may be a clutch 107 that disengages the mechanical communication between second controller 108 and latching body 106 until the authentication means verifies a user. As depicted, controller lever 102 is always mechanically communicating with the latching body 106. When the latch is a third party mortise latch the communication is via a lever shaft 110 which passes from inside lever 102 outwards towards the exterior side of the door frame/stile 104. Along the way it engages and provides rotational force to operate the mortised latch.
When the latching mechanism includes a latching pin 106 (akin to latching pin 18 from above) then the rotational force from lever 102 is transmitted through gear 112 to sleeve gear 114 of a rotating sleeve 116 which, through that mechanism, activates and deactivates latch pin 106. Rotating sleeve 116 may sit in an inside bracket 115 and include a flanged bushing 119.
As best depicted in
Controller lever 108, which is located in the outside of frame 104, is engaged/disengaged via clutch 107. Lever 108 is also connected to a lever plate 105 which attaches to exterior handle 109. Upon authentication, a motor 120 (in a motorized embodiment and is powered by a battery—not depicted), located inside interior base 101, rotates a specific number of turns. It is coupled to (via motor shaft coupler 123) and in line with a clutch shaft 124. Clutch shaft 124 passes from the inside of panel 104 to the outside of the panel, traveling through the center of lever shaft 110 so that, in the case of a 3rd party mortise latch 300 they both, concentrically pass through the same control keyway. Clutch shaft 124 is mostly a round rod that extends outwardly to approximately the outside face of door frame/stile 104 where a bladed end inserts into a slot on the inner end of a clutch drive shaft 126. When motor 120 turns clutch shaft 124, it turns clutch drive shaft 126. Clutch drive shaft 126 is a threaded rod a little bigger in diameter than clutch shaft 124 and is much like a bolt which threads inside the inward end of a clutch cup 128. Cutch cup 128 may be inserted into to a flanged bushing 129 which connects to exterior base 131. When rotated, clutch drive shaft 126 threadedly moves inwards and outwards with respective turns of motor 120. To engage clutch 107 clutch drive shaft 126 pushes a spring 130 which in turn pushes a clutch disc 132 outwardly, creating pressure from the clutch disc onto the inner face of exterior lever 108. Clutch disc 132 engages with lever 108 when pins 200, or other projection, in one engage with holes 202 in the other.
Since levers have only a limited rotational range, it is important to ensure that exterior lever 108 is in the correct orientation when it is engaged. This is done by spring loading the force of clutch drive shaft 126 onto clutch disc 132 even if the pins 200 and holes 202 are not yet engaged so that even once motor 120 has stopped its rotation and thus the Cclutch drive shaft has rotated and moved outwardly towards the clutch disc, spring 130 maintains plate/lever pressure. If they were not properly aligned during clutch drive shaft's 126 travel, the compression of spring 130 remains, keeping clutch disc 132 pressed against the misaligned lever 108. When operation is attempted, exterior lever 108 is rotated, bringing them into alignment and engagement occurs.
Disengagement of clutch 107 occurs by turns of motor 120 which turns clutch shaft 124 which turns clutch drive shaft 126 which retracts it towards the inside and away from exterior lever 108. Clutch driveshaft 126 has a narrow spindle which projects outwardly through spring 130 and through clutch disc 132 where it has a groove on its spindle which receives an e-clip 134 which does not fit through a hole 203 in the Cclutch disc, so it enables clutch drive shaft 126 to pull the Cclutch disc back with it, away from lever 108 to disengage the clutch 107 and the exterior lever 108.
Clutch disc 132 is shaped, such as a square, and fits neatly inside clutch cup 128 of a similar slightly larger square shaped cuphole 205. That lets clutch disc 132 to move inwardly and outwardly, but not to turn due to their matching close fit shapes. If clutch 107 is engaged, then when lever 108 turns, clutch disc 132 turns, turning clutch cup 128. The inner end of clutch cup 128 engages with lever shaft 110 to provide rotation to operate the latch whether it be the 3rd party mortise latch 300 or a Pin-in-Pin latch 106.
In the case of a third party mortise latch 300 rotating standard lever shaft 301 transfers force via its close fit shape which travels through a control keyway in the mortise. In the case of the Pin in Pin latch, force is transferred from the rotating lever shaft 110 to the inner lever gear 112 and to the Pin in Pin latch 106.
The authentication means is a key. As those skilled in the art will appreciate, the key can be a physical key, a key pad 140 (as best depicted in
While embodiments of the invention have been described and illustrated, such embodiments should be considered illustrative of the invention only. The invention may include variants not described or illustrated herein in detail. Thus, the embodiments described and illustrated herein should not be considered to limit the invention as construed in accordance with the accompanying claims.
Number | Date | Country | Kind |
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2876791 | Jan 2015 | CA | national |