WO2018076052A1 - Ensemble poignée de porte - Google Patents

Ensemble poignée de porte Download PDF

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Publication number
WO2018076052A1
WO2018076052A1 PCT/AU2017/051167 AU2017051167W WO2018076052A1 WO 2018076052 A1 WO2018076052 A1 WO 2018076052A1 AU 2017051167 W AU2017051167 W AU 2017051167W WO 2018076052 A1 WO2018076052 A1 WO 2018076052A1
Authority
WO
WIPO (PCT)
Prior art keywords
door handle
user actuated
actuated element
door
handle assembly
Prior art date
Application number
PCT/AU2017/051167
Other languages
English (en)
Inventor
Troy Edgar WHITWORTH
Original Assignee
Whitworth Troy Edgar
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whitworth Troy Edgar filed Critical Whitworth Troy Edgar
Publication of WO2018076052A1 publication Critical patent/WO2018076052A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B65/00—Locks or fastenings for special use
    • E05B65/0014—Locks or fastenings for special use to prevent opening by children
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B55/00—Locks in which a sliding latch is used also as a locking bolt
    • E05B55/06—Locks in which a sliding latch is used also as a locking bolt the handle being disconnected

Definitions

  • the present invention relates to a door handle assembly, and in one example to a domestic door handle having a child safety feature to prevent a toddler or small child from opening the door.
  • a common feature of many prior art approaches is the use of an additional child lock attachment, that goes around the door handle, to prevent rotation of the lever by locking it in position.
  • an additional child lock attachment that goes around the door handle, to prevent rotation of the lever by locking it in position.
  • Many toddlers are able to defeat this type of child lock by using their body weight to force the handle past the lock.
  • Other prior art approaches are additional attachments that require inconvenient two hand operation by an adult. All of these additional child lock attachments are unattractive and often ruin the style of a nice home.
  • an aspect of the present invention seeks to provide a door handle assembly, including:
  • a door handle positioned on a first side of a door
  • a latch mechanism including a latch bolt movable between an extended latching position and a retracted release position
  • a user actuated element operable to move from a first position in which the latch bolt remains in the extended latching position to a second position that permits the latch bolt to move to the retracted release position upon simultaneous rotation of the door handle to thereby allow the door to be opened.
  • moving the user actuated element from the first position to the second position causes the door handle to become selectively engaged with the latch mechanism.
  • the user actuated element is operatively engaged with a spindle that is rotatably coupled to the latch mechanism so that rotation of the spindle causes the latch bolt to move between the extended latching position and the retracted release position.
  • the assembly further includes a spring cage rotatably coupled to the door handle, the spring cage including an aperture engageable with the user actuated element.
  • the assembly further includes a biasing member interposed between the user actuated element and the spring cage, the biasing member configured to urge the user actuated element away from the spring cage so that in the first position the user actuated element is disengaged from the aperture in the spring cage.
  • the biasing member upon user actuation of the user actuated element, the biasing member is compressed and the user actuated element moves axially from the first position to the second position in which the user actuated element engages in the aperture of the spring cage.
  • simultaneous rotation of the door handle and actuation of the user actuated element causes the spring cage to rotate which in turn causes the user actuated element and spindle to rotate which causes the latch bolt to move to the retracted release position allowing the door to be opened.
  • the user actuated element includes a first portion rotatably coupled to a second portion.
  • the first portion is permanently engaged with a locking stem, the first portion including a turn snib operable by a user to rotate the locking stem causing the door to be selectively locked.
  • the first portion further includes a hollow cylindrical shaft for receiving the locking stem and the second portion includes a hollow square shaft for slidable engagement over the spindle.
  • the aperture in the spring cage is a square hole for slidably engaging over the square shaft of the user actuated element.
  • the user actuated element includes a radial flange between the first portion and the second portion, the radial flange providing a contact surface for the biasing member.
  • the user actuated element is selectively engaged with a spindle via a coupling element, the spindle being rotatably coupled to the latch mechanism so that rotation of the spindle causes the latch bolt to move between the extended latching position and the retracted release position.
  • the assembly further includes a spring cage rotatably coupled to the door handle, the spring cage including an aperture configured to permit the coupling element to rotate freely within it.
  • the aperture is a circular hole.
  • the assembly further includes a biasing member interposed between the user actuated element and the coupling element, the biasing member configured to urge the user actuated element away from the coupling element so that in the first position the user actuated element is disengaged from the coupling element.
  • the biasing member upon user actuation of the user actuated element, the biasing member is compressed and the user actuated element moves axially from the first position to the second position in which the user actuated element engages with the coupling element.
  • the user actuated element engages an internal body portion of the door handle so that rotation of the door handle causes the user actuated element to rotate which in turn causes the spindle to rotate via the coupling element which causes the latch bolt to move to the retracted release position allowing the door to be opened.
  • the user actuated element includes a first shaft portion having a first flange with flat side portions configured to engage with corresponding flat sections located inside the internal body portion of the door handle when the user actuated element moves from the first position to the second position.
  • the user actuated element is permanently engaged with a locking stem, the user actuated element including a turn snib operable by a user to rotate the locking stem causing the door to be selectively locked.
  • the flange of the first shaft portion of the user actuated element is free to rotate within the internal body portion of the door handle when the user actuated element is in the first position.
  • the user actuated element further includes a second shaft portion and a third shaft portion, the second shaft portion being larger in width than the third shaft portion and configured for slidable engagement within the coupling element.
  • the third shaft portion is located within the coupling element so as to align the user actuated element with the coupling element; and, b) in the second position, the second shaft portion is located within the coupling element so as to engage the user actuated element with the coupling element.
  • the second shaft portion has a square section and the coupling element defines a square opening for slidably receiving the second shaft portion therein upon actuation of the user actuated element.
  • the third shaft portion has a circular section which is able to rotate freely within the square opening of the coupling element when the user actuated element is in the first position.
  • the user actuated element further includes a second flange disposed between the first and second shaft portions and the coupling element includes a ring or flange disposed proximate a distal end thereof, and wherein the biasing element is interposed between the second flange of the user actuated element and the ring or flange around the coupling element.
  • functionality of the user actuated element is able to be selectively disabled to enable standard operation of the door handle.
  • the user actuated element is configured so that it remains engaged with the coupling element in a released position.
  • the coupling element includes a hollow head section having slotted sides and the user actuated element includes a block section having one or more lateral protrusions that are slidably receivable in the slotted sides so as to locate the block section in the hollow head section when the user actuated element is moved to the second position.
  • the user actuated element is movable to a third position from which the user actuated element is able to be rotated and then released causing the one or more lateral protrusions to fall into a pair of slots having end stops on orthogonal faces of the head section, the end stops acting to retain the one or more lateral protrusions thereby keeping the user actuated element engaged with the coupling element.
  • the assembly further includes a lock mechanism which prevents rotation of the handle when the user actuated element is in the first position.
  • moving the user actuated element to the second position causes the lock mechanism to release to thereby permit rotation of the door handle so that the door can be opened.
  • the user actuated element is one of:
  • an aspect of the present invention seeks to provide a door handle assembly for controlling access through a door, the door handle assembly including: a) a door handle positioned on a first side of a door;
  • a latch mechanism including a latch bolt movable between an extended latching position and a retracted release position
  • a user actuated element operable to at least one of:
  • the door is only able to be opened by rotating the door handle whilst simultaneously actuating the user actuated element.
  • an aspect of the present invention seeks to provide a toddler proof door handle which has the safety feature incorporated into the internal components of a stylish modern door handle.
  • the toddler proof function is created by either separating the handle from the latch mechanism or by locking the handle in position. Separating the handle from the latch mechanism is the preferred option to completely prevent the use of force defeating the safety feature, but internally locking the handle in position could be used if it is more suited to the manufacturing process of a specific design.
  • any method could be used, such as but not limited to, the operation of a button or switch, or by pulling out or pushing in a collar or the entire handle.
  • This toddler proof function could be incorporated into existing designs of keyed entry, privacy and passage lever sets or doorknobs.
  • the lever or doorknob is separated from the latch mechanism, so the operation of the handle by a toddler will not release the latch and open the door.
  • a button has to be pressed to engage the lever or doorknob with the latch mechanism before the handle is rotated. Examples of how the button can couple the handle to the latch mechanism are described herein but this could be achieved using any form of coupling or engaging known in the art.
  • the button is located in the centre of the handle but could be located in other positions, such as but not limited to, the body of the handle or the door handle rose to keep the desired appearance for different designs.
  • any other part could be used instead of a button to couple the handle to the latch mechanism, such as but not limited to, a collar situated around the body of the handle or even the entire handle itself. In this case the pulling or pushing of a collar or the handle would couple the lever or doorknob to the latch mechanism to open the door.
  • the toddler proof door handle could also include a feature to permanently disable the toddler proof function returning it to a standard door handle.
  • This feature could be incorporated into the designs of a keyed entry, privacy or passage lever set or doorknob.
  • a modified spindle coupler and button to produce a passage lever set or doorknob is described herein with a feature to quickly and easily disable the toddler proof function in a matter of seconds.
  • An example of how a disable function could be achieved is described herein but any means of locking or latching the parts coupling the handle to the latch mechanism, or in the case of a toddler proof door handle that locks the handle to prevent operation, any means of disabling the lock, known in the art could be used.
  • Figure 1 is a perspective view of an example of a door handle assembly for preventing a toddler from being able to open the door;
  • Figures 2A to 2C show an example operation of the door handle assembly of Figure 1 in order to open the door;
  • Figure 3 is a perspective view of a privacy lever set including the toddler proof function
  • Figure 4A is an exploded view of the privacy lever set of Figure 3;
  • Figure 4B is a sectional view of part of the privacy lever set of Figure 3 showing a user actuated button in a first position in which the handle is disengaged from the latch mechanism;
  • Figure 4C is a sectional view of the privacy lever set of Figure 3 showing the user actuated button in a second position in which the handle is engaged with the latch mechanism;
  • Figure 5A is an exploded view of another example of a privacy lever set having toddler proof functionality
  • Figure 5B is a sectional view of part of the privacy lever set of Figure 5A showing a user actuated button in a first position in which the handle is disengaged from the latch mechanism;
  • Figure 5C is a sectional view of the privacy lever set of Figure 5A showing the user actuated button in a second position in which the handle is engaged with the latch mechanism;
  • Figures 6A and 6B show examples of modified button and coupling elements which enable the toddler proof functionality to be disabled.
  • Handle Lever or Doorknob.
  • Keyed Entry Set A door handle requiring a key to lock and unlock it from the outside with the ability to lock and unlock it by hand from the inside.
  • Privacy Set - A door handle with the ability to lock and unlock it by hand from one side. Usually has a part such as an emergency turn button to unlock from the opposite side.
  • Button - The part that is pressed to engage the handle.
  • Turn Snib/Button - A part that combines the features of both the turn snib and the button.
  • Emergency Turn Button - The part used to unlock a Privacy Set from the other side in an emergency.
  • Driver Sleeve - The sleeve that couples the handle to the spring cage.
  • Spring Cage The spring and housing that holds the handle in position and returns it to the rest position after use.
  • Mounting Plate The plates on either side of the door that are fixed together to hold the door handle in place.
  • Latch Mechanism The assembly that latches the door closed.
  • Locking Stem The stem that locates inside the turn snib, emergency release or keyed lock that when rotated either locks or unlocks the door.
  • the door handle assembly 100 includes a door handle 110 (e.g. lever or knob) positioned on a first side of a door 10 and a latch mechanism 130 including a latch bolt 132 movable between an extended latching position and a retracted release position.
  • a door handle 110 e.g. lever or knob
  • a latch mechanism 130 including a latch bolt 132 movable between an extended latching position and a retracted release position.
  • the assembly 100 further includes a user actuated element 120 operable to move from a first position in which the latch bolt 132 remains in the extended latching position to a second position that permits the latch bolt 132 to move to the retracted release position upon simultaneous rotation of the door handle 110 to thereby allow the door 10 to be opened.
  • the user actuated element 120 may take any suitable form and be arranged in any suitable manner.
  • the user actuated element 120 is a button that may be pressed into the stem 112 of the handle 110 by a user. It will be appreciated therefore that in this example the button moves axially between the first and second positions along an axis orthogonal to the door.
  • the button 120 is shown located in the centre of the handle 110 (in the stem) in this example, it may be located in other positions such as in the body of the handle 110 itself or alternatively in the door handle rose to keep the desired appearance for different designs.
  • the user actuated element could also be a switch, a collar situated around the body or stem of the handle or even the entire handle itself. In the case of a collar or the use of the handle itself as the user actuated element, a user would pull or push the collar or handle.
  • the above-described door handle assembly 100 provides a number of advantages. Firstly, it will be appreciated that two simultaneous actions are required in order to open the door. The user actuated element 120 must be moved to the second position and held in that position whilst simultaneously rotating the door handle 110. If only the handle 110 is actuated, the door 10 will not open and similarly if the user actuated element 120 is actuated but then allowed to return to the first position then rotation of the handle 110 will not open the door 10. This arrangement therefore assists in preventing a toddler or small child from easily being able to open the door.
  • the design is simple enough to enable an adult or older child to be able to open the door with one hand by contacting or gripping the user actuated element at the same time as the handle. This overcomes difficulties with some prior art solutions in which an inconvenient two-hand operation is required in order to operate or release external attachments and the like.
  • access to certain areas or rooms within a home can be controlled by the above-described door handle assembly leading to safer outcomes that substantially mitigate hazards associated for example with moving vehicles, chemicals, poisons, flammable substances, insecticides, and tools that may be kept in a garage and stairs and laundries that pose additional dangers to young children. Access to rooms in which young children would be an inconvenience such as offices and media rooms may also be prevented.
  • moving the user actuated element 120 from the first position to the second position causes the door handle 110 to become selectively engaged or coupled with the latch mechanism 130.
  • the handle 110 in normal use the handle 110 is separated from the latch mechanism 130 so that if the handle 110 is turned, the latch mechanism 130 is not operated and the latch bolt 132 remains in the extended latching position.
  • the function of the user actuated element 120 therefore is to selectively engage the handle 110 with the latch mechanism 130 when moved to the second position so that rotation of the handle 110 causes the latch bolt 132 to retract as per operation of a standard door handle.
  • the user actuated element 120 is operatively (or permanently) engaged with a spindle that is rotatably coupled to the latch mechanism 130 so that rotation of the spindle causes the latch bolt 132 to move between the extended latching position and the retracted release position.
  • the spindle is typically provided in an opposing handle sub-assembly which may be of conventional design.
  • the assembly 100 further includes a spring cage rotatably coupled to the door handle 110, the spring cage including an aperture engageable with the user actuated element 120.
  • the aperture is sized so that when the user actuated element 120 is inserted therethrough, a close fit is obtained which permits the user actuated element 120 and spring cage to turn in unison.
  • the assembly 100 typically further includes a biasing member (such as a coil spring) interposed between the user actuated element 120 and the spring cage.
  • the biasing member urges the user actuated element 120 away from the spring cage so that in the first position the user actuated element 120 is disengaged from the aperture in the spring cage.
  • rotation of the handle 110 turns the spring cage but not the user actuated element 120 (or spindle coupled therewith) so the door 10 remains latched.
  • the biasing member is compressed and the user actuated element 120 moves axially from the first position to the second position in which the user actuated element 120 engages in the aperture of the spring cage. In this second position, rotation of the spring cage will now cause the user actuated element 120 (and spindle) to turn. As such, the door handle 110 is selectively engaged with the latch mechanism 130 when the user actuated element 120 is in the second position.
  • the user actuated element 120 includes a first portion rotatably coupled to a second portion.
  • the first portion is permanently engaged with a locking stem, and includes a turn snib operable by a user to rotate the locking stem causing the door to be selectively locked and unlocked.
  • This locking functionality (common on many doors) is able to be achieved by having a multi-part user actuated element 120 that is assembled permitting the first and second portions to turn freely from each other.
  • the first portion further includes a hollow cylindrical shaft for receiving the locking stem and the second portion includes a hollow square shaft for slidable engagement over the spindle. It will of course be appreciated that these sectional shapes are example only and may be varied depending on the configuration of the spindle and locking stem for example.
  • the aperture in the spring cage is a square hole for slidably engaging over the square shaft of the user actuated element 120.
  • the square hole in the spring cage is larger than normal so that the spindle is able to turn freely inside it (conventionally the spindle engages in the hole of the spring cage so that rotation of the spring cage is imparted to the spindle).
  • the hole in the spring cage is now designed to engage with the second portion of the user actuated element 120 instead.
  • the user actuated element 120 includes a radial flange between the first portion and the second portion, the radial flange providing a contact surface for the biasing member.
  • the user actuated element 120 is selectively engaged with a spindle via a coupling element (i.e. a spindle coupler), the spindle being rotatably coupled to the latch mechanism so that rotation of the spindle causes the latch bolt to move between the extended latching position and the retracted release position as previously described.
  • a coupling element i.e. a spindle coupler
  • the assembly 100 further includes a spring cage rotatably coupled to the door handle 110, the spring cage including an aperture configured to permit the coupling element to rotate freely within it.
  • the aperture in this example may be a circular hole of sufficient diameter to allow which the square shaft of the coupling element to rotate within it.
  • the assembly 100 further includes a biasing member interposed between the user actuated element 120 and the coupling element, the biasing member configured to urge the user actuated element 120 away from the coupling element so that in the first position the user actuated element 120 is disengaged from the coupling element.
  • the biasing member Upon user actuation of the user actuated element 120, the biasing member is compressed and the user actuated element 120 moves axially from the first position to the second position in which the user actuated element 120 engages with the coupling element. In this configuration, rotation of the user actuated element 120 will cause rotation of the spindle via the coupling element.
  • the user actuated element 120 engages an internal portion of the door handle stem 112 so that rotation of the door handle 110 causes the user actuated element 120 to rotate which in turn causes the spindle to rotate via the coupling element which causes the latch bolt to move to the retracted release position allowing the door to be opened.
  • the user actuated element 120 may include a first shaft portion having a first flange with flat side portions configured to engage with corresponding flat sections located inside the stem 112 of the door handle 110 when the user actuated element 120 moves from the first position to the second position.
  • actuation of the user actuated element 120 couples the user actuated element 120 to both the handle 110 and the spindle via the coupling element simultaneously.
  • the user actuated element 120 is permanently engaged with a locking stem, the user actuated element 120 including a turn snib operable by a user to rotate the locking stem causing the door to be selectively locked and unlocked. This is able to be achieved since in the first position, the user actuated element 120 is disengaged from the coupling element. Furthermore, the flange of the first shaft portion of the user actuated element 120 is free to rotate within the stem 112 of the door handle 110 when the user actuated element 120 is in the first position.
  • the user actuated element 120 further includes a second shaft portion and a third shaft portion, the second shaft portion being larger in width than the third shaft portion and configured for slidable engagement within the coupling element.
  • the third shaft portion In the first position, the third shaft portion is located within the coupling element so as to align the user actuated element 120 with the coupling element.
  • the second shaft portion In the second position, the second shaft portion is engaged within the coupling element so that the two parts turn in unison.
  • the second shaft portion has a square section and the coupling element defines a square opening for slidably receiving the second shaft portion therein upon actuation of the user actuated element 120.
  • the third shaft portion has a circular section which is able to rotate freely within the square opening of the coupling element when the user actuated element 120 is in the first position.
  • the user actuated element 120 further includes a second flange disposed between the first and second shaft portions and the coupling element includes a circlip disposed proximate a distal end thereof, and wherein the biasing element is interposed between the second flange and the circlip in order to keep the user actuated element 120 biased apart from the coupling element in the first position.
  • the user actuated element is configured so that it remains engaged with the coupling element in a released position.
  • user input e.g. pushing force
  • the spring causes the user actuated element to move away and disengage from the coupling element.
  • the user actuated element is able to remain engaged with the coupling element when no longer being actuated.
  • the coupling element includes a hollow head section having slotted sides and the user actuated element includes a block section having one or more lateral protrusions that are slidably receivable in the slotted sides so as to locate the block section in the hollow head section when the user actuated element is moved to the second position.
  • the door handle In this position, the door handle is coupled to the latch mechanism permitting the door to be opened upon simultaneous rotation of the handle. If the actuation force is released, the user actuated element will return to the first position and disengage from the coupling element as in the previous example implementation.
  • the user actuated element is movable to a third position from which the user actuated element is able to be rotated and then released causing the one or more lateral protrusions to fall into a pair of slots having end stops on orthogonal faces of the head section, the end stops acting to retain the one or more lateral protrusions thereby keeping the user actuated element engaged with the coupling element.
  • the door handle is able to be operated in normal fashion and the toddler proof functionality is temporality disabled until the user actuated element is again moved to the third position and rotated so that the one or more protrusions are again aligned with the slotted sides of the head section of the coupling element.
  • the assembly further includes a lock mechanism which prevents rotation of the handle when the user actuated element is in the first position.
  • moving the user actuated element to the second position causes the lock mechanism to release to thereby permit rotation of the door handle so that the door can be opened.
  • any type of internal lock could be used that locks any of the rotating parts, such as but not limited to the handle, driver sleeve, spring cage or spindle, to a stationary part, such as but not limited to, the mounting plate or body of the latch mechanism.
  • the handle will always be coupled to the latch mechanism and the user actuated element is operable to release the lock instead of selectively coupling the handle to the latch mechanism.
  • the user actuated element may be one of a button, a switch, a slidable collar disposed around the body of the door handle or the door handle itself, wherein the body or stem of the handle is configured to be axially movable with respect to the door.
  • the present invention provides a door handle assembly for controlling access through a door, the door handle assembly including: a door handle positioned on a first side of a door; a latch mechanism including a latch bolt movable between an extended latching position and a retracted release position; and, a user actuated element operable to at least one of: selectively couple the door handle with the latch mechanism; and, release a lock to allow the door handle to be rotated; wherein, the door is only able to be opened by rotating the door handle whilst simultaneously actuating the user actuated element.
  • the user actuated element is a button and shall be referred to this from hereon.
  • a user actuates the button by pressing it in which moves the button axially with respect to the stem of the door handle. This action may be performed simply by the thumb of the user as shown in Figure 2A.
  • the user grips the door handle in the palm of their hand whilst keeping the button pressed in as shown in Figure 2B.
  • the user rotates the handle whilst the button remains depressed and opens the door. This sequence of steps is able to be performed easily by an adult or older child using one hand but is unable to be performed by a toddler or small child who lacks the dexterity and strength to simultaneously perform both operations.
  • the door handle assembly is a privacy lever set which enables the door to be locked and unlocked by hand on one side.
  • An emergency turn button may be provided on the opposite side to enable the door to be unlocked in an emergency.
  • This type of lever set is shown for the purpose of illustration only and it will be appreciated that any other type of lever set commonly used in a domestic home may also be provided with the toddler proof functionality which will now be described in more detail.
  • the door handle assembly 300 includes a modified handle subassembly 340 which includes the toddler proof features on a first side of the door and a standard handle sub-assembly 350 mounted thereto and positioned on the opposite side of the door.
  • a latch mechanism 330 is located between the modified handle sub-assembly 340 and the standard handle sub-assembly 350.
  • the modified handle sub-assembly 340 includes a handle 310 (which in this example is a lever but could also be a knob) whilst a handle 360 is provided on the opposite side of the door as part of the standard sub-assembly 350 which also includes a spindle 450 and locking stem 452.
  • the latch mechanism 330 includes a drive unit 434 rotatable to cause the latch bolt 432 to move between an extended latching position and a retracted release position.
  • the spindle 450 extends through the latch mechanism 330 and is rotatably coupled to the drive unit 434 so that rotation of the spindle 450 causes movement of the latch bolt 432 between the extended and retracted positions.
  • the modified handle sub-assembly 340 further includes a mounting plate 402 which is concealed by a door handle rose 404.
  • the mounting plate 402 has screw or bolt holes therethrough for receiving screws that join the opposing handle sub-assemblies together to the latch mechanism 330 as is conventional in the art.
  • the door handle stem 312 sits inside the rose 404 and a driver sleeve 480 is disposed with the stem 312 and rotatably coupled to a spring cage 440.
  • the spring cage 440 via spring 446 enables the handle 310 to return to its horizontal position when released.
  • the sub-assembly 340 further includes a button 320 having a turn snib 421 at a proximal end.
  • the button 320 is housed within the stem 312 of the handle and is selectively engaged with a coupling element 460 which is engaged with the spindle 450.
  • the spring cage 440 has a circular hole therethrough sufficiently large so that the coupling element 460 is able to spin freely within it.
  • the coupling element 460 is an elongate hollow square shaft having a circlip 462 disposed proximate a distal end thereof in locating grooves.
  • the button 320 includes the turn snib 421 at a proximal end which terminates in an oval shaped flange 422 having a pair of opposing flat sides.
  • a first shaft portion extends from the flange 422 to a flange or raised circular ring 424.
  • a second shaft portion being a square shaft 426 extends from the ring 424 and tapers down to a third shaft portion being a circular shaft 428 which terminates at a proximate end of the button 320.
  • a coil spring 470 is interposed between the flange or ring 424 of the button 320 and the circlip 462 of the coupling element 460.
  • the coil spring 470 acts to urge the button 320 away from the coupling element 460 so that in a first position (when not actuated) the button 320 is disengaged from the coupling element 460. In this position, the circular shaft 428 of the button 320 sits inside the coupling element 460 keeping the two parts aligned.
  • the button 320 is pressed in and moved to a second position (i.e. an actuated position) the square shaft 426 of the button 320 engages within the coupling element 460 which has an opening sized to receive the square shaft 426 of the button 320 in a close fitting manner. In this second position, the button 320 is now rotatably coupled to the spindle 450 via the coupling element 460.
  • the button 320 When the button 320 is pressed, as well as engaging with the coupling element 460, it also engages with the handle 310. This is achieved by the oval shaped flange 422 with flat sides at the proximal end (i.e. head) of the button 320 moving from a circular section inside the stem 312 of the handle 310 into a close fitting section with flat sides 410 when the button 320 is pressed. So when the button 320 is pressed in, the handle 310 rotates the button 320 which in turn rotates the coupling element 460, the spindle 450 and the drive unit 434 of the latch mechanism 330. The circular section inside the stem 312 of the handle 310 allows the button 320 to rotate independently from the handle 310 when at rest. This allows the turn snib 421 to still be used for its original function of locking and unlocking the door by rotating the locking stem 452 which is disposed within internal opening 425 of the button 320.
  • the emergency turn button would be used as the button instead of the turn snib.
  • a keyed entry set could be manufactured using this design with the same turn snib/button to engage the handle with the latch mechanism.
  • On a passage set the same design could be used with a flat button used in place of the turn snib/button.
  • the design shown in Figures 3 to 4C also allows for the door handle to be used on doors of different widths within a certain range the same as a standard door handle.
  • FIG. 5 A to 5C An alternative construction of a door handle assembly 500 for use in preventing a toddler or small child from opening a door is shown in Figures 5 A to 5C. Similar to the previous example, the door handle assembly 500 is a privacy lever set, which enables the door to be locked and unlocked by hand on one side. An emergency turn button may be provided on the opposite side to enable the door to be unlocked in an emergency. As in the previously described example, this type of lever set is shown for the purpose of illustration only and it will be appreciated that any other type of lever set commonly used in a domestic home may also be provided with the toddler proof functionality which will now be described in more detail.
  • the latch mechanism 330 including the drive unit 434 and latch bolt 432 is the same as for the previous example along with the standard handle sub-assembly 350 to which handle 360 is attached and from which the spindle 550 and locking stem project.
  • the spindle 550 extends through the drive unit 434 and is rotatably coupled thereto so that rotation of the spindle 550 actuates the latch mechanism 330 so as to move the latch bolt 432 from the extended latching position to the retracted release position.
  • the modified handle sub-assembly in this example includes handle 510 having a stem 512 that sits within door handle rose 404.
  • the rose 404 provides concealment or cover for mounting plate 402.
  • the driver sleeve 480 is disposed within the stem of the handle 510 and is rotatably coupled to spring cage 540 so that rotation of the handle 510 rotates the spring cage 540 via the driver sleeve 480.
  • the spring cage 540 has an enlarged square hole 542 therethrough of sufficient size such that the spindle 550 which extends through it is able to spin freely inside it.
  • the clearance between the spindle 550 and square hole 542 of the spring cage 540 is shown most clearly in Figure 5B.
  • the user actuated element is a button 520 which includes a turn snib 521 at a proximate end thereof.
  • the button 520 includes a circular shaft 522 extending from the turn snib 521 and a square shaft 526 disposed at a distal end of the button 520.
  • a raised element such as a flange, ring or circlip 524 is disposed between the circular shaft 522 and the square shaft 526.
  • the square shaft 526 has an outer section sized to closely fit within the square hole 542 of the spring cage 540 when the button 520 is actuated.
  • the square shaft 526 is a hollow body which defines an opening 528 to receive the spindle 550 which is permanently engaged therewith during operation.
  • a coil spring 570 is interposed between the ring 524 of the button 520 and the spring cage 540 so as to urge the button 520 away from the spring cage 540 when not actuated.
  • the spring 570 ensures that in the first unactuated position, the square shaft 526 of the button 520 sits short of the square hole 542 in the spring cage 540 so that button 520 is disengaged from the spring cage 540.
  • the square shaft 526 of the button 520 slides at least partially through the square hole 542 of the spring cage 540 in order to rotatably couple the button 520 to the spring cage 540.
  • the spring cage 540 turns via the driver sleeve 480 which causes the square shaft 526 of the button 520 to rotate, thereby turning the spindle 550 and actuating the latch mechanism 330 to release the latch bolt 432.
  • actuation of the button 520 selectively couples the handle 510 with the latch mechanism 330 so that simultaneous rotation of the handle 510 with the button 520 actuated will allow the door to be opened by an adult or older child.
  • a door handle assembly 500 as shown having a separate lock function whereby the turn snib 521 is rotatably coupled to the locking stem 552 it is desirable to be able to rotate the turn snib 521 without the square shaft 526 of the button 520 turning at the same time.
  • This may be achieved by providing the button 520 as two separate pieces that are coupled together so that they can turn independently of each other.
  • the turn snib 521 and circular shaft 522 are formed as one part that is rotatably coupled to the square shaft 526 which is formed as a separate part. In this manner, the circular shaft 522 which is permanently engaged over the locking stem 552 can be rotated via the turn snib 521 in order to lock and unlock the door.
  • FIG. 5B The operational states of the button 520 are depicted in Figures 5B and 5C.
  • the button 520 is in the first position in which the spring 570 is extended and acting to keep the square shaft 526 of the button 520 just short of the square hole 542 of the spring cage 540.
  • the spring cage 540 will turn via the driver sleeve 480.
  • the square hole 542 of the spring cage 540 is larger than the spindle 550, there is no coupling and the spring cage 540 is able to turn independently of the spindle 550, thereby preventing the latch mechanism 330 from being actuated.
  • the button 520 is depicted in the second position in which it is actuated (i.e. pressed in).
  • the spring 570 is compressed and the square shaft 526 of the button 520 slides into the square hole 542 of the spring cage 540 to thereby couple the button 520 to the spring cage 540 as a result of the closeness of fit.
  • the spring cage 540 turns via the driver sleeve 480 and the square shaft 526 of the button 520 (which is engaged with the spindle 550) also turns which rotates the spindle 550 and causes actuation of the latch mechanism 330 so that the latch bolt 432 moves to the retracted release position.
  • the door is therefore able to be opened by rotating the handle 510 whilst the button 520 is actuated.
  • FIG. 6A there is shown a button 610 which may be used for a passage lever set in which there are no locks.
  • the button 610 has a head 614 in which may be provided a slot enabling the button 610 to be rotated by a screwdriver or the like.
  • the button 610 has a circular shaft 613 and a square block section 611 set back from an end of the shaft 613 so as to surround a portion thereof.
  • the square block 611 has one or more protrusions 612 that project laterally outward from opposing faces of the square block 611.
  • the coupling element 620 has an elongate hollow body for receiving the spindle at a distal end.
  • a head section 621 having slotted sides 622 for receiving the one or more protrusions when the button 610 is pressed in in order to locate the square block section 611 of the button 610 in the opening 623 of head section 621 of the coupling element 620.
  • the button 610 and coupling element 620 are operatively engaged and capable of rotating together.
  • the end of the circular shaft 613 sits within the opening 623 of the head section 621 of the coupling element 620 and is able to turn freely inside it.
  • a screwdriver is used to push the button 610 in even further to its limit of travel at a third position.
  • the one or more protrusions 612 are disposed beyond the slots 622 of the head section 621 and the square block 611 sits within a circular section 624 of the coupling element 620.
  • the button 610 can be rotated in this position (independently of the coupling element 620) by the screwdriver 90 degrees so that the one or more protrusions become aligned with a pair of slots 625 having end stops in orthogonal faces of the head section 621.
  • the button 610 is then released and the spring pushes the button 620 away from the coupling element until the one or protrusions abut the end stops provided in slots 625.
  • the button 610 is now permanently engaged with the coupling element 620 so that the handle is coupled to the latch mechanism and able to be used in a conventional manner to open the door. This arrangement may be desirable for example in situations where only adults are at home. In order to revert back to the toddler proof functionality, the reverse operation is followed in which the button 610 is pressed in to its full extent, rotated 90 degrees in either direction and then released.
  • FIG. 6B A similar arrangement is shown in Figure 6B, whereas instead of having a circular section 624 beyond the head section 621, the coupling element 630 has an enlarged square section 634 instead.
  • the square block 611 When the button 610 is pressed in to its full extent, the square block 611 is able to turn freely within the enlarged square section 634 permitting the button 610 to turn independently of the coupling element 630.
  • the above-described door handle assembly is capable of preventing a toddler or small child from opening the door, thereby preventing access to rooms or areas of the home that may present a danger to toddlers.
  • the toddler proof functionality of the door handle assembly is provided internally within the handle assembly so that the aesthetics of the handle can be maintained without the need for external child safety lock mechanisms which are unattractive and which can often still be defeated by the toddler.
  • the toddler proof functionality may be incorporated into any existing designs of keyed entry, privacy and passage lever sets or doorknobs.
  • the door is still able to be easily opened by an older child or adult in a convenient manner using one-hand only.

Landscapes

  • Lock And Its Accessories (AREA)

Abstract

La présente invention concerne un ensemble poignée de porte, comprenant : une poignée de porte positionnée sur un premier côté d'une porte ; un mécanisme de verrouillage comprenant un pêne mobile entre une position de verrouillage étendue et une position de libération rétractée ; et un élément actionné par l'utilisateur permettant de se déplacer d'une première position dans laquelle le pêne reste dans la position de verrouillage étendue vers une seconde position qui permet au pêne de se déplacer vers la position de libération rétractée lors de la rotation simultanée de la poignée de porte pour permettre ainsi d'ouvrir la porte. De manière avantageuse, l'ensemble poignée de porte peut aider à empêcher un tout-petit ou un jeune enfant d'ouvrir la porte.
PCT/AU2017/051167 2016-10-25 2017-10-24 Ensemble poignée de porte WO2018076052A1 (fr)

Applications Claiming Priority (2)

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US201662412679P 2016-10-25 2016-10-25
US62/412,679 2016-10-25

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WO2018076052A1 true WO2018076052A1 (fr) 2018-05-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220042346A1 (en) * 2019-09-11 2022-02-10 Carrier Corporation Hub assembly for door handle
US11603679B2 (en) 2019-03-01 2023-03-14 Schlage Lock Company Llc Child-resistant door handle
US11879266B2 (en) 2019-10-28 2024-01-23 Schlage Lock Company Llc Auxiliary trim locking module

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US474519A (en) * 1892-05-10 candee
US817713A (en) * 1904-02-18 1906-04-10 William H Hope Door lock and latch.
US2201494A (en) * 1939-04-13 1940-05-21 Percy A Keith Combination doorknob
DE3943290A1 (de) * 1989-05-22 1990-11-29 Wehag Leichtmetall Gmbh Griff fuer fenster, tueren oder dergleichen
GB2281756A (en) * 1993-04-15 1995-03-15 W M S Group Ltd An actuator handle assembly
FR2854187A1 (fr) * 2003-04-24 2004-10-29 Ronis Sa Poignee de securite pour serrure
FR2866045A1 (fr) * 2004-02-06 2005-08-12 Tirard Sas Bouton de commande de serrure de securite
US20060290148A1 (en) * 2003-08-21 2006-12-28 Joseph Talpe Safety button
WO2007089135A1 (fr) * 2006-02-02 2007-08-09 Van Laerhoven, Bart Dispositif de verrouillage doté d'une poignée d'actionnement de sûreté, et poignée d'actionnement de sûreté associée

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US474519A (en) * 1892-05-10 candee
US817713A (en) * 1904-02-18 1906-04-10 William H Hope Door lock and latch.
US2201494A (en) * 1939-04-13 1940-05-21 Percy A Keith Combination doorknob
DE3943290A1 (de) * 1989-05-22 1990-11-29 Wehag Leichtmetall Gmbh Griff fuer fenster, tueren oder dergleichen
GB2281756A (en) * 1993-04-15 1995-03-15 W M S Group Ltd An actuator handle assembly
FR2854187A1 (fr) * 2003-04-24 2004-10-29 Ronis Sa Poignee de securite pour serrure
US20060290148A1 (en) * 2003-08-21 2006-12-28 Joseph Talpe Safety button
FR2866045A1 (fr) * 2004-02-06 2005-08-12 Tirard Sas Bouton de commande de serrure de securite
WO2007089135A1 (fr) * 2006-02-02 2007-08-09 Van Laerhoven, Bart Dispositif de verrouillage doté d'une poignée d'actionnement de sûreté, et poignée d'actionnement de sûreté associée

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11603679B2 (en) 2019-03-01 2023-03-14 Schlage Lock Company Llc Child-resistant door handle
US20220042346A1 (en) * 2019-09-11 2022-02-10 Carrier Corporation Hub assembly for door handle
US11879266B2 (en) 2019-10-28 2024-01-23 Schlage Lock Company Llc Auxiliary trim locking module

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