Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B13/00—Devices preventing the key or the handle or both from being used
  • E05B13/10—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle
  • E05B13/106—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle for handles pivoted about an axis perpendicular to the wing
  • E05B13/108—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle for handles pivoted about an axis perpendicular to the wing the lock coaxial with spindle
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B13/00—Devices preventing the key or the handle or both from being used
  • E05B13/10—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle
  • E05B13/101—Devices preventing the key or the handle or both from being used formed by a lock arranged in the handle for disconnecting the handle

Definitions

• This invention relates to a key lock handle for doors and windows, in particular a cremone handle.
• cremone handles available on the market have a built-in key lock device for locking the handle in a certain position, normally the position where the door or window the handle is mounted on is closed.
• the interference means act on the handle casing at the boss, which presents a pair of non-cylindrical external surface areas whose axis coincides with the axis of rotation of the handgrip (allowing reversibility of the handle): in this way, the handgrip can be locked stably in one of the positions that it can adopt as it turns about its axis of rotation.
• the boss is quadrangular in shape so that locking is possible on whatever side of the bush the handgrip is positioned on, there being four positions at angular intervals of 90° from each other.
• the key-operated interference means consist of a barrel that can be inserted horizontally and slidably into the handgrip which affords a through hole made under the axis of the handgrip and in such a way that the barrel can be operated from the outside.
• Operating the barrel actuates a slide positioned horizontally on a pair of rails fixed to the inside of the handgrip surrounding the boss, in such a way as to move the slide from a point inside the handgrip to a point where the slide is positioned between the handgrip itself and the outside surface of the boss: this produces interference between these two parts which prevents rotation of the handgrip from one position (closed) to another position (open) or vice versa.
• this solution meets the requirements of making handles reversible, of providing security in the key locked position and of allowing handgrips to be mounted with or without key lock mechanisms without having to operate on the handle casing, its technical characteristics are, on the other hand, such that it cannot be applied to the latest handle designs which may have up to three operating configurations and above all such that it cannot satisfy operating and security requirements in certain situations.
• This invention therefore has for an aim to overcome the above mentioned disadvantages by providing a key lock handle for doors and windows, in particular a cremone handle, made in such a way that the user can select the position of the key lock means in order to set the positions which can be adopted by the handle grip and which correspond to predetermined positions of the door or window; while at the same time maintaining the optimum dimensions and appearance of the handle.
• this invention achieves this aim by providing a handle, in particular, a key lock handle, for doors and windows comprising the technical characteristics set out in one or more of the appended claims.
• FIG. 1 is an exploded perspective view of a key lock handle according to the invention
• FIG. 2 is a partial cross section of the handle of Figure 1 in a first operating configuration
• FIG. 3 is a plan view, with some parts cut away in order to better illustrate others, illustrating the handle of Figure 1 in the first configuration of Figure 2;
• FIG. 4 is a partial cross section of the handle of Figure 1 in a second operating configuration
• FIG. 5 is a plan view, with some parts cut away in order to better illustrate others, illustrating the handle of Figure 1 in the second configuration of Figure 4;
• FIG. 6 is a partial cross section of the handle of Figure 1 in a third operating configuration
• FIG. 7 is a plan view, with some parts cut away in order to better illustrate others, illustrating the handle of Figure 1 in the third configuration of Figure 6;
• FIG. 8 is an exploded perspective view of a detail of the handle of Figure 1.
• the handle according to the invention can be used to operate doors or windows and is provided with key lock means.
• This handle denoted in its entirety by the numeral 1, basically comprises: a handle casing 2; a handgrip 4; a spindle 5 for transmitting motion to control means 6; and key-operated security means 7.
• the handle casing 2 has, on one side of it, a boss-like protrusion 3 from which extends the handgrip 4, the latter being designed to turn the spindle 5 housed inside the handle casing 2 about an axis Y transversal to the handle casing 2 from at least a first position to a second position and vice versa (that is to say at least from a closed position to an open configuration).
• the handle casing 2 has control means 6 engageable with a door or window operating device; the control means 6 and the operating device are of well known type and therefore not described in this specification.
• the key-operated security means 7 are positioned and operative between the handgrip 4 and the handle casing 2 to enable the handgrip 4 to be locked stably relative to the handle casing 2 in at least one of the two above mentioned positions.
• the key-operated security means 7 comprise: a setting pin 8 and positioning means 10.
• the setting pin 8 can be actuated by the key 9 and can be moved into three stable positions, namely, a distal position, a middle position and a proximal position relative to the handgrip 4.
• These three positions of the pin 8 correspond to three configurations which can be adopted by the door or window and which, as described in more detail below, are a closed position, a turned open position and tilted open position.
• the positioning means 10 are located on the boss 3 and act on the setting pin 8 in such a way that the latter can move to:
• the boss- like protrusion 3 and the positioning means 10 are formed on a cover 2a of the handle casing 2.
• a handle 1 with a key lock device can be easily changed into one without a key lock device and vice versa without having to remove the entire handle assembly but only the handgrip 4 and the cover 2a.
• the only novel feature of the handle casing 2 is a facing 2b in the area under the hole 11, for accommodating the end of the pin 8 in the first, distal position Hl (facings of this kind are usually also made to reduce the weight of the casing).
• the positioning means 10 comprise a through hole
• the through hole 11 can be engaged with the pin 8 when it is in the first, distal position Hl where the pin 8 protrudes from the handgrip 4 (see Figure 2).
• the positioning means 10 further comprise at least one arcuate segment 12 protruding from the top surface 13 of the boss 3 and one end of which defines a side wall for abutting against the pin 8 in the middle position H2, where the pin 8 only partly protrudes from the handgrip 4, in such a way as to allow the handgrip 4 to turn only through the right angle ⁇ (see Figures 4 and 5).
• the pin 8 in the proximal position H3, on the other hand, is totally inside the handgrip 4 so as to avoid contact with the arcuate segment 12 and thus allowing the handgrip 4 to turn through the flat angle ⁇ (see Figures 6 and 7).
• the arcuate segment 12 is slidably coupled, in use, with an uninterrupted circular groove 14 afforded by the underside of the handgrip 4 itself.
• the pin 8 moves between the aforementioned three positions in a line parallel to the transversal axis of rotation Y of the handgrip 4.
• the positioning means
• the above mentioned key-operated security means 7 may, in one example embodiment, comprise a cylindrical shell 15 housed in a matching hole 16 made in the handgrip 4.
• the shell 15 houses the key-operated control means comprising a cylindrical element 17 for slidably accommodating the pin 8 which has a transversal hole 18 for engaging a rod 19 to connect the pin 8 to the cylindrical element 17.
• At least one end of the rod 19 is locked to a cam profile 20 formed on the cylindrical element 17 so that turning the key 9 (and hence the cylindrical element
• the key 9 can be removed from the cylindrical element 17: that means the positions which can be adopted by the door or window can be set and the setting cannot be changed unless the key is inserted again.
• the pin 8 enables the door or window:
• a handle made as described above fully achieves the aforementioned aims thanks to the interaction between the key lock means and the positioning means present on the cover of the handle casing.
• This feature makes it possible, for security reasons, not only to lock the door or window but also to choose the way it can be opened, without affecting either the appearance or the ease of operation of the handle.
• Setting the type of opening can help reduce security risks in public buildings (such as kindergartens, schools or hospitals) where authorized users can set the door or window so that, under normal circumstances, it can only be closed and opened by tilting while, for maintenance or cleaning purposes, it can also be fully opened by turning.

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• Lock And Its Accessories (AREA)

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Publications (2)

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ID=39492681

Family Applications (1)

Country Status (2)

Citations (5)

• 2006
  • 2006-12-04 IT ITBO20060827 patent/ITBO20060827A1/it unknown
• 2007
  • 2007-11-28 WO PCT/IB2007/003801 patent/WO2008068603A2/en active Application Filing

Patent Citations (5)

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