WO1994001648B1 - Door closers - Google Patents

Abstract

A door closer of the door check type comprising a housing (10) for assembly with a door and supporting a pivotally mounted lever (21) and driving spring means (32) arranged to drive the lever (21) in an operative direction, and keep member (40) for assembly with a door frame to be engaged by said lever (21) and cooperate therewith to pull the door towards the door frame, the housing (10) comprising an elongate body (15) which houses said driving spring means (32) and a mounting plate (11) at one end of the body (15) whereby the housing body (15) may be mounted within the thickness of the door with said mounting plate (11) secured at an edge face thereof, the keep member (40) comprising a keep body (44) which defines a recess (43) adapted to receive the lever (21) and a mounting flange (41) whereby the keep body (44) may be recessed into the door frame with the mounting flange (41) secured at an edge face of the door frame which is presented towards the edge face of the door at which the housing body (15) is mounted.

Claims

AMENDED CLAIMS[received by the International Bureau on 10 January 1994 (10.01.94); original claims 1-3 replaced by amended claim 1; claims 4, 6 and 7 amended and renumbered as claims 2-4 claim 5 amended; claims 8-12 amended and renumbered as claims 6-10 (3 pages)]

1. A door closer of the door check type comprising a housing (10) for assembly with a door and supporting a pivotally mounted lever (21,22,24) and driving spring means (32) arranged to drive said lever (21,22,24) in an operative direction, and a keep member (40) for assembly with a door frame to be engaged by said lever (21,22,24) and co-operate therewith to pull the door towards the door frame, wherein said housing (10) comprises an elongate body (20) which houses said driving spring means (32) and a mounting plate (11) at one end of said body (20) arranged transverse to the length of said body whereby the housing body (20) may be mounted within the thickness of the door with said mounting plate (11) secured at an edge face of the door, wherein said lever (21,22,24) comprises an arm (21) which is movable between a first or "primed" position in which it extends generally in or parallel to the plane of the mounting plate (11) and protrudes laterally therefrom, and a second or "actuated" position in which it extends away from the mounting plate (11) in a direction generally transverse to the plane thereof and within the lateral boundaries of the mounting plate (11), and wherein said keep member (40) comprises a keep body (44), which defines a recess (43) adapted to receive the lever (21,22,24), and a mounting flange (41) adjacent to an open mouth of said recess (43) whereby the keep body (44) may be recessed into the door frame with the mounting flange (41) secured at an edge face of said door frame which is presented towards said edge face of the door at which the housing body is mounted, characterised in that the housing (10) supports a displaceable latch member (16) which co-operates with said lever (21,22,24) to hold said arm (21) in the first position until displaced.

2. A door closer according to Claim 1 wherein the latch member (16) is carried by said mounting plate (11) for movement in a direction generally parallel 13

to the plane of the mounting plate (11) and is biased by spring means into engagement with an abutment face (19) formed on the lever (21,22,24).

3. A door closer according to Claim 2 wherein the keep member (40) is formed or provided with striker means (45) so arranged and adapted as to engage the latch member (16) or a part carried thereby or connected thereto when the housing (10) is brought into register with the keep member (40) as the door is closed, and thereby disengage the latch member (16) from the lever (21,22,24).

4. A door closer according to Claim 3 wherein the striker means comprises a pin (45) which is mounted on the keep member (40) in a manner which permits of adjustment in a direction towards and away from the plane of the mounting flange (41).

5. A door closer according to any one of the preceding claims wherein the lever (21,22,24) is movable through a dead centre position between said primed and actuated positions so that said driving spring means (32) also holds the lever in said primed position until the lever (21,22,24) is initially displaced by external forces past the dead centre position, the latch member (16) serving as a safety catch to prevent such initial displacement of the lever inadvertently.

6. A door closer according to Claim 5 wherein the keep member (40) is formed or provided with trip means (46) adapted and arranged in use to engage said lever (21,22,24) as the housing (10) is brought into register with the keep member (40) and displace said lever (21,22,24) from its primed position and past its dead centre position, allowing the lever (21,22,24) then to be driven to its actuated position and engage a reaction face (48) afforded by the keep member (40), the arm (21) of the lever (21,22,24) bearing against said reaction face (48) to draw the door towards the door frame. 14

7. A door closer according to Claim 6 wherein the trip means (46) comprises a cam face (47) for engagement with said lever (21,22,24) and formed on a trip member (46) which is adjustably secured to the keep body (44) for movement in a direction towards and away from the plane of the mouth of the recess (43).

8. A door and frame assembly fitted with a door closer according to any one of the preceding claims.

9. A door closer according to Claim 1 and substantially as hereinbefore described with reference to and as shown in the accompanying drawings.

10. A door and frame assembly fitted with a door closer according to Claim 9.