AU2016262757A1

AU2016262757A1 - A lock for a sliding window

Info

Publication number: AU2016262757A1
Application number: AU2016262757A
Authority: AU
Inventors: Joshua Tubb
Original assignee: Azuma Design Pty Ltd
Current assignee: Azuma Design Pty Ltd
Priority date: 2015-12-01
Filing date: 2016-11-25
Publication date: 2017-06-15
Anticipated expiration: 2036-11-25
Also published as: AU2016262757B2

Abstract

A LOCK FOR A SLIDING WINDOW A lock (10) for a sliding door or window, the window or door including a fixed frame and a sliding panel. The lock assembly (10) is pivotally mounted on the sliding panel and is moved between an engaging position, engaging the frame to prevent movement of the panel, and a release position disengaged with the frame allowing movement of the panel. The lock assembly (10) includes an abutment member (24) having a body (30) and an abutment part (35), with the abutment part (35) locatable in a selected one of a plurality of positions to adjust the position of the abutment member (24) to aid in accommodating variations in dimensions of the frame and assembly inaccuracies. rrn &COIL

Description

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A LOCK FOR A SLIDING WINDOW

FIELD

[0001] The present invention relates to locks for sliding doors or windows and more particularly but not exclusively to locks that include a lock cylinder.

BACKGROUND

[0002] Described in Australian Patent 2008207688 is a lock for a sliding door or window, having a frame and a sliding panel. The lock includes a base that is pivotally attached to the sliding panel, with the base moved angularly between a first position engaging the frame to inhibit movement of the sliding panel, and a second position spaced from the frame thereby enabling the sliding panel to be moved.

[0003] The base is retained in the first position by operation of a lock barrel, the lock barrel moves an abutment member between a first position abutting the sliding panel, retaining the base engaged with the frame, and a second position providing for pivoting movement of the base so the frame can be released.

[0004] A problem with previous locks is that they fail to accommodate variations in dimensions of various frame members and assembly inaccuracies.

[0005] The invention of above numbered Australian patent addresses the above disadvantage.

[0006] The lock of the above Australian patent provides an adjustment mechanism in respect of the abutment member that extended between the base and the sliding panel. However these adjustment mechanisms are reasonably complex, difficult to assemble and therefore has the disadvantage of adding considerably to the cost of the lock.

OBJECT

[0007] It is the object of the present invention to overcome or substantially ameliorate the above disadvantage. 12023873 1:hxa ο (Ν > Ο (Ν r- r- (Ν Ό (Ν Ό Ο (Ν

SUMMARY OF INVENTION

[0008] There is disclosed herein a lock for a sliding door or window, the door or window including a fixed frame and a sliding panel supported in the frame, the lock including: a base to be pivotally mounted on the panel for angular movement between a first position engaging the frame to at least inhibit movement of the panel relative to the frame, and a second position of non-engagement with the frame thereby providing for movement of the panel relative to the frame, the base having a first recess and a second recess that intersects with the first recess; an abutment member mounted in the first recess for movement relative to the base in a predetermined direction between a retracted first position and an extended second position, the abutment member in the first position permitting angular movement of the base, while in the second position, being adapted to engage the panel to prevent movement of the base from the base first position to the base second position; a lock barrel mounted in the second recess and operable to retain the abutment member in the second position to prevent pivoting movement of the base about the pivot axis; and wherein said abutment member includes a body having an abutment part supported on the base for adjustable movement relative to the body, the abutment part being positioned to engage the panel, and wherein the abutment part is moved in a direction generally transverse of said predetermined direction.

[0009] Preferably, the abutment part is locatable in a selected one of a plurality of predetermined positions located at locations in said transverse direction.

[0010] Preferably, the abutment part and the body have co-operating guide means which retain the abutment part at the selected one of said predetermined positions.

[0011] Preferably, said body has at least one recess, and said abutment part a projection located in said recess to locate said abutment part in selected one of said predetermined position.

[0012] Preferably, said body has a surface inclined by an acute angle to said transverse direction, and said abutment part has a surface also extending at said acute angle to said transverse direction, with the surfaces engaged to determine the selected one of the predetermined positions of the abutment part relative to said body. 12023873 1:hxa Ό Ο (Ν > Ο (Ν Ο ο (Ν (Ν Η Ο (Ν

BRIEF DESCRIPTION OF DRAWINGS

[0013] Preferred forms of the present invention will now be described by way of example with reference to the accompanying drawings: [0014] Figure 1 is a schematic parts exploded isometric view of a lock for a sliding door or window; [0015] Figure 2 is a schematic parts exploded isometric view of a further lock to be used with a sliding door or window; [0016] Figure 3 is a schematic isometric view of the lock of Figure 2; [0017] Figure 4 is a parts exploded isometric view of an abutment member employed in the lock of Figure 3; [0018] Figure 5 is a schematic top plan view of the abutment member of Figure 4; [0019] Figure 6is a schematic isometric view of the abutment member of Figure 4 assembled; [0020] Figure 7 is a schematic top plan view of the abutment member of Figure 4 in a first configuration; [0021] Figure 8 is a schematic top plan view of the abutment member of Figure 4 in a second configuration; and [0022] Figure 9 is a schematic top plan view of the abutment member of Figure 4 in a third configuration. 12023873 1:hxa ο (Ν > Ο ΙΟ (Ν

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DESCRIPTION OF EMBODIMENTS

[0023] In the accompanying drawings there are schematically depicted two locks 10. The lock 10 of Figure 1 and the lock 10 of Figure 2 are substantially the same in respect of the way they operate. However the base 17 of each of the two locks 10 is different in configuration.

[0024] Each lock 10 is intended to be mounted on a vertical frame member of a sliding panel. The sliding panel would be the sliding panel of a sliding door or window, and would be slidably supported by a surrounding fixed frame. In particular, each lock 10 would be intended to engage an adjacent fixed frame member to prevent movement of the sliding panel relative to the fixed frame member.

[0025] Each lock 10 includes the abovementioned base 17 that is pivotally mounted on a vertical panel frame member of the sliding panel, for angular movement about a generally upright pivot axis 18. The axis 18 extends longitudinally of a recess formed in the panel frame member. The base 17 is therefore pivotally mounted on the sliding panel, and is angularly movable about the axis 18 between a first position and a second position. The base 17 when in the first position is clear of the fixed frame, while the base 17, when in the second position, is engaged with the fixed frame member to retaining the sliding panel in the closed position.

[0026] The base 17 includes a handle 19 that is gripped by a user to cause angular movement of the base 17 about the axis 18, as well as aiding the user in causing sliding movement of the sliding panel.

[0027] The base 17 has a mounting flange 20 providing a longitudinally extending bead 21 that is substantially circular in transverse cross section and that extends along the axis 18. The bead 21 is located in a recess of the panel frame member so as to be angularly and longitudinally slidable therein, with the flange 20 projecting through a slot leading to the recess.

[0028] The bead 21 and slot provide for angular movement of the base 17 in angular direction 22 about the axis 18.

[0029] The base 17 has a first recess 23 that receives an abutment member 24 for sliding generally linear movement in direction 25. The direction 25 is generally normal to and spaced from the axis 18. Thus the abutment member 24 is movable along a generally linear path normal 12023873 1:hxa ο (Ν > Ο ΙΤ) (Ν (Ν Ό (Ν Ό Ο (Ν to the axis 18. The base 17 has a second recess 26 that receives a lock cylinder barrel 27. The barrel 27 has a longitudinal axis 28, about which the barrel 28 moves angularly by operation of a key. The barrel 27 has a cam member (projection) 29 spaced from the axis 28 and that is engaged with the abutment member 24.

[0030] By operation of the key, the cam member 29 is moved angularly through 180° about the axis 28 to provide for movement of the abutment member 24 in the direction 25. The recesses 23 and 26 intersect so as to provide for communication therebetween so that the cam member 29 can engage the abutment member 24.

[0031] The abutment member 24 has a body 30 that is generally planar and has an aperture 31 into which the cam member 29 projects. The aperture 31 is surrounded by surfaces of the body 30, the surfaces 30 being a linear surface 32 and an arcuate surface 33.

[0032] As best seen in Figure 1, the abutment member 24 is positioned to engage a flange of the fixed frame. More particularly the abutment member 24 is movable between an extended position at which it engages the sliding panel frame member, and a retracted position at which is it located substantially within the recess 23.

[0033] The cam member 29 is movable between positions A and B (see Figure 7). By operation of the key, the cam member 29 slides along the surface 33 between the two positions. In the position A the abutment member 24 is urged to engage the flange of the panel frame by the springs 44. However a force applied to the body 30 will cause the abutment member 24 to retract into the recess 23 due to the loss motion between the cam member 29 and the body 30. Accordingly, the base 17 is free to pivot. Thus the window or door can be opened. The window or door can be locked closed by use of the key causing angular movement of the cam member 29 about the axis 28, until it reaches the position B. In this position the cam member 29 retains the abutment member 24 in an extended position, that is adjacent or engaging the flange of the sliding panel frame member preventing pivoting of the base 17 about the axis 28. This retains the barb 43 of the base 17 engaged with the flange of the adjacent fixed frame member.

[0034] To provide for variations in the dimensions of the frame members, the abutment member 24 includes an abutment part 35. 12023873 1:hxa ο (Ν > Ο ΙΟ (Ν ΙΟ (Ν (Ν Ό Ο (Ν [0035] The abutment part 35 is mounted on the body 30 but is adjustable transverse of the direction 25 (direction of movement of the abutment member 24). Transverse movement of the abutment part 35 increases or decreases the total length 39 of the abutment member 24 in the direction 25.

[0036] In this embodiment the body 30 and abutment part 35 have co-operating recesses and projections. Most preferably, the body 30 has a pair of recesses 36 that provide a plurality of slots 37. Received within the recess 36 are projections 38 of the abutment part 35. In particular the projections 38 can be located in selected slots 37 to locate the abutment part 35 at a desired position relative to the body 30. As best seen in Figures 7, 8 and 9, by selecting a desired engagement of slots 37 and projections 38 the abutment part 35 can be located in a selected one of three predetermined positions. In the position of Figure 7, the overall length 39 of the abutment 24 is at its maximum. In Figure 9, the overall length is at its minimum.

[0037] In particular, the body 30 provides a ramp surface 40 that is inclined by an acute angle to the direction 25, while the abutment part 35 has a ramp surface 41 extending at the same acute angle so as to match the inclination of the surface 40. By relative movement between the surfaces 40 and 41, the length 39 can be varied.

[0038] The above described preferred embodiment provides a relatively simple and easy adjustment mechanism for the lock 10, in accommodating variations in dimensions of the frame and sliding panel. 12023873 1:hxa

Claims

CLAIMS:

1. There is disclosed herein a lock for a sliding door or window, the door or window including a fixed frame and a sliding panel supported in the frame, the lock including: a base to be pivotally mounted on the panel for angular movement between a first position engaging the frame to at least inhibit movement of the panel relative to the frame, and a second position of non-engagement with the frame thereby providing for movement of the panel relative to the frame, the base having a first recess and a second recess that intersects with the first recess; an abutment member mounted in the first recess for movement relative to the base in a predetermined direction between a retracted first position and an extended second position, the abutment member in the first position permitting angular movement of the base, while in the second position, being adapted to engage the panel to prevent movement of the base from the base first position to the base second position; a lock barrel mounted in the second recess and operable to retain the abutment member in the second position to prevent pivoting movement of the base about the pivot axis; and wherein said abutment member includes a body having an abutment part supported on the base for adjustable movement relative to the body, the abutment part being positioned to engage the panel, and wherein the abutment part is moved in a direction generally transverse of said predetermined direction.
2. The lock of claim 1, wherein the abutment part is locatable in a selected one of a plurality of predetermined positions located at locations in said transverse direction.
3. The lock of claim 2, wherein the abutment part and the body have co-operating guide means which retain the abutment part at the selected one of said predetermined positions.
4. The lock of claim 2 or 3, wherein said body has at least one recess, and said abutment part a projection located in said recess to locate said abutment part in selected one of said predetermined position.
5. The lock of claim 2, 3 or 4, wherein said body has a surface inclined by an acute angle to said transverse direction, and said abutment part has a surface also extending at said acute angle to said transverse direction, with the surfaces engaged to determine the selected one of the predetermined positions of the abutment part relative to said body.