SG185562A1

SG185562A1 - Door latch assembly

Info

Publication number: SG185562A1
Application number: SG2012083689A
Authority: SG
Inventors: Jon Perrins; Gerard Ryan
Original assignee: Steel Storage Holdings Pty Ltd
Priority date: 2010-05-21
Filing date: 2011-04-20
Publication date: 2012-12-28
Also published as: JP2013529268A; AU2011256116B2; WO2011143687A1; KR20130115088A; CN103124825A; EP2572065A4; AU2011256116A1; EP2572065A1

Abstract

A door latch assembly particularly for use.in doors in self storage facilities. The door latch assembly comprises a latch, handle and locking arrangement in a single assembly. The assembly can be recessed to be substantially flush with the face of the door so as not to protrude into a passageway. The latch assembly can be inverted for right or left hand use. The assembly includes a base plate (1 1) having a grip aperture (18), a tongue (12) with a protruding grip portion (19) at the distal end from the locking end, a back guide (13) to locate and retain the tongue (12) with the base plate (1 1 ), said back guide (13) is fixable to the base plate (1 1), a handle member (14) comprising a finger grip recess (29) fixable to the base plate (1 1), wherein when assembled the grip portion (19) protrudes through the grip aperture (18) and the tongue (12) can slide between a laterally extended and a non-extended position relative to the base plate. The assembly further includes holes (22, 22, 25, 25) to accommodate the shackle of a padlock. On the base plate (1 1) adjacent the grip aperture (18) is two tabs (20, 21) with holes (22) which can align with two tabs (23, 24) also with holes (25) on the grip portion (19), when the holes align at either the extended or non-extended positions, the shackle of a padlock can pass through the aligned holes (22, 22, 25, 25) and lock the tongue (12) from moving.

Description

. * DOOR LATCH ASSEMBLY

FIELD OF INVENTION

- The present invention relates to latches and locks for doors. ‘The present ~ 5 invention has particular but not exclusive application for doors in warehouses and storage facilities including self-storage facilities. The invention will be described in. h the specification with reference to self-storage facilities but this is by way of example. ~ only and the invention is not limited to this example. oo BACKGROUND OF THE INVENTION :

A self-storage facility usually consists of a building with multiple partitioned units where a person renting the space can store their goods. Each unit usually has - a door to access the internal space and is lockable to secure the stored goods. The oo door of each unit usually opens to a corridor that can connect with other corridors to provide a person with access to their storage space and allow a trolley loaded with their goods to pass there along. oo The units are usually built to one of several standard sizes to enable repeatable modular construction and rapid installation. The corridors are relatively narrow to make use of the maximum usable space. However, door handles, latches 20 . and locks often protrude outwardly from the doors into the corridor causing safety problems and interference with the mobility of the trolleys. As. well, the door handle and latch are separately located thereby compounding the problem. There is currently no satisfactory way to address these problems, oo oo Co Co a. | oo . OBJECT OF THE INVENTION itis an object of the present invention to provide a door latch assembly that oo can be used on a door that overcomes at least in part one or more of the aforementioned problems. Co © SUMMARYOFTHEINVENTION oo

BE In one aspect the present invention broadly resides in a door latch assembly including oo | | Co a base plate having a grip aperture; oo | a tongue with a protruding grip portion; = ~~ aback guide to locate and retain the tongue with the base plate, said back ) © guideis fixable to the base plate; and oo oo | . - - ahandle member fixable to the base plate, wherein when assembled the grip ) portion protrudes through the grip aperture and the located and retained tongue can’

Lo 15 slide between a laterally extended and non-extended position relative to the base plate. : i} B - oo | - :

Ina preferred form the base plate 5 recessed with a proud peripherally lip portion. The grip aperture and the handle member are preferably located in the

SR section of the base plate. oo - C- a I | Co The base plate is preferably substantially rectangular. More preferably the base plate is substantially rectangular with one end having a curved or arcuate shape. Preferably the tongue extends laterally from the curved or arcuate shaped . : Preferably the base plate has at least one plate lug with an aperture andan - 25 associated grip lug with an aperture, wherein when the tongue is laterally extended the respective apertures align, thereby allowing a padlock or the like to be positioned oo

Co through the apertures to lock the tongue relative to the base plate. More preferably ‘there are two plate lugs each of which has an aperture and-two associated grip lugs . } each of which has an aperture, wherein when the tongue is laterally extended each corresponding plate lug aperture and grip lug aperture align to provide two position a options for locking the latch assembly. I. oo | ) oo oo ) - : The two plate lugs and the two grip lugs are preferably arranged to provide a a . ) locking position when the base plate and assembled latch assembly is in eithera ~~.

Lo | normal or inverted position to accommodate right hand and eft hand opening doors. } ; 10 | - Preferably the arip portion is retained within the grip aperture and the Lo ) | movement of the grip portion is limited by the opposing peripheral edges of the grip : aperture. LL oo | oo BN oo Co ae The base plate is preferably fixable to the back guide by one oF more IE : co fasteners. Preferably there are four fasteners positionable near corners of the Co - 15 ‘substantially rectangular base plate. Preferably the fasteners are bolts with locking | Co

Co nuts. Preferably the fasteners are also used to fix.the door latch assembly to the - door. oo | : | oo | oo SE

Preferably the handle member is positionable adjacent the curved end of the EE © base plate. Preferably the handle member is substantially arcuate with an internal | - recess to serve as a hand grip. Preferably one or more of the fasteners fixing the oo

Co base plate to the back guide fix the handle member to the base plate. ) oo There is preferably a keyed lock mountable to the base plate to provide an a | alternative or complementary lock.. The keyed lock preferably locks the tongue oo relative to the base plate. ‘The keyed lock is preferably positioned between the grip BET : aperture and the handle member. The keyed lock is preferably a bezel-type lock.

Co The door latch assembly of the current aspect preferably includes different oo oo combinations and permutations of the preferred features and optional features - described above. ) 3 - : Preferably the door latch assembly can be used with swing doors, sliding | : | doors and roller doors. | | Co ) N : in another aspect the invention broadly resides in a door with the door latch - : ~~ assemblyas described above. This aspect includes all the variations and ~~ . combinations of the door latch assembly as described above ~~ . ) oo

CL Preferably the door has a recess for the positioning of the door latch assembly so thatthe peripheral lip of the base plate is substantially flush with the face of the door when assembled and fitted to the door. Co } | oo ) Co . oo | oo Preferably the door has one or more stiffening members extending I the . = i | width of the door. More preferably there is at least one stiffening member | 3 B ] positionable within the door frame and at least in-part fixed in position by the one or more fasteners which fasten the door latch assembly to the door. | Co oo - BRIEF DESCRIPTION OF THE DRAWINGS | | - ) | "In order that the present invention can be more readily understood reference will now be made to the sccoripanyiig drawings which illustrates a preferred embodiment of the invention and wherein: I oo Co oo ) - ~ Figure 1 is a diagrammatic front side view of the assembled door latch asseinbly of the preferred embodiment | ) oo =

Figure 2 is a diagrammatic front view of the assembled door latch assembly of : : the preferred embodiment: | oo | oo

Co Figure 3 is a diagrammatic. rear side view of the assembled door latch a assembly of the preferred embodiment; | | SE . } | Figure 4 is a diagrammatic rear view of the assembled door latch assembly of ; the preferred embodiment; | oo | | - | oo } Lo

Figure 5 is a diagrammatic right side view of the assembled door latch assembly of the preferred embodiment; Co . k - | oo ~ Figure 6 is a diagrammatic top view of the assembled door latch assembly of - the preferred embodiment; : | ) oo oo Figure 7 is an exploded view of the assembled door latch assembly of the | preferred embodiment; oo | BN ) ) )

Co Co Figure 8 is a diagrammatic front view of a door with the assembled door latch assembly of the preferred embodiment; and ) ) - - : | Figure 9 sa diagrammatic rear view of a door with the assembled door latch | oo . assembly of the preferred embodiment. oo oo SU - oo : DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT = } | With reference to figures 1 to 6, there is shown an assembled door latch oo oo assembly 10 which includes base plate 11, tongue 1 2, back quide 13 and handle 14. Lo oo ~The base plate 11 is substantially rectangular with a curved end portion 16. The oo base plate I has a raised peripheral ip 17. The base plate 11 has a grip aperture

B 18 through which projects 2 grip portion 19 from the tongue 12. The grip portion 19 3 ) can move within the grip aperture 18 so that when the grip portion 19 is in a forward oo position the tongue 12 is laterally extended and when the grip portion 19 is in a . rearward position, the tongue 12s retracted. oo i B ) -

. Plate lugs 20, 21 are formed from a punched and bent section of the base

Co | plate 11. Each of the plate lugs 20, 21 have an aperture 22, There are also two grip . | ‘lugs 23, 24 which extend laterally in opposite directions from opposing ends of the | oo

Co grip portion 19. Each of the grip igs 23, 24 have an aperture 25. When the grip Co portion 19 is moved forward and the tongue 12 is laterally extended, the plate lugs

So 20 and 21 overlap the grip lugs 23 and 24 respettively so that the apertures 22 and a i 25 are aligned to allow the placement of a padlock or the lke. ) - . The handle 14 is positioned adjacent the curved end portion 16. The handle Lo - | 14 has a recess 29 to provide a finger grip to assist with the opening and closing of the door. The handle 14 is preferably made of plastics material. The hande 14 is ;

SR symmetrically shaped s0 that when the handle 14 is fixed to the base plate 11, the baseplate 11 can be inverted and the handle 14 can provide the same functionality. . © The back guide 13 is positionable on the rear face of the base plate 11. The back guide 13 is substantially elongate with a longitudinal channel 30 that ~~ Co accommodates the tongue 12. During assembly the tongue 12 is retained by the ~~ ~ back guide 13. BR | oo

The tongue 12 is a substantially elongate arm that includes a grip portion 19 Co at one end and an angled section 31 at the opposing end. With further reference to : B figure 7, the grip portion 19 includes 5 two part grip section 32 with a grip support 33 - that has the laterally extending grip lugs 23, 24. The tongue 12 also has a lock ~.. aperture 36 where a locking pin can project there through. The handle 14 and back ) > guide 13 are fixed inthe assembled position with the base plate 11 by fasteners 33 oo and nuts 34. The fasteners 33 and nuts 34 are also used to mount the latch EE assembly 10tothe door. So B

} In the figures there 5 also shown a keyed lock housing 35 substantially ~~. ) | centrally located on the base plate 11. A bezel type lock can be fitted to the keyed lock housing 35to provide additional security to lock the latch assembly 10, Within oo . the keyed lock housing 35, the base plate 11 has an aperture to enable a locking pin : to project from the bezel type lock and through the tongue aperture 36. oo | The door latch assembly 10 can be positioned on the right hand side or left : “hand side of the door depending on how the door opens. The door latch assembly ’

Co 101s positioned so that the curved end portion 16 is adjacent the opening edgeof - oo the door. Because of the symmetry in the design of the door latch assembly, the | same door latch assembly 10 can be used for both left hand and right hand opening - | by inverting the door latch assembly 10. The symmetry of the design substantially : oo oo resides in the base plate 11, the grip portion 19 and associated plate lugs 20, 21 and the handle 14. The door latch assembly 10 provides the advantage that only one SE - ’ | door latch assembly is required rather than having the need to have a right hand and a left hand door latch. . - oo oo

With reference to figures 8 and 9, there is shown a door 40 with a door latch . ‘assembly 10 attached thereto. In figure 8, a front surface 41 of the door40is - oo “shown. The door latch assembly 10 is positioned within a recess (not shown) in the: . front surface #1 of the door 40 so that the lip 17 of the door latch assembly 10 is ) | . oo 20 substantially flush with the front surface 41. With the door latch assembly 10 being substantially flush with the front surface a, there are no outwardly extending SR projections or sharp edges to cause injury or interference with a person walking past - oo or opening the door 40. In addition the flush finish provided by the door latch oo : assembly 10is comparatively more aesthetically pleasing than current latches.

. ~

In figure 9, the rear side 42. of the door 40 is shown. The door 40is . oo | strengthened by three horizontally positioned ribs 43 spaced apart from each other.

The ribs 43 are substantially u-shaped with an internal channel. There isarb43 positioned adjacent the top of the door 40, bottom of the door 40 and substantially in the middle of the door 40. The middle rib 45 is in part fixed in position by the oo mounting fasteners 3 and huts 34 for the door latch assembly 10. With the Co oo fastening by fasteners 33 and nuts 34, the middle rib 45 can be positioned by direct placement rather than sliding into position from either the top or bottom ends. The

Cl use of fasteners 33 and nuts 34 avoids the need for the middle rib 45 to fit tightly

By 10 within the opposing turned door ends and thus avoid the associated problems of oo fastening or gluing the middle rib 45 in position. co - - oo © ADVANTAGES | oo -, KE The preferred embodiment of the present invention provides a door with a atch, handle and locking arrangement. in a single assembly. | Furthermore the oo preferred embodiment of the latch assembly is recessed so as fo not protrude into

Co the corridor or interfere with passage along the corridor. The preferred embodiment of the latch assembly can be inverted to accommodate both fight hand and left hand opening doors. - | So E EN | - - So oo © VARIATIONS So t will of course be realised that while the foregoing has been given by way of g - illustrative example of this invention, all such and other modifications and variations : - ; thereto as would be apparent to persons skilled in the art-are deemed to fall within - the broad scope and ambit of this invention as is herein set forth. oo - SE

- oo B Throughout the description and claims this specification the word “comprise” ) oo : and variations of that word such as “comprises” and “comprising”, dre not intended to exclude other additives, components, integers or steps. a oo

Claims

. 0- CLAMS oo 1. Adoor latch assembly including . a a base plate having a grip aperture; a tongue with 2 protruding grip portion;. | : Lo | a back guide to locate and retain the tongue with the base plate, said back oo guide is fixable to the base plate; and a handle member fixable to the base plate, wherein when assembled the grip’ oo Cs | portion protrudes through the grip aperture and the located and retained tongue can : 3 10 slide between a laterally extended and non-extended position relative to the base : plate. Co

- 2. A door latch assembly according to claim 1 wherein the base plate ® oo recessed with a proud peripherally lip portion. | . oo Co | oo

3. © Adoor latch assembly according to claim 2 wherein the grip aperture and the oo “handle member are located in the recess section of the base plate. oo . Co oo 4, A door latch assembly according to any one of claims Tto 3 wherein the base oo 20 plate is substantially rectangular with one end having a curved or arcuate shape. . oo 5 A door latch assembly according to claim 4 wherein the tongue extends laterally from the curved or arcuate shaped end.

6. | A door latch assembly according to any one of claims 1to0 5 wherein the base oo plate has at least one plate lug with an aperture and an associated grip lug with an EB | aperture, wherein when the tongue is laterally extended the respective apertures : align, thereby allowing a padlock or the like to be positioned through the apertures to lock the tongue relative to the base plate. ~ oo 7. A door latch assembly according to claim 6 wherein the base plate has two plate lugs each of which has an aperture and two associated grip lugs each of which - N has an aperture, wherein when the tongue is laterally extended each corresponding Co plate lug aperture and grip lug aperture align to provide two position options for locking the latch assembly.

8. | A door latch assembly according to claim 7 wherein the two plate lugs and the ~ two grip Jugs are arranged to provide a locking position when the base plate and assembled latch assembly is in either a normal or inverted position to accommodate ) - | right hand and left hand opening doors. oo Co ) : 9 A door latch assembly according to any one of claims 1 to 8 wherein the grip © portion is retained within the grip aperture and the movement of the grip portion is limited by the opposing peripheral edges of the grip aperture. So oo

10. A door latch assembly according to.any one of claims 1 to 8 wherein the base - plates fixable to the back guide by one or more fasteners.

1. A door latch assembly according to any one of claims 4 to 10 wherein the oo base plate is fixable to the back guide by four fasteners positionable near corners of the substantially rectangular base plate.

12. A door latch assembly according to claim 11 wherein the fasteners are also used to fix the door latch assembly to the door. oo 13. A door latch assembly according to any one of claims 4 to 12 wherein the oo handle member is positionable adjacent the curved end of the base plate. _ oo oo Co SE Lo Co

1a. A door latch assembly according to claim 13 wherein the handle member is - : substantially arcuate with an internal recess to serve as a hand grip. oo 15. A door latch assembly according to claim 10 wherein the one or more of the fasteners fixing the base plate to the back guide fix the handle member to the base - . plate. oo - | : oo

16. Adoor latch assembly according to any one of claims 1 to 15 wherein there is a keyed lock mountable to the base plate to provide an alternative or complementary : 20 lock.

17. A door with a door latch assembly according to any one of claims 1 to 1 6. N g 18. A door with a door latch assembly according to any one of claims 2 to 16

_. wherein there is a recess for the positioning of the door latch assembly so that the ~~

L13- peripheral lip of the base plate is substantially flush with the face of the door when - assembled and fitted to the door. | . h

CL 19. A door according to claim 17 or claim 18 wherein the door has one or more stiffening members extending across the width of the door.”

oo 20. A door according to claim 19 wherein thére is at least one stiffening member :

- positionable within the door frame and at least in-part fixed in position by one or

- more fasteners which fasten the door latch assembly to the door. . So oo