GB1584114A

GB1584114A - Door handle lock and latch mechanism combination for corrugated roller doors

Info

Publication number: GB1584114A
Application number: GB1002378A
Authority: GB
Original assignee: Firmaframe Nominees Pty Ltd
Current assignee: Firmaframe Nominees Pty Ltd
Priority date: 1978-03-14
Filing date: 1978-03-14
Publication date: 1981-02-04

Description

(54) IMPROVEMENTS IN OR RELATING TO DOOR HANDLE LOCK AND LATCH MECHANISM COMBINATION FOR CORRUGATED ROLLER DOORS (71) We, FIRMAFRAME NOMINEES PROPRIETORY LIMITED, a Company incorporated under the laws of the State of Victoria, Australia, of 278 Bay Road, Sandringham, Victoria, Australia, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed to be particularly described in and by the following statement: This invention relates to an improved door handle lock and latch mechanism combination for corrugated roller doors.

Hitherto there have been many proposals for door handles and locks for roller doors and in such proposals particular attention has been made to a construction which is relatively thin such that when the door is rolled up, the thickness of the door handle lock and latch mechanism combination does not unduly influence the rolling of the door over the door roller. It will be appreciated that such problems only arise when the door handle lock and latch mechanism combination is situated some distance up from the bottom extremity of the door.

However the known constructions are still not entirely satisfactory.

According to one aspect of the present invention there is provided a door handle, lock and latch mechanism combination for a corrugated roller door comprising, a handle portion shaped to closely fit in a corrugation of the door which is open at the front face and extends inwardly towards the rear face of the door, said handle portion being of a size not to project unduly from the front face of the door, a lock in the handle portion and being of a size not to project unduly from the 'front face of the handle portion, and latch bar means for fitting in a rearwardly-open corrugation adjacent said corrugation in the front face of the door in which the handle portion is fittable and to connect with said lock through opening means in the wall of said corrugation in which the handle portion is fittable, the latch bar means being movable by operation of the lock to a position inwardly of the sides of the door to allow the door to be openable and to a position to extend outwardly of the side of the door to engage with latch engaging means associated with the door frame of the door whereby to lock the door with respect to the door frame.

According to another aspect of the invention, there is provided a door handle, lock and latch mechanism combination for a corrugated roller door comprising, a handle portion shaped to closely fit in a corrugation of the door which is open at the front face and extends inwardly towards the rear face of the door, said handle portion being of a size not to project unduly from the front face of the door, a lock in the handle portion and being of a size not to project unduly from the front face of the handle portion, and two latch bars for fitting respectively in rearwardly-open corrugations adjacent said corrugation in the front face of the door in which the handle portion is fittable and to connect with said lock through openings in the top and bottom walls of said corrugation in which the handle portion is fittable, the latch bars being movable by operation of the lock to a position inwardly of the sides of the door to allow the door to be openable and to a position where they extend outwardly of the sides of the door to engage, with latch engaging means associated with the door frame of the door whereby to lock the door with respect to the door frame.

In order that the invention can be more clearly ascertained the construction of a preferred embodiment fitted in a corrugated roller door will now be described with reference to the accompanying drawings in which: Figure 1 is a front perspective view of the assembly; Figure 2 is a front view of the assembly; Figure 3 is a top plan view of the assembly; Figure 4 is an end view of the assembly; Figure 5 is a rear view of the assembly showing the locking bars in the door locked position; Figure 6 is a rear view similar to figure 5 but showing the locking bars in the door unlocked position; Figure 7 is an end view along line 7-7 of figure 5; and Figure 8 is an end sectional view along line 8-8 of figure 5.

The assembly comprises a handle portion 1 mounted to closely fit in the front face of the door in a transverse corrugation 3 therein so as not to protrude unduly therefrom. The corrugation 3 is of known con figuration for roller shutter doors. The handle portion 1 is held to the door by screws 4 (see Figures 5 and 6). The handle portion 1 contains a lock 5 and a recessed handle 7 for the door extends rearwardly thereinto. The lock 5 is of known form and protrudes through the back face of the door through an opening 9 therein (see Figure 8).

The rear end of the lock 5 has a disc 11 integrally attached thereto so that when the lock barrel is rotated the disc 11 rotates therewith. Attached to the disc 11 are two arms 13. The arms 13 connect with the disc 11 by lugs 15 which extend from the disc 11, and these arms 13 are, in turn, fastened to locking bars 17 by similar lugs 19 on the locking bar 17. It will be noted from viewing Figures 5 and 6 that when the barrel of the lock 5 is rotated the bars 17 are either extended or retracted from the respective sides of the door, the upper bar 17 extend ing outwardly of the door to the right and the lower bar 17 outwardly to the left. To lock the door the barrel of the lock 5 is rotated so that the bars 17 are moved to the position shown in Figure 5 so that the bars 17 can locate in suitable openings in the door frame.

The bars 17 are guided in the corrugations 3 in the rear face of the door by openings 18 in each end of a plate member 18' which is secured to the door by screws 20 which pass into the housing 1.

A cover plate 21 covers the arms 13 so that they are not visible from the rear of the door.

The lock 5 has a key opening from the rear face into which a key for the lock can be inserted to open the door from the rear if desired.

It will be noted that the preferred assembly provides for a relatively thin handle lock and latch bar mechanism so that when the corrugated door is rolled up the thickness thereof does not unduly cause problems.

WHAT WE CLAIM lS:- 1. A door handle, lock and latch mechanism combination for a corrugated roller door comprising, a handle portion shaped to closely fit in a corrugation of the door which is open at the front face and extends inwardly towards the rear face of the door, said handle portion being of a size not to project unduly from the front face of the door, a lock in the handle portion and being of a size not to project unduly from the front face of the handle portion, and latch bar means for fitting in a rearwardlyopen corrugation adjacent said corrugation in the front face of the door in which the handle portion is fittable and to connect with said lock through opening means in the wall of said corrugation in which the handle portion is fittable, the latch bar means being movable by operation of the lock to a position inwardly of the sides of the door to allow the door to be openable and to a position to extend outwardly of the side of the door to engage with latch engaging means associated with the door frame of the door whereby to lock the door with respect to the door frame.

2. A door handle, lock and latch mechanism combination as claimed in claim 1 wherein the lock is a barrel lock, the axis of rotation being aligned to be perpendicular to the plane of the front face of the door.

3. A door handle, lock and latch mechanism combination as claimed in claim 2 wherein there is a disc mounted co-axial with the axis of rotation of the barrel on the rear end of the lock and arranged to rotate with said barrel and wherein the latch bar means connects with said disc via an arm member, pivotally attached to the disc and the latch bar means.

4. A door handle, lock and latch mechanism combination as claimed in claim 1 fitted in a corrugated roller shutter door.

5. A door handle, lock and latch mechanism combination for a corrugated roller door comprising, a handle portion shaped to closely fit in a corrugation of the door which is open at the front face and extends inwardly towards the rear face of the door, said handle portion being of a size not to project unduly from the front face of the door, a lock in the handle portion and being of a size not to project unduly from the front face of the handle portion, and two latch bars for fitting respectively in rearwardly-open corrugations adjaent said corrugation in the front face of the door in which the handle portion is fittable and to connect with said lock through openings in the top and bottom walls of said corrugation in which the handle portion is fittable, the latch bars being movable by operation of the lock to a position inwardly of the sides of the door to allow the door to be openable and to a position where they extend outwardly of

**WARNING** end of DESC field may overlap start of CLMS **.

Claims

**WARNING** start of CLMS field may overlap end of DESC **. Figure 2 is a front view of the assembly; Figure 3 is a top plan view of the assembly; Figure 4 is an end view of the assembly; Figure 5 is a rear view of the assembly showing the locking bars in the door locked position; Figure 6 is a rear view similar to figure 5 but showing the locking bars in the door unlocked position; Figure 7 is an end view along line 7-7 of figure 5; and Figure 8 is an end sectional view along line 8-8 of figure 5. The assembly comprises a handle portion

1 mounted to closely fit in the front face of the door in a transverse corrugation 3 therein so as not to protrude unduly therefrom. The corrugation 3 is of known con figuration for roller shutter doors. The handle portion 1 is held to the door by screws 4 (see Figures 5 and 6). The handle portion 1 contains a lock 5 and a recessed handle 7 for the door extends rearwardly thereinto. The lock 5 is of known form and protrudes through the back face of the door through an opening 9 therein (see Figure 8).

The rear end of the lock 5 has a disc 11 integrally attached thereto so that when the lock barrel is rotated the disc 11 rotates therewith. Attached to the disc 11 are two arms 13. The arms 13 connect with the disc

11 by lugs 15 which extend from the disc 11, and these arms 13 are, in turn, fastened to locking bars 17 by similar lugs 19 on the locking bar 17. It will be noted from viewing Figures 5 and 6 that when the barrel of the lock 5 is rotated the bars 17 are either extended or retracted from the respective sides of the door, the upper bar 17 extend ing outwardly of the door to the right and the lower bar 17 outwardly to the left. To lock the door the barrel of the lock 5 is rotated so that the bars 17 are moved to the position shown in Figure 5 so that the bars

17 can locate in suitable openings in the door frame.

The bars 17 are guided in the corrugations

3 in the rear face of the door by openings 18 in each end of a plate member 18' which is secured to the door by screws 20 which pass into the housing 1.

the sides of the door to engage with latch engaging means associated with the door frame of the door whereby to lock the door with respect to the door frame.

6. A door handle, lock and latch mechanism combination as claimed in claim 5 wherein the lock is a barrel lock, the axis of rotation being aligned to be perpendicular to the plane of the front face of the door.

7. A door handle, lock and latch mechanism combination as claimed in claim 6 wherein there is a disc mounted co-axial with the axis of rotation of the barrel on the rear end of the lock and arranged to rotate with said barrel and wherein the latch bars connect with said disc on diametrically opposite sides thereof and wherein each latch bar connects with the disc via an arm member pivotally attached to the disc and the latch bar.

8. A door handle, lock and latch mechanism combination as claimed in claim 6 fitted in a corrugated roller shutter door.

9. A door handle, lock and latch mechanism combination substantially as herein described with reference to the accompanying drawings.

10. A door handle, lock and latch mechanism combination fitted in a corrugated roller shutter door substantially as herein described with reference to the accompanying drawings.