GB2261255A

GB2261255A - Bushing for vehicle & freight door fastenings

Info

Publication number: GB2261255A
Application number: GB9223347A
Authority: GB
Inventors: Barry Peter Folkard
Original assignee: Bloxwich Engineering Ltd
Current assignee: Bloxwich Engineering Ltd
Priority date: 1991-11-07
Filing date: 1992-11-06
Publication date: 1993-05-12
Anticipated expiration: 2012-11-06
Also published as: KR930009847A; GB2261255B; GB9123617D0; GB9223347D0; KR100216244B1

Abstract

In a fastening mechanism for vehicle and freight container doors, a bush assembly (10, 11) in which a bar (1) is journalled for rotation is secured to a door by means of a bracket (21) generally of omega outline. A snap engagement is provided between complementary parts (14, 30) of the bush assembly and the bracket, whereby the bush assembly and the bracket are assembled with the bar (1) before the mechanism is mounted on and secured to the door. <IMAGE>

Description

IMPROVEMENTS IN FASTENING MECHANISM FOR DOORS This invention relates to improvements in fastening mechanisms for doors of vehicles and of freight containers for the carriage of goods by road, rail or sea.

Our invention is concerned with door fastening mechanisms of the kind in which a substantially vertical operating bar adapted to mounted in bearings on the door for angular movement about its axis carries on one or each end a fastening member for co-operation with a keeper on a door frame to which the door is hinged about one vertical edge, the bar being movable by a handle which can be positively locked in a position corresponding to the full engagement of the or each fastening member with its keeper.

Such fastening mechanism is herein referred to as fastening mechanism of the kind set forth.

In known fastening mechanism of the kind set forth the bearings are secured to the door by means of separate brackets, generally of omega outline, with flanges on the brackets on opposite sides of the bar being secured by the door by bolts or like fasteners.

Normally the fastening mechanism is secured to a door which has been previously painted or otherwise provided with a protective coating, suitably by galvanising.

Since the brackets comprise members separate from the bearings and the bar, difficulty may be experienced in positioning the various components accurately with respect to each other and with respect to the door before they can be actually secured to the door in an assembly position and without damaging the protective coating.

According to our invention, in a fastening mechanism of the kind set forth a bearing comprises a bush assembly in which the bar is journalled for angular movement about its axis, and the bush assembly is secured to the door by means of a bracket generally of omega outline with encircles an arcuate portion of the bush assembly and is provided with spaced flanges which are secured to the door at positions an opposite sides of the bar, a snap engagement being provided between complementary parts of the bush assembly and the bracket whereby the bush assembly and the bracket are assembled with the bar before the mechanism is mounted on and secured to the door.

This facilitates production since, with brackets attached to the bar by using bush assemblies as mountings, the whole fastening mechanism can be accurately positioned with respect to the door for subsequent securing thereto.

In one construction of assembly, a tag pieced from the material of the bracket is snapped over a rib on the bush assembly. Thus the bush assembly and the bracket are secured together against accidental removal, and the presence of the bracket provides a mounting for the bush assembly on the bar, particularly in a construction in which the bush assembly comprises a pair of complementary snap-on bushes.

One embodiment of our invention is illustrated in the accompanying drawings in which: Figure 1 is a perspective view of a fastening mechanism for doors of vehicles or freight containers; Figure 2 is a side elevation of a portion of the mechanism of Figure 2 including a bracket; Figure 3 is a plan of a portion of the bracket of Figure 2; Figure 4 is a section on the line 4-4 of Figure 3; and Figure 5 is a section on the line 5-5 of Figure 3.

The fastening mechanism illustrated in the drawings comprises a vertical operating bar in the form of a hollow tubular member 1 which is mounted in spaced bearings 2, 3, 4, 5 for angular movement about its axis on a door 6. The angular movement of the bar 1 is effected by a handle 7 welded or otherwise secured to the bar 1. Each end of the bar 1 carries a fastening member 8, 9 for co-operation with complementary keepers secured to the top and bottom of a door frame (not shown).

The two bearings 2 and 5 are similar in construction with the upper bearing 2 being illustrated in Figures 2-5 of the drawings.

As illustrated the bearing comprises a pair of complementary bushes 10, 11, each comprising a semi-cylindrical inner shell 12 at the upper end of a pedestal 13. The two bushes 10, 11 include co-operating fingers which snap together so that the two shells 12 co-operate to encircle the rod 1, and the pedestals co-operate with the door 6 to support the bar 1 a spaced distance above and from the door 6.

At least one of the pedestals 13, is adapted to include a rib 14 having a free end substantially parallel to and spaced from the base of the pedestal 13.

After the bushes 10, 11 have been assembled to the bar 1 as shown in Figure 4, a bracket 20 of omega outline is fitted over the so formed bush assembly.

The bracket 20 comprises an intermediate strap 21 having a position 22 of semi-cylindrical outline which is extended at its free ends into spaced limbs 23, 24, and the limbs, themselves, are directed away from each other to define a pair of mounting flanges 25, 26, each provided with spaced apertures 27, 28.

A tag 30 pierced from the limb 23 is defined inwardly at the end remote from the flange 25 for co-operation with the rib 14. Thus when the bracket 20 is fitted over the bush assembly as described above, the tag 30 is snapped over the rib 14, into a position in which the free end of the tag 30 engages with the rib 14.

Thus secures the bearing to the bar 1 against accidental removal and the bearings 2 and 5 are mounted on the bar 1 as an assembly by the brackets 20.

The fastening mechanism can then be secured to the door 6 in any the correct position by bolts passed through the openings 27, 28 in the flanges 26.

Claims

1. A fastening mechanism for vehicle and freight container doors in which a bearing comprises a bush assembly in which a bar is journalled for angular movement about its axis, and the bush assembly is secured to the door by means of a bracket generally of omega outline with encircles an arcuate portion of the bush assembly and is provided with spaced flanges which are secured to the door at positions an opposite sides of the bar, a snap engagement being provided between complementary parts of the bush assembly and the bracket whereby the bush assembly and the bracket are assembled with the bar before the mechanism is mounted on and secured to the door.

2. A fastening mechanism according to claim 1, characterised in that a tag pieced from the material of the bracket is snapped over a rib on the bush assembly.

3. A fastening mechanism according to claim 1 or claim 2, characterised in that the bush assembly comprises a pair of complementary semi-cylindrical shells.

4. A fastening mechanism according to claim 3, characterised in that the two shell include co-operating fingers adapted to snap together, and pedestal which co-operate with the door to support the bar a spaced distance from the door.

5. A fastening mechanism substantially as described herein with reference to and as illustrated in the accompanying drawings.