A RACK ARRANGEMENT

Abstract: A rack arrangement for supporting a load, for example above the roof of a vehicle body, comprises a pair of substantially parallel elongate guide members (3) each having a lower upwardly extending portion (3 a ) and an upper load supporting portion (3 b ). A load carrier member (4) is rockably connected to the guide members and is manually slidable from a lowered position upwardly along the lower guide member portions (3 a ) onto the supporting portions (3b) to a load storage position. The load carrier enables an operator to move a load from a convenient height onto supporting portions (3 b ) which would normally be out of reach.

Description: The present invention relates to rack arrangements for supporting loads and, more particularly, to a rack arrangement which includes a facility to move a load to a load storage position as specified in the preamble of claim 1, for example as disclosed in FR-A-2399366. With known rack arrangements such as roof racks carried by vehicle bodies, loads may have to be lifted onto the racks by hand. In cases where the racks are on high roofed vans or lorries, persons loading the racks may have difficulty when handling awkward loads such as multi-section ladders. The known vehicle roof rack arrangement includes a facility to move a load to a load storage position. In this known arrangement there are two substantially parallel elongate tubular rails mounted on the vehicle, with each rail having a lower upwardly extending portion and an upper load supporting portion. A trolley for carrying a load comprises wheels which rest on the rails so that the trolley can run along the rails. The trolley is connected to a manually operable winching mechanism by, for example, straps. When the trolley is in a lowered position it can be pulled along the rails up the side of the vehicle to the load supporting portions at the load storage position on top of the vehicle by operation of the winching mechanism and retained in the storage position by hook means. When the hook means are released, the trolley can be lowered by the winching mechanism to the lowered position whereat the trolley may be loaded or unloaded. According to one aspect of the invention, a rack arrangement comprises two substantially parallel elongate guide members each having a lower upwardly extending portion and an upper load supporting portion; a load carrier member manually movable from a lowered position upwardly along the lower guide member portions onto the supporting portions to a load storage position; and means for releasably retaining the carrier member in the load storage position, characterised in that the carrier member comprises a mounting member having two apertures through which respective ones of the guide members extend whereby the carrier member is slidably mounted on the guide members, each aperture being lined with or formed from a friction reducing material and surrounding the respective one of the guide members with sufficient clearance so that the mounting member is in loose, rockable and slidable engagement with the guide members, whereby the load carrier member can be lifted manually between the lowered position and load storage position. The provision of clearance allows the mounting member, which may be in the form of an apertured plate, to be relatively loosely connected to the guide members to allow the carrying member to be waggled about or rocked to a limited extent from side-to-side and back and forth with respect to the guide members. Thus the mounting member can be slid along the guide members without the apertures and guide members having to be exactly coaxially disposed to each other. The carrier member may have depending handle means to facilitate sliding it upwardly onto the supporting portions of the guide members. The handle means may be so disposed as to lie between the lower portions of the guide members when the carrier member is in the load storage position. Conveniently, the releasably retaining means is in the form of a cup-like recess which locates the base of the handle means. An adjustable strap means may be provided for securing a load to the carrier member when in the storage position, conveniently with the strap means being tensionable over guide means which are provided on the carrier member, and on depending handle means if present, to assist in retaining the carrier member in the storage position. Advantageously, the carrier member comprises means to retain a load in position thereon whilst the carrier member is being slid from the lowered position upwardly onto the supporting portions of the guide members. In one embodiment, the means to retain the load may be an upstanding post, over which, for example, a load may be hung. The carrier member may be inclined to the vertical when in the lowered position and relatively more horizontally disposed when in the load storage position. The carrier member may be in the form of a tray-like load-receiving member. The guide members may be connected to means to facilitate fixing the arrangement to a body to support the arrangement. When in the load storage position, the load carrying portions of the carrier member may lie in a plane substantially common to the supporting portions of the guide members such that a supported load may also rest directly on the supporting portions as well as on the load carrying portions. From another aspect, the invention also consists in a rack combination which comprises a pair of rack arrangements, each as defined above, wherein the two arrangements are disposed with respect to each other such that the carrier members are capable of carrying different parts of a common load and are operable to cooperate in moving the common load to the load storage position. For example, a pair of rack arrangements may be provided on one side only of a vehicle body, with the supporting portions of the guide members having depending legs fastened to the roof of the vehicle body. Each carrier member may, for example, be in the form of a tube or a bar and cooperate to support an elongate load, such as a ladder. From a further aspect, the invention also comprises a back-to-back rack combination comprising two rack combinations, each as defined above, wherein the supporting portions of the guide members of each rack arrangement of one pair of arrangements are joined to respective support members of the other pair of rack arrangements. From a still further aspect, the invention comprises a vehicle body having mounted thereon a rack arrangement, a rack combination or a back-to-back arrangement, as defined above, with the supporting portions of the guide members extending over the roof of the vehicle. The rack arrangement and rack combinations may be mounted on supporting bodies other than vehicle bodies. The rack arrangements and combinations according to the invention may be supplied as kits of parts which may have accompanying instructions for assembly and fixing on to a supporting body such as a vehicle body. The invention will now be described, by way of example, with reference to the accompanying drawings, in which: Figure 1 is a view showing from one end the outline of part of a vehicle body having mounted thereon one embodiment of back-to-back rack arrangement according to the invention, and Figure 2 is a view from one side of part of the vehicle body shown in Figure 1 as seen in the direction of arrow "A" in Figure 1 with the adjustable strap and mounting element therefor omitted. Referring to the drawings, on each side of a vehicle body 1 there is mounted a pair of rack arrangements 2, each arrangement comprising two spaced substantially parallel elongate guide members 3 and a load carrier member 4 slidably mounted on the guide members. The guide members 3 and carrier members 4 are of rigid tubular construction and may be made of aluminium alloy. The lower ends of the guide members are connected to a metal plate 5 which is fastened to the vehicle body 1 by fastening means 6. One or more cushioning elements such as rubber pads 7 may be located between the plate 5 and vehicle body to protect the latter from damage. From the plate 5 the tubular guide members 3 provide lower upwardly extending portions 3 a , spaced from the side 8 of the vehicle body, which then bend round to form supporting portions 3 b which extend slightly upwardly over, and are spaced from, the roof 9 of the body. Supporting portions 3 b of the guide members of each rack arrangement of one pair on one side of the vehicle body integrally join with respective supporting portions 3 b of the other pair of rack arrangements on the other side of the vehicle body. Each carrier member 4 is disposed centrally of the associated guide members 3 and is of angular form, one limb of which provides a load carrying portion 11 and the other limb of which provides a depending integral handle 12. The end of the carrying portion 11 remote from the handle 12 is rigidly connected, for example by welding to a mounting plate 13, made for example of steel, which connects the carrier member to the guide members. The plate 13 slidably mounts the carrier member 4 on the guide members 3 by means of two apertures 14 each provided with a friction-reducing bush 15, made for example of plastics material, to facilitate sliding of the plate 13 along the guide members 3. Each aperture 14 accommodates a respective one of the guide members 3 with clearance so that the carrier member 4 is rockable to a limited extent, with respect to the guide members 3, from side-to-side and back and forth. With reference to the drawings, that is movement back and forth in the plane of the paper and also into and out of the plane of the paper. In the present embodiment the clearance is provided by ensuring that the diameter of the apertures 14, with the bushes 15 present, is sufficiently larger than the external diameter of the tubular guide members 3 for the plate 13 to be a loose fit on the guide members. By means of the handle 12, which may have a rubber foot 16 on its free end, the carrier member 4 can be manually slid from a lowered position, as shown in broken lines in Figure 1, upwardly along the lower guide member portions 3 a and onto the supporting portions 3 b to the load storage position as shown in the drawings. In the storage position the mounting plate 13 connected to the guide member bears on the supporting portions 3 b whilst the end of the handle 12 has been releasably located in a cup-like recess 17 provided on the metal plate 5 between the lower ends of the guide members. The location of the handle 12 in the cup-like recess 17 retains the carrier member 4 in the load storage position, whereas the load carrying portion 11 of the carrier member is disposed at a level above the supporting portions 3 b of the guide members whilst the handle lies in a plane substantially common with the two lower portions 3 b of the guide members. In the present embodiment each carrier member 4 has an upstanding pin or post 18 over which a ladder 19 can be placed when the carrier member 4 is in the lowered position, as shown in outline in Figure 1. If the ladder 19 is placed in this manner on both of the carrier members 4 on the same side of the vehicle body, then the ladder will be retained on the two carrying portions 11 when they are raised independently but generally at the same time by two persons each operating a different one of the two carrier members. Thus the carrier members 4 can be moved to the load supporting position whereat the ladder is stowed on the carrying portions 11 which are clear of the vehicle roof. Since the carrier members 4 are rockable on the guide members 3, as described above, the likelihood of the carrier members binding on the guide members is reduced as they are moved therealong. To further secure both the carrier member 4 and the ladder 19 in the load storage position, an adjustable tensioning strap 20 is provided, which is releasably fastened at one end to the mounting plate 13 and at the other end to a mounting element 21 secured to the vehicle body, as shown on the right hand side of Figure 1. The fastening may be by means of hooks at the ends of the strap (not shown) which pass through apertures (not shown) in the mounting plate 13 and in the mounting element 21. The adjustable strap 20 is tightened over strap guide means in the form of open channel-like elements 22 provided on the outside of the angle between the handle 12 and the load carrying portion 11 of the carrier member, and on the cup-like handle-locating recess 17. When there is no load on the carrier member 4, tensioning of the strap 20 secures the carrier member alone in the load storing position.

Claims: 1. A rack arrangement comprising two substantially parallel elongate guide members (3) each having a lower upwardly extending portion (3a) and an upper load supporting portion (3b); a load carrier member (4) manually movable from a lowered position upwardly along the lower guide member portions (3a) onto the supporting portions (3b) to a load storage position; and means (17) for releasably retaining the carrier member (4) in the load storage position, characterised in that the carrier member (4) comprises a mounting member (13) having two apertures (14) through which respective ones of the guide members (3) extend whereby the carrier member (4) is slidably mounted on the guide members (3), each aperture (14) being lined with or formed from a friction reducing material (15) and surrounding the respective one of the guide members (3) with sufficient clearance so that the mounting member (13) is in loose, rockable and slidable engagement with the guide members (3), whereby the load carrier member (4) can be lifted manually between the lowered position and the load storage position. 2. A rack arrangement as claimed in claim 1, wherein the carrier member (4) has depending handle means (12) to facilitate sliding it upwardly onto the supporting portions (3b). 3. A rack arrangement as claimed in claim 2, wherein when the carrier member (4) is in the load storage position the handle means (12) lies between the lower portions (3a) of the guide members. 4. A rack arrangement as claimed in claim 3, wherein the releasably retaining means (17) is in the form of a cup-like recess which locates the base (16) of the handle means (12). 5. A rack arrangement as claimed in any of the preceding claims, wherein said carrier member (4) comprises means (18) to retain a load in position thereon whilst the carrier member (4) is being slid from the lowered position upwardly onto the supporting portions (3b). 6. A rack combination comprising a pair of rack arrangements (2) as claimed in any of the preceding claims, wherein the two arrangements are disposed with respect to each other such that the carrier members (4) are capable of carrying different parts of a common load and are operable to cooperate in moving the common load to the load storage position. 7. A back-to-back rack combination comprising two rack combinations as claimed in claim 6, wherein the supporting portions (3b) of the guide members (3) of each rack arrangement of one pair are joined to respective supporting portions of the other pair of rack arrangements. 8. A vehicle body having mounted thereon a back-to-back rack combination as claimed in claim 7, with the supporting portions (3b) extending over the roof of the vehicle and the upwardly extending portions (3a) extending up opposite sides of the vehicle.

Inventors: DAINTY, ROBIN KEITH
Applicants: BRITISH GAS PLC
Application year: 1988
Main classification: B60R9
IPC codes: B60R9