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Vehicle Chassis, Vehicle Body and Vehicle

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Vehicle Chassis, Vehicle Body and Vehicle (19) TZZ ¥__T (11) EP 2 427 361 B1 (12) EUROPEAN PATENT SPECIFICATION (45) Date of publication and mention (51) Int Cl.: of the grant of the patent: B62D 21/04 (2006.01) 11.09.2013 Bulletin 2013/37 (86) International application number: (21) Application number: 10723737.2 PCT/GB2010/000907 (22) Date of filing: 06.05.2010 (87) International publication number: WO 2010/128297 (11.11.2010 Gazette 2010/45) (54) VEHICLE CHASSIS, VEHICLE BODY AND VEHICLE SUSPENSION FAHRGESTELL, FAHRZEUGKORPUS UND FAHRZEUGAUFHÄNGUNG CHASSIS DE VEHICULE, CARROSSERIE DE VEHICULE, ET SUSPENSION DE VEHICULE (84) Designated Contracting States: (74) Representative: Chettle, Adrian John et al AL AT BE BG CH CY CZ DE DK EE ES FI FR GB Withers & Rogers LLP GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO 4 More London Riverside PL PT RO SE SI SK SM TR London SE1 2AU (GB) (30) Priority: 07.05.2009 GB 0907880 (56) References cited: (43) Date of publication of application: EP-A1- 0 653 344 WO-A1-03/102489 14.03.2012 Bulletin 2012/11 WO-A1-2010/118248 AU-B2- 703 896 DE-A1- 19 631 715 DE-A1- 19 860 562 (73) Proprietor: Ricardo Uk Limited FR-A1- 2 179 890 US-A- 5 833 269 West Sussex BN43 5FG (GB) US-A1- 2007 186 762 (72) Inventor: JACOB-LLOYD, Roland Warwickshire CV31 1FQ (GB) Note: Within nine months of the publication of the mention of the grant of the European patent in the European Patent Bulletin, any person may give notice to the European Patent Office of opposition to that patent, in accordance with the Implementing Regulations. Notice of opposition shall not be deemed to have been filed until the opposition fee has been paid. (Art. 99(1) European Patent Convention). EP 2 427 361 B1 Printed by Jouve, 75001 PARIS (FR) 1 EP 2 427 361 B1 2 Description riously compromised, and additional measures to deal with consequences can result in new problems. For ex- [0001] This invention relates to a chassis for a wheeled ample improved cooling arrangements for the engine, vehicle, to a vehicle body and mounting arrangements driveline and occupants may be difficult to site since con- thereof, and to a novel vehicle suspension. The present 5 ventional vehicles have optimized space utilization be- inventions are particularly suitable for military vehicles, fore adaptation to military use. but also have non-military application. [0010] Suspension arrangements for 4wd vehicles can [0002] Military vehicles have a number of special re- be complex in order to give good road holding and com- quirements including high mobility over rough terrain, fort. For a military vehicle a simple arrangement is ac- adaptability of purpose, ease of maintenance and resist- 10 ceptable especially if giving improved serviceability at a ance to ballistic damage. Light vehicles have traditionally field workshop. One aspect of the present invention dis- been adapted from four- wheel drive (4wd) road vehicles, closes such a suspension arrangement, which is partic- and are poorly suited to military use in some respects. ularly suitable for the improved vehicle chassis disclosed [0003] Resistance to ballistic damage can be in- herein. creased by the use of additional layers of protective ma- 15 [0011] Military vehicles are expensive, and thus pref- terial, which are generally applied to the existing vehicle erably adaptable to different circumstances of use. For structure. Protection against blast damage from below is example some different military applications are patrol, typically by the use of armour plating on the vehicle un- logistics and fire support. A vehicle which is easily adapt- derside. However the application of such blast protection ed to different purposes would have significant advan- is generally compromised by the complex underside20 tages for a multi-role military force. shape of a conventional 4wd vehicle, and is at best a [0012] DE- A- 19860562 discloses a vehicle having a very shallow ’V’ shape so as to minimize loss of ground punt type chassis having a flat bottom and side walls clearance. Typically such additional protection is above which are angled upwardly and outwardly. Internal par- the driveline. tition walls are provided. An electro- chemical power [0004] A particular difficulty with conventional protec- 25 source is envisaged, with wheel motors. tion is that whilst blast damage can be resisted to some [0013] FR- A- 2179890 discloses a dray having a low extent, the force of the blast may be sufficient to lift a ground clearance. The bottom of the vehicle is in the form vehicle high into the air leaving the occupants vulnerable of a shallow V with flat central portion. to a hard landing. Even a modest blast may be sufficient [0014] US 2007/186762 discloses an armoured vehi- to overturn a vehicle, leaving it immobile with the occu- 30 cle with a hull affixed to a frame having a generally dia- pants at risk. mond shaped vertical cross section. [0005] What is required is a vehicle better able to resist [0015] DE 19631715 discloses a protective system at- blast damage. tached to the underside of a vehicle, whereby a free [0006] A second difficulty is that damaged light vehi- space is formed between the deflector and the underside cles can be complex and awkward to repair in the field, 35 of the vehicle. since they are generally derived from road vehicles which [0016] According to the present invention there is pro- are optimized for different circumstances of use. In par- vided a spine-type chassis of a vehicle and a vehicle ticular chassis repair may require very substantial dis- body (21), said chassis comprises a single open trough mantling of the vehicle, and may thus be practically im- having a substantially ’V’ section and substantially possible to achieve in a field workshop. 40 straight flanks closer together at the bottom than at the [0007] What is required is an improved vehicle chassis top, the trough having an apex and an included angle of better suited to field replacement. 100° or less, characterised in that the chassis is adapted [0008] Conventional 4wd vehicles generally have a to receive an engine and transmission therein, the chas- rather open flat underside with major driveline compo- sis further comprises mounts for the vehicle body, said nents mounted below. Blast protection to the vehicle45 mounts being annular and axially aligned on an axis ad- body typically leaves the driveline substantially exposed, jacent one of the sides of said trough at the mouth thereof, so that a vehicle may be immobilized by blast damage the vehicle body included on said mounts, said mounts thereto. In many cases effective shrouding of, for exam- permitting pivoting of said body about said axis. ple, rigid axles, is not possible without seriously affecting [0017] By transmission we mean the driveline compo- articulation thereof. Furthermore such shrouding may 50 nents between the engine and the means of rotating the prevent effective cooling and lead to mechanical failure vehiclewheels, typicallythe drive shafts ofa conventional due to overheating. A chassis adapted to protect major differential and final drive gear. Thus all major driveline driveline components but which permits adequate cool- components, namely engine, multispeed transmission ing would be a significant advance. and final drive gears are received within the trough chas- [0009] Yet another difficulty relates to overall vehicle 55 sis of the invention. weight. A typical 4wd road vehicle is heavy (c. 2.5 tonnes) [0018] The chassis is preferably symmetrical, and the before the application of protective materials such as ar- flanks thereof are preferably substantially flat. The chas- mour plating. The performance of the vehicle can be se- sis may have an included angle of less than 75°, and 2 3 EP 2 427 361 B1 4 most preferably less than 60°. The apex of the ’V’ may the manufacturing cost reduced. be rounded in order to give improved ground clearance. [0026] In a preferred embodiment the chassis is adapt- In the preferred embodiment no significant horizontal sur- ed to receive a driver module thereon, said module com- faces are provided, such as would provide lift of the ve- prising lower side portions directed inwardly so as to fit hicle in the event of a blast. 5 substantially flush with the flanks of the chassis. In this [0019] The chassis preferably has a substantially con- way the width of the module is progressively increased stant section throughout the length thereof. as a continuation of the chassis so that the lower side [0020] Typically the maximum width of the chassis is portions and flanks provide a substantially flush surface less than 70% of the track of a vehicle for which it is at an angle to the vertical. The driver module may have intended. 10 lower side portions at differing angles. Thus in a preferred [0021] Such a chassis is inherently adapted to protect embodiment the included angle within the wheel region engine and transmission from blast damage, and further- is narrower than in the region between the wheels. Such more to better resist vehicle lift and rollover by deflecting an arrangement gives greater clearance for escape of the blast from the angled flanks. The trough is adapted the pressure pulse and debris following a blast from a as a duct to make maximum use of cooling fluid forced 15 mine. therethrough, for example from a fan and/or air condi- [0027] The driver module is preferably connected to tioner blowing cooled air to a rear facing exhaust. the chassis via the long upper edges thereof so as to [0022] A chassis according to the invention preferably pivot about a fore and aft longitudinal axis in the manner has substantially closed ends, and can thus be inherently of a hinge.
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