- Sliding door (vehicle)
Sliding dooris a type of door that opens by sliding (usually horizontally), whereby the door is either mounted on or suspended from a track. These aren't usually used in small vehicles, but generally they're most commonly used for minibuses and busses to provide a large entrance or exit for passengers without obstructing the pavement. They are often used on the side of commercial vansas well, as this allows a large opening for equipment to be loaded and unloaded without obstructing access. [http://minivans.about.com/b/2007/01/29/in-praise-of-the-sliding-door.htm ] , Use of sliding doors in minivans and MPVs.] Sliding doors are often used in mini MPVs such as the Toyota Porteand Peugeot 1007and Renault Kangoo, but are more commonly used in full-sized MPVs like the Toyota Previa, the Citroen C8, the Peugeot 807, the Chrysler Voyagerand the Kia Sedona. [http://www.whatcar.com/news-special-report.aspx?NA=215543&EL=3128362] , What Car? talking about MPV's with sliding doors.] Their use has increased over the years as MPVs have increased in popularity, because it gives easy access and makes parking in tight spaces possible.
pocket dooris a sliding door that slides along its length and disappears, when open, into a compartment in the adjacent wall, or as in terms of vehicles, into the car's bodywork. Pocket doors are often used in architecture, but rarely in vehicles.
1953 Kaiser Motors
Kaiser was the first and only car manufacturer to feature pocket doors, although not all of their cars had pocket doors. [http://www.jaylenosgarage.com/your_garage/cars/7655.shtml] , jaylenosgarage.com talking about the Kaiser.] [http://www.significantcars.com/cars/1954kaiser/index.html] , Info on the Kaiser, with pictures.] To date, no other vehicle has utilised pocket doors. Their unique pocket doors slide tidily into the front fender, which leaves the vehicle looking a lot more aesthetically pleasing than the doors sliding outside of the bodywork.
The bonnets on these Kaisers are significantly longer than most bonnets, because the engine can't be transversly mounted as it has to have space for the doors to slide into. This means the car is longer than necessary and so less manoeuvrable.
A vertical door is a type of sliding door that slides vertically, usually on a rail or track.
1989 BMW Z1
The BMW Z1's unusual vertical-sliding doors are one of its most interesting features. The doors slide-vertically down into the car's
chassis. This means that they slide into a compartment within the car's body and so are also technically pocket doors, but they aren't classified as such because they don't slide along their length into an adjacent compartment. The inspiration for these doors came from traditional roadsters which often feature removable metal or cloth doors. Because removable doors did not fit within BMW's design goals, the vertical-sliding doors were installed instead.
Because the doors slide vertically downwards into the body, only the top halves of the sides of the car can be the doors, as they slide into the bottom half. The high sills can make entry and exit harder, although they do offer crash protection independent of the doors, so the vehicle may be legally and safely driven with the doors up or down. However, they are not legal in the
The windows can be operated independently of the doors, although they will automatically retract if the door is lowered. [http://www.bmwz1.co.uk/]
Lincoln Mark VIIIconcept car
Lincoln Mark VIIIconcept car's doors slide into the frame underbody and disappear from view. [http://jalopnik.com/cars/found-on-ebay/the-1993-lincoln-mark-viii-rolling-door-concept-car-hides-your-heavy-doors-276295.php] , A video of the door working.] By doing this, it eradicated the proble of a high door sill that the Z1 experienced. However, this design is much more complicated, so the risk of failure is increased. Also, all of the mechanisms to make the doors work add a significant amount of weight to the car, slowing it down, and making it less efficient.
This was designed because Lincoln executives were concerned about the large heavy doors on the Mark VIII and wanted to improve them, especially for cities with tight parking spaces. They had the idea of a Mark VIII that had doors that disappeared beneath the car and would require no additional space outside the car's
wheelbasefor the doors to open in order to allow people to enter or exit. At this time it was usual for the large car manufacturers to sub-contract their concepts to other companies who specialized in making concepts reality. In this case, this Mark VIII was sent to Joalto Design Inc.near Detroit. Joalto still holds many US Patents for with this vehicle's chassis and body construction. [http://www.ronsusser.com/vehicles.asp?c=da&id=857] , Ebay information and pictures.] [http://www.freepatentsonline.com/5524960.html] , One of Joalto's patents.] [http://www.freepatentsonline.com/4801172.html] , One of Joalto's patents.] [http://www.freepatentsonline.com/4940282.html] , One of Joalto's patents.] [http://www.freepatentsonline.com/5378036.html] , One of Joalto's patents.]
Joalto Design Inc. created this one-of-a-kind concept car and shipped it back to Lincoln for executive approval for production. Unfortunately, the executives didn't like the design and ordered for the car (and the concept) to be sent to the
scrapheapand destroyed. Fortunately the car wasn't destroyed, and it has recently (September 2007) been sold on Ebay.
List of cars with unusual door designs
* [http://jalopnik.com/cars/found-on-ebay/the-1993-lincoln-mark-viii-rolling-door-concept-car-hides-your-heavy-doors-276295.php A video of the Lincoln Mark VIII concept car's door]
* [http://www.freepatentsonline.com/3594036.html A patent for sliding doors on vehicles, made in 1971 by Citroen]
* [http://www.freepatentsonline.com/2622919.html A patent for vertically sliding doors on vehicles, made in 1952]
* [http://www.deftracing.com/faq_vls_door_tutorial.htm Automotive door styles]
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