“Pillar (car)”的意思、由来-开放百科全书

Pillars are the vertical or near vertical supports of a car's window area or greenhouse—designated respectively as the A, B, C or (in larger cars) D-pillar, moving from front to rear, in profile view.

The consistent alphabetical designation of a car's pillars provides a common reference for design discussion and critical communication. As an example, rescue teams employ pillar nomenclature to facilitate communication when cutting wrecked vehicles, as when using the jaws of life.^[1]

The B pillars are sometimes referred to as "posts" (two-door or four-door post sedan).^[2]^[3]^[4]

Design

In the case of the B (or center) pillar on four-door sedans, the pillar is typically a closed steel structure welded at the bottom to the car's rocker panel and floorpan, as well as on the top to the roof rail or panel.^[5] This pillar provides structural support for the vehicle's roof panel and is designed for latching the front door and mounting the hinges for the rear doors.^[5]

As the most costly body components to develop or re-tool, a vehicle's roof and door design are a major factor in meeting safety and crash standards.^[6] Some designs employ slimmer, chamfered windscreen pillars, A pillars, to help improve driver vision (thus reducing blind spots) through the use of stronger alloy steel in these components.^[6] As "perhaps the most complex of all the structures on the vehicle", the center or B-pillar may be a multi-layered assembly of various lengths and strengths.^[7]

Closed vehicles without a B-pillar are widely called hardtops and have been available in two or four-door body styles, in sedans, coupes and wagons.^[8] Designs without a center or "B" pillar for roof support behind the front doors offer increased occupant visibility, while in turn requiring underbody strengthening to maintain structural rigidity.^[9] In the early 1970s, General Motors broadened their definition of "hardtop" to include models with a B-pillar although: "up to then, everybody thought a hardtop was a car without a center pillar."^[10]

Pillars are implied, whether they exist or not; where a design's greenhouse features a break between windows or doors without vertical support at that position, the non-existent pillar is "skipped" when naming the other pillars. Thus a two-door hardtop or a three box designed coupé could have its rearmost pillar called the C-pillar even in the absence of a B-pillar. Conversely additional doors, such as on limousines, will create additional B-pillars; the B-pillars are then numbered, B1, B2, and so forth.

In addition to the pillar nomenclature derived from viewing an automobile in profile, some older cars have a two-part windshield or a split rear window, with the two halves separated by a pillar. Posts for quarter windows (a smaller window typically between the front window and the windshield) are not considered a named pillar.

See also

References

1. ^{{cite book|url= https://books.google.com/books?id=Wn39puc4bUgC&pg=PA142&dq=door+and+side+procedures+roof+posts+automobile+pillar |pages=141–143 |title=Vehicle extrication: a practical guide |first=Brian G. |last=Anderson |publisher=PennWell |year=2005 |accessdate=12 September 2014}}
2. ^{{cite book|url= https://books.google.com/books?id=QYluBgAAQBAJ&pg=PA26&dq=Postwar+American+sedans,+with+two+doors+or+four,+can+be+recognized+by+the+B-pillar,+or+“post,”+located+between+front+and+rear+side |title=Chevy Chevelle Fifty Years |first=Mike |last=Mueller |isbn=9780760346532 |publisher=Motorbooks |year=2015 |page=26 |quote=Postwar American sedans, with two doors or four, can be recognized by the B-pillar, or “post,” located between front and rear side glass. |accessdate=22 May 2016}}
3. ^{{cite book|url= https://books.google.com/books?id=H8xZbs2G17QC&pg=PA313&lpg=PA313&dq=The+variant+available+was+a+two-door+'post',+or+B-pillar,+version+of+the+sedan+body+that+really+offered |page=313 |title=Holden Vs Ford: The Cars, the Culture, the Competition |first=Steve |last=Bedwell |publisher=Rockpool |isbn=9781459619906 |year=2009 |accessdate=22 May 2016}}
4. ^{{cite book|url= https://books.google.com/books?id=Txbx3Y2mDL4C&pg=PA14&lpg=PA14&dq=The+two+Pettys+alternated+between+a+1959+Plaza+two-door+post+sedan+and+a+Savoy+two-+door+hardtop |page=14 |title=The cars of the king: Richard Petty |first=Tim |last=Bongard |first2=Bill |last2=Coulter |publisher=Sports Publications |year=2001 |isbn=9781582613178 |quote=The two Pettys alternated between a 1959 Plaza two-door post sedan and a Savoy two- door hardtop. |accessdate=22 May 2016}}
5. ^¹{{cite book|url= https://books.google.com/books?id=kXcNH5XwNHIC&pg=PA172&dq=automobile+pillar |page=172 |title=Complete automotive estimating |first=Robert |last=Scharff |first2=Keith |last2=Mullen |first3=John A. |last3=Corinchock |publisher=Delmar Publishers |year=1990 |isbn=9780827335851 |accessdate=12 September 2014}}
6. ^¹{{cite web|url= http://www.carpoint.com.au/car-review/2850216.aspx |title=Slimmer Commodore windscreen pillars coming |first=Joe |last=Kenwright |date=4 November 2007 |publisher=Carpoint Australia |accessdate=12 September 2014}}
7. ^{{cite book|url= https://books.google.com/books?id=ASUXAAAAQBAJ&pg=PA479&dq=The+B+pillar+is+perhaps+the+most+complex+of+all+the+structures+on+the+vehicle+because+of+how+it+is+tied+into+the+roof+and+the+rocker+panels |pages=479–480 |title=Collision Repair and Refinishing: A Foundation Course for Technicians |edition=Second |first=Alfred |last=Thomas |first2=Michael |last2=Jund |year=2013 |publisher=Cengage Learning |isbn=9781285687032 |accessdate=12 September 2014}}
8. ^{{cite journal|url= https://books.google.com/books?id=uOEDAAAAMBAJ&pg=PA116&dq=%22Hardtop+sedan%22+style |title=Rambler has everything new - even a hardtop wagon |journal=Popular Mechanics |date=January 1956 |pages=116–117 |volume=105 |issue=1 |accessdate=12 September 2014}}
9. ^{{cite book|title=Collision repair and refinishing: a foundation course for technicians |first=Alfred |last=Thomas |first2=Michael |last2=Jund |page=164 |publisher=Cengage Learning |year=2009 |isbn=978-1-4018-8994-4 |url= https://books.google.com/books?id=Hj4w-gPIT_kC&pg=PA164&dq=Hardtop+automobile+style |accessdate=12 September 2014}}
10. ^{{cite journal |last=Lund |first=Robert |title=Detroit Listening Post — same cars, different label |journal=Popular Mechanics |volume=141 |issue=6 |page=42 |date=June 1974 |url= https://books.google.com/books?id=YdQDAAAAMBAJ&pg=PA42&dq=definition:+Automobile+pillar |accessdate=12 September 2014}}

Design

See also

References

External links