The body of the VAZ-2121 car is closed, load-bearing. The body is made of all metal and is the main load-bearing element of the car
The engine, transmission and suspension elements are attached to the base of the body.
The body does not have a rigid spatial frame.
In order for the body to have a certain rigidity, its individual parts are made of the appropriate shape and cross-section.
The car body has three doors: two front and rear.
The body has a one-piece steel body, to which the engine hood, front and rear doors and decorative details (radiator trim, front and rear bumpers, decorative trims, etc.) are attached.
Inside the body there are seats for passengers and the driver and there is a luggage compartment;
Removable body parts: 1 - radiator grille; 2 - car emblem; 3 - front bumper trim; 4 - front bumper trim holder; 5 - side trim of the front bumper; 6 - front bumper bracket; 7 - front bumper; 8 - front bumper connector; 9 - hood; 10 - edging of the windshield seal; 11 - windshield; 12 - windshield seal; 13 - rear door glass seal; 14 - rear door glass; 15 - edging of the rear door glass seal; 16 - tailgate; 17 - edging of the glass seal of the side window; 18 - side window glass; 19 - side window glass seal; 20 - rear bumper trim; 21 - rear bumper trim holder; 22 - side trim of the rear bumper; 23 - rear bumper bracket; 24 - rear bumper; 25 - rear bumper connector; 26 - door glass edging; 27 - door glass; 28 - door glass seal; 29 - door; 30 - outside rear view mirror
The body shell is a rigid welded structure consisting of separate pre-assembled units: the base (floor) with the front part of the body, the left and right sidewalls of the rear wings, the roof, the rear part of the body and the front wings.
The body base consists of front and rear panels. It is reinforced with spars and cross members.
The front and rear parts of the body are connected to the base.
The front part includes the front shield, panels, mudguard, the rear part includes panels and mudguards.
The sides of the body are all stamped. They have openings for doors and windows.
The roof of the body is also one-piece stamped.
It is made together with the opening for the wind window.
Noise insulation of the body is ensured by applying anti-noise mastic and bitumen sheet gaskets with high noise-absorbing properties to the surface of the base.
The entire front part of the cabin and the floor of the body is covered with textile-bitumen gaskets with high sound-absorbing properties.
For thermal and noise insulation of the roof, its inner surface is covered with gaskets made of super-thin fiberglass reinforced with resins.
The body door (front, rear) consists of outer and inner stamped panels connected to each other.
The front door is suspended in the body opening on hinges.
In the closed position, it is held by a special lock, which prevents the door from opening arbitrarily when moving.
The door has a limiter that limits the opening angle of the door and ensures its fixation in the open position.
The front door window consists of two parts made of safety tempered glass, which breaks into small fragments when broken.
The larger part of the window is a sliding glass, and the smaller part is a turning glass.
The sliding glass moves in special guides using a window lifter, which is installed inside the door.
The window regulator is a gear mechanism with a cable drive that ensures raising, lowering and fixing the glass in any position.
The front door has an outside handle that does not protrude from the outer door panel, which reduces the likelihood of injury to pedestrians in road accidents.
The rear door opens upward and is held in the open position by special gas-filled stops.
The door has a window consisting of one fixedly installed safety glass.
The door is equipped with a lock that holds it in the closed position.
Attachment points for chassis units: 0 - base lines; 1 - center of the steering mechanism; 2 - axis of the brake and clutch pedals; 3 - steering wheel shaft axis; 4 - mounting of rear suspension shock absorbers; 5 - rear wheel axle; 6 - front pipe fastening main muffler; 7 - rear mount of the main muffler; 8 - lower radiator mount; 9 - upper radiator mount; 10 - fastening of the front suspension cross member; 11 - center of differential; 12 - wheel center; 13 - mounting of the anti-roll bar; 14 - mounting the rear suspension of the power unit; 15 - transfer case fastening; 16 - hand brake mount; 17 - front fastening of the longitudinal rods of the rear suspension; 18 - rear fastening of longitudinal rods; 19 - mounting of rear suspension shock absorbers; 20 - fastening of the transverse rod of the rear suspension; 21 - front mount of the main muffler; 22 - fastening the exhaust pipe of the main muffler
Window and side windows are installed in the body openings along with rubber seals and special decorative edging.
The windshield is curved, panoramic, triplex type, consists of two thin polished glasses glued together with a transparent elastic film between them.
Such glass does not lose transparency, does not break into small fragments upon impact, and is safer than tempered glass.
The side windows are flat and made of safety tempered glass.
The hood covers the top of the engine compartment, located in the front of the car.
The hood consists of an outer panel and internal reinforcements connected to each other.
It is attached to the body with two loops.
The hood opens forward and is fixed in the open position with a special stop.
The hood is equipped with a lock that keeps it in the closed position.
The lock is unlocked from inside the body with a special handle installed under the instrument panel and connected to the lock by a cable drive.
The seats in the car body are installed in two rows.
The front seat is separate and consists of two separate chair-type seats with headrests.
For ease of seating for the driver and passenger, each seat is adjustable in the longitudinal direction and in the angle of the backrest.
Moreover, each seat is independently adjustable, independently of each other.
Checking body geometry
A significant part of body repair work occurs on damaged vehicles, which require checking the geometry of the attachment points of chassis components and assemblies.
Figure 2 shows the dimensions of the body geometry points.