CN206107363U - Floor board of adjustable length - Google Patents

Abstract

The utility model relates to an automobile structure, in particular to an automobile floor structure. A car floor with adjustable length, the car floor includes a front floor and a rear floor; the rear end of the front floor and the front crossbeam of the rear floor are designed to reserve an overlapping overlapping surface margin, and the front floor and the rear floor are overlapped and passed through Spot welded together. The utility model has low cost and simple welding, and can effectively solve the problem of different wheelbase lengths.

Description

A length-adjustable car floor

technical field

The utility model relates to an automobile structure, in particular to an automobile floor structure.

Background technique

my country's automobile industry is developing rapidly, and at the same time, the requirements for the development and design of automobile structures are getting higher and higher. Based on the development cycle of several years for conventional automobiles, it cannot meet the ever-changing requirements of customers, and it is difficult to be in a favorable position in the ever-changing market competition. The current automobile development tends to develop in the direction of platform sharing, short cycle and low cost. For the design requirements of models with different wheelbases on the same platform, the conventional method needs to change large parts such as front and rear floors or front and rear longitudinal beams, but the overall change of front and rear longitudinal beams and front and rear floors will greatly increase the development cost and development cycle.

Contents of the invention

The utility model provides a vehicle body floor structure with short development period, simple structure, convenient operation and low cost, which can meet the requirements of different wheelbase lengths of the same platform.

The technical purpose of the utility model is achieved through the following technical solutions: a car floor with adjustable length, the car floor includes a front floor and a rear floor; Surface allowance, the front floor and the rear floor are joined together by spot welding after being lapped.

In the length-adjustable car floor, the seat front crossbeam, the seat rear crossbeam and the middle channel reinforcing plate are welded above the front floor, and the middle channel reinforcing plate is provided with welding through holes.

In the length-adjustable automobile floor, the lower side beam of the middle channel and the rear extension plate of the front longitudinal beam are welded under the front floor.

In the length-adjustable automobile floor, the rear floor front beam, the upper reinforcement plate of the rear floor front beam and the lower reinforcement plate of the rear floor front beam are welded on the rear floor.

In the length-adjustable car floor, there are sill inner panels and sill inner panel extension panels in turn on both sides of the front and rear floors, and the sill inner panel extension panels are connected to the floor by spot welding.

The body floor of the utility model is divided into a front floor and a rear floor; welding holes are opened on the reinforcement plate of the middle channel to meet the welding requirements; the lower side beam of the middle channel and the rear extension plate of the front longitudinal beam are welded under the front floor; the rear floor is welded on the rear floor Front crossbeam and rear floor front crossbeam upper reinforcement plate and rear floor front crossbeam lower reinforcement plate; front and rear floors are connected by spot welding; sill inner panel extension plate and floor are connected by spot welding; rear end of front floor and rear floor front crossbeam are reserved for design According to different wheelbase requirements, the overlap margin of the front and rear floors can be adjusted, and then the length of the entire floor can be adjusted to meet different wheelbase requirements.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described:

Fig. 1 is the top view of the utility model automobile floor structure;

Fig. 2 is the bottom view of the automobile floor structure of the present utility model.

detailed description

As shown in Figure 1 and Figure 2, a car floor structure, the floor structure is designed with a front floor 1, made of low carbon steel, the material thickness is 0.7-1.2mm, the yield strength is 110-300MPa, and the tensile strength is 250-450MPa;

The front floor 1 is welded with a seat front beam 2 and a seat rear beam 3, which are connected by spot welding, and the number of welding points is 20-300. The seat front beam 2 and the seat rear beam 3 are made of high-strength steel The thickness of the material is 0.8-2.5mm, the yield strength is 180-1200MPa, and the tensile strength is 300-1500MPa;

The middle channel reinforcement plate 7 is welded in the middle of the front floor 1, and the middle channel reinforcement plate 7 is made of high-strength steel, the material thickness is 0.8-2.5mm, the yield strength is 180-1200MPa, and the tensile strength is 300-1500MPa. The middle reinforcing plate 7 is connected with the front floor 1, the front beam 2 of the seat and the rear beam 3 of the seat by spot welding, and the number of welding points is 20-200. The rear end of the middle channel is designed with a welding plane lap surface, the length of the lap surface is 14-300mm; there are welding via holes on the lap surface, the number of holes is 2-20, and the diameter of the hole is 12mm-40mm;

The lower part of the front floor 1 is welded with the front longitudinal beam rear extension plate 10 and the middle channel lower side beam 11, the front longitudinal beam rear extension plate 10 and the middle channel lower side beam 11 are made of high-strength steel, and the thickness of the material is 0.8-2.5mm , The yield strength is 180-1200MPa, and the tensile strength is 300-1500MPa. The rear extension plate 10 of the front longitudinal beam and the side beam 11 of the middle channel are connected with the front floor 1 by spot welding, and the number of welding points is 20-300;

The car floor structure is designed with a rear floor 6, the material thickness is 0.7-1.2mm, the yield strength is 110-300MPa, and the tensile strength is 250-450MPa;

The rear floor 6 is welded with a rear floor front beam 8 and a reinforcement plate 12 under the rear floor front beam. The rear floor front beam 8 and the rear floor front beam lower reinforcement plate 12 are made of high-strength steel, and the material thickness is 0.8-2.5 mm, the yield strength is 180-1200MPa, and the tensile strength is 300-1500MPa. The rear floor front beam 8 and the rear floor front beam lower reinforcing plate 11 are connected to the rear floor 6 by spot welding, and the number of welding points is 20-300.

The front beam 8 of the rear floor is welded with a reinforcing plate 7 on the front beam of the rear floor. The reinforcement plate 7 on the front beam of the rear floor is made of high-strength steel. The material thickness is 0.8-2.5mm, and the yield strength is 180-1200MPa. The tensile strength is 300-1500MPa. The reinforcement plate 7 on the front beam of the rear floor is connected with the front beam 8 of the rear floor by spot welding, and the number of welding points is 6-50. The front end of the reinforcing plate 7 on the front crossbeam of the rear floor is designed with a welding plane lap surface, the length of the lap surface is 14-300mm; there are welding via holes on the lap surface, the number of holes is 2-20, and the diameter of the hole is 12mm -40mm;

The car floor structure is designed with a sill inner panel 5, which is made of high-strength steel with a material thickness of 0.8-2.5mm, a yield strength of 180-1200MPa, and a tensile strength of 300-1500MPa.

The sill inner plate 5 is welded with a sill inner plate extension plate 9, which is made of high-strength steel, the material thickness is 0.8-2.5mm, the yield strength is 180-1200MPa, and the tensile strength is 300 -1500MPa. The threshold inner plate extension plate 9 is connected with the threshold inner plate 5 by spot welding, and the number of welding points is 3-20;

The front floor 1, the rear floor 6 and the threshold inner panel 5 are connected by spot welding, and the number of welding points is 50-500;

The automobile floor structure meets the design requirements of different wheelbases by adjusting the length of the overlapped overlapping surface between the rear end of the front floor 1 and the front end of the rear floor 6 .

Claims (5)

1. A length-adjustable automobile floor is characterized in that, described automobile floor comprises front floor and back floor; The rear floors are joined together by spot welding after lapping. 2. The length-adjustable automobile floor according to claim 1, characterized in that, the seat front crossbeam, the seat rear crossbeam and the middle channel reinforcing plate are welded above the front floor, and the middle channel reinforcing plate is provided with welding through holes . 3. The length-adjustable automobile floor according to claim 1, characterized in that, the lower side beam of the middle channel and the rear extension plate of the front longitudinal beam are welded under the front floor. 4. The length-adjustable automobile floor according to claim 1, characterized in that, the rear floor front beam, the upper reinforcement plate of the rear floor front beam and the lower reinforcement plate of the rear floor front beam are welded on the rear floor. 5. The length-adjustable automobile floor according to claim 1, characterized in that there are sill inner panels and sill inner panel extension panels in sequence on both sides of the front and rear floors, and the sill inner panel extension panels are connected to the floor by spot welding.