Why is the rear floor of the joint venture car protruding, but the domestic car is mostly flat? Insi

At this stage of automobile development, the car-making technology has been very mature, but the domestic car started very late, and there is a certain gap between the technology and the Japanese car and the German car, so the two are also different in the structure and layout of the car. Do you know why the rear floor of the car is raised, most of which are joint venture cars? How is the rear row of a domestic car flat?

Insiders tell you

There is a bulge in the middle of the rear seats of the joint venture car, which has an impact on the comfort experience of the car, especially when the seats are all filled, the person sitting in the middle is very uncomfortable, and the feet are uncomfortable anywhere. The rear bulge of the joint venture car is because the car was originally front-rear-wheel drive, and the car engine was in the front half, which was driven by the rear wheels.

When the structure of the car is fixed, this design is widely used in other models, and different types of cars may be completed by a car platform, so the appearance, interior, and materials are different, but the core car structure is the same, which is why most of the joint venture cars have rear protrusions. As for some two-wheel drive cars and four-wheel drive vehicles, this design has not been canceled, mainly because of cost savings and protection of the air pipe, and the manufacturer does not want to change the chassis design, so most joint venture cars have a bulge in the rear.

As for the flat rear row of domestic cars, first, the development of the automobile industry started late, so there is no need to explore step by step like a joint venture car, you can use the "take doctrine", anyway, everything is starting from scratch, and you can cancel the raised part of the rear row. Second, domestic consumers are very fond of large and wide cars, and domestic cars are originally somewhat passive in the market, so they will be designed in this way in order to cater to consumers.

In fact, the flat rear row improves the comfort of the ride, and also increases the interior space, which is a very humanized design. It's just that most of the cars with flat rear rows of domestic cars are in SUVs and MPVs, and other models also have the convex design of joint venture cars, but the proportion is not as much as that of joint venture cars.

Why are most of the rear floors bulging are joint venture cars, and domestic cars are flat? So that's it!

There are advantages and disadvantages to the flat and bulging middle floor in the rear of the car. Therefore, it is necessary to consider the advantages and disadvantages of the middle bulge in the back row from many aspects. The bulge in the rear of the car is mainly used to connect the propeller shaft.

Or the exhaust pipe is embedded in the body, and the disadvantage of this is that it compresses the rear space, making the rear seat less comfortable when riding. As more and more vehicles now adopt front-wheel drive systems, the rear wheel drive shaft is eliminated, and more and more cars have eliminated the rear bulge.

The benefit of the raised middle floor of the rear of the car is that it can first improve the hardness of the underbody. The rear bulge of the vehicle makes four creases appear in the chassis steel plate of the rubber bend car, which can improve the strength of the chassis and better protect the drivers and passengers in the car in the event of a collision; Secondly, make the body more beautiful. The rear bulge of the vehicle is mainly to embed the drive shaft or exhaust cylinder into the ground, so that the ground of the car can be more flat, and the whole car looks more sporty, so the protrusion of the middle floor of the rear branch of the car is also necessary, otherwise the exhaust pipe and the drive shaft are easy to hit directly on the road through the low terrain; Finally, the middle bulge in the middle of the rear row is high and low.

Some cars have a high bulge in the middle of the rear row, while some cars have a low bulge in the middle of the rear row. <>

Four creases are formed in the middle of the rear bulge of the car, which can increase the stiffness of the chassis, but also compress the rear space, which has both advantages and disadvantages. <>

Nowadays, cars are basically front-wheel drive, in order to make the car more beautiful, so many cars must embed the exhaust pipe of the car into the body, so that the rear row of the car has a bulge. <>

Generally speaking, the chassis of a sedan is low, and the rear bulge is relatively high, while SUV and other off-road vehicles have a relatively high chassis, so the rear bulge is lower.

The bulge is better, but the situation in the middle of the chassis of different cars is completely different, and the bulge shows that the exhaust system is exposed in this place, which will not affect the normal content of the car, so that the chassis is relatively high, and after driving to the bumpy road, it will not affect the chassis of the car; If it is flat, the configuration is relatively low, and the car is rarely equipped with a flat plate.

The middle floor of the rear row of the car is flat, because it is not only beautiful, but also more convenient, and there is a trouser trembling bulge behind the hall because there is an exhaust pipe channel at the bottom of the car and a transmission shaft arranged in the channel, which is designed for the rear channel, and the filial piety is mainly to have a certain effect on the safety factor of the car.

The drum is good, the rear floor drum can strengthen the stability and operation system of the car, and the drum can also save costs; It's just that the space in the rear row is a bit small, and the ride is not very comfortable, and the rear floor is flat, which makes passengers more comfortable, and you can also put more Zen things.

The bulge is better, and the bulge can put the transmission system under the car, which can play a good role in protecting the transmission shaft and avoiding the damage of the transmission shaft. If it is taken early, the propeller shaft will be on the outside, which is particularly susceptible to corrosion and friction.

The bulge is better, and the bulge can perhaps put the transmission system under the car, which can or may play a good role in the influence of the wing and prevent the wear and tear of the transmission shaft. If it is flat, the propeller shaft will be sent to the outside, especially when the idle hands are corrupted, and they will also be conflicted.

The rear of the car is very smooth, which helps a lot in the comfort and convenience of the ride. The rear row of Japanese cars is relatively stable, and the degree of humanization is still relatively high. There are some cars with a high bulge in the middle of the rear row, and if you sit in the middle of the rear row, it is a torment and the comfort is very poor.

But why don't automakers make the bumps smoother?

<>First of all, let's talk about why the manufacturer made a raised design for the rear row. Many cars are four-wheel drive, or car rear-wheel drive, and there will be a propeller shaft in the middle, and the bulge in the middle is used to walk the propeller shaft. Therefore, the rear row of the four-wheel drive car is more noticeable.

But why do many front cars also have bulges? This is because of the car platform, a car platform will produce a lot of cars, that is to say, many cars are made of one car platform, and a front-wheel drive public platform for four-wheel drive vehicles can save a lot of costs, so the front-wheel drive car also adopts a convex design. This is due to the fact that car manufacturers save production lines and platforms.

Some friends say that the rear bulge makes the car more rigid. There is some truth to this. It can really be strengthened.

From the perspective of mechanical force, the torsional sail of the chassis of the car with the rear bulge is stronger, and the safety of the body is also better. As a simple example, compare a flat piece of white paper with a white paper with a raised middle, such as the chassis, who is more likely to deform these two pieces of paper?

The answer, of course, is that flat white paper is more prone to deformation. Generally speaking, when the car is hit sideways at a speed below 60 per hour, the bulge can play a role in cushioning the impact force, thereby protecting the integrity of your body.

In the event of a lateral impact, if the speed is above 60 per hour, no matter how high the bump is, it may no longer be able to protect your body. This is one of the reasons why many high-end models still retain that annoying bulge in the rear.

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Many ruined buried cars are four-wheel drive fiber cars, or staring at cherry blossom rear drive cars, there will be a transmission shaft in the middle, and the middle bulge is used to walk the transmission shaft. Therefore, the rear bulge of the four-wheel drive car is more obvious.

<> "Looking at the world's troubled automobile market in China, at present, German cars and Japanese cars are the most widely used, and each German car and Japanese car has its own loyal fans. Of course, there are also old drivers who compare the two types of cars and find that most of the rear floors of Japanese cars are flat, while many German cars are convex, why is this? In fact, the reason is very simple, in short, it is mainly related to the concept of car manufacturing.

First of all, let's analyze from the comfort level, generally speaking, the rear seat of the car is relatively small compared to the front row, at this time there is a bulge in the middle, and the comfort is definitely not as comfortable as the flat floor! Therefore, many people will also think that since the German car is slightly more expensive and the power is also abundant, why doesn't it consider it from the comfort level? Such a statement is actually a certain misunderstanding of German cars.

When it comes to cutting corners in German cars, it starts with the mold. You know, every car is divided into high-performance cars and ordinary vehicles, high-profile cars and low-profile cars, and if we buy low-profile cars, there will inevitably be high-profile rear-wheel drive models, and these automobile companies in order to save new molds, so German cars will use the same set of molds for production, so that although the rear bulge is empty, it will still exist.

On the other hand, Japanese cars, which pursue economic stability, do not have a drive module in the rear! Generally speaking, the pursuit of Japanese cars is economical and durable, so front-wheel drive cars are relatively common in Japanese cars, and the rear row is not driven and will not involve the use of rear space, which leads to the fact that the rear row of Japanese cars is generally flat. In order to pursue a pure driving experience, German cars are mostly rear-wheel drives, so this bulge is specially reserved for rear wheel bearings and propeller shafts to use, in order to save chassis space, can only compress the space in the car!

After reading the old driver's explanation, you will know that generally speaking, as long as the German car and the Japanese car are driven by the rear wheel bridge cover, the planning of the space is not very abundant, and even some automobile companies will think that the rear row is for two people to ride, so that the rear row bulge is not much of a problem. Of course, comparatively speaking, German cars will have more rear bulges.

<> "German and Japanese cars are very popular cars. These two types of cars have high sales and reputation, and many car owners take these two types of cars as their first choice for car purchase. Some car owners carefully inspected their cars after buying a car, and later discussed with netizens before discovering the rear row of German cars and Japanese cars"flooring", that is, there is a difference in the position of the rear seat footrest.

Among them, German cars are protruding, while Japanese cars are flat. Why is that? Today, let's talk about this topic carefully.

1. Why are German cars convex?

German cars have orange bulges in the rear seat pedal position, mainly because of the driving style. Owners who have studied JCDecaux group cars should know that most of these models use rear drive. In order to meet the needs of rear-wheel drive, manufacturers will add a rotating shaft to the car when designing the vehicle.

And the added axis of rotation becomes another"Question"because manufacturers have to think about how to make it"Hidden"。The solution adopted by most car companies is to design a raised position in the rear seat, and the rotating shaft is placed under this position.

2. Why are Japanese cars flat?

If you want to talk about the biggest advantages of Japanese cars, most people will blurt out"Comfortable"Two words. Indeed, Japanese cars are notoriously comfortable cars, and the overall experience of the car is the key point pursued by this type of model. If the rear seat footrest position is convex, it will affect the riding experience of rear passengers.

And this broke the pursuit of Japanese cars, so the rear seat pedal position is flat.

In addition, one of the most important reasons is that most everyday models use a front-wheel drive system, because there is no need to increase the rotation shaft, so the position of the seat pedal is naturally flat.

3. How to choose? Which is better?

In fact, this varies from person to person, and is closely related to the needs and preferences of car owners, and there is no obvious superiority between convex pedal floor and flat pedal floor.

If the owner pursues aesthetics and comfort, then he should choose a Japanese car. Because the flat foot floor will not have an abrupt feeling, the visual effect is more beautiful. In addition, Japanese cars have other advantages, such as lightweight, fuel-efficient, etc., and car owners should think in many ways when purchasing.

If the owner is looking for car power, then he should buy a German car. German cars are more focused on cars"Steady"This type of model has high stability when driving on the road, and the owner is not easy to feel the vehicle"Gone with the Wind"。

That's all about"Why serve in the back of the German car"flooring"It is convex, while Japanese cars are flat"Declassification of this issue. In summary, the main reason for this difference is the difference in the way the vehicle is driven. As for how the owner should choose, it is the opinion of the benevolent and the wise.

Car owners should think in many ways, including vehicle comfort, aesthetics, power, etc. If the backseat footrest is used as a basis for judgment, it seems biased.