JPS61155007A - Car body structure of automobile - Google Patents

Abstract

PURPOSE:To constitute variably a wheel base to improve travelling property in low and high speed by incorporating movably forward and backward either one of front wheel unit or rear wheel unit in a body through a guide mechanism. CONSTITUTION:While a front wheel unit 2 of a body 1 is controllably operated, rear wheels 7 are advanced by a drive source 8 provided on a rear wheel unit 3. Then, a slide roller 10 rolls on a guide rail 9 through a body unit 5 and a pivot 13 of a guide mechanism 4 so that only rear wheel unit 3 advances. As a result, the body 1 is largely forward slanted about the front wheel unit 2 to shorten a wheel base. On the other hand, when the rear wheel unit 3 is retreated through the guide mechanism 4 under the braked condition of the front wheel unit 2, the body 1 is lowered about the front wheel unit 2 to elongate the wheel base. Thus, the travelling property in low and high travelling can be respectively improved according to the change in the wheel base.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a monolithic structure for a motor vehicle.

Conventional technology The general one-body structure of automobiles is described in, for example, "Automotive Engineering Complete Book! Volume 1" published by Sankaido Co., Ltd. on April 20, 1980.
Volume 3: One of the Riding Swallows'', page 66 shows the L sea urchin on the body! A friend who wears a shaft nK! Since Akebono does not include torsion bars, shock absorbers, etc., the front unit and rear wheel unit are fixedly installed.

Problems to be Solved by the Invention However, with the above-mentioned main body structure, the wheelbase is fixedly set, so it is difficult to prevent pitching and to maintain running stability according to the running speed. I can't figure it out.

Therefore, the present invention provides a one-piece structure for an automobile that can always sufficiently exhibit pitching prevention and driving stability.

Problem t - Ninth Means for Solving In the present invention, at least one of the front wheel unit or the rear wheel unit is slidably connected to and secured to the guide member and the guide member. It is assembled so that it can move freely in the front and rear directions via a guide mechanism consisting of a slide member.

The driving force of the vehicle that is transmitted to one wheel of the front wheel unit or the rear wheel unit via the wheel shaft depends on the front wheel unit or the rear wheel unit.
Pull the K-wheel unit towards the 10,000 t-, 1i10,000 unit side (7 t#), pull it away from the other unit, and change the wheelbase.

Example EMBODIMENT OF THE INVENTION Below, one embodiment of the present invention will be described in detail based on the drawings.

In Figures 1 to 4, l indicates a body, and this body 1
The M horizontal unit 2't is fixedly attached to the front of the vehicle.

3 indicates a rear wheel unit body 5, which is assembled to the bottom of the body 1 so as to be movable in the front and back direction via a guide mechanism 4, and an A7t unit body 5 which is attached to the unit body 5 via a torsion bar and a shock absorber (not shown). 7t horizontally mounted in one width direction! With axis 6.

After fixing the screws to this 1@6, the left and right pairs of 9 are made up of 7 and 7. The one shaft 6 is assembled into the unit body 5 and connected to a drive source 8 through a shaft A7 to form a drive shaft. The guide mechanism 4 is formed parallel to the upper surface of the bottom of the body 1 with an interval in the front-rear direction and in the left-right direction (same in the dish width direction). It is comprised of a pair of left and right slide rollers 1o as sliding members which are arranged to protrude upward from the front part and slide into and hold the front 8 and guide wheels 9. This slide roller 10d is fitted and supported by the bearing portion 11 of the lower T-unit body 5, and is opened between the pair of left and right guides V+ and L9 of the intermediate T-body 1 through the NFC long hole 122! - It is rotatably attached to the upper part of the 9th bigettsu eye 3 via a support shaft 14r. 15 is rear wheel unit 3
The rotation of the drive mechanism is shown, and the bearing hole l of the pivot 13 is shown.
IL is protruding downward and fixed to the 9th part with 9th sun - 凰16,
A bracket 17' is fixed to the unit body 5, and a nine motor 18 is connected to the output shaft of this motor 18. Add i1 and get the sun tooth j! 16 and the planet 111jI19
It consists of Note that the slide roller 10 and the rotating
The machine 4415 is provided with a locking means (t-1 (not shown) and m (not shown), respectively). Nine, is there a frictional force between the circumferential surface of the slide roller 10 and the surface of the guide rail 12? It has the property of increasing

Second to the above embodiment structure, when the front wheel unit 2 is braked and the rear wheel 7 is moved forward by the driving force of the drive source 8,
Body unit 5. The slide roller 10 rolls on the guide rail 9t'' via the pivot 13, and the rear wheel unit 3 moves to the front wheel unit 2 side, that is, to the front side. forward leaning n,
The wheel pace becomes smaller as dimension AI (Fig. 4 [A
(see l).

-10,000, below 1vlli411 of front wheel unit 2,
After the drive source 8t, it is difficult to follow the drive, and the guide mechanism 4
The rear wheel unit 3 moves rearward through the t-axis, and the rear part of the body 1 descends as the front wheel unit 2t-axis to soften the forward leaning posture of the body 1, and the wheelbase changes! , becomes larger (/5 (Jt - see IBI in Figure 4),
.

By the way, when the rotation mt of the slide roller 10 is regulated and the motor 18t of the rotation drive mechanism 15 is driven, the free tooth 1 [1
9 rotates and revolves around Taiyogafu 16.

Due to this, rear wheel unit 3t pivot 13t-1i1
It can also be rotated (swiveled) in the horizontal direction.

Figure 5.6 shows the other side of the present invention and is a comparative example, in which the body 41, which is approximately oval in side view, is fixedly mounted on the body 2A is connected to a drive source not shown. Equipped with a pair of left and right front iL wheels of 20t. IL#A of IL body IA is assembled so as to be freely movable in the front and back direction via the central direction mechanism, and is rotatably supported by the unit body 5 on the 11-wheel unit 3A via an unillustrated shaft. The descendants of Santo and Nashikuichi @7 A'i are prepared. Therefore, after 1
The automatic control of 7 people is regulated by a braking mechanism not shown, and the front 1t @ 20
t-When driving backward, the slide roller 1 of the guide mechanism 4
0 is in sliding contact with and secured to the guide rail 9, and while the oval body IA becomes vertical, the front wheel unit 2A approaches the rear wheel unit 3A, and the wheelbase becomes smaller (Fig. 6). fAI#Shi). Contrary to this 1, the front JiL wheel is 20t-
When the vehicle is driven forward, the body IA becomes horizontal, the front unit 2A moves away from the rear wheel unit 3A, and the wheelbase increases (see FIG. 6 IBI).

In addition, as shown in Fig. 47, 3B'i is fixedly mounted on the body IB and connected to a drive source (not shown), and assembled so as to be freely movable in the front and rear directions via the front wheel unit 2Bt-slide mechanism 4. Joint mechanism 221 that bends the front wheel unit 2B'i to the support unit 21 of 2B
At the same time, a joint is attached to the supporting leg body 23 of the rear #a 2 unit B to bend the rear unit) 3 Bt in a 10,000-degree angle.
I attached 10,000, it is outside the body IB! This body shell 25t is built into a body shell 25 which is oval in shape when viewed from above, and is rotatably mounted on the body IB by being built into a rotating rock ellipse (not shown), and from the state shown by the solid line, the rear wheel After unit 3B'
Rotation of IL wheel 7? The front wheel unit 2B and the rear wheel unit 3B are regulated and bent forward and backward while synchronizing the front wheel unit 2B and the rear wheel unit 3B.

In addition to changing the body shell 25t from vertical to horizontal while lowering the body IBi, it is also possible to configure the body shell 25t in two ways to form both postures shown at one point fIAa. Note that the reference numeral 26 is a seat with an IBIc attached to the body.

In order to overcome the effects of the invention, it is possible to change the wheel pace by moving the front wheel unit or the rear wheel unit closer to the other unit and further away from the other unit. Because you can.

When driving at low speeds, the wheel pace is reduced to reduce the space occupied by the vehicle in the longitudinal direction, and when driving at high speeds or when the road surface has large undulations, the wheel pace is increased to improve driving stability.t9. It has a great effect on English use as it can prevent pitching.

[Brief explanation of drawings]

Is Fig. 1 an embodiment of the present invention? The side view shown in FIG. 2 shows the guide mechanism rotation 9 of the same embodiment II! Fr blood chart. Fig. 3 is a perspective view of the same guide mechanism seen from above, Fig. 4 is a perspective view of the same guide mechanism, (Bl is an explanatory diagram of the operation of the same embodiment, Fig.
Figure 7 shows six different examples of the present invention. Fig. 5 is a perspective view showing one example, Fig. 6 廄1, tB
FIG. 7 is a schematic side view showing still another example. 1, IA, IB...Body, 2.2A, 2B-'
Front wheel unit, 3.3A, 3B... Rear wheel unit, 4
...Guide mechanism, 9...Guide rail, 10...
Nurai Figure 3 Guide ν-Le

Claims (1)

[Claims] At least one of the front wheel unit and the rear wheel unit is in sliding contact with the guide member and the guide member,
An automobile body structure, characterized in that it is assembled so as to be movable in the front and rear directions via a guide mechanism consisting of an engaging slide member.