JP3479376B2 - Connection structure between the floor end of the vehicle and the lower part of the center pillar - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for connecting a floor side end of a vehicle and a center pillar lower portion.

[0002]

2. Description of the Related Art In a vehicle body, as shown in FIG. 5, a center pillar a is generally formed by a pillar inner and a pillar outer so as to have a closed cross section, and a lower end portion of the center pillar a is connected to a side sill b which forms a longitudinally closed cross section of a lower portion of the vehicle body. In general, the upper end portion is fixed to a roof side rail having a closed cross section in the front-rear direction on the upper part of the vehicle body. Further, the left and right sides of the floor c are fixed to the lower portion on the inner side of the side sill b, and the side end of the cross member d which is fixed on the floor c and forms a closed cross section in the vehicle width direction is a center pillar of the side sill b. In general, the structure is such that it is abutted and fixed to the inside of the lower end fixing portion of the pillar inner of a.

In the general center pillar structure described above, the side end of the cross member d and the lower end of the pillar inner of the center pillar a are directly connected by the bracket e as shown by the chain line in FIG. The one in which the load applied to the lower end of the center pillar is transmitted and distributed to a cross member having high rigidity to improve the rigidity of the entire body has been developed conventionally and is disclosed in Japanese Utility Model Laid-Open No. 61-7473.

[0004]

Since the center pillar of the vehicle is located almost directly beside the occupant in the front seat, the deformation of the center pillar to the inner side at the time of a side collision has a great influence on the obstacle to the occupant. . That is, in general, the center pillar is thicker below it (large cross-sectional area) and thinner above (small cross-sectional area) at the height position of the window shoulder of the door, and the center pillar cross-section is relatively close to the boundary. Often, the structure changes suddenly. Therefore, at the time of a side collision, the center pillar is likely to be bent inward near the area where the cross section suddenly changes, that is, near the central part in the vertical direction, and when the center pillar is bent and deformed inward near the central part, the amount of deformation also increases. However, there is a risk of serious damage to the front seat occupants.

Therefore, a strength discontinuity portion (a portion that is more easily bent than the above-mentioned sudden change in cross section) against the input load from the side is positively formed in the lower position of the center pillar, and the center pillar is set at the initial stage of the side collision. By bending and deforming inward at the strength discontinuity, the center and upper parts of the center pillar, which may give a shock to the front seat occupant, do not have any partial bends and are almost even as a whole. The present applicant has developed a structure that is displaced inward and the amount of displacement is relatively small so that the impact on the occupant can be minimized, and a utility model registration application has already been filed as Japanese Patent Application No. 5-20244. is doing.

In this way, in the case of a side collision, in order to accurately bend and deform the center pillar at the strength discontinuity portion which is positively provided in advance, that is, at the position below the center pillar, the upper and lower end portions of the center pillar, especially the lower end portion, are to be deformed. The structure and the side sill around it should be able to securely receive the collision load, and to effectively transfer the load from the lower end of the center pillar and the side sill to which it is fixed to the floor.
As in the prior art shown in Fig. 3, in the joint structure in which the side end of the bracket fixed to the side end of the cross member fixed to the floor is butted and fixed to the center of the inner surface of the lower end of the pillar inner, the collision load is It can only partially receive it, and it is difficult for the side sill to effectively absorb the initial input load. In addition, the width of the bracket is increased and the side end of the bracket rises gently upward, and is joined and fixed so as to wrap around the entire lower end of the pillar inner of the center pillar, thereby forming a wide continuous closed section from the cross member to the center pillar. By doing so, the side sill and the cross member can firmly receive the collision load at the time of a side collision, and a stable bending deformation of the center pillar can be obtained.However, if a wide continuous closed cross section is formed in this way, the bracket interior This causes a problem that not only it becomes difficult to secure a space under the foot of the rear seat occupant, but also it becomes very difficult to attach the pipes, harnesses, etc. that pass back and forth along the inner surface of the side sill.

An object of the present invention is to solve the above conventional problems.

[0008]

SUMMARY OF THE INVENTION The present invention provides a vehicle body structure in which a doubler that forms a flat closed section in the vehicle width direction is fixed to the upper surface of a floor, and the side end of the doubler is fixed to a side sill. The portion is joined and fixed to the floor and the doubler below the side end portion of the floor, and the other end is joined and fixed to the pillar inner of the center pillar within the cross section of the center pillar from the side end of the floor through the side sill cross section.
With a phosphorus hose outrigger.
By attaching and fixing the hose outrigger and pillar inner
The first is that a closed cross section is formed within the cross section of the center pillar.
The configuration is as follows. Also, a flat car on the floor top
A doubler forming a closed cross section in the width direction is fixed to the doubler.
Body structure of a vehicle in which side edges of the vehicle are fixed to side sills
At one end of the floor below the side end of the floor.
It is joined and fixed to the lower and doubler, and is supported from the side edge of the floor.
Passes through the Idsil cross section and the other end is in the cross section of the center pillar
Rinho fixedly joined to the pillar inner of the center pillar
A phosphorus outrigger provided with the phosphorus hose
Place the outriggers on the side sills within the cross section of the side sills.
The second structure of the present invention is that it is bonded and fixed to the hose.
It is a thing. In addition, a flat cross section in the vehicle width direction on the floor top
The doubler that forms the
In the vehicle body structure of the vehicle fixed to the id sill,
The end part is below the side part of the floor.
Cross section of the floor from the side edge of the floor.
The other end of the center pillar
-Side pillar sill and side sill breakage
Rinho that is bonded and fixed to the side sillin hose in the plane
A phosphorus outrigger provided with the phosphorus hose
Rinhosu outrigger Outrigger Inner and Rinho
A book that consists of two parts, the outer outrigger outer
This is a third configuration of the invention. Furthermore, according to the present invention
In the third configuration, the phosphorus hose outrigger inner
The side silling hose within the cross section of the side sill.
The side silrin hose joints that are fixed together
It is the fourth constitution of the present invention that it is physically provided.
It Further, the first structure is provided in any one of the second to fourth structures of the present invention.
A structure obtained by combining the above is the fifth structure of the present invention.
Also, input from the side to a predetermined position on the lower part of the center pillar
Formed a strength discontinuity with the weakest strength against load
The configurations 1 to 5 of the present invention are applied to the configurations.
This is the sixth configuration of the present invention.

[0009]

As described above, the lower portion of the center pillar and the doubler forming the vehicle width direction closed cross section are connected by the phosphorus hose outrigger that passes from the lower surface of the side end portion of the floor to the side sill cross section and the center pillar cross section. those of the configuration
So, with the phosphorus horse outrigger and pillar inner
By forming a closed cross section in the center pillar cross section,
The ring hose outrigger in the cross section of the side sill.
By being fixedly attached to the dosyl-lin hose, the side sill below and around the center pillar firmly receives the initial input load at the time of a side collision without being deformed over a wide area, and the center pillar is configured in the lower position. The center pillar, which has a large impact on the occupant and has a large impact on the occupant, displaces inward almost uniformly without partial bending, and the collision energy after that is side sill. Since the portion slowly deforms and absorbs, the amount of displacement of the center pillar inward is relatively small, and the impact given to the occupant can be significantly reduced. In addition, as described above, the phosphorus hose outrigger that directly connects the vehicle width direction closed cross section formed by the doubler on the floor and the center pillar lower portion,
Since it is installed from the underside of the floor through the cross sections of the side sill and the center pillar, there is no additional reinforcing member in the passenger compartment, sufficient foot space for the rear seat occupants is secured, and the front and rear along the inner surface of the side sill. It does not adversely affect the installation of piping and harnesses that pass through.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a general view of the present invention. Reference numeral 1 is a center pillar having a closed cross section composed of a pillar inner and a pillar outer, and has a structure reinforced by a phosphorus hose provided in the cross section. At a predetermined height position below the center pillar 1, a strength discontinuity 1a, which has the weakest strength against an input load from the side, is formed, and a collision load is applied to the center pillar by a side collision. When the is input, the center pillar is bent inward from the strength discontinuity portion 1a as shown by the broken line, so that the center pillar is displaced substantially uniformly inward from the central portion to the upper portion without being partially bent. ing.

The side sill 2 is, as conventionally known,
Reference numeral 3 denotes a doubler that is configured by a side sill inner 21 and a side sill outer 22 in a closed cross section, and is reinforced by a side sill lin hose 23 that divides the cross section, and is a doubler fixed on the floor 4 and forming a closed cross section in the vehicle width direction. The side end of the doubler 3 is fixed to the inner surface of the side sill inner 21.

The reference numeral 5 passes from the lower surface of the floor 4 through the cross section of the side sill 2 and the cross section of the lower part of the center pillar 1, and the closed cross section formed on the floor 4 by the doubler 3 and the lower end of the center pillar 1. It is a phosphorus hose outrigger that connects the parts.

As shown in FIG. 2, the phosphorus hose outrigger 5 is composed of a phosphorus hose outrigger inner 51 and a phosphorus hose outrigger outer 52.

The phosphorus hose outrigger inner 51 has a curved surface having a width substantially the same as the width of the center pillar from the lower part of the floor 4 to the upper end of the side sill inner 21, and the thickness of the center pillar from both left and right ends of the curved surface. A curved hat-shaped cross section 51a formed by a vertical surface that rises and a flange that is parallel to the front-rear direction of the vehicle body, and side sillin hose coupling portions 51b and 51b that extend in the front-rear direction from the flange of the curved hat-shaped cross-section 51a. Has been done.

The phosphorus hose outrigger outer 52 includes a curved surface that rises and curves from a lower portion of the floor 4 to a lower portion of the strength discontinuous portion, and a vertical surface that rises from the left and right ends of the curved surface by the thickness of the center pillar and the vehicle longitudinal direction. With a curved hat-shaped cross-section 52a formed by a flange parallel to the side hull, and a cross-section 52b in the front-rear direction corresponding to the side sill phosphorus hose couplings 51b and 51b of the phosphorus hose outrigger inner 51. . The phosphorus hose outrigger inner 51 and the phosphorus hose outrigger outer 52 form a substantially cross-shaped phosphorus hose outrigger 5.

At the connecting position of the lower end of the center pillar 1 of the side sill 2 composed of the side sill inner 21, the side sill outer 22, and the side sill outer hose 23, there is provided an opening 21a communicating from the side end of the floor 4 into the cross section of the side sill. 21 is formed in the vicinity of the lower part of the side pillar sill, and an opening 22a is formed in the upper part of the side sill outer 22, which communicates from the cross section of the center pillar 1 to the side sill cross section.
Further, the side sillin hose 23 is divided into front and rear portions at a predetermined range at the relevant portion, and these opening portions 21a, 2
The phosphorus hose outrigger 5 can be attached at the discontinuity of the 2a and the side sillin hose 23.

The inner portion of the lower ends of the curved hat-shaped cross-sections 51a, 52a of the phosphorus hose outrigger 5 having the above-mentioned cross shape is applied to the lower surface of the side end portion of the floor 4 and welded and fixed to the floor 4 and the doubler 3. Horse outrigger 5
In the cross section of the side sill 2 from the opening 21a of the side sill inner 21 to extend upward and curve into the cross section of the center pillar 1 from the opening 22a of the side sill outer 22, the phosphorus hose outrigger 5 and the side sill inner. 21 and the side sill outer 22 are welded and fixed to each other, and the phosphorus hose outrigger 5 is welded and fixed to the pillar inner 11 of the center pillar 1 so that the side sill 2 and the vehicle width direction closed cross section formed by the floor 4 and the doubler 3 are fixed. The center pillar 1 has a structure in which the lower end portion of the phosphorus hose outrigger 5 is firmly connected to the lower end of the center pillar 1 by curved hat-shaped cross-sections 51a and 52a. 51b is a side silirin hose 23 divided into front and rear The side sillin hose 23 is integrally connected to the front and rear at the side silrin hose joints 51b and 51b by joining and welding and fixing to this portion, and the side sills 2 themselves are strongly reinforced by the phosphorus hose outrigger 5. The structure will be changed.

As described above, the phosphorus hose outrigger 5
By adopting a configuration in which the lower part of the floor 4 to the inside of the cross section of the side sill 2 and the center pillar inner 11 are strengthened from the inside of the cross section, the thickness of the doubler 3 fixed to the upper surface of the floor 4 (inside the passenger compartment) The side sill inner 2
It becomes easy to attach the pipes, harnesses, etc. arranged in front and back along the inner surface of 1.

It should be noted that in the embodiment shown in FIGS. 1 and 2, the phosphorus hose outrigger inner 51 is replaced by the curved hat-shaped cross section 51.
An example is shown in which front and rear side sillin hose coupling portions 51b and 51b separately formed on the flange of a are integrally welded and fixed. As shown in FIG. 3, the curved hat-shaped cross-section portion 51a and the side silrin hose are shown. Coupling parts 51b, 51
The phosphorus hose outrigger inner 51 having b may be configured as an integral body.

In the above, in the case of a side collision in which another vehicle has thrust into the center pillar portion from the side, the front bumper of the other vehicle first crashes near the lower portion of the center pillar.
At that time, the center pillar 1 is, as shown by the broken line in FIG.
A strength discontinuity 1a formed at a predetermined height position below
From the central part to the upper part of the center pillar 1 which has a large impact on the occupant and is displaced substantially uniformly inward without being partially bent, and the displacement amount is relatively small and the occupant suffers. The shock can be significantly reduced.

In this case, in order for the center pillar 1 to be bent accurately at the strength discontinuity portion 1a, it is necessary to firmly receive the load at the initial stage of the collision around the lower end joint portion of the center pillar 1 of the side sill 2. As described above, since the phosphorus hose outrigger 5 is firmly coupled within a predetermined range from the lower portion of the floor 4 to the pillar inner 11 in the cross section of the side sill 2, the side sill portion is supported from the inside, and the load at the initial stage of collision is The center pillar 1 is securely received by the phosphorus hose outrigger 5, and the center pillar 1 is surely bent and deformed at the strength discontinuous portion 1a.
The input load effectively absorbs the collision energy due to the gentle deformation of the side sill portion and the wide dispersion from the side sill to the floor.

[0023]

As described above, according to the present invention, the side sill portion at the lower end portion of the center pillar is joined by the phosphorus hose outrigger from the lower end portion of the floor within the side sill cross section, and at the joint portion between the floor, the doubler and the side sill inner. ， By continuously reinforcing up to the lower part of the pillar inner, it receives the initial input load at the time of a side collision, so that the strength discontinuity set in the lower part of the center pillar surely bends, and the degree of impact on the occupant. The center pillar of the large-sized center pillar displaces almost uniformly inward from the center to the upper part without being bent, and its displacement amount is relatively small, and the collision energy is absorbed by the gentle deformation of the side sill to reach the floor. Therefore, the damage to the occupants can be minimized.
Further, since the phosphorus hose outrigger is arranged from the inside of the cross section of the side sill to the inside of the cross section of the center pillar, the side sill and the lower part of the center pillar can be strengthened without protruding to the inside of the room, and the foot space of the rear seat occupant can be saved. It can be secured sufficiently, and there is no risk of adversely affecting the installation of piping, harnesses, etc. that pass back and forth along the inner surface of the side sill. Further, since the phosphorus hose outrigger reinforces the inside of the cross section of the side sill to the inside of the cross section of the lower part of the center pillar, it is extremely effective in preventing the twisting behavior of the center pillar due to the pushing of the rear door.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, (A) is a front view of a half of a vehicle body center pillar part, a broken line shows a deformed state of the center pillar part at the time of a side collision, and (B) shows ( It is an expanded longitudinal cross-sectional view of the X section of A).

FIG. 2 is an exploded perspective view of the phosphorus hose outrigger shown in FIG.

FIG. 3 is an exploded perspective view showing another example of a phosphorus hose outrigger.

FIG. 4 is an explanatory diagram showing a modified form of the center pillar due to a side collision, in which (A) is a configuration of the present invention,
(B) shows the case of the conventional structure.

FIG. 5 is a perspective view showing a structure in the vicinity of a connecting portion of a conventional general center pillar lower end portion to a side sill.

[Explanation of symbols]

1 center pillar 1a Strength discontinuity 2 side sills 3 doubler 4 floors 5 phosphorus horse outrigger 11 pillar inner 12 pillar outer 21 Side Sill Inner 22 Side sill outer 23 Side sillin hose 51 Lynn Horse Outrigger Inner 51a Curved hat cross section 51b Side silrin hose joint 52 Lynn Horse Outrigger Outer 52a Curved hat-shaped section 52b Front-rear hat cross section

Claims (6)

(57) [Claims] 1. A lower end of a center pillar having an upper end coupled to a roof side rail is fixed to a floor side end and a side end of a doubler joined and fixed to the floor to form a vehicle width direction closed cross section. In a vehicle body structure of a vehicle coupled to a side sill of a closed cross section, one end is joined and fixed to the floor and a doubler on the lower surface of a side portion of the floor, and the other end passes through the cross section of the side sill from the side end of the floor. Is joined and fixed to the lower part of the center pillar inner in the cross section of the center pillar, and the closed cross section is centered in cooperation with the center pillar inner.
A joint structure between a floor side end of a vehicle and a lower part of a center pillar, which is provided with a phosphorus hose outrigger formed in a pillar cross section . 2. The upper end portion is connected to a roof side rail.
The bottom edge of the center pillar on the floor edge and on the floor.
Side edges of the doubler that are fixedly joined and form a closed cross section in the vehicle width direction
Vehicle of vehicle joined to side sill with closed cross section
In the body structure, one end is on the underside of the side of the floor
Is fixedly attached to the floor and the doubler by a side edge of the floor.
Part of the cross section of the side sill and the other end is the center pillar
In the lower section of the center pillar inner in the cross section of the
While being worn, the side sill
A coupling structure between a floor side end portion of a vehicle and a center pillar lower portion is provided with a phosphorus hose outrigger that is joined and fixed to a base . 3. The upper end of the roof side rail is connected to the roof side rail.
The bottom edge of the center pillar on the floor edge and on the floor.
Side edges of the doubler that are fixedly joined and form a closed cross section in the vehicle width direction
Vehicle of vehicle joined to side sill with closed cross section
In the body structure, one end is on the underside of the side of the floor
Is fixedly attached to the floor and the doubler by a side edge of the floor.
Part of the cross section of the side sill and the other end is the center pillar
In the lower section of the center pillar inner in the cross section of the
While being worn, the side sill
A phosphorus hose outrigger that is fixedly attached to the base is provided.
The phosphorus hose outrigger
Outrigger Inner and Ring Horse Outrigger Outer
A structure for connecting a floor side end of a vehicle and a lower part of a center pillar, characterized by being configured by two parts . 4. A floor side end portion of the vehicle according to claim 3.
In the connection structure with the lower part of the center pillar,
Inside the cross section of the side sill for the Utriger Inner Side
Side-silling hose connection that is bonded and fixed to the lurin hose
Of a vehicle characterized in that the joint portion is provided integrally or integrally.
Combined structure of the floor side end and the lower part of the center pillar. 5. The vehicle according to any one of claims 2 to 4.
Smell structure that connects the floor end and the lower part of the center pillar
The phosphorus hose outrigger in the cross section of the center pillar.
Is secured to the lower part of the center pillar inner by
Closed cross section is center pillar cross section in cooperation with inner pillar inner
Floor side end of vehicle characterized by being formed inside
The connecting structure of the lower part of the center pillar. 6. The vehicle structure according to any one of claims 1 to 5 , wherein the floor side end portion of the vehicle and the lower part of the center pillar are connected to each other, at a predetermined position of the lower part of the center pillar, an input load from the side is applied. On the other hand, a joint structure between a vehicle floor end and a lower part of the center pillar is characterized in that a weakest strength discontinuous portion is formed.