KR20010083172A - Vehicle Frame Structure - Google Patents

Abstract

PURPOSE: To provide a vehicle body structure surely improving rigidity of the body as a whole. CONSTITUTION: Beneath a floor panel member 7, a pair of side members 1 are connected together by means of a lower cross member 3d, both ends of an upper cross member 25 are passed through side wall members 20, 21 of the vehicle so as to be fixed to them, and along the side wall members 20, 21, reinforcing members 23a, 24, 27 are arranged for connecting the upper cross member 25 and the lower cross member 3d together. In this way, a rectangular frame structure connecting the left and right sides of the vehicle together is constructed of the upper cross member 25 serving as an upper side, the lower cross member 3d serving as the lower side, and the reinforcing members 23a, 24, 27 serving as the left and right sides.

Description

Vehicle Frame Structure

The present invention relates to a vehicle body structure.

As this kind of vehicle body structure, the thing of Unexamined-Japanese-Patent No. 4-67189 is mentioned, for example. In such a vehicle body structure, the rear wheel house is arranged in a rear wheel house to form a closed cross section. The closed cross section connects the closed cross section of the side members arranged below the floor fan with the closed cross section formed in the rear quarter panel. We plan to improve house rigidity.

However, in such a prior art, since the closed sections near the rear wheel house are coupled to each other, the rigidity improvement of the rear wheel house alone can be achieved, but it is merely reinforcing the left and right rear wheel houses individually, and the rigidity of the entire vehicle body. Contributes little to improvement. Therefore, there is a demand for a vehicle body structure that can reinforce the vehicle body more effectively and realize the stiffness improvement of the entire vehicle body.

This invention was devised in view of such a subject, and an object of this invention is to provide the vehicle body structure which can improve the rigidity of the whole vehicle body.

In the vehicle body structure of Claim 1, the floor panel member which comprises the floor surface of a vehicle, a pair of side members each arranged along both sides of the said floor panel member, and the lower side of the floor panel member are arrange | positioned. And a lower cross member for coupling the pair of side members to each other, extending in a vehicle width direction from an approximately upper position of the lower cross member, and being coupled in a state where both ends penetrate with respect to the side wall member of the vehicle, respectively. An upper cross member having a hollow shape and arranged along each of the side wall members, and having an upper end coupled to the vicinity of a portion where the upper cross member is engaged with the side wall member of the upper cross member, the lower end being the side member of the lower cross member; And a pair of reinforcing members joined in the vicinity of the portion engaged with the. Therefore, the upper cross member is made the upper side, the lower cross member is made the lower side, and a pair of reinforcement members are made the left side and the right side, and the substantially rectangular frame structure which combines the left and right sides of a vehicle body is formed, and the rigidity of the whole vehicle body is improved. You can.

Further, in the vehicle body structure of the present invention according to claim 2, the wheel house inner having a pair of beads before and after the reinforcing member extends in the vertical direction, and the lower portion is coupled to the wheel house inner, and the upper portion is connected to the upper cross member. It includes a combined bracket support. Therefore, with respect to the prior art, the torsional rigidity can be further improved, and the projection into the vehicle compartment can be reduced.

Further, in the vehicle body structure of the present invention according to claim 3, the bracket support has a lower portion coupled to each bead of the wheel house inner, and an upper portion thereof coupled to the upper cross member above the respective beads. Therefore, the torsional rigidity from the front and rear pair of beads can be effectively transmitted to the bracket support.

Further, in the vehicle body structure according to claim 4, the side wall member includes a rear quarter panel inner and a rear quarter panel outer, and is coupled to both quarter panels in a state where the cross member penetrates through both quarter panels. . Therefore, the rear quarter panel which has hardly contributed to the vehicle body rigidity in the prior art can be utilized as part of the strength reinforcing material.

Moreover, in the vehicle body structure of Claim 5, the bead extended in the up-down direction which protrudes to the said quarter panel outer side is formed in the periphery including the attachment part of the said upper cross member in the said rear quarter panel inner. It is. Therefore, the rigidity of the entire vehicle body can be improved, and the thickness of the rear quarter panel can be reduced, so that the vehicle body can be reduced in weight.

Moreover, in the vehicle body structure of Claim 6, the garnish is affixed on the outer surface of the attachment part of the said upper cross member in the said quarter panel outer. Therefore, aesthetics is improved because the end of the upper cross member is concealed by the garnish attached to the quarter panel.

Further, in the vehicle body structure of the present invention according to claim 7, the lower cross member is directly coupled to the inner and front beads of the pair of front and rear beads. Therefore, the rigidity of the whole vehicle body is improved.

In addition, in the vehicle body structure of the present invention, the lower cross member is formed of a pipe member, and the floor panel member extends downward along the vehicle width direction to open at least a portion of the lower cross member. A bead having a concave cross section is provided. Therefore, the rigidity of the whole vehicle body is improved.

BRIEF DESCRIPTION OF THE DRAWINGS The exploded perspective view which shows the vehicle body structure of embodiment.

2 is a perspective view showing a configuration around the rear wheel house on the right side of the vehicle body;

3 is a cross-sectional view taken along line III-III of FIG. 2 showing a configuration around the rear wheel house on the right side of the vehicle body.

FIG. 4 is a perspective view illustrating the reinforcing member and the bracket support in FIG. 2. FIG.

<Explanation of symbols for the main parts of the drawings>

1: side member 3d: fourth cross pipe

7: Rear floor fan 20: Rear quarter panel inner (side wall member)

21: rear quarter panel outer 23a, 24: beads (reinforcement member)

25: 6th cross pipe 27: Bracket support (reinforcement member)

EMBODIMENT OF THE INVENTION Hereinafter, one Embodiment which actualized this invention to the vehicle body structure of the periphery of the rear wheel house of a passenger car is demonstrated.

1 is an exploded perspective view showing the vehicle body structure of the embodiment, FIG. 2 is a perspective view showing the configuration around the rear wheel house on the right side of the vehicle body, FIG. 3 is a cross-sectional view showing the configuration around the rear wheel house on the right side of the same vehicle body. The left side corresponds to the front of the vehicle. In addition, although not shown in figure, the structure of the rear wheel house of the left side has the same structure of symmetry with respect to the thing of the right side shown in FIG. 2 and FIG.

As shown in Fig. 1, a pair of side members 1 are arranged in the front-rear direction of the vehicle, and each side member 1 forms a concave cross section which is open upwards, and has a shape such as the floor of the vehicle. It bends up and down accordingly. In the section of the tip part 1a of the pair of side members 1, it is formed in the closed cross section shape in order to ensure the energy absorption characteristic and intensity | strength at the time of a front collision of a vehicle. In addition, between the side members 1, one cross member 2 having a substantially rectangular cross section and five cross pipes 3a to 3e having a substantially circular cross section are arranged in the vehicle width direction. Both side members 1 are coupled to each other by these cross members 2 and cross pipes 3a to 3e.

Each of the cross pipes 3a to 3e is formed by cutting a ready-made steel pipe to a predetermined dimension and forms a straight line. Hereinafter, the first cross pipe 3a, the second cross pipe 3b, and the third cross pipe 3c from the front. ), 4th cross pipe 3d, and 5th cross pipe 3e. In addition, the cross member 2 is located between the first cross pipe 3a and the second cross pipe 3b. The 1st cross pipe 3a is welded and fixed in the state penetrated by the side member 1, Moreover, as shown in FIG. 2, the other 2nd thru | or 5th cross pipe 3b-3e is a side member ( It fits in the arc-shaped notch 1a formed in 1) from above, and the contact part is welded and fixed.

As shown in FIG. 1, on the side member 1, the radiator support 4, the dash panel unit 5, the front floor fan 6, and the rear floor fan 7 as a floor panel member are arrange | positioned from the front of a vehicle. It is. The radiator support 4 is welded and fixed on the first cross pipe 3a, and the dash panel unit 5 is welded and fixed on the cross member 2. Further, the front floor fan 6 is welded and fixed on the second cross pipe 3b, and the rear floor fan 7 is welded and fixed on the third to fifth cross pipes 3c to 3e.

The front floor fan 6 is composed of three members of the center tunnel part 10 and the left and right floor parts 11 and welded to each other, and the rear floor fan 7 is welded to the rear side of the front floor fan 6. Are combined by The front floor fan 6 and the rear floor fan 7 are formed so that the member welds 11a and 13 having a relatively shallow rib shape opening downward extend in the front-rear direction, as shown in FIGS. 2 and 3. In each member welding part 11a, 13, the side member 1 is contacted and fixed by welding so that the said side member 1 may form a closed cross section from the bottom.

In addition, the pipe weld portion 11b having a relatively deep rib shape that is opened downward is formed in the front floor fan 6 so as to extend in the left and right directions, and the pipe weld portion 14 that is opened downward in the same manner in the rear floor fan 7. , 15) is formed to extend in the left and right directions. The second cross pipe 3b is fitted into the pipe weld 11 from below, the third cross pipe 3c is inserted into the pipe weld 14, and the fourth cross pipe 3d is attached to the pipe weld 15. Are fitted respectively. These cross pipes 3b to 3d are welded and fixed to the inner walls of the pipe welded portions 11b, 14, and 15 over the entire long side direction (weld points are shown as A in FIG. 2). .

In addition, the fifth cross pipe 3e is welded to the lower portion of the rear end panel 16 provided behind the rear floor fan 7. In addition, the rear end panel 16 welds and fixes the rear end 16b to the rear end floor fan 16a.

2 and 3, rear quarter panel inners 20 are arranged on both left and right sides of the rear floor fan 7, and a lower portion of the rear quarter panel inner 20 is a rear floor fan 7. It is welded to the left and right ends of the. The rear quarter panel outer 21 is arranged in the outer side of the rear quarter panel inner 20, and the rear quarter panel outer 21 is, for example, in the door opening B shown in FIG. It is welded to the rear quarter panel inner 20 by the wheel arch part C etc. which were shown, and the closed cross section is formed between both panels 20 and 21. As shown in FIG.

A wheel house 22 protruding into the vehicle is welded to the rear quarter panel inner 20, and a pair of front and rear reinforcement beads 23a and 23b are formed in the vertical direction along the outer circumferential surface of the wheel house 22. The wheel house 22 and its beads 23a and 23b are extended to the lower side of the rear floor fan 7 and welded to both left and right ends of the rear floor fan 7 and at the bottom of both beads 23a and 23b. Is welded to the side surface of the side member 1. In addition, the vehicle body front-rear position of the front bead 23a coincides with the fourth cross pipe 3d, and is welded and fixed to the lower portion of the front bead 23a in a state where the fourth cross pipe 3d penetrates. At the same time, the end part of the pipe welding part 15 containing the 4th cross pipe 3d is welded.

That is, the left and right ends of the fourth cross pipe 3d are directly coupled to the front bead 23a of the wheel house 22, and are also indirectly coupled via the side member 1 or the pipe weld 15. It is. In addition, the rear quarter panel inner 20 has beads 24 protruding toward the rear quarter panel outer 21 in the up and down direction, and the beads 24 have beads 23a and 23b before and after the wheel house 22. Is located between). As is apparent from FIG. 3, the lower portion of the beads 24 of the rear quarter panel inner 20 overlaps the upper portions of the beads 23a, 23b of the wheel house 22, so that both beads 24, 23a, 23b) is continued in an up-down direction.

On the other hand, a sixth cross pipe 25 is arranged in the vehicle width direction in the vehicle, and the sixth cross pipe 25 is located substantially above the fourth cross pipe 3d. In addition, the sixth cross pipe 25 also forms a straight line by cutting the same existing steel pipe as other cross pipes 3a to 3e to a predetermined dimension. The left and right ends of the sixth cross pipe 25 are inserted into the insertion hole 20a formed in the upper portion of the bead 24 of the rear quarter panel inner 20 and the insertion hole 21a formed in the rear quarter panel outer 21. The outer circumference is welded to the inner circumference of each of the insertion holes 20a and 21a. Moreover, the edge part of the 6th cross pipe 25 is exposed to the outer surface of the rear quarter panel outer 21, and is concealed by the garnish 26 attached to the rear quarter panel outer 21. As shown in FIG.

A press-fit bracket support 27 is fitted to the bead 23a, 23b before and after the wheel house 22, and the bracket support 27 is a bead 23a, 23b of the wheel house 22. It is welded and fixed to the inner surface of the part or the rear quarter panel inner 20. As shown in FIG. The bracket support 27 is integrally installed with the bracket portion 27a so as to be located between the two beads 23a and 23b of the wheel house 22, and has a semi-circular cross section formed on the upper portion of the bracket portion 27a. The surface 27b is welded and fixed in contact with the outer periphery of the end of the sixth cross pipe 25.

In the vehicle body structure of the present embodiment configured as described above, the left and right ends of the fourth cross pipe 3d are directly coupled to the front bead 23a of the wheel house 22, and the side member 1 and the pipe It is also indirectly coupled via the weld 15, and the front bead 23a is connected to the sixth cross pipe 25 via the bead 24 and the bracket support 27 of the rear quarter panel inner 20. It is coupled to both left and right sides of the. Therefore, the 6th cross pipe 25 is made into the upper side, the 4th cross pipe 3d is made into the lower side, and the front bead 23a of the wheel house 22 and the rear quarter panel inner 20 are seen from the front of a vehicle. With the bead 24 and the bracket support 27 on the left side and the right side, a substantially rectangular frame structure for engaging the left and right wheel houses 22 is formed at the position of the rear suspension of the vehicle.

As a result, not only the rigidity of the wheel house alone, but also the rigidity of the entire rear suspension portion, in particular, can be drastically improved, as in the conventional example of Utility Model Publication No. 4-67189. For example, the geometry of the rear suspension can be optimized, and the quietness and controllability of driving can be improved.

As apparent from the above description, in the present embodiment, the fourth cross pipe 3d functions as a lower cross member, the rear quarter panel inner 20 and the rear quarter panel outer 21 function as sidewall members, and the reinforcing member As a function, the front bead 23a of the wheel house 22, the bead 24 of the rear quarter panel inner 20, and the bracket support 27 function.

As mentioned above, although description of embodiment is completed, the aspect of this invention is not limited to this embodiment. For example, in the above embodiment, the car body structure around the rear wheel house 22 of the passenger car is specified. However, the applied vehicle model is not limited to a passenger car, but may be applied to a wagon or a one-box vehicle. It is not limited to the rear wheel house 22 periphery, You may apply to another location.

In the above embodiment, cross-sectional circular pipes 25 and 3d having a circular cross section are used as the upper cross member and the lower cross member. It is not limited, For example, you may use cross-sectional rectangular cross pipe as each cross member. In addition, the lower cross member does not necessarily need to be hollow, and may be configured to cooperate with the rear floor fan 7 to form a closed cross section like the side member 1, for example.

In addition, in the said embodiment, welding fixed in the state which penetrated the edge part of the 6th cross pipe 25 through the insertion hole 20a of the rear quarter panel inner 20, and the insertion hole 21a of the rear quarter panel outer 21. However, it is not necessary to penetrate the rear quarter panel outer 21, for example, by forming a flange at the end of the sixth cross pipe 25 and contacting the inner side of the rear quarter panel outer 21, The outer side may be joined by laser welding or the like.

As described above, the vehicle body structure of the present invention according to claim 1 includes a floor panel member constituting a floor of a vehicle, a pair of side members arranged along both sides of the floor panel member, and the floor panel. It is arranged in the lower side of the member, the lower cross member for coupling the pair of side members to each other, and extending in the vehicle width direction from the approximately upper position of the lower cross member, both ends penetrate to the side wall member of the vehicle, respectively An upper cross member having a hollow shape coupled in a state and arranged along each of the side wall members, and an upper end coupled to a vicinity of a portion where the upper cross member is engaged with the side wall member of the upper cross member, and a lower end crossed the lower cross. And a pair of reinforcing members coupled to the vicinity of the portion engaged with the side member of the member. . Therefore, a substantially rectangular frame structure is formed in which the upper cross member is the upper side, the lower cross member is the lower side, the pair of reinforcing members are the left side and the right side, and a substantially rectangular frame structure is formed to couple the left and right sides of the vehicle body, thereby improving the rigidity of the entire vehicle body. You can.

In addition, the vehicle body structure of the present invention according to claim 2, the wheel house inner having a pair of beads before and after the reinforcing member is extended in the vertical direction, the lower portion is coupled to the wheel house inner, the upper portion is the upper cross member It includes a combined bracket support. Therefore, with respect to the prior art, the torsional rigidity can be further improved, and the projection into the vehicle compartment can be made small.

In the vehicle body structure according to claim 3, the bracket support has a lower portion coupled to each bead of the wheel house inner, and an upper portion coupled to the upper cross member at an upper side between the beads. It is. Therefore, the torsional rigidity from the front and rear pair of beads can be effectively transmitted to the bracket support.

In addition, the vehicle body structure of the present invention according to claim 4, wherein the side wall member includes a rear quarter panel inner and a rear quarter panel outer, and is coupled to both quarter panels in a state where the cross member passes through both quarter panels. . Therefore, the rear quarter panel which has hardly contributed to the vehicle body rigidity in the prior art can be utilized as part of the strength reinforcing material.

Moreover, in the vehicle body structure of Claim 5, the bead extended in the up-down direction which protrudes to the said quarter panel outer side is formed in the periphery including the attachment part of the said upper cross member in the said quarter panel inner. . Therefore, since the rigidity of the whole vehicle body can be improved and the plate | board thickness of a rear quarter panel can be made thin, the vehicle body weight can be reduced.

Moreover, in the vehicle body structure of this invention of Claim 6, the garnish is affixed on the outer surface of the attachment part of the said upper cross member in the said quarter panel outer. Therefore, since the end of the upper cross member is concealed by the garnish attached to the quarter panel, aesthetics is improved.

Moreover, the vehicle body structure of this invention of Claim 7 is directly couple | bonded with the said lower cross member to the inner side and front side beads of the said front-rear pair. Therefore, the rigidity of the whole vehicle body is improved.

In the vehicle body structure according to claim 8, the lower cross member is formed of a pipe member, and the floor panel member is opened downward while extending in the vehicle width direction so that at least part of the lower cross member is closed. A bead having a concave cross section to be provided is provided. Therefore, the rigidity of the whole vehicle body is improved.

Claims (8)

A floor panel member constituting the bottom surface of the vehicle, A pair of side members each arranged along both sides of the floor panel member; A lower cross member arranged in a lower side of the floor panel member and coupling the pair of side members to each other; An upper cross member having a hollow shape extending in a vehicle width direction at an approximately upper position of the lower cross member, and coupled in a state where both ends penetrate with respect to the side wall member of the vehicle; Arranged along each of the side wall members, the upper end being engaged in the vicinity of the part which is engaged with the side wall member of the upper cross member, and the lower end being in the vicinity of the part being engaged with the side member of the lower cross member. A vehicle body structure comprising a pair of reinforcing members coupled thereto. The method of claim 1, The body structure includes a wheel house inner having a front and rear pair of beads extending in the up and down direction, the lower portion being coupled to the wheel house inner, and a bracket support having an upper portion coupled to the upper cross member. . The method of claim 2, The bracket support has a lower body coupled to each bead of the wheel house inner, and an upper portion thereof coupled to the upper cross member at an upper side between the respective beads. The method of claim 1, The side wall member includes a rear quarter panel inner and a rear quarter panel outer, and the body structure is coupled to both quarter panels in a state where the cross member passes through both quarter panels. The method of claim 4, wherein A bead extending in a vertical direction protruding toward the quarter panel outer side is formed in a periphery including an attachment portion of the upper cross member in the quarter panel inner. The method of claim 4, wherein A vehicle body structure, wherein a garnish is attached to an outer surface of an attachment portion of the upper cross member in the quarter panel outer. The method of claim 2, The lower body member is directly coupled to the inner and front beads of the pair of front and rear beads. The method of claim 1, The lower cross member is formed of a pipe member, and the floor panel member has a bead having a concave cross section in which at least a portion of the lower cross member enters while being opened downward while extending along the vehicle width direction. rescue.