JP2011218934A - Shock absorbing structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure shock absorbing capacity of a shock absorbing member by firmly fixing a shock absorbing member support bracket on a floor tunnel for preventing it from falling down.SOLUTION: The shock absorbing member 16 is supported on the shock absorbing member support bracket 15 fixed on the floor tunnel 13 held between left and right front seats. A stiffener 34 is put on the lower surface of the floor tunnel 13. The floor tunnel 13 is held and fixed vertically between the shock absorbing member support bracket 15 and the stiffener 34.

Description

  The present invention supports an impact absorbing member on an impact absorbing member supporting bracket fixed on a floor tunnel sandwiched between left and right front seats, and causes the front seat to interfere with the impact absorbing member at the time of a side collision of a vehicle. The present invention relates to a shock absorbing structure for a vehicle that absorbs water.

  Such a shock absorbing structure for a vehicle is known from Patent Document 1 below.

  In this case, a pedestal (impact absorbing member support bracket) and an impact absorbing member (shock absorbing member) are arranged in two layers on the upper surface of the floor tunnel of the vehicle, and the upper impact absorbing member on which the seat interferes at the time of a side collision is provided. By making it stronger than the lower pedestal, the impact absorption effect is enhanced while reducing the overall weight.

JP 2007-320348 A

  By the way, when the load input from the seat to the shock absorbing member at the time of a side collision is large, it is necessary to further improve the performance of absorbing the collision load by reinforcing the shock absorbing member support bracket. However, even if the impact-absorbing member support bracket is reinforced, if the strength of the floor tunnel to which it is fixed is low, the impact-absorbing member support bracket will fall laterally, effectively crushing the impact-absorbing member and absorbing the impact. There is a problem that the ability cannot be demonstrated.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to secure the shock absorbing capability of the shock absorbing member by firmly fixing the shock absorbing member support bracket to the floor tunnel and preventing the collapse.

  In order to achieve the above object, according to the first aspect of the present invention, the shock absorbing member is supported by the shock absorbing member support bracket fixed on the floor tunnel sandwiched between the left and right front seats, and the side surface of the vehicle. In a shock absorbing structure for a vehicle that absorbs collision energy by causing the front seat to interfere with the shock absorbing member at the time of a collision, a stiffener is superposed on a lower surface of the floor tunnel, and the floor tunnel is supported by the shock absorbing member support bracket and the stiffener. A vehicle impact absorbing structure is proposed, characterized in that the vehicle is fixed from above and below.

  According to the second aspect of the present invention, in addition to the configuration of the first aspect, the stiffener is formed in an inverted U shape so as to follow the upper wall and the left and right side walls of the floor tunnel. A shock absorbing structure for a vehicle is proposed, which is reinforced by a main reinforcing bead extending in the direction.

  According to the invention described in claim 3, in addition to the configuration of claim 2, the stiffener includes a plurality of joint portions joined to the floor tunnel and the shock absorbing member support bracket, and the plurality of the stiffeners. An impact absorbing structure for a vehicle is proposed, comprising a secondary reinforcing bead that is connected to the main reinforcing bead through between the joint portions of the vehicle.

  According to a fourth aspect of the present invention, in addition to the configuration of the third aspect, the height of the auxiliary reinforcing bead is lower than the height of the main reinforcing bead. Proposed.

  According to the invention described in claim 5, in addition to the structure of any one of claims 1 to 4, the hand brake support bracket for supporting the hand brake device and the stiffener are provided in the floor tunnel. A shock absorbing structure for a vehicle characterized by being fastened together is proposed.

  The first to third sub-reinforcement beads 34b, 34c, 34d of the embodiment correspond to the sub-reinforcement beads of the present invention, and the first to third joint portions 34e, 34f, 34g of the embodiment of the present invention. Corresponds to the joint.

  According to the configuration of the first aspect, since the shock absorbing member is supported by the shock absorbing member supporting bracket fixed on the floor tunnel sandwiched between the left and right front seats, the front seat interferes with the shock absorbing member at the time of a side collision of the vehicle. It is possible to absorb the collision energy. At this time, stiffeners are placed on the lower surface of the floor tunnel, and the floor tunnel is fixed from above and below with the shock absorbing member support bracket and stiffener, so the mounting strength of the shock absorbing member support bracket to the floor tunnel is increased, and the side collision of the vehicle In some cases, it is possible to prevent a situation in which the impact absorbing member support bracket is tilted laterally with respect to the floor tunnel and the impact absorbing member cannot exhibit a sufficient impact energy absorbing effect.

  According to the second aspect of the present invention, since the stiffener is formed in an inverted U shape along the upper wall and the left and right side walls of the floor tunnel, the stiffener and the floor tunnel are firmly integrated to form a floor tunnel by the stiffener. Since the stiffener is reinforced with the main reinforcing beads extending in the left-right direction, the strength of the stiffener against side collision can be further increased.

  According to the configuration of claim 3, the stiffener includes a plurality of joints joined to the floor tunnel and the shock absorbing member support bracket, and a secondary reinforcement connected to the main reinforcement bead through the joints. Since the bead is provided, the strength of the stiffener can be further increased by the synergistic effect of the joint portion, the main reinforcing bead and the auxiliary reinforcing bead.

  According to the fourth aspect of the present invention, since the height of the auxiliary reinforcing bead is lower than the height of the main reinforcing bead, the function of the main reinforcing bead for increasing the strength of the stiffener against side collision is prevented from being damaged by the auxiliary reinforcing bead. However, the strength of the entire stiffener can be increased by the auxiliary reinforcing bead.

  According to the fifth aspect of the present invention, since the hand brake support bracket and the stiffener for supporting the hand brake device are fastened together with the floor tunnel, the reinforcement effect of the floor tunnel is further enhanced by the cooperation of the stiffener and the hand brake support bracket. be able to.

The side view of the front seat part of a motor vehicle. FIG. 2 is an enlarged view of part 2 of FIG. 1. The exploded perspective view of an impact-absorbing member. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a sectional view taken along line 5-5 of FIG. The perspective view of a stiffener. 7 (A) -7 (A) line sectional view and 7 (B) -7 (B) line sectional view of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  As shown in FIG. 1, a floor tunnel 13 that protrudes upward from the floor panel 12 and extends in the longitudinal direction of the vehicle body is disposed between the left and right front seats 11, 11. The upper surface of the floor tunnel 13 has a center with an armrest 14a. Covered with a console 14. Inside the center console 14 and below the armrest 14a, an impact absorbing member support bracket 15 fixed to the upper surface of the floor tunnel 13 and an impact absorbing member 16 fixed to the upper surface of the impact absorbing member support bracket 15 are provided. And are arranged. A hand brake support bracket 17 is fixed to the upper surface of the floor tunnel 13 in front of the shock absorbing member support bracket 15, and a lever portion 18 a of the hand brake device 18 fixed to the upper surface of the hand brake support bracket 17 is the center console 14. Projecting into the vehicle interior. Brake cables 19, 19 having one end coupled to the lever portion 18 a of the hand brake device 18 pass through the front wall of the shock absorbing member support bracket 15 and the upper wall of the floor tunnel 13, pass through the interior of the floor tunnel 13, and the rear wheel Connected to the parking brake.

  As is apparent from FIGS. 2 to 5, the shock absorbing member support bracket 15 includes a front bracket 21 and a rear bracket 22. The front bracket 21 made of a sheet metal press has a plate-like front wall 21a extending in the left-right direction of the vehicle body, and a U-shaped opening 21b that opens upward is formed at the upper edge of the front wall 21a. The lower edge of 21a is bent forward to form the attachment portion 21c. In addition, two bolt holes 21d and 21d are formed on the left and right sides of the upper portion of the front bracket 21, and two bolt holes 21e and 21e are formed on the left and right sides of the mounting portion 21c.

  The rear bracket 22 made of sheet metal press has left and right side walls 22a, 22a and a rear wall 22b, and has a U-shape in plan view, and the front edges of the side walls 22a, 22a are bent outward in the left-right direction. Portions 22c and 22c are formed, and bolt holes 22d and 22d are formed above the mounting portions 22c and 22c. The front portions of the lower edges of the side walls 22a and 22a are bent outward in the left-right direction to form attachment portions 22e and 22e, and notches 22f and 22f that are recessed upward are formed at the rear portions of the lower edges of the side walls 22a and 22a. Is done. Further, the lower edge of the rear wall 22b is bent rearward to form two attachment portions 22g and 22g, and a circular inspection window 22h is formed at the center of the rear wall 22b.

  The shock absorbing member 16 includes a front member 23, left and right side members 24 and 24, and a rear member 25. The front member 23 made of a sheet metal press has a plate-like front wall 23a extending in the left-right direction of the vehicle body, and has mounting portions 23b, 23b bent forward on the left and right side edges, and a front edge on the upper edge. The mounting portion 23c is bent. The left side member 24 includes an upper wall 24a extending in the horizontal direction, a side wall 24b extending in the front-rear direction, a leg portion 24c extending inward in the left-right direction from the lower end of the side wall 24b, and an upper portion of the leg portion 24c. A bracket 24d hanging from the front end is provided, and bolt holes 24e and 24f are formed in the leg portion 24c and the bracket 24d, respectively. The right side member 24 has a shape that is substantially symmetrical to the left side member 24 described above.

  The rear member 25 includes a rear wall 25a extending in the left-right direction, a lower wall 25b extending horizontally forward from the lower edge of the rear wall 25a, and a pair of legs 25c extending downward from the left and right side edges of the lower wall 25b. , 25c. The upper edge and the left and right side edges of the rear wall 25a are bent rearward to form mounting portions 25d; 25e, 25e. The lower wall 25b is formed with two circular hollow holes 25f, 25f, the front edge of the lower wall 25b is bent downward to form a mounting portion 25g, and the left and right legs 25c, 25c Bolt holes 25h and 25h are respectively formed.

  A rectangular stiffener 34 made of sheet metal press is superimposed on the lower surface of the upper wall 13a of the floor tunnel 13 and the left and right side walls 13b, 13b to which the shock absorbing member support bracket 15 is attached, so that the shock absorbing member support bracket for the floor tunnel 13 is overlapped. The mounting strength of 15 is increased. As apparent from FIGS. 6 and 7, the stiffener 34 is curved in an inverted U shape as a whole along the cross-sectional shape of the floor tunnel 13.

  One stiffening bead 34a that extends linearly in the left-right direction is formed in the rear portion of the stiffener 34, and the groove-shaped first to third sub-reinforcing beads 34b that are shallower than the main reinforcing bead 34a; 34c; 34d and 34d are formed in the front-rear direction and the left-right direction. The first sub-reinforcement bead 34b extends straight in the left-right direction at the front portion of the stiffener 34, and the second sub-reinforcement bead 34c intersects the first sub-reinforcement bead 34b from the central portion in the left-right direction of the front edge of the stiffener 34. The pair of left and right third auxiliary reinforcing beads 34d, 34d extend rearward across the main reinforcing bead 34a from the second auxiliary reinforcing bead 34c to a position reaching the rear edge of the stiffener 34.

  The front portion of the stiffener 34 is formed with a pair of left and right first joint portions 34e and 34e that are partitioned by the first sub-reinforcement bead 34b and the second sub-reinforcement bead 34c, and are formed in a middle portion in the front-rear direction of the stiffener 34. Three second joint portions 34f that are partitioned by the main reinforcing bead 34a, the first sub reinforcing bead 34b, and the pair of third sub reinforcing beads 34d, 34d, and are raised, are formed. Three third joint portions 34g are formed which are partitioned by the reinforcing beads 34a and the pair of third auxiliary reinforcing beads 34d, 34d and are raised. Weld nuts 27 and 27 are provided on the back surfaces of the left and right first joint portions 34e and 34e, respectively.

  After welding W1 of the front wall 21a of the front bracket 21 of the shock absorbing member support bracket 15 and the mounting portions 22c, 22c of the side walls 22a, 22a of the rear bracket 22, the mounting portions 22e of the side walls 22a, 22a of the rear bracket 22 22e and attachment portions 22g, 22g of the rear wall 22b of the rear bracket 22 are welded W2 to the upper surface of the floor tunnel 13. At this time, the two welds W2 on the front side of the attachment portions 22e, 22e of the left and right side walls 22a, 22a of the rear bracket 22 are the two second left and right of the three second joint portions 34f of the stiffener 34. The joints 34f, 34f are integrally welded, and the two welds W2 on the rear side integrally form the two left and right third joints 34g, 34g of the three third joints 34g ... of the stiffener 34. Weld to.

  The rear end of the hand brake support bracket 17 is overlapped with the upper surface of the mounting portion 21c of the front wall 21a of the front bracket 21, and the rear end of the hand brake support bracket 17 and the bolt hole 21e of the mounting portion 21c of the front wall 21a, 21e, the floor tunnel 13 and the left and right first joints 34e, 34e of the stiffener 34 are screwed into the weld nuts 27, 27 so that the handbrake support bracket 17, The front bracket 21, the floor tunnel 13, and the stiffener 34 are fastened together. By adopting the above-described joint fastening structure, the number of fastening members can be reduced and the shock absorbing member support can be achieved as compared with the case where the hand brake support bracket 17, the front bracket 21 and the stiffener 34 are separately fastened to the floor tunnel 13. The mounting strength of the bracket 15 can be increased.

  When the shock-absorbing member support bracket 15 assembled in this way is viewed from the front-rear direction, the side walls 22a, 22a of the rear bracket 22 are narrowed from the bottom toward the top.

  The shock absorbing member 16 includes mounting portions 23b, 23b; 23c of the front wall 23a of the front member 23, front ends of the upper walls 24a, 24a of the left and right side members 24, 24, and left and right side members 24, 24. The front ends of the side walls 24b, 24b are welded W3, the mounting portions 25d; 25e, 25e of the rear wall 25a of the rear member 25, the rear ends of the upper walls 24a, 24a of the left and right side members 24, 24, The side walls 24 b of the side members 24, 24 are welded to the rear ends of the side walls 24 b, 24 b, the upper walls 24 a, 24 a of the left and right side members 24, 24 are welded W 5, and the lower wall 25 b of the rear member 25 is attached. The portion 25g is assembled by welding W6 to the upper rear surface of the front wall 23a of the front member 23. In this state, the leg portions 25c, 25c of the rear member 25 are superimposed on the left and right inner sides of the leg portions 24c, 24c of the left and right side members 24, 24, and the right leg portions 24c, 25c and the left leg portions 24c, When viewed from the front-rear direction, the distance 25c is narrower from the bottom to the top.

  When the shock absorbing member 16 assembled in this way is superimposed on the shock absorbing member support bracket 15, the left and right legs 24c and 25c of the shock absorbing member 16; The rear bracket 22 of the support bracket 15 is in contact with the laterally outer side surfaces of the side walls 22a, 22a inclined in a letter C shape. In this state, the left and right leg portions 24c, 25c; 24c, 25c of the shock absorbing member 16 pass through the bolt holes 24e, 25h; 24e, 25h and the side walls 22a, 22a of the rear bracket 22 of the shock absorbing member support bracket 15. The two bolts 28 and 28 to be engaged with the weld nuts 29 and 29 are screwed together. Also, bolt holes 22d and 22d of the rear bracket 22 of the shock absorbing member support bracket 15, bolt holes 21d and 21d of the front bracket 21, brackets 24d and 24d of the left and right side members 24 and 24 of the shock absorbing member 16, and The two bolts 30, 30 passing through the front member 23 of the shock absorbing member 16 are screwed into the weld nuts 31, 31.

  When the shock absorbing member 16 is assembled to the upper portion of the shock absorbing member support bracket 15, the front wall 23a and the rear surfaces of the left and right brackets 24d and 24d on which the shock absorbing member 16 is overlapped, and the front edges of the left and right legs 24c and 24c A groove α (see FIG. 2) is formed between the upper end of the front wall 21a of the front bracket 21 of the shock absorbing member support bracket 15 and the shock absorbing member. The inner surfaces of the left and right leg portions 24c, 25c; 24c, 25c that are opened downward in a 16-shaped manner are formed on the outer surfaces of the left and right side walls 22a, 22a that are opened in a folded-shaped manner in the shock absorbing member support bracket 15. By overlapping, the shock absorbing member 16 can be easily positioned with respect to the shock absorbing member support bracket 15.

  In this manner, with the shock absorbing member support bracket 15 and the shock absorbing member 16 being fixed in two upper and lower stages on the upper surface of the floor tunnel 13, their left and right side surfaces and upper surface are covered with the center console 14 (see FIG. 1). Is called. The other ends of the outer tubes 19a, 19a of the brake cables 19, 19 fixed at one end to the upper surface of the hand brake support bracket 17 via the bracket 32 pass through the opening 21b of the front bracket 21 and support the shock absorbing member. Guided into the bracket 15, passes through two openings 13 a, 13 a formed on the upper surface of the floor tunnel 13 and covered with grommets 33, 33, and extends to the rear wheel side. One end of the hand brake device Inner cables 19b and 19b connected to 18 lever portions 18a are slidably fitted inside the outer tubes 19a and 19a.

  Next, the operation of the embodiment of the present invention having the above configuration will be described.

  When the front seat 11 moves inward of the vehicle body due to a side collision of the vehicle, the inner side surface of the seat cushion collides with the side surface of the shock absorbing member 16 via the center console 14 and absorbs shock from the seat frame inside the front seat 11. Although a load acts on the member 16, the front wall 21 a of the front bracket 21 of the shock absorbing member support bracket 15 receives the load in the shearing direction, so that the impact absorbing member 16 having high strength is transmitted from the front seat 11. And the movement of the front seat 11 to the inside of the vehicle body can be prevented to ensure the occupant's living space. In particular, the shock absorbing member 16 has a complete box structure having a front wall 23a, a rear wall 25a, upper walls 24a and 24a, a lower wall 25b, and left and right side walls 24b and 24b. A shock absorbing effect can be obtained.

  Even if the strength of the shock absorbing member support bracket 15 is increased, if the strength of the floor tunnel 13 to which the shock absorbing member support bracket 15 is attached is low, the shock absorbing member support bracket 15 falls sideways while deforming the floor tunnel 13 due to a side collision load. As a result, the impact absorbing member 16 cannot exhibit a sufficient impact absorbing effect. However, according to the present embodiment, the stiffener 34 is overlaid on the lower surface of the floor tunnel 13 and the floor tunnel 13 is sandwiched and fixed by the shock absorbing member support bracket 15 and the stiffener 34 from above and below, so that the shock absorbing member for the floor tunnel 13 is secured. The mounting strength of the support bracket 15 is increased, and the impact absorbing member support bracket 15 falls laterally with respect to the floor tunnel 13 at the time of a side collision of the vehicle, and the impact absorbing member 16 cannot exhibit a sufficient impact energy absorbing effect. It can be prevented in advance.

  In particular, the stiffener 34 is formed in an inverted U shape along the upper wall 13a and the left and right side walls 13b, 13b of the floor tunnel 13, so that the stiffener 34 and the floor tunnel 13 are firmly integrated to form a floor tunnel by the stiffener 34. 13 and the stiffener 34 is reinforced by the main reinforcing bead 34a extending in the left-right direction, so that the strength of the stiffener 34 against side collision can be further increased.

  Further, the stiffener 34 is joined to the floor tunnel 13 and the shock absorbing member support bracket 15 by the first to third joint portions 34e, 34e; 34f ...; 34g ... and the first to third joint portions 34e, 34e; 34f..., 34g... Are provided, and the first to third sub-reinforcing beads 34b; 34c; 34d and 34d are connected to the main reinforcing beads 34a, so that the first to third joint portions 34e and 34e; 34f are provided. ..., 34g, the strength of the stiffener 34 can be further increased by the synergistic effect of the main reinforcing beads 34a and the first to third auxiliary reinforcing beads 34b; 34c; 34d, 34d. At this time, since the heights of the first to third sub-reinforcing beads 34b; 34c; 34d, 34d are lower than the height of the main reinforcing bead 34a, the function of the main reinforcing bead 34a for increasing the strength of the stiffener 34 against side collision is the first. The strength of the stiffener 34 as a whole can be increased by the first to third auxiliary reinforcing beads 34b; 34c; 34d, 34d, while being prevented from being damaged by the first to third auxiliary reinforcing beads 34b; 34c; 34d, 34d.

  Moreover, since the hand brake support bracket 17 and the stiffener 34 for supporting the hand brake device 18 are fastened together with the bolts 26 and 26 and the weld nuts 27 and 27 to the floor tunnel 13, the stiffener 34 and the hand brake support bracket 17 cooperate. The reinforcing effect of the floor tunnel 13 can be further enhanced.

  By the way, since the hand brake device 18 and the shock absorbing member support bracket 15 are arranged adjacent to each other on the upper surface of the floor tunnel 13, the brake cables 19 and 19 extending rearward from the hand brake device 18 are shock absorbing member support brackets. There is a problem in that the layout becomes difficult due to interference with 15. However, according to the present embodiment, the brake cable 19, through the opening 21 b formed in the front wall 21 a of the front bracket 21 of the shock absorbing member support bracket 15 and the openings 13 a and 13 a formed on the upper surface of the floor tunnel 13, The above-mentioned problem can be solved by laying out 19.

  On the other hand, if the opening 21b is formed in the front wall 21a of the front bracket 21 of the shock absorbing member support bracket 15, the strength of the front bracket 21 is greatly reduced due to the formation of the opening 21b, and the side collision of the vehicle Since the shock absorbing member support bracket 15 is easily deformed sometimes, the shock absorbing member 16 configured with high strength may not be able to exhibit a sufficient shock absorbing effect.

  However, according to the present embodiment, the upper end opening portion of the U-shaped opening 21b of the front wall 21a of the front bracket 21 is closed by the lower end of the front member 23 of the shock absorbing member 16, and the shock absorbing member. Since the front member 23 of 16 is reinforced by being connected to the upper walls 24a, 24a and the left and right side walls 24b, 24b formed in an inverted U shape, the strength of the front bracket 21 due to the formation of the opening 21b. The reduction can be sufficiently compensated, and the total strength of the shock absorbing member support bracket 15 and the shock absorbing member 16 combined can be increased to enhance the shock absorbing effect.

  Further, since the left and right leg portions 24c, 24c depending from the left and right side walls 24b, 24b of the shock absorbing member 16 are overlapped and fixed to the left and right side walls 22a, 22a of the shock absorbing member support bracket 15, the shock absorbing member 16 is fixed. The impact absorbing effect can be further enhanced by firmly integrating with the impact absorbing member support bracket 15.

  Further, since an inspection window 22h is formed on the rear wall 22b of the shock absorbing member support bracket 15, maintenance of the brake cables 19 and 19 disposed inside the shock absorbing member support bracket 15 is facilitated through the inspection window 22h. It can be carried out. Furthermore, the brake cables 19 and 19 are bifurcated inside the shock absorbing member support bracket 15 and are led to the two openings 13a and 13a of the floor tunnel 13. At this time, shock absorption near the openings 13a and 13a is performed. Since the notches 22f and 22f are formed in the left and right side walls 22a and 22a of the member support bracket 15, the bifurcated brake cables 19 and 19 can be prevented from interfering with the shock absorbing member support bracket 15. .

  The embodiments of the present invention have been described above, but various design changes can be made without departing from the scope of the present invention.

  For example, the shapes of the main reinforcing beads 34a and the first to third auxiliary reinforcing beads 34b; 34c; 34d, 34d of the stiffener 34 are not limited to the embodiment.

11 Front Seat 13 Floor Tunnel 13a Upper Wall 13b Side Wall 15 Shock Absorbing Member Support Bracket 16 Shock Absorbing Member 17 Hand Brake Support Bracket 18 Hand Brake Device 34 Stiffener 34a Main Reinforcement Bead 34b First Subreinforcement Bead (Subreinforcement Bead)
34c 2nd sub reinforcement bead (sub reinforcement bead)
34d 3rd sub reinforcement bead (sub reinforcement bead)
34e 1st junction part (joint part)
34f 2nd junction part (joint part)
34g Third joint (joint)

Claims (5)

The shock absorbing member (16) is supported by a shock absorbing member supporting bracket (15) fixed on a floor tunnel (13) sandwiched between the left and right front seats (11), and the front seat (11) is supported at the time of a side collision of the vehicle. In a shock absorbing structure for a vehicle that absorbs collision energy by interfering with the shock absorbing member (16),
A stiffener (34) is placed on the lower surface of the floor tunnel (13), and the floor tunnel (13) is fixed from above and below by the shock absorbing member support bracket (15) and the stiffener (34). Vehicle shock absorption structure.   The stiffener (34) is formed in an inverted U shape along the upper wall (13a) and the left and right side walls (13b) of the floor tunnel (13), and is reinforced by a main reinforcing bead (34a) extending in the left-right direction. The shock absorbing structure for a vehicle according to claim 1, wherein:   The stiffener (34) includes a plurality of joints (34e, 34f, 34g) joined to the floor tunnel (13) and the shock absorbing member support bracket (15), and the joints (34e, 34e, 34g). 34. The vehicle shock absorbing structure according to claim 2, further comprising a secondary reinforcing bead (34b, 34c, 34d) connected to the main reinforcing bead (34a) through a space between 34f, 34g).   4. The vehicle impact absorbing structure according to claim 3, wherein a height of the auxiliary reinforcing beads (34 b, 34 c, 34 d) is lower than a height of the main reinforcing beads (34 a).   The hand brake support bracket (17) for supporting the hand brake device (18) and the stiffener (34) are fastened together with the floor tunnel (13). The shock absorbing structure for a vehicle according to claim 1.

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