JP2008012934A - Anchor reinforcing structure of automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor reinforcing structure of an automobile which reduces the cost with a simple constitution and does not increase the weight too much. <P>SOLUTION: The anchor reinforcing structure 10 of the automobile has a double floor structure providing a floor board above a floor panel 11, and the floor board is provided on an upper surface of a floor side reinforcement 14 mounted to the floor panel. A seat bracket (first bracket) 17 is fixed to the floor side reinforcement 14 so as to be exposed on the floor board, a seat rail 20 for fixing a seat belt anchor is connected to the seat bracket 17 through a seat rail bracket (second bracket 18), and a cross member 13 provided on the floor panel 11 is connected to the seat bracket 17 through an anchor reinforcement 19. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a reinforcing structure around a mounting position of a seat anchor or a seat belt anchor of an automobile, and more particularly to an anchor reinforcing structure in an automobile having a double floor structure.

  Conventionally, as shown in FIG. 5, a seat belt anchor reinforcement structure 1 for a front seat belt in an automobile such as a passenger car is provided with a seat belt against a cross member 3 provided on a floor panel 2 constituting a passenger compartment floor. A seat rail 4 to which an anchor is fixed is attached via a seat rail bracket 5.

  According to the seatbelt anchor reinforcement structure 1 having such a configuration, when a load is input from the seatbelt to the seatbelt anchor at the time of an automobile collision or the like, the tensile force F due to this load is applied from the seat rail 4 to the seat. The tensile force F is distributed by being transmitted to the cross member 3 via the rail bracket 5.

  By the way, there is an automobile having a double floor structure in which a floor panel is provided on the upper surface of the floor side reinforcement. In the automobile having such a double floor structure, as shown in FIG. 6, a large cross member 7 whose upper part is exposed from the upper surface of the inner floor side reinforcement 6 is used instead of the cross member 3. A seat rail 4 is attached to the cross member 7 via a seat rail bracket 5.

  However, in such a configuration, since the large cross member 7 is used, the conventional small cross member 3 cannot be used, and a newly designed cross member 7 must be used. Therefore, it is necessary to manufacture a mold for a new cross member 7, which is very expensive and the weight of the entire automobile becomes heavy because the cross member 7 itself is relatively heavy.

  On the other hand, although the method of enlarging the seat rail bracket 5 is also conceivable, the number of welding points increases in order to satisfy the offset in the height direction and the welding strength by the double floor structure. Accordingly, similarly, the manufacturing cost of the new seat rail bracket 5 increases, the weight thereof increases, and the assembly cost increases due to the increase in the number of welding points.

  The present invention has been made in view of the above points, and has a simple structure, and can be attached to a seat anchor or a seat belt anchor at low cost and without much increase in weight. An object of the present invention is to provide an anchor reinforcement structure.

  To achieve the above object, the present invention provides a vehicle having a double floor structure in which a floor board is provided above a floor panel, and the floor board is provided on an upper surface of a floor side reinforcement attached to the floor panel. An anchor reinforcing structure, wherein the first bracket is fixed to the floor side reinforcement so as to be exposed on the floor board, and the seat rail or the seat belt anchor is connected to the first bracket via the second bracket. The cross member provided on the floor panel is connected to the first bracket via the anchor reinforcement.

  In the automobile seat belt anchor reinforcement structure of the present invention, preferably, the anchor reinforcement is bent forward in an inverted L shape at a mounting portion of the upper end of the anchor reinforcement to the first bracket.

  In the vehicle seat belt anchor reinforcement structure of the present invention, preferably, the anchor reinforcement is arranged to extend along the input load direction of the second bracket.

  According to the above configuration, even in a double-floor automobile, it is possible to attach a seat or seat belt anchor at low cost by using a conventional cross member. At that time, the seat rail to which the seat belt anchor is fixed or the seat belt anchor not directly provided with the seat belt anchor or the seat belt anchor fixed directly without using the seat rail is connected to the first bracket via the second bracket. Since the first bracket is connected to the cross member via the anchor reinforcement, the first bracket acts on the first bracket via the second bracket by an input load applied to the seat belt anchor or the seat rail. The tensile force to be transmitted is further transmitted to the cross member via the anchor reinforcement and dispersed.

  Therefore, the seat belt anchor or the seat anchor can be attached by diverting the conventional relatively small cross member and the second bracket as they are. Thereby, it is not necessary to newly manufacture a large-sized cross member, a seat rail bracket, and the like, and the cost is reduced and the weight of the reinforcing structure is not increased.

  According to the present invention, the input load of the seat belt or the seat anchor is distributed and transmitted to the cross member via the anchor reinforcement, so that the welding between the first bracket and the inner floor side reinforcement is performed. The load applied to is reduced. Therefore, since it is not necessary to increase the number of welding points between them, an increase in assembly cost is suppressed.

  When the anchor reinforcement is bent in an inverted L shape forward at the attachment portion to the first bracket at its upper end, the input load from the seat belt or the anchor of the seat even if it is a simple bent shape Can withstand enough.

  When the anchor reinforcement is arranged so as to extend along the input load direction of the second bracket, the input load from the seat belt or the anchor of the seat is efficiently transferred to the cross member via the anchor reinforcement. Can be transmitted.

Hereinafter, the present invention will be described in detail based on the embodiments shown in the drawings.
1 and 2 show a configuration of an embodiment of a vehicle seat belt anchor reinforcement structure according to the present invention. An automobile seat belt anchor reinforcement structure 10 shown in these drawings is provided for a right seat in a front seat provided on a floor panel 11 constituting a passenger compartment floor.

  The floor panel 11 includes two cross members extending in the lateral direction in the vicinity of the front and rear ends of the seat, that is, a front cross member 12 and a rear cross member 13, and the floor panel 11 extends front and rear in the center. A tunnel portion 11a protruding upward is provided. Further, the floor panel 11 is provided with a floor side reinforcement, that is, an inner floor side reinforcement 14 and an outer floor side reinforcement 15 on both sides of each seat. In FIG. Only the menment 14 is shown.

  As shown in FIG. 3, the upper floor board 16 made of an aluminum floor straddles the upper surface of both floor side reinforcements 14 and 15 located on both sides in each seat region, as shown in FIG. 3. It is provided as such. In FIG. 3, a floor side member 15 a, which is a skeleton member constituting the side edge of the passenger compartment, is disposed outside the outer floor side reinforcement 15.

  The seat belt anchor reinforcement structure 10 includes a seat bracket 17 as a first bracket, a seat rail bracket 18 as a second bracket, and a seat anchor reinforcement 19 as an anchor reinforcement.

  The seat bracket 17 is connected to the inner floor side reinforcement 14 so as to be exposed on the upper floor board 16. The seat bracket 17 is composed of a flat iron plate or the like, and is connected to the inner floor side reinforcement 14 by welding or the like.

  The seat rail bracket 18 connects the rear end of the seat rail 20 to which the seat belt anchor (not shown) is fixed to the seat bracket 17, and the upper end is connected to the rear end of the seat rail 20 by welding or the like. At the same time, the lower end is connected to the seat bracket 17 by bolting or the like. The seat rail bracket 18 is disposed so as to extend obliquely upward toward the front so as to follow the acting direction of the input load from the seat belt anchor to the rear end of the seat rail 20.

  The seat anchor reinforcement 19 connects the seat bracket 17 to the rear cross member 13 provided on the floor panel 11 constituting the lower floor, and the upper end thereof is bolted to the seat bracket 17 and the seat rail bracket 18. The lower end is connected to the rear cross member 13 by bolting or the like.

  The seat anchor reinforcement 19 is disposed so as to extend obliquely upward toward the front so as to follow the acting direction of the input load from the seat belt anchor to the rear end of the seat rail 20. Further, as shown in FIG. 4, the seat anchor reinforcement 19 is composed of an iron plate or the like that is elongated in the longitudinal direction, and the attachment portions 19a and 19b to the seat bracket 17 and the rear cross member 13 are bent by bending. Is formed. Accordingly, the seat anchor reinforcement 19 is configured to receive a tensile force with respect to the input load from the seat rail 20.

  The front end of the seat rail 20 is connected to the front cross member 12 via another seat rail bracket 21. In this case, a very large load is not input to the seat rail bracket 21 from the seat rail 20 including the seat belt anchor.

  The vehicle seat belt anchor reinforcing structure 10 according to the embodiment of the present invention is configured as described above, and the seat rail 20 to which the seat belt anchor is fixed is connected to the front cross member 12 via the seat rail bracket 21 at the front end thereof. The rear end is connected to the seat bracket 17 via the seat rail bracket 18 and also connected to the rear cross member 13 via the seat anchor reinforcement 19.

  Accordingly, when a forward load is input to the seat belt anchor fixed to the seat rail, for example, in the event of a car collision, the rear end of the seat rail 20 is lifted upward with the front end as the center of rotation. The power to try to break is generated. Due to this force, a tensile force F is generated in the seat rail bracket 18 that supports the rear end of the seat rail 20. The tensile force F is transmitted to the seat bracket 17 via the seat rail bracket 18 and further transmitted to the rear cross member 13 via the seat anchor reinforcement 19 to be dispersed. At that time, since the seat rail bracket 18 and the seat anchor reinforcement 19 receive the tensile force F in the longitudinal direction, they can sufficiently withstand the tensile force F.

  Here, the seat rail bracket 18 and the seat anchor reinforcement 19 according to the present embodiment need not be newly manufactured in large size, and the existing product can be diverted as it is. Costs are reduced and weight is not significantly increased. Further, since the input load from the seat rail 20 is transmitted and distributed to the rear cross member 13 via the seat anchor reinforcement 19, the load acting on the welding between the seat bracket 17 and the inner floor side reinforcement 14 is reduced. Is done. Therefore, the number of welding points for the floor side reinforcement 14 inside the seat bracket 17 is reduced. Further, since the seat anchor reinforcement 19 receives the tensile force in the longitudinal direction, the seat anchor reinforcement 19 can be easily manufactured at a low cost by bending and can sufficiently withstand the tensile force F caused by the input load. it can.

  According to the seat belt anchor reinforcement structure 10 for an automobile according to the embodiment of the present invention, the strength around the seat belt anchor attachment portion of the automobile having a double floor structure with a simple configuration at low cost and without much increase in weight. Can be secured.

  The present invention can be implemented in various forms without departing from the spirit of the present invention. For example, the applied automobile seat is not limited to the right seat in the front seat shown in the embodiment, but can be applied to the left seat in the front seat or the second seat or the third seat as well.

  In the above description, the case where the seat belt anchor is fixed to the seat rail 20 has been described, but the present invention can also be applied to the case where the seat belt anchor is not attached to the seat rail 20. In this case, the present invention is mainly configured as a reinforcement structure for the seat anchor. For example, a load acting on the seat at the time of a vehicle collision is applied to the seat rail 20 that supports the seat, and the second that supports the seat rail 20. The bracket 18, the first bracket 17 connected to the second bracket 18, and the anchor reinforcement 19 can be dispersed in the cross member 13.

  Furthermore, although illustration is omitted, it can also be configured as a reinforcement structure of a seat belt anchor that is directly connected to the second bracket without the seat rail 20 being interposed. In this case, the present invention is mainly configured as a reinforcement structure for the seat belt anchor. For example, a load acting on the seat belt anchor at the time of a vehicle collision is applied to the second bracket 18 that supports the seat belt anchor and the second bracket 18. The cross member 13 can be dispersed through the first bracket 17 connected to the bracket 18 and the anchor reinforcement 19. The seat rail 20 is not supported by the second bracket 18 and is connected to the floor side reinforcement 14 via another bracket.

It is a schematic sectional drawing which shows the structure of one Embodiment of the seatbelt anchor reinforcement structure of the motor vehicle by this invention. It is sectional drawing of the front-back direction of the motor vehicle in the seatbelt anchor reinforcement structure of FIG. FIG. 2 is a lateral cross-sectional view passing through a rear cross member in the seat belt anchor reinforcement structure of FIG. 1. It is an expansion perspective view which shows the seat anchor reinforcement in the seatbelt anchor reinforcement structure of FIG. It is a schematic sectional drawing which shows the structure of an example of the conventional seatbelt anchor reinforcement structure of a motor vehicle. It is a schematic sectional drawing which shows the structure of an example of the seatbelt anchor reinforcement structure of the motor vehicle of the conventional double floor structure.

Explanation of symbols

10 Seat belt anchor reinforcement structure 11 Floor panel 12 Front cross member 13 Rear cross member 14 Floor side reinforcement (inside)
15 Floor side reinforcement (outside)
16 Floor board 17 Seat bracket 18, 21 Seat rail bracket 19 Seat anchor reinforcement 20 Seat rail

Claims (3)

An anchor reinforcement structure in an automobile having a double floor structure in which a floor board is provided above the floor panel, and the floor board is provided on an upper surface of a floor side reinforcement attached to the floor panel,
The first bracket is fixed to the floor side reinforcement so as to be exposed on the floor board,
A seat rail or a seat belt anchor is connected to the first bracket via a second bracket;
An automobile anchor reinforcing structure, wherein a cross member provided on the floor panel is connected to the first bracket via an anchor reinforcement.   The anchor reinforcement structure for an automobile according to claim 1, wherein the anchor reinforcement is bent in an inverted L shape forward at an attachment portion of the upper end of the anchor reinforcement to the first bracket.   The anchor reinforcement structure for an automobile according to claim 1, wherein the anchor reinforcement is disposed so as to extend along an input load direction of the second bracket.

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