JP2010089635A - Seat fixing structure for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat fixing structure for a vehicle capable of reducing inputs into a rear fixing part of a seat for the vehicle caused by collisions of cargoes. <P>SOLUTION: A bracket 28 is provided to be integrally extended in a HV (Hybrid) battery 24 on a rear side of a rear seat 10, and the bracket 28 is co-fastened and fixed integrally with a rear seat hinge part 20 of the rear seat 10 with a fixing bolt 30. When cargoes collide with a seat back 14, load F1 is applied to the seat back 14, and load F2 is acted on the rear seat hinge part 20 in an upper direction. At the same time as the actions, inertia moment directed to the front of the vehicle is acted on the HV battery 24, and the inertia moment is acted as load F3 directed in a lower direction on the rear seat hinge part 20 via the bracket 28. As a result, the load F2 and the load 3 cancel with each other to reduce and suppress a load input into the rear seat hinge part 20. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle seat fixing structure in a vehicle such as an automobile.

  In recent years, in vehicles such as automobiles, so-called hybrid (hereinafter referred to as HV) cars have been proposed for energy saving. This type of HV car is equipped with an HV battery. In particular, in a “sedan type” HV car, the HV battery is generally mounted and fixed on the rear side of the rear seat of the luggage space.

  That is, as shown in FIG. 2, in a general “sedan type” HV car, the rear seat 40 is fixed to the vehicle body floor 45 by the front seat hinge portion 42 and the rear seat hinge portion 44. An HV battery 46 is mounted on the side. The HV battery 46 is fixed to the vehicle body floor 45 by a front fixing portion 48 and a rear fixing portion 50. The upper part of the HV battery 46 also serves as a floor surface 52 of the luggage compartment, and a load 54 can be placed on the floor surface 52.

  By the way, in such a vehicle equipped with the HV battery 46, the floor 52 of the luggage compartment in the luggage space is set relatively high for the HV battery 46. For example, if the vehicle is suddenly decelerated, the cargo is loaded. When 54 moves forward of the vehicle (in the direction of the arrow FR) and collides with the rear seat 40, it collides with the upper position (span S) of the rear seat 40 and a load P1 is applied to the rear seat 40. Therefore, due to the load P1 applied to the rear seat 40, a large load P2 (moment load) acts on the fixing bolt 56 and the like of the rear seat hinge portion 44 that fixes the rear seat 40. Accordingly, the fixing strength of the rear seat 40 (particularly, the rear seat hinge portion 44) is increased so as to prevent the fixing bolt 56 from being broken and the vehicle body floor 45 from being lifted and deformed in response to such a large load P2 (input). It was necessary to set large. For this reason, it was a cause of an increase in cost and weight.

  On the other hand, in a vehicle equipped with such an HV battery, a battery mounting structure has been proposed in which a reinforcing member is provided on the battery cover and a rear seat is attached to the reinforcing member (see, for example, Patent Document 1).

However, in the battery mounting structure as shown in the above-mentioned patent document, the strength of the rear fixing part of the rear seat is naturally improved by the reinforcing material, but if the load collides with the rear seat, a large load acting on the rear fixing part of the rear seat is assumed. (Input) cannot be reduced or reduced at all, and in such a situation, a large load still acts on the bolt or the like. Therefore, defects such as the need to set the strength of the reinforcing material to a large value have not been solved, and a more suitable measure has been demanded.
JP-A-11-99832

  In consideration of the above-described facts, the present invention can reduce the input to the vehicle seat rear fixed portion caused by the collision of the load or the like in the vehicle seat in which the fixed equipment is mounted and fixed on the rear side. The purpose is to obtain a fixed structure.

  According to a first aspect of the present invention, there is provided a vehicle seat fixing structure including: a vehicle seat having at least a rear portion fixed to a vehicle body by a seat hinge portion; a fixed equipment mounted and fixed on a rear side of the vehicle seat; And a bracket provided integrally extending toward the vehicle seat on the front side of the equipment, and the bracket is fixed together with the seat hinge portion.

  In the vehicle seat fixing structure according to the first aspect, the fixed equipment is mounted and fixed on the rear side of the vehicle seat, and a bracket is integrally extended to the fixed equipment. Further, the bracket is fixed together with the seat hinge portion on the rear side of the vehicle seat.

  Here, for example, if the load mounted on the rear of the vehicle seat moves forward and collides with the vehicle seat, for example, when the vehicle suddenly decelerates, the upward direction is directed to the seat hinge portion that fixes the vehicle seat. The load (moment load) acts. At the same time, a moment of inertia acting forward of the vehicle acts on the fixed equipment mounted and fixed on the rear side of the vehicle seat, which acts as a downward load on the seat hinge portion via the bracket. To do. Therefore, the upward load due to the collision of the load and the downward load acting via the bracket cancel each other, and as a result, the load input to the seat hinge portion is reduced and suppressed.

  In this way, the weight of the fixed equipment itself acts as an input reduction force through the bracket. In other words, the fixed equipment itself contributes to the reduction and suppression of the input to the seat hinge portion, and thus other special There is no need to increase the fixing strength of the seat hinge portion by using a reinforcing material or the like, and it does not cause an increase in cost and weight. In addition, it is possible to cope with a large load with the minimum necessary strength setting of the seat hinge portion, and it is possible to prevent the bolt of the seat hinge portion from breaking, the floor lifting deformation, and the like.

  A vehicle seat fixing structure according to a second aspect of the present invention is the vehicle seat fixing structure according to the first aspect, wherein the fixing equipment is a hybrid battery.

  In the vehicle seat fixing structure according to claim 2, since the fixed equipment mounted and fixed on the rear side of the vehicle seat is a hybrid battery, the relatively heavy HV battery itself is input to the seat hinge portion. This greatly contributes to the reduction and suppression, and is even more effective.

  In the vehicle seat fixing structure according to the first aspect of the present invention, the fixed equipment itself contributes to the suppression of the input to the seat hinge portion (the vehicle seat rear fixed portion), and the input to the seat hinge portion due to a load collision or the like. This has an excellent effect of preventing the bolts at the seat hinge portion from being broken and the floor from being lifted and deformed.

  The vehicle seat fixing structure of the invention according to claim 2 has an excellent effect that the relatively heavy HV battery itself can contribute to suppression of input to the seat hinge portion.

  Hereinafter, an embodiment of the present invention will be described with reference to FIG. In the figure, the arrow FR indicates the vehicle front direction, and the arrow RE indicates the vehicle rear direction.

  FIG. 1 is a schematic side view showing the overall configuration of a rear seat 10 as a vehicle seat to which a vehicle seat fixing structure according to an embodiment of the present invention is applied and peripheral components.

  The rear seat 10 includes a seat cushion 12, a seat back 14, and a headrest 16, and the seat cushion 12 is fixed to the vehicle body floor 22 by a front seat hinge portion 18 and a rear seat hinge portion 20.

  On the other hand, an HV battery 24 as a fixed equipment is mounted on the rear side of the rear seat 10 (seat back 14). The HV battery 24 is fixed to the vehicle body floor 22 by a rear fixing portion 26.

  Further, a bracket 28 is integrally provided at the front portion of the HV battery 24 so as to extend toward the seat back 14 of the rear seat 10. The front end portion of the bracket 28 reaches the rear seat hinge portion 20 of the rear seat 10, and the front end portion of the bracket 28 is fixed to the vehicle body floor 22 by fastening together with the rear seat hinge portion 20 by a fixing bolt 30. It has become.

  Further, the upper part of the HV battery 24 also serves as a floor surface 32 of the cargo room, and a load 34 can be placed on the floor surface 32.

  The operation and effect of the present embodiment will be described below.

  In the fixing structure of the rear seat 10 having the above-described configuration, an HV battery 24 is mounted and fixed on the rear side of the rear seat 10 (seat back 14), and a bracket 28 is integrally extended to the HV battery 24. . Further, the bracket 28 is fastened together with a fixing bolt 30 together with the rear seat hinge portion 20 of the rear seat 10.

  Here, for example, when the vehicle suddenly decelerates, the load 34 placed on the floor 32 behind the rear seat 10 moves forward (in the direction of the arrow FR) and collides with the seat back 14 of the rear seat 10. F1 is added to the seat back 14. For this reason, the load F2 (moment load) acts upward on the rear seat hinge portion 20 that fixes the rear seat 10 by the load F1 applied to the seat back 14.

  At the same time, an inertia moment toward the front of the vehicle (in the direction of the arrow FR) acts on the HV battery 24 mounted and fixed on the rear side of the rear seat 10, and this is applied to the rear seat hinge portion 20 via the bracket 28. It acts as a load F3 directed in the direction. Therefore, the upward load F2 due to the collision of the load 34 with the seat back 14 and the downward load F3 acting via the bracket 28 cancel each other, and are input to the rear seat hinge portion 20 as a result. The load is reduced and suppressed.

  Accordingly, it is possible to prevent breakage of the fixing bolt 30 of the rear seat hinge portion 20 and lifting deformation of the vehicle body floor 22.

  Thus, in the fixing structure of the rear seat 10 according to the present embodiment, the weight of the HV battery 24 itself acts on the rear seat hinge portion 20 as an input reduction force via the bracket 28. In other words, the HV battery 24 itself Contributes to the reduction and suppression of the input to the rear seat hinge portion 20, so there is no need to increase the fixing strength of the rear seat hinge portion 20 with another special reinforcing material, etc., which causes an increase in cost and weight. It will never be. Further, it becomes possible to cope with a large load with the minimum necessary strength setting of the rear seat hinge portion 20, and it is possible to prevent the fixing bolt 30 of the rear seat hinge portion 20 from being broken, the vehicle body floor 22 from being lifted and deformed, and the like. it can.

  In addition, in this case, since the HV battery 24 is applied as a fixed equipment mounted and fixed on the rear side of the rear seat 10, the relatively heavy HV battery 24 itself is input to the rear seat hinge portion 20. This greatly contributes to reduction and suppression, and is more effective. Furthermore, the luggage space set above the HV battery 24 is not eroded unnecessarily.

  As described above, in the fixing structure of the rear seat 10 according to the present embodiment, the HV battery 24 itself as a fixing equipment contributes to the suppression of input to the rear seat hinge portion 20 (the rear fixing portion of the rear seat 10), and the load Thus, the input to the rear seat hinge portion 20 due to the collision of the seat back 14 with the seat back 14 can be mitigated, and the fixing bolt 30 of the rear seat hinge portion 20 can be prevented from being broken and the vehicle body floor 22 being lifted and deformed. It has an excellent effect.

  In the present embodiment, an example in which the HV battery 24 is applied as the fixed equipment and the vehicle seat fixing structure is applied to the HV battery 24 is described. However, the fixed equipment is not limited to this, and the rear seat is used. The present invention can also be applied to other fixed equipment mounted and fixed on the rear side of 10, and in particular, in the case of a heavy fixed equipment, a more remarkable effect can be obtained.

  Furthermore, in this embodiment, although the example which applied the rear seat 10 as a vehicle seat was demonstrated, it is not restricted to this, For example, it can apply also to other vehicle seats, such as a front seat.

1 is a schematic side view showing an overall configuration of a rear seat and peripheral parts to which a vehicle seat fixing structure according to an embodiment of the present invention is applied. It is a schematic side view which shows the conventional rear seat mounting structure for vehicles and the whole structure of peripheral components.

Explanation of symbols

10 Rear seat (vehicle seat)
18 Front seat hinge part 20 Rear seat hinge part 22 Vehicle body floor 24 HV battery (fixed equipment)
28 Bracket 30 Fixing bolt F1 load F2 load F3 load

Claims (2)

A vehicle seat having at least a rear portion fixed to the vehicle body by a seat hinge portion;
Fixed equipment mounted and fixed on the rear side of the vehicle seat;
A bracket provided integrally extending toward the vehicle seat on the front side of the fixed equipment;
The bracket is fixed together with the seat hinge portion.
A vehicle seat fixing structure.   The vehicle seat fixing structure according to claim 1, wherein the fixing equipment is a hybrid battery.

Images