JP5186999B2 - Body structure - Google Patents

Description

  The present invention relates to a vehicle body structure in which a seat fixing member having an anchor for fixing a child seat is fixed on a vehicle body floor portion on the back side of the seat on which the child seat is placed.

As this type of technology, as disclosed in Patent Document 1, for example, a seat leg disposed on the floor of a vehicle body is provided with an anchor for connecting a child seat connector, or disclosed in Patent Document 2. In addition, there is one in which an anchor is provided on a cross member arranged on a floor of a vehicle body. Patent Document 1 also describes that a connecting piece for locking the rear end of the seat cushion of the rear seat is provided on the cross member. This connecting piece is intended to prevent the rear portion of the seat cushion from being displaced upward when a rearward impact on the vehicle body, that is, an instantaneous acceleration toward the rear of the vehicle, is applied.
JP 2001-55069 A JP 2007-168616 A

  By the way, when a strong rearward impact is applied to the vehicle body at the time of a frontal collision of the vehicle, a large tensile force is applied to the anchor from the child seat that is intended to maintain a fixed position. Then, the seat leg and the cross member are deformed, and the portion of the floor portion of the vehicle body where the cross member is fixed is locally deformed. On the other hand, in the configuration of Patent Document 1, the lower part of the frame of the seat back is located above the anchor, so the anchor displaced forward and upward contacts the lower part of the frame, and the displacement is restricted to some extent. Is expected to be. However, in this configuration, since the lower part of the frame is disposed on the upper side and the lower part of the frame is separated from the anchor, the seat leg and the cross member are easily deformed. As a result, the child seat may be displaced from the fixed position.

  In addition, there is a vehicle in which a trunk space can be expanded by tilting the seat back of the rear seat forward and folding it on a seat cushion. And the back of the seat back that has been tilted forward and the floor of the original trunk are almost continuous, making it easy to load luggage. At this time, the gap between the back surface of the seat back that has been tilted forward and the front end of the floor surface of the trunk is covered with a carpet that extends from the trunk floor surface to the back surface of the seat back. On the other hand, the lower corners of the back of the seat back, like the other parts, are formed by covering the cushion material covered on the frame with the skin, and therefore easily contract round due to the tension of the skin. For this reason, a wide groove-shaped depression is easily formed between the back surface of the seatback that is tilted forward and the floor surface front end of the trunk. As a result, there has been a problem that a load is caught on the depressed portion or a small thing enters the depressed portion. Since the seat back described in Patent Document 1 has a configuration in which the lower part of the frame is disposed on the upper side, such inconvenience cannot be avoided. In order to prevent this, it is conceivable to extend the lower part of the frame downward so that the frame receives the tension of the skin on the back side of the seat back. However, with such a configuration, the frame and the metal panel provided on the back surface of the frame are increased in size, which is a great inconvenience for vehicles that are light weight.

  The present invention has been made paying attention to such problems existing in the prior art. The purpose is to be able to effectively suppress the displacement of the child seat when a rearward impact is applied to the vehicle body, and the back of the lower end of the seat back that has been tilted forward and the floor of the trunk. An object of the present invention is to provide a vehicle body structure in which a depression portion is not easily formed.

  In order to achieve the above object, according to the first aspect of the present invention, a seat fixing member having an anchor for fixing a child seat is fixed on the vehicle body floor portion on the back side of the seat on which the child seat is placed. The vehicle body structure is characterized in that a displacement restricting portion that abuts on an upper side of the seat fixing member and restricts the displacement when the seat fixing member is displaced upward is provided below the skeleton of the seat back in the seat.

  According to a second aspect of the present invention, the skeleton portion includes a frame-shaped pipe frame along the periphery of the seat back, and the displacement restricting portion is a contact piece fixed to a lower portion of the pipe frame. It is characterized by that.

The invention according to claim 3 is characterized in that the skeleton portion includes a panel frame integrated so as to cover the entire back surface of the pipe frame.
According to a fourth aspect of the present invention, the seat fixing member includes a pair of left and right brackets that are respectively fixed on the vehicle body floor portion, and a connecting member that connects the brackets to each other. Are fixed to each other, and contact portions with which the displacement restricting portions abut are provided.

The invention according to claim 5 is characterized in that the anchor is welded to the bracket.
The invention according to claim 6 is characterized in that a locking portion for locking the rear end of the seat cushion and restricting the displacement is provided at the center of the connecting member when the seat cushion is displaced upward. To do.
(Function)
In this invention, when the seat fixing member to which the child seat is connected is deformed or the vehicle body floor portion is partially deformed due to the impact applied to the vehicle body in the rearward direction, the lower part of the skeleton of the seat back The sheet fixing member comes into contact with the displacement restricting portion provided in the member, and the displacement is restricted. For this reason, the deformation of the seat fixing member and the partial deformation of the vehicle body floor are restricted, and the upward displacement of the seat fixing member is effectively restricted. Further, the lower end portion of the seat back is held in a protruding shape by the cushion material being supported by a displacement regulating member provided at the lower end of the seat back. For this reason, when the seat back is tilted forward and folded on the seat cushion, the width of the gap formed between the rear surface of the lower end of the seat back and the front end of the floor of the trunk or the luggage compartment is reduced. Accordingly, the width and depth of the depressed portion formed between the folded seat back and the trunk or the luggage compartment are reduced.

  According to the present invention, it is possible to effectively suppress the displacement of the child seat when a rearward impact is applied to the vehicle body, and between the rear surface of the lower end portion of the seat back that is tilted forward and the floor surface of the trunk. The effect that it is possible to make it difficult for the depressed portion to be formed.

Next, an embodiment of the present invention will be described with reference to FIGS.
A rear seat 10 as a seat shown in FIGS. 1 and 2 is provided in a sedan type or wagon type vehicle, and the back side thereof faces a trunk 11 or a luggage compartment. The rear seat 10 includes a seat cushion 13 fixed on the floor 12a of the vehicle body 12, and a left seat back 14 and a right seat back 15 as seat backs divided into, for example, 6: 4 in the vehicle width direction. Prepare. The seat cushion 13 and the side seat backs 14 and 15 are not connected to each other, and each is independently supported by the vehicle body 12. Each seat back 14, 15 can be folded forward and folded onto the seat cushion 13.

  Further, as shown in FIG. 3, when the seat backs 14 and 15 are folded onto the seat cushion 13, the back surfaces of the seat backs 14 and 15 are arranged at substantially the same height as the floor surface 11 a of the trunk 11. Is done. Note that a carpet 16 laid on the floor surface 11a of the trunk 11 is attached to the back of each of the seat backs 14 and 15 so as to extend forward.

  As shown in FIG. 4, the seat cushion 13 includes a cushion frame 17 at a lower portion thereof. The cushion frame 17 is formed in a square frame shape with a linear steel material, and a pair of left and right fitting portions 18 is disposed at the front portion thereof, and a pair of left and right left locking portions 19L and right side engagement portions are disposed at the rear portion thereof. Stop part 19R is arranged. Further, the seat cushion 13 is configured by assembling a cushion material and a skin (not shown) to a skeleton including the cushion frame 17. The seat cushion 13 is positioned by fitting the fitting portion 18 on the mounting member 20 provided on the floor portion 12a of the vehicle body 12, and the left and right side seat backs 14 disposed on the upper side of the rear portion. The upward displacement is regulated by 15.

  As shown in FIG. 5, the left seat back 14 includes a back frame 21 as a pipe frame for securing rigidity and a panel frame integrated so as to cover the entire back surface of the back frame 21. The back panel 22 is provided. The left seat back 14 is configured by assembling a cushion material and an outer skin to a skeleton formed by the back frame 21, the back panel 22, and the like. A left contact piece 23 as a displacement restricting portion for restricting the displacement of the child seat CS mounted on the rear seat 10 in front of the left seat back 14 is fixed to the lower center of the back frame 21.

  Further, as shown in FIG. 6, the right seat back 15 includes therein a back frame 24 and a back panel 25 similar to the left seat back 14, and the right seat back 15 is provided at the lower left portion of the back frame 24. A right contact piece 26 as a displacement restricting portion for restricting the displacement of the child seat CS mounted on the rear seat 10 is fixed.

  As shown in FIGS. 7 and 9, the right bracket for fixing the child seat CS placed on the seat cushion 13 in front of the right seat back 15 on the floor 12 a on the back side of the right seat back 15. The assembly 31 is fixed. Similarly, a left bracket assembly 30 for fixing a child seat CS placed on the seat cushion 13 in front of the left seat back 14 is fixed on the floor 12a on the back side of the left seat back 14. . In this embodiment, the left bracket assembly 30 and the right bracket assembly 31 are both seat fixing members, and they are disposed on the left side and the right side of the vehicle body at a distance from each other. Since the left bracket assembly 30 and the right bracket assembly 31 have the same configuration, the following description will be made using a common member number.

  As shown in FIG. 10, each of the bracket assemblies 30 and 31 includes a pair of left and right brackets 33 fixed on the floor 12a of the vehicle body 12, and a connecting member 32 that connects the brackets 33 in the vehicle width direction. I have. Anchors 34 to which connectors (illustrated in FIG. 7) CN of the child seat CS are connected are welded to the brackets 33, respectively. Each bracket 33 has a pair of projecting pieces 36 having a contact portion 35 for contacting the left contact piece 23 of the left seat back 14 or the right contact piece 26 of the right seat back 15. It is formed by. Further, a hook 37 is attached to the center of the connecting member 32 as a locking portion capable of locking the locking portion 19L or 19R of the cushion frame 17 of the seat cushion 13.

  As shown in FIGS. 7 and 9, the right contact piece 26 of the right seat back 15 faces the contact portion 35 of the left bracket 33 in the right bracket assembly 31 from above. Further, the left contact piece 23 of the left seat back 14 faces the contact portion 35 of the right bracket 33 in the left bracket assembly 30 from above. Further, as shown in FIG. 7, the right engagement portion 19 </ b> R of the cushion frame 17 faces the hook 37 of the right bracket assembly 31 from below. Similarly, the left side locking portion 19L of the cushion frame 17 faces the hook 37 of the left bracket assembly 30 from below.

  In the vehicle body structure configured as described above, as shown in FIGS. 7 and 8, the lower end portion of the right seat back 15 is cushioned by the right abutment piece 26 provided on the lower left side of the back frame 21. It is held in a protruding shape by supporting the material. Similarly, the lower end portion of the left seat back 14 is held in a protruding shape by the cushion material being supported by the left abutting piece 23 provided at the lower center of the back frame 21. Therefore, as shown in FIG. 8, when the left and right seatbacks 14, 15 of the rear seat 10 are folded forward and folded on the seat cushion 13, the rear surfaces of the lower ends of the both side seatbacks 14, 15 and the floor of the trunk 11 The width of the gap formed between the front end of the surface 11a is smaller than that in the prior art, and the formation of the groove-like depression on the carpet 16 is suppressed.

  Further, when a rearward impact is applied to the vehicle body 12 as in the case of a frontal collision of the vehicle, the seat cushion 13 is caused to rotate upward with the left and right fitting portions 18 as fulcrums. Force acts. That is, the rear portion of the seat cushion 13 is in a state of trying to float up with respect to the floor portion 12 a of the vehicle body 12. On the other hand, in this embodiment, as shown in FIG. 11, when the rear portion of the seat cushion 13 is about to rise, the right side locking portion 19 </ b> R of the cushion frame 17 of the seat cushion 13 is hooked to the right bracket assembly 31. The left side locking portion 19 </ b> L is locked to the hook 37 of the left bracket assembly 30. As a result, the lifting of the seat cushion 13 from the rear floor 12a is restricted.

  Furthermore, when a rearward impact is applied to the vehicle body 12, a large tensile force is applied to both anchors 34 of the bracket assemblies 30, 31 from the child seat CS. Then, the bracket seats 30 and 31 are deformed, or the floor 12a of the vehicle body 12 is partially deformed, so that the child seat CS tends to be displaced upward with respect to the rear seat 10. In contrast, in this embodiment, as shown in FIG. 11, when the bracket assembly 30, 31 is displaced upward with respect to the rear seat 10 by a tensile force, the contact portion of the bracket 33 of the bracket assembly 30, 31. 35 contacts the lower ends of the contact pieces 23 and 26 of the seat backs 14 and 15. At this time, the contact pieces 23 and 26 are extended downward from the lower portions of the seat backs 14 and 15 and are in positions close to the contact portions 35 of the bracket assemblies 30 and 31. For this reason, the upward displacement of the bracket assemblies 30 and 31 is effectively restricted. As a result, the deformation of the bracket assemblies 30 and 31 and the partial deformation of the floor portion 12a of the vehicle body 12 are effectively restricted, and the displacement of the child seat CS is effectively suppressed.

According to this embodiment, the following effects can be obtained.
(1) The rear seat 10 is brought into contact with the lower portion of the back frames 21 and 24 of the seat backs 14 and 15 with the contact portions 35 of the bracket assemblies 30 and 31 which are to be displaced upward by an impact applied to the vehicle body. A left contact piece 23 and a right contact piece 26 that restrict displacement are provided.

  Therefore, since the lower ends of the seat backs 14 and 15 are maintained in a projecting shape by the contact pieces 23 and 26, the rear surfaces of the left and right seat backs 14 and 15 that are tilted forward and the front end of the floor 11a of the trunk 11 It is possible to reduce the width and depth of the depression formed between the two. For this reason, it is possible to prevent inconveniences such as the luggage being caught by the drop portion or the small thing entering the drop portion.

  Further, the upward displacement of the bracket assemblies 30 and 31 can be immediately regulated by the contact pieces 23 and 26 provided near the bracket assemblies 30 and 31. For this reason, the upward displacement of the child seat CS fixed to the anchor 34 of the bracket assembly 30, 31 can be effectively restricted.

  (2) Since the upward displacement of the bracket assembly 30, 31 can be suppressed by the contact pieces 23, 26, as a result, the deformation of the floor surface 11a (floor panel) of the portion to which the bracket assembly 30, 31 is fixed is performed. Can be suppressed.

  (3) By providing the contact pieces 23 and 26, it is not necessary to enlarge the back panels 22 and 25 and the back frames 21 and 24 of the seat backs 14 and 15 downward, and the vehicle weight is reduced. Can contribute.

  (4) When the seat cushion 13 is displaced upward with respect to the floor portion 12a of the vehicle body 12, the bracket assembly 30, 31 engages with the locking portions 19L, 19R of the cushion frame 17 to restrict the displacement. Were provided. Therefore, when a rearward impact is applied to the vehicle body 12, the upward displacement of the seat cushion 13 relative to the vehicle body 12 can be restricted. For this reason, the displacement of the child seat CS placed on the seat cushion 13 can be effectively restricted.

In addition, this embodiment can also be changed and embodied as follows.
The present invention is embodied in a vehicle body structure in a vehicle in which a child seat is fixed to a seat including a seat back in which left and right are integrated.

  The present invention is embodied in a vehicle body structure in a vehicle in which a child seat is fixed to a seat having a pair of left and right seat backs having the same width.

The perspective view which shows the rear seat in the vehicle body structure of one Embodiment. The longitudinal cross-sectional view which shows a rear seat. The longitudinal cross-sectional view which shows a rear seat. The perspective view which shows the cushion frame in a seat cushion. The perspective view which shows the frame | skeleton of the left side seat back. The perspective view which shows the frame | skeleton of the right seat back. The longitudinal cross-sectional view which shows the principal part. The longitudinal cross-sectional view which shows the principal part. The front view which shows both right-and-left seat back and left-right both bracket assembly. The perspective view which shows a bracket assembly. The longitudinal cross-sectional view which shows the action state of the principal part.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 10 ... Rear seat as a seat, 11 ... Trunk, 11a ... Floor surface, 12 ... Vehicle body, 12a ... Floor part, 13 ... Seat cushion, 14 ... Left seat back as a seat back, 15 ... Right seat back, 23 ... Displacement Left side abutting piece as a restricting part, 26... Right side abutting piece, 30... Left bracket assembly as a seat fixing member, 31... Right side bracket assembly, 32 .. connecting member, 33. Contact part, 37 ... Hook as a locking part, CS ... Child seat.

Claims (6)

In the vehicle body structure in which the seat fixing member including the anchor for fixing the child seat is fixed on the vehicle body floor portion on the back side of the seat on which the child seat is placed,
A vehicle body structure characterized in that a displacement restricting portion that abuts on an upper side of the seat fixing member and restricts the displacement when the seat fixing member is displaced upward is provided below the skeleton of the seat back of the seat. The skeleton part includes a frame-like pipe frame along the periphery of the seat back,
The vehicle body structure according to claim 1, wherein the displacement restricting portion is a contact piece fixed to a lower portion of the pipe frame.   The vehicle body structure according to claim 2, wherein the skeleton portion includes a panel frame integrated so as to cover the entire back surface of the pipe frame. The seat fixing member includes a pair of left and right brackets that are respectively fixed on the vehicle body floor, and a connecting member that connects the brackets to each other.
The vehicle body structure according to any one of claims 1 to 3, wherein each bracket is provided with a contact portion to which the anchor is fixed and to which the displacement restricting portion contacts. .   The vehicle body structure according to claim 4, wherein the anchor is welded to the bracket.   The center of the connecting member is provided with a locking portion that locks the rear end of the seat cushion when the seat is displaced upward and restricts the displacement. Body structure.

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