JP4333600B2 - Anchor support structure for fixed object - Google Patents

Description

  The present invention relates to an anchor support structure for an object to be fixed such as a child seat fixed to a vehicle body, for example.

  As an example of fixing an object to be fixed to a vehicle body such as an automobile, there is a fixing structure in which a connecting portion provided on a child seat is connected to an anchor provided on a floor panel when a child seat is fixed on a rear seat (for example, Patent Documents). 1).

  In this type of fixing structure, the anchor is supported by the skeleton member of the vehicle body. In general, a skeleton of a vehicle body includes a pair of side members extending in the front-rear direction and a plurality of cross members provided across the side members.

  In a vehicle body having such a skeleton, when a plurality of anchors are provided along the vehicle width direction, a cross member is disposed at a position corresponding to the anchor through the floor panel, and a load acting on the anchor is supported by the cross member. ing.

  Of the plurality of anchors, the anchor provided on the outer side in the vehicle width direction is also supported by the side member. Then, the load acting on the anchor provided on the outer side in the vehicle width direction is transmitted by the side member to the cross member in the vicinity of the cross member on which the anchor is supported.

  The load acting on the anchor provided on the inner side in the vehicle width direction is also transmitted to the cross member near the cross member at a position corresponding to the anchor via the floor panel.

With the anchor support structure described above, the load acting on the child seat, that is, the load acting on the anchor is effectively dispersed.
JP 2001-10383 A

  On the other hand, when the engine is arranged at the rear of the vehicle body, an opening for engine maintenance is formed in the floor panel. This maintenance opening is covered with a lid member except during engine maintenance.

  It is conceivable that the maintenance opening is formed in the vicinity of the anchor. In such a case, the area of the floor panel in the vicinity of the anchor is reduced by the maintenance opening. For this reason, the load acting on the anchor provided on the inner side in the vehicle width direction tends not to be transmitted to the skeleton member other than the cross member provided at the position corresponding to the anchor.

  If it becomes like this, it will become difficult to disperse | distribute the load which acts on an anchor, and since a load concentrates on the cross member of the position corresponding to an anchor, it is unpreferable.

  Accordingly, an object of the present invention is to provide an anchor support structure for a fixed object in which a load is effectively dispersed.

The anchor support structure for an object to be fixed according to the present invention includes a floor panel having a maintenance opening, an anchor provided on the floor panel, and a first skeleton member that is provided on the floor panel at a position corresponding to the anchor and supports the anchor. When provided on the opposite side of the first frame member across the maintenance opening in the floor panel, and a second frame member which Ru with a flange along the floor panel covers the opening for maintenance, the second and a lid member connected to the flange of the frame member. The anchor includes a first connecting part that fixes the fixed object to the vehicle body by connecting the fixed object to be fixed to the vehicle body. A second connecting portion is provided on the anchor. A 3rd connection part engaged with a 2nd connection part is provided in a cover member.

  In the anchor support structure of the fixed object configured as described above, the floor panel is reduced in area by forming the maintenance opening in the floor panel, and the load acting on the anchor is difficult to be transmitted to the second skeleton member. Even if it is a case, the load which acts on an anchor will be transmitted to a 2nd frame | skeleton member through a cover member by employ | adopting the anchor support structure of this invention here.

  In a preferred embodiment of the present invention, the fixed object is a child seat.

  In the present invention, the load acting on the anchor is effectively transmitted to the second skeleton member via the lid member. Therefore, the load acting on the anchor is effectively distributed.

  An anchor support structure for an object to be fixed according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3, taking as an example a case where the child seat 5 is fixed to the rear seat 17 of the automobile 10. The child seat 5 is an example of an object to be fixed as referred to in the present invention.

  FIG. 1 is a schematic view of an automobile 10 having the anchor support structure of the present invention. As shown in FIG. 1, the vehicle body 11 of the automobile 10 includes a frame 12, a floor panel 13, a dash panel 14, an engine 15, a front seat 16, a rear seat 17, and the like.

  The floor panel 13 is fixed on the frame 12. The frame 12 will be specifically described later.

  The floor panel 13 is connected to the dash panel 14 at the front. The floor panel 13 and the dash panel 14 define a guest room 20. The engine 15 is disposed below the floor panel 13 at the rear portion of the vehicle body 11.

  The front seat 16 is provided on the floor panel 13 in the front part of the cabin 20. The rear seat 17 is provided behind the front seat 16 and ahead of the engine 15.

  FIG. 2 shows the vicinity of a place where the rear seat 17 is provided in the rear portion of the floor panel 13. In FIG. 2, the rear seat 17 and the child seat 5 are omitted. Since the engine 15 is disposed at the rear portion of the vehicle body 11, as shown in FIGS. 1 and 2, the rear portion 13 a of the floor panel 13 is formed in a substantially two-stage shape so as to escape the engine 15.

  The first stage of the rear portion 13 a of the floor panel 13 is a support portion 21 that supports a part of the seat portion 17 a of the rear seat 17. An inclined portion 22 extending obliquely upward and rearward is formed from the rear end of the support portion 21 to the rear. The rear side of the inclined portion 22 is formed substantially horizontally. Therefore, the rear portion 13a of the floor panel 13 is formed in a substantially two-stage shape.

  In the floor panel 13, a maintenance opening 23 is formed on the rear side of the rear end of the inclined portion 22. The maintenance opening 23 penetrates the floor panel 13 and is used when the engine 15 is maintained.

  A lid member 40 is provided in the maintenance opening 23. The lid member 40 has a size that covers the maintenance opening 23 from above. The lid member 40 has a plurality of ribs 41 formed on the surface thereof, and has high rigidity. A seal member 46 is provided on the periphery of the lid member 40.

  As shown in FIG. 1, the floor panel 13 is provided with an anchor portion 50 for fixing the child seat 5 on the rear seat 17. In the present embodiment, for example, two child seats 5 can be fixed on the rear seat 17 in the vehicle width direction.

  For this reason, as shown in FIG. 2, two anchor portions 50 are provided on the floor panel 13 in the vehicle width direction. Each anchor part 50 is formed, for example, substantially symmetrically with respect to the center in the vehicle width direction, and therefore, one anchor part 50 will be described.

  The anchor unit 50 includes, for example, a first anchor 51 and a second anchor 52. The first anchor 51 is provided in the vicinity of the rear portion of the inclined portion 22 at the outer end in the vehicle width direction. The first anchor 51 includes a first child dress train sheet plate 53 and a first hook member 54.

  The first child dress train sheet plate 53 is fixed on the floor panel 13. The first hook member 54 is fixed on the first child dress train sheet plate 53. The first hook member 54 is a connecting portion provided on the child seat 5 and connected to a connecting portion (not shown) to be connected to the first hook member 54.

  The second anchor 52 is provided in the vehicle width direction inner side than the first anchor 51 in the vicinity of the rear portion of the inclined portion 22. That is, the second anchor 52 is provided in front of the maintenance opening 23 on the floor panel 13. The second anchor 52 will be specifically described later.

  Here, an example of the frame 12 will be described. The frame 12 includes a pair of side members 30, a rear floor cross member 31 (indicated by a dotted line in FIG. 2), and a lateral rod cross member 32 (indicated by a dotted line in FIG. 2).

  Each side member 30 is disposed, for example, along the outer edge in the vehicle width direction of the floor panel 13 on the lower surface of the floor panel 13 and extends in the front-rear direction.

  The rear floor cross member 31 is an example of a first skeleton member in the present invention. The rear floor cross member 31 is provided on the lower surface of the floor panel 13 so as to face the vicinity of the rear portion of the inclined portion 22. The rear floor cross member 31 extends between the side members 30 in the vehicle width direction. Each end of the rear floor cross member 31 is fixed to a side member 30 facing each end.

  The rear floor cross member 31 has a substantially concave cross section that opens toward the floor panel 13. 3 is a cross-sectional view taken along line F3-F3 shown in FIG. As shown in FIG. 3, a flange 31 a is provided along the floor panel 13 at each upper edge of the rear floor cross member 31. One flange 31 a is fixed to the lower surface of the inclined portion 22. The other flange 31 a is fixed to the lower surface of the floor panel 13, which is a horizontal portion behind the inclined portion 22 and ahead of the maintenance opening 23.

  That is, the rear floor cross member 31 is provided on the opposite side of the floor panel 13 from the first and second anchors 51 and 52 (position corresponding to the first and second anchors 51 and 52). The first and second anchors 51 and 52 are fixed to the rear floor cross member 31 with, for example, bolts. Therefore, the first and second anchors 51 and 52 are supported by the rear floor cross member 31.

  Further, the first anchor 51 is preferably provided so as to face the joint portion between the side member 30 and the rear floor cross member 31. If it does in this way, the 1st anchor 51 will also be fixed also to the side member 30 with a volt | bolt etc., for example, and will also be supported also by the side member 30.

  The lateral rod cross member 32 is an example of a second skeleton member referred to in the present invention. The lateral rod cross member 32 is provided behind the maintenance opening 23. The lateral rod cross member 32 extends between the side members 30 in the vehicle width direction. Each end of the lateral rod cross member 32 is fixed to a side member 30 facing each end.

  As shown in FIG. 3, the lateral rod cross member 32 has a substantially U-shaped cross section that opens upward. A first flange 32a is formed in a forward direction from an upper end edge located in front of the lateral rod cross member 32. The first flange 32 a extends to a position overlapping the rear portion 42 of the lid member 40. A second flange 32 b is formed rearward from the upper end edge located behind the lateral rod cross member 32. The first and second flanges 32 b are fixed to the lower surface of the floor panel 13.

  With the frame structure described above, the maintenance opening 23 is surrounded by the side members 30, the rear floor cross member 31, and the lateral rod cross member 32.

  Here, the load applied to the child seat 5 will be described. The load applied to the child seat 5 acts on the anchor portion 50, that is, the first anchor 51 and the second anchor 52.

  As described above, the first anchor 51 is supported by the rear floor cross member 31 and the side member 30. Therefore, the load acting on the first anchor 51 is transmitted to the rear floor cross member 31 and the side member 30 and also to the lateral rod cross member 32 through the side member 30.

  For this reason, the load acting on the first anchor 51 is supported by the rear floor cross member 31, the side member 30, and the lateral rod cross member 32.

  Since the second anchor 52 is supported by the rear floor cross member 31 as described above, a part of the load acting on the second anchor 52 is transmitted to the rear floor cross member 31. A part of the load acting on the second anchor 52 is also transmitted to the lateral rod cross member 32 through the floor panel 13.

  However, since the maintenance opening 23 is formed in the floor panel 13, a structure for effectively transmitting a part of the load acting on the second anchor 52 to the lateral rod cross member 32 is required.

  For this reason, the anchor support structure of the present invention is adopted as the support structure of the second anchor 52. The support structure of the second anchor 52 will be specifically described. The support structure of the second anchor 52 includes a floor panel 13, a rear floor cross member 31, a lateral rod cross member 32, a second anchor 52, and a lid member 40.

  The second anchor 52 includes a second child dress train sheet plate 56 and a second hook member 57. The second child dress train sheet plate 56 is fixed to the rear portion of the inclined portion 22 on the floor panel 13. The second hook member 57 is fixed on the second child dress train sheet plate 56.

  The second hook member 57 has, for example, a substantially annular shape and is formed so as to have a substantially rectangular plane in the front-rear direction.

  As shown in FIGS. 2 and 3, the second hook member 57 includes a base 57a, a first connecting portion 57b, and a second connecting portion 57c. The base portion 57 a extends along the inclined portion 22. The base 57 a is fixed on the second child dress train sheet plate 56. The first connecting portion 57b extends forward from the front end of the base portion 57a, and is formed, for example, in a shape that intersects the base portion 57a.

  The first connecting portion 57b is connected to a child seat connecting portion 5a (indicated by a two-dot chain line) provided on the child seat 5 (indicated by a two-dot chain line in FIG. 3). The child seat connecting portion 5a is a connecting portion to be connected to the first connecting portion 57b when the child seat 5 is fixed on the rear seat 17. Thus, the child seat 5 is fixed on the rear seat 17 by being connected to the first anchor 51 and the second anchor 52.

  The second connecting portion 57c is formed at the rear end of the base portion 57a. As shown in FIG. 3, the second connecting portion 57 c extends to substantially the same height as the upper surface of the lid member 40 along the inclination of the base portion 57 a. Since the second hook member 57 has a substantially annular shape, the rear end of the second connecting portion 57c has a substantially U-shaped plane that opens forward as shown in FIG.

  As shown in FIG. 3, the rear portion 42 of the lid member 40 is fixed to the lateral rod cross member 32 by bolts 60 and nuts 61. The fixing structure of the rear portion 42 of the lid member 40 will be specifically described. A bolt receiving portion 43 is formed in the rear portion 42 at a position overlapping the first flange 32a. As shown in FIG. 2, the bolt receiving portions 43 are formed at two locations apart in the vehicle width direction. As shown in FIG. 3, the bolt receiving portion 43 is formed so as to substantially contact the floor panel 13, for example.

  The bolt receiving portion 43, the floor panel 13, and the first flange 32 a are fastened together by a bolt 60 and a nut 61. Accordingly, the rear portion 42 of the lid member 40 is fixed to the lateral rod cross member 32 by the bolt 60 and the nut 61.

  A third connecting portion 45 is provided at the front portion 44 of the lid member 40. The third connecting portion 45 is provided corresponding to the second connecting portion 57c. For this reason, the 3rd connection part 45 is spaced apart in the vehicle width direction, and is formed in two places.

  The 3rd connection part 45 is demonstrated concretely. In the front portion 44 of the lid member 40, a third hook member 70 is fixed at a location facing the second connecting portion 57c in the front-rear direction. The front end of the third hook member 70 extends to the second connecting portion 57c.

  As shown in FIG. 3, the front end portion 71 of the third hook member 70 is formed in a hook shape so as to be hooked on the rear end of the second connecting portion 57c having a substantially U-shape that is open at the front. . Thus, the third connecting portion 45 is formed by, for example, fixing the third hook member 70 to the lid member 40.

  With the above structure, the second connecting portion 57 c of the second hook member 57 is connected to the lid member 40 via the third connecting portion 45. The lid member 40 is fixed to the lateral rod cross member 32 by bolts 60 and nuts 61. That is, the second anchor 52 is supported by the lateral rod cross member 32 via the lid member 40.

  Next, the operation of the anchor portion 50 when a load is applied to the child seat 5 will be described. For example, when the automobile 10 collides from the front, as shown by the arrow A in FIG.

  This load acts on the first and second anchors 51 and 52 in the direction of peeling the first and second anchors 51 and 52 from the floor panel 13. Part of the load acting on the first anchor 51 is transmitted to the rear floor cross member 31. Another part of the load acting on the first anchor 51 is transmitted to the side member 30.

  The load transmitted to the side member 30 is transmitted to the lateral rod cross member 32 through the side member 30. That is, the load acting on the first anchor 51 is effectively distributed to the rear floor cross member 31, the side member 30, and the lateral rod cross member 32.

  Part of the load acting on the second anchor 52 is transmitted to the rear floor cross member 31. Another part of the load acting on the second anchor 52 is transmitted to the lid member 40 via the second hook member 57 and the third connecting portion 45. The load transmitted to the lid member 40 is transmitted to the lateral rod cross member 32 via the bolt 60.

  As described above, the maintenance opening 23 is formed in the floor panel 13 to reduce the area of the floor panel 13, and the load acting on the second anchor 52 is transmitted to the lateral rod cross member 32 through the floor panel 13. Even if it is difficult to do so, the load that acts on the second anchor 52 is transmitted to the lateral rod cross member 32 via the lid member 40 by adopting the anchor support structure of the present invention. .

  Therefore, the load acting on the second anchor 52 is effectively distributed to the rear floor cross member 31 and the lateral rod cross member 32.

  Further, by adopting the anchor support structure of the present invention to the anchor support structure of the child seat 5, the child seat 5 is firmly fixed on the rear seat 17, so that the safety of the child seat 5 is improved.

Schematic of a motor vehicle provided with the anchor support structure of the to-be-fixed object based on one Embodiment of this invention. The perspective view which shows the rear part of the floor panel shown by FIG. Sectional drawing which follows the F3-F3 line | wire shown by FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 5 ... Child seat (fixed object), 11 ... Vehicle body, 13 ... Floor panel, 23 ... Maintenance opening, 31 ... Rear floor cross member (1st frame member), 32 ... Lateral rod cross member (2nd frame member) 40 ... lid member, 45 ... third connecting portion, 52 ... second anchor (anchor), 57b ... first connecting portion, 57c ... second connecting portion.

Claims (2)

A floor panel having a maintenance opening;
An anchor provided on the floor panel and provided with a first connecting portion for fixing the fixed object to the vehicle body by connecting the fixed object to be fixed to the vehicle body;
A first skeleton member that is provided on the floor panel at a position corresponding to the anchor and supports the anchor;
Wherein said first frame member across the maintenance opening provided on the opposite side in the floor panel, and a second frame member which Ru with a flange along the floor panel,
It covers the maintenance opening, comprising a lid member connected to said flange of said second frame member,
The anchor is provided with a second connecting portion, and the lid member is provided with a third connecting portion that is engaged with the second connecting portion. Support structure.   The anchor support structure for an object to be fixed according to claim 1, wherein the object to be fixed is a child seat.

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