JP2009208590A - Steering member mounting structure - Google Patents

Abstract

Provided is a steering member mounting structure in which a cockpit module can be easily assembled to a vehicle body, the rigidity of a steering member can be sufficiently secured, and further, the impact force can be sufficiently absorbed at the time of a vehicle frontal collision. .
A steering member mounting structure in which a steering member (5) in a cockpit module is mounted on a dash panel via a post bracket (12), and the post bracket (12) is divided into a post bracket upper (13) and a post bracket lower (14). At the same time, a long hole 18B is formed in the post bracket upper 13, and a notch hole 25B is formed in the post bracket lower 14. Then, a bolt is passed through the long hole 18B and the notch hole 25B, and the bolt is tightened with a nut, so that the post bracket upper 13 and the post bracket lower 14 are slidably fastened to each other in the longitudinal direction of the vehicle body.
[Selection] Figure 2

Description

  The present invention relates to a steering member mounting structure in which a steering member incorporated in a cockpit module is mounted on a dash panel via a post bracket.

  In an automobile, an instrument panel is installed in the front part of the passenger compartment. The instrument panel is provided with instruments and the like on the outside, and accommodates an air conditioner, an air conditioner duct, and the like on the inside. When such instruments, air conditioners, air conditioner ducts and the like are previously attached to the instrument panel to form a unit, the unit is called a cockpit module.

  In recent years, cockpit modules have been delivered to automobile manufacturers after being assembled by suppliers. Inside the cockpit module, one steering member is incorporated in the vehicle width direction. In the automobile manufacturer, both ends of the steering member in the vehicle width direction are placed on the vehicle body panel near the front pillar, and the steering member in the vehicle width direction intermediate. The cup pit module is assembled to the front part of the passenger compartment by attaching the parts to the dash panel of the vehicle body via post brackets.

  Incidentally, a steering shaft is also incorporated in the cockpit module, and this steering shaft is fixed to the steering member. At the time of frontal collision of the vehicle, the impact force to the front of the vehicle acts on the steering shaft due to the secondary collision. At this time, if the amount of displacement of the steering member to the front of the vehicle is small, the impact force due to the secondary collision will be sufficiently Cannot absorb.

Therefore, the steering member is attached to the instrument panel via a bracket so that the bracket is disengaged in the event of a frontal collision so that the steering member can be easily displaced forward and the impact force absorption effect due to secondary collision is increased. A steering member mounting structure has been proposed (see, for example, Patent Document 1).
JP 2000-203364 A

  However, in the technique disclosed in Patent Document 1 among the above conventional techniques, since the steering member is attached to the instrument panel via the bracket and supported by the instrument panel, the steering member has sufficient rigidity. There is a problem that cannot be secured.

  Further, in the case where the steering member is attached to the dash panel via the post bracket, the steering member can have a sufficient rigidity, but there is a problem that the impact force at the time of the frontal collision cannot be sufficiently absorbed. In other words, when the vehicle crashes forward, the impact of the collision is absorbed by the dash panel moving toward the rear of the vehicle. However, in the configuration in which the steering member is attached to the dash panel via the post bracket, the dash panel vehicle Backward movement will be prevented.

  Furthermore, in the case where the steering member is attached to the dash panel via the post bracket, when the cockpit module is assembled to the vehicle body, if there is a manufacturing error of the post bracket or a mounting error of the post bracket to the steering member, the post bracket There is also a problem that a gap is formed between the front end of the door and the dash panel, or the front end of the post bracket and the dash panel are too tight, making it difficult to assemble the cockpit module to the vehicle body.

  An object of the present invention is to provide a steering member mounting structure in which a cockpit module can be easily assembled to a vehicle body, the rigidity of a steering member can be sufficiently secured, and further, the impact force can be sufficiently absorbed at the time of a vehicle front collision. Is to provide.

  In order to solve the above problems, the present invention is characterized in that an improvement is made to a post bracket for attaching a steering member to a dash panel. That is, the present invention is a steering member mounting structure in which a steering member incorporated in a cockpit module is mounted to a dash panel via a post bracket, and the post bracket is divided into two, and one post bracket is connected to the dash panel. The other post bracket is attached to the steering member on the panel, and both the post brackets are fastened together so as to be slidable in the longitudinal direction of the vehicle body.

  According to the present invention, since the post bracket is divided into two parts, it becomes easy to match the total length of the post bracket to the distance between the steering member and the dash panel, and the cockpit module can be assembled to the vehicle body very easily. it can.

  Moreover, since the steering member is attached to the dash panel via the post bracket, the rigidity of the steering member can be sufficiently ensured.

  Furthermore, since both post brackets are slidably fastened to each other in the longitudinal direction of the vehicle, both post brackets slide relative to the longitudinal direction of the vehicle and can sufficiently absorb the impact force caused by the collision. it can.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a schematic configuration of a steering member mounting structure according to the present invention. An instrument panel 2 is installed in the front part of the passenger compartment 1 of the automobile. The upper part of the instrument panel 2 is disposed in contact with a dash panel 4 that partitions the vehicle compartment 1 and the engine compartment 3. Steering in the vehicle width direction (perpendicular to the plane of the drawing in the figure) is inside the instrument panel 2. A member 5 is provided.

  Although not shown in the drawing, the instrument panel 2 has instruments and the like attached to the outside, and accommodates an air conditioner, an air conditioner duct, and the like on the inside. When such instruments, an air conditioner, an air conditioner duct, and the like and the steering member 5 are previously attached to the instrument panel 2 to form a unit, the unit is called a cockpit module 6.

  The left and right ends (both ends in the vehicle width direction) of the steering member 5 are attached to a vehicle body panel (not shown) near the front pillar of the vehicle body. The cockpit module 6 is provided with a steering shaft 7 that obliquely penetrates the cockpit module 6 with the vehicle compartment 1 side up and the engine room 3 side down. A steering wheel 8 is attached to the end of the steering shaft 7 (the end on the vehicle compartment 1 side).

  Inside the cockpit module 6, an intermediate portion of the steering shaft 7 is fixed to an intermediate portion (an intermediate portion in the vehicle width direction) of the steering member 5 via a bracket 9. The bracket 9 includes a bracket 9A on the steering shaft side and a bracket 9B on the steering member side. The brackets 9A and 9B are fastened to each other by bolts 10 and nuts 11. In FIG. 1, 4B is a front window.

  Further, in the cockpit module 6, an intermediate part (an intermediate part in the vehicle width direction) of the steering member 5 is fixed to the dash panel 4 via a post bracket 12. As shown in FIG. 2, the post bracket 12 has a post bracket upper 13 and a post bracket lower 14, and the post brackets 13 and 14 are connected to each other by bolts 15 and nuts 16 (see FIG. 4).

  The post bracket upper 13 is bent into an L shape and has an upper main body portion 19 having a vertical wall 17 and a horizontal wall (bottom wall) 18, and a flat plate portion 20 provided below the upper main body portion 19 and arranged in parallel to the horizontal wall 18. And a connecting portion 21 that is bent into a U-shape and connects the horizontal wall 18 and the flat plate portion 20. In addition, the upper main body part 19, the flat plate part 20, and the connection part 21 are integrally formed.

  The vertical wall 17 of the upper main body 19 has both sides in the vehicle width direction bent rearward in an L shape, and side walls 17A are provided on both sides of the vertical wall 17, respectively. By providing these side walls 17A, the bending strength of the vertical walls 17 is increased. Further, the lateral wall 18 of the upper main body portion 19 is bent in an L shape at both sides in the vehicle width direction, and side walls 18A are provided on both sides of the lateral wall 18, respectively. By providing these side walls 18A, the bending strength of the lateral walls 18 is increased. Since the post bracket upper 13 is provided with side walls 18A at both side ends in the portion of the horizontal wall 18, the cross-sectional shape cut by a plane perpendicular to the longitudinal direction of the vehicle body is U-shaped with the open part facing up. Is made.

  A bolt hole 17 </ b> B is formed at the center of the vertical wall 17 of the upper main body 19. Further, a long hole 18 </ b> B that is long in the longitudinal direction of the vehicle body is formed in the central portion of the horizontal wall 18 of the upper main body 19. The long hole 18B is molded by burring, and a falling portion 18C is formed at the inner peripheral edge of the long hole 18B (see FIGS. 4 and 5).

  Although not shown in FIG. 2, the flat plate portion 20 below the upper main body portion 19 is provided with a long hole 20 </ b> A in the center thereof (see FIGS. 4 and 5). The long hole 20A is formed in substantially the same shape as the long hole 18B.

  The connecting portion 21 has a width W1 in the vehicle width direction that is smaller than the width W2 of the upper main body portion 19 and the width W3 of the flat plate portion 20, and is easily bent into a U shape.

  On the other hand, the post bracket lower 14 is bent such that the lower main body portion 22 and the front end (front end of the vehicle body side) of the lower main body portion 22 are bent in a U shape when viewed from the side (that is, when viewed in the vehicle width direction). Part 23. Note that the lower main body portion 22 and the bent portion 23 are integrally formed.

  The lower main body 22 has a lateral wall (bottom wall) 24, both side portions of the lateral wall 24 are bent upward in an L shape, and side walls 24 </ b> A are provided on both sides of the lateral wall 24. By providing these side walls 24A, the bending strength of the lateral walls 24 is increased. Since the post bracket lower 14 is provided with side walls 24A at both side ends of the lateral wall 24, the cross-sectional shape cut by a plane perpendicular to the longitudinal direction of the vehicle body forms a U-shape with the opening portion facing upward. Yes. Further, the rear portion (vehicle body rear portion side) 24B of each side wall 24A is cut into an arc shape, and these rear portions 24B are fixed to the outer peripheral surface of the steering member 5 by welding or the like.

  The bent portion 23 has an upper flat plate portion 25 folded back toward the rear of the vehicle body, and a cutout hole 25B is formed in the flat plate portion 25 from the rear edge 25A toward the front of the vehicle body.

  FIG. 3 is a plan view of the post bracket upper 13. In FIG. 3, the broken line indicates the flat plate portion 25 of the bent portion 23 of the post bracket lower 14. As shown in FIG. 3, slits 26 are formed in the lateral wall 18 of the upper main body 19 on the left and right sides of the elongated hole 18 </ b> B (left and right sides along the vehicle width direction). These slits 26 are formed in the vehicle front-rear direction. Small holes 27 are provided at the front and rear ends of the slit 26 to prevent stress concentration.

  4 shows the post bracket 12 attached to the dash panel 4 with bolts 15 and nuts 16, and is a cross-sectional view taken along the line SA-SA in FIG. FIG. 5 is a cross-sectional view taken along line SB-SB in FIG. In FIG. 3, the dash panel 4 is omitted.

  As shown in FIGS. 4 and 5, a long hole 20 </ b> A is formed in the center of the flat plate portion 20 of the post bracket upper 13. The elongated hole 20A has the same size and the same shape as the elongated hole 18B formed in the upper main body portion 19, and is disposed to face the elongated hole 18B. However, the falling edge 18C in the long hole 18B is not provided at the inner peripheral edge of the long hole 20A.

  Further, on the bottom surface of the lateral wall 18 of the upper main body portion 19 of the post bracket upper 13, pins 28 are provided downward at two locations along the vehicle width direction. These pins 28 are disposed behind the elongated holes 18B (rearward in the longitudinal direction of the vehicle body), and the distance between the pins 18 and 18 is set to be slightly smaller than the width of the notch holes in the post bracket lower. .

  A flat plate-like portion 25 of the bent portion 23 of the post bracket lower 14 is inserted between the upper main body portion 19 and the flat plate portion 20. At this time, the falling portion 18 </ b> C of the upper main body portion 19 enters the notch hole 25 </ b> B of the flat plate-like portion 25. A bolt 15 is inserted into the elongated hole 18B, the falling portion 18C of the upper main body 19 and the elongated hole 20A of the flat plate portion 20, and a nut 16 is screwed into the bolt 15. Then, the bolt 15 and the nut 16 are tightened, and the post bracket upper 13 and the post bracket lower 14 are connected to each other. Reference numerals 15A and 16A are washers.

  As shown in FIG. 4, the dash panel 4 is provided with an attachment hole 4A, and a post bracket upper 13 is attached to the attachment hole 4A. That is, a bolt 29 is inserted into the bolt hole 17B formed in the upper body 19 of the post bracket upper 13 and the mounting hole 4A of the dash panel 4, and a nut 30 is screwed into the bolt 29. The post bracket upper 13 is fixed to the dash panel 4 by tightening the bolt 29 and the nut 30. 29A and 30A are washers.

  FIG. 6 is a cross-sectional view taken along the line SC-SC in FIG. As shown in FIG. 6, the lateral wall 18 of the upper main body portion 19 of the post bracket upper 13 is formed with a convex portion 31 projecting downward outward in the vehicle width direction of the slit 26 (see FIG. 3). The portion 31 presses the upper surface of the plate-like portion 25 of the post bracket lower 14. This prevents the post bracket upper 13 and the post bracket lower 14 from being displaced in the longitudinal direction of the vehicle body due to vibration of the vehicle body during normal traveling.

  7 and 8 are also cross-sectional views taken along the line SC-SC in FIG. 3, and are modifications of FIG. In FIG. 7, an L-shaped cut 18C is formed in the horizontal wall 18 of the upper main body portion 19 when viewed from above, and a portion 32 where the cut 18C is formed is bent obliquely downward with the vehicle body rear side as a base point. The bent portion distal end is in contact with the upper surface of the flat portion 25 of the post bracket lower 14 and presses the flat portion 25. Also in this case, the same effect as in the case of FIG. 6 can be obtained.

  In FIG. 8, convex portions 33 projecting downward are formed at two locations along the longitudinal direction of the vehicle body on the horizontal wall 18 of the upper main body portion 19, and these convex portions 33 are flat plate portions of the post bracket lower 14. 25 The upper surface is pressed. Also in this case, the same effect as in the case of FIG. 6 can be obtained.

  Next, a procedure for attaching the cockpit module 6 (see FIG. 1) to the dash panel 4 will be described with reference to FIG. At the supplier, the post bracket lower 14 is attached to the steering member 5 in the cockpit module 6, and the post bracket upper 13 and the post bracket lower 14 are temporarily tightened with bolts 15 and nuts 16 (see FIG. 4 or FIG. 5). The Further, a bolt 29 is passed through the bolt hole 17B (see FIG. 4) of the post bracket upper 13, and a nut 30 (see FIG. 4) is screwed to the end thereof. In this state, the cockpit module 6 is supplied to the automobile manufacturer.

  In an automobile manufacturer, when the cockpit module 6 is attached to the dash panel 4, as shown in FIG. 9, the post bracket upper 13 is moved in the direction of the arrow A (the vehicle longitudinal direction) according to the distance L between the steering member 5 and the dash panel. ) And adjust so that the vertical wall 17 of the post bracket upper 13 is in close contact with the dash panel 4. At this time, as shown in FIG. 3, the post 18 so that the falling portion 18C of the inner peripheral edge of the long hole 18B and the pin 28 are positioned in the cutout hole 25B formed in the flat plate-like portion 25 of the post bracket lower 14. The flat plate-like portion 25 of the bracket lower 14 is pushed between the horizontal wall 18 of the post bracket upper 13 and the flat plate portion 20.

  When the vertical wall 17 of the post bracket upper 13 is in close contact with the dash panel 4, the bolt 15 and the nut 16 are tightened to connect the post bracket upper 13 and the post bracket lower 14 to each other. Further, the post bracket upper 13 is attached to the dash panel 4 by tightening the bolt 29 and the nut 30. As a result, as shown in FIG. 10, the steering member 5, that is, the cockpit module 6 is attached to the dash panel 4.

  FIG. 11 shows a state of the post bracket upper 13 and the post bracket lower 14 at the time of a vehicle front collision. The post bracket upper 13 is formed with a long hole 18B and a long hole 20A (see FIG. 4), and the post bracket lower 14 is formed with a notch hole 25B (see FIG. 2). Since the post bracket upper 13 and the post bracket lower 14 are connected in a state of being inserted into the hole 20A and the notch hole 25B, the post bracket upper 13 and the post bracket lower 14 can slide relative to each other in the longitudinal direction of the vehicle body. Yes.

  For this reason, when the dash panel 4 is pushed in the direction of the arrow B by the impact force caused by the collision at the time of the frontal collision of the vehicle, the post bracket upper 13 easily moves in the direction of the arrow C (rear direction of the vehicle body). As a result, the impact force due to the collision can be sufficiently absorbed. When the impact force is large, the bolt 15 is removed, and the connection between the post bracket upper 13 and the post bracket lower 14 is released as shown in FIG. In this case, the impact force due to the collision can be absorbed more sufficiently.

  Further, according to the present embodiment, since the post bracket 12 is divided into the post bracket upper 13 and the post bracket lower 14, the total length of the post bracket 12 is adjusted to the distance L between the steering member 5 and the dash panel 4. This facilitates the assembly of the cockpit module 6 to the vehicle body.

  Further, since the steering member 5 is attached to the dash panel 4 via the post bracket 12, the rigidity of the steering member 5 can be sufficiently ensured.

  FIG. 12 shows a second embodiment. In this embodiment, a post bracket upper 40 and a post bracket lower 41 are provided. The post bracket upper 40 is attached to the dash panel 4 (see FIG. 1), and the post bracket lower 41 is fixed to the steering member 5. .

  The post bracket upper 40 is bent into an L shape and has a vertical wall 42 and a horizontal wall (bottom wall) 43. The vertical wall 42 is bent in an L shape on both sides in the vehicle width direction rearward, and side walls 42A are provided on both sides of the vertical wall 42, respectively. Further, the lateral wall 43 is bent in an L shape on both sides in the vehicle width direction, and side walls 43 </ b> A are provided on both sides of the lateral wall 43. Since the post bracket upper 40 is provided with side walls 43A at both side ends in the portion of the horizontal wall 43, the cross-sectional shape cut by a plane perpendicular to the longitudinal direction of the vehicle body has a U-shape with the open part facing upward. Is made.

  The vertical wall 42 is formed with a bolt hole 42B at the center thereof. In addition, a long hole 43B that is long in the longitudinal direction of the vehicle body is formed in the center portion of the horizontal wall 43.

  In this embodiment, beads 44 are formed on the side walls 43A on both sides of the lateral wall 43 along the vertical direction of the vehicle body. These beads 44 are formed toward the outer side in the vehicle width direction.

  On the other hand, the post bracket lower 41 has a lateral wall (bottom wall) 45, both side portions of the lateral wall 45 are bent upward in an L shape, and side walls 45A are provided on both sides of the lateral wall 45, respectively. Since the post bracket lower 41 is provided with side walls 45A at both side ends of the horizontal wall 45, the cross-sectional shape cut by a plane perpendicular to the longitudinal direction of the vehicle body forms a U-shape with the open part facing up. Yes.

  In addition, a long hole 45B that is long in the longitudinal direction of the vehicle body is formed in the center of the horizontal wall 45. Furthermore, the rear part (vehicle body rear part side) 45C of each side wall 45A is cut in an arc shape, and these rear parts 45C are fixed to the outer peripheral surface of the steering member 5 by welding or the like.

  In the post bracket upper 40 and the post bracket lower 41, bolts (not shown) are inserted into the elongated holes 43B and 45B formed respectively. A nut (not shown) is screwed into the end of the bolt, and the post bracket upper 40 and the post bracket lower 41 are connected to each other by tightening the bolt and the nut.

  According to the present embodiment, since the post bracket upper 40 and the post bracket lower 41 are connected to each other by the bolts inserted into the long holes 43B and 45B, the post bracket upper 40 is connected to the post bracket lower 41. On the other hand, it can slide in the longitudinal direction of the vehicle body. Therefore, when an impact force is applied to the dash panel 4 at the time of a frontal collision of the vehicle, the post bracket upper 40 easily moves to the rear side of the vehicle body, and sufficiently absorbs the impact force.

  Further, according to the present embodiment, since the beads 44 are formed on the side walls 43A on both sides of the lateral wall 43 of the post bracket upper 40, when a large impact force is applied to the dash panel 4, the post bracket upper 40 is moved to the bead 44. At this point, it bends in the direction of arrow D, so that the impact force caused by the collision can be absorbed more sufficiently.

  FIG. 13 shows a third embodiment. In the present embodiment, instead of forming the bead 44 on the side wall 43A as in the second embodiment, two through holes 43C are provided in the lateral wall 43.

  If such a through-hole 43C is formed, the portion of this through-hole 43C becomes a fragile portion, and when an impact is applied at the time of a vehicle front collision, the post bracket upper 40 bends in the direction of arrow E at the through-hole 43C, Thereby, the impact force due to the collision can be absorbed more sufficiently.

  The number of through holes 43C may be one, or three or more. Further, a thin portion may be formed on the horizontal wall 43 instead of the through hole 43C.

  Although the embodiments of the present invention have been described in detail with reference to the drawings, each of the above embodiments is only an example of the present invention, and the present invention is not limited only to the configuration of each of the above embodiments. . Needless to say, changes in design and the like within the scope of the present invention are included in the present invention.

1 is a schematic configuration diagram of a steering member mounting structure according to the present invention. FIG. 3 is a perspective view of a main part of the steering member mounting structure according to the first embodiment. It is a top view of a post bracket upper. It is sectional drawing along the SA-SA line of FIG. It is sectional drawing along the SB-SB line | wire of FIG. It is sectional drawing along the SC-SC line of FIG. It is sectional drawing which shows the modification of FIG. It is sectional drawing which shows the other modification of FIG. It is a figure explaining the procedure at the time of attaching a cockpit module to a dash panel. It is a figure which shows the state which attached the cockpit module to the dash panel. It is a figure which shows a mode that the inside of a cockpit module deform | transforms at the time of a vehicle front collision. FIG. 7 is a perspective view of a main part of a steering member mounting structure according to a second embodiment. FIG. 10 is a perspective view of a main part of a steering member mounting structure according to a third embodiment.

Explanation of symbols

4 Dash Panel 5 Steering Member 6 Cockpit Module 9 Bracket 12 Post Bracket 13 Post Bracket Upper 14 Post Bracket Lower 15 Bolt 16 Nut 17 Vertical Wall 17B Bolt Hole 18 Horizontal Wall (Bottom Wall)
18A side wall 18B, 20A long hole 24 side wall (bottom wall)
24A Side wall 25B Notch hole 40 Post bracket upper 41 Post bracket lower 43 Side wall (bottom wall)
43A side wall 43B oblong hole 43C through hole 44 bead 45 side wall (bottom wall)
45A side wall

Claims (6)

A steering member mounting structure in which a steering member incorporated in a cockpit module is attached to a dash panel via a post bracket,
The post bracket is divided into two parts, one post bracket is attached to the dash panel, the other post bracket is attached to the steering member, and both the post brackets are fastened together so as to be slidable in the longitudinal direction of the vehicle body. Steering member mounting structure. Both post brackets are each formed with a long hole and a notch along the longitudinal direction of the vehicle body,
2. The post brackets are slidably fastened to each other by inserting a bolt into which a nut is screwed into the elongated hole and the notch hole, and tightening the bolt and the nut. Steering member mounting structure as described. Both post brackets have a U-shaped cross-section cut by a plane perpendicular to the longitudinal direction of the vehicle body, with the open part facing up,
The oblong hole is formed in the bottom wall of the U-shaped section of the one post bracket, and the bottom wall of the other post bracket is bent in a U shape in a side view, and the end of the bent portion is The steering member mounting structure according to claim 2, wherein a notch hole is formed. Both post brackets are each formed with a long hole along the longitudinal direction of the vehicle body,
2. The steering according to claim 1, wherein the post brackets are slidably fastened to each other by inserting bolts into which the nuts are screwed into the respective elongated holes and tightening the bolts and the nuts. Member mounting structure. Both post brackets have a U-shaped cross-section cut by a plane perpendicular to the longitudinal direction of the vehicle body, with the open part facing up,
The oblong holes are formed in the bottom walls of the U-shaped sections of both post brackets, and the one post bracket has a bead protruding outward in the vehicle width direction on the side wall of the U-shaped section. The steering member mounting structure according to claim 4, wherein the steering member mounting structure is formed. Both post brackets have a U-shaped cross-section cut by a plane perpendicular to the longitudinal direction of the vehicle body, with the open part facing up,
The oblong holes are formed in the bottom walls of the U-shaped sections of both post brackets, and the through holes or thin portions are formed in the bottom wall of the U-shaped sections of the one post bracket. The steering member mounting structure according to claim 4.

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