WO2011162089A1 - 車体前部構造 - Google Patents
車体前部構造 Download PDFInfo
- Publication number
- WO2011162089A1 WO2011162089A1 PCT/JP2011/062912 JP2011062912W WO2011162089A1 WO 2011162089 A1 WO2011162089 A1 WO 2011162089A1 JP 2011062912 W JP2011062912 W JP 2011062912W WO 2011162089 A1 WO2011162089 A1 WO 2011162089A1
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- WIPO (PCT)
- Prior art keywords
- beads
- mounting surface
- master cylinder
- brake master
- bead
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/14—Dashboards as superstructure sub-units
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D25/00—Superstructure or monocoque structure sub-units; Parts or details thereof not otherwise provided for
- B62D25/08—Front or rear portions
- B62D25/14—Dashboards as superstructure sub-units
- B62D25/145—Dashboards as superstructure sub-units having a crossbeam incorporated therein
Definitions
- the present invention relates to a vehicle body front part structure.
- This application claims priority based on Japanese Patent Application No. 2010-143871 filed in Japan on June 24, 2010, the contents of which are incorporated herein by reference.
- the vehicle body includes a cabin (cabinet) in which an occupant gets on, an engine room that is disposed in front of the cabin and houses an engine, and a dashboard (dash panel) that partitions the engine room and the cabin. Is provided. Various components are attached to the dashboard. Accordingly, various techniques for increasing the support rigidity for supporting these components have been disclosed.
- a dashboard cross member (dash cross member) and a booster attachment reinforcement are joined to a dashboard (dash panel).
- the booster mounting reinforcement is a reinforcing plate for reinforcing the mounting portion of the brake booster.
- the center portion in the vehicle width direction of the dashboard cross member is joined to the front end portion of the tunnel portion extending from the lower center of the dashboard.
- the reinforcement for mounting the booster includes a rain main body and a reinforcing arm portion that extends from the rain main body inward in the vehicle width direction and is joined to the center portion in the vehicle width direction of the dash cross member. Yes (see, for example, Patent Document 1).
- the load input to the booster mounting reinforcement can be transmitted not only through the rain body but also through the reinforcing arm to the dashboard and dashboard cross member.
- the load can be dispersed efficiently.
- the present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a vehicle body front structure capable of reducing the size and weight of a reinforcing plate while ensuring sufficient support rigidity.
- a vehicle body front structure includes a brake master cylinder mounting surface formed in an arc shape toward a vehicle interior side, and an inclination direction that is inclined in the vertical direction and the vertical direction on the brake master cylinder mounting surface.
- a plurality of mounting surface beads formed along only the plurality of mounting surface beads, and a reinforcing plate joined to the plurality of mounting surface beads.
- the brake master cylinder mounting surface in an arc shape toward the vehicle interior side, it is possible to increase the rigidity with respect to the brake pedal force, which is an input load, as compared with the case where the brake master cylinder mounting surface is formed flat.
- the mounting surface beads only in the vertical direction and the inclination direction and not in the horizontal direction, it is possible to prevent the brake master cylinder mounting surface from being bent and deformed by the brake depression force. For this reason, the rigidity of the dashboard lower can be increased, and the size and weight of the reinforcing plate can be reduced.
- a bent portion that is bent and extended along the front-rear direction is formed on an upper edge of the dashboard lower, and a plurality of bent portion beads are formed in the bent portion, and at least one ridge line of the plurality of bent portion beads
- the ridge lines of at least one of the plurality of mounting surface beads may be continuous.
- a plurality of reinforcing plate beads may be formed on the reinforcing plate, and the ridge line of the reinforcing plate bead may overlap the ridge line of the mounting surface bead.
- the rigidity of the dashboard lower can be further increased by overlapping the beads with each other. Further, the input load can be transmitted to the vertical wall of the windshield support panel which is bonded to the bent portion and has high rigidity. For this reason, a load can be disperse
- the number of the bent part beads may be set to be larger than the number of the mounting surface beads.
- the extension length of the bent portion is set short, the length of the bent portion bead formed here is also shortened.
- the rigidity of the bent portion can be further increased by increasing the number of bent portion beads.
- the number of reinforcing plate beads may be set to be larger than the number of mounting surface beads.
- the length of the reinforcing plate bead formed here is also shortened.
- An upper and lower bead formed on the mounting surface bead along a vertical line passing through a hole formed in the brake master cylinder mounting surface, and formed along a straight line that intersects the upper and lower bead and passes through the hole.
- the upper and lower beads and the inclined beads configured as described above can increase the rigidity of the dashboard lower, and the reinforcing plate can be reduced in size and weight.
- the plurality of mounting surface beads may extend from the brake master cylinder mounting surface to a bent portion.
- the rigidity of the brake master cylinder mounting surface, the bent portion, and the connecting portion between the brake master cylinder mounting surface and the bent portion can be increased.
- the rigidity can be further increased.
- the support rigidity of the dashboard lower can be sufficiently increased, and the reinforcement plate can be reduced in size and weight.
- FIG. 7 is a cross-sectional view taken along line AA in FIG. 6. It is sectional drawing which follows the BB line of FIG.
- FIG. 4 is a cross-sectional view taken along the line CC in FIG. 3.
- FIG. 1 is a perspective view of a dashboard lower as seen from the cabin side.
- FIG. 2 is a plan view of the dashboard lower as seen from the cabin side.
- FIG. 3 is a plan view of the dashboard lower as viewed from the engine room side.
- FIG. 4 is a perspective view of a joint portion between the dashboard lower and the wheel house portion as seen from the outside.
- the vehicle body front structure 1 includes front side frames 4a and 4b, front pillars 5a and 5b, upper members 6a and 6b, a dashboard lower 10, and a floor panel 9. ing.
- the front side frames 4 a and 4 b are disposed in front of the vehicle body front part structure 1 and constitute left and right frame parts of the engine room 2.
- the front pillars 5a and 5b are disposed behind the front side frames 4a and 4b and on the left and right outer sides, and extend in the vertical direction.
- the upper members 6a and 6b are disposed above the front side frames 4a and 4b, and the front ends (first ends) of the upper members 6a and 6b are joined to the front ends (first ends) of the front side frames 4a and 4b.
- the rear ends (second ends) of the upper members 6a and 6b are joined to the front pillars 5a and 5b.
- the dashboard lower 10 divides the engine room 2 and the cabin 3 disposed behind this, and is joined to the front side frames 4a and 4b, the front pillars 5a and 5b, and the upper members 6a and 6b.
- the floor panel 9 is joined to the lower edge of the dashboard lower 10.
- the dashboard lower 10 is formed by pressing a flat metal member.
- the dashboard lower 10 includes a vertical wall 11 extending in the vertical direction and an inclined wall 12 extending downward from the lower portion of the vertical wall 11 toward the rear, and wheel house portions 16a and 16b are provided on the left and right sides, respectively. Is provided.
- the wheel house portions 16a and 16b are bulged toward the cabin 3, and gussets 18a and 18b are provided on the wheel house portions 16a and 16b, respectively.
- the rear ends (second ends) of the front side frames 4a and 4b are joined by spot welding to the central ends of the gussets 18a and 18b in the vehicle width direction with the dashboard lower 10 interposed therebetween.
- front pillars 5a and 5b are joined to the outer ends of the gussets 18a and 18b in the vehicle width direction by spot welding, respectively.
- a bent portion 27 is formed at the upper edge of the vertical wall 11 of the dashboard lower 10 so as to bend and extend rearward.
- a plurality of beads 49 projecting upward and extending in the front-rear direction are formed in the bent portion 27 along the longitudinal direction of the bent portion 27.
- a tunnel portion 13 bulging upward is integrally formed at the center of the inclined wall 12 in the vehicle width direction.
- the left side of the tunnel portion 13 is a driver seat side step portion 14 and the right side is a passenger seat side step portion 15.
- a center frame 28 extending in the vertical direction is provided between the bent portion 27 of the vertical wall 11 and the tunnel portion 13.
- the center frame 28 is a reinforcing member for increasing the rigidity of the dashboard lower 10.
- a steering opening 20 that communicates the engine room 2 and the cabin 3 is formed at a boundary portion between the vertical wall 11 and the inclined wall 12 in the driver seat side step portion 14.
- the steering opening 20 is for inserting a steering shaft (not shown) or a universal joint connected to the steering shaft.
- a steering joint cover 21 that closes the steering opening 20 is attached to the steering opening 20 from the engine room 2 side.
- the steering joint cover 21 has a cup shape that bulges toward the engine room 2 side, and is formed with a joint insertion port 22 for inserting a steering shaft (not shown) and a universal joint.
- a dashboard cross member 23 straddling the left and right front side frames 4a and 4b is provided on the surface (first surface) on the engine room 2 side of the dashboard lower 10 at a position corresponding to the steering joint cover 21. Yes.
- the dashboard cross member 23 is for increasing the rigidity of the dashboard lower 10 and dispersing the front impact load, and has a substantially hat-shaped cross section. And the opening side of the dashboard cross member 23 is joined by the spot welding toward the dashboard lower 10 side, and the closed cross-section structure part is formed.
- the dashboard cross member 23 is divided into left and right parts with the steering joint cover 21 interposed therebetween. That is, the dashboard cross member 23 includes a left cross member 23a and a right cross member 23b. One end (first end) of each of the left and right cross members 23a, 23b is joined to the steering joint cover 21 by spot welding. That is, the left and right cross members 23 a and 23 b are connected via the steering joint cover 21. On the other hand, the other ends (second ends) of the left and right cross members 23a and 23b are joined to the corresponding left and right front side frames 4a and 4b by spot welding.
- a recess 31 is formed in a portion corresponding to the right cross member 23 b so as to be elongated in the left-right direction.
- the recess 31 is formed so as to bulge out from the dashboard lower 10 toward the engine room 2 side.
- a damping material fixing panel 26 is provided on the upper surface on the right side of the tunnel portion 13 on the surface (second surface) of the vertical wall 11 on the cabin 3 side.
- the damping material fixing panel 26 is for fixing a Mel sheet (not shown) attached as a damping material of the dashboard lower 10.
- the damping material fixing panel 26 is formed with unevenness formed by pressing a flat metal member or the like.
- an accelerator pedal bracket 32 for attaching an accelerator pedal (not shown) is provided on the upper right side of the steering opening 20.
- a brake master cylinder mounting surface 50 for mounting a brake master cylinder is formed on the vertical wall 11 on the upper left side of the steering opening 20.
- the brake master cylinder transmits a brake depression force input via a brake pedal (not shown) as a hydraulic pressure to a brake system (not shown), and is a known hydraulic booster (a booster) not shown. It has.
- the brake master cylinder is attached to the dashboard lower 10 such that the brake master cylinder attachment surface 50 and a master cylinder stiffener 25 described later are sandwiched between the brake pedal and the brake pedal.
- FIG. 5 is a perspective view of the brake master cylinder mounting surface as viewed from the engine room side. As shown in FIG. 5, the brake master cylinder mounting surface 50 is formed in an arc shape toward the cabin 3 side (vehicle interior side), that is, slightly bulges toward the cabin 3 side.
- a substantially circular mounting seat surface 51 is formed so as to protrude toward the engine room 2 in plan view.
- a mounting hole 33 through which the brake master cylinder is inserted is formed in the central portion of the mounting seat surface 51.
- the brake master cylinder mounting surface 50 is formed in an arc shape so that the apex is located at the center of the mounting hole 33.
- the brake master cylinder mounting surface 50 is formed with an upper and lower bead 52 that protrudes toward the engine room 2 on a vertical line passing through the mounting hole 33.
- the upper and lower beads 52 are formed vertically with the mounting seat surface 51 interposed therebetween.
- a first inclined bead 53 and a second inclined bead 54 that protrude toward the engine room 2 are formed on the brake master cylinder mounting surface 50.
- the first inclined bead 53 and the second inclined bead 54 are formed on two straight lines that intersect with the upper and lower beads 52 and pass through the attachment hole 33.
- the first inclined bead 53 is formed up and down across the mounting seat surface 51.
- the second inclined bead 54 is formed only on the upper portion of the mounting seat surface 51.
- the mounting seat surface 51 and the beads 52, 53, 54 are formed so as to be flush with each other.
- the upper and lower beads 52, the first inclined beads 53, and the second inclined beads 54 formed on the upper portion of the mounting seat surface 51 respectively extend from the mounting seat surface 51 to the bent portion 27 of the dashboard lower 10. ing.
- the number of beads 52, 53, 54 formed on the brake master cylinder mounting surface 50 is three, that is, the upper and lower beads 52, the first inclined beads 53, and the second inclined beads 54. Accordingly, the number of beads 49 formed in the bent portion 27 of the dashboard lower 10 is set to be larger than the number of these beads 52, 53, 54 formed.
- the ridge line 49a of the bead 49 of the bent portion 27, the ridge line 52a of the upper and lower beads 52, the ridge line 53a of the first inclined bead 53, and the ridge line 54a of the second inclined bead 54 are continuous with each other.
- a master cylinder stiffener 25 is attached from the cabin 3 side to the brake master cylinder attachment surface 50 thus configured.
- FIG. 6 is a plan view showing a state in which the master cylinder stiffener is attached to the brake master cylinder attachment surface.
- FIG. 7 is a cross-sectional view taken along line AA in FIG.
- FIG. 8 is a sectional view taken along line BB in FIG.
- FIG. 9 is a cross-sectional view taken along the line CC of FIG.
- the master cylinder stiffener 25 is a reinforcing plate that increases support rigidity for attaching a brake master cylinder (not shown) to the dashboard lower 10, and is formed by pressing a flat metal member or the like. It is formed by applying.
- the master cylinder stiffener 25 is formed so as to straddle the beads 52, 53, 54 formed on the brake master cylinder mounting surface 50, and a flat seat surface 61 is formed at the center. ing.
- a cylinder insertion hole 62 that is concentric with the mounting hole 33 of the brake master cylinder mounting surface 50 is formed in the seat surface 61.
- the brake master cylinder is inserted into the cylinder insertion hole 62.
- the seat surface 61 is provided with brackets 66 and 66 for fixing a brake master cylinder (not shown) on both the left and right sides of the cylinder insertion hole 62.
- two upper beads 63, 63 projecting in the vertical direction and toward the cabin 3 side are formed at the upper part of the seat surface 61, and at the lower part of the seat surface 61 in the vertical direction.
- Two lower beads 64 and 64 projecting toward the cabin 3 side are formed.
- These two upper beads 63, 63 are formed such that ridge lines 63 a, 63 a located inside each other overlap with ridge lines 52 a of the upper and lower beads 52 formed on the brake master cylinder mounting surface 50.
- the two lower beads 64 and 64 are also formed such that the ridge lines 64 a and 64 a positioned inside each other overlap the ridge line 52 a of the upper and lower beads 52.
- a plurality of small beads 65 are formed on the outer peripheral edge of the master cylinder stiffener 25 so as to protrude toward the brake master cylinder mounting surface 50 side.
- the ridge lines 65a of the small beads 65 formed at positions corresponding to the inclined beads 53 and 54 formed on the brake master cylinder mounting surface 50 are ridge lines 53a and 54a of the inclined beads 53 and 54, respectively. It is formed to overlap.
- the total of the beads 63, 64, 65 formed on the master cylinder stiffener 25 is larger than the total of the beads 52, 53, 54 formed on the brake master cylinder mounting surface 50. Is set. Thereby, the rigidity of the master cylinder stiffener 25 is increased.
- the brake master cylinder mounting surface 50 is formed in an arc shape toward the cabin 3 so that the apex is located at the center of the mounting hole 33. Accordingly, the master cylinder stiffener 25 is in a state where the periphery of the cylinder insertion hole 62 is in contact with the brake master cylinder mounting surface 50. On the other hand, the gap with the brake master cylinder mounting surface 50 gradually increases from the seat surface 61 toward the outer peripheral edge.
- the protruding height of the plurality of small beads 65 is set to a height that allows contact with the brake master cylinder mounting surface 50 in a state where the master cylinder stiffener 25 is set on the brake master cylinder mounting surface 50. Then, the master cylinder stiffener 25 is fixed to the brake master cylinder mounting surface 50 by spot welding the small beads 65. That is, the small bead 65 has a function of increasing the rigidity of the master cylinder stiffener 25 and also has a function as a welding surface.
- the bent portion 27 of the dashboard lower 10 is joined to the dashboard upper assembly 40 by spot welding.
- the dashboard upper assembly 40 includes a lower panel 40a and an upper panel 40b formed by pressing a flat metal member.
- the lower panel 40a and the upper panel 40b are superposed on each other, and the lower panel 40a and the upper panel 40b form a closed cross-sectional structure.
- the flange part 41 is formed in the periphery of each panel 40a, 40b.
- the dashboard upper assembly 40 is formed by spot welding by overlapping the flange portions 41.
- the bent portion 27 of the dashboard lower 10 is joined to the flange portion 41 by spot welding.
- the bent portion 27 of the dashboard lower 10 is connected to the windshield support panel 42 with the dashboard upper assembly 40 interposed therebetween.
- the front glass support panel 42 is formed by pressing a flat metal member or the like.
- the windshield support panel 42 includes a vertical wall 43 formed on the same plane as the vertical wall 11 of the dashboard lower 10, and an extending portion 44 that is bent and extended forward from the upper edge of the vertical wall 43. Have.
- a flange portion 45 that bends and extends rearward is formed at the lower edge of the vertical wall 43, and the bent portion 27 of the dashboard lower 10 is spotted on the flange portion 45 with the dashboard upper assembly 40 interposed therebetween. They are joined by welding.
- the bent part 27 has a role as a joint part between the dashboard upper assembly 40, the windshield support panel 42, and the dashboard lower 10, and its extension length is set to be short. .
- the brake master cylinder mounting surface 50 of the dashboard lower 10 is formed in an arc shape toward the cabin 3, so that the brake master cylinder mounting surface 50 is formed flat.
- the rigidity against the brake pedal force can be increased.
- the brake master cylinder mounting surface 50 is formed with the upper and lower beads 52 extending in the vertical direction, the first inclined beads 53 and the second inclined beads 54 extending obliquely, and no beads are provided in the left and right directions. .
- the rigidity of the dashboard lower 10 can be increased efficiently, and the brake master cylinder mounting surface 50 can be prevented from being bent up and down by the brake depression force.
- the master cylinder stiffener 25 is mounted so as to straddle the beads 52, 53, and 54 of the brake master cylinder mounting surface 50 formed in this way, the master cylinder stiffener 25 can be reduced in size and weight. it can.
- a bent portion 27 that bends and extends rearward is formed on the upper edge of the vertical wall 11 that constitutes the dashboard lower 10, and a plurality of beads 49 are formed along the front-rear direction.
- the ridge lines 49a of these beads 49 and the ridge lines 52a, 53a, 54a of the beads 52, 53, 54 of the brake master cylinder mounting surface 50 are continuous (see FIG. 5). Therefore, the rigidity of the bent portion 27, the brake master cylinder mounting surface 50, and the connecting portion between the bent portion 27 and the brake master cylinder mounting surface 50 can be further increased. As a result, the rigidity of the dashboard lower 10 can be further increased.
- the beads 63, 64, 65 formed on the master cylinder stiffener 25 have ridge lines 52 a of the beads 52, 53, 54 formed by the ridge lines 63 a, 64 a, 65 a on the brake master cylinder mounting surface 50. , 53a and 54a. In this manner, the rigidity of the dashboard lower 10 can be further increased by overlapping the beads 52 to 65a with each other.
- the master cylinder stiffener 25 and the brake master cylinder mounting surface 50 are reliably in contact with each other, so that the brake pedal force is applied to the brake master cylinder mounting surface 50 via the master cylinder stiffener 25. Can communicate.
- a bent portion 27 is formed above the brake master cylinder mounting surface 50, and a windshield support panel 42 is joined thereto. That is, the brake pedal force can be transmitted to the vertical wall 43 of the windshield support panel 42 having high rigidity. For this reason, it becomes possible to disperse brake pedaling force efficiently.
- the number of beads 49 formed on the bent portion 27 of the dashboard lower 10 is set to be larger than the number of beads 52, 53, 54 formed on the brake master cylinder mounting surface 50.
- the extension length of the bent portion 27 is set to be short, the length of each bead 49 is also shortened.
- the rigidity of the bent portion 27 can be further increased by increasing the number of formed beads 49.
- the total number of beads 63, 64, 65 formed on the master cylinder stiffener 25 is larger than the total number of beads 52, 53, 54 formed on the brake master cylinder mounting surface 50. It is set to increase.
- the master cylinder stiffener 25 is downsized by increasing the rigidity of the brake master cylinder mounting surface 50, the length of each bead 52, 53, 54 formed here is shortened.
- the rigidity of the master cylinder stiffener 25 can be increased by increasing the number of formed beads 52, 53, 54.
- the present invention is not limited to the above-described embodiment, and includes various modifications made to the above-described embodiment without departing from the spirit of the present invention.
- the dashboard upper assembly 40 to which the bent portion 27 of the dashboard lower 10 is connected is formed by superposing the lower panel 40a and the upper panel 40b.
- the present invention is not limited to this, and a dashboard upper composed of only one flat metal member may be used in place of the dashboard upper assembly 40.
- the present invention is not limited to this, and conventionally known methods such as TIG (tungsten inert gas) welding, MIG (metal inert gas) welding, arc welding such as plasma welding, laser welding, and electron beam welding. Metal welding methods can be employed as appropriate.
- TIG tungsten inert gas
- MIG metal inert gas
- arc welding such as plasma welding, laser welding, and electron beam welding.
- Metal welding methods can be employed as appropriate.
- the ridge line 49a of the bead 49 of the bent portion 27 formed in the dashboard lower 10 and the ridge lines 52a, 53a, 54a of the beads 52, 53, 54 of the brake master cylinder mounting surface 50 The case where is continuous has been described. However, the present invention is not limited to this, and at least one bead 52 (53, 54) of the beads 52, 53, 54 of the brake master cylinder mounting surface 50 and the ridge line 49a of the bead 49 of the bent portion 27 are included. It only needs to be continuous. Even in such a case, the rigidity of the bent portion 27, the brake master cylinder mounting surface 50, and the connecting portion between the bent portion 27 and the brake master cylinder mounting surface 50 can be increased as compared with the conventional case.
- the support rigidity of the dashboard lower can be sufficiently increased, and the reinforcement plate can be reduced in size and weight.
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- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
- Transmission Of Braking Force In Braking Systems (AREA)
Abstract
Description
本願は、2010年6月24日に、日本に出願された特願2010-143871号に基づき優先権を主張し、その内容をここに援用する。
このうち、ダッシュボードクロスメンバの車幅方向中央部を、ダッシュボードの下部中央から延出するトンネル部の前端部に接合しているものがある。また、ブースタ取付用レインフォースメントを、レイン本体と、前記レイン本体から車幅方向内側に延出してダッシュクロスメンバの車幅方向中央部に接合される補強アーム部とにより構成しているものがある(例えば、特許文献1参照)。
本願発明の一態様に係る車体前部構造は、車室内側に向かって弧状に形成されたブレーキマスタシリンダ取付面と、前記ブレーキマスタシリンダ取付面に、上下方向と前記上下方向に傾斜する傾斜方向のみに沿って形成された複数の取付面ビードと、前記複数の取付面ビードに接合する補強板と、を備える。
次に、本発明の実施形態を図面に基づいて説明する。なお、以下の説明において、車両の進行方向前方を単に前方、進行方向後方を単に後方、車幅方向右方を単に右方、車幅方向左方を単に左方、重力方向上方を単に上方、重力方向下方を単に下方と表現して説明する場合がある。
図1は、ダッシュボードロアをキャビン側からみた斜視図である。図2は、ダッシュボードロアをキャビン側からみた平面図である。図3は、ダッシュボードロアをエンジンルーム側からみた平面図である。図4は、ダッシュボードロアとホイールハウス部との接合部分を外側からみた斜視図である。
各ガセット18a,18bの車幅方向中央側端部には、ダッシュボードロア10を挟んで各フロントサイドフレーム4a,4bの後端(第2端)がスポット溶接により接合されている。一方、各ガセット18a,18bの車幅方向外側端部には、それぞれフロントピラー5a,5bがスポット溶接により接合されている。
一方、傾斜壁12の車幅方向中央には、上方に向かって膨出するトンネル部13が一体形成されている。このトンネル部13を挟んで左側を運転席側ステップ部14とし、右側を助手席側ステップ部15としている。
ステアリングジョイントカバー21は、エンジンルーム2側に向かって膨出形成されたカップ状のものであって、不図示のステアリングシャフトやユニバーサルジョイントを挿通するためのジョイント挿入口22が形成されている。
そして、それぞれ左右のクロスメンバ23a,23bの一端(第1端)がステアリングジョイントカバー21にスポット溶接により接合されている。すなわち、左右のクロスメンバ23a,23bは、ステアリングジョイントカバー21を介して連結した状態になっている。一方、それぞれ左右のクロスメンバ23a,23bの他端(第2端)がそれぞれ対応する左右のフロントサイドフレーム4a,4bにスポット溶接により接合されている。
さらに、縦壁11のキャビン3側の面(第2面)には、ステアリング用開口部20よりも右上側に、不図示のアクセルペダルを取り付けるためのアクセルペダルブラケット32が設けられている。
ここで、ブレーキマスタシリンダは、不図示のブレーキペダルを介して入力されるブレーキ踏力を油圧としてブレーキ系統(不図示)に伝達するものであって、公知の不図示の油圧ブースタ(倍力装置)を備えている。そして、ブレーキマスタシリンダとのブレーキペダルとの間に、ブレーキマスタシリンダ取付面50と、後述のマスタシリンダスチフナ25とを挟み込むようにして、ブレーキマスタシリンダがダッシュボードロア10に取り付けられる。
図5は、ブレーキマスタシリンダ取付面をエンジンルーム側からみた斜視図である。
図5に示すように、ブレーキマスタシリンダ取付面50は、キャビン3側(車室内側)に向かって弧状に、つまり、キャビン3側に向かって僅かに膨出するように形成されている。
さらに、ブレーキマスタシリンダ取付面50には、それぞれエンジンルーム2側に向かって突出する第1傾斜ビード53、および第2傾斜ビード54が形成されている。第1傾斜ビード53および第2傾斜ビード54は、上下ビード52と交差し、かつ取付孔33を通る2つの直線上に形成されている。
また、取付座面51の上部に形成されている上下ビード52、第1傾斜ビード53、および第2傾斜ビード54は、それぞれ取付座面51からダッシュボードロア10の屈曲部27に至るまで延出している。
図6は、ブレーキマスタシリンダ取付面にマスタシリンダスチフナを取り付けた状態を示す平面図である。図7は、図6のA-A線に沿う断面図である。図8は、図6のB-B線に沿う断面図である。図9は、図3のC-C線に沿う断面図である。
図6~図9に示すように、マスタシリンダスチフナ25は、不図示のブレーキマスタシリンダをダッシュボードロア10に取り付けるための支持剛性を高める補強板であって、平板状の金属部材にプレス加工等を施すことにより形成される。
また、座面61には、シリンダ挿通孔62を挟んで左右両側に、不図示のブレーキマスタシリンダを固定するためのブラケット66,66が設けられている。
これら2つの上ビード63,63は、互いに内側に位置している稜線63a,63aがブレーキマスタシリンダ取付面50に形成されている上下ビード52の稜線52aと重なるように形成されている。また、2つの下ビード64,64も上ビード63,63と同様に、互いに内側に位置している稜線64a,64aが上下ビード52の稜線52aと重なるように形成されている。
このように、屈曲部27は、ダッシュボードアッパアッシー40やフロントガラスサポートパネル42と、ダッシュボードロア10との接合部としての役割を有しており、その延出長さは短く設定されている。
したがって、上述の実施形態によれば、ダッシュボードロア10のブレーキマスタシリンダ取付面50を、キャビン3側に向かって弧状に形成しているので、ブレーキマスタシリンダ取付面50を平坦に形成する場合と比較して、ブレーキ踏力に対する剛性を高めることができる。しかも、ブレーキマスタシリンダ取付面50に、上下方向に延在する上下ビード52と、斜めに延在する第1傾斜ビード53および第2傾斜ビード54とを形成し、左右方向にビードを設けていない。このため、ダッシュボードロア10の剛性を効率よく高めることができると共に、ブレーキ踏力によってブレーキマスタシリンダ取付面50が上下に折れ変形してしまうことを抑制できる。
また、このように形成されたブレーキマスタシリンダ取付面50の各ビード52,53,54に跨るようにマスタシリンダスチフナ25を取り付けているので、マスタシリンダスチフナ25の小型化、軽量化を図ることができる。
このため、屈曲部27、ブレーキマスタシリンダ取付面50、およびこれら屈曲部27とブレーキマスタシリンダ取付面50との接続部分の剛性をさらに高めることができる。この結果、ダッシュボードロア10の剛性をさらに高めることができる。
例えば、上述の実施形態では、ダッシュボードロア10の屈曲部27が接続されるダッシュボードアッパアッシー40を、ロアパネル40aとアッパーパネル40bとを重ね合わせることにより形成した場合について説明した。しかしながら、これに限られるものではなく、1枚の平板状の金属部材のみで構成したダッシュボードアッパをダッシュボードアッパアッシー40に代わって用いてもよい。
10 ダッシュボードロア
25 マスタシリンダスチフナ(補強板)
27 屈曲部
49 ビード(屈曲部ビード)
50 ブレーキマスタシリンダ取付面
52 上下ビード(取付面ビード)
53 第1傾斜ビード(取付面ビード)
54 第2傾斜ビード(取付面ビード)
63 上ビード(補強板ビード)
64 下ビード(補強板ビード)
65 小ビード(補強板ビード)
49a,52a,53a,54a,63a,64a,65a 稜線
Claims (7)
- 車室内側に向かって弧状に形成されたブレーキマスタシリンダ取付面と、
前記ブレーキマスタシリンダ取付面に、上下方向と前記上下方向に傾斜する傾斜方向のみに沿って形成された複数の取付面ビードと、
前記複数の取付面ビードに接合する補強板と、
を備えることを特徴とする車体前部構造。 - ダッシュボードロアの上縁に、前後方向に沿って屈曲延出された屈曲部が形成され、
前記屈曲部に、複数の屈曲部ビードが形成され、
少なくとも1つの前記複数の屈曲部ビードの稜線と、少なくとも1つの前記複数の取付面ビードの稜線とが連続していることを特徴とする請求項1に記載の車体前部構造。 - 前記補強板に、複数の補強板ビードが形成され、
前記補強板ビードの稜線は、前記取付面ビードの稜線と重なることを特徴とする請求項1又は請求項2に記載の車体前部構造。 - 前記屈曲部ビードの個数は、前記取付面ビードの個数より多くなるように設定されていることを特徴とする請求項2又は請求項3に記載の車体前部構造。
- 前記補強板ビードの個数は、前記取付面ビードの個数よりも多くなるように設定されていることを特徴とする請求項3又は請求項4に記載の車体前部構造。
- 前記取付面ビードには、前記ブレーキマスタシリンダ取付面に形成された孔を通る上下方向の直線に沿って形成された上下ビードと、前記上下ビードと交差し、かつ前記孔を通る直線に沿って形成された傾斜ビードとが含まれることを特徴とする請求項1又は請求項2に記載の車体前部構造。
- 前記複数の取付面ビードは、前記ブレーキマスタシリンダ取付面から、屈曲部までに延出されていることを特徴とする請求項1又は請求項2に記載の車体前部構造。
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EP20110797975 EP2586682B1 (en) | 2010-06-24 | 2011-06-06 | Structure of front section of vehicle body |
CN201180029630.6A CN102971206B (zh) | 2010-06-24 | 2011-06-06 | 车身前部结构 |
US13/805,053 US8960759B2 (en) | 2010-06-24 | 2011-06-06 | Vehicle body front structure |
JP2012521397A JP5478724B2 (ja) | 2010-06-24 | 2011-06-06 | 車体前部構造 |
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US (1) | US8960759B2 (ja) |
EP (1) | EP2586682B1 (ja) |
JP (1) | JP5478724B2 (ja) |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2016177576A (ja) * | 2015-03-20 | 2016-10-06 | トヨタ自動車株式会社 | ペダル装置取付構造 |
JP2020179795A (ja) * | 2019-04-26 | 2020-11-05 | 株式会社Howa | 自動車の車体パネル用補強構造 |
Families Citing this family (4)
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JP6464585B2 (ja) * | 2014-07-11 | 2019-02-06 | スズキ株式会社 | 車体前部構造 |
WO2016148057A1 (ja) * | 2015-03-17 | 2016-09-22 | 本田技研工業株式会社 | 車体構造 |
JP6263223B2 (ja) * | 2016-04-22 | 2018-01-17 | 本田技研工業株式会社 | 車体前部構造 |
CN109204544B (zh) * | 2017-06-30 | 2020-11-06 | 比亚迪股份有限公司 | 车身结构和车辆 |
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- 2011-06-06 JP JP2012521397A patent/JP5478724B2/ja not_active Expired - Fee Related
- 2011-06-06 CN CN201180029630.6A patent/CN102971206B/zh not_active Expired - Fee Related
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JP2020179795A (ja) * | 2019-04-26 | 2020-11-05 | 株式会社Howa | 自動車の車体パネル用補強構造 |
JP7218238B2 (ja) | 2019-04-26 | 2023-02-06 | 株式会社Howa | 自動車の車体パネル用補強構造 |
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EP2586682A1 (en) | 2013-05-01 |
US8960759B2 (en) | 2015-02-24 |
US20130099527A1 (en) | 2013-04-25 |
CN102971206A (zh) | 2013-03-13 |
EP2586682A4 (en) | 2014-04-23 |
EP2586682B1 (en) | 2015-05-06 |
CN102971206B (zh) | 2015-07-29 |
JP5478724B2 (ja) | 2014-04-23 |
JPWO2011162089A1 (ja) | 2013-08-19 |
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