JP2006007981A - Front structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a front structure of a vehicle reinforcing connection between a dash panel and a pair of apron parts to enhance the rigidity of the apron parts and to sufficiently enhance the rigidity of a structure around the dash panel and suspension towers of the apron parts or the like. <P>SOLUTION: A pair of forward extending enlarged parts 21c are integrally provided at both end parts in the vehicle cross direction of the dash panel 10. The front ends of these enlarged parts 21c are connected to a pair of suspension towers 5 respectively. Each enlarged part 21c is joined to the apron part 13, and the enlarged part 21c and the apron part 13 form a closed cross-section structure. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a front structure of a vehicle, and in particular, a pair of enlarged portions provided at both ends of a dash panel in the vehicle width direction are connected to a pair of apron parts and to a pair of suspension towers. Concerning structure.

  Conventionally, in the front structure of a general vehicle (automobile), a dash panel is extended in the vehicle width direction at a part that partitions the engine room and the passenger compartment, and near the upper side of this dash panel (below the front end portion of the front window). The cowl member extends in the vehicle width direction. The dash panel and the cowl member are connected to each other, an air box extending in the vehicle width direction is formed along the cowl member, and the upper side of the air box is covered with a cowl grill. By the way, various structures have been put to practical use as the dash panel, the cowl member, and the peripheral structure.

  In the front structure of the vehicle of Patent Document 1, the lower end of the cowl upper plate and the apron upper reinforcement are joined to the upper surface of each horizontal end of the horizontal portion of the dash upper panel, and the cowl side is attached to the lower surface. The upper end of the panel and the apron loa reinforcement are joined. Further, the upper end of the cowl upper plate and the apron upper reinforcement are joined together, and the lower end of the apron reinforcement is joined to the outer surface of the cowl side panel to form a closed cross-sectional structure.

  In the vehicle front structure of Patent Document 2, a cowl top is joined to the upper end of the dash panel, and the cowl top has a closed cross-sectional structure in which an inner panel, an outer panel, and a lower panel are joined to each other. Each direction end is joined to the side upper panel, and the front end portion of the end is connected to the suspension tower strut house. In addition, the lower panel of the cowl top projects forward and upward, and the lower panel is formed in a concave cross section to constitute a so-called open cowl structure.

JP-A-1-215679 JP 2000-280935 A

  In the structure in which the dash upper panel and the suspension tower are not connected as in the vehicle body structure of the vehicle of Patent Document 1, the rigidity of the structure around the suspension tower such as the dash upper panel cannot be sufficiently increased. Therefore, when a large load is applied to the suspension tower during cornering or the like, deformation on the vehicle body side cannot be suppressed, and there is a possibility that the suspension performance of the vehicle can be fully exhibited and steering stability cannot be improved.

  Further, as in the vehicle body structure of the vehicle of Patent Document 2, the coupling strength between the cowl top and the side upper frame can be increased only by joining each end of the cowl top in the vehicle width direction to the side upper frame. Can not. Moreover, since the side upper frame is not constructed with a closed cross-sectional structure, the cowl top is connected to the suspension tower strut house, but the rigidity of the structure around the suspension tower such as the side upper frame and the cowl top is sufficiently increased. The same problem as described above arises.

  The object of the present invention is to strengthen the coupling between the dash panel and the pair of apron parts in the front structure of the vehicle, increase the rigidity of the apron part, and connect the dash panel to the pair of suspension towers. Furthermore, by combining the dash panel and the hinge pillar, the rigidity of the structure around the suspension tower such as the dash panel and the apron portion is sufficiently increased.

  The vehicle front structure according to claim 1 includes a dash panel that extends in a vehicle width direction at a portion that partitions the engine room and the vehicle compartment of the vehicle, and vehicle widths of the dash panel that are disposed at both left and right ends of the engine room. In the front structure of a vehicle having a pair of apron portions to which both ends in a direction are connected, the dash panel includes a dash lower panel and a dash upper panel joined to the dash lower panel, and the dash panel A pair of enlarged portions that extend forward are integrally provided at both ends in the vehicle width direction, and the front end portions of these enlarged portions are respectively connected to a pair of suspension towers, and each of the enlarged portions is connected to the apron portion. The enlarged cross section and the apron section are joined to form a closed cross-sectional structure.

  A dash panel extends in the vehicle width direction at the part that partitions the engine room and the vehicle compartment of the vehicle, and both ends of the dash panel in the vehicle width direction are paired with apron portions arranged at the left and right ends of the engine room. It is connected. The dash panel includes a dash lower panel and a dash upper panel joined to the dash lower panel. A pair of enlarged portions extending forward (extending) are provided integrally at both ends of the dash panel in the vehicle width direction, and the front end portions of these enlarged portions are respectively connected to a pair of suspension towers. The part is joined to the apron part. A closed cross-sectional structure is configured by the enlarged portion and the apron portion.

  In this way, each enlarged part of the dash panel is joined to the apron part, and this enlarged part and the apron part constitute a closed cross-sectional structure, so that the connection between the dash panel and the apron part can be strengthened, and the apron Since the front end of the pair of enlarged parts of the dash panel is connected to the suspension tower, the rigidity of the structure around the suspension tower such as the dash panel and the apron (vehicle body rigidity) can be increased. It can be raised enough.

In the invention of claim 1, the following configuration can be adopted.
The apron portion has an apron upper panel and an apron outer panel joined to the apron upper panel, and the enlarged portion is joined to a lower end of the apron upper panel and to an inner surface of the apron outer panel. ). A rear end portion of each of the enlarged portions is joined to a hinge pillar that supports the side door.

  The apron portion has an apron inner panel joined to an apron outer panel, and the enlarged portion is joined to the apron inner panel at the upper end, and the closed cross section structure of the apron portion is vertically divided by the enlarged portion. (Claim 4). In the vicinity of the suspension tower, the apron inner panel is extended upward and joined to the front end of the apron upper panel.

  A cowl front panel having a rear end connected to the dash panel and extending forward and extending in the vehicle width direction and having both ends in the vehicle width direction connected to a pair of enlarged portions, the cowl front panel and the dash upper And an air box extending in the vehicle width direction surrounded by a member including a panel, an air inlet for an air conditioner is formed in the dash upper panel, and extends in the vehicle width direction at a rear end portion of the cowl front panel. A vertical wall portion rising upward is integrally formed (Claim 6).

  According to the vehicle front structure of claim 1, in particular, a pair of enlarged portions extending forward are integrally provided at both ends of the dash panel in the vehicle width direction, and each enlarged portion is joined to the apron portion. Since the enlarged section and the apron part constitute a closed cross-sectional structure, the bond between the dash panel and the apron part is strengthened and the rigidity of the apron part is enhanced, and the front end part of the pair of enlarged parts is paired with a pair. Since the suspension tower is connected to the suspension tower, the rigidity of the structure around the suspension tower such as the dash panel and the apron can be sufficiently increased. That is, the rigidity of the vehicle body is increased, and even when a large load is applied to the suspension tower during cornering or the like, the deformation on the vehicle body side can be suppressed, and the suspension performance of the vehicle can be fully exerted to improve the steering stability. Moreover, since such a connection structure is achieved by providing a pair of enlarged portions integrally on the dash panel without providing a separate member, the strength of the connection structure is increased, which is advantageous in terms of manufacturing cost.

  According to the front structure of the vehicle of claim 2, the apron part has an apron upper panel and an apron outer panel joined to the apron upper panel, and an enlarged part is joined to the lower end of the apron upper panel and the apron outer panel Since it is joined to the inner surface, this apron upper panel, apron outer panel and enlarged part form a closed cross-section structure, which can securely strengthen the connection between the dash panel and the apron part and reliably increase the rigidity of the apron part .

  According to the vehicle front structure of claim 3, since the rear end of each enlarged portion is joined to the hinge pillar that supports the side door, the dash panel and the hinge pillar are securely coupled to increase the coupling strength. The rigidity of the structure around the suspension tower such as the apron and the apron can be reliably increased.

  According to the front structure of the vehicle of claim 4, the apron part has the apron inner panel joined to the apron outer panel, the enlarged part is joined to the apron inner panel at the upper end, and the apron part is closed by the enlarged part. Since the continuous closed cross-section structure is configured by dividing the cross section into upper and lower portions, the bond between the dash panel and the apron portion can be more reliably strengthened, and the rigidity (torsional rigidity) of the apron portion can be more reliably increased.

  According to the front structure of the vehicle of claim 5, the apron inner panel is extended upward and joined to the front end of the apron upper panel in the vicinity of the suspension tower, so that the apron upper panel extends to the vicinity of the suspension tower. As a result, the apron portion can have a closed cross-sectional structure almost entirely. When assembling to the vehicle, the cowl member, the cowl front panel, the dash upper panel, and the apron upper panel are combined to assemble the cowl component, and then the cowl component is integrally lowered into the engine compartment. It is possible to adopt a docking assembling method that is assembled to a dash lower panel, an apron outer panel, an apron inner panel, or the like that is preliminarily assembled to the vehicle.

  According to the front structure of the vehicle of claim 5, the rear end portion is connected to the dash panel, extends forward, extends in the vehicle width direction, and both ends in the vehicle width direction are connected to the pair of enlarged portions. A cowl front panel is provided, an air box extending in the vehicle width direction surrounded by a member including the cowl front panel and the dash upper panel is provided, and an air inlet for an air conditioner is formed in the dash upper panel. Air can be introduced directly from the air inlet to the passenger compartment, reducing the inflow resistance of the air, allowing the required amount of air to be smoothly introduced into the passenger compartment, and introducing air into the cowl member. Since the restriction on the shape of the cowl member can be relaxed without forming a mouth, the design includes the arrangement of the front window while increasing the rigidity and strength of the cowl member (vehicle body). It is possible to increase the degree of freedom of the emissions.

  Since the vertical wall portion extending in the vehicle width direction and rising upward is integrally formed at the rear end portion of the cowl front panel, a flange portion is formed on the front side portion of the vertical wall portion in the cowl front panel. Part, that is, the air inlet can be kept away from the part where water flows, and the vertical wall part can shield water splashes and the like generated mainly by the water flowing through the collar part. And the like can be prevented as much as possible from entering the passenger compartment side from the air inlet. Moreover, the vertical wall can be constructed very simply by bending the rear end of the cowl front panel without providing a separate member, which is advantageous in terms of production cost and can suppress an increase in assembly load. Furthermore, the vertical wall portion can increase the bending and torsional rigidity of the cowl front panel.

  The vehicle front structure according to the present invention includes a dash panel extending in the vehicle width direction at a portion that partitions the engine room and the vehicle compartment of the vehicle, and arranged at the left and right ends of the engine room and in the vehicle width direction of the dash panel. A pair of apron portions connected at both ends, and the dash panel includes a dash lower panel and a dash upper panel joined to the dash lower panel, and forwards at both ends of the dash panel in the vehicle width direction. A pair of enlarged portions that extend to each other are integrally provided, front ends of these enlarged portions are respectively connected to a pair of suspension towers, and each of the enlarged portions is joined to the apron portion. A closed cross-sectional structure is constituted by the portions.

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIGS. 1 to 12, the front structure of the vehicle 1 (automobile 1) includes a dash panel 10 that extends in the vehicle width direction at a site that partitions the engine room 2 and the vehicle compartment 3, and the dash panel 10. A cowl member 11 extending in the vehicle width direction in the vicinity of the upper side thereof, a cowl front panel 12 having a rear end connected to the dash panel 10 and projecting forward and extending in the vehicle width direction, A pair of apron portions 13 are provided at both left and right ends of the engine room 2 and connected to both ends of the dash panel 10 in the vehicle width direction. The dash panel 10, the cowl member 11, the cowl front panel 12, and the apron portion 13 are made of metal.

First, the dash panel 10 will be described.
As shown in FIGS. 1 to 5, 9, and 12, the dash panel 10 includes a dash lower panel 20 and a dash upper panel 21 joined (welded) to the dash lower panel 20. The dash lower panel 20 and the dash upper panel 21 are positioned substantially in the same plane, for example, in an inclined posture that moves forward as they move downward. The dash upper panel 21 is integrally provided with a substantially horizontal projecting portion 21a that projects forward by bending the lower end portion forward, and the upper end of the dash lower panel 20 is joined to the lower surface of the projecting portion 21a. The cowl front panel 12 is releasably connected to the overhanging portion 21a by a plurality of (for example, three) bolts (not shown) so that the cowl front panel 12 comes into contact with the upper surface of the overhanging portion 21a. Become.

  The dash upper panel 21 is formed with a substantially rectangular air inlet 21b for an air conditioner at one end portion in the vehicle width direction of the vertical portion, and the air conditioner 4 provided on the vehicle compartment 3 side is formed in the air inlet 21b. It is connected. Of the overhanging portion 21a of the dash upper panel 21, the portions other than the both ends in the vehicle width direction have a relatively narrow front-rear width, and project over the both ends in the vehicle width direction relatively larger forward than the other portions. A pair of enlarged portions 21c (extending) are integrally provided. The front end portions of the enlarged portions 21c are respectively connected to the upper end portions of the strut house 5a of the pair of suspension towers 5, and both end portions in the vehicle width direction of the cowl front panel 12 are connected to the enlarged portions 21c.

Next, the cowl member 11 will be described.
As shown in FIGS. 2 to 5, 9, and 12, the cowl member 11 includes a cowl lower panel 30 and a cowl upper panel 31 joined to the cowl lower panel 30. Both ends in the vehicle width direction are connected to the left and right front pillars 6, respectively. Regarding the closed cross-sectional shape of the cowl member 30, the rear half is formed in a flat shape, and the front half is formed in a larger cross-sectional shape than the latter half. The upper end of the dash upper panel 21 is joined to the rear end portion of the cowl member 30.

Next, the cowl front panel 12 will be described.
As shown in FIGS. 1 to 5, 9, and 12, the cowl front panel 12 includes a horizontal panel portion 12 a that is located in the rear half portion and a front panel that is located in the front half portion and obliquely forward from the front end of the horizontal panel portion 12 a. The inclined panel portion 12b is inclined, and a vertical wall portion 12c extending in the vehicle width direction and rising upward is integrally formed at the rear end portion of the cowl front panel 12 (that is, the rear side of the horizontal panel portion 12a). . The vertical wall portion 12c is formed over the entire width of the horizontal panel portion 12a in the vehicle width direction.

  The vertical wall portion 12c is located on the lower side of the cowl member 11, and is, for example, a portion having a length of about ¼ from the rear end of the entire front and rear length of the horizontal panel portion 12a and the overhang portion 21a of the dash upper panel 21. The vertical length of the vertical wall portion 12c is approximately 2/5 of the length between the overhanging portion 21a and the cowl member 11 at the position of the vertical wall portion 12c, for example. By providing the vertical wall portion 12c, the collar portion 40 through which water flows when raining or the like is formed in a portion surrounded by the vertical wall portion 12c, the horizontal panel portion 12a, and the lower end portion of the inclined panel portion 12b. Is formed.

  Further, an extended vertical wall 41 made of metal that extends upward and forward from the vertical wall 12c is provided in a portion of the vertical wall 12c that is located on the front side of the air introduction port 21b. The extended vertical wall portion 41 is formed of a separate member from the vertical wall portion 12c (the cowl front panel 12), and the lower end portion of the extended vertical wall portion 41 is connected to the vertical wall portion 12c by welding or the like.

  A plurality of (for example, three) bolt hole portions 42 are formed in the horizontal panel portion 12a, and a plurality of bolt hole portions 43 are formed at the front end portion of the overhang portion 21a of the dash upper panel 21 so as to correspond to the bolt hole portions 42. The cowl front panel 12 is connected to the overhanging portion 21a by causing the corresponding bolt hole portions 42, 43 to face each other and fastening with a plurality of bolts (not shown), and in this state, the horizontal panel portion 12a contacts the upper surface of the overhanging portion 21a. The horizontal panel portion 12a and the overhanging portion 21a are sealed with a sealing material (not shown).

  An air box 50 extending in the vehicle width direction surrounded by the cowl front panel 12, the dash upper panel 21, the cowl member 11 (the cowl lower panel 30), and the pair of apron portions 13 is provided, so-called open. A cowl structure is configured, and a cowl grill 51 made of synthetic resin is provided to cover the upper opening of the air box 50. In addition, 7 is a front window, 8 is a bonnet.

  A plurality of slits (not shown) are formed in the cowl grill 51, and outside air is introduced into the air box 50 from these slits, and the air is introduced from the air introduction port 21b into the air conditioner unit 4 on the vehicle compartment 3 side. Is done. When it rains, the water that has flowed into the air box 51 flows down to the flange 40, flows through the flange 40 toward both ends in the vehicle width direction, and the discharge port 52 formed in the apron 13 (see FIG. 11). Is discharged to the outside.

Next, each apron part 13 and the connection structure regarding this apron part 13 are demonstrated.
As shown in FIGS. 1 and 6 to 11, each apron section 13 includes an apron upper panel 60, an apron outer panel 61, and an apron inner panel 62, and the rear end portions of these panels 60 to 62 are side doors. A hinge pillar 9 supporting (not shown) is joined to the hinge pillar 9 to which the front pillar 6 is connected and extends forward, and each enlarged portion 21c of the dash upper panel 21 is joined to the apron portion 13, and this enlarged portion 21c. And the apron part 13 comprises the closed cross-section structure.

  Specifically, in the apron portion 13 where the enlarged portion 21c is joined, the apron upper panel 60 is formed in an L-shaped cross section, and the apron outer panel 61 is formed in an L-shaped cross section that is longer than the apron upper panel 60. The upper outer end of the apron upper panel 60 and the upper end of the apron outer panel 61 are joined, and the enlarged portion 21c is joined to the lower end of the apron upper panel 60 and joined to the inner surface of the apron outer panel 61. A closed cross-section structure 65 is formed by the apron outer panel 61 and the enlarged portion 21c.

  Further, the apron inner panel 62 is formed in a substantially vertical flat shape, the lower inner end of the apron outer panel 61 is joined to the outer surface of the apron inner panel 62, and the enlarged portion 21c is joined to the upper end of the apron inner panel 62. The outer panel 61, the apron inner panel 62, and the enlarged portion 21c form a closed cross-section structure 66 that is approximately the same size as the closed cross-section structure 65. Thus, the enlarged portion 21c is joined to the apron portion 13 while being inserted from the inner side in the vehicle width direction, and the closed section of the apron portion 13 is divided vertically by this enlarged portion 21c to form a continuous closed section structure 67. . As shown in FIG. 11, the apron outer panel 61 where the enlarged portion 21c is joined is formed with a gun insertion hole 61a into which a gun for spot welding the enlarged portion 21c to the inner surface of the apron outer panel 61 can be inserted. Has been.

  In each enlarged portion 21c, the portion inserted into the apron portion 13 is, for example, an outer end portion of about ¼ to ３ of the width in the vehicle width direction of the enlarged portion 21c, and the front end portion of the other portion is The suspension tower 5 is connected to the strut house 5a in contact with the suspension tower 5 from above. In addition, the rear end portion of each enlarged portion 21 c is joined to the hinge pillar 9. Note that flanges at both ends in the vehicle width direction of the cowl upper panel 31 of the cowl member 11 are joined to the left and right front pillars 6 respectively.

  Each apron portion 13 has a rear end portion joined to the hinge pillar 9 and extends to the front side of the suspension tower 5. The apron upper panel 60 has a length up to the vicinity of the suspension tower 5. The apron inner panel 62 extends upward and is joined to the front end portion of the apron upper panel 60. In other words, in the vicinity of the suspension tower 5 (the apron upper panel 60), the apron inner panel 62 is formed in an L-shaped section that is substantially the same as the apron outer panel 61, and the apron inner panel 62 and the apron outer panel 61 are joined to each other. Thus, a closed cross-sectional structure is configured.

  Here, the assembly | attachment to the vehicle 1 of the dash panel 10, the cowl member 11, the cowl front panel 12, and a pair of apron part 13 is demonstrated. First, the dash lower panel 20 separated from the dash upper panel 21 is assembled to the vehicle 1, the apron outer panel 61 and the apron inner panel 62 are joined to each apron portion 13, and the panels 61 and 62 are joined to the hinge pillar 9. And assembled into the vehicle 1.

  On the other hand, before assembling to the vehicle 1, the cowl lower panel 30 and the cowl upper panel 31 are joined to form the cowl member 11, the cowl member 11 and the dash upper panel 21 are joined, and the dash upper panel 21 and the cowl front panel 12 are joined, and then a pair of apron upper panels 60 are joined to the pair of enlarged portions 21c of the dash upper panel 21 to assemble the cowl component 69 (see FIG. 12). The cowl component 69 is assembled to the vehicle 1 integrally.

  In this case, as shown in FIG. 12, it is possible to adopt a docking assembling method in which the cowl component 69 is transported to the upper side of the engine room 2 and can be lowered into the engine room 2 and assembled to the vehicle 1. That is, by lowering the cowl component 69 to a predetermined position in the engine room 2, each apron upper panel 60 and apron outer panel 61, each enlarged portion 21c, apron outer panel 61, and apron inner panel 62 as shown in FIG. The dash upper panel 21 and the dash lower panel 20, each enlarged portion 21c and the strut house 5a, each end portion in the vehicle width direction of the cowl upper panel 21 and the front pillar 6 are brought into contact with each other. The cowl component 69 can be assembled to the vehicle 1 by welding, bolting, or any other connection.

The operation and effect of the front structure of the vehicle 1 will be described.
A rear end of the dash panel 10 is connected to the dash panel 10 and a cowl front panel 12 extending forward and extending in the vehicle width direction is provided. The cowl front panel 12, the dash upper panel 21 of the dash panel 10, and the cowl member 11 Since the enclosed air box 50 extending in the vehicle width direction is provided and the air introduction port 21b for the air conditioner is formed in the dash upper panel 21, first, the air in the air box 50 is directly supplied to the air introduction port 21b. Can be introduced into the air conditioner unit 4 on the side of the passenger compartment 1 from the outside, the inflow resistance of the air is reduced, and the required amount of air can be smoothly introduced into the air conditioner unit 4 on the side of the passenger compartment 1. Since it is not necessary to form an air inlet and the restriction on the shape of the cowl member 11 can be relaxed, the rigidity and strength of the cowl member 11 (vehicle body) can be reduced. Even while the eye, it is possible to increase the degree of freedom of design, including the placement of the front window 7.

  Since the vertical wall portion 12c that extends in the vehicle width direction and rises upward is integrally formed at the rear end portion of the cowl front panel 12 while maintaining the above effect, the vertical wall portion 12c of the cowl front panel 12 is integrally formed. A front wall portion of the flange portion 40 is formed, and the air inlet 21b can be moved away from the flange portion 40, that is, a portion where water flows, and the vertical wall portion 12c allows water flowing mainly through the flange portion 40 to flow. Since it is possible to shield water droplets and the like generated by scattering, it is possible to prevent the water droplets and the like from entering the air conditioner unit 4 on the vehicle compartment 1 side as much as possible. Moreover, the vertical wall portion 12c can be configured very simply by bending the rear end portion of the cowl front panel 12 without providing a separate member, which is advantageous in terms of production cost and suppresses an increase in assembly load. Furthermore, the bending and twisting rigidity of the cowl front panel 12 can be enhanced by the vertical wall portion 12c.

  Since the cowl member 11 is configured in a closed cross-sectional structure by the cowl lower panel 30 and the cowl upper panel 31 joined to the cowl lower panel 30, the strength and rigidity of the cowl member 11 (vehicle body) can be increased. That is, even if it is a so-called open cowl that is inferior in strength and rigidity from the past, the upper side of the air box 50 is opened and the air in the air box 50 is directly introduced from the air introduction port 21b to the vehicle compartment 1 side. Its strength and rigidity can be increased.

  The dash panel 10 is provided with an overhanging portion 21a projecting forward, and the cowl front panel 12 is releasably connected to the overhanging portion 21a, so that the air box 50 and the collar portion 40 can be reliably secured in an appropriate shape and size. Since the cowl front panel 12 connected to the dash panel 10 can be easily removed, the cowl front panel 12, the dash panel 10, the cowl member 11, and other nearby members can be formed.・ Maintenance is improved when equipment is maintained.

  Since the extended vertical wall portion 41 that extends upward and forward from the vertical wall portion 12c is provided at least in a portion of the vertical wall portion 12c that is positioned on the front side of the air introduction port 21b, water droplets or the like are generated from the air introduction port 21b. Intrusion into the passenger compartment 1 can be prevented more reliably.

  A pair of enlarged portions 21c extending forward are integrally provided at both ends of the dash upper panel 21 of the dash panel 10 in the vehicle width direction, and each enlarged portion 21c is joined to the apron portion 13, and the enlarged portions 21a Since the apron portion 13 forms a closed cross-sectional structure, the connection between the dash panel 10 and the apron portion 13 is strengthened, the rigidity of the apron portion 13 is enhanced, and the front end portions of the pair of enlarged portions 21c are paired with a pair. Since the suspension tower 5 is connected to the suspension tower 5, the rigidity of the structure around the suspension tower 5 such as the dash panel 10 and the apron portion 13 can be sufficiently increased.

  That is, the rigidity of the vehicle body is increased, and even when a large load is applied to the suspension tower 5 during cornering or the like, the deformation on the vehicle body side can be suppressed, and the suspension performance of the vehicle 1 can be fully exerted to improve steering stability. . Moreover, since such a connection structure is achieved by providing the pair of enlarged portions 21c integrally with the dash upper panel 21 without providing a separate member, the strength of the connection structure is increased, which is advantageous in terms of manufacturing cost.

  The apron portion 13 has an apron upper panel 60 and an apron outer panel 61 joined to the apron upper panel 60. Since the enlarged portion 21c is joined to the lower end of the apron upper panel 60 and joined to the inner surface of the apron outer panel 61. The apron upper panel 60, the apron outer panel 61, and the enlarged portion 21c form a closed cross-section structure 65, thereby securely strengthening the coupling between the dash panel 10 and the apron portion 13 and reliably increasing the rigidity of the apron portion 13. it can.

  Since the rear end portion of each enlarged portion 21c is joined to the hinge pillar 9 that supports the side door, the dash panel 10 and the hinge pillar 9 are securely coupled to increase the coupling strength, and the suspension tower such as the dash panel 10 and the apron portion 13 is provided. 5 The rigidity of the surrounding structure can be reliably increased.

  The apron part 13 has an apron inner panel 62 joined to the apron outer panel 61. The enlarged part 21c is joined to the upper end of the apron inner panel 62, and the closed section of the apron part 13 is vertically divided by the enlarged part 21c. Since the continuous closed cross-section structure 67 is configured, the coupling between the dash panel 10 and the apron portion 13 can be more reliably strengthened, and the rigidity (torsional rigidity) of the apron portion 13 can be more reliably increased.

  In the vicinity of the suspension tower 5, the apron inner panel 62 is extended upward and joined to the front end portion of the apron upper panel 60, so that the apron upper panel 60 has a length to the vicinity of the suspension tower 5, and the apron portion 13 is substantially the same. The entire structure can be a closed cross-sectional structure. When the cowl member 11, the cowl front panel 12, the dash upper panel 21, the apron upper panel 60, and the like are assembled to assemble the cowl component 69, the cowl component 69 is integrated. It is possible to employ a docking assembly method in which the vehicle is lowered into the engine room 2 and assembled to the dash lower panel 20, the apron outer panel 61, the apron inner panel 62, and the like that have been assembled to the vehicle 1 in advance.

Next, you may change the said Example as follows.
1] The cowl member 11 is composed of one member, and has an open cross-sectional structure.
2] A projecting portion that projects forward is integrally provided on the dash lower panel 20, and the cowl front panel 12 is releasably connected to the projecting portion.
3] A pair of enlarged portions are integrally provided on the dash lower panel 20.
4] The extended vertical wall 41 is omitted.

5] The dash upper panel 21 and the cowl front panel 12 are integrally formed.
6] The extended vertical wall portion 41 is provided over the entire width of the vertical wall portion 12c in the vehicle width direction.
7] Extend the extended vertical wall 41 only upward from the vertical wall 12c.
8] The extended vertical wall portion 41 is integrally formed with the vertical wall portion 12c (the cowl front panel 12).
9] In addition, various configurations can be added without departing from the spirit of the present invention.

It is a perspective view of the front part structure of the vehicle concerning the example of the present invention. It is a disassembled perspective view of the principal part of the front part structure of a vehicle. It is a perspective view of a dash upper panel and a cowl member. It is a disassembled perspective view of a dash upper panel and a cowl member. It is a longitudinal cross-sectional view of the principal part of the front part structure of a vehicle. It is a perspective view at the time of vehicle assembly | attachment of a dash upper panel and a cowl member. It is a perspective view of the suspension tower vicinity of the front part structure of a vehicle. It is a perspective view in the state where a part of an apron part and an enlarged part were notched. It is a longitudinal cross-sectional view of the principal part of the front part structure of a vehicle. It is a longitudinal cross-sectional view of an apron part and an enlarged part. It is a perspective view of an apron part and an expansion part. It is a perspective view at the time of the assembly | attachment of the front part structure of a vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Engine room 3 Cabin 5 Suspension tower 9 Hinge pillar 10 Dash panel 11 Cowl member 12 Cowl front panel 12c Vertical wall part 13 Apron part 20 Dash lower panel 21 Dash upper panel 21a Overhang part 21b Air introduction port 21c Expansion part 30 Cowl Lower panel 31 Cowl upper panel 40 Hook 41 Extended vertical wall 50 Air box 51 Cowl grill 60 Apron upper panel 61 Apron outer panel 62 Apron inner panel

Claims (6)

A pair of aprons extending in the vehicle width direction at a part separating the engine room and the vehicle compartment of the vehicle, and a pair of aprons arranged at both left and right ends of the engine room and connected to both ends of the dash panel in the vehicle width direction In the front structure of the vehicle with a portion,
The dash panel has a dash lower panel and a dash upper panel joined to the dash lower panel,
A pair of enlarged portions extending forward are integrally provided at both ends of the dash panel in the vehicle width direction, and front ends of these enlarged portions are respectively connected to a pair of suspension towers.
A front part structure of a vehicle, wherein each of the enlarged parts is joined to the apron part, and the enlarged part and the apron part form a closed cross-sectional structure.   The apron part has an apron upper panel and an apron outer panel joined to the apron upper panel, and the enlarged part is joined to a lower end of the apron upper panel and to an inner surface of the apron outer panel. The vehicle front structure according to claim 1.   The vehicle front structure according to claim 2, wherein a rear end portion of each of the enlarged portions is joined to a hinge pillar that supports a side door.   The apron portion has an apron inner panel joined to an apron outer panel, and the enlarged portion is joined to the apron inner panel at the upper end, and the closed cross section structure of the apron portion is vertically divided by the enlarged portion. The front part structure of the vehicle according to claim 2 or 3, wherein   The vehicle front structure according to claim 4, wherein an apron inner panel extends upward and is joined to a front end portion of the apron upper panel in the vicinity of the suspension tower. A cowl front panel having a rear end connected to the dash panel and extending forward and extending in the vehicle width direction and having both ends in the vehicle width direction connected to a pair of enlarged portions, the cowl front panel and the dash upper An air box extending in the vehicle width direction surrounded by a member including a panel,
An air inlet for an air conditioner is formed in the dash upper panel, and a vertical wall portion extending in the vehicle width direction and rising upward is integrally formed at a rear end portion of the cowl front panel. The front part structure of the vehicle in any one of 1-5.