JP4935363B2 - Front body structure of automobile - Google Patents

Description

  The present invention relates to a front body structure of an automobile, and in particular, the upper end of both end portions in the vehicle width direction of a vertical wall portion extending upward from the front end of a lateral wall portion of a cowl front is positioned above a suspension tower. The present invention relates to a front vehicle body structure configured to improve the mounting structure at both ends in the vehicle width direction of the front so as to increase the mounting rigidity.

  2. Description of the Related Art Conventionally, in a front body structure of an automobile, as in Patent Document 1, a dash lower that partitions an engine room and a vehicle compartment and a dash upper coupled to the upper end thereof are provided, and a cowl is provided at a lower front end of the dash upper. The front is joined.

  And the structure of patent document 1 is also the same, but a dash upper is extended to the lower part of the both ends of the vehicle width direction, and a pair of left and right dash uppers extended to the upper surface of a pair of left and right suspension towers. A horizontal wall portion having a protruding portion, the cowl front extending from the dash upper portion to the front side, and a vertical wall portion extending upward from the front end of the horizontal wall portion and having upper ends at both ends in the vehicle width direction positioned above the suspension tower Structures having are known.

  As a background for configuring such a front body structure, for example, the height position of the suspension tower is determined according to the performance of the automobile, while the design including the position and posture of the windshield and cowl grill is involved. Can be mentioned.

  Normally, the vertical wall portion of the cowl front is formed in an inclined shape that moves forward as it moves upward, and a cowl member that supports the lower end portion of the windshield is coupled to the rear portion of the dash upper so that the dash upper, the cowl front, the cowl member Thus, a cowl structure opened upward is formed between the bonnet and the windshield, and the upper opening of the cowl structure is covered with a cowl grill made of synthetic resin.

  Here, in the front body structure of Patent Document 1, the outer end portion in the vehicle width direction of the dash upper is coupled to the apron member, and the outer end portion in the vehicle width direction of the cowl front is connected to the dash upper, apron member, and apron via the bracket. The hinge pillar member is connected to the member.

  The bracket has a bottom plate portion and an inclined plate portion that is inclined so as to move forward from the front end of the bottom plate portion, and the bottom plate portion of the bracket is coupled to the upper surface of the dash upper, and the vehicle width direction of the bracket A flange portion formed on the outer end portion of the bracket in the vehicle width direction, with the outer end portion in the vehicle width direction of the cowl front overlapped with the inner end portion from the rear and upper side, and the upper end portion and the lower end portion of the cowl front are respectively bolted. Are coupled to the apron member and the hinge pillar member.

JP 2004-262290 A

  As described above, in the front vehicle body structure in which the upper ends of both end portions in the vehicle width direction of the vertical wall portion of the cowl front are positioned above the suspension tower, both end portions in the vehicle width direction of the cowl front are connected to the dash upper and apron members ( Even if it is coupled to the hinge pillar member), there is a possibility that the mounting rigidity of the cowl front at both ends in the vehicle width direction cannot sufficiently increase the mounting rigidity.

  In the front vehicle body structure of Patent Document 1, the outer end portion of the cowl front in the vehicle width direction is coupled to the dash upper, apron member, and hinge pillar member via a bracket. This bracket extends the cowl front. However, the basic mounting structure at both ends of the cowl front in the vehicle width direction cannot be improved, and the same problem as described above occurs.

  Here, in the front body structure of Patent Document 1, the bracket is provided with a bulging portion to increase rigidity, and a wiper is attached to the upper end portion of the bulging portion. However, the bracket itself has a sufficient mounting rigidity. Since it cannot raise, there exists a possibility that the support strength of a wiper cannot fully be ensured. Therefore, it seems that it is practically difficult to attach the bonnet to this bracket. Therefore, the bonnet is supported by the hinge pillar member. Therefore, it is necessary to sufficiently increase the rigidity of the hinge pillar member. The structure may also become complicated.

  The object of the present invention is to reliably increase the mounting rigidity of both ends of the dash upper in the vehicle width direction, and to improve the mounting rigidity by improving the mounting structure of both ends of the cowl front in the vehicle width direction. It is an object of the present invention to provide a front body structure of an automobile that can improve the mounting structure of the vehicle and reliably increase the support rigidity.

The front body structure of the automobile according to claim 1 includes a dash lower that partitions the engine room and the vehicle compartment of the automobile, a dash upper coupled to the upper end thereof, a cowl front coupled to a lower portion of the dash upper , A left and right 1 comprising a pair of apron members and a pair of left and right pillar members , wherein the dash upper extends forward to the lower portions of both ends in the vehicle width direction and is coupled to the upper surfaces of the pair of left and right suspension towers. A pair of dash upper extending portions, the cowl front extending from the dash upper to the front side, and extending from the front end of the horizontal wall portion to the upper side so that the upper ends of both ends in the vehicle width direction are above the suspension tower. the front body structure for an automotive vehicle having a vertical wall portion located, connecting a pair of left and right which are respectively disposed above the dash upper extending portion of the pair bracket Met, the rear end is fixed to the rear vertical wall portion of the dash upper through cowl member coupled to the dash upper to the upper position than the upper surface of the suspension tower, the front end is connected to the upper surface of the suspension tower A pair of left and right connecting brackets connected to the apron member, the outer end portion of the vehicle width direction being connected to the pillar member, and the cowl front bridges between the pair of dash upper extending portions. a body member arranged, the connecting bracket is fixed且 one vehicle width direction outer side portion in the vehicle width direction inner side portion in the vehicle width direction end portions of the vertical wall portion of the body member and the pair A pair of left and right side members coupled to each other, and a vertical wall portion of the cowl front is constituted by a vertical wall portion of the main body member and a pair of left and right side members, Forward to its bottom Possess the extending reinforcing portion is coupled to the vehicle width direction inner end portion of the suspension tower extending, vertical wall portion in the vehicle width direction outer end portion of said body member is formed in an inclined shape to shift forward as upward The connecting bracket has an inclined wall portion that inclines so as to move forward in the downward direction, and an outer end portion in the vehicle width direction of the vertical wall portion of the main body member at an inner side portion in the vehicle width direction of the side member. A first inclined portion that inclines so as to move forward toward the upper side so as to be able to be coupled in abutting manner, and is coupled to the inclined wall portion in an abutting manner on an outer side portion in the vehicle width direction of the side member. A second inclined portion that is inclined so as to shift forward as far as possible is formed .

  In the front body structure of this automobile, a dash lower for partitioning the engine room and the vehicle compartment and a dash upper coupled to the upper end thereof are provided, and a cowl front is coupled to a lower portion of the dash upper. The dash upper has a pair of left and right dash upper extensions extending forward at the bottom of both ends in the vehicle width direction, and these dash upper extensions are coupled to the upper surfaces of the pair of left and right suspension towers. Yes. The suspension tower is configured to have high rigidity in order to receive a large load, and the dash upper has a dash upper extension portion attached to the suspension tower so that the attachment rigidity is increased.

  The cowl front has a horizontal wall portion that extends forward from the dash upper and a vertical wall portion that extends upward from the front end of the horizontal wall portion. Here, it is desirable that the cowl front be detachably coupled to the dash upper (for example, bolt coupling), so that the dash upper can be assembled in a state where the dash upper is assembled at a fixed position of the vehicle body. The cowl front that is coupled to the side extends to the front engine room side, but the workability of the engine room can be improved by removing the cowl front from the dash upper.

  Now, the upper ends of both ends in the vehicle width direction of the vertical wall of the cowl front are located above the suspension tower. For example, the height of the suspension tower is determined according to the performance of the vehicle. On the other hand, it is constituted by the background related to the design including the position and posture of the windshield and cowl grille.

  A pair of left and right connecting brackets are disposed above the pair of dash upper extending portions of the dash upper, and the rear vertical wall portion of the dash upper in which the rear end of the connecting bracket is located above the upper surface of the suspension tower. Since the front end of the connection bracket is connected to the upper surface of the suspension tower, the mounting rigidity of the dash upper and the connection bracket at both ends in the vehicle width direction is reliably increased. Here, the connecting bracket is overlapped on the upper surface of the dash upper extension part and coupled to the suspension tower, and the closed section is formed by the dash upper including the dash upper extension part and the connection bracket, etc. The mounting rigidity of the dash upper and the connecting bracket is further increased.

  Moreover, the cowl front is fixed to both ends of the body member in the vehicle width direction of the main body member and the vertical wall portion of the main body member which are arranged so as to bridge between the pair of dash upper extension portions, and the vertical wall portion of the cowl front. The side members are coupled to a pair of connecting brackets, and the side members extend forward in the lower part thereof. An extension reinforcement portion is provided, and the extension reinforcement portion is coupled to the suspension tower.

  In this way, both end portions in the vehicle width direction of the vertical wall portion of the cowl front can be coupled to the main body member, the connecting bracket, and the suspension tower as a pair of side members separate from the main body member of the cowl front. In other words, both end portions of the cowl front in the vehicle width direction are connected to a connection bracket having a high mounting rigidity and a suspension tower having a high rigidity by side members thereof. That is, the mounting structure at both ends of the cowl front in the vehicle width direction is improved and the mounting rigidity is reliably increased. Further, since the attachment rigidity of the connecting bracket is high, attaching the bonnet and the wiper to the connecting bracket improves the attachment structure of the bonnet and the wiper, and the support rigidity is reliably increased.

Since the inner side portion in the vehicle width direction of the side member is coupled to the vertical wall portion of the main body member and the outer side portion in the vehicle width direction is coupled to the connecting bracket, the side member can be used in the vehicle width direction of the cowl front. Both ends can be securely connected to the connection bracket and suspension tower. In addition, since the extended reinforcement portion of the side member is coupled to the inner end portion in the vehicle width direction of the suspension tower, the outer end portion in the vehicle width direction can be fastened to the apron member or the pillar member in the dash upper and the side member. The mounting rigidity on the side spaced inward from the outer end in the vehicle width direction can be kept high. Since the connection bracket is connected to the rear vertical wall portion of the dash upper via the cowl member, the connection bracket, the cowl member, and the dash upper can form a closed cross section to increase the rigidity of these members. .
The outer end portion in the vehicle width direction of the connecting bracket is connected to the apron member, and the first inclined portion of the inner side portion in the vehicle width direction of the side member is in contact with the outer end portion in the vehicle width direction of the vertical wall portion of the main body member. Since the second inclined portion of the outer side portion in the vehicle width direction is connected in contact with the inclined wall portion of the connection bracket, the side member can be reliably connected to both the main body member and the connection bracket. .
It is possible to employ the following configuration as the dependent claims of the invention 請 Motomeko 1.
Comprising a pair of left and right brace member for reinforcing the upper surface of the suspension tower before Symbol pair, extending reinforcing portion of the one pair of monkey coupled to a pair of brace members (claim 2).

It said brace member has a brace extending portion extending inward in the vehicle widthwise direction than the suspension tower, extending reinforcing portion is coupled to the brace extending portion (claim 3). While being coupled to the brace member of the pair are superimposed and extending reinforcement section of said pair comprises a left and right pair reinforcement bracket coupled to a lower surface of the lateral wall of the body member (claim 4).

Before Stories section member is provided for partitioning the closed section space formed by the dash upper and the cowl member and the connecting bracket comprising a dash upper extending portion, the side member is coupled via a connection bracket to clause member ( Claim 5 ).

According to the vehicle front body structure of the first aspect of the present invention, the vehicle includes a dash lower, a dash upper, a cowl front , a pair of left and right apron members, and a pair of left and right pillar members, In a structure in which the upper ends of both end portions in the width direction are located above the suspension tower, the dash upper is disposed above each of the pair of dash upper extending portions and the rear end is located above the upper surface of the suspension tower. A pair of left and right connecting brackets are fixed to the rear vertical wall, the front end is connected to the top surface of the suspension tower, and the outer end in the vehicle width direction is connected to the apron member. The vehicle body width of the vertical wall portion of the cowl front fixed to both ends of the main body member arranged so as to bridge between the protruding portions and the vertical wall portion of the main body member in the vehicle width direction A pair of left and right side members that form opposite ends and are coupled to a pair of connecting brackets, and the side members extend forward to the lower portion thereof and are connected to the suspension tower. Part.

  In other words, the mounting rigidity of the dash upper and the connecting bracket at both end portions in the vehicle width direction can be reliably increased, and the both end portions in the vehicle width direction of the vertical wall portion of the cowl front are separated from the main body member of the cowl front. A pair of side members is provided in a shape that can be coupled to the main body member, the connection bracket, and the suspension tower, and both end portions in the vehicle width direction of the cowl front are connected to the connection bracket with high mounting rigidity by the side members. Since it can be connected to a suspension tower with a high height, the mounting structure at both ends in the vehicle width direction of the cowl front can be improved to increase the mounting rigidity, and the mounting rigidity of the connecting bracket can be increased. By attaching the bonnet and wiper to the bracket, the mounting structure of the bonnet and wiper is improved and the support rigidity is increased. It also becomes possible to increase indeed.

Further , since the inner side portion of the side member in the vehicle width direction is coupled to the main body member and the outer side portion in the vehicle width direction is coupled to the connecting bracket, both side portions of the cowl front in the vehicle width direction are connected by the side member. The connecting bracket and the suspension tower can be securely connected, and the extension reinforcement is connected to the inner end of the suspension tower in the vehicle width direction, so the apron at the outer end in the vehicle width direction of the dash upper and the side member (cowl front) It can be fastened to a member or pillar member, but the mounting rigidity on the side away from the outer end in the vehicle width direction can be kept high, and the rear end of the connecting bracket is connected to a cowl member connected to the dash upper Therefore, the connecting bracket can be connected to the rear vertical wall portion of the dash upper via the cowl member, and the connecting bracket, the cowl member, and the dash upper Forming a cross-section, it is possible to increase the rigidity of these members.
Further, the side member inclines so that it moves forward in the vehicle width direction inner side portion so that it can be connected to the vehicle width direction outer end portion of the vertical wall portion of the main body member of the cowl front so as to come into contact with each other. Since it has 1 inclination part and it has the 2nd inclination part which inclines so that it may be connected to the inclination wall part of a connection bracket in the shape of contact in the vehicle width direction outside side part of a side member so that it may move ahead toward the lower part. The side member can be securely coupled to both the main body member and the connecting bracket.

According to the front vehicle body structure of an automobile according to claim 2, the pair of left and right brace members that reinforce the upper surfaces of the pair of suspension towers are provided, and the extended reinforcing portions of the pair of side members are paired with the pair of brace members. Since the brace member for suspension tower reinforcement is used, the extended reinforcement part of the side member can be securely coupled to the brace member, and the mounting rigidity at both ends of the cowl front in the vehicle width direction is ensured. Can be increased.

According to the vehicle front body structure of the third aspect of the present invention, the brace member has the brace extending portion extending inward in the vehicle width direction from the suspension tower, and the extending reinforcing portion is coupled to the brace extending portion. Therefore, by slightly changing (ingenuating) the shape of the brace member, the extended reinforcing portion of the side member can be securely coupled to the brace member, and the coupling position is positioned further inward in the vehicle width direction. Therefore, in the dash upper and the side member, the mounting rigidity on the side farther inward from the outer end in the vehicle width direction can be kept high.

According to the vehicle front body structure of the fourth aspect of the present invention, the left and right 1 coupled to the pair of brace members overlapped with the pair of extending reinforcing portions and coupled to the lower surface of the lateral wall portion of the body member of the cowl front. Since the pair of reinforcing brackets are provided, the strength of attaching the side member and the main body member to the brace member can be increased, and the torsional rigidity of the main body member and the side member (the cowl front) can be increased.

According to the front vehicle body structure of an automobile according to claim 5, a node member for partitioning a closed cross-sectional space formed by a dash upper including a dash upper extension portion, a cowl member, and a connection bracket is provided, and the connection bracket is provided on the node member. Since the side member is joined via the connecting bracket, the rigidity of the connecting bracket is increased, the mounting strength of the side member to the connecting bracket is surely increased, and the rigidity of the connecting bracket is increased. When the bonnet and the wiper are attached, the support rigidity of the bonnet and the wiper can be more reliably increased.

  The vehicle front body structure of the present invention includes a dash lower that partitions an engine room and a vehicle compartment of the vehicle, a dash upper coupled to the upper end thereof, and a cowl front coupled to a lower front end of the dash upper. The dash upper has a pair of left and right dash upper extensions that extend forward at the bottom of both ends in the vehicle width direction and are coupled to the upper surfaces of the pair of left and right suspension towers. Applied to a front body structure of an automobile having a horizontal wall portion extending from the upper side to the front side and a vertical wall portion extending upward from the front end of the horizontal wall portion and having upper ends at both ends in the vehicle width direction positioned above the suspension tower. Is.

  As shown in FIG. 1, a front body structure 1 of an automobile includes a pair of left and right front side frames 2, a pair of left and right apron members 3, a pair of left and right pillar members 4, and a pair of left and right suspension towers 5 (hereinafter referred to as the left and right pairs). , Suspension tower 5), dash panel 6, cowl structure 7, and the like. The rear end portion of the front side frame 2 is coupled to the dash panel 6, the rear end portion of the apron member 3 is coupled to the pillar member 4, and the suspension tower 5 is coupled to the front side frame 2 and the apron member 3.

  As shown in FIGS. 1 to 8, the dash panel 6 divides the engine room 1 a and the vehicle compartment 1 b and has a dash lower 10 (dash lower panel 10) and a dash coupled to the upper end of the dash lower 10. And an upper 15 (dash upper panel 15).

Both ends of the dash lower 10 in the vehicle width direction are coupled to a pair of pillar members 4 and the like, and a rear end portion of the pair of front side frames 2 is coupled to a central portion in the vertical direction of the dash lower 10. A front end portion of a floor panel (not shown) is coupled to the lower end portion of 10. A pair of suspension towers 5 are disposed in front of both ends of the dash lower 10 in the vehicle width direction, and the height positions of the upper end of the suspension tower 5 and the upper end of the dash lower 10 are substantially the same.

  An upper end flange portion 10 a projecting forward is formed at the upper end portion of the dash lower 10, and the upper end flange portion 10 a is coupled to the dash upper 15. The lower portion of the dash lower 10 is formed in an inclined shape that moves backward as it goes downward, and a tunnel portion 10b that swells upward is formed at the center of the lower portion of the dash lower 10 in the vehicle width direction. An engine exhaust pipe (not shown) is provided at 10b.

The dash upper 15 has a bottom wall portion 16 and a rear vertical wall portion 17 extending upward from the rear end of the bottom wall portion 16. The bottom wall portion 16 is formed such that a rear end portion thereof is horizontally formed, and an upper end flange portion 10a of the dash lower 10 is coupled to a lower surface of the rear end portion of the bottom wall portion 16 so that a front portion of the bottom wall portion 16 is approximately forward. The cowl front 20 is coupled to the front end portion of the bottom wall portion 16 (the lower front end portion of the dash upper 11) via a seal member 25.

  The dash upper 15 has a pair of left and right dash upper extending portions 18 extending forward from the bottom wall portion 16 at the lower portions of both ends in the vehicle width direction, and these dash upper extending portions 18 are a pair of suspension towers. 5 is coupled to the upper surface. Here, a brace member 50 (to be described later) is coupled to the upper surface of the suspension tower 5, but the dash upper extension 18 is in the vehicle width direction of the rear end portion of the upper surface of the suspension tower 5 other than the coupling portion of the brace member 50. Connected to the outer end.

As shown in FIGS. 1 to 8, the cowl structure 7 includes a dash lower 10, a cowl member 19 (a cowl panel 19), and a cowl front 20 (a cowl front panel 20).

The dash upper 15 has a bottom wall portion 16 and a rear vertical wall portion 17, and the rear vertical wall portion 17 is formed substantially vertically at both end portions in the vehicle width direction and extends forward in other portions. Is formed. A front end flange portion 16 a projecting forward is formed at the front end portion of the bottom wall portion 16, and an upper end flange portion 17 a projecting rearward is formed at the upper end portion of the rear vertical wall portion 17.

The cowl member 19 is disposed on the upper side of the bottom wall portion 16 of the dash upper 15 and on the front side of the rear vertical wall portion 17, is formed substantially vertically at both ends in the vehicle width direction, and the rear portion of the dash upper 15 at the other portions. It is formed so as to project forward from the vertical wall portion 17. A lower end flange portion 19 a projecting forward is formed on the lower end portion of the cowl member 19, and an upper end flange portion 19 b projecting rearward is formed on the upper end portion of the cowl member 19.

  The upper end flanges 17a and 19b of the dash upper 15 and the cowl member 19 are coupled to each other, and the lower end flange 19a of the cowl member 19 is coupled to the bottom wall 16 of the dash upper 15 together with the upper end flange 10a of the dash lower 10; The dash upper 15 and the cowl member 19 form a closed cross section.

  The cowl front 20 has a horizontal wall portion 21 extending forward from the bottom wall portion 16 of the dash upper 15 and a vertical wall extending upward from the front end of the horizontal wall portion 21 so that the upper ends of both end portions in the vehicle width direction are located above the suspension tower 5. Part 22. Here, as shown in FIGS. 1 to 11, the front vehicle body structure 1 includes a pair of left and right brace members 50, a pair of left and right connecting brackets 60, a pair of left and right reinforcing brackets 70, and a pair of left and right node members. 80.

  The pair of brace members 50 reinforce the upper surfaces of the pair of suspension towers 5 and are formed in a thick ring shape. The top wall top portions (connection holes of suspension dampers) are formed on the upper surface of the suspension tower 5. Combined to surround. The brace member 50 includes a brace body 51 and a brace extension 52 extending from the brace body 51 inward in the vehicle width direction than the suspension tower 5. The brace extending part 52 is formed integrally with the brace body part 51, and is formed in an inclined shape that moves upward toward the rear.

  The pair of connecting brackets 60 are respectively disposed above the pair of dash upper extending portions 18 and fixed to the rear vertical wall portion 17 of the dash upper 15 whose rear end is located above the upper surface of the suspension tower 5. The front end is connected to the upper surface of the suspension tower 5, and has an upper wall portion 61 and an inclined wall portion 62 that extends so as to move forward from the front end of the upper wall portion 61 downward.

  An upper end flange portion 61 a projecting upward is formed at the upper end portion of the upper wall portion 61, and the upper end flange portion 61 a is coupled to the front surface of the cowl member 19. That is, the connecting bracket 60 is connected to the rear vertical wall portion 17 of the dash upper 15 via the cowl member 19. A lower end flange portion 62 a projecting forward is formed at the lower end portion of the inclined wall portion 62, and the lower end flange portion 62 a is coupled to the upper surface of the dash upper extension portion 18.

  In other words, the dash upper extension 18 and the lower end flange 62a of the connection bracket 60 are overlapped and coupled to the upper surface of the suspension tower 5, and the dash upper 15 including the dash upper extension 18, the cowl member 19, and the connection bracket. 60 and a closed section is formed. Side end flange portions 61 b and 62 b are formed at outer end portions in the vehicle width direction of the upper wall portion 61 and the inclined wall portion 62, and the side end flange portions 61 b and 62 b are coupled to the apron member 3.

  Here, a bonnet attachment hinge 65 that rotatably supports a rear end portion of a bonnet (not shown) is fixed to the pair of connection brackets 60, and at least one (for example, the driver's seat side (right side)). A wiper mounting member 67 that supports the base end portion of the wiper 66 is fixed to the connection bracket 60 (see FIG. 3).

  Here, the lower end portion of the windshield 26 is supported on the front portion of the upper end portion of the cowl member 19 via the seal 27, and between the front upper end portion of the cowl member 19 and the cowl front 20 (bonnet (not shown) and the windshield). 26) is opened upward, and the upper opening is covered with a cowl grill 28 made of synthetic resin. The rear vertical wall portion 17 and the cowl member 19 of the dash upper 15 are formed with an air inlet to the vehicle compartment 1b side.

  The cowl front 20 is fixed to both ends of the main body member 30 disposed so as to bridge between the pair of dash upper extension portions 18 and the vertical wall portion 22 of the main body member 30 in the vehicle width direction. A pair of left and right side members 40 that constitute both ends in the vehicle width direction of the 20 vertical wall portions 22 and are coupled to a pair of connection brackets 60.

  The main body member 30 is formed with all of the lateral wall portion 21 of the cowl front 20 and most of the vertical wall portion 22, and the vertical wall portion 22 including both end portions in the vehicle width direction of the main body member 30 is inclined so as to move forward. An upper end flange portion 22a projecting forward is formed at the upper end of the vertical wall portion 22, and the front end portion of the cowl grille 28 is fixed to the upper end flange portion 22a.

  The lateral member 40 has an inner side portion in the vehicle width direction coupled to the vertical wall portion 22 of the main body member 30, an outer side portion in the vehicle width direction coupled to the connection bracket 60, and extends forward at a lower portion thereof. And an extended reinforcing portion 41 coupled to the suspension tower 5. The side member 40 inclines so that it may move forward in the vehicle width direction inner side portion so as to be able to be coupled to the vehicle width direction outer end portion of the vertical wall portion 22 of the main body member 30 in an abutting manner. A second inclined portion 43 that has one inclined portion 42 and is inclined so as to move forward in the downward direction so as to be connectable to the inclined wall portion 62 of the connecting bracket 60 at the outer side portion in the vehicle width direction. Have.

The extended reinforcing portion 41 is formed on the inner end portion of the side member 40 in the vehicle width direction so as to protrude from the lower end of the first inclined portion 42 to the obliquely lower front side, and the extended reinforcing portion 41 is the brace member 50. The brace extending portion 52 is coupled to the inner end portion of the suspension tower 5 in the vehicle width direction via a brace member 50 while being in contact with the brace extending portion 52 from above. A seal 44 is engaged and attached to the lower end of the second inclined portion 43, and the gap between the side member 40 and the connection bracket 60 is sealed by the seal 44.

  Here, the reinforcing bracket 70 is formed in a cross-sectional shape, the front end portion of the reinforcing bracket 70 abuts on the upper surface of the brace extending portion 52 of the brace member 50, and the upper surface of the front end portion of the reinforcing bracket 70 is laterally contacted. The extended reinforcing portion 41 of the member 40 is brought into contact, and the front end portion of the reinforcing bracket 70 is overlapped with the extended reinforcing portion 41 and coupled to the brace extending portion 52 by the bolts and nuts 45. The rear portion of the reinforcing bracket 70 is coupled to the lower surface of the lateral wall portion 21 of the main body member 30 of the cowl front 20.

Here, the node member 80 partitions a closed cross-sectional space formed by the dash upper 15 including the dash upper extending portion 18, the cowl member 19, and the connecting bracket 60, and a vertical wall 81 having the same shape as the closed cross-section. And flanges 81a and 81b projecting outward from the edge of the vertical wall 81 in the vehicle width direction. The second inclined portion 43 of the side member 40 is fastened to the node member 80 by a bolt / nut 82 through the inclined wall portion 62 of the connecting bracket 60 to the flange 81a, and the upper wall portion 61 of the connecting bracket 60 to the flange 81b. The bonnet attachment hinge 65 is fastened with bolts and nuts 83 via

The front vehicle body structure 1 described above has the following effects.
In the structure including the dash lower 10, the dash upper 15, and the cowl front 20, and the upper ends of both end portions in the vehicle width direction of the vertical wall portion 22 of the cowl front 20 are positioned above the suspension tower 5, a pair of dash upper extending portions 18 are respectively arranged above the upper surface of the suspension tower 5, the rear end is fixed to the rear vertical wall portion 17 of the dash upper 15, and the front end is connected to the upper surface of the pair of suspension towers 5. The cowl front 20 includes a main body member 30 disposed so as to bridge between the pair of dash upper extension portions 18, and both ends of the vertical wall portion 22 of the main body member 30 in the vehicle width direction. A pair of left and right side members 40 that are fixed to each other and that constitute both ends in the vehicle width direction of the vertical wall portion 22 of the cowl front 20 and are coupled to a pair of connecting brackets 60, Rectangular member 40 has an extending reinforcing portion 41 is coupled to the suspension tower 5 extending forwardly thereunder.

  That is, the mounting rigidity of the dash upper 15 and the connecting bracket 60 at both end portions in the vehicle width direction can be reliably increased, and the both end portions in the vehicle width direction of the vertical wall portion 22 of the cowl front 20 are connected to the body member of the cowl front 20. As a pair of side members 40 different from 30, the side members 40 are provided in a shape that can be coupled to the main body member 30, the connecting bracket 60, and the suspension tower 5. Thus, the connecting bracket 60 having a high mounting rigidity and the suspension tower 5 having a high rigidity can be connected, so that the mounting structure at both ends in the vehicle width direction of the cowl front 20 can be improved and the mounting rigidity can be reliably increased. Since the mounting rigidity of the bracket 60 can be increased, the bonnet mounting hinge 65 and the wiper mounting member are attached to the connecting bracket 60. 7 attached, the hood also allows to improve the attachment structure of the wiper reliably increase the supporting rigidity.

  Since the inner side portion in the vehicle width direction of the side member 40 is coupled to the main body member 30 and the outer side portion in the vehicle width direction is coupled to the connecting bracket 60, the side member 40 allows the cowl front 20 to move in the vehicle width direction. Since both end portions can be reliably connected to the connection bracket 60 and the suspension tower 5 and the extension reinforcing portion 41 is coupled to the inner end portion in the vehicle width direction of the suspension tower 5, the dash upper 15 and the side member 40 (the cowl front 20) The outer end portion in the vehicle width direction can be fastened to the apron member 3 and the pillar member 4, but the mounting rigidity on the side away from the outer end portion in the vehicle width direction can be kept high. Since it is coupled to the cowl member 19 coupled to the dash upper 15, the coupling bracket 60 can be coupled to the rear vertical wall portion 17 of the dash upper 15 via the cowl member 19. To form a closed cross section with the connecting bracket 60 and the cowl member 19 and the dash upper 15, it is possible to increase the rigidity of these members.

  A pair of left and right brace members 50 that reinforce the upper surfaces of the pair of suspension towers 5 are provided, and the extended reinforcement portions 41 of the pair of side members 40 are coupled to the pair of brace members 50. By using the brace member 50, the extended reinforcing portion 41 of the side member 40 can be reliably coupled to the brace member 50, and the mounting rigidity of both end portions in the vehicle width direction of the cowl front 20 can be reliably increased. .

  Since the brace member 50 has a brace extension 52 extending inward in the vehicle width direction from the suspension tower 5 and the extension reinforcement 41 is coupled to the brace extension 52, the shape of the brace member 50 is slightly changed. By (devising), the extended reinforcing portion 41 of the side member 40 can be reliably coupled to the brace member 50, and the coupling position can be positioned more inward in the vehicle width direction. In the dash upper 20 and the side member 40, the mounting rigidity on the side farther inward from the outer end in the vehicle width direction can be kept high.

  Since a pair of left and right reinforcing brackets 70 coupled to the pair of brace members 50 are overlapped with the pair of extending reinforcing portions 41 and coupled to the lower surface of the lateral wall portion 21 of the main body member 30 of the cowl front 20, a pair of reinforcing brackets 70 are provided. The strength of attaching the side member 40 to the main body member 30 and the brace member 50 can be increased, and the torsional rigidity of the main body member 30 and the side member 40 (the cowl front 20) can be increased.

  The vertical wall portion 22 of the outer end portion in the vehicle width direction of the body member 30 of the cowl front 20 is formed in an inclined shape that moves forward as it moves upward, and the inclined wall portion 62 that inclines so that the connection bracket 60 moves forward as it moves downward. The side member 40 has an inner side portion in the vehicle width direction at the front side so that it can be connected to the outer end portion in the vehicle width direction of the vertical wall portion 22 of the main body member 30 of the cowl front 20 in a contact manner. A first inclined portion 42 that is inclined so as to shift to the front side, and a vehicle width direction outer side portion of the first inclined portion 42 is moved forward in the downward direction so as to be able to be coupled to the inclined wall portion 62 of the connecting bracket 60 in a contact manner. Since the inclined second inclined portion 43 is provided, the side member 40 can be reliably coupled to both the main body member 30 and the connection bracket 60.

  A node member 80 is provided to partition a closed cross-sectional space formed by the dash upper 15 including the dash upper extension 18, the cowl member 19, and the connection bracket 60, and the side member 40 is connected to the node member 80 via the connection bracket 60. Since the rigidity of the connecting bracket 60 is increased, the mounting strength of the side member 40 to the connecting bracket 60 is reliably increased, and the rigidity of the connecting bracket 60 is increased. When the attachment hinge 65 and the wiper attachment member 67 are attached, the support rigidity of the bonnet and the wiper can be more reliably increased.

  In addition, in the range which does not deviate from the gist of the present invention, various modifications other than the above disclosed matters can be added and implemented, and the longitudinal wall portions of both ends in the vehicle width direction extending upward from the front end of the lateral wall portion of the cowl front can be implemented. The present invention can be applied to a front body structure of an automobile in which the upper end is located above the suspension tower.

It is a perspective view from the front upper part of the front part vehicle body structure of a motor vehicle. It is a perspective view from the front upper part of the principal part of a front part vehicle body structure. It is a perspective view from the front upper part of the principal part of a front part vehicle body structure. It is a disassembled perspective view from the front upper part of the principal part of a front part vehicle body structure. It is a top view of the principal part of a front body structure. It is the sectional view on the AA line of FIG. FIG. 6 is a sectional view taken along line B-B in FIG. 5. It is CC sectional view taken on the line of FIG. It is a perspective view from the front upper direction of a connection bracket and a side member. It is a bottom view, such as a side member and a reinforcement bracket. It is a perspective view from below of a side member, a connection bracket, a node member, etc.

DESCRIPTION OF SYMBOLS 1 Front body structure 1a Engine room 1b Car compartment 5 Suspension tower 10 Dash lower 15 Dash upper 17 Rear vertical wall part 18 Dash upper extension part 19 Cowl member 20 Cowl front 21 Horizontal wall part 22 Vertical wall part 30 Main body member 40 Side member 41 Extension reinforcement part 42 1st inclination part 43 2nd inclination part 50 Brace member 52 Brace extension part 60 Connection bracket 62 Inclination wall part 70 Reinforcement bracket 80 Node member

Claims (5)

A dash lower for partitioning an engine room and a vehicle compartment of an automobile and a dash upper coupled to an upper end thereof, a cowl front coupled to a lower portion of the dash upper, a pair of left and right apron members, and a pair of left and right pillars The dash upper has a pair of left and right dash upper extensions extending forward at the bottom of both end portions in the vehicle width direction and coupled to the upper surfaces of the pair of left and right suspension towers, A front portion of an automobile in which a cowl front has a horizontal wall portion extending forward from the dash upper, and a vertical wall portion extending upward from the front end of the horizontal wall portion and having upper ends at both ends in the vehicle width direction positioned above the suspension tower. In the body structure,
A pair of left and right connecting brackets disposed above the pair of dash upper extensions, each having a cowl member coupled to a dash upper whose rear end is located above the upper surface of the suspension tower. A pair of left and right connecting brackets fixed to the rear vertical wall portion of the dash upper , the front end being connected to the upper surface of the suspension tower, and the vehicle width direction outer end portion being connected to the apron member connected to the pillar member With
The cowl front has a main body member disposed so as to bridge between the pair of dash upper extension portions, and an inner side portion in the vehicle width direction is fixed to both ends of the vertical wall portion of the main body member in the vehicle width direction. is and a 且 one vehicle width direction outer side portion of the right and left pair which is coupled to the connecting bracket of the pair side members, the side members of the vertical wall portion and a pair of left and right said body member The vertical wall portion of the cowl front is configured with
The side members may possess an extending reinforcing portion is coupled to the vehicle width direction end portion of the suspension tower extending forwardly thereunder,
The vertical wall portion of the outer end portion in the vehicle width direction of the main body member is formed in an inclined shape so as to move forward toward the upper side
The connecting bracket has an inclined wall portion that is inclined so as to move forward as it goes downward,
A first inclined portion that inclines so as to move forward in the vehicle width direction inner side portion of the side member so that it can be coupled to the outer end portion in the vehicle width direction of the vertical wall portion of the main body member so as to come into contact with each other. And a second inclined portion that is inclined so as to move forward in the downward direction so as to be able to be coupled to the inclined wall portion so as to be in contact with the inclined wall portion. The front body structure of the car. 2. The automobile according to claim 1 , further comprising a pair of left and right brace members that reinforce the upper surfaces of the pair of suspension towers, wherein the pair of extending reinforcing portions are coupled to the pair of brace members. Front car body structure. The automobile according to claim 2 , wherein the brace member has a brace extending portion extending inward in the vehicle width direction from the suspension tower, and an extending reinforcing portion is coupled to the brace extending portion. Front car body structure. And a pair of left and right reinforcing brackets coupled to a pair of brace members in superposition with the pair of extending reinforcing portions and coupled to a lower surface of a lateral wall portion of the main body member. Item 4. The front body structure of an automobile according to Item 2 or 3 . A node member for partitioning a closed cross-sectional space formed by the dash upper including the dash upper extension portion, the cowl member, and the connection bracket is provided, and the side member is coupled to the node member via the connection bracket. The front body structure of an automobile according to claim 1 , wherein the front body structure is an automobile.

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