JP5228686B2 - Body front structure - Google Patents

Description

  The present invention relates to a front structure of a vehicle body in an automobile.

  A hood panel that covers the upper side of the engine room of an automobile so as to be openable and closable is generally configured to open and close the front end portion around a hinge portion provided at the rear end portion. The front end portion is detachably hooked on a hood lock provided on an upper member of a radiator core support disposed on the front side of the engine room.

  The radiator core support has an upper member and a lower member each extending in the vehicle width direction (see, for example, Patent Document 1).

The middle part of the upper member and the lower member in the vehicle width direction is connected by a stay, and a hood lock is attached via a bracket to the front part of the upper member to which the stay is coupled in the vehicle width direction. Yes.
JP 2001-18837 A

  However, in such a conventional front structure of the vehicle body, when the impact load input to the upper member is large when the hood panel is closed, the vehicle body front portion may vibrate or the upper member may be slightly deformed. Further, when the vehicle travels, the amount of twist deformation at the front of the vehicle body may increase due to the torsional load input to the vehicle body.

  Therefore, the present invention suppresses the vibration amount of the upper member when the hood panel is closed and the twist deformation amount of the front portion of the vehicle body that is input to the vehicle body when the vehicle is traveling by improving the rigidity of the front portion of the vehicle body. An object of the present invention is to provide a front structure for a vehicle body.

The present invention includes a radiator core support and a hood lock that detachably engages the front portion of the hood panel in the closed state, and the radiator core support is disposed below the front portion of the hood panel. An upper member extending in the width direction; a lower member disposed below the upper member and extending in the vehicle width direction; and a connecting member connecting the upper member and the lower member; and the hood lock is attached to the upper member The upper member is composed of an upper upper member and a lower upper member disposed on the lower side of the upper upper member. The upper and lower upper members are arranged on the lateral sides of the upper and lower upper members. The upper upper member and the lower upper member are coupled to the vehicle body parts, and the hood lock And or connected by gussets, the strut tower is provided in an engine room, combine the hood ridge members and side members to said strut tower, with coupling the ends of the upper-stage upper member to the front end portion of the hood ridge member, the The front end portion of the side member is coupled to the end portion of the lower upper member through the rain sludge core side, and the upper end of the rain sludge core side is coupled to the upper upper member .

  In the front structure of the vehicle body according to the present invention, the upper member is configured in two upper and lower stages from the upper upper member and the lower upper member disposed below the upper upper member. Compared to the upper member, the rigidity of the upper member is improved. Furthermore, since the left and right end portions of the upper and lower upper members are coupled to the vehicle body parts disposed on the side of the vehicle body, the rigidity of the upper member is further improved. Thus, by improving the rigidity of the upper member, the upper member does not vibrate greatly or undergoes slight deformation due to an impact load when the hood panel is closed. Even when a torsional load is input to the vehicle body when the vehicle is traveling, the torsional load can be efficiently absorbed.

  An embodiment of the present invention will be described with reference to the drawings. 1 is a perspective view showing a front portion of a vehicle body including a hood lock mounting structure for an automobile according to the present embodiment, FIG. 2 is an exploded perspective view of a portion X in FIG. 1, and FIG. It is the perspective view seen from.

  As shown in FIG. 1, a radiator core support 10 is provided at the front part of the engine room ER, and a radiator core (not shown) of a radiator is attached to the radiator core support 10. The radiator core is cooled by outside air introduced from the front grille (not shown) into the engine room ER. The radiator core support 10 is connected to the front side member 16 and the hood ridge member 17.

  The front side member 16 extends in the vehicle body front-rear direction on both sides of the engine room ER in the vehicle width direction.

  The hood ridge member 17 is positioned above the front side member 16 and extends in the front-rear direction of the vehicle body, and a rear base end portion of the vehicle is coupled to the front pillar 18. Further, an intermediate portion of the hood ridge member 17 and the front side member 16 are connected via a strut tower 19. That is, the upper portion of the strut tower 19 is coupled to the hood ridge member 17, and the lower portion of the strut tower 19 is coupled to the front side member 16. Further, the hood ridge member 17 is connected to the front side member 16 via a connection bracket 35.

  The radiator core support 10 has a substantially rectangular frame shape when viewed from the front, and the radiator core is disposed in the opening thereof. The radiator core support 10 is located below the front portion of the hood panel H (see FIG. 6) and extends in the vehicle width direction. The lower member 12 and the upper member 11 extend below the upper member 11 and extend in the vehicle width direction. And a pair of left and right connecting members 13 that connect the lower member 12 to each other.

  The upper member 11 is arranged on the upper side, and includes an upper upper member 11M including the radio core side 15 and a lower upper member 11S which is positioned below the upper upper member 11M and connected to the upper upper member 11M. The upper upper member 11M and the lower upper member 11S are arranged close to each other in the vertical direction. Then, both ends of the radio core side 15 constituting the upper upper member 11M in the vehicle width direction are joined to the front end of the hood ridge member 17, as shown in FIG.

  Further, both ends of the lower upper member 11S in the vehicle width direction are coupled to the front surface of the rain forage core side 14 extending in the vertical direction. The rain sludge core side 14 has an upper end coupled to the radio core side 15 and a lower end coupled to a bracket add-on frame 31. Thus, the rain sludge core side 14 connects the radio core side 15, the lower upper member 11S, and the bracket add-on frame 31 vertically. Further, the front end of the front side member 16 is coupled to the bracket add-on frame 31.

  Here, the connecting member 13 includes the rain sludge core side 14, the bracket add-on frame 31, and the connecting bracket 35, and the upper upper member 11M and the lower upper member 11S are connected to the lower member 12 through these.

  The connecting member 13 is provided only at both ends of the radiator core support 10 in the vehicle width direction. That is, the connecting member 13 is only a pair of left and right, and is not provided in the intermediate portion of the radiator core support 10 in the vehicle width direction.

  As shown in the exploded perspective view of FIG. 2, the hood ridge member 17 is formed with a bead 33 on the outer surface in the vehicle width direction along the vertical direction, and the bead 33 increases the rigidity. Since the hood ridge member 17 has a substantially U-shaped cross section, when it is joined to the support bracket 32 and the connecting bracket 35, a substantially rectangular opening is formed at the front end. The reinforcing bracket 34 is fitted into the opening, the upper flange 34 a of the reinforcing bracket 34 is joined to the distal end flange 17 a of the hood ridge member 17, and the lower flange 34 b is joined to the joining flange 35 a of the connecting bracket 35.

  4 is a perspective view of the upper member obtained by disassembling the upper and lower upper members, FIG. 5 is a cross-sectional view taken along the line AA in FIG. 1, and FIG. 6 is a cross-sectional view taken along the line BB in FIG. .

  First, as shown in FIGS. 4 and 6, the hood lock 20 is configured to detachably engage the front end portion Hf of the hood panel H. The hood lock 20 is fitted to a striker (not shown) of the hood panel H, and has a base plate 21 having a groove 21a provided with a hook (not shown) for hooking the striker, and is rotatable on the base plate 21. And a manual lever 22 attached to the. The manual lever 22 is integrally provided with a hook 22a that engages with a locking portion (not shown) of the hood panel H.

  When the hood panel H is closed, the hood lock 20 hooks the hood panel H by hooking a striker fitted in the groove 21a of the base plate 21 with a hook (not shown). When the hood panel H is opened, the hook 22a in which the manual lever 22 is manually rotated is released from the engaging portion of the hood panel H after releasing the hook between the striker and the hook by an operation from the room. By doing so, the lock | rock of the food panel H is cancelled | released.

  Furthermore, the upper upper member 11M and the lower upper member 11S are coupled via a pair of left and right gussets 37, 37. The gusset 37 includes an upper flange 37a disposed on the upper side and extending inward in the vehicle width direction, a lower flange 37c disposed on the lower side and extending inward in the vehicle width direction, The upper and lower flanges 37a and 37c are integrally formed from a vertical wall portion 37b that connects the upper and lower flanges 37c. That is, the upper flange 37a and the lower flange 37c in the gusset 37 on the left side of the vehicle extend toward the right side of the vehicle, and the upper flange 37a and the lower flange 37c in the gusset 37 on the right side of the vehicle extend toward the left side of the vehicle. Thus, as shown in FIGS. 5 and 6, the upper upper member 11M and the lower upper member 11S are connected by the gusset 37 formed in a substantially U shape when viewed from the front. Specifically, the gusset 37 is housed inside the upper upper member 11M, the upper flange 37a is joined to the upper surface of the upper upper member 11M, and the lower flange 37c is joined to the upper surface of the lower upper member 11S. Note that a pair of brackets 36 are attached to the left and right sides of the hood lock 20.

  Further, as shown in FIG. 5, a hood lock mounting surface 11a is formed on the front surface of the upper member 11 in the vehicle width direction, and a hood lock 20 is mounted on the hood lock mounting surface 11a. In this embodiment, the hood lock mounting surface 11a is formed on the upper upper member 11M. The hood lock 20 connects the upper upper member 11M and the lower upper member 11S.

  In this embodiment, the hood lock 20 is attached to the upper member 11 in a state where the hood lock 20 is in contact with the upper member 11. That is, in this embodiment, the hood lock 20 is directly attached to the upper member 11. Specifically, as shown in FIGS. 5 and 6, the hood lock 20 has an attachment flange portion 23 that abuts against the hood lock attachment surface 11 a on the back surface (the vehicle rear side surface). The mounting flange 23 is brought into contact with the hood lock mounting surface 11 a of the upper member 11 and is mounted with bolts 24.

  When the hood lock 20 is attached across the upper upper member 11M and the lower upper member 11S, a first connecting portion 21b is provided at the lower end of the base plate 21, as shown in FIG. A mounting bracket 25 for attaching a collision sensor (not shown) is joined to the front surface of the lower upper member 11S, and a second connecting portion 25a is provided above the mounting bracket 25.

  And the 1st connection part 21b and the 2nd connection part 25a are mutually connected through the volt | bolt 26 and the nut 26a, and the hood lock 20 is attached ranging over the upper stage upper member 11M and the lower stage upper member 11S. Can do.

  As shown by a two-dot chain line in FIG. 6, the hood panel H is arranged with its front end Hf wrapping around the front of the vehicle from the upper side of the hood lock 20. Therefore, the front end portion Hf of the hood panel H and the hood lock 20 are disposed to face each other in the vehicle front-rear direction. The hood lock mounting surface 11a formed on the upper upper member 11M of the upper member 11 is tilted forward by a predetermined angle θ. Due to the forward tilt of the hood lock mounting surface 11a, the hood lock 20 is entirely tilted forward. The forward tilt of the hood lock mounting surface 11a is a tilted state in which the upper end of the hood lock mounting surface 11a is positioned in front of the vehicle with respect to the lower end.

  In the present embodiment described above, the upper upper member 11M and the lower upper member 11S are coupled to separate vehicle body parts. Specifically, the left and right ends of the radio core side 15 which is a part of the upper upper member 11M are joined to the front end of the hood ridge member 17. On the other hand, the left and right ends of the lower upper member 11S are coupled to the front side member 16 via the rain slide core side 14. Therefore, the torsional load input to the vehicle body as the vehicle travels can be efficiently dispersed.

  In addition, since the upper upper member 11M and the lower upper member 11S are connected via the hood lock 20, the gusset 37, and the rain sludge core side 14, the rigidity of the upper member 11 including the upper upper member 11M and the lower upper member 11S. Can be improved.

  A strut tower 19 is provided in the engine room ER, and a hood ridge member 17 and a front side member 16 are coupled to the strut tower 19, and the end of the upper upper member 11M is connected to the front end of the hood ridge member 17. In addition, the front end of the front side member 16 is connected to the end of the lower upper member 11S through the rain slide core side 14. Therefore, the load input to the strut tower 19 during traveling of the vehicle is transmitted to the upper upper member 11M via the hood ridge member 17 and also from the front side member 16 to the lower upper member 11S via the rain slide core side 14. Communicated. As described above, since the load input to the strut tower 19 is distributed and transmitted to the upper upper member 11M and the lower upper member 11S, it is possible to suppress the torsional deformation of the vehicle body due to the input load.

  Further, since the hood lock 20 is attached to the upper member 11 in contact with the upper member 11, the hood lock 20 protrudes forward from the upper member 11 as compared with the structure in which the hood lock is spaced forward from the upper member. The amount can be reduced, and the degree of freedom in designing the front end portion Hf of the hood panel H can be improved accordingly.

  In the present embodiment, since the connecting members 13 are provided only at both ends in the vehicle width direction of the radiator core support 10, the connecting members 13 are provided at both ends in the vehicle width direction of the radiator core support 10 and at the center in the vehicle width direction. Compared with the case where it provides, the ventilation efficiency at the time of external air passing the radiator core support 10 improves, and the heat exchange efficiency of a radiator can be improved. Further, it is possible to improve the appearance when the radiator core support 10 is viewed from the front of the vehicle body through the bumper opening and the front grill (both not shown).

  In the present embodiment, the upper member 11 includes an upper upper member 11M and a lower upper member 11S that is positioned below the upper upper member 11M and connected to the upper upper member 11M. Therefore, since the upper member 11 has a two-stage structure, the rigidity of the upper member 11 can be increased, and consequently the support rigidity of the hood panel H on the upper member 11 can be increased.

  In this embodiment, since the hood lock 20 is attached across the upper upper member 11M and the lower upper member 11S, the hood lock 20 functions as a connecting member between the upper upper member 11M and the lower upper member 11S. For this reason, the rigidity of the upper member 11 can be further increased by increasing the connection rigidity between the upper upper member 11M and the lower upper member 11S.

  In the present embodiment, the upper member 11 has a hood lock mounting surface 11a with which the hood lock 20 abuts. The front end Hf of the hood panel H is turned forward from the upper side of the hood lock 20 to the front of the vehicle, and the front end Hf of the hood panel H and the hood lock 20 are opposed to each other in the vehicle front-rear direction, and the hood lock mounting surface. 11a is tilted forward. Therefore, the hood lock 20 can be tilted forward along with the forward tilt of the hood lock mounting surface 11a. For this reason, the clearance gap between the front-end part Hf of the hood panel H wrapping around from the upper side of the hood lock 20 to the front of the vehicle and facing the hood lock 20 and the lower end of the hood lock 20 can be enlarged. Therefore, the design freedom of the front end portion Hf of the hood panel H can be further improved.

  The present invention is not limited to this embodiment, and various other embodiments can be adopted without departing from the gist of the present invention.

It is a perspective view which shows the vehicle body front part containing the hood lock mounting structure of the motor vehicle concerning one Embodiment of this invention. It is a disassembled perspective view of the X section in FIG. It is the perspective view which looked at X section in Drawing 1 from diagonally back. It is a perspective view of the upper member which decomposed | disassembled the upper stage upper member and the lower stage upper member. It is sectional drawing along the AA line in FIG. It is sectional drawing along the BB line in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Radiator core support 11 Upper member 11a Hood lock mounting surface 11M Upper upper member 11S Lower upper member 12 Lower member 13 Connecting member 14 Rain thrust core side 16 Front side member (side member)
17 Hood Ridge Member 19 Strut Tower 20 Hood Lock 37 Gusset H Hood Panel Hf Front End of Food Panel

Claims (6)

An upper member disposed below the front portion of the hood panel in the closed state and extending in the vehicle width direction, a lower member disposed below the upper member and extending in the vehicle width direction, and connecting the upper member and the lower member A radiator core support having a connecting member to be connected;
A hood lock attached to the upper member and detachably hooking a front portion of the hood panel;
The front structure of the vehicle body with
The upper member is composed of an upper upper member and a lower upper member arranged on the lower side of the upper upper member in two upper and lower stages, and both left and right ends of the upper upper member and the lower upper member are disposed on the side of the vehicle body. Combined with body parts,
The upper and lower upper members are connected by the hood lock and / or gusset ,
A strut tower is provided in the engine room, and a hood ridge member and a side member are coupled to the strut tower,
The end portion of the upper upper member is coupled to the front end portion of the hood ridge member, and the front end portion of the side member is coupled to the end portion of the lower upper member via the rain sludge core side,
A front structure of a vehicle body, wherein an upper end of the rain sludge core side is coupled to the upper upper member .   2. The front structure of a vehicle body according to claim 1, wherein the upper upper member and the lower upper member are respectively coupled to separate vehicle body parts.   The front structure of a vehicle body according to claim 1 or 2, wherein the upper upper member and the lower upper member are connected to each other. The vehicle body front structure according to any one of claims 1 to 3 , wherein the hood lock is attached to the upper member in a state where the hood lock is in contact with the upper member. The vehicle body front structure according to any one of claims 1 to 4 , wherein the connecting member is provided at both ends of the radiator core support in the vehicle width direction. The upper member has a hood lock mounting surface with which the hood lock abuts,
The front end portion of the hood panel is turned forward from the upper side of the hood lock so that the front end portion of the hood panel and the hood lock are opposed to each other in the vehicle front-rear direction, and the hood lock mounting surface is inclined forward. The front part structure of a vehicle body according to any one of claims 1 to 5 , wherein

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