JP6024032B2 - Structure to prevent foreign matter from entering the front cross member - Google Patents

Description

  The present invention relates to a front cross member that supports an engine disposed on the front side of a vehicle body while supporting a suspension device on both right and left ends.

  In the front structure of the vehicle body, a front cross member is bridged between side members provided on both sides in the vehicle width direction, and the suspension device is supported on both ends of the front cross member in the vehicle width direction. There has been provided a suspension device having improved support rigidity.

  The front cross member employed in such a vehicle body front structure supports not only the suspension device described above but also a steering mechanism, a power source including an engine and a transmission, and the like.

  Further, the power source is disposed on the front side of the front cross member in the vehicle body, and is supported by the front cross member via a roll rod for suppressing vibration in the longitudinal direction of the vehicle body. On the other hand, in the front cross member, an opening is formed toward the front side of the vehicle body, and the rear end of the roll rod is swingably supported in the internal space through the opening.

  A conventional vehicle body front part structure as described above is disclosed in, for example, Patent Document 1.

JP 2012-106552 A

  However, when the front cross member is formed with an opening toward the front side of the vehicle body as in the conventional vehicle body front structure, foreign matter such as rainwater, snow, and pebbles may enter the internal space from the opening. There is. As described above, when foreign matter enters the front cross member, sliding failure of the roll rod and abnormal noise are caused.

  Accordingly, an object of the present invention is to solve the above-described problems, and to provide a foreign matter intrusion prevention structure for a front cross member that can prevent foreign matter from entering an internal space.

The foreign matter intrusion prevention structure for the front cross member according to the first invention for solving the above-mentioned problems is
A suspension device that supports the steering wheel of the vehicle is attached to both ends in the vehicle width direction, and a front cross member in which an opening communicating with the internal space is formed toward the front side of the vehicle body,
An engine provided on the vehicle body front side of the front cross member;
A roll that suppresses vibration of the engine in the front-rear direction of the vehicle body by having a front end supported by the engine in a swingable manner and a rear end supported in the inner space through the opening. The rod,
A cylindrical cover member whose outer surface is formed in a bellows shape while closing the opening by being attached to the opening edge of the opening with the roll rod penetrating therein ,
An engagement recess formed in the opening edge so as to be recessed toward the center position of the opening edge,
An engagement convex portion that is formed at the rear end opening of the cover member so as to protrude toward the center position of the rear end opening, and engages with the engagement concave portion.
The rear end opening is formed so as to be positioned closer to the center position of the rear end opening than the installation position of the engagement protrusion, and the opening edge is sandwiched between the engagement protrusion. And a clip portion .

A foreign matter intrusion prevention structure for a front cross member according to a second invention for solving the above-described problems is as follows.
A slit formed in the cover member and extending in the longitudinal direction of the vehicle body is provided.

  Therefore, according to the foreign matter intrusion prevention structure for the front cross member according to the present invention, the cylindrical cover member is attached to the opening edge portion of the opening portion with the roll rod penetrating the inner portion of the front cross member. It is possible to prevent foreign matter from entering the space. Thereby, the rocking | fluctuation defect of a roll rod in a front cross member and generation | occurrence | production of unusual noise can be prevented.

1 is a front perspective view of a foreign matter intrusion prevention structure for a front cross member according to an embodiment of the present invention. It is the front perspective view which showed the connection state of a front cross member and a roll rod. It is an upper perspective view of a cover member. It is a downward perspective view of a cover member. 3 is an enlarged view of an opening in a front cross member according to Embodiment 1. FIG. 6 is an enlarged view of a rear end opening in the cover member according to Embodiment 1. FIG. It is the longitudinal cross-sectional view which showed the engagement state of the opening edge part and cover member in Example 1. FIG. 6 is an enlarged view of an opening in a front cross member according to Embodiment 2. FIG. 6 is an enlarged view of a rear end opening in a cover member according to Embodiment 2. FIG. It is the longitudinal cross-sectional view which showed the engagement state of the opening edge part and cover member in Example 2. FIG.

  A foreign matter intrusion prevention structure for a front cross member according to the present invention will be described in detail with reference to the drawings.

  As shown in FIGS. 1 and 2, a hollow front cross member 10 is provided at the front of the vehicle body so as to extend in the vehicle width direction. A side member 31 is disposed above the front cross member 10. However, it is provided to extend in the longitudinal direction of the vehicle body at both sides in the vehicle width direction. And the front cross member 10 is supported by the lower surface of the side member 31 via the arm member 32 and the attaching part 10a which are provided in the vehicle width direction both ends.

  Further, lower arms 33 constituting the suspension device are supported at both ends in the vehicle width direction of the front cross member 10 so as to be swingable in the vertical direction. A front wheel 36 is rotatably supported via a knuckle (not shown). Thus, by supporting the suspension device on the front cross member 10 attached to the side member 31, the support rigidity of the suspension device is improved.

  Furthermore, an engine 34 is provided on the front side of the vehicle body of the front cross member 10, and the inside of the front cross member 10 and the lower surface of the engine 34 are connected by a plate-shaped roll rod 35. Bushes 35 a and 35 b are provided at the front end and the rear end of the roll rod 35.

In other words, the front end of the roll rod 35 is swingably connected to the engine 34 via the bush 35a, while the rear end of the roll rod 35 swings to the front cross member 10 via the rubber bush 35b. It is linked movably. In this way, by supporting the engine 34 to the front cross member 10 via the roll rod 35, the shake of the engine 34 in the longitudinal direction of the vehicle body is suppressed.

  Here, the front cross member 10 is configured such that an upper plate 11 disposed at an upper portion and a lower plate 12 disposed at a lower portion face each other in the vertical direction.

  The upper plate 11 has a box shape opened downward, and has a front wall portion 11a and a rear wall portion 11b. An opening 11 c is formed at the center in the vehicle width direction of the front wall portion 11 a so as to communicate with the internal space of the upper plate 11. On the other hand, the lower plate 12 is formed in a flat plate shape.

  Therefore, by joining the lower edge portions of the front wall portion 11a and the rear wall portion 11b in the upper plate 11 and the front edge portion and the rear edge portion of the lower plate 12 by welding or bolts, the front cross member 10 is obtained. The rectangular opening 21 is formed so as to communicate with the internal space of the front cross member 10. The rear end of the roll rod 35 is inserted into the opening 21, and the rear end of the roll rod 35 is, as described above, the inner surface (lower surface) of the upper plate 11 and the inner surface (upper surface) of the lower plate 12. ) To be swingable.

  The opening edge 22 of the opening 21 is formed by the opening edge of the opening 11c in the upper plate 11 and the front edge of the lower plate 12, and projects toward the front side of the vehicle body. Yes. A cylindrical cover member 40 is attached to the opening edge 22 so as to cover the opening 21 and the rear end side of the roll rod 35.

  As shown in FIGS. 3, 4, and 6, the cylindrical cover member 40 has a quadrangular pyramid shape in which the rectangular cross section gradually becomes smaller toward the front side of the vehicle body. That is, the front end opening 41 of the cover member 40 has an opening shape corresponding to the outer peripheral shape of the roll rod 35, and the rear end opening 42 of the cover member 40 is an opening corresponding to the outer peripheral shape of the opening edge portion 22. It has a shape.

  Furthermore, the upper inclined side surface 43a, the lower inclined side surface 43b, the left inclined side surface 43c, and the right inclined side surface 43d that constitute the outer surface of the cover member 40 are formed in a bellows shape. Among these, in the lower inclined wall portion 43B having the lower inclined side surface 43b, the slit 44 is formed over the entire area in the vehicle front-rear direction.

  As shown in FIG. 5, a plurality of engagement holes 23 are opened in the opening edge 22. On the other hand, as shown in FIG. 6, a plurality of engagement protrusions 45 are formed on the inner surface of the rear end opening 42 so as to protrude toward the inner center position.

  Therefore, when attaching the cover member 40, the cover member 40 is disposed so as to cover the rear end side of the opening 21 and the roll rod 35 while expanding the lower inclined wall portion 43 </ b> B using the slit 44. .

  Next, as shown in FIGS. 3 and 4, the front end opening 41 is fastened from the outside using a band 50 and attached to the rear end side of the roll rod 35. On the other hand, as shown in FIGS. 5 to 7, in the rear end opening portion 42, the engagement protrusion 45 is inserted into the engagement hole 23 of the opening edge portion 22 from the outside to the inside. The engagement hole 23 and the engagement protrusion 45 are engaged. Thereby, the opening 21 of the front cross member 10 is closed by the cover member 40.

  Note that the engagement form between the opening edge 22 of the front cross member 10 and the rear end opening 42 of the cover member 40 is not limited to the above-described one using the engagement hole 23 and the engagement protrusion 45, but other types. The engagement form may be adopted.

  For example, as shown in FIGS. 8 to 10, a plurality of engagement recesses 24 are formed in the opening edge 22 so as to be recessed toward the center position on the inside thereof. On the other hand, a plurality of engaging convex portions 46 are formed on the inner surface of the rear end opening portion 42 so as to protrude toward the center position on the inner side, and the sandwiching plate portion 47 is connected to the engaging convex portion 46. Opposing and formed on the center position side of the engaging convex portion 46.

  Therefore, when attaching the cover member 40, the opening edge portion 22 is inserted into the gap between the inclined side surfaces 43 a to 43 d and the sandwiching plate portion 47. Thereby, not only the engagement recessed part 24 and the engagement convex part 46 engage, but the engagement recessed part 24 is clamped by the engagement convex part 46 and the sandwiching plate part 47. Thereby, the opening 21 of the front cross member 10 is closed by the cover member 40.

  Therefore, according to the foreign matter intrusion prevention structure of the front cross member 10 according to the present invention, by attaching the cylindrical cover member 40 to the opening edge 22 of the opening 21 with the roll rod 35 penetrating, Intrusion of foreign matter (rain water, snow, pebbles, etc.) into the internal space of the front cross member 10 can be prevented. Thereby, the rocking | fluctuation defect of the roll rod 35 in the front cross member 10 and generation | occurrence | production of unusual noise can be prevented.

  Further, by forming the inclined side surfaces 43a to 43d of the cover member 40 in a bellows shape, the cover member 40 can be easily bent (bent). Accordingly, even if the roll rod 35 swings, the cover member 40 can follow the swinging operation. Therefore, even if the cover member 40 is attached, the roll rod 35 has a bad influence on the swinging operation. There is no effect.

  Furthermore, by forming the slit 44 in the front and rear of the vehicle body in the cover member 40, the cover member 40 can be expanded on both sides in the vehicle width direction. Thereby, even after the roll rod 35 is connected between the front cross member 10 and the engine 34, the cover member 40 can be easily attached.

  Still further, the engagement hole 23 or the engagement recess 24 is formed in the opening edge portion 22, while the engagement protrusion 45 or the engagement protrusion 46 and the sandwiching plate portion 47 are formed in the rear end opening portion 42. By enabling engagement, the cover member 40 can be easily attached to the front cross member 10.

  The present invention can be applied to a vehicle body structure for the purpose of preventing foreign matter from entering the front cross member.

DESCRIPTION OF SYMBOLS 10 Front cross member 11 Upper plate 11a Front wall part 11c Opening part 12 Lower plate 21 Opening part 22 Opening edge part 23 Engaging hole 24 Engaging recessed part 31 Side member 32 Arm member 33 Lower arm 34 Engine 35 Roll rod 36 Steering wheel 40 Cover Member 41 Front end opening 42 Rear end openings 43a to 43d Inclined side surface 43B Lower side wall 44 Slit 45 Engaging projection 46 Engaging projection 47 Nipping plate

Claims (2)

A suspension device that supports the steering wheel of the vehicle is attached to both ends in the vehicle width direction, and a front cross member in which an opening communicating with the internal space is formed toward the front side of the vehicle body,
An engine provided on the vehicle body front side of the front cross member;
A roll that suppresses vibration of the engine in the front-rear direction of the vehicle body by having a front end supported by the engine in a swingable manner and a rear end supported in the inner space through the opening. The rod,
A cylindrical cover member whose outer surface is formed in a bellows shape while closing the opening by being attached to the opening edge of the opening with the roll rod penetrating therein ,
An engagement recess formed in the opening edge so as to be recessed toward the center position of the opening edge,
An engagement convex portion that is formed at the rear end opening of the cover member so as to protrude toward the center position of the rear end opening, and engages with the engagement concave portion.
The rear end opening is formed so as to be positioned closer to the center position of the rear end opening than the installation position of the engagement protrusion, and the opening edge is sandwiched between the engagement protrusion. A structure for preventing foreign matter from entering the front cross member, characterized by comprising a pinching portion . In the foreign matter intrusion prevention structure of the front cross member according to claim 1,
A structure for preventing foreign matter from entering a front cross member, comprising a slit formed in the cover member and extending in the longitudinal direction of the vehicle body.

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