JP6459031B2 - Underrun protector mounting structure and underrun protector bracket - Google Patents

Description

  The present invention relates to a mounting structure for an underrun protector of a vehicle and an underrun protector bracket.

  In Patent Document 1, a front underrun protector support portion is provided on a front plate portion of a front underrun protector bracket, a front underrun protector bracket is fixed to a front end portion of a side member, and a front underrun protector support portion is provided with a front underrun protector support portion. A structure for fixing the protector is described. Further, in Patent Document 1, the front under-run protector support portion includes a vertical plate portion extending in the vertical direction and an upper plate portion extending forward from the upper portion of the vertical plate portion, and the vertical plate portion and the upper plate portion, A state in which the front underrun protector is supported is shown.

Japanese Patent No. 4919144

  In the structure of Patent Document 1, when the vertical plate portion and the upper plate portion of the front under-run protector support portion are fastened and fixed to the front under-run protector, the vertical plate portion is fastened from the rear and the horizontal plate portion is fastened upward. To do. Since fastening in two different directions is required in this way, the installation work of the front underrun protector is complicated.

  Accordingly, an object of the present invention is to provide an underrun protector mounting structure and an underrun protector bracket capable of improving the underrun protector mounting workability.

In order to achieve the above object, a mounting structure according to the present invention includes an underrun protector bracket and an underrun protector. The underrun protector bracket is fixed to the front end portion or the rear end portion of the vehicle body frame and extends downward, and the mounting plate portion fixed to the bracket main body and exposed in the front-rear direction below the vehicle body frame. Have. Bracket body has a facing surface which is exposed to the forward or backward under the front end or the rear end portion of the body frame. A mounting surface is fixedly provided on the long protector body of the underrun protector. The protector main body extends in the vehicle width direction below the front end portion or the rear end portion of the vehicle body frame in a mounted state in which the mounted surface is fastened in contact with the front surface or the rear surface of the mounting plate portion. The bracket body has a bracket side surface that intersects the vehicle width direction. The mounting plate portion is fixed to the side surface of the bracket in a posture inclined toward the front lower side or the rear lower side . The facing surface is slightly spaced rearward or forward from the mounted underrun protector and faces the underrun protector.

The underrun protector bracket according to the present invention includes a bracket body, a mounting plate portion, and an opposing surface. The bracket body is fixed to the front end portion or the rear end portion of the body frame and extends downward. Mounting plate portion is fixed against the bracket body, exposed in the front-rear direction below the body frame. The opposing surface is provided integrally with the bracket body and is exposed forward or backward below the body frame. With the mounting surface fixedly attached to the long underrun protector in contact with the front or rear surface of the mounting plate and fastened and fixed, the underrun protector is attached to the front end or rear end of the body frame. It extends in the vehicle width direction below. The bracket body has a bracket side surface that intersects the vehicle width direction. The mounting plate portion is fixed to the side surface of the bracket in a posture inclined toward the front lower side or the rear lower side . The facing surface is slightly spaced rearward or forward from the mounted underrun protector and faces the underrun protector.

  In the above configuration, when the underrun protector is installed below the front end of the body frame, the mounting surface fixedly provided on the underrun protector is brought into surface contact with the front surface of the mounting plate portion of the underrun protector bracket. Tighten the bolt or nut from the rear side of the plate. In such attachment work, since the attachment plate part is inclined toward the front lower side, a bolt or a nut may be fastened from the obliquely lower rear side of the attachment plate part. Also, when installing the under-run protector below the rear end of the body frame, the mounting surface fixedly provided on the under-run protector is brought into surface contact with the rear surface of the mounting plate portion of the under-run protector bracket. Tighten the bolt or nut from the front side of the part. In such attachment work, since the attachment plate portion is inclined rearward and downward, a bolt or a nut may be fastened from the diagonally lower front of the attachment plate portion.

  Thus, since an under-run protector is attached by the fastening from one direction with respect to an attachment board part, attachment workability | operativity improves.

  In addition, the under lamp protector bracket is provided with a facing surface facing the under lamp protector at a distance slightly rearward or forward from the mounted under lamp protector. When the under-run protector collides and moves while being pushed rearward or forward, the under-run protector comes into contact with the opposing surface of the under-run protector bracket, and the movement of the under-run protector is restricted by the under-run protector bracket. Thus, since the impact load acting on the under lamp protector is input to the vehicle body frame via the under lamp protector bracket from both the mounting plate portion and the opposing surface, the mounting strength of the under lamp protector can be increased. .

  In addition, since the opposing surface portion is separated rearward or forward from the attached under-run protector, the under-run protector does not interfere with the opposing surface portion during the installation of the under-run protector, and the under-lamp protector is caused by the opposing surface portion. Installation workability is not reduced.

  According to the present invention, it is possible to improve the mounting workability of the underrun protector.

It is an external appearance side view of a vehicle provided with the attachment structure concerning one embodiment of the present invention. It is a disassembled perspective view which shows the state before attaching the front under-run protector of FIG. 1 to a vehicle body frame. It is a side view which shows the attachment state of the front under-run protector of FIG. It is a perspective view of the underrun protector bracket of FIG. It is sectional drawing which shows the attachment state of the front under-run protector of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. In the figure, FR indicates the front of the vehicle, UP in the figure indicates the upper side of the vehicle, and IN in the figure indicates the inner side in the vehicle width direction. Moreover, the left-right direction in the following description is the left-right direction in the state which faced the vehicle front.

  As shown in FIG. 1, the vehicle 1 according to the present embodiment is a cab-over type vehicle in which the cab 2 is positioned in front of the engine (not shown).

  The vehicle body frame 3 of the vehicle 1 includes left and right side members 4 (only the left side is shown in FIG. 1 and only the right side is shown in FIGS. 2 and 3) and a plurality of cross members (not shown). The left and right side members 4 are disposed on both the left and right sides in the vehicle width direction and extend in the vehicle front-rear direction. As shown in FIGS. 2 and 3, each side member 4 has a substantially U-shaped cross section and includes a side wall portion 5, an upper wall portion 6, and a lower wall portion 7. The upper wall portion 6 and the lower wall portion 7 extend opposite to each other from the upper and lower ends of the side wall portion 5 toward the inner side in the vehicle width direction. Each cross member has both ends joined to the left and right side members 4 to connect the side members 4 to each other.

  An under-run protector bracket (UP bracket) 10 for supporting a front under-run protector (FUP) 30 is fixed to the front end portions of the left and right side members 4. The FUP 30 supported by the UP bracket 10 extends in the vehicle width direction below the front end portion of the vehicle body frame 3, and when another vehicle collides from the front of the vehicle 1, the other vehicle swoops below the vehicle 1. To prevent. Since the left and right UP brackets 10 are substantially bilaterally symmetrical with respect to the center of the vehicle 1 in the vehicle width direction, one (right side) will be described below, and the other (left side) will be omitted as appropriate.

  As shown in FIGS. 2 to 5, the UP bracket 10 integrally includes a bracket body 11 and an underlamp protector mounting portion (UP mounting portion) 12.

  The bracket body 11 integrally includes an upper plate portion 13, a pair of left and right side plate portions 14, an upper back plate portion 15, a lower back plate portion 16, a front plate portion 17, and a bottom plate portion 18. The upper plate portion 13 has a rectangular plate shape in surface contact with the lower surface of the lower wall portion 7 of the side member 4. The left and right side plate portions 14 are respectively fixed to the left and right side edge portions of the lower surface of the upper plate portion 13 and extend downward. The left and right side plate portions 14 are spaced apart from each other in the vehicle width direction and face each other substantially parallel. The upper part of the front edge of the side plate part 14 extends vertically downward from the front end part of the upper plate part 13 and then bends and extends rearward. Extend. The rear edge upper portion of the side plate portion 14 extends substantially vertically downward from the rear end portion of the upper plate portion 13, and the rear edge lower portion of the side plate portion 14 extends obliquely downward from the lower end of the rear edge upper portion. The front plate portion 17 is fixed to the lower portion of the front edge of the left and right side plate portions 14 and connects the front edges of the left and right side plate portions 14. A front surface (opposing surface) 17 a of the front plate portion 17 is exposed forward under the body frame 3. The upper back plate portion 15 extends from the rear end edge of the upper plate portion 13 so as to be bent substantially vertically downward, and the lower back plate portion 16 extends from the lower end edge of the upper back plate portion 15 so as to be bent forward and downward. The upper back plate 15 is fixed to the upper rear edge of the left and right side plate 14 and connects the upper rear edge of the left and right side plate 14. The lower back plate portion 16 is fixed to the lower rear edge portions of the left and right side plate portions 14, and connects the lower rear edge portions of the left and right side plate portions 14. The left and right side edges of the bottom plate portion 18 are fixed to the lower portions of the left and right side plate portions 14 to connect the lower portions of the side plate portions 14. When the upper plate portion 13 is fastened to the lower wall portion 7 of the side member 4 with bolts and nuts (not shown), the UP bracket 10 is fixed to the vehicle body frame 3 and extends downward.

  The UP mounting portion 12 integrally includes a mounting plate portion 19 and a mounting reinforcing portion 20, and is fixed to the outer surface of the side plate portion 14 on the right side (vehicle width direction outer side) of the bracket body 11.

  The mounting plate portion 19 is a rectangular flat plate that is inclined forward and downward and exposed in the front-rear direction, and protrudes to the right from the right side surface of the bracket body 11 (side plate portion 14) below the body frame 3. The mounting reinforcement portion 20 is a plate body bent in a U shape so that the right side is open, and the left side surface of the mounting reinforcement portion 20 is fixed in surface contact with the right side surface of the bracket body 11. The mounting plate portion 19 is abutted and fixed to the front end edge portion of the mounting reinforcing portion 20 from the front, and a plurality (four in this embodiment) of bolt insertion holes 21 and 22 are formed in the mounting plate portion 19. . Of the four bolt insertion holes 21 and 22, one bolt insertion hole 21 is a circular hole for positioning, and the other three bolt insertion holes 22 are long holes that allow displacement due to assembly errors.

  In addition, you may form the opening hole, notch, etc. for weight reduction of the UP bracket 10 in the bracket main body 11 or the UP attachment part 12. FIG.

  The FUP 30 includes a protector body 31 and left and right attached brackets 32.

  The protector main body 31 has a long rectangular tube shape, the front surface portion 33 and the rear surface portion 34 facing each other substantially in parallel, and the upper surface portion 35 that connects the upper end edge of the front surface portion 33 and the upper end edge of the rear surface portion 34. The lower surface portion 36 that integrally connects the lower end edge of the front surface portion 33 and the lower end edge of the rear surface portion 34 is integrally provided.

  The mounted bracket 32 integrally includes a mounted portion main body 37 and a pair of left and right reinforcing plate portions 38.

  The attached portion main body 37 is a plate body bent in a U shape so that the front is open, and is attached to the upper fixed plate portion 39 and the attached plate that is bent from the rear end edge of the upper fixed plate portion 39 and extends downward. The portion 40 and a lower fixing plate portion 41 that bends from the lower end edge of the attached plate portion 40 and extends forward are integrally provided. The upper fixing plate portion 39 is fastened and fixed to the upper surface portion 35 of the protector main body 31 by bolts 42 and nuts 43, and the lower fixing plate portion 41 is fastened and fixed to the lower surface portion 36 of the protector main body 31 by bolts 44 and nuts 45. . In the fixed state of the attached portion main body 37, the attached plate portion 40 is inclined forward and downward with respect to the rear surface portion 34 of the protector main body 31, and the rear surface of the attached plate portion 40 is the rear surface portion 34 of the protector main body 31. A mounted surface 46 is formed rearward of the mounting surface 46. The left and right reinforcing plate portions 38 are disposed between the front surface of the attached plate portion 40 and the rear surface portion 34 of the protector main body 31, and are respectively fixed to the left and right sides of the attached portion main body 37. The rear end edge of the reinforcing plate portion 38 is fixed to the front surface of the attached plate portion 40, and the front end edge of the reinforcing plate portion 38 is close to or in contact with the rear surface portion 34 of the protector body 31. In this state, the left and right reinforcing plate portions 38 respectively close the left and right openings of the space formed between the attached portion main body 37 and the rear surface portion 34 of the protector main body 31.

  Four stud bolts 47 protruding rearward are fixed to the mounted plate portion 40. Four stud bolts 47 are respectively inserted into the four bolt insertion holes 21 and 22 of the mounting plate portion 19 of the UP bracket 10, and a nut 48 is screwed and tightened from the tip of the stud bolt 47, thereby mounting the surface to be attached. The FUP 30 is fastened and fixed to the UP bracket 10 with the surface 46 in surface contact with the front surface of the mounting plate portion 19, and the protector body 31 extends in the vehicle width direction below the front end portion of the body frame 3. In the mounted state of the FUP 30, the front surface 17 a of the front plate portion 17 of the UP bracket 10 is slightly spaced rearward from the rear surface portion 34 of the protector main body 31 and faces the protector main body 31. (See FIG. 5) is formed.

  Instead of the stud bolt 47, a bolt insertion hole is formed in the mounted plate portion 40, a nut is fixed inside the mounted plate portion 40, and the bolt is inserted through the mounting plate portion 19 and the mounted plate portion 40. The FUP 30 may be fastened and fixed to the UP bracket 10 by screwing the inserted bolt into the nut.

  When mounting the FUP 30 below the front end of the vehicle body frame 3, four stud bolts 47 protruding from the mounting surface 46 fixedly provided on the FUP 30 are inserted into the four bolt insertion holes 21 and 22 of the UP bracket 10. The surface to be attached 46 on the FUP 30 side is brought into surface contact with the front surface of the mounting plate portion 19 of the UP bracket 10, and a nut 48 is screwed onto the stud bolt 47 from the rear surface side of the mounting plate portion 19 and tightened. In such attachment work, since the attachment plate portion 19 is inclined toward the front lower side, the nut 48 may be fastened from the obliquely lower rear side of the attachment plate portion 19.

  Thus, since the FUP 30 is attached by fastening from one direction to the attachment plate portion 19, the attachment workability is improved.

  Further, the UP bracket 10 is provided with a facing surface 17a that is slightly spaced rearward from the rear surface portion 34 of the protector main body 31 of the attached FUP 30 and faces the rear surface of the rear surface portion 34. For this reason, when another vehicle collides from the front of the vehicle 1 and the FUP 30 is pressed and moved rearward, the protector body 31 comes into contact with the opposing surface 17a of the UP bracket 10, and the movement (retreat) of the FUP 30 is UP. It is regulated by the bracket 10. In this manner, the impact load acting on the FUP 30 is input to the vehicle body frame 3 via the UP bracket 10 from both the mounting plate portion 19 and the facing surface 17a, so that the mounting strength of the FUP 30 can be increased.

  Further, since the facing surface portion 17a is separated rearward from the mounted FUP 30 (the protector body 31), the FUP 30 does not interfere with the facing surface portion 17a during the mounting operation of the FUP 30, and the mounting operation of the FUP 30 is caused by the facing surface portion 17a. There is no decline in sex.

  As mentioned above, although embodiment which applied the invention made | formed by this inventor was described, this invention is not limited with the description and drawing which make a part of indication of this invention by the said embodiment. That is, it is needless to say that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on the above-described embodiments are all included in the scope of the present invention.

  For example, in the above embodiment, the FUP 30 disposed below the front end of the vehicle 1 has been described as the underrun protector. However, the underrun protector is a rear underrun protector (located below the rear end of the vehicle 1). RUP) 80 (see FIG. 1). In the case of the RUP 80, the mounting plate portion of the UP bracket 10 is exposed in the front-rear direction below the rear end portion of the body frame 3 and is inclined toward the rear lower portion. When mounting the RUP 80 below the rear end portion of the vehicle body frame 3, the mounting surface fixedly provided on the RUP 80 is brought into surface contact with the rear surface of the mounting plate portion of the UP bracket 10, and bolts are mounted from the front side of the mounting plate portion. Or tighten the nut. In such attachment work, since the attachment plate portion is inclined rearward and downward, a bolt or a nut may be fastened from the diagonally lower front of the attachment plate portion.

  The present invention is widely applicable to vehicles equipped with an underrun protector.

DESCRIPTION OF SYMBOLS 1 Vehicle 3 Body frame 10 Under-run protector bracket 11 Bracket main body 12 Under-run protector mounting part 17 Front plate part 17a Front plate front surface (opposing surface)
19 Mounting plate 20 Mounting reinforcement 30 Front underrun protector (underrun protector)
31 Protector body 32 Mounted bracket 40 Mounted plate portion 46 Mounted surface 80 Rear underrun protector (underrun protector)

Claims (2)

Has a bracket body extending downward is fixed to the front end or the rear end portion of the body frame, fixed relative to the bracket body, and a mounting plate portion exposed in the front-rear direction below the body frame, the The underbody protector bracket has a facing surface exposed forward or backward under the front end or rear end of the body frame;
A mounting surface is fixedly provided on an elongated protector body, and the protector body is mounted on the vehicle body frame in a mounting state in which the mounting surface is fixed in contact with the front surface or the rear surface of the mounting plate. An underrun protector extending in the vehicle width direction below the front end or rear end of
The bracket body has a bracket side surface that intersects the vehicle width direction,
The mounting plate portion is fixed to the side surface of the bracket in a posture inclined toward the front lower side or the rear lower side,
The mounting structure for an underrun protector, wherein the facing surface is slightly spaced rearward or forward from the underrun protector in the mounted state and faces the underrun protector. A bracket body that is fixed to the front end portion or the rear end portion of the body frame and extends downward;
Said fixed against the bracket body, the mounting plate portion exposed in the front-rear direction below the body frame,
Provided integrally with the bracket main body, and exposed to the front or rear below the body frame,
With the mounting surface fixedly provided on the long under-run protector in contact with the front or rear surface of the mounting plate and fastened and fixed, the under-run protector is mounted on the front end or rear of the vehicle body frame. It extends in the vehicle width direction below the end,
The bracket body has a bracket side surface that intersects the vehicle width direction,
The mounting plate portion is fixed to the side surface of the bracket in a posture inclined toward the front lower side or the rear lower side ,
The under-run protector bracket, wherein the facing surface is opposed to the under-run protector at a distance slightly rearward or forward from the mounted under-run protector.

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