JP2016064771A - Underrun protector attachment structure, underrun protector bracket, and underrun protector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the workability of attachment of an underrun protector.SOLUTION: An UP bracket 10 integrally has an attachment plate part 19 exposed in a fore and aft direction below a front end part of a vehicle body frame 3 and is fixed to the vehicle body frame 3. An attached surface 46 is fixedly provided at a long protector body 31 of a front underrun protector 30. The protector body 31 extends in a vehicle width direction below the front end part of the vehicle body frame 3 in an attachment state where the attached surface 46 makes surface contact with a front surface of the attachment plate part 19 and is fastened thereto. The attachment plate part 19 inclines to the front lower side.SELECTED DRAWING: Figure 2

Description

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

  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.

  Therefore, an object of the present invention is to provide an under-run protector mounting structure, an under-run protector bracket, and an under-run protector that can improve the mounting workability of the under-run protector.

  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 integrally has a mounting plate portion exposed in the front-rear direction below the front end portion or the rear end portion of the vehicle body frame, and is fixed to the vehicle 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 mounting plate portion is inclined toward the front lower side or the rear lower side.

  The underrun protector bracket according to the present invention includes a bracket body and a mounting plate portion. The bracket body is fixed to the front end portion or the rear end portion of the body frame and extends downward. The mounting plate is provided integrally with the bracket body and is exposed in the front-rear direction 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 mounting plate portion is inclined toward the front lower side or the rear lower side.

  The underrun protector according to the present invention includes a long protector body and a mounting bracket. The mounted bracket has a mounted surface disposed behind the rear surface or front surface of the protector body, and is fixed to the protector body. The protector body is attached to the front or rear surface of the mounting plate portion of the underrun protector bracket that is fixed to the front end portion or the rear end portion of the vehicle body frame with the surface to be attached being fastened and fixed. The vehicle extends in the vehicle width direction below the front end portion or the rear end portion. The mounting plate portion is inclined toward the front lower side or the rear lower side.

  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.

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

1 is an external side view of a vehicle provided with a mounting structure according to a first 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. It is a disassembled perspective view which shows the state before attaching the front underlamp protector which concerns on 2nd Embodiment of this invention to a vehicle body frame. It is a side view which shows the attachment state of the front under-run protector of FIG.

  Hereinafter, a first 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 backward. The lower part of the front edge of the side plate part 14 extends substantially vertically downward from the lower end of the upper part of the front edge. 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 attaching the surface portion 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.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the shapes of the FUP 60 and the UP bracket 50 are different from those of the first embodiment. In addition, about the structure which is common in 1st Embodiment, the same code | symbol is attached | subjected and the description is abbreviate | omitted.

  As shown in FIGS. 6 and 7, the UP bracket 50 integrally includes a bracket body 51 and an underlamp protector mounting portion (UP mounting portion) 52. The bracket body 51 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, and a bottom plate portion (not shown). 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 50 is fixed to the vehicle body frame 3 and extends downward.

  The UP mounting portion 52 integrally includes an upper vertical plate portion 53, a mounting plate portion 54, and a lower horizontal plate portion 55, and is fixed to the right side surface of the side plate portion 14 at the lower front end of the bracket body 51. The upper vertical plate portion 53 has a flat plate shape extending in a substantially vertical direction. The mounting plate portion 54 has a rectangular flat plate shape that is bent from the lower edge of the upper vertical plate portion 53 and extends obliquely toward the front lower side. The mounting plate portion 54 projects from the right side surface of the bracket body 51 (side plate portion 14) to the right below the vehicle body frame 3 and is exposed in the front-rear direction. A plurality of (four in this embodiment) bolt insertion holes 21 and 22 are formed in the mounting plate portion 54. 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. The lower horizontal plate portion 55 bends substantially horizontally from the lower edge of the mounting plate portion 54 and extends forward.

  Note that an opening hole or a notch for reducing the weight of the UP bracket 50 may be formed in the bracket main body 51 or the UP mounting portion 52.

  The FUP 60 integrally includes a protector main body 61 and left and right attached surfaces 62.

  The protector main body 61 has a long, substantially triangular tube shape integrally including a front surface portion 63, an upper surface portion 64, and a rear surface portion 65. Both the front surface portion 63 and the upper surface portion 64 are rectangular flat plate shapes, and the upper surface portion 64 bends substantially vertically from the upper end edge of the front surface portion 63 and extends rearward. The rear surface portion 65 includes an inclined surface portion 66, an upper connecting surface portion 67 that bends and extends from the upper end edge of the inclined surface portion 66, and a lower connecting surface portion 68 that bends and extends from the lower end edge of the inclined surface portion 66. The inclined surface portion 66, the upper connecting surface portion 67, and the lower connecting surface portion 68 are all rectangular flat plates. The upper connecting surface portion 67 extends substantially vertically downward from the rear end edge of the upper surface portion 64, and the lower connecting surface portion 68 extends rearward substantially horizontally from the lower end edge of the front surface portion 63. The inclined surface portion 66 constitutes a hypotenuse of a substantially right triangle facing the front surface portion 63 and the upper surface portion 64.

  A reinforcing plate 69 that reinforces the rear surface portion 65 by increasing the thickness of the rear surface portion 65 is fixed to a portion of the rear surface portion 65 of the protector main body 61 that is fixed to the UP bracket 50 in a state of surface contact with the rear surface portion 65. The reinforcing plate 69 is bent so as to come into surface contact with the inclined surface portion 66, the upper connecting surface portion 67, and the lower connecting surface portion 68, and the upper end portion of the reinforcing plate 69 is bent forward and brought into surface contact with the upper surface portion 64. The rear surface of the central region corresponding to the inclined surface portion 66 of the reinforcing plate 69 constitutes the attached surface 62.

  The bent shape of the front surface of the upper vertical plate portion 53, the mounting plate portion 54, and the lower horizontal plate portion 55 of the UP bracket 50 is formed in accordance with the bent shape of the rear surface of the reinforcing plate 69 of the FUP 60. The upper and lower portions of the reinforcing plate 69 are in surface contact with the upper vertical plate portion 53 and the lower horizontal plate portion 55, respectively, in a state where they are in surface contact with the front surface of the portion 54 from the front. Thus, in this embodiment, the cross-sectional shape of the protector main body 61 is made into the substantially triangular cylinder shape in which the inclined surface part 66 inclines forward and downward according to the inclination of the attachment board part 54 of UP bracket 50. FIG.

  The mounting surface 62 is formed with four bolt insertion holes 70 penetrating the reinforcing plate 69 and the inclined surface portion 66, and the inner surface of the inclined surface portion 66 is screwed with a bolt 71 inserted through the bolt insertion hole 70. 72 is fixed. The four bolt insertion holes 70 communicate with the four bolt insertion holes 21 and 22 of the mounting plate portion 54 in a state where the mounting surface 62 is overlapped at a predetermined position of the mounting plate portion 54 of the UP bracket 50. In this state, the bolt 71 is inserted from behind the bolt insertion holes 21, 22, screwed into the nut 72, and tightened, so that the FUP 60 is UP in a state where the mounted surface 62 is in surface contact with the front surface of the mounting plate portion 54. The protector body 61 is fastened to the bracket 50 and extends in the vehicle width direction below the front end of the body frame 3.

  When mounting the FUP 60 below the front end of the vehicle body frame 3, the mounting surface 62 fixedly provided on the FUP 60 is brought into surface contact with the mounting plate portion 54 of the UP bracket 50 from the front, and the bolts 71 are placed at four locations. The bolts are inserted into the bolt insertion holes 21, 22, and 70, and screwed into the nuts 72 to be tightened. In such attachment work, since the attachment plate portion 54 is inclined toward the front lower side, the bolt 71 may be fastened from the obliquely lower rear side of the attachment plate portion 54.

  Thus, since the FUP 60 is attached by fastening from one direction to the attachment plate portion 54, the attachment workability is improved.

  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-described embodiment, the FUPs 30 and 60 disposed below the front end portion of the vehicle 1 have been described as underrun protectors. However, the underrun protector is a rear underrun disposed below the rear end portion of the vehicle 1. A protector (RUP) 80 may be used (see FIG. 1). In the case of the RUP 80, the mounting plate portions of the UP brackets 10 and 50 are exposed in the front-rear direction below the rear end portion of the body frame 3, and are 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 brackets 10 and 50, so that the front side of the mounting plate portion. Tighten the bolt or 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, 50 Under-run protector bracket 11, 51 Bracket main body 12, 52 Under-run protector attachment part 17 Front plate part 17a Front surface (opposite surface) of front plate part
19, 54 Mounting plate 20 Mounting reinforcement 30, 60 Front underrun protector (underrun protector)
31, 61 Protector body 32 Mounted bracket 40 Mounted plate portion 46, 62 Mounted surface 63 Front surface portion 64 Top surface portion 66 Inclined surface portion 80 Rear underrun protector (underrun protector)

Claims (3)

An under-run protector bracket integrally having a mounting plate portion exposed in the front-rear direction below the front end portion or rear end portion of the body frame, and fixed to 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 mounting structure of the under-run protector, wherein the mounting plate portion is inclined toward the front lower side or the rear lower side. A bracket body that is fixed to the front end portion or the rear end portion of the body frame and extends downward;
A mounting plate provided integrally with the bracket body and exposed in the front-rear direction below the vehicle body frame;
In the mounted state in which the mounting surface fixedly provided on the long underrun protector is brought into surface contact with the front surface or the rear surface of the mounting plate portion and fastened and fixed, the underrun protector is attached to the front end portion or the rear portion of the vehicle body frame. It extends in the vehicle width direction below the end,
The under-run protector bracket, wherein the mounting plate portion is inclined toward the front lower side or the rear lower side. A long protector body,
A mounting bracket that has a mounting surface arranged behind the rear surface or front surface of the protector body, and is fixed to the protector body; and
In the mounted state in which the mounted surface is brought into surface contact with the mounting surface of the mounting plate portion of the under-run protector bracket fixed to the front end portion or the rear end portion of the vehicle body frame, and the protector body is fixed. Extending in the vehicle width direction below the front end or rear end of the body frame,
The mounting plate portion is inclined toward the front lower side or the rear lower side.

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