JP6598055B2 - Insulator mounting structure - Google Patents

Description

  The present invention relates to a mounting structure for an insulator arranged along a lower surface of a floor panel of a cab.

  In Patent Document 1, a floor-back insulator mounting structure (insulator mounting structure) in which a front insulator (front insulator) and a rear insulator (rear insulator) are arranged along the lower surface of a cab floor (floor panel). Is described. In this insulator mounting structure, an overlap portion between the front insulator and the rear insulator is pressed by a retainer.

JP2015-120373A

  In the above conventional structure, since the retainer is used, the number of parts increases, which may lead to a decrease in workability and an increase in cost.

  Then, an object of this invention is to provide the attachment structure of the insulator which can suppress the increase in a number of parts, and the fall of workability | operativity.

  In order to achieve the above object, the insulator mounting structure of the first aspect of the present invention includes a front insulator and a rear insulator as insulators. The insulator is disposed along the lower surface of the floor panel of the cab. The rear insulator is disposed behind the front insulator, and at least a part of the front end portion overlaps at least a part of the rear end portion of the front insulator.

In the front insulator and the rear insulator, in the overlapping portion, the lower insulator is formed in a thin hard plate shape , an opening is formed in the upper insulator, and a convex portion protruding into the opening is formed in the lower insulator. The portions that are formed and the convex portions are fixed to the floor panel and are formed in a thin hard plate shape are fixed to the floor panel, so that the overlapping portions are held by the floor panel.

  In the above configuration, since the lower insulator is formed in a thin hard plate shape in the portion where the front insulator and the rear insulator overlap each other, the lower insulator does not hang down, and the retainer for preventing the insulator from hanging down Is unnecessary. For this reason, an increase in the number of parts and a decrease in workability can be suppressed.

The insulator mounting structure according to the second aspect of the present invention is the insulator mounting structure according to the first aspect, and the convex portion is fixed to the floor panel with a clip.

  In the above configuration, since the front insulator and the rear insulator overlap with each other, the protrusion formed in the lower insulator and projecting into the opening formed in the upper insulator is fixed to the floor panel with the clip. A clip having the same size (projection height) as a clip used for a portion where one insulator is fixed to the floor panel can be used in a portion where the two insulators are overlapped and fixed to the floor panel. As described above, since the clips can be shared, it is possible to suppress a decrease in workability.

  The insulator mounting structure according to the third aspect of the present invention is the insulator mounting structure according to the first aspect or the second aspect, wherein the front insulator and the rear insulator are curved in a portion overlapping each other. And is fixed to the floor panel in the vicinity of a pair of corner surfaces.

  According to the insulator mounting structure of the present invention, an increase in the number of parts and a decrease in workability can be suppressed.

It is the appearance perspective view which looked at the cab which adopted the attachment structure of the insulator concerning a 1st embodiment of the present invention from under the floor. It is sectional drawing which looked at the cab of FIG. 1 in the arrow II direction. It is sectional drawing which shows the state which the mounting structure of the insulator decomposed | disassembled. It is a top view of the attachment structure of an insulator. It is sectional drawing which shows the attachment structure of the insulator which concerns on 2nd Embodiment of this invention.

  Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings. In the figure, an arrow FR indicates the front of the vehicle 1 and an arrow UP indicates the upper side. In the following description, the front-rear direction means the front-rear direction of the vehicle 1, and the left-right direction means the left-right direction in a state of facing the front of the vehicle 1.

  A vehicle 1 shown in FIG. 1 is a cab-over type truck in which an engine room 3 (see FIG. 2) is located below a cab 2. The cab 2 is supported so as to be able to incline forward by a front cab mount (not shown) and a rear cab mount (not shown) attached to a front end portion of a vehicle body frame (not shown).

  The cab 2 is a substantially box-shaped body, and partitions the passenger compartment inside. The cab 2 includes a dash panel 4, a back panel 5, a side panel 6, a roof panel (not shown), a floor panel 7, and the like. These panels are made of a high-strength material such as a steel plate, for example, and are formed by press molding. Moreover, these panels are joined by spot welding or the like.

  The floor panel 7 is a substantially rectangular plate-like body, and includes a center floor panel portion 8, a pair of left and right floor protrusions 9, and a pair of left and right side floor panel portions 10. These are integrally formed by pressing or the like.

  As shown in FIGS. 1 and 2, the center floor panel portion 8 is formed at the center in the vehicle width direction and extends from the front end to the rear end of the floor panel 7. The center floor panel portion 8 has a center floor panel front portion 11 extending substantially horizontally from the front end of the floor panel 7 to the rear, a bent portion from the rear end of the center floor panel front portion 11 and extending obliquely upward, and a convex shape upward. The center floor panel inclined portion 12 curved so as to be integrated with the center floor panel rear portion 13 extending substantially horizontally to the rear end of the floor panel 7 continuously from the rear end of the center floor panel inclined portion 12. Have. Below the center floor panel portion 8 is formed an engine room 3 that houses an engine (not shown).

  As shown in FIG. 1, the floor protrusions 9 are formed in a pair on the left and right sides with the center floor panel portion 8 interposed therebetween, and extend from the front end to the rear end of the floor panel 7. The floor protrusion 9 has a U-shaped cross section and is formed to protrude downward. The side floor panel portion 10 is formed in a pair of left and right at both ends in the vehicle width direction with the center floor panel portion 8 and a pair of left and right floor protrusions 9 interposed therebetween, and extends from the front end to the rear end of the floor panel 7.

  As shown in FIGS. 1 and 2, an insulator 14 is disposed below the floor panel 7 along the lower surface of the center floor panel portion 8. The insulator 14 is a sound-absorbing material made of fiber, foamed synthetic resin, or the like, and is fixed to the floor panel 7 with the bracket 30 and the plurality of clips 27, so that the engine 14 (not shown) generates sound. Block the entry of. Specifically, the insulator 14 includes a front insulator 15 and a rear insulator 16 disposed behind the front insulator 15.

  The front insulator 15 includes a front insulator front portion 17 that extends substantially horizontally from the front to the rear along the lower surface of the center floor panel front portion 11 and a rear portion of the front insulator front portion 17 that extends along the lower surface of the center floor panel inclined portion 12. A front insulator corner portion (corner surface) 18 that is bent so as to bend from the end and extend obliquely upward and convex obliquely upward, and a front insulator corner portion along the lower surface of the rear portion 13 of the center floor panel A front insulator rear portion 19 is provided integrally with the rear end of 18 and extends substantially horizontally rearward.

  As shown in FIG. 2, a recess 20 that is recessed in a truncated cone shape is formed in the vicinity of the front insulator corner portion 18 on the lower surface of the front insulator front portion 17. A through hole 21 into which the shaft portion 28 of the clip 27 is inserted is formed in the approximate center of the recess 20.

  As shown in FIGS. 2 and 3, the front insulator corner portion 18 and the front insulator rear portion 19 are formed as a thin hard plate as a rear end portion of the front insulator 15 that vertically overlaps at least a part of the front end portion of the rear insulator 16. Is formed. The front insulator corner portion 18 has a shape that is curved so as to project obliquely upward, and overlaps with the rear insulator corner portion 25 that is a part of the front end portion of the rear insulator 16. The front insulator corner portion 18 and the rear insulator corner portion 25 constitute a pair of corner surfaces that overlap each other.

  As shown in FIGS. 2 to 4, the front insulator rear portion 19 overlaps the front side of the rear insulator rear portion 24 which is a part of the front end portion of the rear insulator 16. The front insulator rear portion 19 is formed with a truncated cone-shaped convex portion 22 projecting upward in the opening 26 formed in the rear insulator rear portion 24 in the vicinity of the front insulator corner portion 18. A through hole 23 into which the shaft portion 28 of the clip 27 is loosely inserted is formed in the approximate center of the convex portion 22.

  The rear insulator 16 includes a rear insulator rear portion 24 extending substantially horizontally from the rear to the front along the lower surface of the center floor panel rear portion 13 and a front end of the rear insulator rear portion 24 along the lower surface of the center floor panel inclined portion 12. And a rear insulator corner portion (corner surface) 25 that is bent so as to extend obliquely downward and project upward obliquely upward.

  The front side of the rear part 24 of the rear insulator, which is in the vicinity of the rear insulator corner part 25, is formed in a thin hard plate shape as a front end part of the rear insulator 16 that overlaps at least a part of the rear end part of the front insulator 15 in the vertical direction. . In the rear insulator rear portion 24, an opening 26 is formed in a portion formed in the shape of a thin hard plate in the vicinity of the rear insulator corner portion 25 so that the convex portion 22 of the front insulator 15 that overlaps the lower insulator protrudes from below. . The rear insulator corner portion 25 has a shape that is curved so as to protrude obliquely upward, and overlaps the front insulator corner portion 18 that is a part of the rear end portion of the front insulator 15.

  As shown in FIG. 2, in the front insulator 15, the shaft portion 28 of the clip 27 inserted into the through hole 21 from below is inserted into the fitting insertion hole 29 formed in the center floor panel front portion 11 of the floor panel 7 from below. The floor panel 7 is fixed by being inserted. As shown in FIGS. 2 to 4, the front insulator 15 and the rear insulator 16 are configured so that the shaft portion 28 of the clip 27 inserted from below into the through hole 23 formed in the convex portion 22 of the front insulator 15 has the floor panel 7. The projection 22 is fixed to the floor panel 7 with the clip 27 and the overlapping portions are held by the floor panel 7 by being inserted into the insertion holes 33 of the bracket 30 fixed to the lower surface of the rear portion 13 of the center floor panel. Is done.

  The bracket 30 is disposed below the center floor panel rear portion 13 so as to extend in the vehicle width direction, and is fixed to the front side of the lower surface of the center floor panel rear portion 13 by welding or the like. The bracket 30 has a U-shaped cross section and opens downward, a flange 32a bent from the lower front end of the bracket main body 31 and extending forward, and bent rearward from the lower lower end of the bracket main body 31 and extending rearward. A flange 32b is integrally provided. A fitting insertion hole 33 into which the shaft portion 28 of the clip 27 is inserted from below is formed in the flange 32b.

  As described above, in the present embodiment, the lower front insulator 15 hangs down because the lower front insulator 15 is formed in a thin hard plate shape in the overlapping portion of the front insulator 15 and the rear insulator 16. This eliminates the need for a retainer for preventing the insulator 14 from drooping. For this reason, an increase in the number of parts and a decrease in workability can be suppressed.

  Then, in a portion where the front insulator 15 and the rear insulator 16 overlap each other, a convex portion 22 formed in the lower front insulator 15 and projecting into the opening 26 formed in the upper rear insulator 16 is formed by the clip 27 on the floor. Since the two insulators 15 and 16 are overlapped and fixed to the floor panel 7 because they are fixed to the panel 7, the clip 27 used for the portion where the one insulator 15 or 16 is fixed to the floor panel 7 and A clip 27 having the same size (projection height) can be used. As described above, since the clips can be shared, it is possible to suppress a decrease in workability.

  Next, a second embodiment of the present invention will be described with reference to FIG. Note that the description of the same configuration as in the first embodiment is omitted.

  As shown in FIG. 5, the insulator mounting structure includes a front insulator 35 and a rear insulator 36 as the insulator 34. The front insulator 35 and the rear insulator 36 are formed in the shape of a thin hard plate, and overlap each other. The front insulator 35 is formed with a through hole 43 into which the shaft portion 48 of the clip 47 is gently inserted. In the rear insulator 36, a through hole 46 into which the shaft portion 48 of the clip 47 is gently inserted is formed at a position continuous with the through hole 43.

  The front insulator 35 and the rear insulator 36 are inserted into the through-hole 43 of the front insulator 35 from below and the shaft portion 48 of the clip 47 is inserted into the through-hole 46 of the rear insulator 36 from below. By being inserted into the 30 insertion holes 33, the overlapping portions are held on the floor panel (not shown).

  In each of the above embodiments, at least a part of the rear ends of the front insulators 15 and 35 overlaps at least a part of the front ends of the rear insulators 16 and 36. At least a part of the end part may overlap with at least a part of the front end part of the rear insulators 16 and 36.

  As mentioned above, although the embodiment to which the invention made by the present inventor is applied has been described, the present invention is not limited by the discussion and the drawings that form part of the disclosure of the present invention according to this embodiment. That is, it should be added that other embodiments, examples, operation techniques, and the like made by those skilled in the art based on this embodiment are all included in the scope of the present invention.

  The insulator mounting structure according to the present invention can be used for trucks and other cab-over type vehicles.

2 Cab 7 Floor panel 14 Insulator 15 Front insulator 16 Rear insulator 18 Front insulator corner (corner surface)
22 Convex 25 Rear insulator corner (corner surface)
26 Opening 27 Clip 34 Insulator 35 Front Insulator 36 Rear Insulator

Claims (3)

As an insulator disposed along the lower surface of the floor panel of the cab, the front insulator is disposed behind the front insulator, and at least a portion of the front end portion overlaps at least a portion of the rear end portion of the front insulator. With a rear insulator,
In the front insulator and the rear insulator, the lower insulator is formed in a thin hard plate shape in an overlapping portion, an opening is formed in the upper insulator, and the lower insulator is in the opening. The protruding portion is formed on the floor panel, and the portion formed in the shape of the thin hard plate is fixed to the floor panel so that the overlapping portions are An insulator mounting structure characterized by being held by a floor panel. As an insulator disposed along the lower surface of the floor panel of the cab, the front insulator is disposed behind the front insulator, and at least a portion of the front end portion overlaps at least a portion of the rear end portion of the front insulator. With a rear insulator,
In the front insulator and the rear insulator, the lower insulator is formed in a thin hard plate shape in an overlapping portion, an opening is formed in the upper insulator, and the lower insulator is in the opening. The protrusions are formed on the floor panel, and the protrusions are fixed to the floor panel with clips and the thin hard plate is fixed to the floor panel so that they overlap each other. Is held by the floor panel . An insulator mounting structure, wherein: An insulator mounting structure according to claim 1 or 2,
The front insulator and the rear insulator have a pair of curved corner surfaces that overlap each other, and are fixed to the floor panel in the vicinity of the pair of corner surfaces. Insulator mounting structure.

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