JP2017039420A - Fixing structure of step for movement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing structure of a step for movement which, even when the step for movement is installed to a fender and a load is applied to the step for movement, allows installation of the step for movement without applying the load to the fender.SOLUTION: A fixing structure of a step for movement is for installing a resin fender 17 to a lower part of a side of a cab body 10, embedding a resin step 20 for movement in an opening 23 formed in the fender 17 and fixing the upper edge of the step 20 for movement to the fender 17 with bolts 27. U-shaped cutouts 30, in each of which the bolt 27 is vertically movable, are formed in the fender 17. A retainer 32 is provided on the rear surface of the fender 17, and bolt holes 36 are formed in the retainer 32. The bolts 27 provided on the step 20 for movement are inserted in the bolt holes 36 of the retainer 32 through the U-shaped cutouts 30, and nuts 37 are screwed to the bolts 27 to fix the step 20 for movement to the retainer 32.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a fixing structure of a moving step for fixing a moving step for moving to a rear bodywork to a fender made of resin by attaching a resin fender to a lower side of a cab body of a large vehicle. is there.

  In recent years, resin molded products have come to be used for fenders under the entrance doors on the side of the cab body of large vehicle cabs for weight reduction, etc. Also, the moving step attached to the fender is also a resin molded product Is being used.

  When attaching a moving step to a fender, an opening for embedding the moving step is formed in the fender, the moving step is embedded in the opening, and the periphery of the moving step is fixed to the fender with a bolt or the like. The surface is supported by a metal bracket attached to the cab body so that an operator can get on the surface.

JP 2004-299574 A Japanese Patent Application Laid-Open No. 2001-301662 JP 09-142218 A Japanese Utility Model Publication No.59-083645

  However, even if the step surface of the moving step is supported by a metal bracket, the moving step is affected by the moment of transfer, so a moment force is involved between the moving step and the fixing part of the fender. There is a problem of deforming.

  Therefore, the object of the present invention is to fix the moving step that solves the above problems, attaches a moving step to the fender, and can attach the moving step without applying a load to the fender even if a load is applied to the moving step. To provide a structure.

  In order to achieve the above object, the present invention attaches a resin fender to the lower side of the cab body, embeds a resin moving step in an opening formed in the fender, and uses the upper edge of the moving step as a fender. In the fixing structure of the moving step for fixing with a bolt, the U-shaped notch that allows the bolt to move up and down is formed in the fender, a retainer is provided on the back surface of the fender, and a bolt hole is formed in the retainer, A bolt provided in the moving step is inserted into a bolt hole of the retainer through the U-shaped notch, and a nut is screwed into the bolt, and the moving step is fixed by the retainer. It is a fixed structure of the moving step.

  The moving step includes a step body having a step surface inserted into the opening, and a flange portion formed on the periphery of the step body and joined to the fender surface, and a lower portion of the step body is provided in the cab body. The flange is fixed to the support bracket, and the bolt is provided in the flange portion located at the upper portion of the opening, and a U-shaped notch having a lower end is formed in the upper portion of the opening portion of the fender, and is provided in the flange portion. It is preferable that the bolt is inserted into the bolt hole of the retainer through the U-shaped notch and fixed so that the fender is sandwiched between the flange portion and the retainer with the bolt and nut.

  A plurality of the bolts are provided at intervals along the flange portion located at the upper part of the opening, and a plurality of U-shaped notches are provided at intervals in the fender on the opening. It is preferable that a plurality of bolt holes are formed along the longitudinal direction of the retainer.

  In the present invention, the moving step is bolted with a retainer across the fender, so that the moving step can move up and down with respect to the fender, and even if a load is applied to the moving step, no load is applied to the fender. Demonstrate the excellent effect of preventing damage.

In this invention, it is a side view of the cab which attached the fender and the movement step to the cab body. In this invention, it is a detailed perspective view which attaches a fender and the step for a movement to a cab body. The fixed structure of the movement step of this invention is shown, (a) is the sectional view on the AA line of FIG. 1, (b) is the principal part assembly perspective view of the fixed structure of the movement step. It is an assembly perspective view which shows the fixing structure of the movement step of this invention.

  A preferred embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

  First, the side structure of the cab body 10 will be described with reference to FIG.

  As shown in FIG. 1, a closing 12 is attached to the front of the lower portion of the cab body 10, and an elevating step 14 is assembled.

  After the assembly of the closing 12 and the lifting step 14, a resin fender 17 including a front fender 15 and a rear fender 16 is attached to a fender bracket 18 provided on the cab body 10 as shown in FIG. 3.

  The moving step 20 is attached to the rear fender 16 of the fender 17 before the fender 17 is attached to the cab body 10.

  This moving step fixing structure will be described with reference to FIGS.

  The rear fender 16 is formed with an opening 23 for embedding the moving step 20.

  The moving step 20 includes a step body 25 having a step surface 24 fitted into the opening 23 and a flange portion 26 formed around the step body 25 and abutting against the surface of the rear fender 16 around the opening 23.

  As shown in FIG. 3A, the rear fender 16 is formed in a shape that bulges outward from the upper side to the lower side so that the lower edge is located on the outer side in the vehicle width direction with respect to the upper edge of the opening 23. When 20 is embedded in the opening 23, a space in which the upper side of the step surface 24 is opened is formed.

  A bolt 27 is supported on the upper portion of the flange portion 26 by a bolt support member 28, and a head portion of the bolt 27 is supported, and a screw portion of the bolt 27 is erected from the back surface of the flange portion 26.

  The rear fender 16 at the upper edge of the opening 23 is formed with a U-shaped notch 30 through which the bolt 27 can be inserted and the bolt 27 can move up and down. In the rear fender 16 in which the U-shaped notch 30 is formed, a recess 31 into which the bolt support member 28 is fitted is formed, and a U-shaped notch 30 whose lower side is opened is formed in the recess 31.

  On the rear surface of the rear fender 16, an elongated retainer 32 extending along the upper edge of the opening 23 is provided. The retainer 32 is formed with a box member 35 that accommodates the recess 31 on the rear surface of the rear fender 16, and a bolt hole 36 through which the bolt 27 is inserted is formed in the box member 35.

  A plurality of bolts 27 (three places in the figure) are provided at intervals along the upper portion of the flange portion 26 of the moving step 20 and the U-shaped cut formed on the upper edge of the rear fender 16. A plurality of recesses 31 having notches 30 are also formed along the upper edge of the opening 23 of the rear fender 16.

  In the retainer 32, a box member 35 having bolt holes 36 for accommodating the recesses 31 is formed at a plurality of intervals on a pressing plate 34 that is formed in an elongated shape so as to extend along the upper edge of the opening 23 of the rear fender 16. .

  As shown in FIGS. 3B and 4, the moving step 20 is attached to the opening 23 of the rear fender 16 by supporting a bolt 27 on the flange portion 26 of the moving step 20 with a bolt support member 28. In the state, the step body 25 is embedded in the opening 23. At this time, notches 38, 38 are formed on both sides of the lower edge of the opening 23 of the rear fender 16, and an engagement piece 39 that engages with the notch 38 is formed at the lower portion of the step surface 24 of the step body 25. By fitting the engagement piece 39 into the notch 38, the embedding position of the moving step 20 can be aligned.

  By this embedding, the bolt support member 28 fits into the recess 31 of the rear fender 16, and the bolt 27 protrudes from the U-shaped notch 30 of the recess 31. In this state, by placing the retainer 32 on the rear surface of the rear fender 16, the recess 31 of the rear fender 16 is accommodated in the box member 35 and the bolt 27 protrudes from the bolt hole 36 of the box member 35. By screwing the nut 37 into the bolt 27, the moving step 20 is held between the retainers 32 so as to sandwich the rear fender 16.

  Next, as shown in FIG. 2, the rear fender 16 and the front fender 15 are joined with a bolt or the like, and the fender 17 is attached to the lower edge of the cab body 10 and the fender bracket 18 provided on the cab body 10.

  At this time, the clip 41 is held by the clip support 40 on the rear fender 16 (the front fender 15 is the same), and the fender 17 is fitted to the cab body 10 by fitting into the grommet (not shown) on the lower edge of the cab body 10. 10 is fixed to the lower edge.

  As shown in FIG. 2, an L-shaped support bracket 45 that supports the step surface 24 of the moving step 20 is provided at the lower portion of the cab body 10, and the step surface 24 of the step body 25 is provided on the support bracket 45. Are supported by bolts 46 and nuts 47.

  Below the step surface 24, a reinforcing rib 48 seated on the support bracket 45 is formed, and a nut accommodating portion 49 for attaching the nut 47 is formed. As shown in FIG. 4, the nut 47 is fitted into the nut accommodating portion 49, and after the fender 17 is attached to the cab body 10, the bolt 46 is screwed into the nut 47 from below the support bracket 45 to move to the support bracket 45. The step surface 24 of step 20 is fixed.

  Next, the operation of the present embodiment will be described.

  When moving from the cab side to the bodywork via the moving step 20 provided on the fender 17, a load is applied to the moving step 20, but the load is supported by the support bracket 45 below the step surface 24. The At this time, the flange portion 26 of the moving step 20 is connected by the retainer 32, the bolt 27, and the nut 37 with the rear fender 16 interposed therebetween. However, the rear fender 16 has a U-shaped cutout that can move the bolt 27 up and down. Since the notch 30 is formed, the load is not applied to the rear fender 16 and the support bracket 45 can receive the load directly.

  Further, when a load is applied to the moving step 20, a moment is generated in the flange portion 26 at the upper part of the moving step 20 so as to be separated from the surface of the rear fender 16.

  At this time, the flange portion 26 at the upper part of the moving step 20 is connected to the retainer 32 and the bolts and nuts 27 and 37 with the rear fender 16 interposed therebetween, and the moment force applied to the flange portion 26 passes through the retainer 32. Thus, since the entire rear fender 16 is applied, it is possible to receive the force in a distributed manner as compared with the case where the rear fender 16 and the flange portion are directly supported by bolts and nuts, and deformation and breakage of the rear fender 16 can be prevented.

10 Cab body 17 Fender 20 Movement step 23 Opening 27 Bolt 30 U-shaped notch 32 Retainer 36 Bolt hole 37 Nut

Claims (3)

  Attach a resin fender to the bottom side of the cab body and embed a resin moving step in the opening formed in the fender, and fix the moving step to fix the upper edge of the moving step to the fender with a bolt. In the structure, a U-shaped notch that allows the bolt to move up and down is formed in the fender, a retainer is provided on the back surface of the fender, a bolt hole is formed in the retainer, and the bolt provided in the moving step is A structure for fixing a moving step, wherein the moving step is fixed by the retainer by inserting a nut into the bolt through the bolt hole of the retainer through a notch.   The moving step includes a step body having a step surface inserted into the opening, and a flange portion formed on the periphery of the step body and joined to the fender surface, and a lower portion of the step body is provided in the cab body. The bolt is provided at the flange portion fixed to the support bracket and located at the upper portion of the opening, a U-shaped notch having an open lower end is formed at the upper portion of the opening portion of the fender, and the bolt portion is formed at the flange portion. 2. The moving step fixing structure according to claim 1, wherein the fixing member is inserted into the bolt hole of the retainer through the U-shaped notch and fixed so that the fender is sandwiched between the flange portion and the retainer with the bolt and nut.   A plurality of the bolts are provided at intervals along the flange portion located at the upper part of the opening, and a plurality of U-shaped notches are provided at intervals in the fender on the opening. 3. The moving step fixing structure according to claim 2, wherein a plurality of bolt holes are formed along the longitudinal direction of the retainer.

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