Patent Publication Number: US-2022234523-A1

Title: Vehicle floor structure

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     Priority is claimed on Japanese Patent Application No. 2021-009531, filed on Jan. 25, 2021, the contents of which are incorporated herein by reference. 
     BACKGROUND 
     Field of the Invention 
     The present invention relates to a vehicle floor structure. 
     Background 
     As a vehicle floor structure, a structure is known which is laid in two layers by providing a vibration-damping material sheet (hereinafter, referred to as an insulator) on a floor panel and providing a floor carpet on the insulator. According to the vehicle floor structure, a stay is provided on a convex wall surface part of the floor panel, and an insertion groove is formed between the stay and the convex wall surface part. An edge part of the insulator is inserted in the insertion groove, and thereby, the insulator is held (fixed) in a state of being positioned relative to the floor panel. 
     A protrusion is formed on a side sill side of the floor panel on an outside in a vehicle width direction, and a hook of the floor carpet is engaged with the protrusion. A side sill scuff is fitted to the hook of the floor carpet, and thereby, the floor carpet is held (fixed) in a state of being positioned relative to the insulator (for example, refer to Japanese Unexamined Utility Model Application, First Publication No. H5-86673). 
     SUMMARY 
     In the vehicle floor structure of Japanese Unexamined Utility Model Application, First Publication No. H5-86673, two members such as the stay and the side sill scuff are required in order to lay the insulator and the floor carpet on the floor panel in two layers, respectively. Therefore, the number of members for holding (fixing) is increased, and there is room for improvement from this point of view. 
     An object of an aspect of the present invention is to provide a vehicle floor structure capable of reducing the number of members required for providing an insulator and a floor carpet in two layers on a floor panel. 
     A vehicle floor structure according to a first aspect of the present invention is a vehicle floor structure in which an insulator is arranged on a floor of a vehicle and a floor carpet is arranged on the insulator, the structure including: an attachment member that fixes the insulator to a vehicle body side, wherein the attachment member includes a fixation part that fixes the floor carpet. 
     According to this configuration, the attachment member that fixes the insulator to the vehicle body side is provided, the fixation part is formed on the attachment member, and the floor carpet is fixed by the fixation part. In this way, by forming the fixation part on the attachment member, the insulator and the floor carpet can be fixed in two layers by one attachment member. Thereby, for example, it is possible to reduce the number of members required for providing the insulator and the floor carpet in two layers on the floor panel. 
     In a vehicle floor structure according to a second aspect, the attachment member may include a harness protection part that protects a wire harness. 
     According to this configuration, a harness protection part is formed on the attachment member, and the wire harness is protected by the harness protection part. Accordingly, the attachment member also serves as a protection member of the wire harness. Thereby, for example, it is possible to eliminate a dedicated member such as a corrugated tube that is conventionally required for protecting the wire harness. 
     In a vehicle floor structure according to a third aspect, the attachment member may include a regulation part that regulates a position of the floor carpet. 
     According to this configuration, the regulation part is formed on the attachment member, and the position of the floor carpet is regulated by the regulation part. Thereby, for example, even when the floor carpet is stepped on by an occupant and is about to be slightly displaced, it is possible to regulate the movement (displacement) of the floor carpet by the regulation part. 
     According to an aspect of the present invention, the attachment member that fixes the insulator to the vehicle body side is provided, and the floor carpet is fixed by the fixation part of the attachment member. Thereby, it is possible to reduce the number of members required for providing the insulator and the floor carpet in two layers on the floor panel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a vehicle that includes a vehicle floor structure according to an embodiment of the present invention when seen from a vehicle room side. 
         FIG. 2  is a cross-sectional view of the vehicle of  FIG. 1  when seen from an arrow A direction. 
         FIG. 3  is a cross-sectional view showing a vehicle floor structure of the embodiment. 
         FIG. 4  is an exploded perspective view in which an insulator and a floor carpet of the embodiment are disassembled. 
         FIG. 5  is a cross-sectional view along a V-V line of  FIG. 1 . 
         FIG. 6  is an enlarged perspective view of a VI region of  FIG. 4 . 
         FIG. 7  is a perspective view showing an example in which the floor carpet is fixed to a first attachment member of the embodiment. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     Hereinafter, a vehicle floor structure  20  according to an embodiment of the present invention will be described with reference to the drawings. In the drawings, an arrow FR indicates a frontward direction of a vehicle, an arrow UP indicates an upward direction of the vehicle, and an arrow LH indicates a leftward direction of the vehicle. A vehicle Ve and the vehicle floor structure  20  have a substantially symmetrical configuration in a right-to-left direction, and by giving the same reference numeral to right and left components, the right component is described in detail. 
     &lt;Vehicle Ve&gt; 
       FIG. 1  is a perspective view of the vehicle Ve that includes the vehicle floor structure  20  of the embodiment when seen from a vehicle room side.  FIG. 2  is a cross-sectional view of the vehicle Ve of  FIG. 1  when seen from an arrow A direction.  FIG. 3  is a cross-sectional view showing the vehicle floor structure  20  of the embodiment. 
     As shown in  FIG. 1 , the vehicle Ve includes, for example, a side sill  12 , a step garnish  14 , a floor panel  16 , and the vehicle floor structure  20 . 
     The side sill  12  is arranged on right and left outer sides in a vehicle width direction and extends in a vehicle body front-to-rear direction. The side sill  12  includes, for example, a side sill sidewall  12   a  and a side sill bottom part  12   b.  The side sill  12  is formed, for example, of the side sill sidewall  12   a  and the side sill bottom part  12   b  in an L shape in cross section. A step garnish  14  is attached to the side sill  12 . 
     The step garnish  14  includes a step part  22  and a step attachment part  23 . 
     The step part  22  extends in the vehicle body front-to-rear direction along and above the side sill  12  and is arranged horizontally. The step part  22  includes a first protrusion portion  22   a,  a second protrusion portion  22   b,  and a rib  22   c.  The first protrusion portion  22   a  is a region that forms an outer side of the step part  22  and protrudes downward. The second protrusion portion  22   b  is a region that forms an inner side of the step part  22  and protrudes downward. The rib  22   c  is formed along the second protrusion portion  22   b  at the outside in the vehicle width direction of the second protrusion portion  22   b  and protrudes downward. 
     The step attachment part  23  protrudes downward from the step part  22  to the side sill bottom part  12   b  of the side sill  12 . The step attachment part  23  is fixed by a step clip (fastening member)  25  in a state where the side sill bottom part  12   b  is in contact with a bottom portion  23   a  from an upward direction. Thereby, the step part  22  is arranged above the side sill  12  and is held in a state of extending in the vehicle body front-to-rear direction along the side sill  12 . That is, the side sill  12  is covered by the step part  22  from above. 
     A front pillar garnish  27  is integrally formed on a front end portion  22   d  of the step part  22 . The front pillar finish  27  is a region that stands from the front end portion  22   d  of the step part  22  and covers a front pillar (not shown) from a vehicle room  28  side. A side opening part  31  that is formed of a step garnish  14 , the front pillar garnish  27 , and the like are covered by a front side door  32 . An outer side  16   a  of the floor panel  16  is provided on the side sill bottom part  12   b.    
     The floor panel  16  is, for example, a plate member made of steel that forms a floor part of the vehicle Ve. The floor panel  16  includes a panel sidewall  35  and a panel bottom part  36 . The panel sidewall  35  includes an inclination part  35   a  and a vertical part  35   b.  The inclination part  35   a  is inclined inward in the vehicle width direction toward a downward direction from an inner side of the side sill bottom part  12   b.  The vertical part  35   b  extends downward from a lower side of the inclination part  35   a.  A longitudinal wall of a floor (floor part) of the vehicle is formed of the inclination part  35   a  and the vertical part  35   b.    
     The panel bottom part  36  extends inward in the vehicle width direction from a lower side of the vertical part  35   b.  A bottom portion of the floor part of the vehicle Ve is formed of the panel bottom part. The vehicle floor structure  20  is laid on the floor part (that is, the floor panel  16 ) of the vehicle Ve. 
     &lt;Vehicle Floor Structure  20 &gt; 
       FIG. 4  is an exploded perspective view in which an insulator  37  and a floor carpet  38  of the embodiment are disassembled.  FIG. 5  is a cross-sectional view along a V-V line of  FIG. 1 . 
     As shown in  FIG. 4  and  FIG. 5 , the vehicle floor structure  20  includes, for example, the insulator  37 , the floor carpet  38 , a first attachment member (attachment member)  40 , and a second attachment member (attachment member)  41 . 
     (Insulator  37 ) 
     The insulator  37  is laid, for example, in a substantially entire region of the floor of the vehicle. Specifically, the insulator  37  is arranged, for example, in a state of being laid along the panel sidewall  35  and the panel bottom part  36  of the floor panel  16  and a floor tunnel (not shown). The insulator  37  is, for example, a vibration-proof and soundproof shield material formed of a non-woven fabric in which reclaimed wool is compressed in a sheet form. 
     The insulator  37  includes an insulator attachment part  46  that is integrally formed on an upper side of a longitudinal wall  45  on the outside in the vehicle width direction. The insulator attachment part  46  includes, for example, an attachment inclination portion  51  and an attachment horizontal portion  52 . 
     The attachment inclination portion  51  is inclined, for example, outward in the vehicle width direction toward an upward direction from an upper side of the longitudinal wall  45  on the outside in the vehicle width direction. The attachment inclination portion  51  is arranged, for example, so as to be in contact with an inclination part  35   a  (that is, a vehicle body side) of the panel sidewall  35 . 
     The attachment horizontal portion  52  extends, for example, outward in the vehicle width direction from an upper side of the attachment inclination portion  51 . The attachment horizontal portion  52  is arranged, for example, so as to be in contact with the side sill bottom part  12   b  (that is, a vehicle body side). 
     That is, the insulator attachment part  46  is arranged, for example, so as to be in contact with the inclination part  35   a  and the side sill bottom part  12   b  and is fixed to the inclination part  35   a  and the side sill bottom part  12   b  (that is, the vehicle body side) by the first attachment member  40  and the second attachment member  41  described later. 
     (Floor Carpet  38 ) 
     The floor carpet  38  is laid (arranged) along the insulator  37  on upper and inner surfaces (that is, on the insulator  37 ) of the insulator  37  in a state where the floor carpet  38  is overlapped on the entire region of the insulator  37 . The embodiment is described using an example in which the floor carpet  38  is a carpet which is generally used as a floor carpet of an automotive and in which a shag is provided on a surface skin; however, the floor carpet is not limited thereto. For example, a floor mat  54  (refer to  FIG. 1 ) that is generally used can be laid as the floor carpet. 
     The floor carpet  38  includes a carpet main body  55 , a loop part  56 , a first fit part  57  and a second fit part  58 . 
     As shown in  FIG. 2  and  FIG. 4 , the carpet main body  55  is arranged so as to be laid on the panel side wall  35  and the panel bottom part  36  of the floor panel  16  and in a region corresponding to a floor tunnel (not shown) in a state of being overlapped on the insulator  37 . 
     The loop part  56  extends, for example, outward in the vehicle width direction from an upper side of a longitudinal wall  55   a  on the outside in the vehicle width direction of the carpet main body  55 . 
     The first fit part  57  protrudes outward in the vehicle width direction from an outer side of the loop part  56  in a region close to a front end portion  56   a  of the loop part  56 . The first fit part  57  includes a fit opening portion  61  that penetrates in the vertical direction. The fit opening portion  61  is formed, for example, in a rectangular shape (rectangle) in which a longer direction extends in the vehicle body front-to-rear direction. 
     The second fit part  58  protrudes outward in the vehicle width direction from an outer side of the loop part  56  in a region close to a rear end portion  56   b  of the loop part  56 . The second fit part  58  includes a fit opening portion  62  that penetrates in the vertical direction. The fit opening portion  62  is formed, for example, in a rectangular shape (rectangle) in which a longer direction extends in the vehicle body front-to-rear direction. 
     The second fit part  58  is formed substantially similar to the first fit part  57 , and detailed description thereof is omitted. 
     (First Attachment Member  40 ) 
       FIG. 6  is an enlarged perspective view of a VI region of  FIG. 4 . 
     As shown in  FIG. 3 ,  FIG. 5 , and  FIG. 6 , the first attachment member  40  is formed, for example, by injection molding using a resin material. The first attachment member  40  includes, for example, an attachment base  65 , a fixation part  66 , a harness protection part  67 , and a regulation part  68 . 
     The attachment base  65  is in contact with the insulator attachment part  46  (that is, the attachment inclination portion  51  and the attachment horizontal portion  52 ) in a state of being pressed against the insulator attachment part  46 . The attachment base  65  extends in the vehicle body front-to-rear direction. The attachment base  65  includes a base inclination part  71  and a base flat part  72 . 
     The base inclination part  71  is arranged to be inclined along the attachment inclination portion  51  (that is, the inclination part  35   a ) and is in contact with the attachment inclination portion  51  in a state of being pressed from a diagonally upward and inward direction in the vehicle width direction against the attachment inclination portion  51 . A base flat part  72  extends outward in the vehicle width direction from an upper side of the base inclination part  71 . 
     Accordingly, the base inclination part  71  and the base flat part  72  are formed in a V shape in cross section. 
     The base flat part  72  is horizontally arranged along the attachment horizontal portion  52  (that is, the side sill bottom part  12   b ) and is in contact with the attachment horizontal portion  52  in a state of being pressed against the attachment horizontal portion  52  from above. The base flat part  72  is formed such that a pair of opening portions  74  penetrate in the vertical direction to be spaced from each other in the vehicle body front-to-rear direction. The step attachment part  23  penetrates through the pair of opening portions  74  from above, and a bottom portion  23   a  of the step attachment part  23  is fixed in a state of being in contact with the side sill bottom part  12   b  by a step clip  25 . 
     The base flat part  72  (that is, the attachment base  65 ) is fixed to the side sill bottom part  12   b,  for example, by a pair of base clips  76 . The pair of base clips  76  are provided, for example, to be spaced from each other in the vehicle body front-to-rear direction, penetrate through the attachment horizontal portion  52  of the insulator attachment part  46 , and are locked to the side sill bottom part  12   b.    
     In this state, the attachment horizontal portion  52  of the insulator attachment part  46  is fixed to the side sill bottom part  12   b  (vehicle body side) in a state of being sandwiched by the base flat part  72  and the side sill bottom part  12   b.  The attachment inclination portion  51  of the insulator attachment part  46  is fixed to the inclination part  35   a  (vehicle body side) in a state of being sandwiched by the base inclination part  71  and the inclination part  35   a.    
     For example, the pair of base clips  76  penetrate through the attachment horizontal portion  52  of the insulator attachment part  46 . Accordingly, for example, even when the insulator  37  is stepped on by an occupant and is slightly displaced, it is possible to regulate the movement of the insulator  37  by the base clip  76 . 
       FIG. 7  is a perspective view showing an example in which the floor carpet  38  is fixed to the first attachment member  40  of the embodiment. 
     As shown in  FIG. 5  and  FIG. 7 , the protection inclination part  77  extends so as to be inclined inward in the vehicle width direction toward the upward direction from an upper side of the base inclination part  71  and an inner side of the base flat part  72  (that is, a bend portion of the base flat part  72  and the base inclination part  71 ). The protection inclination part  77  extends in the vehicle body front-to-rear direction. The fixation part  66  protrudes outward in the vehicle width direction from a substantially middle region of an upper side of the protection inclination part  77 . The fixation part  66  is formed, for example, in a rectangular shape (rectangle) in which a longer direction extends in the vehicle body front-to-rear direction. 
     When the first fit part  57  of the loop part  56  is fixed (locked) to the fixation part  66 , for example, the first fit part  57  is bent downward as indicated by an arrow A. The fit opening portion  61  of the first fit part  57  is fitted to the fixation part  66  as indicated by an arrow B in a state where the first fit part  57  is bent. 
     Accordingly, the first fit part  57  of the loop part  56  is fixed (locked) to the fixation part  66 . Thereby, the floor carpet  38  is fixed to the first attachment member  40 . 
     In this state, the loop part  56  of the floor carpet  38  is placed on an eave part  78  of the first attachment member  40 . The eave part  78  protrudes inward in the vehicle width direction from an upper side of the protection inclination part  77  and extends in the vehicle body front-to-rear direction. The protection inclination part  77  and the eave part  78  are formed in an L shape in cross section. In a state where the loop part  56  is placed on the eave part  78 , for example, the second protrusion portion  22   b  (specifically, a lower side of the second protrusion portion  22   b ) of the step garnish  14  is in contact with the loop part  56 . 
     The protection inclination part  77  and the base inclination part  71  are formed in a V shape in cross section. The harness protection part  67  is formed of the protection inclination part  77 , the eave part  78 , and the base inclination part  71 . 
     The harness protection part  67  is provided on an inner side (that is, the inside in the vehicle width direction) of the base flat part  72  and extends in the vehicle body front-to-rear direction. In a wiring space  81  on the inside in the vehicle width direction of the harness protection part  67 , a wire harness  85  is wired in the vehicle body front-to-rear direction along the harness protection part  67 . The wire harness  85  is, for example, formed of a plurality of bundled electric wires and is used for an in-vehicle wiring that connects a battery of the vehicle Ve to an electric component or the like. 
     The wire harness  85  is wired in the wiring space  81 , and thereby, an upper side of the wire harness  85 , an outside in the vehicle width direction of the wire harness  85 , and a lower side of the wire harness  85  are covered by the harness protection part  67 . That is, the upper side, the outside in the vehicle width direction, and the lower side of the wire harness  85  are protected by the harness protection part  67 . Accordingly, the first attachment member  40  also serves as a protection member of the wire harness  85 . Thereby, for example, it is possible to eliminate a dedicated member such as a corrugated tube that is conventionally required for protecting the wire harness  85 . 
     As shown in  FIG. 3  and  FIG. 6 , the regulation part  68  is provided on each of the pair of opening portions  74  of the attachment base  65 . The regulation part  68  protrudes inward in the vehicle width direction from an outer region  74   b  in the vehicle width direction of a circumferential edge  74   a  of the opening portion  74 . The regulation part  68  comes into contact with the step attachment part  23  of the step garnish  14 , for example, when first attachment member  40  is about to be slightly displaced inward in the vehicle width direction. Thereby, it is possible to regulate the movement to the inside in the vehicle width direction of the first attachment member  40  by the regulation part  68 . 
     (Second Attachment Member  41 ) 
     As shown in  FIG. 4 , the second attachment member  41  is constituted substantially similar to the first attachment member  40  and includes an attachment base  87 , a fixation part  88 , and the like. The attachment base  87  is fixed to the side sill bottom part  12   b,  for example, by a pair of base clips (not shown) similarly to the first attachment member  40 . Similarly to the first attachment member  40 , the second fit part  58  (specifically, the fit opening portion  62 ) of the loop part  56  is fitted to the fixation part  88 , and the second fit part  58  of the loop part  56  is fixed (locked) to the fixation part  88 . 
     The second attachment member  41  has a configuration similar to the first attachment member  40 . Hereinafter, the first attachment member  40  is described, and description of the second attachment member  41  is omitted. 
     As described above, according to the vehicle floor structure  20  of the embodiment, as shown in  FIG. 5  and  FIG. 7 , the first attachment member  40  that fixes the insulator  37  to the vehicle body side (specifically, the side sill  12 ) is provided, and the fixation part  66  is formed on the first attachment member  40 . Accordingly, the fit opening portion  61  of the first fit part  57  is fitted to the fixation part  66  of the first attachment member  40  as indicated by the arrow A, and thereby, the loop part  56  of the floor carpet  38  is fixed by the fixation part  66 . 
     In this way, by forming the fixation part  66  on the first attachment member  40 , it is possible to fix the insulator  37  and the floor carpet  38  to the vehicle body side by one first attachment member  40  in a state where the insulator  37  and the floor carpet  38  are laid in two layers. Thereby, for example, it is possible to reduce the number of members required for laying the insulator  37  and the floor carpet  38  in two layers on the floor panel  16 . 
     As shown in  FIG. 3  and  FIG. 5 , the regulation part  68  is formed on the first attachment member  40 . Accordingly, for example, when the first attachment member  40  is about to be slightly displaced inward in the vehicle width direction, it is possible to cause the regulation part  68  to come into contact with the step attachment part  23  of the step garnish  14 . Thereby, the movement to the inside in the vehicle width direction of the first attachment member  40  can be regulated by the regulation part  68 . The loop part  56  of the floor carpet  38  is fixed to the fixation part  66  of the first attachment member  40 . 
     Accordingly, it is possible to regulate the position of the floor carpet  38  by the regulation part  68 . Thereby, for example, even when the floor carpet  38  is stepped on by an occupant and is about to be slightly displaced in an arrow C direction, it is possible to cause the regulation part  68  to come into contact with the step attachment part  23  and regulate the movement (displacement) in the arrow C direction of the floor carpet  38  by the regulation part  68 . 
     The technical scope of the present invention is not limited to the embodiment described above, and various modifications can be added without departing from the scope of the present invention. 
     For example, the above embodiment is described using an example in which the first attachment member  40  and the second attachment member  41  are provided as the attachment member; however, the embodiment is not limited thereto. As another example, for example, the number of attachment members may be arbitrarily selected. 
     Further, the above embodiment is described using an example in which one fixation part  66  and one fixation part  88  are formed on the first attachment member  40  and the second attachment member  41 , respectively; however, the embodiment is not limited thereto. As another example, for example, the number of fixation parts formed on the first attachment member  40  and the second attachment member  41  may arbitrarily selected. 
     A component in the embodiment can be replaced by a known component without departing from the scope of the present invention, and the modified examples may be suitably combined.