JP4895841B2 - Vehicle floor spacer - Google Patents

Description

  The present invention relates to a vehicle floor spacer used for the purpose of ensuring the flatness of a vehicle floor.

  In order to ensure the flatness of the vehicle floor, to improve sound absorption performance, to protect passengers against shocks generated inside and outside the vehicle, or to reduce the weight, etc. It is known to place and arrange a vehicle floor spacer made of a foamed resin molding in an existing groove. A foamed resin molded body such as a polystyrene resin foam generally has poor sound absorption characteristics and hardly has sound absorption performance by itself. Therefore, when high sound absorption performance is required from the viewpoint of improving the comfort in the car, use a foamed resin molded article with felt or the like that functions as a sound absorbing material in post-processing as a vehicle floor spacer. Is done.

  In general, a solid foamed resin molded body is lightweight and has a high compressive strength, and thus is effective as a vehicle floor spacer having a thickness of about 40 mm to 150 mm. Moreover, in patent document 1, as shown in FIG. 13, the product made from a hard foam plastic which has the horizontal part 2a corresponding to the floor surface which forms the step of a passenger seat of a motor vehicle, and the inclined part 2b laid in front of the step. A floor spacer 1 is described in which both the horizontal portion 2a and the inclined portion 2b have a flat plate portion 2 on the indoor side, and a floor structure 3 such as a honeycomb structure, a slit structure, or a protrusion structure on the floor surface side. ing.

Japanese Patent Laid-Open No. 2003-127796

  Like the floor spacer in the form shown in FIG. 13, the indoor side is a flat plate portion, and the floor frame side is a vehicle floor spacer having a structure in which a plurality of protrusions are erected from the back surface of the flat plate portion. In order to improve sound absorption, it is necessary to attach felt or the like as a sound absorbing material. When high sound-absorbing performance is required, a felt with a thickness of about 20 mm to 60 mm is conventionally required. However, when a felt with such a thickness is pasted, a decrease in compressive strength due to the felt cannot be ignored. There is a risk of degradation of habitability due to large sinking. Further, when the bottom surface of the ridge slides in contact with the vehicle frame, there is a possibility that a squealing noise or a squeaking noise may be generated.

  The present invention has been made in view of the circumstances as described above, and in a vehicle floor spacer, while satisfying required compressive strength and weight reduction, it is possible to satisfy both sound absorption and indoor silence at the same time. It is an object of the present invention to provide a vehicle floor spacer made of a foamed resin molded article.

  A first form of a vehicle floor spacer according to the present invention is a vehicle floor spacer installed on a vehicle floor frame, and is erected from a flat plate portion on the indoor side and a back surface of the flat plate portion on the floor frame side. The floor comprises at least a floor spacer body made of a foamed resin molded body having a plurality of protrusions, and a layer made of a sound absorbing material arranged so as to fill a space formed between the protrusions, and the floor A plurality of bottomed holes are formed in the flat plate portion of the spacer body.

  In the vehicle floor spacer of the first embodiment, the indoor side of the floor spacer main body made of the foamed resin molded body is a flat plate portion, and the object of ensuring the flatness of the floor surface of the vehicle can be achieved. In addition, the floor frame side of the floor spacer body has a structure in which a plurality of protrusions are erected from the back surface of the flat plate portion, and the ground contact area of the entire protrusion with respect to the floor frame is determined by the compressive strength required for the vehicle floor spacer. By appropriately setting in consideration, it is possible to provide a vehicle floor spacer that satisfies the compression strength while satisfying the weight reduction.

  Furthermore, in the vehicle floor spacer of the first embodiment, a layer made of a sound absorbing material is formed in a space formed between the protrusions of the floor spacer body so as to fill the space. Since the layer made of the sound absorbing material functions as a sound absorbing wall that prevents sound generated outside the room from entering the room, high sound absorbing performance can be ensured for the vehicle interior. What attaches a sound-absorbing material such as felt to the back surface like a conventional vehicle floor spacer is in contact with the floor frame via the sound-absorbing material, but the vehicle floor spacer according to the present invention is Since the protrusions are in direct contact with the floor frame, the compression strength set in advance for the vehicle floor spacer changes (decreases) even if there is a layer made of a sound absorbing material that is easily compressed. Never do. Therefore, high sound absorption performance can be provided at the same time while satisfying the compressive strength.

  Furthermore, in the vehicle floor spacer of the first embodiment, a plurality of bottomed holes are formed in the flat plate portion of the floor spacer body. By providing the bottomed hole, indoor noise can be diffusely reflected by the wall surface of the bottomed hole, and the sound pressure of the noise can be absorbed by vibration of the bottom part of the bottomed hole. The sound absorption performance for indoor sound is also improved. The position of the bottom of the bottomed hole may be a position closest to the floor frame of the floor spacer body, or may be a position closer to the indoor side. In the latter case, noise entering the room from the outside can also be reduced.

  A second form of the vehicle floor spacer according to the present invention is a vehicle floor spacer installed on a vehicle floor frame, and is erected from a flat plate portion on the indoor side and a back surface of the flat plate portion on the floor frame side. A floor spacer body made of a foamed resin molded body having a plurality of protrusions, and at least a layer made of a sound absorbing material disposed so as to fill a space formed between the protrusions, and at least the above The sheet | seat which consists of a material with a smaller friction coefficient with respect to a floor frame than the foamed resin material which comprises this protrusion is covered so that the bottom face of a protrusion may be covered, It is characterized by the above-mentioned.

  The vehicle floor spacer of the second embodiment can exhibit the same functions and effects as the vehicle floor spacer of the first embodiment, except for the effects resulting from the “bottomed hole”. Further, the vehicle-type floor spacer of the second embodiment is “attached with a sheet made of a material having a smaller coefficient of friction with respect to the floor frame than the foamed resin material constituting the ridge so as to cover the bottom surface of the ridge”. By providing the configuration, when the vehicle floor spacer is installed in the vehicle, it is possible to reliably generate squealing and frictional noise that may occur when the bottom surface of the protrusion slides in contact with the vehicle frame. Can be suppressed. For this reason, it is possible to further ensure high silence in the room. Examples of the sheet include craft tape, cloth tape, cloth tape, cellophane tape, aluminum tape, polyethylene tape, Japanese paper tape, vinyl tape, and the like. Of these, kraft tape is preferable because it is easy to handle and inexpensive.

  In the vehicle floor spacer according to the second aspect, it is more preferable that the sheet is attached so as to continuously connect the bottom surfaces of at least two protrusions. This configuration can be easily formed by adopting a technique in which a tape having a predetermined width wound around a roll is continuously attached to the bottom surfaces of two or more protrusions while being unwound. By adopting this mode, there is a situation in which the layer made of the sound absorbing material arranged so as to fill the space formed between the ridges falls from the floor spacer body during transportation or assembly to the vehicle. It can be effectively prevented from occurring.

  The vehicle floor spacer according to the third aspect of the present invention is a material having a smaller coefficient of friction with respect to the floor frame than the foamed resin material constituting the ridges so as to cover the bottoms of the ridges and the ridges. It is provided with both of the configurations in which a sheet made of is attached. In this aspect, it is possible to enjoy both the operational effects of both configurations.

  In the present invention, the floor spacer body can be made of any foamed resin molded body, but is preferably a foamed molded body of thermoplastic resin beads. Examples of the thermoplastic resin include polystyrene resins, polyolefin resins (eg, polypropylene resins, polyethylene resins), polyester resins (eg, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate), polycarbonate resins, and the like. .

  Among these, it is preferable to use foamed beads of a styrene-modified polyolefin resin obtained by impregnating and polymerizing a polyolefin-based resin particle with a styrene monomer, particularly a styrene-modified polyethylene resin. The reason for this is that the molded product of the styrene-modified polyolefin resin is superior in dimensional stability and shape retention compared to the polypropylene resin and polyethylene resin, and is less likely to generate dust due to rubbing than the polystyrene resin. In addition, the expansion molding of polyethylene resin beads and polypropylene resin beads has a large dimensional shrinkage ratio, and it is difficult to obtain dimensional accuracy compared to the foam molding of styrene modified polyolefin resin beads. This is because the power is small.

  When the styrene-modified polyolefin resin is used, the proportion of the styrene component is 40 to 90% by weight, preferably 50 to 85% by weight, and more preferably 55 to 75% by weight. When the proportion of the styrene component is less than 40% by weight, the material strength (compressive strength) is considerably reduced, so that a space having a sufficient width for arranging the sound absorbing material cannot be formed between the protrusions. When it exceeds 90% by weight, there are disadvantages such as generation of rubbing noise with the frame (body panel) of the automobile as in the case of the polystyrene resin alone.

  When molding the floor spacer body, for example, a thermoplastic resin such as the above-mentioned styrene-modified polyethylene resin is impregnated with a foaming agent to form a foamable thermoplastic resin, and the foamable thermoplastic resin is heated with steam. Pre-expanded particles are produced by pre-expanding within a range of 3 to 70 times. Then, the pre-expanded particles are filled in the mold cavity and foam-molded by steam heating or the like. The expansion ratio at the time of foam molding is 3 to 70 times. Butane, propane or the like can be used as the blowing agent.

  In the present invention, the sound absorbing material constituting the layer made of the sound absorbing material is not particularly limited, and those generally used in the field of automobiles can be appropriately used. Specifically, felt (for example, cotton, chemical fibers and other miscellaneous hairs solidified with PET), polyurethane foam, non-woven fabric, recycled materials for vehicle members (pulverized products of urethane, cotton, chemical fibers, etc.) Can be enumerated with PET resin, defibrated fibers, fiber materials made of animals and plants, glass wool, asphalt foam, and the like. Of these, felt, polyurethane foam or non-woven fabric is preferable, and among them, a non-woven fabric made of a high performance batting material (Synsalate (trade name)) is preferable.

  The overall shape of the vehicle floor spacer according to the present invention is arbitrary on the condition that the floor spacer body has a flat plate portion and a plurality of ridges standing from the back surface thereof. A shape that simply forms a horizontal portion sometimes, or a shape that includes an inclined portion on which the occupant's foot rides at the tip of the horizontal portion as shown in FIG. In the latter case, a plurality of protrusions are erected on the back surfaces of both flat plate portions constituting the horizontal portion and the inclined portion. The protrusion may have a columnar shape or a prismatic shape, or may have a slit shape as illustrated in FIG. In any case, since a space is formed between the ridges, the layer made of the sound absorbing material is formed so as to fill the space.

  In the vehicle floor spacer according to each aspect of the present invention, the layer made of the sound absorbing material may be formed so as to fill the entire space formed between the ridges. You may form so that a part may be filled up. One is selected in consideration of the sound absorption performance required for the vehicle and the sound absorption performance of the sound absorbing material to be used. In the latter case, if a layer made of a sound absorbing material is formed so that a part of the space formed between the ridges remains on the back surface of the flat plate portion, the remaining space performs a sound absorbing function (silence function), and the sound absorbing performance. Can be further improved.

  The mode in which the sound absorbing material is attached to the space formed between the protrusions is arbitrary, and there is no particular limitation. It may be an embodiment using an adhesive, an embodiment using an appropriate fastener such as a staple, or the like. However, in consideration of work efficiency at the time of attachment, an aspect in which the sound absorbing material is held at a predetermined position only by contact between the sound absorbing material and the protrusions and a layer made of the sound absorbing material is formed is most preferable. In this aspect, in addition to improving work efficiency when attaching the sound absorbing material, the floor spacer main body portion and the sound absorbing material, which are different materials, can be easily separated and recovered when the vehicle floor spacer is discarded. There are also benefits.

  ADVANTAGE OF THE INVENTION According to this invention, while satisfying required compression strength and weight reduction, the floor spacer for vehicles which consists of a foaming resin molding which can satisfy | fill a sound-absorbing property and the interior quietness simultaneously is obtained.

  Hereinafter, a floor spacer for a vehicle according to the present invention will be described based on embodiments with reference to the drawings. FIGS. 1-6 is a figure explaining the floor spacer A for vehicles of 1st form, FIGS. 7-10 is a figure explaining the floor spacer B for vehicles of 2nd form, FIG. 11 and FIG. It is a figure explaining the floor spacer C for vehicles of a 3rd form.

  The vehicle floor spacers A, B, and C according to the present invention each include a floor spacer body 10 and a sound absorbing material 20 as a basic configuration. The floor spacer body 10 is a foamed resin molded body obtained by, for example, in-mold foam molding of pre-expanded particles of styrene-modified polyethylene resin, and the sound absorbing material 20 is, for example, felt.

  In the first aspect A1 of the vehicle floor spacer A of the first embodiment shown in FIGS. 1 to 4, the floor spacer body 10 is composed of a horizontal portion 11a and an inclined portion 11b located at the tip of the horizontal portion 11a. The Both the horizontal portion 11a and the inclined portion 11b include flat plate portions 12a and 12b and a plurality of protrusions 13a and 13b integrally formed on the back side of the flat plate portions 12a and 12b. In the illustrated example, the ridges 13a on the flat plate portion 12a side are 16 cylindrical bodies, and the ridges 13b on the flat plate portion 12b side are shown as four rectangular parallelepipeds, but this number and shape are arbitrary. Yes, it is not limited to the illustrated one.

  An appropriate number of bottomed holes 15 are formed in the flat plate portions 12a and 12b in areas where the protrusions 13a and 13b are not formed, and the bottom portions 16 of the bottomed holes 15 are flat plates as shown in FIG. It is formed at a substantially intermediate position between the portions 12a and 12b, that is, a position closer to the indoor side. Although not shown, the bottom portion 16 of the bottomed hole 15 may be formed at a position closest to the bottom surfaces of the flat plate portions 12 a and 12 b, that is, the floor frame of the floor spacer body 10. In the illustrated example, the bottomed hole 15 is formed in both the flat plate portions 12a and 12b, but either of them can be omitted. The number and size of the bottomed holes 15 are arbitrary.

  The vehicle floor spacer A1 is accommodated and installed in a recessed groove present in a floor frame (not shown). In that case, the said horizontal part 11a of the floor spacer main body 10 mainly functions as a raising material, and ensures that a floor surface becomes a flat surface. The inclined portion 11b is a place where the occupant's feet are placed during driving, and functions as an occupant's lower limb impact absorbing pad.

  In the vehicle floor spacer A1, the total area of the ridge 13a with respect to the flat plate portion 12a is set in consideration of the overload applied to the horizontal portion 11a when it is arranged in the vehicle, and the impact load generated at the time of a collision, etc. The total area of the ridges 13b with respect to the inclined portion 12b is set so that can be effectively absorbed. This design concept is already known as described in Patent Document 1, and when the protrusions 13a and 13b are formed based on the design concept, the protrusions and protrusions are formed on the back surfaces of the flat plate portions 12a and 12b. Spaces 14a and 14b are formed between the strips.

  The horizontal portion 11a and the inclined portion 11b may have the same expansion ratio. However, since the inclined portion 11b receives a large impact load, the horizontal portion 11a and the inclined portion 11b may be molded with different expansion ratios so that they can be absorbed effectively. Good. In that case, as the pre-expanded particles for the inclined portion 11b, particles pre-expanded at a lower magnification than the pre-expanded particles for the horizontal portion 11a are used, and the horizontal portion 11a and the inclined portion 11b in the molding cavity are used. In the vicinity of the boundary, a partition wall is provided in advance so that both particles do not mix, and each pre-expanded particle is simultaneously filled in each partitioned cavity, and the partition wall is quickly removed from the cavity after filling. By performing in-mold foam molding, the floor spacer body 10 having different foaming ratios can be formed between the horizontal portion 11a and the inclined portion 11b.

  In the vehicle floor spacer A1, a sound absorbing material 20 such as felt, polyurethane foam, or nonwoven fabric is embedded in the spaces 14a, 14b between the protrusions 13a, 13b of the floor spacer main body 10, and the sound absorbing material is used. A layer is formed. In the vehicle floor spacer A1 shown in FIGS. 1 to 4, the thickness of the sound absorbing material 20 is substantially the same as the height of the ridge 13a in the horizontal portion 11a, and is substantially the same as the height of the ridge 13b in the horizontal portion 11b. It is.

  In the region 21a corresponding to the horizontal portion 11a of the sound absorbing material 20, a through hole 22 having a diameter slightly smaller than the diameter of the ridge 13a is formed at a position corresponding to the ridge 13a, as shown in FIG. By press-fitting the sound absorbing material 20 from the back surface of the floor spacer main body 10, the region 21a of the sound absorbing material 20 enters so as to fill the entire space 14a, thereby forming a layer made of the sound absorbing material. The sound absorbing material 20 is held in that position by contact between the sound absorbing material 20 and the protrusion 13a.

  A region 21b corresponding to the inclined portion 11b of the sound absorbing material 20 is partially continuous with the region 21a, and a portion corresponding to the protrusion 13b of the inclined portion 11b is slightly larger than the lateral width of the protrusion 13a. A notch 23 having a narrow width is formed. By press-fitting the region 21b between the ridges 13b, the region 21b enters the space 14b so as to form a layer made of a sound absorbing material. Again, the sound absorbing material 20 is held in that position with only contact between the sound absorbing material 20 and the ridge 13b. In addition, you may make it attach the part 21c and 21c located in the both sides of the area | region 21b using an adhesive agent auxiliary as needed.

  Thus, the state after attaching the sound-absorbing material 20 to the floor spacer body 10 is shown in FIGS. As shown in the figure, the sound absorbing material 20 is all housed in the space between the protrusions, and the lower ends of the protrusions 13a and 13b of the floor spacer body 10 are exposed on the back surface of the vehicle floor spacer A1. When the vehicle floor spacer A1 is accommodated and installed in a concave groove existing in the vehicle floor frame, the exposed lower end surfaces of the ridges 13a and 13b are in direct contact with the floor frame, which serves as a support surface for the overload. .

  As described above, the vehicle floor spacer A1 has a configuration in which a plurality of protrusions 13a and 13b are erected on the back surface of the floor spacer body 10 so as to have a required ground contact area, and satisfy the weight reduction. However, the compressive strength can be satisfied at the same time. Furthermore, the space 14a, 14b formed between the ridges is formed with a layer made of the sound absorbing material 20 so as to fill the space, and it functions as a sound absorbing wall, thus ensuring high sound absorbing performance for the room. Is done. In particular, in all of the first-type vehicle floor spacers A including the vehicle floor spacer A1 according to the first aspect, the floor spacer main body 10 is provided with a large number of bottomed holes 15, so that the indoor noise is increased. Can be diffusely reflected by the wall surface of the bottomed hole 15 and the sound pressure of the noise can be absorbed by the vibration of the bottom 16 of the bottomed hole 15, so that the sound absorption performance for room sound is also improved.

  In addition, in the vehicle floor spacer A1 which is the first aspect shown in FIGS. 1 to 4, the sound absorbing material 20 is also arranged on the back surface of the inclined portion 11b. However, depending on the required sound absorbing performance level, The sound absorbing material 20 in the region may be omitted. As described above, the bottomed hole 15 may be omitted in the same manner. Further, only the portions 21c and 21c located on both sides of the region 21b of the sound absorbing material 20 may be omitted. In any case, when the vehicle floor spacer A1 is discarded, the floor spacer body 10 and the sound absorbing material 20 which are different materials can be easily separated and collected.

  The floor spacer body 10 may be only the horizontal portion 11a, or may be only the inclined portion 11b. The overall shape is rectangular as an example, and a floor spacer body 10 having an appropriate shape is used according to the shape of a groove or the like formed in the floor frame. In order to increase the force of contact with the sound absorbing material 20, irregularities may be formed on the peripheral surfaces of the protrusions 13a and 13b. As described above, the ridge 13b formed on the inclined portion 11b may have a cylindrical shape like the ridge 13a. Further, the horizontal cross-sectional shape of the ridges 13a and 13b may be rectangular or oval.

  FIG. 5 is a view corresponding to FIG. 3 and showing other aspects A2 to A4 of the vehicle floor spacer A of the first embodiment. Here, the layer made of the sound absorbing material 20 is formed so as to fill a part rather than all of the spaces 14a, 14b formed between the protrusions 13a, 13b. This is different from the illustrated vehicle floor spacer A1. The other members are the same as the vehicle floor spacer A1 of the first aspect, and are given the same reference numerals. The vehicle floor spacer of this embodiment can be used effectively when the sound absorbing material 20 has high sound absorbing performance.

  In the vehicle floor spacer A2 of the second mode shown in FIG. 5a, the thin sound absorbing material 20a is attached only in the vicinity of the lower ends of the ridges 13a and 13b, and the flat plate portions 12a and 12b of the floor spacer body 10 and the sound absorbing material. A space 14c remains between the material 20a. This space 14c functions as a sound absorbing chamber. In the vehicle floor spacer A3 of the third aspect shown in FIG. 5b, the thin sound absorbing material 20a is positioned so as to contact the back surface of the flat plate portions 12a and 12b of the floor spacer body 10, and is shown in FIG. 5c. In the vehicle floor spacer A4 of the fourth aspect, the thin sound absorbing material 20a is positioned at an intermediate height between the ridges 13a and 13b.

  FIG. 6 shows a fifth aspect A5 of the vehicle floor spacer A of the first form. Here, as the floor spacer main body 10b, a floor spacer main body 10b in which the protrusion formed on the back surface of the flat plate portion 12b of the inclined portion 11b is a cylindrical protrusion 13c is used, and as shown in FIG. As shown, a cross-shaped cut line 24 is formed at a location corresponding to each of the protrusions 13a and 13c. In the drawing, the sound absorbing material 20b1 corresponding to the horizontal portion 11a and the sound absorbing material 20b2 corresponding to the inclined portion 11b are shown as separated, but they may be continuous.

  The sound absorbing material 20b is press-fitted with the position of the cut line 24 aligned with the positions of the protrusions 13a and 13c, thereby completing the vehicle floor spacer A4 having the shape shown in FIG. 6a. In this embodiment, the frictional force between the protrusions 13a and 13c and the sound absorbing material 20b is further increased, and the embedding mode of the sound absorbing material 20b is further stabilized.

  FIGS. 7-10 has shown the two aspects of the floor spacer B for vehicles of the 2nd form by this invention. Compared with the vehicle floor spacer A of the first embodiment described above, the vehicle floor spacer B of the second embodiment is (1) the floor spacer main body 10 does not have the bottomed hole 15, and (2) at least the protrusions. The sheet 17 made of a material having a smaller coefficient of friction with respect to the floor frame than the foamed resin material constituting the ridge is pasted so as to cover the bottom surfaces of 13a and 13b. Other configurations are the same. Therefore, in FIGS. 7-10, the same code | symbol is attached | subjected to the member which is common with the floor spacer A for vehicles of 1st form, and the description is abbreviate | omitted.

  FIGS. 7 and 8 show a first mode B1 of the vehicle floor spacer B of the second embodiment, and correspond to FIGS. 2 and 3, respectively. As described above, the flat plate portions 12a and 12b of the floor spacer main body 10 are not formed with through holes, and are formed on the bottom surfaces of the plurality of protrusions 13a and 13b integrally formed on the back surfaces of the flat plate portions 12a and 12b. Is affixed with a sheet 17 made of a material having a smaller coefficient of friction with respect to the floor frame of the vehicle than the foamed resin material constituting the ridges. Kraft tape, which is a low friction material, is used for the sheet 17, for example, but other materials such as cloth tape, cloth tape, cellophane tape, aluminum tape, polyethylene tape, Japanese paper tape, vinyl tape can also be used. .

  The vehicle floor spacer B1 according to the first aspect can exhibit the same effects as the vehicle floor spacer A according to the first embodiment except for the effects due to the “bottomed hole 15”. Furthermore, the vehicle floor spacer B1 according to the first aspect has the ridges 13a, 13b when the vehicle floor spacer B1 is installed in the vehicle by attaching the sheet 17 to the bottom surfaces of the ridges 13a, 13b. It is possible to reliably suppress the squealing and frictional sounds that may occur when the bottom surface of 13b slides in contact with the floor frame. For this reason, it is possible to further ensure high silence in the room. The sheet 17 is desirably affixed to all bottom surfaces of the ridges 13a and 13b, but may be affixed only to the bottom surfaces of some of the ridges.

  FIGS. 9 and 10 show a second mode B2 of the vehicle floor spacer B of the second mode, and correspond to FIGS. 2 and 3, respectively. Here, the strip-shaped tapes 17a are respectively attached so as to continuously connect the bottom surfaces of the plurality of protrusions 13a and the plurality of protrusions 13b. In this aspect, in addition to the effect of suppressing the above-described sound generation, the layer made of the sound absorbing material 20 arranged so as to fill the space formed between the protrusions 13a and 13b is provided at the time of transportation or to the vehicle. There is an advantage that it is possible to effectively prevent a situation in which the floor spacer body 10 is dropped from the floor spacer body 10 during assembly.

  FIGS. 11 and 12 are views corresponding to FIGS. 7 and 9 showing two aspects of the third embodiment of the vehicle floor spacer C according to the present invention. The vehicle floor spacer C of the third form is provided on the bottom surface of each of the plurality of protrusions 13a, 13b integrally formed on the back side of the flat plate portions 12a, 12b in the vehicle floor spacer A of the first form. A sheet 17 made of a material whose friction coefficient with respect to the floor frame is smaller than that of the foamed resin material constituting the ridge is attached. In the vehicle floor spacer C1 of the first aspect shown in FIG. In the vehicle floor spacer C2 of the second embodiment shown in FIG. 12, the bottom surfaces of the plurality of protrusions 13a and the plurality of protrusions 13b are continuously provided. The belt-like tapes 17a are respectively pasted so as to be connected to each other. The vehicle floor spacer C of the third embodiment has an advantage that it can enjoy both the function and effect of the bottomed hole 15 and the function and effect of the seat 17.

  Although not shown in the drawings, in both the vehicle floor spacer B of the second form and the vehicle floor spacer C of the third form, the vehicle floor spacer is formed using the thin sound absorbing material 20a shown in FIG. Of course it is possible to do. Further, the sound absorbing material 20b1 and 20b2 having the form shown in FIG. 6 may be used.

The perspective view which looked at the 1st mode A1 of floor spacer A for vehicles of the 1st form by the present invention from the front side. The perspective view which looked at the floor spacer for vehicles shown in FIG. 1 from the back side. Sectional drawing by the aa line of FIG. The figure for demonstrating the assembly state of the floor spacer for vehicles shown in FIG. 5a to 5c are views corresponding to FIG. 3 and showing second to fourth aspects A2, A3 and A4 of the vehicle floor spacer A of the first embodiment. 6A is a side view showing a fifth aspect A5 of the vehicle floor spacer A of the first embodiment, and FIG. 6B is a plan view showing a sound absorbing material used there. The perspective view which looked at the 1st mode B1 of floor spacer B for vehicles of the 2nd form by the present invention from the back side. Sectional drawing by the aa line of FIG. The perspective view which looked at the 2nd mode B2 of floor spacer B for vehicles of the 2nd form by the present invention from the back side. Sectional drawing by the aa line of FIG. The perspective view which looked at the 1st mode C1 of floor spacer C for vehicles of the 3rd form by the present invention from the back side. The perspective view which looked at the 2nd mode C2 of floor spacer C for vehicles of the 3rd form by the present invention from the back side. The figure which shows an example of the conventional floor spacer for vehicles.

Explanation of symbols

  A, B, C: Vehicle floor spacer, 10: Floor spacer body, 11a ... Horizontal portion, 11b ... Inclined portion, 12a, 12b ... Flat plate portion, 13a, 13b ... Projection, 14a, 14b ... Projection and projection 15 ... through hole, 16 ... bottom of the through hole, 17, 17a ... sheet made of a material having a smaller coefficient of friction with respect to the floor frame than the foamed resin material constituting the ridge, 20 ... sound absorbing material

Claims (5)

A vehicle floor spacer installed on a vehicle floor frame,
A space formed between a floor spacer body made of a foamed resin molded body having a flat plate portion on the indoor side and a plurality of protrusions standing from the back surface of the flat plate portion on the floor frame side, and the protrusion And a plurality of bottomed holes are formed in the flat plate portion of the floor spacer main body, and the bottom portion of the bottomed holes is the flat plate. A floor spacer for a vehicle, characterized in that it is formed at a substantially middle position of the portion, and the back side of the flat plate portion is also a hole from the bottom portion . To claim 1, sheet made of least material having a low coefficient of friction against the floor frame than foamed resin material constituting the protruding strip so as to cover the bottom surface of the projection is characterized in that it is attached The floor spacer for vehicles as described .   The vehicle floor spacer according to claim 2, wherein the sheet is attached so as to continuously connect the bottom surfaces of at least two protrusions. The vehicle floor spacer according to any one of claims 1 to 3 , wherein the layer made of the sound absorbing material is formed so as to fill an entire space formed between the protrusions. The vehicle floor spacer according to any one of claims 1 to 4 , wherein the sound absorbing material is any one of felt, polyurethane foam, and nonwoven fabric.

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