JPH0650965U - Car optional carpet - Google Patents

Abstract

(57) [Abstract] [Purpose] Provides an optional carpet for automobiles that is excellent in cushioning properties, sound absorbing properties, heat insulating properties, low-temperature flexibility, and lightweight, is less likely to be misaligned with the floor carpet, and is suitable for recycling. To do. [Structure] An optional carpet 1 for an automobile in which a fiber carpet layer 4 is laminated on a base material sheet 2, wherein the base material sheet 2 is laminated with low density flexible urethane foam sheets 2b and 2c on both sides of a urethane chip sheet 2a. Good cushioning, sound absorption, and
Achieves heat insulation and low temperature flexibility, and achieves weight reduction. Further, by forming a non-slip pattern of a predetermined shape on the outer surface of the base material sheet 2 which is the back surface side of the optional carpet 1, positional deviation with respect to the floor carpet is prevented.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an optional carpet for an automobile, which is used by being laid on a floor carpet of an automobile, and more particularly to the above-mentioned lightweight optional carpet having excellent cushioning property, sound absorbing property, heat insulating property and the like.

[0002]

[Prior art]

 The floor carpet of a car is difficult to remove and cannot be easily cleaned even if it gets dirty from the ground. Therefore, in general, an optional carpet is laid on the floor carpet for the purpose of preventing the stain.

[0003] Such an optional carpet for automobiles is manufactured in an appropriate shape and size for a driver's seat, an auxiliary seat, a rear seat, etc. Conventionally, a vinyl chloride sheet having a water-washing resistance, The mainstream was mats with a single-layer structure made of vinyl chloride foam sheets and rubber sheets. However, in recent years, due to the trend toward higher quality, option carpets with a structure in which a fiber carpet layer is laminated on a rubber sheet, vinyl chloride sheet, etc. have become mainstream.

[0004]

[Problems to be solved by the device]

 By the way, the conventional optional carpet for automobiles has the following drawbacks because the base sheet is a rubber sheet or a vinyl chloride sheet. (1) Inferior in cushioning property, sound absorbing property, and heat insulating property. In addition, there is no breathability or water permeability, and moisture tends to accumulate between the floor carpet and the floor carpet. (2) In cold regions and during cold weather, the flexibility decreases, and the curling habit becomes difficult to correct, and the floor mat does not fit. Also, in the worst case, cracking occurs due to the reduced flexibility. (3) Since the material is relatively heavy, it is not easy to put it in and out when washing it with water. (4) Generally, recycling is impossible, it cannot be treated as an incombustible material, and even when it is disposed of by landfill, there is a problem in environmental protection. The present invention has been proposed to solve the above problems, and is excellent in cushioning property, sound absorbing property, heat insulating property, low temperature flexibility, and lightweight, and has a positional displacement with respect to a floor carpet. It is an object of the present invention to provide an option carpet for automobiles that is less likely to cause a problem and is suitable for recycling.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, an optional carpet for an automobile of the present invention is a laminate of fiber carpet layer on a base material sheet, and the base material sheet is a low density soft urethane foam on both sides of a urethane chip sheet. The feature is that the sheets are laminated, and a non-slip pattern having an uneven shape is formed on the outer surface of the base material sheet which is the back side of the option carpet.

[0006]

[Action]

 In the automobile optional carpet of the present invention, noise such as engine noise and gear noise is absorbed by the base material sheet formed by laminating the urethane chip sheet on both sides with the low density soft urethane foam sheet. The seat enhances the heat insulation effect of the floor. In addition, since the above-mentioned base material sheet is lightweight, it can be easily put in and taken out for washing with water, etc., and since it has appropriate breathability and water permeability, moisture does not accumulate between it and the floor sheet. . Furthermore, by imparting appropriate water repellency to the low-density flexible urethane foam sheet and urethane chip sheet, the base material does not absorb a large amount of water, and even if dirt adheres, it can be easily removed. Moreover, when the feet are placed on the optional carpet, the soft feel can be obtained in combination with the fiber carpet layer on the base material sheet.

Further, since the base material sheet of the optional carpet of the present invention is composed of the urethane chip sheet and the low-density soft urethane foam sheet, the flexibility of the optional carpet is less deteriorated even in cold regions or during cold weather. , Fits well on the floor carpet. In addition, it has high flexibility, does not cause curling, and does not cause cracks.

Since the back surface of this optional carpet is formed with a concave and convex shape, a positional deviation with respect to the floor carpet hardly occurs. The unevenness creates an appropriate space between the floor carpet and the floor carpet, so that the ventilation between the option carpet and the floor carpet becomes good.

In addition, the optional carpet for automobiles of the present invention is used as a base material sheet material for crushing wastes of soft urethane foam, scraps after processing, scraps, etc. into chips, which are used together with urethane prepolymers. It is suitable for recycling because it uses urethane chip sheet obtained by compression and solidification.

[0010]

【Example】

 Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings. As shown in the sectional view of FIG. 1, an optional carpet 1 for an automobile has a structure in which a fiber carpet layer 4 is laminated on a base material sheet 2 with an adhesive 3 interposed therebetween.

The optional carpet 1 for an automobile is formed in an appropriate plane shape corresponding to, for example, the floor on the driver's side of the automobile, and the outer surface of the base material sheet 2, which is the back surface thereof, is also shown in FIG. As described above, a large number of non-slip patterns (convex portions 5 in the figure) having an uneven shape are formed on the entire surface.

Here, the base material sheet 2 has a structure in which low density flexible urethane foam sheets 2b and 2c are laminated on both surfaces of a urethane chip sheet 2a, as shown in an enlarged cross section of FIG. ing. In the base material sheet 2 having such a structure, the protrusion amount of the circular convex portion 5 is about 1 mm, the thickness of the base portion excluding the circular convex portion 5 is about 2.5 mm, and the total thickness is about 3. It is 5 mm. The circular convex portion 5 has a diameter of, for example, about 10 mm, and the total area of the circular convex portion 5 occupies an area ratio of about 1/3 of the total area of the base material sheet 2.

The urethane chip sheet 2a is obtained by crushing wastes of soft urethane foam, processed scraps, etc. into chips, mixing the urethane prepolymer with the chips, and then spraying vapor to solidify the chips. is there. The urethane chip sheet 2a can be selected to have an appropriate thickness and density according to the performance required for the automobile optional carpet 1.

The low-density flexible urethane foam sheets 2b and 2c are used for the purpose of adding cushioning properties to the base material sheet 2 and improving the appearance. The low-density flexible urethane foam sheets 2b and 2c can also have appropriate thicknesses and densities depending on the performance required for the automobile optional carpet 1. The table below shows examples of main physical properties of the base material sheet 2.

[0015]

[Table 1]

In the automobile optional carpet 1 configured as described above, since the material of the base material sheet 2 is the urethane chip sheet 2a and the low-density soft urethane foam sheets 2b and 2c, which have appropriate air permeability, It has excellent cushioning properties, sound absorption properties, heat insulation properties, and is lightweight. Since a large number of circular convex portions 5 are formed on the entire outer surface of the base material sheet 2 having cushioning properties, higher cushioning properties can be obtained.

Further, since the urethane chip sheet 2a and the low-density flexible urethane foam sheets 2b and 2c, which form the base material sheet 2, have little flexibility deterioration even in cold regions or during cold weather, they are less likely to be curled. . Therefore, the optional carpet 1 for automobiles fits well with the floor carpets of automobiles, and since the non-slip pattern consisting of a large number of circular convex portions 5 is formed on the back surface in contact with the floor carpet, Misalignment is prevented.

Further, the urethane chip sheet 2a used for forming the base material sheet 2 is made into chips by crushing waste of soft urethane foam, processed end materials, scraps, etc., and compressing the chips together with the urethane prepolymer. Since it is cut and sliced from the urethane chip block, which is a recycled material obtained by solidification, it is useful for resource conservation. However, by appropriately selecting the thickness of the urethane chip sheet 2a, the weight, thickness, performance, etc. of the base material sheet 2 can be made desired.

The base material sheet 2 has a urethane chip sheet 2a as a base material, but both surfaces thereof are covered with the low-density soft urethane foam sheets 2b and 2c, so that the appearance is good, and particularly, the low-density soft upper layer is used. By designing the urethane foam sheets 2b and 2c as colored ones, the design effect can be exhibited.

In the above-mentioned embodiment, a large number of circular protrusions 5 are formed on the outer surface of the base material sheet 2 to form an anti-slip pattern. However, the anti-slip pattern is not limited to the circular protrusions 5, but a square The protrusions may have any suitable shape such as a rectangle, a triangle, a rhombus, a Y-shape, a chevron, and a corrugated shape. In any case, the protrusion amount and area of the convex portion forming the anti-slip pattern are appropriately set according to the correlation with the sliding characteristics, cushioning property, water absorption, abrasion resistance, tensile strength and the like. Usually, the thickness of the base portion of the base material sheet 2 is within the range of 1.5 to 3.5 mm, and the thickness of the convex portion is within the range of 2.0 to 5.5 mm (protrusion amount is 0.5 to 2.0 mm). Is preferred. The area of each convex portion is preferably 2 cm ² or less, and the total area of the convex portions is preferably in the range of 1/5 to 1/2 of the total area of the base material sheet 2.

[0021]

[Effect of device]

 As described above, according to the present invention, the following effects can be obtained. (1) Noise such as engine noise and gear noise can be reduced, and the heat insulation effect of the floor can be enhanced. In addition, it can be easily taken in and out for washing with water, etc., and due to proper air permeability and water permeability, moisture does not accumulate between the floor sheet. (2) Since the low density flexible urethane foam sheet and the urethane chip sheet can be provided with appropriate water repellency, the base material does not absorb a large amount of water. Further, even if dirt is attached, it can be easily removed. (3) When the foot is placed on the optional carpet, a soft feeling can be obtained. (4) Flexibility does not decrease even in cold regions and during cold weather, and fits well to floor carpets. In addition, it has high flexibility, does not cause curling, and does not cause cracks. (5) Due to the uneven anti-slip pattern formed on the back surface, the positional displacement with respect to the floor carpet is unlikely to occur. Further, the voids generated between the floor carpet and the unevenness improve the air permeability between the option carpet and the floor carpet, and the voids also improve the sound insulation. (6) Since it uses urethane chip sheet, it is suitable for recycling. Furthermore, since urethane chip sheet and low-density soft urethane foam sheet are used as base materials, excellent cushioning properties, sound absorbing properties, and heat insulating properties can be obtained, and at the same time, weight reduction can be achieved.

[Brief description of drawings]

FIG. 1 is a sectional structural view of an embodiment of an optional carpet for an automobile according to the present invention.

FIG. 2 is a back view of the embodiment.

FIG. 3 is an enlarged cross-sectional view of a base material sheet according to an embodiment.

[Explanation of symbols]

 1 Automotive Optional Carpet 2 Base Material Sheet 2a Urethane Chip Sheet 2b, 2c Low Density Soft Urethane Foam Sheet 3 Adhesive 4 Fiber Carpet Layer 5 Circular Convex

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Takashi Oi 677-44, Ota City, Gunma Prefecture (72) Inventor Yoshio Iwamoto 1-2-19 Isemachi, Ashikaga City, Tochigi Prefecture (72) Inventor Toshiaki Sugiura Gyoda, Saitama Prefecture 1739-9 Ichimochida (72) Ichiro Nakano 1-20-1 Fujiwara-cho, Gyoda-shi, Saitama Prefecture (72) Inventor Shun Kiyono 2 Takara-cho, Kanagawa-ku, Yokohama-shi, Kanagawa Nissan Motor Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. An optional carpet for an automobile, comprising a base material sheet and a fiber carpet layer laminated on the base material sheet, wherein the base material sheet has a structure in which a low density flexible urethane foam sheet is laminated on both sides of a urethane chip sheet. An optional carpet for automobiles, characterized in that a non-slip pattern having an uneven shape is formed on the outer surface of the base material sheet which is the back side of the.