JP2001128915A - Sponge for car wash - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sponge for car wash capable of preventing a surface to be cleaned from being damaged and preventing a user's hand or fingers from being injured with projections on the surface to be cleaned. SOLUTION: Plural cut lines 6, 6 with a prescribed depth are formed in parallel with each other with the center of two pairs of diagonal lines as the standard on both upper and lower sides of a rectangular parallelepiped sponge body 2 made of a flexible synthetic resin foaming material. The cut sides of each cut line 6 adhere to each other, so that the cut lines are not visible when the rectangular parallelepiped sponge body 2 is not deformed. In addition, since the cut lines 6, 6 cross each other, plural uniform rhombuses 7, 7 are formed on upper and lower sides of the rectangular parallelepiped sponge 2, and two kinds of plural isosceles triangles 11, 11 and 12, 12 with different interior angles are formed on longer sides 3 and on shorter sides 4 of the sponge body 2, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a car wash sponge used for washing automobiles and the like.

[0002]

2. Description of the Related Art Conventional sponges for car washing include a sponge having a bubble-like hole formed on the surface thereof, a sponge having a curable rubber or synthetic resin impregnated layer formed on the surface thereof, On the sponge surface portion, a groove having an uneven shape is formed in a grid pattern in a vertical and horizontal parallel line of the sponge,
(For example, proposed in Japanese Utility Model Application Laid-Open No. 54-72858), a sponge having a corrugated uneven surface is used.

[0003]

However, in the above-described conventional apparatus, sand adhering to a washing surface during a car washing operation,
Dirt such as mud, pebbles and the like could not be taken into the bubble-shaped hole or into the uneven shape. Therefore, as a result of performing the car washing operation while dragging dirt such as sand, mud, and pebbles sandwiched between the sponge and the cleaning surface, many deep scratches are made on the cleaning surface.

Further, when the cleaning surface is rubbed with a sponge having unevenness in the form of vertical and horizontal parallel lines, such as front and rear movement, left and right movement, and circular movement, one side of the grid-shaped uneven groove is washed. As a result of the parallel movement with respect to the surface, the coefficient of friction with respect to the cleaning surface increased, and the sponge itself damaged the cleaning surface.

In addition, the uneven portion is damaged in a short period of time, and a hole penetrates the front and back surfaces of the sponge, and the projection on the cleaning surface often injures the hand or finger.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to eliminate the above-mentioned drawbacks, and enables a washing operation without damaging the washing surface and at the same time, the sponge body for car washing is damaged at an early stage. It is an object of the present invention to provide a car wash sponge capable of preventing injuries to hands and fingers.

The sponge for car washing according to the present invention is a parallel sponge made of a synthetic resin foam having flexibility, and is provided on the upper surface and the lower surface of a rectangular parallelepiped sponge body at a constant distance based on the centers of two pairs of diagonal lines. A plurality of cuts having a constant depth are provided linearly, and the cuts are visually observed in a state where the cut sides are in close contact and the rectangular sponge body itself made of the synthetic resin foam is not deformed. It is impossible, and, by this plurality of cuts intersect, a plurality of uniform rhombic shapes on the upper and lower surfaces of the rectangular parallelepiped sponge body, the interior angle is different on the long side and the short side of the rectangular parallelepiped sponge body, It is characterized in that two types of plural isosceles triangular shapes are formed.

The car wash sponge of the present invention will be described in detail with reference to FIG. The car wash sponge 1 has a rectangular parallelepiped shape as shown in FIG. On the upper surface and the lower surface of the rectangular parallelepiped, a plurality of cross-shaped cuts 6, 6,... In which the cut sides are in close contact with each other are formed in parallel lines maintaining a constant interval based on the centers of two pairs of diagonals. It is formed at a certain depth.

The ratio of the long side 3 and the short side 4 to the thickness 5 of the rectangular sponge body 2 forming the car wash sponge 1 is long side 3: short side 4: thickness 5 = 100: 55 to 75: 13-25
Is preferred.

The upper and lower surfaces are formed by making a plurality of cross-shaped cuts 6, 6... To a fixed depth in a parallel line maintaining a fixed interval with reference to the centers of the two pairs of diagonal lines shown in FIG. Are formed, and a plurality of isosceles triangular shapes 11, 11,..., 12, 12,... Each having a different interior angle are formed.

When the long side 3 is set to 100 and the short side 4 is set to 55, the inner angles of the plurality of rhombus shapes 7, 7,... Are 58 ° 122 ° and the short side 4 is 75. In this case, the respective interior angles are 74 ° and 106 °, respectively. Also, the inner angles of the two types of isosceles triangular shapes 11, 11,..., 12, 12,.
When the short side 4 is set to 55 and the short side 4 is set to 55, the isosceles triangular shapes 11, 11,... Become 122 ° 29 ° 29 °, and the isosceles triangular shapes 12, 12,. When 4 is set to 75, isosceles triangular shapes 11, 11
Are 106 ° 37 ° 37 °, the isosceles triangular shapes 12, 12 are 74 ° 53 ° 53 °, and a plurality of rhombic shapes 7, 7,... The isosceles triangle shapes 11, 11 ... and 12, 12 ...
It is most preferable for reducing friction with the cleaning surface and removing dirt and the like.

A plurality of cuts 6, 6,... Formed diagonally on the upper surface and the lower surface of FIG. 1 are provided so as to reach from one side to one side of the rectangular parallelepiped.

The interval between the diagonally intersecting cuts 6 is preferably 5 mm to 20 mm. The depth of the plurality of cuts 6, 6,... Is a ratio of the dimension of the thickness 5 of the sponge body 2 to the depth of the cuts 6, 6,. preferable.

By forming a plurality of cuts 6, 6,... Which are not visible at the interval of the above range and the depth of the above range,
.., And two isosceles triangular shapes 11, 11,.
12 are formed. .., A plurality of rhombic shapes 7, 7,..., And two types of a plurality of isosceles triangular shapes 11, 11,.
Due to the synergistic action of 2 ..., dirt such as sand, mud, pebbles, etc. adhering to the cleaning surface can be cut into a plurality of cuts 6,
6... Can be easily sandwiched.

The plurality of cuts 6, 6,... Having the intervals and depths in the above ranges are preferably provided by, for example, sharp razor blades, and even when looking at the surface of the sponge body 2, the plurality of cuts 6, 6,. The line 6 is different from the shape of the groove which is often provided in the conventional car wash sponge and needs to be invisible. The above-mentioned conventional groove shape has the width and depth of the groove itself, a portion necessary for the width and depth of the groove is deleted, and the deleted uneven portion has a widely known groove shape. The width and the depth can be easily recognized by visual inspection in a state where the sponge itself is not deformed (for example, Japanese Utility Model Application Laid-Open No. 54-7285).
No. 8 discloses a groove of a cleaning sponge).

The present invention is not limited to the above-described embodiments. For example, the following embodiments are also included in the technical scope of the present invention. Can be implemented with various modifications. In FIG. 1, an example is shown in which a plurality of diagonal cuts 6, 6.
For example, instead of a straight line as shown in FIG. 1, notches in which a wavy shape, a small perfect circle, and an ellipse are connected in a chain shape are arranged diagonally on the upper surface and the lower surface in FIG. , And two types of isosceles triangular shapes 11, 11,..., 12, 12,.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with reference to FIG. As shown in FIG. 1, the car wash sponge 1 of this embodiment uses a flexible polyurethane foam foam board as a synthetic resin foam having flexibility, and has a long side 3 of 200 mm and a short side 4 of 130
mm, and the thickness 5 was cut out into a 30 mm rectangular parallelepiped sponge body 2.

On the upper surface and the lower surface, 34 cuts 6, 6,... Each having a length of 34 m are formed in parallel lines maintaining a distance of 13.2 mm with reference to the centers of two pairs of diagonals.
It was provided in a cross at a depth of m.

The cuts 6, 6,... Are each provided with only a sharp razor blade on each of the upper surface and the lower surface of the sponge body 2. Therefore, in the state where the cut sides are in close contact and the sponge body 2 is not deformed, the cuts 6, 6,...

Also, by providing the 34 crossed incisions 6, 6,... Which cannot be seen, the respective internal motions of the upper and lower surfaces are 114 ° and 66 °, respectively. ... 144 non-visible uniform rhombic shapes 7, 7 ... and 18 non-visible isosceles triangular shapes 11, 11 ... each having an internal angle of 114 ° 33 ° 33 °, each of which moves independently. Interior angle is 66
18 invisible isosceles triangular shapes 12, 12 each with independent movement with an angle of ° 57 ° 57 °
... are formed. Thereby, the rhombic shapes 7, 7
And the isosceles triangular shapes 11, 11,..., 12, 12,... Resulted in 324 invisible cut sides, and the resulting invisible cut angles were 684 places.

[0021]

Since the present invention is configured as described above, it has the following effects.

As shown in FIGS. 2 and 3, a plurality of rhombic shapes 7, 7,... Each of which independently moves on the upper surface, and a plurality of isosceles triangular shapes 11, 11,. , 12... Are formed, when the upper surface is pressed with the palms and fingers of the palm to perform the car washing operation, only the plurality of rhombic shapes 8, 8,. Put in. .. And a plurality of isosceles triangular shapes 11, 11, 12, 12,... Having different inner angles cover the periphery of the hand. . Thus, according to the sponge for the main car wash,
A car wash operation that can prevent injuries by directly hitting a hand or finger with a protrusion on a washing surface can be performed.

On the other hand, a plurality of rhombic shapes 7, 7,... Of the lower surface rubbing the cleaning surface, and a plurality of isosceles triangular shapes 11, 11,. Resistance is generated by rubbing the holding cleaning surface. Thereby,
The incision sides of the plurality of cuts 6, 6,... Formed in a cross shape that could not be visually observed are widened, and sand, mud,
Dirt such as pebbles can be captured.

By reducing the pressure of the hand pressing the upper surface and stopping the work of rubbing the cleaning surface, the plurality of cross-shaped cuts 6, 6,... In order to return to the original shape, dirt such as sand, mud, and pebbles can be sandwiched in the plurality of cuts 6, 6,. Accordingly, it is possible to perform a car washing operation without dragging dirt such as sand, mud and pebbles between the sponge 1 for car washing and the washing surface, and it is also possible to prevent the washing surface from being damaged.

Further, a plurality of uniform rhombic shapes 7, 7,...
Two types of plural isosceles triangle shapes 11, 1 having different interior angles
Are formed, a plurality of corners are formed on the upper and lower surfaces while maintaining the same angle.
This makes it possible to uniformly and efficiently remove dirt such as sand, mud, and pebbles adhered to the cleaning surface.

When the car washing operation is performed by the front and rear movement, the left and right movement, the circular movement and the like of the washing surface with the main car washing sponge 1, a plurality of rhombic shapes 7, 7... Preceded by a plurality of corners. this is,
The same effect as the commonly known ship touch is obtained,
Even if the cleaning surface is rubbed with the car wash sponge 1, the friction coefficient can be reduced.

Further, a plurality of rhombic shapes 7, 7,... And two types of isosceles triangular shapes 11, 11,.
, 12, 12,... Can be prevented from being damaged in a short time, and the car wash sponge 1 itself can be prevented from damaging the washing surface.
The car wash sponge 1 has a plurality of rhombic shapes 7, 7.
… And two different isosceles triangular shapes 1 with different interior angles
Since 1, 11,... And 12, 12,... Are formed on the upper surface and the lower surface, both surfaces can be used for car washing.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a car wash sponge of the present invention.

FIG. 2 is a perspective view showing a situation in which the car wash sponge of the present invention is used.

FIG. 3 is a side view showing a situation where the car wash sponge of the present invention is used.

[Explanation of symbols]

Reference Signs List 1 sponge for car washing 2 sponge body 3 long side of sponge body 4 short side of sponge body 5 thickness of sponge body 6 cut 7 rhombus shape formed by cut 8 sinking rhombus shape pressed by hand 9 sponge body Palm holding the top part 10 Finger belly holding the top part of the sponge body 11, 12 Isosceles triangular shape formed by cutting

Claims (1)

[Claims] 1. An upper surface and a lower surface of a rectangular parallelepiped sponge body made of a synthetic resin foam having flexibility, each of which is formed in a parallel line shape maintaining a certain interval based on the centers of two pairs of diagonal lines. A plurality of cuts maintaining the depth are provided, and the cuts are invisible in a state where the cut sides are in close contact and the rectangular sponge body itself made of the synthetic resin foam is not deformed, and ,
By crossing the cuts, a plurality of uniform rhombic shapes on the upper and lower surfaces of the rectangular parallelepiped sponge body, and two types of a plurality of isosceles triangular shapes having different interior angles on the long side and the short side of the rectangular parallelepiped sponge body, respectively. A sponge for car washing characterized in that a sponge is formed.