JP7048393B2 - Vehicle coating agent and car wash machine using it - Google Patents

Description

The present invention relates to a coating agent for a vehicle and a car wash machine that applies a coating agent to a vehicle to be washed.

A conventional car wash machine installed in a gas station or the like is disclosed in Patent Document 1. This car wash machine is equipped with a car wash machine body that moves in the front-rear direction with respect to the vehicle to be washed. The car wash machine main body has two opposite stand portions on the left and right and a ceiling portion connecting the upper ends of the stand portions, and is formed in a gate shape straddling the vehicle to be washed.

The car wash machine body is provided with a rotating brush, a washing nozzle and a coat nozzle. The rotary brush slides on the vehicle to be cleaned to clean the vehicle to be cleaned. The cleaning nozzle sprays cleaning water such as city water or detergent water onto the surface of the vehicle to be cleaned when cleaning the rotating brush. The coat nozzle sprays an aqueous solution of a water-repellent coating agent onto the surface of the vehicle to be cleaned.

In the car wash machine having the above configuration, when the car wash is started, the washing water is sprayed by the washing nozzle and the surface of the vehicle to be washed is washed by the rotating brush. When the cleaning of the vehicle to be cleaned is completed, the coating agent is sprayed from the coat nozzle. As a result, a film is formed on the surface of the vehicle to be cleaned by applying the coating agent.

A coating agent having water repellency is disclosed in Patent Document 2. This coating agent contains an amino-modified silicone oil and a nonionic surfactant or a cationic surfactant that emulsifies the amino-modified silicone oil, and is used after being diluted with water. Since the amino-modified silicone oil has high adsorptivity to organic substances and inorganic substances, water repellency can be obtained for the painted surface and the glass surface of the vehicle.

Japanese Unexamined Patent Publication No. 2013-95234 (pages 4 to 8, FIG. 3) Japanese Unexamined Patent Publication No. 2001-49189 (pages 2 to 5)

However, when the above-mentioned conventional coating agent is applied to a vehicle to be washed by a car wash machine, the wiper chattering occurs due to the coating of the coating agent formed on the window glass. Therefore, the user may not want the water repellency of the window glass. In addition, water-repellent water droplets may remain on the lens of the back camera attached to the vehicle to be washed, and the back camera may be diffusely reflected and monitoring may not be possible.

Further, water repellency can be obtained when a coating agent film is formed on the painted surface of the vehicle body, but when water droplets due to water repellency remain on the painted surface and are naturally dried, impurities in the water droplets are fixed. For this reason, the aesthetic appearance of the vehicle to be washed is spoiled, and if the fixed impurities are left unattended, it becomes difficult to remove them, which damages the surface of the vehicle body. Therefore, not only water repellency on the painted surface but also water flow is desired.

An object of the present invention is to provide a coating agent and a car wash machine that suppress the water repellency of the glass surface of a vehicle to be washed and obtain the water flowability of the painted surface.

In order to achieve the above object, the coating agent of the present invention comprises trimethylsiloxysilicic acid, a nonionic surfactant that emulsifies the trimethylsiloxysilicic acid, and a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms. It is characterized by containing an agent.

Further, the car wash machine of the present invention is characterized by being provided with a first coat nozzle that injects the coating agent having the above configuration and moves relative to the vehicle to be washed in the front-rear direction.

Further, the present invention is characterized in that, in the car wash machine having the above configuration, the injection pressure of the coating agent injected from the first coat nozzle is 2 MPa or more.

Further, in the car wash machine having the above configuration, the present invention includes a car wash machine main body that moves relative to the car to be washed in the front-rear direction, a rotary brush that is arranged on the car wash machine main body to wash the car to be washed, and the rotation. A cleaning nozzle that sprays cleaning water onto the vehicle to be cleaned during cleaning with a brush is provided, and the first coat nozzle is provided in the car wash machine main body, and after cleaning with the rotary brush, a coating agent is applied by the first coat nozzle. A first coating step for coating and a second coating step for applying the coating agent by the first coating nozzle after the first coating step are provided, and the moving speed of the car wash machine main body in the first coating step is set to the first. 2 It is characterized in that the speed is slower than the moving speed of the car wash machine main body in the coating process.

Further, the present invention is characterized in that, in the car wash machine having the above configuration, the vehicle to be washed is washed with water by the washing nozzle after the coating agents in the first coating step and the second coating step are applied.

Further, the present invention is characterized in that, in the car wash machine having the above configuration, the number of times the coating agent is applied to the front part of the vehicle to be washed by the first coated nozzle is larger than the number of times the coating agent is applied to the rear part.

Further, according to the present invention, in the car wash machine having the above configuration, the first coat nozzle has an upper surface portion for injecting onto the upper surface of the vehicle to be washed and a side surface portion for injecting into the side surface, and the injection pressure of the upper surface portion is the side surface portion. It is characterized by being lower than the injection pressure of.

Further, the present invention is characterized in that, in the car wash machine having the above configuration, the injection angle of the upper surface portion is larger than the injection angle of the side surface portion.

Further, according to the present invention, the car wash machine having the above configuration includes a blower nozzle that blows air toward the vehicle to be washed, and blows air from the blower nozzle between the cleaning with the rotary brush and the first coating step. It is characterized by providing a step of drying.

Further, the present invention comprises a second coat nozzle that injects a coating agent having a higher adsorptivity to glass than the coating agent ejected from the first coat nozzle in the car wash machine having the above configuration, and is used for cleaning with the rotary brush and the above. It is characterized in that a step of applying a coating agent by the second coating nozzle is provided between the first coating step.

Further, the present invention is characterized in that, in the car wash machine having the above configuration, the coating agent sprayed from the second coat nozzle contains an amino-modified polysiloxane and at least one of a nonionic surfactant and a cationic surfactant. It is supposed to be.

According to the present invention, it is possible to suppress the water repellency of the glass surface and obtain the water repellency and water flow of the painted surface.

Side view showing the car wash machine of 1st Embodiment of this invention Front view showing the car wash machine of the first embodiment of the present invention The side view which shows the 1st outbound process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 1st return process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 2nd outbound process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 2nd return process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 3rd outbound process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 3rd return process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 4th outbound process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 4th return process of the 1st running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 1st return process of the 2nd running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 2nd return process of the 2nd running water coat course of the car wash machine of 1st Embodiment of this invention. The side view which shows the 1st outbound process of the 2nd running water coat course of the car wash machine of 2nd Embodiment of this invention. The side view which shows the 1st return process of the 2nd running water coat course of the car wash machine of 2nd Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a side view and a front view showing the car wash machine WA of the first embodiment. The car wash machine WA includes a car wash machine main body 1, a rail 2, and a remote panel 7. The car wash machine main body 1 is formed in a gate shape having two left and right facing stand portions 90 and a ceiling portion 91 connecting the upper ends of the stand portions 90.

A pair of left and right rails 2 are provided on the ground G, and wheels 3 provided on the bottom surface of the stand portion 90 are arranged on the rail 2. As a result, the car wash machine main body 1 is erected on the rail 2, travels on the rail 2 by the drive of a traveling motor (not shown), and moves back and forth with respect to the vehicle to be washed CA.

The remote panel 7 is arranged along the approach route A to the car wash machine main body 1. The remote panel 7 has a plurality of buttons and sets car wash conditions. In addition, the remote panel 7 can be used to set equipment such as a front guard, a fender pole, a side mirror, a rear wiper, and a roof carrier.

An operation panel 8 is arranged in front of one stand portion 90 of the car wash machine main body 1. The operation panel 8 can set car wash conditions in the same manner as the remote panel 7.

A shape sensor 9 is provided on the entrance surface 1a side between the two stands 90 of the car wash machine main body 1. The shape sensor 9 is composed of a photoelectric sensor, an ultrasonic sensor, or the like, and detects the outer surface shape of the vehicle to be washed CA that enters the car wash machine main body 1.

The car wash machine main body 1 is provided with a plurality of rotary brushes that slide and brush on the vehicle CA to be washed. The rotating brush consists of a top brush 4, a side brush 5 and a rocker brush 6.

The top brush 4 is provided on the ceiling portion 91 so as to be able to move up and down, and rotates on a horizontal rotation axis to clean the upper surface CA1 of the vehicle CA to be cleaned. The side brush 5 is provided on the exit surface 1b side of both stand portions 90 so as to be able to advance and retreat in the left-right direction, and rotates on a vertical rotation axis to clean both side surfaces and the rear surface of the vehicle CA to be cleaned. The rocker brush 6 is provided at the lower part of both stand portions 90 so as to be able to advance and retreat in the left-right direction, and rotates on a vertical or horizontal rotation axis to wash the lower parts of both side surfaces of the vehicle CA to be washed.

A blower 20 that generates an air flow is arranged above the car wash machine main body 1. A plurality of blow nozzles for sending an air flow toward the vehicle to be cleaned CA are connected to the blower 20. The blower nozzle is composed of a top blower nozzle 21 and a side blower nozzle 22.

The top blower nozzle 21 is provided on the ceiling portion 91 so as to be able to move up and down, and moves along the upper surface CA1 and the rear surface of the vehicle to be cleaned CA to dry the upper surface CA1 and the rear surface by blowing air. The side blow nozzles 22 are provided on both stand portions 90, respectively, and the side surfaces of the vehicle CA to be cleaned are dried by blowing air.

The stand unit 90 is provided with a tank storage unit 30 that stores a plurality of liquid storage tanks (not shown) that store various liquid agents such as detergents and coating agents. Above the tank storage unit 30, a distribution piping unit 31 for distributing city water and liquids from each liquid storage tank is provided. A shampoo nozzle 11, a water purification nozzle 12, 13, a wax nozzle 15, and a coat nozzle 40 to 44 are respectively led out to the distribution pipe portion 31 via a solenoid valve (not shown).

The shampoo nozzle 11 is provided on the ceiling portion 91 and, although not shown, is provided on both stand portions 90. Further, the shampoo nozzle 11 is arranged between the inlet surface 1a and the top brush 4, and injects cleaning water composed of an aqueous solution of detergent to clean the vehicle CA to be cleaned. As a result, the shampoo nozzle 11 functions as a cleaning nozzle for cleaning the vehicle CA to be cleaned.

The water purification nozzles 12 and 13 are provided on the ceiling portion 91 and, although not shown, are provided on both stand portions 90. The water purification nozzle 12 is arranged between the shampoo nozzle 11 and the inlet surface 1a, and the water purification nozzle 13 is arranged between the top brush 4 and the outlet surface 1b. The water purification nozzles 12 and 13 inject wash water composed of city water to the vehicle CA to be washed. The water purification nozzles 12 and 13 are used to wash the vehicle to be cleaned by washing with water, and also to rinse with detergent and a coating agent described later. As a result, the water purification nozzles 12 and 13 function as cleaning nozzles for cleaning the vehicle CA to be cleaned.

The wax nozzle 15 is provided on the ceiling portion 91 and, although not shown, is provided on both stand portions 90. Further, the wax nozzle 15 is arranged between the water purification nozzle 13 and the outlet surface 1b, and sprays an aqueous solution of wax for polishing.

The coat nozzles 40, 41, 42 (first coat nozzle) inject an aqueous solution of a coating agent (hereinafter referred to as "first coating agent") that imparts water repellency and water flow to the coated surface of the vehicle to be cleaned CA.

A plurality of coat nozzles 40 (upper surface portions) are provided on the ceiling portion 91 (two in the present embodiment), and are formed so as to be swingable in the left-right direction. Further, the coat nozzle 40 injects the first coating agent toward the upper surface of the vehicle CA to be cleaned at a high injection pressure (for example, 2 MPa to 3 MPa). The coat nozzles 41 and 42 (side surface portions) are arranged on the stand portion 90 and inject the first coating agent toward the side surface of the vehicle CA to be cleaned. The upper coat nozzle 41 is formed so as to be swingable in the vertical direction.

Further, the injection angle θ of the coat nozzle 40 (see FIG. 7) is set to, for example, 30 °, and the injection angle θ of the coat nozzles 41 and 42 is set to be smaller than that of the coat nozzle 40, for example, 15 °. Since the pressure loss increases when the injection angle θ is large, the injection pressure of the coat nozzle 40 is lower than the injection pressure of the coat nozzles 41 and 42.

When the concentration of the coating agent is increased by evaporating the aqueous solution of water, the coating agent easily adheres to the vehicle CA to be cleaned. Since the vehicle height differs depending on the vehicle type of the vehicle to be cleaned CA, the coat nozzle 40 is arranged away from the ceiling surface of the vehicle to be cleaned CA. Further, the bonnet portion of the vehicle to be cleaned CA is further separated from the coat nozzle 40. Therefore, if the injection angle θ is increased to disperse the first coating agent, water can be evaporated before reaching the vehicle CA to be cleaned. As a result, a film of the first coating agent can be formed on the upper surface of the vehicle CA to be cleaned.

On the other hand, since the coat nozzles 41 and 42 are close to the side surface of the vehicle CA to be cleaned, the water in the aqueous solution of the first coating agent is unlikely to evaporate. Further, since the aqueous solution of the first coating agent sprayed from the coat nozzles 41 and 42 flows down the side surface of the vehicle CA to be cleaned, it is difficult to adhere. Therefore, by increasing the injection pressure of the coat nozzles 41 and 42, the first coating agent can be made to collide with the side surface of the vehicle to be cleaned CA at high pressure to form a film.

The coat nozzles 43 and 44 (second coat nozzle) inject an aqueous solution of a coating agent (hereinafter referred to as "second coating agent") having higher adsorptivity than the first coating agent.

A plurality of coat nozzles 43 (two in this embodiment) are provided on the ceiling portion 91. The coat nozzle 43 injects the second coating agent toward the upper surface of the vehicle CA to be cleaned at a high injection pressure (for example, 2 MPa to 3 MPa). The coat nozzle 44 is arranged on the stand portion 90 and injects the second coating agent toward the side surface of the vehicle CA to be cleaned. The second coating agent may be injected from the coat nozzle 43 at an injection pressure lower than 2 MPa.

Further, the injection angles θ (see FIG. 7) of the coat nozzles 43 and 44 are set to, for example, 95 °. Since the injection angles θ are the same, the injection pressures of the coat nozzles 43 and 44 are also the same.

The wax nozzle 15 and the coat nozzles 40 to 44 can inject city water by stopping the supply of the liquid agent, and can function as a cleaning nozzle.

The first coating agent ejected from the coat nozzles 40 to 42 consists of an aqueous solution containing trimethylsiloxysilicic acid, a nonionic surfactant, and a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms. ing. A low temperature stabilizer, an emulsion stabilizer, a preservative, a pH adjuster, or the like may be added to the first coating agent as long as the characteristics are not impaired. Further, silicone oil may be added to the first coating agent in order to improve water repellency.

Trimethylsiloxysilicic acid forms a water-repellent and water-flowing film. Nonionic surfactant emulsifies trimethylsiloxysilicic acid. As nonionic surfactants, polyoxyethylene alkyl ether, polyoxyalkylene alkyl ether, polyoxyethylene alkyl phenyl ether, polyhydric alcohol fatty acid ester, polyoxyethylene polyhydric alcohol fatty acid ester, polyoxyethylene fatty acid ester, polyglycerin A fatty acid ester, an alkylamine oxide, or the like can be used.

The cationic surfactant enhances the adsorptivity of the first coating agent containing trimethylsiloxysilicic acid, which has low adsorptivity, and forms a film of the first coating agent on the surface of the vehicle to be cleaned. The coating of the first coating agent containing trimethylsiloxysilicic acid has a water flow with low sliding friction with respect to water. Since the film of the first coating agent has not only water repellency having a large contact angle due to surface tension but also water flow, the water remaining on the vehicle CA to be washed is reduced.

At this time, if the cationic surfactant has a saturated hydrocarbon group having 12 to 18 carbon atoms, it is possible to suppress water repellency on the glass surface and form a water-repellent and water-flowing film on the coated surface. .. As a result, water repellency and water flow are obtained on the painted surface, and water repellency on the glass surface is suppressed.

Dodecyltrimethylammonium chloride, tetradecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium chloride, didodecyldimethylammonium chloride, ditetradecyl chloride as cationic surfactants having a saturated hydrocarbon group having 12 to 18 carbon atoms. Dimethylammonium, dihexadecyldimethylammonium chloride, dioctadecyldimethylammonium chloride, dodecylamine acetate, dodecylamine hydrochloride, tetradecylamine acetate, tetradecylamine hydrochloride, hexadecylamine acetate, hexadecylamine hydrochloride, Octadecylamine acetate, octadecylamine hydrochloride, etc. can be used.

The second coating agent ejected from the coat nozzles 43 and 44 is composed of an aqueous solution containing amino-modified polysiloxane as a main component and containing at least one of a nonionic surfactant and a cationic surfactant. The second coating agent may contain a low temperature stabilizer, an emulsion stabilizer, a preservative, a pH adjuster and the like as long as the characteristics are not impaired.

The amino-modified polysiloxane forms a highly adsorptive, water-repellent film. Nonionic and cationic surfactants emulsify amino-modified polysiloxanes. As a result, the film of the second coating agent has water repellency.

As the nonionic surfactant, the same surfactant as the first coating agent can be used. As the cationic surfactant, an amine salt type or a quaternary ammonium salt type surfactant can be used.

Since the second coating agent contains an amino-modified polysiloxane as a main component, it has higher adsorptivity than the first coating agent and can form a film on the glass surface and the coated surface. Further, since the film of the second coating agent having high adsorptivity has a binder effect, the film of the first coating agent can be formed on the film of the second coating agent.

In the car wash machine WA having the above configuration, the user drives and stops the vehicle CA to be washed in front of the remote panel 7, and the car wash conditions of the vehicle CA to be washed are set from within the vehicle CA to be washed. After setting the car wash conditions, the user moves the car to be washed CA to a predetermined wash start position.

By operating the remote panel 7, it is possible to select a washing course, a shampoo course, a wax course, a first running water coat course, and a second running water coat course. In the water washing course, the rotating brush is rotated to inject city water washing water from the water purification nozzles 12, 13, etc., and the vehicle CA to be washed is washed with water. In the shampoo course, the rotating brush is rotated to inject washing water containing detergent from the shampoo nozzle 11 to wash the vehicle CA to be washed. At this time, the washing water of the city water is sprayed from the water purification nozzles 12, 13 and the like to rinse the detergent.

In the wax course, the vehicle CA to be washed is washed in the same manner as the shampoo course, and then wax is applied to the vehicle CA to be washed by the wax nozzle 15. In the first running water coat course, the first coating agent is applied after cleaning the vehicle CA to be washed in the same manner as the shampoo course. In the second running water coat course, the second coating agent and the first coating agent are applied after cleaning the vehicle to be washed in the same manner as the shampoo course.

3 to 10 are side views showing a car wash state of the first running water coat course. When the first running water coat course is selected and the car wash is started, as shown in FIG. 3, the car wash machine main body 1 is behind the vehicle to be washed CA (arrow E1) at a predetermined traveling speed (for example, 5 m / min). After moving, the first outbound process is performed. In the first outbound process, while the shape sensor 9 detects the shape of the vehicle CA to be cleaned, each rotating brush rotates to clean the front and rear surfaces and the upper surface of the vehicle CA to be cleaned.

At this time, the washing water S1 containing the detergent is sprayed from the shampoo nozzle 11 preceding the rotating brush. Further, the city water wash water S2 is sprayed from the coat nozzles 40, 41, 42 preceding the shampoo nozzle 11, and the city water wash water S2 is sprayed from the clean water nozzle 13 following the top brush 4.

When the washing to the rear surface of the vehicle to be washed CA is completed, the first return route step is performed in which the car wash machine main body 1 is inverted and moved to the front of the vehicle to be washed CA (arrow E2) as shown in FIG. In the first return step, the washing water S2 is ejected from the water purification nozzle 13 while the rotating brush is rotating, and the detergent is rinsed and washed by washing with water.

When the first return route process is completed, as shown in FIG. 5, the second outward route process is performed in which the car wash machine main body 1 is inverted and moved to the rear (arrow E1) of the vehicle to be washed CA. In the second outward trip step, the washing water S2 of the city water is sprayed from the wax nozzle 15 and the coat nozzles 43 and 44 while the rotating brush is rotating, and the detergent is rinsed and washed in the same manner as in the first return trip step.

In the first return route process and the second outward route process, the car wash machine main body 1 moves at the same traveling speed as the first outward route process. Since the rinsing washing is performed in the two steps of the first inbound process and the second outbound process, the traveling speed of the car wash machine main body 1 in the first inbound process and the second outbound process may be set to be higher than that in the first outbound process.

With the end of the second outbound process, the cleaning process of the vehicle CA to be cleaned is completed, and the rotary brush is stopped. Next, as shown in FIG. 6, a second return route step is performed in which the car wash machine main body 1 is inverted and moved to the front (arrow E2) of the vehicle to be washed CA. In the second return process, the air flow A1 is sent from the top blower nozzle 21 and the side blower nozzle 22 to dry the vehicle CA to be washed. At this time, the car wash machine main body 1 moves at the same traveling speed as the first outbound process. The traveling speed of the car wash machine main body 1 may be set to be higher than that of the first outbound process.

As a result, the second return step forms a pre-drying step of drying the vehicle CA to be washed. By providing the pre-drying step, the adsorptivity of the coating agent to the vehicle CA to be cleaned can be improved.

When the second return route process is completed, as shown in FIG. 7, a third outward route process is performed in which the car wash machine main body 1 is inverted and moved to the rear (arrow E1) of the vehicle to be washed CA. In the third outbound process, the first coating agent S3 is sprayed from the coat nozzles 40, 41, 42, and the cleaning water S2 of city water is sprayed from the wax nozzle 15.

The first coating agent S3 sprayed from the coat nozzles 40, 41, 42 is applied to the surface of the vehicle CA to be cleaned while removing the water film remaining on the vehicle CA to be cleaned by the cleaning step. Since the first coating agent S3 has low adsorptivity to glass, a film of the first coating agent S3 is formed on the painted surface by preventing the formation of a film on the window glass and the back camera. As a result, the third outbound process forms the first coating step of applying the first coating agent S3 to the vehicle CA to be cleaned.

At this time, the car wash machine main body 1 moves at a relatively low speed (for example, 5 m / min). Therefore, the water film on the vehicle CA to be cleaned can be reliably removed to form a film of the first coating agent S3.

Further, since the washing water S2 of the city water is sprayed from the wax nozzle 15 following the coat nozzles 40, 41, 42, the excess first coating agent S3 is removed. This makes it possible to prevent uneven coating of the first coating agent S3.

When the third outbound process is completed, as shown in FIG. 8, the third inbound process is performed in which the car wash machine main body 1 is inverted and moved to the front (arrow E2) of the vehicle to be washed CA. In the third return step, the first coating agent S3 is sprayed from the coat nozzles 40, 41, 42, and the cleaning water S2 of city water is sprayed from the water purification nozzle 12.

As a result, the first coating agent S3 is applied onto the film of the first coating agent S3 formed in the third outward step (first coating step). Therefore, the film thickness of the film of the first coating agent S3 can be increased. Further, the excess first coating agent S3 is removed by the washing water S2 ejected from the water purification nozzle 12. Therefore, the third return step forms a second coating step of applying the first coating agent S3 to the vehicle CA to be cleaned.

At this time, the car wash machine main body 1 moves at a higher speed (for example, 8 m / min) than the third outbound process (first coating process). Since the first coating agent S3 is applied on the coating film formed in the third outbound process, the film thickness of the coating film can be surely increased even if the car wash machine main body 1 is moved at high speed. In addition, the excessive application of the first coating agent S3 can be reduced, and the time required for the third return trip step can be shortened, so that the car wash time can be shortened.

The moving speed of the car wash machine main body 1 in the third return step (second coating step) may be slower than that in the third outward step (first coating step). As a result, the time for the third outbound process is shortened, so that the car wash time can be shortened.

When the third return route process is completed, as shown in FIG. 9, the fourth outward route process is performed in which the car wash machine main body 1 is inverted and moved to the rear (arrow E1) of the vehicle to be washed CA. In the fourth outbound process, the first coating agent S3 is sprayed from the coat nozzles 40, 41, 42.

As a result, the first coating agent S3 is applied onto the film of the first coating agent S3 formed in the third return step (second coating step). Therefore, the fourth outbound process forms a third coating step of applying the first coating agent S3 to the vehicle CA to be cleaned.

The fourth outbound process ends when the coat nozzles 40, 41, and 42 reach the front end of the windshield by the detection of the shape sensor 9.

When the fourth outward route process is completed, as shown in FIG. 10, the fourth return route process is performed in which the car wash machine main body 1 is inverted and moved to the front (arrow E2) of the vehicle to be washed CA. In the fourth return step, the first coating agent S3 is continuously sprayed from the coat nozzles 40, 41, 42.

As a result, the first coating agent S3 is applied onto the film of the first coating agent S3 formed in the fourth outward step (third coating step). Therefore, the fourth return step forms a fourth coating step of applying the first coating agent S3 to the vehicle CA to be cleaned.

In the fourth outward route step and the fourth return route step, the first coating agent S3 is applied to the front portion of the vehicle CA to be cleaned in front of the windshield. Therefore, the number of times the first coating agent S3 is applied to the front part of the vehicle CA to be cleaned is larger than the number of times to apply the first coating agent S3 to the rear part. The surface of the front part of the vehicle to be cleaned CA is easily damaged by the collision of flying stones and insects, and the adsorptivity of the first coating agent S3 is lowered. By increasing the number of times the first coating agent S3 is applied to the front portion of the vehicle CA to be cleaned, a coating film of the first coating agent S3 can be sufficiently formed on the front portion of the vehicle CA to be cleaned.

Further, in the fourth outward path step and the fourth return path process, the car wash machine main body 1 moves at a higher speed (for example, 12 m / min) than the third return path step (second coating step). Since the first coating agent S3 is applied on the film formed in the third return step, the film thickness of the film can be surely increased even if the car wash machine main body 1 is moved at high speed.

When the fourth inbound process is completed, the fifth outbound process is performed. The fifth outbound step is performed in the same manner as the third outbound step shown in FIG. 7 described above. That is, in the fifth outbound process, the first coating agent S3 is sprayed from the coat nozzles 40, 41, 42, and the cleaning water S2 of the city water is sprayed from the wax nozzle 15.

As a result, the first coating agent S3 is applied onto the film of the first coating agent S3 formed in the third return step (second coating step) or the fourth return step (fourth coating step). Therefore, the fifth outbound process forms a fifth coating step of applying the first coating agent S3 to the vehicle CA to be cleaned.

At this time, the car wash machine main body 1 moves at a higher speed (for example, 12 m / min) than the third return path step (second coating step). Since the first coating agent S3 is applied onto the film formed in the third return step or the fourth return step, the film thickness of the film can be surely increased even if the car wash machine main body 1 is moved at high speed.

When the fifth outward route process is completed, the fifth return route process is performed. The fifth return step is performed in the same manner as the second return step shown in FIG. 6 described above. That is, the air flow A1 is sent from the top blower nozzle 21 and the side blower nozzle 22 to dry the vehicle CA to be washed, and the car wash is completed. As a result, the fifth return step forms a drying step of drying the vehicle CA to be washed.

At this time, the car wash machine main body 1 moves at a higher speed than the second return path step (preliminary drying step). Since the film of the first coating agent S3 is formed on the coated surface, water droplets can easily flow. Therefore, even if the car wash machine main body 1 is moved at high speed, the vehicle to be washed CA can be sufficiently dried, and the car wash time can be shortened.

Next, the operation of the second running water coat course will be described. When the second running water coat course is selected and the car wash is started, the first outbound process is performed in the same manner as in FIG. 3 described above. When the washing to the rear surface of the vehicle to be washed CA is completed, the first return route step is performed in which the car wash machine main body 1 is inverted and moved to the front of the vehicle to be washed CA (arrow E2) as shown in FIG.

In the first return step, the washing water S2 is sprayed from the water purification nozzles 12 and 13 while the rotating brush rotates, and the detergent is rinsed and washed. As will be described later, the second running water coat course omits the pre-drying step (see FIG. 6) provided in the first running water coat course. Therefore, in addition to the water purification nozzle 13, the cleaning water S2 is sprayed from the water purification nozzle 12 to improve the rinsing performance as compared with the first running water coat course.

When the first inbound process is completed, the second outbound process is performed in the same manner as in FIG. 5 described above. When the second outward route process is completed, as shown in FIG. 12, a second return route process is performed in which the car wash machine main body 1 is inverted and moved to the front (arrow E2) of the vehicle to be washed CA. In the second return step, the second coating agent S4 is sprayed from the coat nozzles 43 and 44, and the washing water S2 made of city water is sprayed from the water purification nozzle 12.

Since the second coating agent S4 has high adsorptivity, a film of the second coating agent S4 is formed on the window glass and the painted surface.

At this time, the car wash machine main body 1 moves at a relatively low speed (for example, 5 m / min). Therefore, the water film on the vehicle CA to be cleaned can be reliably removed to form a film of the second coating agent S4.

Further, since the cleaning water S2 of the city water is sprayed from the water purification nozzle 12 following the coat nozzles 43 and 44, the excess second coating agent S4 is removed. This makes it possible to prevent uneven coating of the second coating agent S4.

When the second return route process is completed, the third outward route process to the fifth return route process are performed in the same manner as the first running water court course (see FIGS. 7 to 10), and the car wash is completed. As a result, a film of the first coating agent S3 is formed on the window glass and the painted surface using the film of the second coating agent S4 as a base.

A pre-drying step similar to that of the first running water coating course may be provided before the second return step of applying the second coating agent S4.

According to the present embodiment, the first coating agent S3 contains trimethylsiloxysilicic acid, a nonionic surfactant, and a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms. As a result, the water repellency on the glass surface can be suppressed to obtain hydrophilicity, and the water repellency and water flow on the painted surface can be obtained.

Therefore, it is possible to suppress chattering of the wiper and formation of an oil film on the window glass, and it is possible to prevent diffused reflection of the back camera. Further, since water flows down on the painted surface, the drying ability in the drying process can be improved as compared with the water-repellent film in which water droplets stay, and the labor for wiping after washing the car can be reduced. Further, since water droplets do not remain when it rains, it is possible to reduce the adhesion of rain stains and stains on the painted surface.

Further, by setting the injection pressure of the first coating agent injected from the coat nozzles 40, 41, 42 (first coat nozzle) to 2 MPa or more, the hydrophilicity on the glass surface and the water flow on the coated surface are surely ensured. Obtainable.

Further, a first coating step (third outward path step) and a second coating step (third return path step) for applying the first coating agent S3 are provided, and the car wash machine main body 1 in the first coating step is more than the second coating step. The movement speed has been reduced. As a result, the car wash machine main body moves at a low speed in the first coating step, and the first coating agent S3 sprayed from the coat nozzles 40, 41, 42 (first coat nozzle) removes the water film on the vehicle CA to be washed. While being applied to the surface of the vehicle CA to be cleaned. Further, after a predetermined time has passed after the film formation by the first coating step, the first coating agent S3 is coated on the film in the second coating step.

Therefore, the film of the first coating agent S3 can be formed more reliably. Further, since the car wash machine main body 1 moves at high speed in the second coating step, it is possible to reduce the excessive coating of the first coating agent and shorten the car wash time.

Similarly, since the third to fifth coating steps (fourth outbound step to fifth outbound step) are provided, the first coating agent S3 is applied on the coating after a predetermined time has passed after the coating was formed by the second coating step. It is applied. As a result, the film of the first coating agent S3 can be formed more reliably.

Further, since the car wash machine main body 1 moves at a higher speed in the third to fifth coating steps than in the second coating step, excessive coating of the first coating agent S3 can be reduced and the car wash time can be further shortened.

Further, the washing water S2 of the city water is sprayed by the wax nozzle 15 following the coat nozzles 40, 41, 42 in the third outward step (first coating step). Similarly, the city water wash water S2 is sprayed by the water purification nozzle 12 following the coat nozzles 40, 41, 42 in the third return step (second coating step) and the fifth outward step (fifth coating step). .. As a result, the vehicle CA to be washed is washed with water after the application of the first coating agent S3 in each step. Therefore, the excess first coating agent S3 is removed, and uneven coating of the first coating agent S3 can be prevented to form a uniform film.

Further, in the fourth outward route step and the fourth return route step, the number of times the first coating agent S3 is applied to the front part of the vehicle CA to be cleaned is larger than the number of times the first coating agent S3 is applied to the rear part. Therefore, the film of the first coating agent S3 can be reliably formed on the front portion of the vehicle CA to be cleaned, whose surface is easily damaged and the adsorptivity of the first coating agent S3 is low.

Further, the injection pressure of the coat nozzle 40 (upper surface portion) for injecting the first coating agent S3 is smaller than the injection pressure of the coat nozzles 41 and 42 (side surface portion). As a result, the first coating agent S3 can be dispersed and sprayed by the coat nozzle 40, and a film of the first coating agent S3 can be reliably formed on the upper surface of the vehicle CA to be cleaned far from the coat nozzle 40. Further, the first coating agent S3 can be made to collide with the side surface of the vehicle CA to be cleaned close to the coat nozzles 41 and 42 at high pressure to surely form a film of the first coating agent S3.

Further, since the injection angle θ of the coat nozzle 40 (upper surface portion) is larger than the injection angle θ of the coat nozzles 41 and 42 (side surface portion), the injection pressure of the coat nozzle 40 (upper surface portion) is applied to the coat nozzles 41 and 42 (side surface portion). It can be easily made smaller than the injection pressure of the part).

In addition, since a pre-drying step (second return step of the first running water coating course) was provided between the cleaning with the rotary brush and the first coating step, the coating of the first coating agent S3 having low adsorptivity was applied on the coated surface. Can be easily formed.

Further, the step of applying the second coating agent S4, which has higher adsorptivity than the first coating agent S3, by the coat nozzles 43 and 44 (second coat nozzle) (second return step of the second running water coat course) is performed by a rotating brush. It was provided between the cleaning and the first coating step. As a result, the film of the second coating agent S4 forms a base, and the film of the first coating agent S3 is formed on the film of the second coating agent S4. Therefore, the water repellency of the window glass can be obtained according to the user, and the film of the first coating agent S3 on the painted surface can be more reliably formed.

Further, since the second coating agent S4 contains an amino-modified polysiloxane and at least one of a nonionic surfactant and a cationic surfactant, the base of the first coating agent S3 is formed on the window glass and the painted surface. The second coating agent S4 can be easily realized.

<Second Embodiment>
Next, the second embodiment will be described. In this embodiment, the operation of the second running water coat course is different from that in the first embodiment. Other parts are the same as those in the first embodiment.

When the second running water coat course is selected and the car wash is started, as shown in FIG. 13, the car wash machine main body 1 is behind the vehicle to be washed CA (arrow E1) at a predetermined traveling speed (for example, 5 m / min). The moving first outbound process is performed.

At this time, the washing water S1 containing the detergent is sprayed from the shampoo nozzle 11 preceding the rotating brush. Further, the wash water S2 of the city water is sprayed from the coat nozzles 40, 41, 42 preceding the shampoo nozzle 11. The city water wash water S2 is sprayed from the water purification nozzle 13 and the wax nozzle 15 following the top brush 4. The detergent is rinsed by the washing water S2 sprayed from the water purification nozzle 13 and the wax nozzle 15.

When the washing to the rear surface of the vehicle to be washed CA is completed, the first return route step is performed in which the car wash machine main body 1 is inverted and moved to the front (arrow E2) of the vehicle to be washed CA as shown in FIG. In the first return process, the rotating brush rotates, and the city water wash water S2 is sprayed from the water purification nozzle 12. Further, the second coating agent S4 is sprayed from the coat nozzles 43 and 44.

The water film on the vehicle CA to be cleaned is removed by the rotating brush, and a film of the second coating agent S4 is formed on the vehicle CA to be cleaned by the coat nozzles 43 and 44 following the rotating brush. Further, the excess second coating agent S4 is removed by the washing water S2 ejected from the water purification nozzle 12.

When the first inbound step is completed, the second outbound step to the fourth inbound step are performed in the same manner as in the third outbound step to the fifth inbound step of the first embodiment. This completes the car wash.

According to this embodiment, the same effect as that of the first embodiment can be obtained. Further, since the second coating agent S4 is sprayed from the coat nozzles 43 and 44 following the rotating brush in the first return step, the car wash time can be shortened.

Hereinafter, examples formed for evaluating the first coating agent will be described.

The first coating agent of Example 1 was a silicone resin emulsion (manufactured by Toray Dow Corning Co., Ltd., BY22-736EX) in which trimethylsiloxysilicic acid and silicone oil were emulsified with a nonionic surfactant, and dodecyltrimethylammonium chloride (dodecyltrimethylammonium chloride). Contains Lipocard (registered trademark) C-50) manufactured by Lion Specialty Chemicals Co., Ltd. Dodecyltrimethylammonium chloride is a cationic surfactant having a saturated hydrocarbon group having 12 carbon atoms and is solid at room temperature.

After mixing the silicone resin emulsion and the cationic surfactant, ion-exchanged water was added and stirred to obtain the first coating agent of Example 1. The mixing ratio of the first coating agent of Example 1 is 15% by mass of the silicone resin emulsion, 6% by mass of the cationic surfactant, and the remaining amount of ion-exchanged water.

The first coating agent of Example 2 contains the same silicone resin emulsion as in Example 1 and octadecyltrimethylammonium chloride (Nissan Cation (registered trademark) AB manufactured by NOF CORPORATION). Octadecyltrimethylammonium chloride is a cationic surfactant having a saturated hydrocarbon group having 18 carbon atoms and is solid at room temperature. The first coating agent of Example 2 is formed in the same manner as in Example 1, and the mixing ratio thereof is 15% by mass of the silicone resin emulsion, 13% by mass of the cationic surfactant, and the remaining amount of ion-exchanged water.

[Comparative Example 1]
Moreover, the coating agent of the comparative example was prepared for comparison. The coating agent of Comparative Example 1 contains the same silicone resin emulsion as in Example 1 and didecyltrimethylammonium chloride (Lipocard (registered trademark) 210-80E manufactured by Lion Specialty Chemicals Co., Ltd.). Didecyltrimethylammonium chloride is a cationic surfactant having a saturated hydrocarbon group having 10 carbon atoms. The coating agent of Comparative Example 1 was formed in the same manner as in Example 1, and the mixing ratio was 15% by mass of the silicone resin emulsion, 3.8% by mass of the cationic surfactant, and the remaining amount of ion-exchanged water.

[Comparative Example 2]
The coating agent of Comparative Example 2 contains the same silicone resin emulsion as in Example 1 and behenyltrimethylammonium chloride (Nissan Cation (registered trademark) VB-F manufactured by NOF CORPORATION). Behenyltrimethylammonium chloride is a cationic surfactant having a saturated hydrocarbon group having 22 carbon atoms. The coating agent of Comparative Example 2 was formed in the same manner as in Example 1, and the mixing ratio was 15% by mass of the silicone resin emulsion, 3.8% by mass of the cationic surfactant, and the remaining amount of ion-exchanged water.

[Comparative Example 3]
The coating agent of Comparative Example 3 is formed by adding ion-exchanged water to the same silicone resin emulsion as in Example 1 and stirring the mixture, and the mixing ratio is 15% by mass of the silicone resin emulsion and the remaining amount of ion-exchanged water.

An experiment was conducted in which the coating agents of each of the above Examples and Comparative Examples were sprayed toward the vehicle to be washed CA by a car wash machine WA. That is, after the vehicle CA to be washed was washed with detergent and city water until it was completely wet, each coating agent was diluted with city water and sprayed from the coat nozzles 40, 41, 42. The injection pressures of the coat nozzles 40, 41 and 42 are applied at high pressure (2 MPa) and low pressure (0.3 MPa).

Table 1 shows the results of visual evaluation of the hydrophilicity on the window glass and the water flow on the painted surface for each experiment.

In Table 1, the hydrophilicity on the window glass is "O" when the whole is hydrophilic, "Δ" when the part is weakly water repellent or water repellent, and "△" when the whole is water repellent. It is indicated by "x". The water flow of the painted surface is "O" when the shape of the water droplet is round and the speed of water droplet flow is fast and there is little water residue, and when the shape of the water droplet is round but the speed of water droplet flow is slow and there is some water residue. “Δ” indicates that the shape of the water droplet is uneven, the speed at which the water droplet flows is slow, and there is a large amount of water remaining, which is indicated by “x”.

According to Table 1, since Comparative Example 3 does not contain a cationic surfactant, it does not easily adhere to the window glass and the painted surface, and the inorganic window glass itself can obtain hydrophilicity, but the water flow of the painted surface cannot be obtained.

Examples 1 and 2 and Comparative Examples 1 and 2 containing a cationic surfactant are considered to be ion-adsorbed to the window glass under low pressure, and water repellency is developed. It is considered that ion adsorption is inhibited under high pressure, and when the number of carbon atoms of the saturated hydrocarbon group of the cationic surfactant is 18 or less (Examples 1, 2 and Comparative Example 1), hydrophilicity is obtained for the window glass. Be done.

On the other hand, in Examples 1 and 2 and Comparative Examples 1 and 2 are considered to be ion-adsorbed on the coated surface under low pressure, but the film is presumed to be non-uniform and water flow is not obtained. It is considered that under high pressure, the organic trimethylsiloxysilicic acid adheres more easily to the coated surface of the organic substance than the glass surface due to the large physical force due to the high pressure. In addition, if a cationic surfactant having adsorptive properties is contained, it becomes easier to adhere. At this time, in Examples 1 and 2 containing a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms, it was presumed that a uniform film was formed under high pressure, and water flow was obtained.

Therefore, the first coating agent containing a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms can satisfactorily obtain hydrophilicity on the window glass and water flow on the coated surface.

According to the present invention, it can be used in a car wash machine that applies a coating agent to a vehicle to be washed.

1 Car wash machine 2 Rails 3 Wheels 4 Top brush 5 Side brush 6 Rocker brush 7 Remote panel 8 Operation panel 9 Shape sensor 11 Shampoo nozzle 12, 13 Water purification nozzle 15 Wax nozzle 20 Blower 21 Top blow nozzle 22 Side blow nozzle 30 Tank storage Part 31 Distribution piping part 40, 41, 42 Coat nozzle (1st coat nozzle)
43, 44 coat nozzle (second coat nozzle)
90 Stand part 91 Ceiling part A Entrance route CA Washed vehicle S1, S2 Washing water S3 First coating agent S4 Second coating agent WA Car wash machine θ Injection angle

Claims (9)

A coating for vehicles comprising trimethylsiloxysilicic acid, a nonionic surfactant that emulsifies the trimethylsiloxysilicic acid, and a cationic surfactant having a saturated hydrocarbon group having 12 to 18 carbon atoms. The first coat nozzle, which injects the agent and moves relative to the vehicle to be cleaned in the front-rear direction,
A car wash machine that moves relative to the vehicle to be washed in the front-rear direction,
A rotating brush that is placed on the main body of the car wash machine to wash the vehicle to be washed,
With a cleaning nozzle that sprays cleaning water onto the vehicle to be cleaned when cleaning with the rotating brush.
Equipped with
The first coat nozzle is provided in the car wash machine main body, and after washing with the rotary brush, the coating agent is applied by the first coat nozzle, and after the first coating step, the first coat nozzle is applied. A second coating step of applying the coating agent is provided, and the moving speed of the car wash machine main body in the first coating step is made slower than the moving speed of the car wash machine main body in the second coating step. Car wash machine . The car wash machine according to claim 1 , wherein the injection pressure of the coating agent injected from the first coat nozzle is 2 MPa or more. The car wash machine according to claim 1 or 2 , wherein the vehicle to be washed is washed with water by the washing nozzle after the coating agent in the first coating step and the second coating step is applied. The car wash machine according to any one of claims 1 to 3, wherein the number of times the coating agent is applied to the front portion of the vehicle to be cleaned by the first coated nozzle is larger than the number of times the coating agent is applied to the rear portion. The claim is characterized in that the first coat nozzle has an upper surface portion for injecting onto the upper surface of the vehicle to be cleaned and a side surface portion for injecting into the side surface, and the injection pressure of the upper surface portion is lower than the injection pressure of the side surface portion. The car wash machine according to any one of items 1 to 4 . The car wash machine according to claim 5 , wherein the injection angle of the upper surface portion is larger than the injection angle of the side surface portion. A blower nozzle for blowing air toward the vehicle to be cleaned is provided, and a step of blowing air from the blower nozzle to dry the vehicle to be cleaned is provided between the cleaning with the rotary brush and the first coating step. The car wash machine according to any one of claims 1 to 6 . The second coat nozzle for ejecting a coating agent having a higher adsorptivity to glass than the coating agent ejected from the first coat nozzle is provided, and the second coat is between the cleaning with the rotary brush and the first coating step. The car wash machine according to any one of claims 1 to 7 , wherein a step of applying a coating agent by a nozzle is provided. The car wash machine according to claim 8 , wherein the coating agent ejected from the second coat nozzle contains an amino-modified polysiloxane and at least one of a nonionic surfactant and a cationic surfactant.

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