JP2014180889A - Vehicle fuel tank - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce manufacturing cost and reduce a weight by improving adhesion efficiency of coating material on a tank main body, and reduce industrial waste disposal cost by reducing the coating material which becomes industrial waste so as to contribute to environmental preservation.SOLUTION: A rust-proof coating layer 2 is formed on an entire surface of a tank main body 1 by thin film electrodeposition coating such as spray coating by a spray gun or cation coating of an aqueous coating composition. Then, a chipping-resistant protector plate 3 formed of a plate material is arranged so as to face to a road surface facing part 1b-2 facing to a road surface when the tank main body 1 is installed on a vehicle body 4. The chipping-resistant protector plate 3 is formed in an approximately dish-like plate material by casting or pressing synthetic resin, metal or the like, and is, for example, arranged on a tank half body 1b for structuring the tank main body by using an adhesive or fastening tool.

Description

  The present invention relates to a vehicle fuel tank having a rust prevention function and a chipping resistance function in a vehicle such as an automobile.

  This type of fuel tank is usually installed on the underside of the vehicle body such as a floor panel of a vehicle in an automobile or the like. In order to protect against chipping generated by the above, it is necessary to provide a chipping resistance function.

  Therefore, conventionally, this type of fuel tank is provided with a rust-preventing coating layer on the vehicle body-side facing portion of the tank body so as to perform a rust-proofing function, and also on the road-side facing portion facing the road surface. It is configured by applying a pitting-resistant coating film so as to perform a chipping resistance function together with a rust function.

  Such conventional anti-corrosion coating layer and anti-chipping coating layer are formed by applying the aqueous coating composition onto the surface of the tank body by using a spray gun.

  The anti-corrosion coating layer is formed with a relatively low clay by making the water-based coating composition highly diluted to achieve anti-corrosion performance. In order to prevent damage to the tank body from rock splashes during traveling of the vehicle, the layer is made relatively thick by making the clay relatively high by making the water-based paint composition low in dilution. (See Patent Document 1 and Patent Document 2).

JP-A-6-286383 JP 2007-301528 A

  However, in a conventional vehicle fuel tank, the coating film is formed on the tank body by spraying paint with a spray gun as described above.

  Therefore, in the conventional fuel tank, it is dragged by trying to secure the necessary film thickness for reliably exhibiting both the formation performance of the anticorrosion coating layer and the formation performance of the anti-chipping coating layer. There was a tendency that an excessive film thickness exceeding the required performance was formed.

  Thus, when forming a chipping-resistant coating film, the spray coating method using a spray gun results in the formation of a thicker film than necessary. This increases the cost of the fuel tank, which in turn increases the cost of the fuel tank, and increases the weight of the fuel tank, which may increase the weight of the vehicle and reduce the fuel efficiency. was there.

  Moreover, in the conventional fuel tank, since both the formation of the anticorrosive coating layer and the formation of the chipping-resistant coating layer are performed by spraying a spray gun, the adhesion efficiency of the paint to the fuel tank is improved. Unfortunately, paint that has not been applied to the fuel tank and has not contributed to the formation of both coatings scattered around the environment becomes industrial waste, which not only increases disposal costs, but can also adversely affect environmental conservation. It will also be a thing.

  In view of such unsolved problems in the prior art, the present invention achieves a reduction in manufacturing cost by improving the adhesion efficiency of the coating material to the tank body, and reduces the amount of coating material that becomes industrial waste. An object of the present invention is to provide a fuel tank for a vehicle that reduces processing costs and thus contributes to environmental conservation.

  The vehicle fuel tank according to the present invention has a rust preventive coating layer formed on the entire surface of the tank body, and faces a road surface facing portion facing the road surface in a state where the tank body is installed on the vehicle body. And a chipping protector plate made of a plate material.

  With this configuration, instead of the conventional chipping-resistant coating film layer, this invention installs a chipping protector plate made of a plate material so as to be opposed to the road surface facing portion, so as to perform a chipping resistance function. As in the past, it is possible to prevent the formation of an excessive coating thickness exceeding the required performance, and to reduce industrial costs along with reduction of manufacturing costs and weight reduction of vehicles, to reduce industrial waste processing costs, As a result, it can contribute to environmental conservation.

  In addition, according to the present invention, the specification specification can be optimized by separating the rust prevention function by the rust prevention coating layer and the chipping protection function by the chipping protector plate in terms of constitution.

  Moreover, this invention is comprised by forming the antirust coating film layer formed in the said tank main body whole surface by thin film electrodeposition coating as one embodiment.

  With this configuration, the present invention makes the coating efficiency on the tank body 100% by forming a rust preventive coating layer by spray coating of a water-based coating composition or thin film electrodeposition coating such as cationic coating. Therefore, the manufacturing cost can be further reduced, the industrial waste processing cost can be reduced by further reducing the industrial waste, and the environment can be protected.

  Moreover, this invention is comprised by adhering and installing the said chipping-resistant protector board to the said tank main body with an adhesive agent as one embodiment.

  With this configuration, the present invention is designed to install a chipping protector plate on the tank body by bonding with an adhesive, so that compared to the conventional method of forming a chipping coating film layer by spray gun spraying, the design man-hours and installation Expected to further reduce manufacturing costs by reducing man-hours.

  As an embodiment of the present invention, the chipping protector plate is attached to a bracket portion provided on a tank band for attaching to the vehicle body in a state of surrounding the tank body.

  With this configuration, the present invention enables the chipping protector plate to be installed using a tank band for attaching the tank body to the vehicle body, and a new bracket portion is provided on the tank band for the installation of the chipping protector plate. In addition, the use of fastening parts such as bolts / nuts can be expected to reduce the manufacturing cost compared to the conventional anti-chipping coating layer formed by spray gun spraying.

  As an embodiment of the present invention, the chipping protector plate is attached to a tank flange in the tank body.

  With this configuration, the present invention is capable of reducing the number of parts by using the tank flange and forming a chipping-resistant coating film layer by spray gun spraying by attaching the chipping protector plate to the tank flange. Reduction of manufacturing cost can be expected.

  Further, as an embodiment of the present invention, the chipping protector plate is configured to be opposed to a part of the road surface facing portion.

  With this configuration, the present invention provides a countermeasure against chipping by installing a separate structure insulator, such as a propeller shaft or an exhaust pipe, in the center portion of the tank body in the front-rear direction of the road surface, etc. Therefore, the chipping protector plate can be reduced in size by disposing the chipping protector plate only on the road surface facing portion that avoids such a region.

  In this invention, instead of the conventional chipping-resistant coating layer, a chipping protector plate made of a plate material is installed so as to be opposed to the road surface facing portion, so that the chipping-resistant function is applied. It is possible to prevent the formation of an excessive coating film exceeding the required performance, reduce manufacturing costs and industrial waste, reduce industrial waste processing costs, and contribute to environmental conservation. it can.

  In addition, according to the present invention, the specification specification can be optimized by separating the rust prevention function by the rust prevention coating layer and the chipping protection function by the chipping protector plate in terms of constitution.

1 is an exploded perspective view depicting a vehicle fuel tank according to a first embodiment of the present invention. It is AA sectional drawing of FIG. It is the front view which drawn the state which attached the vehicle fuel tank which concerns on 2nd Example of this invention to the vehicle body. It is BB sectional drawing of FIG. It is the front view which drawn the state which attached the vehicle fuel tank which concerns on 3rd Example of this invention to the vehicle body. It is CC sectional drawing of FIG.

  The fuel tank for a vehicle according to the embodiment of the present invention achieves a reduction in manufacturing cost by improving the adhesion efficiency of the paint to the tank body, and reduces the cost of industrial waste by reducing the paint that becomes industrial waste. It is configured to contribute to environmental conservation.

  Next, a vehicle fuel tank according to an embodiment employing the present invention will be described with reference to the drawings.

  First, the first embodiment according to the present invention shown in FIGS. 1 and 2 will be described. A tank body 1 includes one tank half (for example, an upper tank) 1a and another tank half (for example, an upper tank) for storing fuel. For example, the lower tank 1b is configured by joining the tank flanges 1a-1 and 1b-1 to each other. One tank half 1a is provided with a fuel filler port to which a fuel fuel pipe (not shown) is connected.

  The other tank half 1b in the tank body 1 is configured to have a road surface facing portion 1b-2 whose surface is normally a lower surface when the tank body 1 is attached to a vehicle body (not shown) of the vehicle. ing.

  The road surface facing portion 1b-2 has a substantially central portion formed in a recess 1b-2a so that vehicle components (not shown) such as a propeller shaft and an exhaust pipe can be disposed. The recess 1b-2a Is separated into separation road surface facing portions 1b-2b and 1b-2c.

  Moreover, the tank main body 1 comprised as mentioned above is coat | covered with the antirust coating layer 2 on the whole surface, as clearly shown in FIG. The anticorrosive coating layer 2 is formed by thin film electrodeposition coating such as spray coating or cationic coating of a low viscosity aqueous coating composition diluted at a relatively high dilution with a spray gun.

  Further, in the recess 1b-2a, although not shown, in order to take measures against heat generated from the vehicle component parts, an insulator having a separate structure is stretched and installed to substantially take measures against chipping. Therefore, the chipping protector plate 3 is installed on the separation road surface facing portions 1b-2b and 1b-2c, which are road surface facing portions avoiding such areas, so as to be opposed thereto.

  Each of the chipping protector plates 3 is formed by forming a synthetic resin, metal, or the like into a substantially dish-shaped plate material by molding or press molding, and the separation road surface facing portions 1b-2b, 1b-2c Each is installed by bonding with an adhesive (see the state shown in FIG. 2).

  According to the first embodiment of the present invention configured as described above, instead of the conventional chipping-resistant coating film layer, both separated road surface facing portions 1b-2b, 1b- which are part of the road surface facing portion 1b-2. Since the chipping protector plate 3 made of a plate material is provided so as to be held relative to 2c and the chipping resistant function is applied, the chipping resistant coating layer is formed more than required when forming a chipping resistant coating layer as in the past. It is possible to prevent the formation of excessive film thickness, reduce manufacturing costs, reduce vehicle weight, reduce industrial waste, and contribute to environmental conservation. it can.

  Moreover, the 1st Example can aim at specification specification optimization by having separated the antirust function by the antirust coating layer 2, and the anti-chipping function by the anti-chipping protector board 3 on the structure.

  Furthermore, in the first embodiment, when the anticorrosive coating layer 2 is formed by thin film electrodeposition coating such as cationic coating, the coating efficiency for forming the anticorrosive coating layer 2 on the tank body 1 is as follows. Therefore, the manufacturing cost can be further reduced, the industrial waste can be further reduced, and the industrial waste processing cost due to the reduction of the industrial waste can be reduced, thereby protecting the environment.

  Furthermore, in the first embodiment, a propeller shaft or an exhaust pipe or the like passes through the recess 1b-2a in the center part of the vehicle body in the longitudinal direction of the vehicle body among the road surface facing part 1b-2 of the tank body 1. Chipping protectors are provided only on the road surface facing portions (separated road surface facing portions 1b-2b, 1b-2c) that avoid such areas because a body-structured insulator (not shown) is installed and countermeasures against chipping are taken. By arranging the plates 3 to face each other, the chipping protector plate 3 can be reduced in size.

  Next, the second embodiment according to the present invention shown in FIGS. 3 and 4 will be described. The tank body 1 is composed of one tank half 1a and the other tank as in the first embodiment. The half body 1b is configured by joining the tank flanges 1a-1, 1b-1 to each other, and the other tank half body 1b is attached to the vehicle body 4 constituting the vehicle. , The surface is usually the lower surface and constitutes the road surface facing portion 1b-2.

  In the second embodiment, unlike the first embodiment, the road surface facing portion 1b-2 is a recess for arranging vehicle components (not shown) such as a propeller shaft and an exhaust pipe. 1b-2a is not formed, and the whole has a substantially flat surface.

  Moreover, the tank main body 1 comprised as mentioned above is rust-proofed by the rust-proof coating layer 2 on the whole surface like the said 1st Example, as clearly shown in FIG. . The anticorrosive coating layer 2 is also formed by applying a thin film electrodeposition coating such as spray coating or cationic coating with a spray gun of a low viscosity aqueous coating composition diluted at a relatively high dilution. .

  Further, a chipping protector plate 3 is installed on the road surface facing portion 1b-2, which has a substantially flat surface as a whole in the tank body 1, so as to be opposed to the entire surface.

  The chipping protector plate 3 is formed by forming synthetic resin or metal on a substantially dish-like plate material by molding or press molding, and is provided on a tank band 5 for attaching the tank body 1 to the vehicle body 4. The bracket body 5a is attached to the tank body 1 by fastening bolts / nuts 6 as fasteners.

  According to the second embodiment according to the present invention configured as described above, similarly to the first embodiment, instead of the conventional chipping-resistant coating film layer, it is held relative to the road surface facing portion 1b-2. In this way, an anti-chipping protector plate 3 made of a plate material is installed so as to perform the anti-chipping function, so that an excessive film thickness exceeding the required performance is formed when the anti-chipping coating layer is formed as in the past. It is possible to prevent such a situation, and to reduce manufacturing costs and weight of the vehicle as well as to reduce industrial waste, thereby reducing industrial waste processing costs, thereby contributing to environmental conservation.

  Also, in the second embodiment, the spec specification can be optimized by separating the anti-rust function by the anti-rust coating layer 2 and the anti-chipping function by the anti-chipping protector plate 3 in terms of configuration.

  Further, in the second embodiment, when the anticorrosive coating layer 2 is formed by thin film electrodeposition coating such as cationic coating, the coating efficiency for forming the anticorrosive coating layer 2 on the tank body 1 is improved. It is possible to reduce the manufacturing cost, and further reduce the industrial waste, further reduce the industrial waste treatment cost due to the reduction of industrial waste, and thereby protect the environment. it can.

  In addition, the chipping protector plate 3 in the second embodiment is installed on the tank band 5 using a bracket portion 5a provided on the tank band 5 for attaching the tank body 1 to the vehicle body 4. As a result of the installation of a bracket part 5a to the tank band 5 and the use of fastening parts such as bolts / nuts, manufacturing costs are expected to be reduced compared to the conventional method of forming a chipping-resistant coating layer by spray gun spraying. it can.

  In the second embodiment, similarly to the first embodiment, when vehicle components such as a propeller shaft and an exhaust pipe are disposed in the lower portion of the tank body 1, the road surface facing portion 1b-2 is provided. In this case, the recess 1b-2a is formed. In this case, the road facing portion 1b-2 is centered on the recess 1b-2a, and both sides thereof are separated road facing portions 1b-. 2b and 1b-2c are separated.

  As a result, a separate insulator (not shown) is installed in the recess 1b-2a, and the chipping protector plate is provided with the recess 1b-2a because a countermeasure against chipping is substantially taken. The road surface facing part 1b-2 (separated road surface facing parts 1b-2b, 1b-2c) is avoided.

  Next, the third embodiment according to the present invention shown in FIGS. 5 and 6 will be described. Like the above-described embodiments, the tank body 1 includes one tank half 1a and the other tank half. The body 1b is constituted by joining the tank flanges 1a-1 and 1b-1 to each other, and the other tank half 1b is in a state where the tank body 1 is attached to the vehicle body 4 constituting the vehicle. The surface is usually the lower surface and constitutes the road surface facing portion 1b-2.

  In the second embodiment, unlike the first embodiment, the road surface facing portion 1b-2 is a recess for arranging vehicle components (not shown) such as a propeller shaft and an exhaust pipe. 1b-2a is not formed, and the whole has a substantially flat surface.

  Moreover, the tank main body 1 comprised as mentioned above is rust-proofing by the rust-proof coating layer 2 on the whole surface like the said 1st and 2nd Example, as clearly shown in FIG. Has been. The anticorrosive coating layer 2 is also formed by applying a thin film electrodeposition coating such as spray coating or cationic coating with a spray gun of a low viscosity aqueous coating composition diluted at a relatively high dilution. .

  Further, a chipping protector plate 3 is installed on the road surface facing portion 1b-2, which has a substantially flat surface as a whole in the tank body 1, so as to be opposed to the entire surface.

  The chipping protector plate 3 is formed by forming synthetic resin, metal, or the like into a substantially dish-shaped plate material by molding or press molding, and the chipping protector plate together with the tank flanges 1a-1 and 1b-1. 3 is fastened to the tank body 1 by fastening bolts / nuts 7 as fastening tools.

  According to the third embodiment of the present invention configured as described above, in the same manner as in the above-described embodiment, instead of the conventional chipping-resistant coating film layer, the plate material is held relative to the road surface facing portion 1b-2. The chipping protector plate 3 made of the above is installed to provide a chipping resistance function, so that an excessive film thickness exceeding the required performance is formed when a chipping resistant coating film layer is formed as in the prior art. This can be prevented, and the industrial waste can be reduced by reducing the manufacturing cost and the weight of the vehicle and the industrial waste, thereby contributing to environmental conservation.

  Also, in the third embodiment, the spec specification can be optimized by separating the anti-rust function by the anti-corrosion coating layer 2 and the anti-chipping function by the anti-chipping protector plate 3 from a structural point of view.

  Further, in the third embodiment, when the anticorrosive coating layer 2 is formed by thin film electrodeposition coating such as cationic coating, the coating efficiency for forming the anticorrosive coating layer 2 on the tank body 1 is improved. It is possible to reduce the manufacturing cost, and further reduce the industrial waste, further reduce the industrial waste, and reduce the industrial waste cost. Can do.

  In addition, since the chipping protector plate 3 in the third embodiment is installed on the tank flange 1b-1 of the other tank half 1b, a new position of the mounting hole to the tank flange 1b-1 is provided. Thus, compared with the conventional method of forming a chipping-resistant coating layer by spray gun spraying, a reduction in manufacturing cost can be expected.

  In the third embodiment, similarly to the first and second embodiments, when vehicle components such as a propeller shaft and an exhaust pipe are arranged at the lower part of the tank body 1, the road surface facing portion is provided. The recess 1b-2a is formed in 1b-2. In such a case, the road surface facing portion 1b-2 is centered on the recess 1b-2a and both sides thereof are opposed to the separated road surface. The parts are separated into parts 1b-2b and 1b-2c.

  As a result, a separate insulator (not shown) is installed in the recess 1b-2a, and the chipping protector plate is provided with the recess 1b-2a because a countermeasure against chipping is substantially taken. The road surface facing part 1b-2 (separated road surface facing parts 1b-2b, 1b-2c) is avoided.

  The present invention described above achieves a reduction in manufacturing cost by improving the adhesion efficiency of the paint to the tank body and reduces the industrial waste processing cost by reducing the paint used as industrial waste. Since it was intended to contribute to environmental conservation, it can be said that it is suitable for a fuel tank for vehicles having a rust prevention function and a chipping resistance function in a vehicle such as an automobile.

1 Tank body 1a One half
1a-1 Tank flange 1b The other half
1b-1 Tank flange
1b-2 Road surface facing part
1b-2a recess
1b-2b Separation road surface facing part (part of road surface facing part)
1b-2c Separation road surface facing part (part of the road surface facing part)
1b-3 Bracket part 2 Rust-proof coating layer 3 Chipping protector plate 4 Car body 5 Tank band
5a Bracket part

Claims (6)

  After forming a rust preventive coating layer on the entire surface of the tank main body, a chipping protector plate made of a plate material is provided so as to face the road surface facing portion facing the road surface in a state where the tank main body is installed on the vehicle body. A fuel tank characterized by being installed.   2. The vehicle fuel tank according to claim 1, wherein the anticorrosive coating layer formed on the entire surface of the tank body is formed by thin film electrodeposition coating.   The vehicular fuel tank according to claim 1, wherein the chipping protector plate is bonded to the tank body with an adhesive.   The vehicle fuel tank according to claim 1 or 2, wherein the chipping protector plate is attached to a bracket portion provided on a tank band for attaching to the vehicle body in a state of surrounding the tank body. .   The vehicle fuel tank according to claim 1 or 2, wherein the chipping protector plate is attached to a tank flange of the tank body.   The vehicular fuel tank according to any one of claims 1 to 6, wherein the chipping protector is disposed opposite to a part of the road surface facing portion. .

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