JP4585347B2 - Baffle plate - Google Patents

Description

  The present invention relates to a baffle plate capable of efficiently installing piping in a fuel tank.

  In a fuel tank of an automobile or the like, a cut valve for preventing fuel leakage at the time of swinging, piping connected to the cut valve, a baffle plate for absorbing the impact of fuel at the time of swinging, and the like are attached.

  Conventionally, these components are attached to the inner wall 2a of the upper tank 2 of the fuel tank 1 as shown in FIG. In FIG. 6, for the sake of convenience, the upper tank 2 is shown downward and the inner surface thereof faces upward. After the above parts are attached to the upper tank 2, the tank is formed by welding to a lower tank (not shown).

  In this case, the baffle plate 3 has a shape in which a plurality of plates are bent and connected at a predetermined angle, and a base portion 3a extending from an end portion of the plate is spot welded to the inner wall 2a and fixed to the upper tank 2. .

  And the piping unit 60 which united the cut valve 61, the check valve 62, and the connector 63 by the piping 64 is comprised. The piping unit 60 is attached via a plurality of brackets 52 to 54 that are fixed to the inner wall 2a in advance. At this time, a part of the pipe 64 is attached to the fuel tank 1 by being held by the bracket 54 via the clip 55.

Patent Document 1 below discloses a fuel tank with a built-in pump in which a baffle plate is disposed inside a tank body, and piping is provided along the plate surface of the baffle plate. In the embodiment, it is described that the pipe is attached to the plate surface of the baffle plate via a clip.
No. 7-52368

  However, in the conventional mounting method shown in FIG. 6 and the above-mentioned Patent Document 1, the piping 64 is mounted via a clip, so that the mounting work is complicated, and the number of parts is increased by the amount of the clip and the cost is increased. There was an inconvenience that increased.

  Accordingly, it is an object of the present invention to provide a baffle plate that can improve the workability of installing pipes installed in a fuel tank and can reduce costs.

  In order to achieve the above object, a first aspect of the present invention is a baffle plate that is disposed in a fuel tank and absorbs noise and shock when the fuel swings, and is fixed in contact with the inner surface of the fuel tank. A base body, and a plate main body standing upright from the base section, the plate main body having a plurality of plate parts bent and connected at a predetermined angle, and fuel is passed through the plate part. A plurality of holes are formed, and the plate portion is composed of a single plate-like portion, and has a base portion that extends from the lower side of the plate portion toward both sides so as to form a T-shaped section, The base is fixed to the inner wall of the tank, and a pair of plate pieces are connected by a thin hinge portion and bent at the thin hinge portion. Cross section from outside to outside A base portion extending in a letter shape, the base portion being fixed to the inner wall of the tank, and a pipe made of a resin tube disposed in the fuel tank in the concave portion of the pair of plate pieces. A baffle plate characterized by being fitted and held is provided.

  According to the above invention, the plate portion constituting the plate body of the baffle plate is provided with a pair of plate pieces provided with bowl-shaped recesses, and the recesses of the pair of plate pieces are piped into the fuel tank. Since the pipe made of the resin tube is configured to be fitted and held, there is no need for a clip or a bracket for holding the clip, which was necessary when arranging the conventional pipe, Costs can be reduced by reducing the number of parts, and installation workability is also improved. Further, since the baffle plate and the piping are integrated, the piping structure is simplified and the impact resistance of the baffle plate when the fuel collides can be increased.

  Furthermore, since the pipe is sandwiched between the pair of plate pieces, the pipe can be stably held. Moreover, since the plate body is formed by overlapping a pair of plate pieces, the rigidity of the plate body can be increased.

  According to a second aspect of the present invention, there is provided the baffle plate according to the first aspect, wherein the hole of the plate portion formed by bending the pair of plate pieces is provided avoiding the concave portion.

  According to the baffle plate of the present invention, since the holding means of the pipe having a structure sandwiched between a pair of plate pieces is provided in the plate body of the baffle plate, the clip, bracket, etc., which are conventionally necessary, are unnecessary, and the parts The cost can be reduced by reducing the number of points, and the mounting workability is also improved.

Hereinafter, an embodiment of a baffle plate of the present invention will be described with reference to the drawings.
1 and 2 show an embodiment of the baffle plate of the present invention.

  As shown in FIG. 1, the baffle plate 10 includes a base portion 40 that is in contact with the inner surface of the upper tank of the fuel tank 1, and a plate body 20 that is erected from the base portion 40. In the case of this embodiment, the plate body 20 is composed of three plate portions 21, 22, and 23 that are bent and connected at a predetermined angle.

  Among these, the plate parts 21 and 22 are comprised by one plate-shaped part. On the other hand, the plate part 23 is configured by connecting a pair of plate pieces 23 a and 23 b by a thin hinge part 24 and bending the thin plate part 23 via the thin hinge part 24.

  A plurality of holes 39 through which fuel passes are formed in the plate portions 21 and 23 located at both ends. In this embodiment, the hole 39 has a circular shape, but a rectangular hole, a lattice shape, a slit shape, or the like may be employed.

  An arc-shaped notch 36 is formed at the lower corner of the plate portion 21 located at one end. The notch 36 is provided for passing a pipe 64 described later. The base portion 40 in the plate portion 21 has a shape extending so as to form a T-shaped cross section from the lower side of the plate portion 21 toward both sides.

  On the other hand, the base portion 40 of the plate portion 23 located at the other end portion has a shape extending in an L-shaped cross section from the lower side portions of the pair of plate pieces 23a and 23b toward the outside. On the inner surfaces of the pair of plate pieces 23a and 23b, bowl-shaped concave portions 25 and 25 are provided in alignment with each other. In the case of this embodiment, the concave portion 25 is formed substantially in the middle of the plate portion 23 in the height direction and substantially parallel to the base portion 40, and the cross section thereof is semicircular.

  Accordingly, the pipe 64 is inserted between the pair of plate pieces 23a and 23b, fitted into the respective recesses 25, and the pair of plate pieces 23a and 23b is closed, so that the pipe 64 is connected to both the plate pieces 23a and 23b. It is sandwiched between and held. By forming the concave portion 25 to have a semicircular cross section, the pipe 64 can be firmly held by being in close contact with the outer periphery of the pipe 64. In addition, a protrusion extending along the axial direction or a protrusion along the circumferential direction may be provided on the inner surface of the recess 25 to increase the surface pressure against the pipe 64 and strengthen the fixing force of the pipe 64.

  The entire baffle plate 10 is integrally formed of a resin material. As the resin material, in consideration of heat resistance in the baking coating process, resins having high heat resistance, for example, polyamide resins such as 6,6-nylon and aromatic nylon, polybutylene terephthalate (PBT), etc. Preferably employed. These resin materials may be reinforced with glass fibers or the like.

  The baffle plate 10 is attached to the inner wall 2 a of the fuel tank 1 through a metal bracket 50. In the case of this embodiment, the bracket 50 is composed of a pair of attachment pieces 51, 51. Each mounting piece 51 has a holding part 51a extending so as to contact the upper surface along the base part 40, and a flange part 51b which is bent in an L shape from one side in the longitudinal direction of the holding part 51a and spreads outward. It consists of.

  In this embodiment, the baffle plate 10 is made of a resin material, but may be made of metal, and in this case, the baffle plate 10 is directly attached to the fuel tank 1 by spot welding or the like. .

  Next, a method for attaching the baffle plate 10 and the piping unit will be described. In the case of this embodiment, as shown in FIG. 2, a pair of cut valves 61, 61, a check valve 62, and a connector 63 are connected to each other by three pipes 64 to form a pipe unit 60. ing. The cut valve 61 prevents the fuel oscillated due to the inclination of the vehicle from leaking from the fuel tank 1, and the check valve 62 adjusts the internal pressure of the fuel tank 1 to prevent the fuel tank 1 from being crushed. 63 is connected to the external pipe 4. The cut valve 61 and the like are made of a synthetic resin such as 6,6-nylon, and the pipe 64 is a resin tube made of a synthetic resin such as 6,6-nylon, a metal pipe, or the like.

  The piping unit 60 is attached to the inner wall 2a of the fuel tank 1 via brackets 52 and 53 that are fixed in advance by spot welding or the like. The bracket 52 engages and holds the cut valve 61, and the bracket 53 engages and holds the check valve 62.

  The baffle plate 10 is attached to the surface of the inner wall 2a of the fuel tank 1 via the metal bracket 50 as described above. That is, a pair of mounting pieces 51, 51 of the bracket 50 are used to press the base 40 that spreads on both sides of the lower side of the plate body 20, and the flange portions 51b of the mounting pieces 51, 51 are brought into contact with the inner wall 2a by spot welding or the like. By fixing, the baffle plate 10 can be fixed to the inner wall 2 a of the fuel tank 1. At this time, in the plate portion 23, a part of the pipe 64 is inserted between the pair of plate pieces 23a and 23b, fitted into the recesses 25 of the plate pieces 23a and 23b, and the plate pieces 23a and 23b are closed. As a result, the pipe 64 is held.

  As described above, a part of the pipe 64 is disposed along the plate portion 23 by fixing the base portions 40, 40 of the plate pieces 23a, 23b with the mounting pieces 51, 51 of the bracket 50. be able to.

  Thus, by providing the holding means for the pipe 64 integrally with the plate main body 20 of the baffle plate 10, the clip 55 that has been necessary when arranging the pipe 64 and the bracket 54 for holding the clip 55 are provided. This eliminates the need to reduce the number of parts and reduce costs, and also improves installation workability.

  Further, since the baffle plate 10 and the pipe 64 are integrated, the pipe structure can be simplified, and there is no possibility that the pipe 64 interferes with the end face of the baffle plate 10 and damages the pipe 64. Can increase the impact resistance of the baffle plate 10 when the fuel collides.

  Further, since the baffle plate 10 is made of resin in this embodiment, it easily absorbs the impact force when the fuel collides. Further, since the pipe 64 is sandwiched between the pair of plate pieces 23a, 23b, the pipe 64 can be stably held, and deformation such as the pipe 64 being bent or drooping can be suppressed. Become. Furthermore, since the plate part 23 is formed by overlapping a pair of plate pieces 23a and 23b, the rigidity can be increased.

  FIG. 3 shows a reference example of a baffle plate for understanding the present invention. It should be noted that substantially the same parts as those of the above-described embodiment are denoted by the same reference numerals and description thereof is omitted.

  The baffle plate 10a of this reference example is different from the above embodiment in that a pressing piece 26 is provided as means for holding the pipe 64.

  According to this reference example, since the pipe 64 is held by the holding piece 26 provided on the plate body 20, the pipe 64 is connected to the plate body 20 after the baffle plate 10 a is disposed in the fuel tank 1. Can be fixed. Moreover, since the piping 64 can be hold | maintained by one touch only by closing the pressing piece 26 after arrange | positioning the piping 64 in the recessed part 25, attachment workability | operativity improves.

  The engagement claw 27 includes a shaft portion 27a and a pair of elastically deformable engagement pieces 27b and 27b extending in a hook shape from the distal end of the shaft portion 27a in the proximal direction of the engagement claw 27. ing. The engaging claw 27 and the engaging hole 38 constitute the engaging portion 37 in the present invention. Two presser pieces 26 are provided along the longitudinal direction of the concave portion 25, and the engaging portion 37 described above is provided in each presser piece 26.

  The concave portion 25, the presser piece 26, and the engaging portion 37 constitute a holding means in the present invention.

  The baffle plate 10 a is a means for pressing the base 40 with a pair of mounting pieces 51, 51 of the bracket 50 and spot welding the flange portions 51 b, 51 b of the mounting pieces 51, 51 to the inner wall 2 a of the fuel tank 1. Is fixed to the inner wall 2a. And after arrange | positioning a part of piping 64 to the recessed part 25, the holding piece 26 is bent as shown by the imaginary line in FIG. 27 can be engaged with the engagement hole 38 to hold the pipe 64.

  According to this embodiment, since the pipe 64 is held by the holding piece 26 provided on the plate body 20, the pipe 64 is attached to the plate body 20 after the baffle plate 10 a is disposed in the fuel tank 1. Can be fixed. Moreover, since the piping 64 can be hold | maintained by one touch only by closing the pressing piece 26 after arrange | positioning the piping 64 in the recessed part 25, attachment workability | operativity improves.

  4 and 5 show other reference examples of the baffle plate for understanding the present invention. It should be noted that substantially the same parts as those in the embodiment and the reference example are denoted by the same reference numerals, and the description thereof will be omitted.

  The baffle plate 10b of this reference example is different from the embodiment and the one reference example in that the pipe itself is integrally formed with the plate body 20.

  That is, the pipe body 28 is formed in the plate main body 20 at a portion near the base portion 40 in the height direction and substantially parallel to the base portion 40. The piping portion 28 has a communication passage 28a therein, and fuel, fuel vapor, and the like can flow through the communication passage 28a.

  A connecting pipe portion 29 protrudes in the axial direction from one end of the piping portion 28. On the outer periphery of the connecting pipe portion 29, a plurality of annular protrusions 29a having tapered portions that gradually decrease in diameter toward the distal end direction are formed at predetermined intervals in the axial direction. As shown in FIG. 5, a pipe 64 is press-fitted and connected to the connecting pipe portion 29.

  From the other end of the piping part 28, the cylindrical part 30 protrudes in the axial direction. A stepped portion 30a is formed on the inner surface of the cylindrical portion 30 in the axial direction, and a seal ring 31 is arranged on the stepped portion 30a. Then, a connecting pipe portion 62a (shown by an imaginary line in FIG. 4) such as a check valve 62 is inserted into the cylindrical portion 30 so as to be fixed by means of welding, adhesion, etc., and from outside such as a clamp and a band. By providing an engaging structure between the connecting means or the connecting pipe part 62a and the cylindrical part 30, the connecting pipe part 62a such as the check valve 62 can be directly connected.

  As shown in FIG. 5, the baffle plate 10 b can fix the base 40 to the inner wall 2 a of the fuel tank 1 via a pair of attachment pieces 51, 51 of a metal bracket 50. As described above, the connecting pipe portion 62a of the check valve 62 constituting the piping unit 60 is inserted and connected to the cylindrical portion 30 at one end of the piping portion 28 and connected to the connecting pipe portion 29 at the other end of the piping portion 28. By connecting the other end of the pipe 64 connected to the connector 63, the pipe section 28 provided on the plate body 20 can be used as a pipe path. Thus, by providing a part of the piping path integrally with the plate body 20, the piping structure can be simplified and piping work can be facilitated.

  The present invention can be used as a baffle plate capable of efficiently mounting piping in a fuel tank.

It is a perspective view which shows one Embodiment of the baffle plate of this invention. It is a perspective view which shows the state which attached the same baffle plate in the fuel tank. It is a perspective view which shows one reference example of a baffle plate for understanding this invention. It is a perspective view which shows the other reference example of a baffle plate for understanding this invention. It is a perspective view which shows the state which attached the same baffle plate in the fuel tank. It is a perspective view which shows the state which attached the attachment components in the conventional fuel tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Fuel tank 2a Inner wall 10, 10a, 10b Baffle plate 20 Plate main body 21, 22, 23 Plate part 23a, 23b Plate piece 24 Thin-walled hinge part 25 Recessed part 26 Holding piece 27 Engagement claw 28 Piping part 29 Connection pipe part 30 Cylindrical part 37 Engagement part 38 Engagement hole 40 Base part 50 Bracket

Claims (2)

A baffle plate that is arranged in the fuel tank and absorbs noise and shock when the fuel swings,
A base that is fixed in contact with the inner surface of the fuel tank, and a plate body that is erected from the base;
The plate body has a plurality of plate portions that are bent and connected at a predetermined angle;
The plate portion has a plurality of holes through which fuel passes,
The plate portion is composed of a single plate-like portion, and has a base portion extending from the lower side of the plate portion toward both sides so as to form a T-shaped cross section, and the base portion is fixed to the inner wall of the tank. And a pair of plate pieces are connected by a thin-walled hinge portion, bent at the thin-walled hinge portion, and bowl-shaped concave portions are provided in alignment with each other on the inner surface, and further, an L-shaped cross section from the lower side portion toward the outside A base portion extending to the base, and the base portion fixed to the inner wall of the tank,
A baffle plate, wherein a pipe made of a resin tube disposed in a fuel tank is fitted and held in the recesses of the pair of plate pieces.   The baffle plate according to claim 1, wherein the hole of the plate portion formed by bending the pair of plate pieces is provided so as to avoid the concave portion.

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