JP2020203584A - Mounting structure for bracket - Google Patents

Abstract

To provide a mounting structure for a bracket mounted on a strut of a resin-made fuel tank which is simple and has an erroneous assembly prevention function.SOLUTION: In a mounting structure for a bracket (buffle plate 40) having a cylindrical mounting part 30 which is mounted on a strut 20 of a fuel tank 1 of a vehicle or has a through hole 31 formed on the strut 20 and a connection part 41 which is inserted to the through hole 31 of the mounting part 30 and is fixed to the mounting part 30, on an end of a non-contact surface 33 with the strut 20 of the mounting part 30, a groove part 34 is formed at a position deviated from a symmetric axis 37 in a vehicle vertical direction of the mounting part 30, an engagement projection part 48 engaged with the groove part 34 of the mounting part 30 is formed on the connection part 41 of the bracket (buffle plate 40), and the groove part 34 and the engagement projection part 48 are mounted integrally with each other.SELECTED DRAWING: Figure 5

Description

The present invention relates to a bracket to be attached to a column of a resin fuel tank, and to a mounting structure which is simple and has a function of preventing erroneous assembly.

Iron tanks have long been used as fuel tanks for vehicles such as automobiles, but in recent years, consideration has been given to weight reduction and expansion of vehicle interior space due to the development of multi-layered resin tanks as fuel permeation prevention measures. Resin fuel tanks have come to be used from the viewpoint of improving shape followability.

By the way, in some countries, environmental legislation requires that a self-diagnosis function (On-board diagnostics; OBD) be used to test the leak sealability of a vehicle's fuel system. These tests include the step of placing the tank under negative pressure for some time, so it is necessary to design it to withstand the negative pressure, especially in the case of resin fuel tanks.

Therefore, for example, in Patent Document 1, a method of improving the rigidity of a resin fuel tank while suppressing a decrease in tank capacity by attaching a hollow resin support column to the inside of the resin fuel tank and welding it to a panel. Is disclosed.

On the other hand, a baffle plate for noise reduction is installed in the fuel tank for the purpose of absorbing noise (rocking noise) related to waves that may occur in the tank when the vehicle suddenly accelerates, brakes, turns, etc. It may be installed. For example, Patent Document 2 discloses a method of mounting a resin baffle plate on a resin column (hollow bar) to be attached to the inside of a resin fuel tank.

The technique of Patent Document 2 will be described with reference to FIG. FIG. 7 shows a method of inserting the baffle plate 100 into the slit 400 of the hollow fixing bar 200. The baffle plate 100 is made of high density polyethylene (HDPE) and has a substantially flat plate shape having a plurality of holes 700 for passing fuel.

A cover 300, which is an upper interference portion for suppressing deformation of the tank when a negative pressure is applied to the fuel tank (not shown), is integrally formed on the upper portion of the baffle plate 100. The cover 300 is also made of high density polyethylene (HDPE) like the baffle plate 100. Further, the cover 300 has a leg portion 800 having a claw-shaped mounting portion 500 extending downward substantially in parallel with the baffle plate 100 at a certain interval and projecting in the direction opposite to the baffle plate 100 at the tip portion. It is formed.

The hollow fixing bar 200 has a tubular shape with a square cross section, and the upper part is open. Vertical slits 400 for inserting the baffle plate 100 are formed in a pair of parallel surfaces having a square cross section. Further, a hole 600 that engages with the claw-shaped mounting portion 500 formed on the cover 300 is formed on the pair of parallel surfaces that are different from the pair of parallel surfaces on which the slit 400 having a square cross section is formed. .. The hollow fixing bar 200 is made of polyoxymethylene (POM: polyacetal).

Then, the baffle plate 100 is inserted into the slit 400 of the hollow fixing bar 200, the leg portion 800 of the cover 300 is inserted into the hollow portion of the hollow fixing bar 200, and the mounting portion 500 formed in the leg portion 800 of the cover 300 is hollow. By locking the hole 600 of the fixing bar 200, the baffle plate 100 and the cover 300 which is the upper interference portion can be fixed to the hollow fixing bar 200.

Japanese Patent Publication No. 2014-516327 Special Table 2012-501265

By the way, the shape of the fuel tank varies depending on the size and driving method of the vehicle, the space inside the vehicle, etc., and the size and installation position of the columns also differ accordingly. As a result, not only the case where the baffle plates are provided on both sides of the support column as shown in FIG. 7, but also the case where the baffle plate is formed on one side of the support column. Further, the baffle plates formed on both sides may have different shapes.

Furthermore, the baffle plate has a function as a baffle plate that absorbs noise (swaying noise) related to waves that may occur in the tank when the vehicle suddenly accelerates, brakes, turns, etc., for example, a sender gauge or It may also be used as a place to fix hoses, wiring, etc. In addition, there are cases where it is desired to attach a bracket for fixing the sender gauge, hose, wiring, etc. to the support column instead of as a baffle plate.

Therefore, it is necessary to support brackets including a wide variety of baffle plates, and there is a demand for a mounting structure that makes it easy to use brackets including baffle plates and prevents erroneous assembly, while considering the reduction in the number of parts due to sharing. There is.

In order to solve the above problems, the present invention according to claim 1 is attached to a support of a fuel tank of a vehicle, or is inserted into a tubular mounting portion having a through hole formed in the support and a through hole of the mounting portion. It is a mounting structure of a bracket having a connecting portion fixed to the mounting portion, and a groove portion is provided at an end of a non-contact surface of the mounting portion with a support column at a position deviated from the axis of symmetry in the vehicle vertical direction of the mounting portion. Is formed, and an engaging protrusion that engages with the groove of the mounting portion is formed at the connecting portion of the bracket, and the groove and the engaging protrusion are integrated, which is a bracket mounting structure.

In the present invention of claim 1, a groove is formed at the end of the non-contact surface of the mounting portion with the support column, and an engaging protrusion that engages with the groove of the mounting portion is formed at the connecting portion of the bracket. Since the bracket can be attached by integrating the groove portion and the engaging protrusion, the bracket can be easily attached to the attachment portion attached to the support of the fuel tank of the vehicle. Further, since the bracket can be fixed to one of the columns, it can be handled by combining the brackets, and the number of parts can be reduced.

Further, since the groove portion is formed at a position deviated from the axis of symmetry in the vehicle vertical direction of the mounting portion, the bracket cannot be mounted on the mounting portion in the wrong direction, and erroneous assembly can be prevented.

According to the second aspect of the present invention, the connecting portion has a bifurcated portion, and a key-shaped portion projecting outward from each other is formed at the tip of the bifurcated portion, and the mounting portion is formed in a direction substantially perpendicular to the vehicle vertical direction. The length of A, the length obtained by subtracting the depth of the groove from A is B, the width of the groove in the vehicle vertical direction is D, the width of the through hole in the vehicle vertical direction is F, and the engaging protrusion of the connection portion. The width in the vertical direction of the vehicle is E, the length from the end of the engaging protrusion on the key-shaped side to the base of the key-shaped part is C, the width in the vertical direction of the vehicle outside the bifurcated part is G, and the key shape. This is a bracket mounting structure in which the relationship of E <D, G <F <H, and B <C <A is established when the width of the outside of the portion in the vertical direction of the vehicle is H.

In the present invention of claim 2, since there is an E <D relationship between the width (E) of the engaging protrusion of the connecting portion in the vehicle vertical direction and the width (D) of the groove portion in the vehicle vertical direction, the connecting portion The engaging protrusion can be inserted into the groove of the mounting portion.

At the same time, the width of the through hole in the mounting portion in the vehicle vertical direction is F, the width in the vehicle vertical direction outside the bifurcated portion of the connection portion (G), and the width in the vehicle vertical direction outside the key-shaped portion (H). Since there is a relationship of G <F <H between them, the connecting part can be inserted into the through hole of the mounting part by bending the bifurcated part of the connecting part inward, and the connecting part can be inserted by the key-shaped part. It can be fixed so that it does not come off from the mounting part.

At the same time, the length of the mounting portion in the vertical direction of the vehicle (A), the length obtained by subtracting the depth of the groove from A (B), and the key shape from the end of the engaging protrusion on the key shape side. Since there is a relationship of B <C <A with the length (C) to the base of the portion, the engaging protrusion of the connecting portion is accommodated in the groove portion of the mounting portion, and the bifurcated shape of the connecting portion is formed. When the key-shaped portion formed at the tip of the portion has passed through the mounting portion, the bending of the bifurcated portion is eliminated, and the connecting portion can be fixed by the key-shaped portion so as not to come off from the mounting portion. ..

According to the third aspect of the present invention, assuming that the engaging protrusion of the bracket connecting portion is formed on a plate portion that is not a bifurcated portion and the length of the plate portion from the bracket side is J, (AB). It is a bracket mounting structure having a relationship of <J <B.

In the present invention of claim 3, if the engaging protrusion of the connecting portion of the bracket is formed on a plate portion that is not a bifurcated portion and the length of the plate portion from the bracket side is J, (AB). Since there is a relationship of <J <B, the position of the engaging protrusion of the connecting portion does not shift even when the bifurcated portion bends and advances through the through hole of the mounting portion, and the engaging protruding portion of the connecting portion is It can be securely inserted into the groove of the mounting portion.

In addition, since the plate portion is also inserted into the through hole of the mounting portion, even if a force due to fuel sway that may occur in the tank when the vehicle suddenly accelerates, brakes, turns, etc. acts on the bracket. , The strength of the connecting portion is maintained, and it is possible to prevent damage in the vicinity of the bifurcated portion of the connecting portion.

According to the fourth aspect of the present invention, the bracket is a mounting structure of a bracket which is a baffle plate. According to the fourth aspect of the present invention, since the bracket is a baffle plate, the vehicle is suddenly accelerated to a support column for ensuring the rigidity of the resin fuel tank, or to the attachment portion formed on the support column. It has a function of absorbing noise (rocking noise) related to waves that may occur in the tank when braking, turning, etc. At the same time, it can also be used as a place for fixing a sender gauge, a hose, wiring, or the like.

In a mounting structure in which a bracket connection portion is inserted into a through hole of a tubular mounting portion having a through hole formed in a support column of a fuel tank of a vehicle to fix the bracket, the mounting portion of the mounting portion A groove is formed at the end of the non-contact surface with the support, and an engaging protrusion that engages with the groove of the mounting portion is formed at the connecting portion of the bracket, and the groove and the engaging protrusion are integrated. Therefore, the bracket can be easily attached to the attachment portion attached to the support of the fuel tank of the vehicle. Moreover, since the bracket can be shared, the number of parts can be reduced.

Further, since the groove portion is formed at a position deviated from the axis of symmetry of the mounting portion in the vertical direction of the vehicle and substantially perpendicular to the vehicle vertical direction, the bracket cannot be mounted on the mounting portion in the wrong direction, and erroneous assembly is prevented. be able to.

(A) is a top view showing the arrangement of columns and baffle plates in a resin fuel tank, and (b) is a cross-sectional view taken along the line XX of (a). It is a side view of the support column and the attachment part which are 1st Embodiment of this invention. It is a side view of the baffle plate which has the attachment part of the sender gauge which is 1st Embodiment of this invention. (A) is a YY sectional view in FIG. 2, and (b) is a ZZ sectional view in FIG. It is an assembly drawing which attached the baffle plate to the attachment part of the column which is 1st Embodiment of this invention. It is a figure before assembling when the baffle plate is attached to both sides of the column which is the 2nd Embodiment of this invention. It is a perspective view which showed the method of attaching the conventional baffle plate to a hollow fixing bar (post) (Patent Document 1).

The first embodiment of the present invention will be described with reference to FIGS. 1 to 5. The bracket in the first embodiment is a baffle plate, and a sender gauge is attached to the baffle plate.

(Fuel tank)
As shown in FIGS. 1A and 1B, the resin fuel tank 1 is composed of an upper surface portion 10A and a lower surface portion 10B formed by blow molding, and the upper surface portion 10A and the lower surface portion 10B are side surface portions 10C. Be joined. The fuel tank 1 has a saddle shape straddling the exhaust pipe and the propeller shaft, but the present invention is not limited to the saddle type fuel tank. The fuel tank 1 is made of high density polyethylene (HDPE).

In the fuel tank 1, an opening 11 for attaching a pump module (not shown) is formed in the upper surface portion 10A, and the upper surface portion 10A and the lower surface portion 10B of the fuel tank 1 are connected to increase the strength in the vertical direction of the fuel tank 1. Approximately columnar columns 20A, 20B, 20C, and 20D for securing are arranged. The columns 20A and 20B and the columns 20C and 20D are joined to the upper surface portion 10A and the lower surface portion 10B of the fuel tank 1 and have a function of maintaining the rigidity of the fuel tank 1.

The first baffle plate 13A and the second baffle plate 13B are attached to the support columns 20A and 20C in the fuel tank 1, and the sender gauge 12, which is an electronic member, is arranged on both baffle plates. Further, the support column 20B is provided with a convex portion 15 for temporarily holding the fuel transfer pipe 14, a connector 16A, and a jack 17A and a jack 17B for inserting the connector 16B in the third baffle plate 13C. Nothing is attached to the support column 20D. The first embodiment relates to the second baffle plate 13B.

(Strut)
As shown in FIG. 2, the support column 20 extends in the vertical direction of the vehicle over the upper surface portion 10A of the fuel tank 1 and the lower surface portion 10B facing the upper surface portion 10A. The support column 20 is formed in a substantially cylindrical shape, and has a support column intermediate portion 21, a diameter-expanded portion 22, and a flange portion 23. The diameter-expanded portion 22 is formed so that the diameter increases outward from both ends in the axial direction of the column intermediate portion 21. The strut 20 is made of polyoxymethylene (POM: polyacetal).

(Mounting part)
As shown in FIGS. 2 and 4A, the mounting portion 30 is a rectangular parallelepiped having a through hole 31, and is mounted on the strut intermediate portion 21 of the strut 20 at the contact surface 32 with the strut 20. In the method of mounting the mounting portion 30 to the column intermediate portion 21, the contact surface 32 and the column intermediate portion 21 are joined by heat welding or the like. A connection structure that can be fitted to both the column intermediate portion 21 and the contact surface 32 may be formed to connect the column intermediate portion 21 and the contact surface 32 by fitting. Further, the mounting portion 30 may be formed by molding at the same time when the support column 20 is manufactured. The mounting portion 30 is also made of polyoxymethylene (POM: polyacetal).

A groove 34 is formed at a position of the mounting portion 30 at the end of the non-contact surface 33 facing the contact surface 32, at a position deviating from the axis of symmetry 37 in the vehicle vertical direction. Note that the groove 34 is deviated from the vehicle vertical symmetry axis 37 of the mounting portion 30 means that the vehicle vertical symmetry axis 38 of the groove 34 is deviated from the vehicle vertical symmetry axis 37 of the mounting portion 30. Is. The groove 34 may be formed on the upper surface 35 or the lower surface 36 instead of the non-contact surface 33.

Further, the mounting portion 30 may not be a rectangular parallelepiped but may have a tubular shape having an arc-shaped cross section in the vertical direction. Further, the non-contact surface 33 may be trapezoidal as well as rectangular or square. When the non-contact surface 33 is trapezoidal, it has parallel surfaces perpendicular to the vehicle vertical direction and is formed so as to have different lengths in the left and right vehicle vertical directions. This is to allow the baffle plate 40, which will be described later, to be inserted from either the left or right side so that parts can be shared. The symmetry axis 37 in the vertical direction of the vehicle in the case of a trapezoid refers to a line connecting the middle of different vertical lengths of the left and right vehicles, and may or may not be perpendicular to the vertical direction of the vehicle. ..

As shown in FIG. 2, the mounting portions 30 are mounted at two locations on the columns 20 in the vertical direction of the vehicle. Since the number of mounting portions 30 to be mounted is determined by the force received from the fuel by the baffle plate 40 described later, the number of mounting portions 30 is not limited to two, and may be one or three or more. The same applies to the case of a bracket other than the baffle plate 40. When there are a plurality of mounting portions 30, the distance a between the mounting portions 30 is the same as the distance b between the connecting portions 41 of the baffle plate 40 (FIG. 3).

(Baffle plate)
As shown in FIG. 3, the baffle plate 40 has a connection portion 41 for attaching to the attachment portion 30 attached to the support column 20, and a wave motion that may occur in the tank when the vehicle suddenly accelerates, brakes, turns, or the like. It is composed of a plate main body 42 for noise reduction for the purpose of absorbing noise (oscillation sound) related to (force). The baffle plate 40 is also made of polyoxymethylene (POM: polyacetal).

The plate main body 42 is formed with a sender gauge mounting portion 43 for mounting the sender gauge 12 and a hole 44 for adjusting the wave motion (force) that may occur in the tank.

The connection portion 41 has a plate portion 45, a bifurcated portion 46 divided into upper and lower parts of the vehicle, and a key-shaped portion protruding outward from each other at the tip of the bifurcated portion 46 from the plate body portion 42 side toward the tip. 47 is formed. The tip of the key-shaped portion 47 is rounded so that it can be easily inserted into the through hole 31 of the mounting portion 30. Further, on the plate main body 42 side of the connecting portion 41, an engaging protruding portion 48 that engages with the groove portion 34 of the mounting portion 30 is formed. The size of the engaging protrusion 48 is formed to be slightly smaller than the groove 34 of the mounting portion 30, so that the engaging protrusion 48 can be smoothly inserted into the groove 34 of the mounting portion 30.

FIG. 5 is an assembly view in which the baffle plate 40 of FIG. 3 is attached to the support column 20 in which the attachment portion 30 of FIG. 2 is formed. The attachment of the baffle plate 40 to the support column 20 in which the attachment portion 30 is formed will be described below. By the way, the following relationship is established between the mounting portion 30 and each portion constituting the connecting portion 41 of the baffle plate 40.

The length of the mounting portion 30 in the vertical direction of the vehicle is A, the length obtained by subtracting the depth of the groove 34 from A is B, the width of the groove 34 in the vertical direction of the vehicle is D, and the through hole 31 is in the vertical direction of the vehicle. Is F, the width of the engaging protrusion 48 of the connecting portion 41 in the vehicle vertical direction is E, and the length from the end of the engaging protruding portion 48 on the key-shaped portion 47 side to the base portion 49 of the key-shaped portion 47. Let C be, the width of the outer side of the bifurcated portion 46 in the vertical direction of the vehicle is G, and the width of the outer side of the key-shaped portion 47 in the vertical direction of the vehicle be H, E <D, G <F <H, and B. The relationship <C <A is established.

Since the width H of the vehicle vertical direction outside the key-shaped portion 47 is larger than the width F of the vehicle vertical direction of the through hole 31, when the key-shaped portion 47 is inserted into the through hole 31 of the mounting portion 30 inside, the key shape is formed. The portion 47 is pushed inward, and the bifurcated portion 46 bends inward and is inserted into the through hole 31.

Next, since the width F of the through hole 31 in the vehicle vertical direction is larger than the width G of the vehicle vertical direction outside the bifurcated shape portion 46, the bifurcated shape portion 46 and the plate portion 45 may proceed in the through hole 31. it can.

Then, when the insertion direction of the baffle plate 40 into the mounting portion 30 is correct, the width D of the groove portion 34 in the vehicle vertical direction is larger than the width of the engaging protrusion 48 in the vehicle vertical direction, and therefore the engagement is performed. The protruding portion 48 is inserted into the groove portion 34 of the mounting portion 30.

Finally, the length C from the end on the bifurcated portion 46 side to the base 49 of the key-shaped portion 47 is obtained by subtracting the depth of the groove portion 34 from the length A of the mounting portion 30 in the direction substantially perpendicular to the vehicle vertical direction. Since the length B is larger than the length B, the key-shaped portion 47 passes through the through hole 31, the bending of the bifurcated portion 46 is released, the original shape is restored, and the baffle plate 40 is attached to the mounting portion 30 by the key-shaped portion 47. It is fixed.

Here, if the insertion direction into the baffle plate 40 into the mounting portion 30 is incorrect, the engaging protrusion 48 abuts on the left end portion of the mounting portion 30, so that the connecting portion 41 advances to the through hole 31. Can not be done. At that time, the length from the end on the bifurcated portion 46 side to the base 49 of the key-shaped portion 47 is smaller than the length A of the mounting portion 30 in the vertical direction of the vehicle and substantially perpendicular to the vehicle vertical direction. 47 stays in the through hole 31.

At this time, the key-shaped portion 47 passes through the through hole 31, the bending of the bifurcated portion 46 is released, the original shape is restored, and the baffle plate 40 is fixed to the mounting portion 30 by the key-shaped portion 47. Absent. Therefore, the baffle plate 40 can be pulled out from the mounting portion 30, the direction can be confirmed, and the baffle plate 40 can be reassembled, so that erroneous assembly can be prevented.

At the same time, assuming that the engaging protrusion 48 of the connecting portion 41 of the baffle plate 40 is formed on the plate portion 45 which is not the bifurcated portion 46 and the length of the plate portion 45 from the baffle plate 40 side is J, Since there is a relationship of AB) <J <B, the position of the engaging protrusion 48 does not shift in the vertical direction even when the bifurcated portion 46 bends and advances through the through hole 31 of the mounting portion 30. The engaging protrusion 48 can be reliably inserted into the groove 34 of the mounting portion 30.

Further, since the plate portion 45 is also inserted into the through hole 31 of the mounting portion 30, the force caused by the fluctuation of fuel that may occur in the tank when the vehicle suddenly accelerates, brakes, turns, etc. is exerted on the plate main body portion. Even if it acts on 42, the strength of the connecting portion 41 is maintained, and it is possible to prevent the vicinity of the base of the bifurcated portion 46 from being damaged.

FIG. 6 is a view before assembling when baffle plates are attached to both sides of a support column according to the second embodiment of the present invention. The difference from FIG. 5 in FIG. 6 is that a baffle plate is also attached to the right side of the support column 20. Although the positions of the groove 34 of the mounting portion 30 are also different, the same mounting portion 30 is used and rotated by 180 ° to be mounted on the support column 20. Therefore, it is possible to share parts.

In FIG. 6, the baffle plate 50 attached to the right side of the support column 20 is the same as the third baffle plate 13C in FIG. 1, and has a convex portion 15, a connector 16A, and a connector 16B for temporarily holding the fuel transfer pipe 14. Jack 17A and jack 17B for inserting the above are arranged.

Therefore, when the baffle plate is also attached to the left and right, it can be replaced for each one, so that parts can be shared. Further, since it is not necessary to individually prepare baffle plates integrated on both sides, the number of parts can be reduced.

The practice of the present invention is not limited to the above embodiment, and various modifications can be made as long as the object of the present invention is not deviated.

In the above embodiment, the support column 20, the mounting portion 30, and the baffle plate 40 are all made of polyoxymethylene (POM: polyacetal), but they can also be made of high density polyethylene (HDPE), which is the material of the fuel tank 1. Good.

20 Strut 30 Mounting part 31 Through hole 32 Contact surface 33 Non-contact surface 34 Groove part 37 Symmetric axis 38 Symmetry axis 40 Baffle plate 41 Connection part 42 Plate body part 45 Plate part 46 Bifurcated part 47 Key-shaped part 48 Engagement protrusion

Claims (4)

A tubular mounting part with a through hole that is mounted on or formed in the pillar of the fuel tank of a vehicle,
A bracket mounting structure having a connecting portion that is inserted into the through hole of the mounting portion and fixed to the mounting portion.
A groove is formed at the end of the non-contact surface of the mounting portion with the support column at a position deviated from the axis of symmetry in the vehicle vertical direction of the mounting portion.
An engaging protrusion that engages with the groove of the mounting portion is formed in the connecting portion of the bracket.
A bracket mounting structure characterized in that the groove portion and the engaging protrusion portion are integrated. The connecting portion has a bifurcated portion, and a key-shaped portion that projects outward from each other is formed at the tip of the bifurcated portion, and the length of the mounting portion in the vehicle vertical direction and substantially vertical direction is A. , B is the length obtained by subtracting the depth of the groove from A, the width of the groove in the vehicle vertical direction is D, the width of the through hole in the vehicle vertical direction is F, and the engaging protrusion of the connection portion. The width in the vertical direction of the vehicle is E, the length from the end of the engaging protrusion on the key-shaped portion side to the base of the key-shaped portion is C, and the width in the vertical direction of the vehicle outside the bifurcated portion. G. The bracket according to claim 1, wherein the relationship of E <D, G <F <H, and B <C <A is established when the width of the outside of the key-shaped portion in the vehicle vertical direction is H. Mounting structure. The engaging protrusion of the connecting portion of the bracket is formed on a plate portion that is not the bifurcated portion, and if the length of the plate portion from the bracket side is J, (AB) <J < The bracket mounting structure according to claim 2, which is related to B. The bracket mounting structure according to any one of claims 1 to 3, wherein the bracket is a baffle plate.

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