JP3906945B2 - Pipe support structure for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pipe support structure for a vehicle for supporting a pipe such as a breather pipe connected to a fuel tank for a vehicle, for example.
[0002]
[Prior art]
Conventionally, as a structure for supporting a breather pipe connected to a vehicle fuel tank, one disclosed in Japanese Utility Model Laid-Open No. 54-176828 is known. This is because a pipe insertion hole is provided in the inner wall near the fuel tank of the floor side member located at the upper side of the fuel tank, and a notch is provided in the upper part of the outer side wall facing this, A pipe outlet hole is provided in the wheel house inner panel located on the side, and a breather pipe attached to the fuel tank is inserted and supported through the pipe insertion hole, the notch portion, and the pipe extraction hole.
[0003]
[Problems to be solved by the invention]
However, in the above-described conventional example, the breather pipe is simply inserted through the pipe insertion hole, the notch portion, and the pipe extraction hole, and is not fixed at all. Therefore, the breather pipe may be damaged due to the manufacturing error or assembly error of the car body, etc., and the breather pipe may be damaged, or the proper mounting posture of the breather pipe cannot be maintained. there were.
[0004]
The present invention has been made in view of the above-described problems of the prior art described above, and an object of the present invention is for a vehicle that can easily and reliably attach and support a pipe such as a breather pipe . It is intended to provide a pipe support structure.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, a pipe support structure for a vehicle according to claim 1 comprises a pipe support frame having an inner wall and an outer wall that are spaced apart from each other, and the inner wall is made of a flexible material. An inner support member comprising a pipe penetrating portion through which a pipe to be supported removably penetrates is provided at the center of the bottom of the flange-shaped recess of the inner support member main body having a flange-shaped recess; provided an outer support member which is immovable fixed in the thrust direction the pipe detachably comprises the pipe from the outer wall is inserted over the inner wall, the pipe has a flat portion and a bulged portion The outer support member has a recess, and the flat portion is inserted into the recess from the open portion to stop the rotation of the pipe and bring the end surface of the bulging portion into contact with the outer support member. Characterized in that the immovable securing the pipe in the thrust direction by the.
[0006]
In particular , since the pipe is inserted and attached from the outer wall to the inner wall, the pipe can be easily attached and supported from the outer wall even if there is no work space on the inner wall.
[0007]
Further, since the inner support member is flexible, even if the pipe insertion hole of the inner support member and the pipe insertion hole of the outer support member are deviated, the deviation is absorbed by the flexible characteristic of the inner support member, and the pipe The pipe is not deformed by an excessive load, and there is no backlash between the pipe and the inner support member, and the mounting posture of this portion is stably supported in an appropriate state.
[0008]
Further, the pipe is inserted into the concave portion of the outer support member from the open portion thereof so that the pipe is prevented from rotating and the end surface of the bulging portion of the pipe is brought into contact with the outer support member. Is fixed so as not to move in the thrust direction, and the opening of the recess is sealed by the sealing member, so that the pipe is reliably and stably supported in a predetermined posture.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0010]
(First embodiment)
First, a first embodiment of the present invention will be described with reference to FIGS. In this embodiment, a breather pipe connected to a fuel tank for a vehicle is supported.
[0011]
FIG. 1 is a schematic side view with a part cut away showing the configuration of a pipe support structure according to a first embodiment of the present invention, and FIG. 2 is an enlarged vertical sectional view of a main part showing a state before the pipe support structure is assembled. FIG. 3 is an enlarged vertical sectional view of the main part showing the assembled state of the pipe support structure, and FIG. 4 is a perspective view of the main part showing the state before the pipe support structure is assembled.
[0012]
In FIG. 1, 1 is a floor of a vehicle body, 2 is a fuel tank fixed to the lower surface of the floor 1 by appropriate fixing means, 3 is an inlet pipe (fuel pipe) for fueling connected to the fuel tank 2, and 4 is A breather pipe (vent pipe) for venting air during refueling connected to the fuel tank 2 and the inlet pipe 3, the air in the fuel tank 2 is discharged from the breather pipe 4 during refueling. Oil supply into the tank 2 can be performed smoothly. 5 is a vent pipe connected to the fuel tank 2, which is one of the US emission regulations, Paflos (one requirement in the Evaporation Emission Regulations, which makes the pressure in the fuel tank 2 less than specified in the specified test mode) ).
[0013]
The breather pipe 4 and the vent pipe 5 are supported on the lower surface of the floor 1 by the pipe support structure of the present invention.
[0014]
The pipe support structure of the present invention includes a pipe support frame 6 that is positioned on one side of the fuel tank 2 and fixed to the lower surface of the floor 1. As shown in FIG. 2, the pipe support frame 6 has a U-shape in which an inner wall 7 and an outer wall 8 that are spaced apart from each other are connected by a lower wall 9. Mounting flanges 10 and 11 are formed at the upper end of the inner wall 7 and the upper end of the outer wall 8. The pipe support frame 6 is attached to the lower surface of the floor 1 by fixing these mounting flanges 10 and 11 to the lower surface of the floor 1 by appropriate fixing means. When the pipe support frame 6 is attached, the inner wall 7 is positioned closer to the fuel tank 2 and the outer wall 8 is positioned on the opposite side.
[0015]
The inner wall 7 is provided with pipe through holes 12 and 13 through which the breather pipe 4 and the vent pipe 5 pass, and engagement holes 14 into which clips for attaching an inner support member to be described later are fitted and locked. Further, the outer wall 8 is provided with pipe through holes 15 and 16 through which the breather pipe 4 and the vent pipe 5 pass, and an engagement hole 17 into which a clip for attaching an outer support member described later is fitted and locked. Yes. The diameters of the pipe through holes 12, 13, 15, 16 are set to be slightly larger than the diameters of the breather pipe 4 and the vent pipe 5.
[0016]
The inner wall 7 is provided with an inner support member (stay) 18 that supports the breather pipe 4 and the vent pipe 5 so as to be freely inserted and removed. The inner support member 18 is formed by integrally forming pipe penetration portions 20 and 21 through which a breather pipe 4 and a vent pipe 5 respectively penetrate an inner support member main body 19 made of a synthetic resin with a flexible material such as rubber. Yes. As shown in FIG. 3, the pipe penetrating portions 20 and 21 are bowl-shaped recesses formed in a bowl shape that is concave to the left with the right side of FIG. 3 being the bottom side. And the breather pipe 4 and the vent pipe 5 penetrate through the portion corresponding to the center of the bottom of these bowl-shaped recesses so as to be freely inserted and removed. Thereby, even if the pipe through holes 12 and 13 in the inner wall 7 and the pipe through holes 15 and 16 in the outer wall 8 are deviated, the deviation is absorbed by the flexible characteristics of the pipe through portions 20 and 21, and the breather pipe 4 and the vent pipe 5 are not deformed by an unreasonable load, and there is no backlash between the breather pipe 4 and the vent pipe 5 and the inner support member 18. The mounting posture is stably supported in an appropriate state.
[0017]
On one side surface (the left side surface in FIG. 2) of the inner support member main body 19, a plurality of (three in this embodiment) clip 22 for engaging and locking are integrally formed. Then, from the outer surface side (the right side in FIG. 2) of the inner wall 7, the clip 22 of the inner support member 18 is forcibly fitted and locked to the engagement hole 14 using its elasticity. The inner support member 18 is fixed to the inner wall 7. Thereby, since the inner support member 18 can be easily and reliably attached to the inner wall 7, workability is good.
[0018]
Further, an outer support member 23 (stays) to which the breather pipe 4 and the vent pipe 5 are fixed is detachably attached to the outer wall 8 via a plurality of (three in this embodiment) clips 24. Thereby, since the outer support member 23 can be easily and reliably attached to the outer wall 8, workability is good.
[0019]
The outer support member 23 has an outer support member body 25 made of synthetic resin, and the outer support member body 25 is provided with pipe insertion holes 26 and 27 through which the breather pipe 4 and the vent pipe 5 are inserted with a margin. ing. Projecting wall portions 28 and 29 are integrally formed on one side surface (the left side surface in FIG. 2) of the outer support member main body 25. The protruding walls 28 and 29 are provided with recesses 30 and 31 penetrating in the axial direction in which the breather pipe 4 and the vent pipe 5 are fitted, respectively. The upper surface open portions 32 and 33 of these recesses 30 and 31 are set to a value smaller than the diameter of the recesses 30 and 31. The recesses 30 and 31 communicate with the insertion holes 26 and 27, respectively. The breather pipe 4 and the vent pipe 5 are inserted into the recesses 30 and 31 from the upper surface opening portions 32 and 33 through the insertion holes 26 and 27. In this inserted state, the breather pipe 4 and the vent pipe 5 are in close contact with the recesses 30 and 31.
[0020]
After inserting one end side of the breather pipe 4 and the vent pipe 5 into the concave portions 30 and 31 through the upper surface opening portions 32 and 33, a sealing member that forms a plate shape made of synthetic resin on the upper surfaces of the both projecting wall portions 28 and 29. By fixing the (cap) 34 by ultrasonic welding or the like, the upper surface open portions 32 and 33 can be sealed by the sealing member 34. Thereby, the breather pipe 4 and the vent pipe 5 can be securely fixed to the outer support member 23.
[0021]
A flat portion 35 and a bulging portion 36 are formed on both sides of a portion to be inserted into the concave portion 30 of the breather pipe 4 bent at one end side. The breather pipe 4 is prevented from rotating by inserting the flat portion 35 into the recess 30. Further, the end face of the bulging portion 36 abuts against the outer support member main body 25 and the protruding wall portion 28, so that the breather pipe 4 is fixed so as not to move in the thrust direction. Thereby, the support state of the breather pipe 4 bent at one end side is stabilized, and the breather pipe 4 can be stably held in a predetermined posture state for a long period of time.
[0022]
Further, a flat portion 35a and a bulging portion 36a are formed on both side portions of the portion inserted into the concave portion 31 of the vent pipe 5. The vent pipe 5 is prevented from rotating by inserting the flat portion 35a into the recess 31. Further, the vent pipe 5 is fixed so as not to move in the thrust direction by the end surface of the bulging portion 36a coming into contact with the outer support member main body 25 and the protruding wall portion 29. Thereby, the support state of the vent pipe 5 is stabilized, and the vent pipe can be stably held in a predetermined posture state for a long period of time.
[0023]
The breather pipe 4 and the vent pipe 5 are both made of a material that is not easily rusted (stainless steel in the present embodiment), and even if the breather pipe 4 and the vent pipe 5 are damaged during installation, the holes caused by rusting. No opening occurs. In addition, rubber tubes 37 and 38 are connected to both end portions of the vent pipe 5, and annular projecting portions 39 and 40 are formed on the outer peripheral surfaces of the connection portions, respectively. The annular protrusions 39 and 40 ensure the rubber tubes 37 and 38 from being detached and sealed.
[0024]
Next, a procedure for supporting the breather pipe 4 and the vent pipe 5 as shown in FIGS. 1 and 3 from the disassembled state shown in FIGS. 2 and 4 will be described.
[0025]
The inner support member 18 is fixed to the inner wall 7 by fitting the clip 22 of the inner support member 18 into the engagement hole 14 of the inner wall 7.
[0026]
Further, the breather pipe 4 and the vent pipe 5 are inserted into the insertion holes 26 and 27 of the outer support member 23, and one end side of the breather pipe 4 and the vent pipe 5 is inserted into the recesses 30 and 31 from the upper surface opening portions 32 and 33. The end surface of the bulging portion 36 of the breather pipe 4 is brought into contact with the outer support member main body 25 and the protruding wall portion 28, and the end surface of the bulging portion 36 a of the vent pipe is connected to the outer supporting member main body 25 and the protruding wall portion 29. Abut. Thereafter, the upper surface open portions 32 and 33 are sealed by fixing the sealing member 34 to the upper surfaces of the protruding wall portions 28 and 29. As a result, the breather pipe 4 and the vent pipe 5 are fixed to the outer support member main body 25.
[0027]
After such a state, the breather pipe 4 and the vent pipe 5 are sequentially inserted into the through holes 15 and 16 of the outer wall 8 and the through holes 12 and 13 of the inner wall 7 from the other end side, and the breather pipe 4 and the vent pipe are inserted. The other end of 5 is inserted into the pipe penetration parts 20 and 21 of the inner support member 18. Next, the outer support member 23 is fixed to the outer wall 8 by fitting the clip 24 of the outer support member 23 into the engagement hole 17 of the outer wall 8.
[0028]
As described above, the breather pipe 4 and the vent pipe 5 are stably and reliably supported by the pipe support frame 6 as shown in FIGS.
[0029]
As described above in detail, according to the pipe support structure according to the present embodiment, the pipe through holes 12, 13, and the inner wall 7 of the pipe support frame 6 and the outer wall 8, which are parts having a very small manufacturing error. Since the breather pipe 4 and the vent pipe 5 are inserted and supported at 15 and 16, interference between the breather pipe 4 and the vent pipe 5 and the pipe support frame 6 can be prevented.
[0030]
One end side of the breather pipe 4 and the vent pipe 5 is fixed to the outer support member 23 provided on the outer wall 8 of the pipe support frame 6, and the breather is attached to the inner support member 18 provided on the inner wall 7 of the pipe support frame 6. Since the other end side of the pipe 4 and the vent pipe 5 is supported so as to be freely inserted and removed, the breather pipe 4 and the vent pipe 5 are supported at two locations of the inner support member 18 and the outer support member 23. On the other hand, the breather pipe 4 and the vent pipe 5 are stably and stably supported in an appropriate posture.
[0031]
Moreover, since the breather pipe 4 and the vent pipe 5 are inserted and attached to the inner wall 7 from the outer wall 8, the breather pipe 4 and the vent pipe 5 can be easily installed from the outer wall 8 side even if there is no work space on the inner wall 7 side. Can be attached and supported.
[0032]
Moreover, since the pipe penetration parts 20 and 21 of the inner side supporting member 18 are flexible, even if the pipe penetration holes 12 and 13 of the inner side wall 7 and the pipe penetration holes 15 and 16 of the outer side wall 8 have shifted | deviated, a pipe penetration part The above-described misalignment is absorbed by the flexible characteristics 20 and 21, and the breather pipe 4 and the vent pipe 5 are not deformed due to an unreasonable load acting on the breather pipe 4 and the vent pipe 5. The backlash between the pipe 5 and the inner support member 18 is eliminated, and the mounting posture of this portion is stably supported in an appropriate state.
[0033]
Further, by inserting the flat portion 35 of the breather pipe 4 into the concave portion 30 of the outer support member 23 from the upper surface opening portion 32, the breather pipe 4 whose one end is bent is prevented from rotating and the breather pipe 4 is expanded. Since the end surface of the projecting portion 36 abuts against the outer support member main body 25 and the protruding wall portion 28, the breather pipe 4 bent at one end side is fixed so as not to move in the thrust direction, so that one end side is bent. The breather pipe 4 can be reliably prevented from rotating and displaced in the thrust direction.
[0034]
Further, when the flat portion 35a of the vent pipe 5 is inserted into the concave portion 31 of the outer support member 23 from the upper surface opening portion 33, the vent pipe 5 is prevented from rotating and the end surface of the bulging portion 36a of the vent pipe 5 is outside. Since the vent pipe 5 is fixed so as not to move in the thrust direction by contacting the support member main body 25 and the protruding wall portion 29, the vent pipe 5 is reliably prevented from rotating and displaced in the thrust direction. Yes.
[0035]
Further, after the breather pipe 4 and the vent pipe 5 are inserted into the recesses 30 and 31, the upper surface open portions 32 and 33 are sealed by the sealing member 34, so that the breather pipe 4 and the vent pipe 5 are connected to the upper surface open portions 32 and 33. The breather pipe 4 and the vent pipe 5 are securely fixed in the recesses 30 and 31 without slipping out of 33.
[0036]
Further, since the inner support member 18 and the outer support member 23 are attached to the pipe support frame 6 by the clips 22 and 24, the assemblability is good and the inner support member 18 and the outer support member 23 of the pipe support frame 6 are good. Since the engagement holes 14 and 17 which are the attachment holes can be made small, the strength is hardly lowered.
[0037]
Further, since the breather pipe 4 and the vent pipe 5 are made of a material which is not easily rusted such as stainless steel, even if the breather pipe 4 and the vent pipe 5 are damaged when attached, holes are formed in the breather pipe 4 and the vent pipe 5 due to rust. There's no such thing.
[0038]
(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment described above, the outer support member 23 is attached to the outer wall 8 by the plurality of clips 24. However, the present invention is not limited to this, and as shown in FIG. A frame-like fitting member 41 is integrally formed on the side surface, a fitting hole 42 into which the fitting member 41 is fitted is provided in the outer wall 8, and the fitting member 41 is fitted into the fitting hole 42. The outer support member 23 may be detachably attached to the outer wall 8.
[0039]
With such a configuration, the attaching operation of the outer support member 23 to the outer wall 8 can be easily and reliably performed with one touch.
[0040]
In FIG. 5, the same parts as those in the first embodiment described above are denoted by the same reference numerals.
[0041]
In addition, you may make it attach the outer side supporting member 23 to the outer side wall 8 with a screw so that attachment or detachment is possible.
[0042]
As the support pipe is not limited to the breather pipe 4 and vent pipes 5, the pipe support structure of the present invention can be widely applied to other pipes.
[0043]
【The invention's effect】
As described above in detail , according to the present invention, the axial positioning of the pipe with respect to the pipe support frame is achieved by inserting the flat portion of the pipe into the concave portion of the outer support member from the open portion to prevent the pipe from rotating. In addition, since the pipe is fixed so that it cannot move in the thrust direction by bringing the end surface of the bulging portion of the pipe into contact with the outer support member, the accuracy of the protruding amount of the pipe in front of the pipe support frame is It is determined only by the accuracy of the total length of the pipe. Therefore, there is a specific effect that the axial positioning of the pipe can be easily and reliably performed . Therefore, the pipe can be attached and supported easily and reliably.
[0044]
Also, before Symbol inner support member is a flexible, yet, by the gap exists between the inner peripheral surface and the outer peripheral surface of the pipe to be supported in the bowl-shaped recess of the inner support member body, good more flexible characteristics Therefore, even if the center of the pipe through hole of the inner support member and the center of the pipe through hole of the outer support member are misaligned, the misalignment is absorbed by the good flexible characteristics of the inner support member, which is impossible for the pipe. The pipe is not deformed by the applied load, and there is no backlash between the pipe and the inner support member, so that the mounting posture of this portion is stably supported in an appropriate state.
[Brief description of the drawings]
FIG. 1 is a schematic side view with a part cut away showing a configuration of a pipe support structure according to a first embodiment of the present invention.
FIG. 2 is an enlarged vertical sectional view showing a main part of the pipe support structure before assembling.
FIG. 3 is an enlarged vertical cross-sectional view of a main part showing an assembled state of the pipe support structure.
FIG. 4 is a main part perspective view showing a state before the pipe support structure is assembled.
FIG. 5 is a side view with a part cut away showing a main configuration of a pipe support structure according to a second embodiment of the present invention.
[Explanation of symbols]
1 Floor 2 Fuel tank 3 Inlet pipe (fuel pipe)
4 Breather pipe (vent pipe)
5 Vent pipe 6 Pipe support frame 7 Inner wall 8 Outer wall 9 Lower wall 10 Mounting flange 11 Mounting flange 12 Pipe through hole 13 Pipe through hole 14 Engaging hole 15 Pipe through hole 16 Pipe through hole 17 Engaging hole 18 Inner support Member 19 Inner support member main body 20 Pipe penetration part 21 Pipe penetration part 22 Clip 23 Outer support member 24 Clip 25 Outer support member main body 26 Insertion hole 27 Insertion hole 28 Projection wall part 29 Projection wall part 30 Concave part 31 Concave part 32 Upper surface opening part 33 open-top portion 34 sealing member 35 flat portion 36 bulging portion 37 rubber tube 38 rubber tube 39 annular protrusion 40 annular protrusion 41 fitting member 42 fitting hole

Claims (1)

A pipe support frame having an inner wall and an outer wall facing each other, the inner wall being made of a flexible material and having a bowl-shaped recess at the center of the bottom of the bowl-shaped recess; An inner support member provided with a pipe penetrating portion through which a pipe to be supported is detachably inserted is provided, and an outer support member fixed to the outer wall so that the pipe cannot be moved in a thrust direction is detachably provided. made by inserting the pipe to extend from the outer wall to the inner wall, the pipe has a flat portion and a bulged portion, said outer support member includes a recess, the opening said flat portion in said recess characterized in that immovable securing the pipe in the thrust direction by abutting the end surface of and Shi stop rotating the pipe the bulging portion to the outer support member by inserting the parts Pipe support structure for a vehicle to be.

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