JP6139927B2 - Fuel system device for vehicle - Google Patents

Description

  The present invention relates to a fuel system device in a vehicle including a protector for covering a fuel system auxiliary machine such as a fuel filter attached to a vehicle body side from the outside.

  Conventionally, there is a fuel system apparatus in the vehicle described in Patent Document 1 below. According to this publication, the fuel system device includes a fuel filter, which is a fuel system auxiliary machine mounted on the vehicle body side, and two fuel pipes that project from the outer surface of the fuel filter and each distribute fuel. Each of the fuel pipes includes two fuel tubes whose one ends are fitted along the axial direction of the fuel pipes, and a protector that covers the fuel filter from the outside.

  Then, fuel is supplied to the fuel filter from a fuel tank mounted on the vehicle and filtered through one of the two sets of the fuel pipe and the fuel tube. Further, the fuel filtered by this fuel filter is supplied to the vehicle driving engine of the vehicle through the other set. Then, by supplying the fuel whose quality is improved by the filtration, stable combustion is ensured in the engine, and a desired travel is obtained in the vehicle.

  On the other hand, the protector protects the fuel filter from being damaged by preventing any external force from being applied to the fuel filter in the event of a vehicle collision.

JP-A-9-195875

  By the way, in the above prior art, the protector serves to protect only the fuel filter, and the fuel tube and the fuel tube having one end fitted to the fuel tube are located away from the protector. doing.

  For this reason, there is a risk that some external force may be applied to one end of the fuel pipe or fuel tube in the event of a vehicle collision. In this case, if one end of the fuel tube is detached from the fuel pipe, Leakage occurs, which is not preferable.

  Here, conventionally, a fuel filter, a fuel pipe, and one end of a fuel tube arranged in the fuel tank have been proposed. According to this configuration, application of any external force to the fuel filter or the like is prevented by the fuel tank. However, in the case of this configuration, there is an inconvenience that the fuel tank becomes in the way and it becomes difficult to perform maintenance and inspection work on the fuel filter.

  In view of this, it is conceivable to provide another protector for covering the fuel pipe and one end of the fuel tube fitted to the fuel pipe separately from the protector outside the fuel tank. However, when other protectors are separately provided in this way, the number of parts of the fuel system device in the vehicle increases, and the configuration becomes complicated and the mass increases. There is a risk that the productivity of the apparatus is lowered and the production cost is increased.

  The present invention has been made by paying attention to the above-described circumstances, and an object of the present invention is to provide a fuel pipe projecting from a fuel-system auxiliary machine and a fuel tube having one end fitted on the fuel pipe. Even if some external force is applied to a fuel system device in a vehicle having a vehicle collision, etc., fuel leakage due to separation of one end of the fuel tube from the fuel tube is prevented, and this Even in such a case, the production cost of the fuel system device in the vehicle can be reduced.

The invention of claim 1 includes a fuel system auxiliary machine 22 attached to the vehicle body 2, fuel pipes 34, 35 projecting from the outer surface of the fuel system auxiliary machine 22 for circulating the fuel 18, and the fuel pipe 34, Fuel in a vehicle provided with fuel tubes 36 and 37 whose one ends are fitted outside along the axial direction of the fuel pipes 34 and 35 and a protector 41 which covers the fuel system auxiliary machine 22 from the outside. In the system equipment,
One end portions of the fuel tubes 36 and 37 are bent substantially at right angles in the vicinity of the outer fitting portions to the fuel tubes 34 and 35,
A portion 41a, 41b of the protector 41 is disposed axially outward of the fuel pipes 34, 35 so as to restrict the detachment of one end of the fuel tubes 36, 37 from the fuel pipes 34, 35 ;
A part of the protector 41 from the outer surface of the fuel tubes 36 and 37 in the axial direction of the fuel tubes 34 and 35 rather than the dimension A in which one end of the fuel tubes 36 and 37 can be detached from the fuel tubes 34 and 35. The fuel system device for a vehicle is characterized in that the dimension B up to 41a and 41b is made smaller .

  In addition, in this section, the reference numerals and drawing numbers appended to the above terms are not intended to limit the technical scope of the present invention to the “Example” section and the contents of the drawings described later.

  The effects of the present invention are as follows.

The invention according to claim 1 is a fuel system auxiliary machine attached to the vehicle body side, a fuel pipe projecting from the outer surface of the fuel system auxiliary machine, and a fuel pipe through which fuel flows, and an axial direction of the fuel pipe relative to the fuel pipe In a fuel system apparatus for a vehicle, comprising: a fuel tube with one end portion fitted along, and a protector that covers the fuel system auxiliary machine from the outside;
One end of the fuel tube is bent at a substantially right angle in the vicinity of the outer fitting portion to the fuel tube,
A portion of the protector is disposed axially outward of the fuel pipe so as to restrict detachment of one end of the fuel tube from the fuel pipe ,
The dimension from the outer surface of the fuel tube to a part of the protector is smaller in the axial direction of the fuel tube than the dimension in which one end of the fuel tube can be detached from the fuel tube. Yes.

  For this reason, even when one end of the fuel tube fitted on the fuel pipe is detached from the fuel pipe due to some external force at the time of a vehicle collision or the like, the separation is restricted by a part of the protector. Therefore, it is more reliably prevented that one end portion of the fuel tube is detached from the fuel tube due to the external force and the fuel leakage occurs.

  In particular, if one end of the fuel tube is detached from the fuel pipe by the external force when the fuel in the fuel system auxiliary machine is pressurized, the fuel leaks out to be ejected by the pressure. This is highly undesirable. However, since the detachment of the one end portion of the fuel tube from the fuel tube is regulated by the protector as described above, the fuel leakage as described above is surely prevented, which is extremely beneficial.

  The prevention of the fuel leakage described above is achieved by using a part of the protector for protecting the fuel system auxiliary machine from some external force. Therefore, the fuel leakage prevention can be achieved with a simple structure while suppressing an increase in mass for this use, so that the productivity of the fuel system in the vehicle is maintained well, and the production cost is reduced. can do.

FIG. 5 is an enlarged view taken along line II in FIG. 4. It is a simplified top view of a vehicle. It is a simplified side view of a vehicle. FIG. 4 is a partial enlarged cross-sectional view taken along line IV-IV in FIG. 2. FIG. 5 is a view taken along line VV in FIG. 4.

  The present invention relates to a fuel system apparatus for a vehicle according to the present invention, in which a vehicle collision occurs with respect to a fuel system apparatus in a vehicle including a fuel pipe projecting from a fuel system auxiliary machine and a fuel tube having one end portion fitted to the fuel pipe. Even if some external force is applied, the fuel tube is prevented from leaking due to separation of one end of the fuel tube from the fuel tube, and even in this case, the production of the fuel system device in the vehicle In order to realize the object of enabling the cost to be reduced, a form for carrying out the present invention is as follows.

  That is, a fuel system device in a vehicle includes a fuel system auxiliary machine attached to the vehicle body side, a fuel pipe projecting from the outer surface of the fuel system auxiliary machine, a fuel pipe through which fuel flows, and a shaft of the fuel pipe with respect to the fuel pipe. A fuel tube having one end fitted along the direction and a protector that covers the fuel system auxiliary device from the outside are provided. A portion of the protector is disposed axially outward of the fuel tube so as to restrict the separation of one end of the fuel tube from the fuel tube.

  In order to explain the present invention in more detail, an embodiment thereof will be described with reference to the accompanying drawings.

  In the figure, reference numeral 1 is a vehicle exemplified by an automobile, and an arrow Fr indicates the front in the traveling direction of the vehicle 1.

  The vehicle 1 includes a vehicle body frame 3 that forms a lower portion of the vehicle body 2, a pair of left and right front and rear wheels 5 and 6 that are suspended from the vehicle body frame 3 and support the vehicle body 2 on a running surface 4, and the vehicle body A vehicle body floor panel 8 installed on the upper surface of the frame 3 and forming the lower surface of the vehicle compartment 7 inside the vehicle body 2 and a seat 9 installed in the vehicle compartment 7 on the vehicle body floor panel 8 are provided.

  In addition, the vehicle 1 includes an engine 13 for driving the vehicle 1 that is supported by the front portion of the vehicle body frame 3 at the front portion of the vehicle body 2, and extends from the engine 13 toward the rear end portion of the vehicle body 2. 3 and an exhaust pipe 14 disposed on the lower side of one side (left side). The exhaust pipe 14 has a muffler 15 in the middle in the longitudinal direction thereof.

  The vehicle 1 also includes a fuel system device 17 for driving the engine 13. The fuel system 17 is disposed near the side of the muffler 15 below the other side (right side) of the vehicle body frame 3, and has a fuel tank 19 that stores fuel 18 supplied to the engine 13. A bracket 20 that supports the fuel tank 19 on the vehicle body frame 3 side, and a fuel that is attached to the fuel tank 19 and pressurizes the fuel 18 in the fuel tank 19 so that the fuel 18 can be discharged to the outside of the fuel tank 19. A pump 21 and a fuel filter 23 that is a fuel system auxiliary machine 22 that filters the pressurized fuel 18 discharged from the fuel pump 21 and supplies the filtered fuel 18 to the engine 13 are provided.

  Specifically, the fuel filter 23 is disposed in a space 26 between the muffler 15 and the fuel tank 19 and is disposed in the vicinity of the fuel tank 19. The fuel filter 23 has a cylindrical shape having an axis 27 extending in the front-rear direction of the vehicle body 2. A bracket 29 is projected by a fastener 28 so as to project from the fuel tank 19 into the space 26. A band 30 for removably fixing the fuel filter 23 to the protruding end side of the bracket 29 is supported by welding. The band 30 extends around the axis 27 of the fuel filter 23, and the fuel filter 23 is detachably fixed to the inner peripheral surface thereof by a fastener 31. Thereby, the fuel filter 23 is attached to the vehicle body 2 side via the fuel tank 19.

  Before the fuel filter 23, the rear fuel pipes 34 and 35 are projected from the outer surface of the rear end portion before the fuel 18 is circulated. The front and rear fuel pipes 34 and 35 are positioned on the axis 27 of the fuel filter 23, respectively. The front and rear fuel tubes 34 and 35 are provided with rear fuel tubes 36 and 37 before one end of each of the front and rear fuel tubes 34 and 35 is fitted and fixed along the axial direction.

  The other end of the front fuel tube 36 is connected to the engine 13, and the other end of the rear fuel tube 37 is connected to the discharge port of the fuel pump 21. Further, a return fuel tube 38 is provided for communicating the middle portion of the front fuel tube 36 to the fuel tank 19. A quick joint that can be attached and detached in a one-touch manner is used for external fitting and fixing of one end of each of the fuel tubes 36 and 37 to the fuel tubes 34 and 35.

  When the fuel pump 21 is driven, the fuel 18 in the fuel tank 19 is pressurized, supplied to the fuel filter 23 through the rear fuel tube 37 and the rear fuel tube 35, and filtered. Further, the fuel 18 filtered by the fuel filter 23 is supplied to the engine 13 through the front fuel tube 34 and the front fuel tube 36 and is combusted. When the fuel 18 passing through the front fuel tube 36 has an excessively high pressure, a part of the fuel 18 is returned to the fuel tank 19 through the return fuel tube 38, and the fuel 18 is maintained at a predetermined pressure.

  The muffler of the exhaust pipe 14 is connected to the fuel filter 23 which is the fuel system auxiliary equipment 22, the front and rear fuel pipes 34 and 35, the one end portions of the front and rear fuel tubes 36 and 37, and the protruding end side of the bracket 29. A sheet metal protector 41 that integrally covers from the outside on the 15 side is provided. The protector 41 is detachably fixed by a fastener 43 to a bracket 42 protruding from the protruding end side of the bracket 29. The protector 41 extends in the vertical direction and extends in the front-rear direction of the vehicle body 2 along the axis 27 of the fuel filter 23, and the fuel from the front and rear ends of the protector main body 41a. Before and after the fuel pipes 34 and 35 are arranged in the vicinity of the axially outward direction of the fuel pipes 34 and 35, the rear protector bent portions 41b and 41b are provided.

  The protector 41 prevents any external force from being applied to one end of the fuel filter 23, the fuel pipes 34, 35, and the fuel tubes 36, 37 in the event of a collision of the vehicle 1, and breaks them. Protect from The protector 41 functions as a heat insulator for preventing the radiant heat H generated by the exhaust gas passing through the muffler 15 of the exhaust pipe 14 from reaching the fuel filter 23 and the like. It works to prevent it from colliding.

  Further, the front and rear protector bent portions 41b of the protector 41 serve to restrict the detachment of one end portions of the fuel tubes 36 and 37 from the fuel tubes 34 and 35, respectively. Specifically, the fuel tubes 36, 35 in the axial direction of the fuel tubes 34, 35 are larger than the dimension A in which one ends of the fuel tubes 36, 37 can be detached from the fuel tubes 34, 35. The dimension B from the outer surface of 37 to the front and rear protector bent portions 41b, 41b of the protector 41 is supposed to be smaller (A> B).

  When the fuel filter 23 is replaced with a new one or when maintenance or inspection work is performed on the fuel filter 23, first, the protector 41 is removed from the bracket 42 by loosening the fastener 43, and the protector 41 is removed. The fuel filter 23 is separated. Next, the fuel filters 23 may be taken out by loosening the fasteners 28, 31 or detaching the fuel tubes 36, 37 from the fuel tubes 34, 35.

  According to the above configuration, the protector 41 connects the end portion of each fuel tube 36, 37 externally fitted to the fuel filter 23, each fuel pipe 34, 35, and each fuel pipe 34, 35 to the exhaust pipe 14. The muffler 15 is covered from the outside.

  Therefore, any external force or radiant heat H applied to the fuel filter 23 or the like at the time of a collision of the vehicle 1 is prevented by the protector 41 so that the fuel filter 23 or the like is protected from being damaged or heated. .

  Further, a part of the protector 41 is disposed outside the fuel pipes 34 and 35 in the axial direction so as to restrict the detachment of one end portions of the fuel tubes 36 and 37 from the fuel pipes 34 and 35.

  For this reason, even when the vehicle 1 collides, due to some external force, one end of each of the fuel tubes 36 and 37 fitted to the fuel tubes 34 and 35 is detached from the fuel tubes 34 and 35. This separation is regulated by the front and rear protector bent portions 41b and 41b, which are a part of the protector 41. Therefore, it is more reliably prevented that one end of each fuel tube 36, 37 is detached from each fuel pipe 34, 35 due to the external force and the fuel 18 leaks. As a result, the inconvenience that the fuel 18 is ignited by the radiant heat H from the muffler 15 of the exhaust pipe 14 is more reliably prevented.

  In particular, when the engine 13 is driven, the fuel 18 in the fuel filter 23 is pressurized by the fuel pump 21. Therefore, if one end of each fuel tube 36, 37 is detached from each fuel pipe 34, 35 due to the external force, the fuel 18 leaks out due to its pressure, which is extremely preferable. Absent.

  However, as described above, the detachment of one end of each of the fuel tubes 36 and 37 from the respective fuel tubes 34 and 35 is regulated by the protector 41, so that the fuel 18 leaking out as described above is reliably prevented. Being extremely beneficial.

  The prevention of the fuel 18 leakage is achieved by using a part of the protector 41 for protecting the fuel filter 23 from some external force. Therefore, since the fuel 18 leakage can be prevented with a simple structure while suppressing an increase in mass, the productivity of the fuel system 17 in the vehicle is maintained well, and the production cost is reduced. can do.

  Although the above is based on the illustrated example, the fuel system auxiliary machine 22 may be a canister. Each of the fuel pipes 34 and 35 may be formed in a concentrated manner on the outer surface of one of the front and rear ends of the fuel filter 23. Further, each of the fuel tubes 36, 37, and 38 may be a hard resin tube such as nylon or a metal tube such as iron. Further, a pipe clamp may be used for the external fitting and fixing of one end of each fuel tube 36, 37 to each fuel pipe 34, 35.

DESCRIPTION OF SYMBOLS 1 Vehicle 2 Car body 13 Engine 14 Exhaust pipe 15 Muffler 17 Fuel system apparatus 18 Fuel 19 Fuel tank 20 Bracket 21 Fuel pump 22 Fuel system auxiliary machine 23 Fuel filter 26 Space 27 Axis 34 Fuel pipe 35 Fuel pipe 36 Fuel tube 37 Fuel tube 41 protector 41a protector body 41b protector bent part 42 bracket 43 fastener A dimension B dimension H radiant heat

Claims (1)

A fuel system auxiliary machine mounted on the vehicle body side, a fuel pipe projecting on the outer surface of the fuel system auxiliary machine, and a fuel pipe through which fuel flows, and one end portion of the fuel pipe extending along the axial direction of the fuel pipe In a fuel system apparatus in a vehicle comprising a fuel tube to be made and a protector that covers the fuel system auxiliary machine from the outside,
One end of the fuel tube is bent at a substantially right angle in the vicinity of the outer fitting portion to the fuel tube,
A portion of the protector is disposed axially outward of the fuel pipe so as to restrict detachment of one end of the fuel tube from the fuel pipe ,
The dimension from the outer surface of the fuel tube to a part of the protector is smaller in the axial direction of the fuel tube than the dimension in which one end of the fuel tube can be detached from the fuel tube. A fuel system apparatus for a vehicle characterized by the above.

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