JP3611734B2 - Cylinder mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a cylinder mounting structure in which a pressurized fuel such as natural gas is accommodated.
[0002]
[Prior art]
Conventionally, as shown in FIG. 6, a cylindrical cylinder 101 that accommodates gaseous fuel is attached to a vehicle that travels with gaseous fuel such as natural gas (see Japanese Patent Laid-Open No. 9-3000988).
[0003]
The cylinder 101 is installed below the floor 113 of the luggage compartment 112 at the rear of the rear seat 111, and the cylinder 101 is arranged outside the passenger compartment.
[0004]
[Problems to be solved by the invention]
However, in the mounting structure of the cylinder 101, since the cylinder 101 is provided in the lower part of the cargo compartment 112, the floor surface 113 of the cargo compartment 112 is greatly bulged upward. . As a result, there is a problem that the cargo space becomes narrow.
[0005]
The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a cylinder mounting structure that can suppress the amount of protrusion into the cargo space.
[0006]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, in the cylinder mounting structure according to claim 1 of the present invention, the cylinder mounting in a vehicle in which a cylindrical cylinder for storing pressurized fuel is disposed below the floor panel of the vehicle body. In the structure, the cylinder is constituted by a large diameter cylinder and a small diameter cylinder that are communicated with each other via a communication path, and the small diameter cylinder is disposed at a lower portion of the rear seat of the vehicle, and has a larger diameter than the small diameter cylinder. The large-diameter cylinder is disposed on the luggage compartment side at the rear of the rear seat, the floor panel is adapted to the cylinders and bulges upward, the floor panel is adapted to the small-diameter cylinder and bulges upward. The front bulge is set at a lower height than the rear bulge of the floor panel that is bulged upward to fit the large diameter cylinder. , Thereby forming a step between the front bulged portion and the rear bulging portion, on the front bulged portion, and arranged a seat cushion of the rear seat.
[0007]
That is, by dividing the cylinder in which pressurized fuel is accommodated into a large-diameter cylinder and a small-diameter cylinder, the diameter of each cylinder can be reduced without reducing the volume of pressurized fuel. . Thereby, the protrusion amount of the floor panel which swells upward in conformity with each cylinder is suppressed. Then, by arranging the small diameter cylinder at the lower part of the rear seat, the height of the rear seat is suppressed as compared with the case where the large diameter cylinder is arranged at the lower part of the rear seat.
[0009]
In addition , since the seat cushion of the rear seat is disposed on the front bulge portion lower than the rear bulge portion, when folding the seat back of the rear seat forward and overlaid on the seat cushion, the floor panel and The level difference from the back of the seat back is kept small.
[0010]
Furthermore, in the cylinder mounting structure according to claim 2 , a concave portion that bulges downward along the rear bulge portion is formed in the front bulge portion, and the small-diameter cylinder is disposed forward of the concave portion. While arrange | positioning, the said large diameter cylinder was arrange | positioned in the back side of the said recessed part.
[0011]
That is, a recessed portion is formed in the front bulge portion where the seat cushion of the rear seat is arranged, and the height of the seat cushion positioned on the recessed portion can be reduced, so that the position of the seated person's head Can be lowered.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing a vehicle 1 having a cylinder mounting structure according to the present embodiment, and shows a vehicle 1 having an engine using natural gas as fuel.
[0013]
A small-diameter cylinder 11 and a large-diameter cylinder 12 that store natural gas as pressurized fuel are provided at the rear of the vehicle 1. Both cylinders 11 and 12 are provided on a floor panel 13 of the vehicle body. It is arranged at the lower part and at a position on the front F side of the vehicle body from the spare tire 15 accommodated in the lower part of the luggage compartment 14 at the rear of the vehicle body. Both cylinders 11 and 12 are formed in a cylindrical shape so that the pressure of the stored natural gas is dispersed, and the volume thereof is configured to depend on the diameter of each cylinder 11 and 12. The diameter of the large-diameter cylinder 12 is set to be larger than that of the small-diameter cylinder 11, and both cylinders 11 and 12 are arranged so as to extend in the vehicle width direction.
[0014]
FIG. 2 is a module configuration diagram showing the fuel storage module 21. The small diameter cylinder 11 is connected to a filling joint 23 via a check valve 22, and the filling joint 23 is connected to a filler base 24. It is connected to the filling port 25 provided. The large-diameter cylinder 12 is also connected to the filling joint 23 via a check valve 26, and is configured so that natural gas filled from the filling port 25 is filled into both cylinders 11 and 12. Yes. The small-diameter cylinder 11 is connected to a supply joint 29 via a first communication pipe 28 as a solenoid valve 27 and a communication passage. The supply joint 29 includes an overflow prevention valve 30, a manual shut-off valve. 31 and a centralized piping 32 and the like are connected to an engine not shown. The large-diameter cylinder 12 is also connected to the supply joint 29 via a solenoid valve 33 and a second communication pipe 34 as a communication passage. Both cylinders 11 and 12 are connected to the communication pipes 28 and 34 and The communication is made through the supply joint 29. The cylinders 11 and 12 are provided with safety valves 35 and 36, respectively.
[0015]
As shown in FIGS. 1 and 3, the small-diameter cylinder 11 is disposed in a lower portion of a rear seat 41 provided in the vehicle 1, and the large-diameter cylinder 12 is disposed on the cargo compartment 14 side at the rear of the rear seat 41. Has been placed. As a result, the floor panel 13 of the vehicle 1 is formed such that the rear part R of the vehicle body in which both the cylinders 11 and 12 are disposed bulges upward in conformity with both the cylinders 11 and 12. The portion is formed with a front bulging portion 42 bulging upward in conformity with the small diameter cylinder 11 and a rear bulging portion 43 bulging upward in conformity with the large diameter cylinder 12. Yes. The height position of the front bulge portion 42 is set to a lower position lower than the height position of the rear bulge portion 43 so that the lower surfaces of the cylinders 11 and 12 are substantially the same height. It is configured. Further, a step is formed between the front bulge portion 42 and the rear bulge portion 43, and both bulge portions 42 and 43 are formed in a step-down direction. The front bulging portion 42 is formed with a concave portion 44 bulging downward extending in the vehicle width direction at a portion along the rear bulging portion 43, with the concave portion 44 as a boundary. The small diameter cylinder 11 is disposed on the vehicle body front F side, and the large diameter cylinder 12 is disposed on the vehicle body rear R side.
[0016]
A seat cushion 51 of the rear seat 41 is disposed on the front bulging portion 42, and the seat cushion 51 is formed with an immersing portion 52 that is sunk downward into a portion suitable for the concave portion 44. Yes. The immersion portion 52 is formed on the seat back 53 side supported by the seat cushion 51 so as to be tiltable, and is set at a position where the buttocks of the seated person M is located.
[0017]
FIG. 4 is a view showing a cylinder holder 61 that holds both the cylinders 11 and 12 to the vehicle body. The cylinder holder 61 extends in the vehicle width direction on the vehicle body front F side, and serves as a side member outside the drawing. A fixed front member 62, a central member extending in the vehicle width direction, a mid member 63 fixed to a side member (not shown), and both members 62, 63 are bridged to extend in the longitudinal direction of the vehicle body. A pair of support assemblies 64, 64, a rear cover of the support assemblies 64, 64, both end portions of the mid member 63, and both end portions of the front member 62, and covers a peripheral portion of the cylinder holder 61 And a support 65. On both the support assemblies 64, 64, arc-shaped lower bands 66, 66 adapted to the lower surfaces of the two cylinders 11, 12 are provided, and on the lower bands 66, 66, the two cylinders 11, 12 are provided. Arc-shaped upper bands 67, 67 adapted to the upper surface of the upper surface are provided. The upper bands 67 and 67 and the lower bands 66 and 66 are screwed to each other at the front end portion, the rear end portion, and the center portion, and the cylinders 11 and 12 are sandwiched between the bands 66 and 67. It is configured to be fixed by.
[0018]
The cylinder holder 61 is configured such that an inspection cover 71 as shown in FIG. 5 is detachably attached. In the normal state, the cylinders 11 and 12 are covered by the inspection cover 71, while at the time of inspection, The inspection cover 71 is removed so that inspections such as scratches can be performed. Further, as shown in FIG. 3, an exhaust pipe 73 that is thermally shielded by a heat shield plate 72 extending from the floor panel 13 is disposed on the vehicle body front F side of the cylinder holder 61. The cover support 65 of the cylinder holder 61 facing the heat shield plate 72 is configured so as to obtain an effect of blocking heat from the exhaust pipe 73 and an effect of preventing damage caused by jumping stones.
[0019]
In the present embodiment according to the above configuration, each of the cylinders in which the natural gas is stored is divided into the small-diameter cylinder 11 and the large-diameter cylinder 12, thereby reducing the amount of natural gas stored. The diameter of the cylinders 11 and 12 can be reduced. Thereby, since the protrusion amount of the floor panel 13 which swells upward in conformity with the cylinders 11 and 12 can be suppressed, the cylindrical cylinder containing the natural gas is constituted by one cylinder and has a predetermined amount. Compared to the conventional case where the diameter has to be increased in order to ensure the capacity, the cargo space can be widened.
[0020]
And since the height of the rear seat 41 can be suppressed by arranging the small-diameter cylinder 11 having a small diameter size at the lower portion of the rear seat 41, compared with the case where the large-diameter cylinder 12 is arranged at the lower portion of the rear seat 41. Thus, the head clearance C from the head H of the seated person M to the ceiling T can be widened (see FIG. 1), and compared with the case where both cylinders 11 and 12 are arranged in the lower part of the luggage compartment 14. The space of the luggage compartment 14 can be expanded.
[0021]
Further, the seat cushion 51 of the rear seat 41 has a front bulge set at a lower position than the rear bulge portion 43 in the bulged portion of the floor panel 13 bulged upward according to the cylinders 11 and 12. Since the seat back 53 of the rear seat 41 is folded to the front F side and folded on the seat cushion 51 (see FIG. 3), the rear surface of the floor panel 13 and the seat back 53 is disposed on the portion 42. The head clearance C from the head H of the seated person M to the ceiling T can be widened (see FIG. 1).
[0022]
Further, a concave portion 44 is formed in the front bulging portion 42 where the seat cushion 51 of the rear seat 41 is disposed, and the portion of the seat cushion 51 located on the concave portion 44 is immersed downward. A portion 52 is formed. Moreover, since the said recessed part 44 is formed between the cylindrical small diameter cylinder 11 and the large diameter cylinder 12, the hip point HP of the seated person M is lowered | hung without making the diameter size of both cylinders 11 and 12 small. (See FIG. 1). As a result, the head clearance C of the seated person M can be lowered and the head clearance C can be further widened, so that the comfortability can be improved.
[0023]
【The invention's effect】
As described above, in the cylinder mounting structure according to claim 1 of the present invention, the cylinder in which the pressurized fuel is accommodated is divided into the large-diameter cylinder and the small-diameter cylinder so that the accommodation amount can be reduced. Without decreasing, the diameter of each cylinder can be reduced. As a result, the protruding amount of the floor panel that bulges upward in conformity with each cylinder can be suppressed, so that the cylindrical cylinder that accommodates pressurized combustion is composed of a single cylinder, ensuring a predetermined capacity Therefore, the cargo space can be widened as compared with the conventional case where the diameter must be increased.
[0024]
And by placing a small-diameter cylinder with a small diameter at the bottom of the rear seat, the height of the rear seat can be suppressed, so compared to the case where a large-diameter cylinder is placed at the bottom of the rear seat, The head clearance from the section to the ceiling can be widened, and the cargo space can be widened as compared with the case where both cylinders are arranged in the lower part of the cargo space.
[0025]
Further, on the lower front bulging portion than after lateral bulging portion, the seat cushion of the rear seat is located, at the time of folding overlaid onto the seat cushion to defeat seat back of the rear seat to the front floor panel And the back of the seat back can be suppressed to a small level, and the head clearance from the head of the seated person to the ceiling can be widened.
[0026]
Further, in the cylinder mounting structure according to claim 2, a recess is formed in the front bulge portion where the seat cushion of the rear seat is disposed, and the height of the seat cushion positioned on the recess can be reduced. it can. Moreover, since the said recessed part is formed between the cylindrical small diameter cylinder and the large diameter cylinder, a seated person's hip point can be lowered | hung, without making the diameter size of both cylinders small. As a result, the head clearance of the seated person can be lowered and the head clearance can be further increased, so that the comfortability can be improved.
[Brief description of the drawings]
FIG. 1 is a schematic diagram showing an embodiment of the present invention.
FIG. 2 is a module configuration diagram showing a fuel storage module of the same embodiment;
FIG. 3 is an enlarged view showing a main part of FIG. 1;
FIG. 4 is a perspective view showing a cylinder holder of the same embodiment.
FIG. 5 is a perspective view showing an inspection cover attached to the cylinder holder of the same embodiment.
FIG. 6 is a schematic view showing a conventional cylinder mounting structure.
[Explanation of symbols]
1 Vehicle 11 Small-diameter cylinder 12 Large-diameter cylinder 13 Floor panel 14 Cargo compartment 28 First communication pipe (communication passage)
34 Second communication pipe (communication path)
41 Rear seat 42 Front bulging portion 43 Back bulging portion 44 Recessed portion 51 Seat cushion 53 Seat back

Claims (2)

In a cylinder mounting structure in a vehicle in which a cylindrical cylinder that contains pressurized fuel is disposed at the lower part of the floor panel of the vehicle body,
The cylinder is constituted by a large-diameter cylinder and a small-diameter cylinder that are communicated with each other via a communication path, and the small-diameter cylinder is disposed at a lower portion of the rear seat of the vehicle, and the large-diameter that is larger in diameter than the small-diameter cylinder. A cylinder is arranged on the luggage compartment side at the rear of the rear seat, and the floor panel is adapted to each cylinder and bulges upward .
The front bulge portion of the floor panel bulging upward in conformity with the small diameter cylinder is lower than the rear bulge portion of the floor panel bulging upward in conformity with the large diameter cylinder. The cylinder mounting structure is characterized in that a step is formed between the front bulge portion and the rear bulge portion, and a seat cushion of the rear seat is disposed on the front bulge portion. . The forward bulging portion is formed with a concave portion that bulges downward along the rear bulging portion, the small-diameter cylinder is disposed in front of the concave portion, and the large bulge is disposed on the rear side of the concave portion. The cylinder mounting structure according to claim 1, wherein a diameter cylinder is arranged .

Images