JP2010285151A - Hybrid vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To maximally enlarge a luggage space when a rear seat is not used, in a hybrid vehicle having a power-supply unit on a lower portion of the luggage space provided on a rear side of the rear seat and a fuel tank on a lower portion of a seat cushion of a front seat. <P>SOLUTION: The rear seat 16 can be folded by moving the seat cushion 14 downward and reclining a seatback 15 forward. An upper surface of the folded seatback 15 is approximately flatly connected to a rear floor 27 that covers an upper portion of the power-supply unit 19 mounted on the lower portion of the luggage space 18 provided on the rear side of the rear seat 16. The luggage space 18 can be enlarged, therefore, to be efficiently used when the rear seat 16 is not used. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a hybrid vehicle in which a fuel tank is disposed below a seat cushion of a front seat, and a power supply unit for driving a motor for driving is mounted below a luggage space behind a rear seat.

  A battery pack that drives a motor for driving an automobile is mounted in a luggage space behind the rear seat, and an intake duct that supplies cooling air to the battery pack is opened to the side of the seat back of the rear seat. 1 is known.

  Also, by moving the seat cushion downward and tilting the seat back forward, the upper surface of the folded seat back and the rear rear floor of the seat are connected in a generally flat manner, so-called dive down type folding seat is the following patent It is known from document 2.

JP 2004-1683 A JP 2004-98722 A

  It is an object of the present invention to maximize the luggage space when the rear seat is not used in a hybrid vehicle having a power supply unit below the luggage space behind the rear seat and a fuel tank below the seat cushion of the front seat. And

  In order to achieve the above object, according to the first aspect of the present invention, the fuel tank is arranged below the seat cushion of the front seat, and the traveling motor is driven below the luggage space behind the rear seat. The rear seat can be folded by moving the seat cushion downward and tilting the seat back forward, and the upper surface of the folded seat back is then On the other hand, there is proposed a hybrid vehicle characterized in that it is connected to a rear floor covering the upper portion of the power supply unit in a substantially flat manner.

  According to the invention described in claim 2, in addition to the configuration of claim 1, the height of the rear floor substantially coincides with the height of the upper surface of the seat cushion in use, and the seat back in the folded state There is proposed a hybrid vehicle characterized by substantially matching the height of the upper surface.

  According to the invention described in claim 3, in addition to the structure of claim 1 or claim 2, a bridge plate is pivotally supported via a hinge at the front end of the rear floor, and the seat back is A hybrid vehicle is proposed in which the bridge plate is swung forward around the hinge in a state where the bridge plate is folded forward to be along the upper surface of the seat back.

  According to the configuration of claim 1, the rear seat can be folded by moving the seat cushion downward and tilting the seat back forward, and the upper surface of the folded seat back is below the luggage space behind the rear seat. Since the rear floor covering the upper part of the power supply unit mounted on the door is substantially flat, the luggage space can be expanded and used effectively when the rear seat is not used.

  According to the second aspect of the present invention, the height of the rear floor substantially coincides with the height of the upper surface of the seat cushion in use and substantially coincides with the height of the upper surface of the folded seat back. The luggage space can be expanded in the folded state.

  According to the third aspect of the present invention, the bridge plate is pivotally supported via the hinge at the front end of the rear floor, and the bridge plate is swung forward around the hinge with the seat back folded forward. Since it is along the upper surface of the seat back, it covers the gap between the seat back folded by the bridge plate and the rear floor, and eliminates the gap between the seat back and the rear floor to improve the appearance and prevent the articles from falling. be able to.

Overall side view of hybrid vehicle 1 is an enlarged view of the main part of FIG. 3 direction view of FIG. 2 (rear seat usage state) View in the direction of arrow 3 in FIG. 2 (rear seat dive down state) Sectional view along line 5-5 in FIG. 6-6 sectional view of FIG. Sectional view along line 7-7 in FIG. Sectional view taken along line 8-8 in FIG. Sectional view along line 9-9 in FIG. Sectional view taken along line 10-10 in FIG. Sectional view taken along line 11-11 in FIG. Exploded perspective view of the power supply unit The figure corresponding to the said FIG. 3 based on 2nd Example of this invention. 14-14 sectional view of FIG.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below based on examples of the present invention shown in the accompanying drawings.

  1 to 12 show a first embodiment of the present invention. FIG. 1 is an overall side view of a hybrid vehicle, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. (Rear seat usage state), FIG. 4 is a view in the direction of arrow 3 in FIG. 2 (rear seat dive down state), FIG. 5 is a sectional view taken along line 5-5 in FIG. 7 is a sectional view taken along line 7-7 in FIG. 4, FIG. 8 is a sectional view taken along line 8-8 in FIG. 4, FIG. 9 is a sectional view taken along line 9-9 in FIG. 11 is a cross-sectional view taken along line 11-11 of FIG. 4, and FIG.

  As shown in FIG. 1 to FIG. 3, a vehicle using an unshown engine and motor as a driving source for driving includes a front seat 13 including a seat cushion 11 and a seat back 12, and a rear seat including a seat cushion 14 and a seat back 15. 16. A fuel tank 17 is disposed below the seat cushion 11 of the front seat 13, and a power supply unit 19 for driving the motor is mounted below the luggage space 18 behind the rear seat 16.

  A pair of left and right stays 20, 20 are foldably provided on the lower surface of the seat cushion 14 of the rear seat 16. When the rear seat 16 is in use, the lower ends of the stays 20, 20 are provided on the lower seat floor 21 of the rear seat 16. The rear end of the seat cushion 14 is locked to the hooks 22 and 22 and is fixed to the seat cushion locking portion 24 provided on the raised portion 23 on the rear side of the lower seat floor 21. The seat back 15 can fall forward through a reclining shaft 25 provided at the rear end of the seat cushion 14.

  Accordingly, when the rear end of the seat cushion 14 is separated from the seat cushion locking portion 24 of the raised portion 23, the stays 20 and 20 swing forward with the hooks 22 and 22 serving as fulcrums, thereby causing the seat cushion 14 to move under the seat. It sinks while parallelly moving forward and downward to a position along the floor 21. Then, by swinging the seat back 15 forward about the reclining shaft 25, the rear seat 16 is folded so that the seat back 15 becomes substantially horizontal (see the chain line in FIG. 2).

  A power supply unit storage portion 26 that is recessed downward is continuous behind the raised portion 23 on the rear side of the under-seat floor 21, and the upper floor opening of the power supply unit storage portion 26 constitutes the floor of the luggage space 18. 27. The height of the rear floor 27 substantially coincides with the height of the upper surface of the seat cushion 14 of the rear seat 16 in use and substantially coincides with the height of the upper surface of the seat back 15 of the folded rear seat 16. A bridge plate 29 is pivotally supported at the front end of the rear floor 27 via a hinge 28, and the bridge plate 29 is swung forward in a state where the seat back 15 of the rear seat 16 is folded forward. (See FIG. 7), the gap between the rear floor 27 and the seat back 15 can be closed to prevent the article from falling.

  Next, the structure of the power supply unit 19 is demonstrated based on FIGS.

  The power supply unit 19 includes a container-like lower case 31 and a lid-like upper case 32, and the lower case 31 and the upper case 32 are coupled by bolts 33. In this state, a horizontally long rectangular cooling air inlet 34 is opened forward between the lower case 31 and the upper case 32. A plurality of cylindrical battery modules 35 are bundled by a pair of holders 36, 36, and a pair of front and rear battery support frames 37, 37 are fixed to the upper surfaces of the holders 36, 36 by bolts 38,. The battery support frames 37, 37 penetrate the upper part of the lower case 31 and extend in the left-right direction, and their ends are fixed to the left and right side frames 39, 39 with bolts 40. Thus, by connecting the both ends of the battery support frames 37, 37 to the left and right side frames 39, 39, the battery support frames 37, 37 can function as a cross member to increase the rigidity of the vehicle body.

  A heat transfer plate 41 and a control device storage box 42 are fastened to the upper surfaces of the battery support frames 37 and 37 with bolts 43... A motor control device 44 such as (downverter) is accommodated. Two fans 45, 45 are arranged at the rear of the lower case 31 and the upper case 32, and a cooling air discharge port 46 is formed behind the fans 45, 45. The cooling air discharge port 46 faces the opening 47 a of the cross member 47 that connects between the rear ends of the left and right side frames 39, 39, and a part of the cooling air discharged from the cooling air discharge port 46 is inside the cross member 47. A part is discharged out of the car through, and a part is returned to the car.

  Since the muffler 48 on the right side of the rear lower surface of the vehicle body is disposed, the power supply unit 19 is slightly deviated to the left side of the vehicle body with respect to the vehicle center line L in order to avoid interference with the muffler 48. The cooling air inlet 34 is also slightly deviated from the vehicle body center line L to the left side of the vehicle body.

  Next, the operation of the first embodiment having the above configuration will be described.

  As shown in FIGS. 5, 6, and 9, when the rear seat 16 is in use, the cooling air inlet 34 of the lower case 31 and the upper case 32 of the power supply unit 19 opens toward the rear end of the seat cushion 14. is doing. When the fans 45 and 45 in the power supply unit 19 are driven, the air-conditioned cooling air existing in the space in front of the rear seat 16 is sucked backward through the space between the lower surface of the seat cushion 14 and the upper surface of the lower seat floor 21. Then, the air flows from the cooling air inlet 34 into the lower case 31 and the upper case 32 of the power supply unit 19. A part of the cooling air cools the battery modules 35 when passing through the gap between the bundled battery modules 35.

  Further, the heat generated by the motor control device 44 stored in the control device storage box 42 is transmitted from the bottom wall of the control device storage box 42 to the heat transfer plate 41 and flows into the cooling air flowing along the lower surface of the heat transfer plate 41. Heat is dissipated. The cooling air that has cooled the battery modules 35 and the motor control device 44 in this way passes through the fans 45 and 45 and is discharged from the cooling air discharge port 46.

  When the rear seat 16 is in use, there is sufficient space between the lower surface of the seat cushion 14 and the upper surface of the lower seat floor 21 at both sides of the rear seat 16 shown in FIG. 5 and at the center of the rear seat 16 shown in FIG. Since there is a space, the cooling air in the passenger compartment is supplied to the cooling air inlet 34 without any problem.

  As shown in FIGS. 7 and 8, when the rear seat 16 is in the folded state, the seat cushion 14 and the seat back 15 of the rear seat 16 overlap with the upper surface of the lower seat floor 21, but also on both sides of the rear seat 16 shown in FIG. 8, the first cooling air introduction passage P1 is formed between the lower seat floor 21 and the seat cushion 14, and the second cooling air introduction passage is formed between the seat cushion 14 and the seat back 15. Since P2 is formed, the cooling air in the passenger compartment is supplied to the cooling air inlet 34 without any trouble, and the battery modules 35 and the motor control device 44 can be cooled.

  As described above, by providing the rear seat 16 that can be folded in a so-called dive-down manner, the upper surface of the folded seat back 15 and the rear floor 27 are connected to each other in a substantially flat manner to form a large-capacity luggage compartment. By securing the first and second cooling air introduction passages P1 and P2 along the rear seat 16, the cooling air in the vehicle compartment can be introduced into the cooling air introduction port 34 without any trouble. Moreover, when the occupant is seated on the rear seat 16, the cooling air flows along the lower seat floor 21 far from the occupant's ears, so that noise felt by the occupant can be reduced.

  Next, a second embodiment of the present invention will be described with reference to FIGS.

  A cross member 49 that connects the left and right side frames 39 and 39 is disposed in the left-right direction behind the seat cushion 14 of the folded rear seat 16. The cross member 49 includes a part of the raised portion 23 of the floor and has a box cross section. Openings 49a..., 49b. When the rear seat 16 is folded, the first cooling air introduction passage P1 is narrowed behind the seat cushion 14, but the cooling air passes through the inside of the cross member 49 at that portion, that is, the inside of the cross member 49 passes through the first cooling air. By using it as the introduction passage P1, a smooth flow of the cooling air can be enabled and the cooling effect can be enhanced.

  As described above, according to the first and second embodiments described above, the seat cushion 14 can be folded downward and the seat back 15 can be folded forward, and the upper surface of the folded seat back 15 can be folded. By providing the rear seat 16 connected to the rear floor 27 in a substantially flat manner, a large-capacity cargo compartment can be formed at the rear of the vehicle body. When the rear seat 16 is in an unfolded state, the lower surface of the seat cushion 14 and the upper surface of the lower seat floor 21 are connected to the cooling air inlet 34 of the power supply unit 19 disposed below the rear floor 27 so as to drive the motor for traveling. When the rear seat 16 is in a folded state, the vehicle can be introduced into the cooling air inlet 34 via the first and second cooling air introduction passages P1 and P2. Since the cooling air can be introduced from the room, the power supply unit 19 can be cooled regardless of the folded state of the rear seat 16.

  Further, since the first cooling air introduction passage P1 is formed between the lower surface of the seat cushion 14 of the folded rear seat 16 and the upper surface of the under-seat floor 21, the first cooling air introduction passage P1 is located at a low position far from the passenger's ear. It is possible to reduce noise by providing it.

  Since the fuel tank 17 is disposed below the front seat 13 located in front of the rear seat 16, the first and second cooling air introduction passages P 1 and P 2 for introducing the cooling air into the cooling air introduction port 34 are formed by the fuel tank 17. The cooling effect of the power supply unit 19 can be enhanced without being blocked.

  In addition, since the first cooling air introduction passage P1 passes through the hollow cross member 49 connecting the left and right side frames 39, 39 below the rear seat 16, the passage cross-sectional area of the first cooling air introduction passage P1 is sufficiently large. The cooling effect of the power supply unit 19 can be increased by securing it.

  Although the embodiments of the present invention have been described above, various design changes can be made without departing from the scope of the present invention.

  For example, in the embodiment, the vehicle including the front seat 13 and the rear seat 16 is illustrated, but the present invention can also be applied to a vehicle including a middle seat between the front seat 13 and the rear seat 16.

11 Seat cushion 13 Front seat 14 Seat cushion 15 Seat back 16 Rear seat 17 Fuel tank 18 Luggage space 19 Power supply unit 27 Rear floor 28 Hinge 29 Bridge plate

Claims (3)

A fuel tank (17) is disposed below the seat cushion (11) of the front seat (13), and a power supply unit (for driving a traveling motor below the luggage space (18) behind the rear seat (16)) 19) equipped with a hybrid vehicle,
The rear seat (16) can be folded by moving the seat cushion (14) downward and tilting the seat back (15) forward, and the upper surface of the folded seat back (15) is behind it. A hybrid vehicle characterized by being connected substantially flat to a rear floor (27) covering an upper portion of the power supply unit (19).   The height of the rear floor (27) substantially coincides with the height of the upper surface of the seat cushion (11) in use, and substantially coincides with the height of the upper surface of the seat back (15) in the folded state. The hybrid vehicle according to claim 1.   A bridge plate (29) is pivotally supported via a hinge (28) at the front end of the rear floor (27), and the bridge plate (29) is placed in a state where the seat back (15) is folded forward. The hybrid vehicle according to claim 1, wherein the hybrid vehicle is swung forward around a hinge (28) and is along the upper surface of the seat back (15).

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