JP3355156B2 - Ventilation structure of automotive heater duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heater duct for an automobile, and more particularly, to a heater duct that is installed along a cabin floor of a wagon-type car and blows warm air toward a foot of an occupant sitting on a rear seat.

[0002]

2. Description of the Related Art A wagon-type car or the like having a flat passenger compartment floor has
In some cases, a heater duct is extended along the cabin floor, and hot air is blown from the outlets of the duct terminals provided below the left and right front seats toward the feet of the rear seats behind. As shown in FIG. 3 and FIG. 4, this type of heater duct 1 is provided at the center in the width direction at the front of the cabin floor from a heater unit (not shown) in front of the cabin to the rear along the floor panel 2. The rear end is branched into right and left forks, and each branch duct 11a, 11b extends below the left and right front seats 5a, 5b. Heater duct 1
Has a flat upper surface, is installed in a state of being embedded in a urethane mat 3 spread on a floor panel 2, and is covered with a floor carpet 4.

The front seats 5a and 5b are respectively
It is mounted on a pair of left and right parallel seat legs 6a, 6b that are fixed on the vehicle floor and extend in the front-rear direction. The branch ducts 11a and 11b of the heater duct 1 extend so as to cross below the seat legs 6a of the front seats 5a and 5b, and the terminal penetrates the hole of the floor carpet 4 and the outlets 12a and 12b. The warm air is blown out to the feet of the occupant seated on the rear seat 7.

In a wagon-type vehicle or the like, both front seats 5a and 5b are installed at an interval from each other, and a passage for occupants to move back and forth is provided at the center in the width direction of the cabin floor. For this reason, the outlets 12a and 12b below the front seats 5a and 5b are located near the left and right ends of the passenger compartment floor. Only the feet of the occupant seated on the left and right sides of 7 can reach, and the feet of the occupant seated in the center cannot be sufficiently warmed.

Therefore, as shown in FIGS. 5 and 6, a branch duct 11c is formed at the center between the two branch ducts 11a and 11b and extends rearward along the passage of the passenger compartment floor so that the rear end of the duct has a three-pronged shape. , Outlet 12 of branch duct 11c
The warm air is blown from c to the feet of the occupant seated in the center of the rear seat 7. Outlet 12c
Is disposed substantially flush with the hole in the floor carpet 4 at the center position of the passage in the passenger compartment, and the outlet 8 c is covered with the grill 8.

However, the air outlet 12c set in the passage of the passenger compartment is conspicuous and the appearance of the passenger compartment floor is not good. In addition, a large grill 8 for the purpose of protecting the air outlet 12c and preventing foreign matter from entering the air outlet 12c is provided in the air outlet 12c.
In addition, the grill 8 is protruded above the floor carpet 4, so that a convex portion is formed in the passage, which hinders the occupant from walking.

[0007]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a seat in the center of a rear seat without impairing the appearance of a passenger compartment and providing an outlet or a grill in a passage on the passenger compartment floor, which obstructs a passenger from walking. It is an object of the present invention to provide a blower structure for a heater duct that can blow warm air to the feet of a passenger who has made a move.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a heater duct which is installed in the front-rear direction substantially at the center in the width direction of the front part of a passenger compartment floor and is covered with a floor carpet. Each branch duct extends below the left and right front seats installed across the widthwise center passage of the passenger compartment floor, and the outlet of each branch duct projects above the floor carpet. In the structure of the heater duct that blows warm air from each of the outlets toward the rear rear seat, a branch duct is formed at an intermediate position of the branch duct and extends along the passenger compartment floor and toward the center of the rear seat. The outlet of the branch duct is arranged at a position directly below a seat leg supporting a side end of the front seat near the center of the cabin, while the branch carpet has the branch outlet. The air outlet and a position opposed to the extract,
Extends in the direction of extension of the branch duct, the bottom surface of the branch duct
Forming a groove-like concave portion having an opening corresponding to the outlet at the bottom end and gently depressing and inclining diagonally downward toward the outlet, facing the outlet at the opening, Then, warm air is blown out toward the center foot of the rear seat along the recess.

The outlet of the branch duct is provided directly below the seat leg of the front seat, and the warm air blown out from the outlet is supplied toward the center foot of the rear seat by the guide of the recess formed in the floor carpet. As a result, the outlet does not appear in the passage on the passenger compartment floor, so that the appearance of the passenger compartment is not impaired. Also, the outlet does not obstruct the occupant's walking.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. The cabin floor is floor panel 2.
The structure is such that a thick urethane mat 3 is spread over the surface and the surface is further covered with a floor carpet 4 made of a non-woven fabric, so that the entire floor is formed almost flat. Front seats 5a and 5b are installed on the left and right sides at the front of the passenger compartment floor, and a passage through which an occupant can walk is provided between the front seats 5a and 5b. Front seat 5a,
A rear seat 7 is provided behind 5b, and the rear seat 7 is a bench seat for three people that covers the entire width of the cabin.

The front seats 5a and 5b are respectively
A pair of left and right seat legs 6a, 6 fixed to the cabin floor
b is slidably mounted in the front-rear direction. The seat legs 6a and 6b are channel steel members extending in the front-rear direction and having a substantially U-shaped cross section. Both are disposed in parallel to each other with their openings facing each other, and fixed downwardly projecting fixing portions 61 formed at both front and rear ends are floor carpets. 4 and is fixed to the convex seat surface 21 of the floor panel 2 by bolting through the hole (FIG. 3).

The front seats 5a and 5b are mounted before and after the lower edges of the upper rails 51 provided along the left and right side edges of the bottom surface of the seat cushion 50 are fixed to the upper surfaces of the seat legs 6a and 6b via spacers 61. It is slidably fitted into the extended lower rail 52 and is movable in the front-rear direction. Reference numeral 53 in the drawing denotes a shoe interposed between the upper rail 51 and the lower rail 52 to smooth the relative movement between the two. Upper rail 51 and lower rail 52
The left and right sides are covered by a cover member 54 having a substantially inverted U-shaped cross section fixed to the bottom surface of the seat cushion 50 integrally with the upper rail 51.

A heater duct 1 for sending warm air to the feet of the rear seat 7 is provided at the front of the cabin floor. The heater duct 1 is made of a synthetic resin and includes a duct body 10 extending in the front-rear direction along the cabin floor, and branch ducts 11a and 11b whose rear ends are bifurcated left and right. The heater duct 1 has an upper surface formed flat, the lower surface thereof is superimposed on a floor panel 2, installed so as to be embedded in a urethane mat 3, and covered with a floor carpet 4.

The left and right branch ducts 11 of the heater duct 1
The front seats 5a, 11b extend obliquely rearward and outward from the rear end of the duct body 10, respectively, and pass through the lower sides of the front seats 5a, 5b so as to cross the seat legs 6a near the center of the vehicle compartment. 5b. The rear ends of the branch ducts 11a and 11b are bent in a substantially Z-shape where the terminal is at a high position, and the floor carpet 4
Air outlets 12a, 12 which project through the hole of the floor carpet 4 and project toward the rear at the terminal.
b is provided.

A branch duct 11b extending below the front seat 5b on the passenger seat side is formed with a branch duct 13 branching from an intermediate position and extending obliquely rearward and inward toward the rear seat 7. The branch duct 13 has a small-diameter duct shape protruding from a side surface of the branch duct 11b, and
The length is short, and the terminal is located immediately below the seat leg 6a of the front seat 5b. An outlet 14 for blowing out warm air is formed in the terminal.

On the other hand, a recess 41 is formed in the floor carpet 4 at a position facing the outlet 14 of the branch duct 13. The concave portion 41 is formed by pressing the floor carpet 4 and is formed. The concave portion 41 has a shallow U-shaped groove shape and extends in the extending direction of the branch duct 13. The bottom surface of the concave portion 41 is composed of an inclined bottom surface 411 that is gently depressed and inclined diagonally downward toward the outlet 14 of the branch duct 13 and an upright bottom surface 412 that rises steeply from the bottom end thereof. Extending.

The recessed portion 41 has an upright bottom surface 412 located immediately below the seat leg 6a, an inclined bottom surface 411 extending from a position directly below the seat leg 6a toward a foot in the center of the rear seat 7, and is connected to the general surface of the floor carpet 4. The starting end is located slightly closer to the vehicle center than the side end of the front seat 5b. A urethane mat 3 is spread below the inclined bottom surface 411 and the floor panel 2 to reinforce the inclined bottom surface 411 and prevent its deformation. The opening 42 is formed in the rising bottom surface 412 of the concave portion 41.
Through the end of the branch duct 13 and the outlet 14 into the recess 4
I'm facing one. A small grid-like grill 15 for preventing foreign matter from entering is attached to the outlet 14.

A portion of the warm air passing through the branch duct 11b of the heater duct 1 is diverted to the branch duct 13 and blown out from the outlet 14. The warm air is guided by the inclined bottom surface 411 of the concave portion 41 of the floor carpet 4 and the side surfaces 413 on both sides thereof, and is sent out toward the feet of the occupant seated in the center of the rear seat 7 along the passenger compartment floor. in this case,
The inclination angle of the inclined bottom surface 411 of the concave portion 41 is the floor panel 2
An angle of 10 ° to 15 ° is optimal. If the angle of inclination is large, hot air cannot be sent out along the floor and blows up. If the angle is small, the length of the concave portion 41 increases.

According to the heater duct outlet structure of the present embodiment, the feet of the occupant sitting on the left and right sides of the rear seat 7 along the passenger compartment floor from the outlets 12a and 12b of the left and right branch ducts 11a and 11b, respectively. The warm air can be blown out, and the warm air can be blown from the outlet 14 of the branch duct 13 to the foot of the occupant in the center of the rear seat 7 along the passenger compartment floor. Also, the feet of the occupants can be sufficiently warmed.

The outlet 14 for blowing hot air toward the center foot of the rear seat 7 is hidden by the front seat 5b, and a concave portion 41 of the floor carpet 4 for guiding the hot air is also formed at the end of the passage at the center of the vehicle floor. As a result, the appearance of the cabin floor is not impaired, and does not obstruct the occupants traveling in the aisle. Further, the grill 15 for preventing foreign matter from entering the air outlet 14 can be small and does not require strength.

In the above embodiment, the rear seat 7
The outlet 14 for blowing warm air to the center foot of the vehicle and the concave portion 41 of the floor carpet 4 for guiding warm air are installed only on the front seat 5b side of the passenger seat, but not limited to this, on the front seat 5a side of the driver's seat. May be provided only, or may be provided below both front seats 5a and 5b.

[0022]

According to the present invention, warm air can be sent to the feet of an occupant sitting in the center of the rear seat without providing a heater duct outlet in the center of the cabin floor. Therefore, the air outlet impairs the appearance of the cabin floor,
It does not disturb the occupants in the cabin. Further, since a large grill member for protecting the air outlet is not required, the cost can be reduced.

[Brief description of the drawings]

FIG. 1A is a schematic plan view showing an arrangement of a heater duct of the present invention, and FIG. 1B is a longitudinal sectional view taken along line IB-IB in FIG. 1A.

FIG. 2 is a longitudinal sectional view taken along the line II-II of FIG. 1 (B).

FIG. 3 is a longitudinal sectional view taken along the line III-III in FIGS. 1 (A), 4 and 5.

FIG. 4 is a schematic plan view showing an arrangement of a conventional heater duct.

FIG. 5 is a schematic plan view showing the arrangement of another conventional heater duct.

6 is a vertical sectional view taken along the line VI-VI in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heater duct 11a, 11b Branch duct 12a, 12b Branch duct outlet 13 Branch duct 14 Branch duct outlet 4 Floor carpet 41 Depression 42 Opening 5a, 5b Front seat 6a, 6b Seat leg 7 Rear seat

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Seiji Kamei 1-1-1, Showa-cho, Kariya-shi, Aichi Pref. Denso Corporation (56) References JP-A-9-99727 (JP, A) (JP, U) JP-A 62-106815 (JP, U) JP-A 2-80014 (JP, U) JP-A 6-68918 (JP, U) JP-A 60-57414 (JP, U) ( 58) Field surveyed (Int.Cl. ⁷ , DB name) B60H 1/34 B60H 1/00 102

Claims (1)

(57) [Claims] 1. A heater duct which is installed in the front-rear direction substantially at the center in the width direction of a front portion of a passenger compartment floor and is covered with a floor carpet. Ducts are extended below the left and right front seats placed across the widthwise central portion of the passenger compartment floor, and the outlets of each branch duct are projected onto the floor carpet and rearward from each of the above outlets. A branch duct extending toward the center of the rear seat along the vehicle cabin floor at an intermediate position between the branch ducts, and an outlet of the branch duct. Is located directly below the seat leg that supports the side end of the front seat near the center of the cabin, while the floor carpet has a position facing the outlet of the branch duct. In the direction in which the branch duct extends.
And a bottom having a groove-like concave portion having an opening corresponding to the outlet at the bottom end and being gently depressed and inclined obliquely downward toward the outlet of the branch duct. Wherein the warm air is blown from the blow outlet to the center foot of the rear seat along the concave portion.