JP4281699B2 - Heater duct structure for vehicles - Google Patents

Description

  The present invention relates to a vehicle heater duct structure that blows warm air from a blow-out opening provided at a lower end portion of a vehicle compartment trim on a rear side surface of a vehicle compartment toward a plurality of passengers seated on a rear seat.

  As shown in FIG. 10, conventionally, a heater unit 7 is housed in a rear portion of a passenger compartment of a wagon vehicle or the like at an inner position of a quarter trim 6 constituting a side surface of the rear portion of the passenger compartment behind the sliding door opening 5. A heater duct 1 extends forward from 7 toward the lower end of the front end of the quarter trim 6 along the inner surface of the quarter trim 6, and from a plurality of outlets 2 a and 2 b formed at the lower end of the front end of the quarter trim 6. There is one in which warm air is blown out to the feet of passengers in a three-seat rear seat (not shown) installed in the rear passenger compartment.

As a conventional heater duct of this type, as described in Patent Document 1 below, there is one provided with a branch duct that branches from the vicinity of the front end of the duct body through which the main stream of warm air passes obliquely forward. . And as shown in FIG. 11, while connecting the front-end | tip of the said main duct to the blower outlet 2a formed in the rear wheel house 8 side of the front-end lower end part of the quarter trim 6, the front-end | tip of the said branch duct is ahead of the blower outlet 2a. Of the three passengers seated on the rear seat from the outlet 2a, the warm air is blown toward the sides far from the outlet and the feet of the passengers a and b in the center of the seat. The hot air is blown out from the front outlet 2b toward the feet of the passenger c on the side close to the outlet.
Japanese Patent Laid-Open No. 2002-2257

  However, in the conventional structure, since the two outlets 2a and 2b are provided in a limited space between the slide door opening 5 and the rear wheel house part 8 at the lower end of the front end of the quarter trim 6, each outlet 2a, There was a problem that the diameter of 2b was reduced and the noise during hot air blowing was increased. Further, since the two outlets 2a and 2b are formed in a narrow space, it cannot be said that the appearance is good. Further, components such as an airtight seal material for connecting the outlets 2a and 2b to the duct body and the branch duct are not provided. There is a problem that the number of parts is large and the cost is high. Therefore, the present invention heats the feet of a plurality of passengers seated on the rear seat by blowing hot air from two outlets in two directions, ie, the center of the passenger compartment and the diagonally forward side of the passenger compartment, without providing two outlets. It is possible to reduce the sound of hot air blowing without making the outlet smaller than necessary, and to achieve a low-cost vehicle heater duct structure with good appearance of the outlet. .

In the present invention, a vertically long outlet is provided at the lower end of the compartment trim on the rear side surface of the passenger compartment, and a duct opening of a heater duct installed on the inner surface side of the passenger compartment trim is communicated with the outlet. In the vehicle heater duct structure that blows warm air toward the feet of the passengers of the seat, the heater duct is provided with a partition wall that partitions the inside of the duct in the width direction, and the first air passage and the second air passage The partition wall is formed into a substantially U-shaped bulging rib shape that bulges into the duct from one duct side wall of the heater duct, and the other end of the partition wall faces the other. It is joined to the side wall, and the duct opening of the heater duct is formed in a horizontal wall at the upper and lower intermediate positions by the end of one side surface of the partition wall, and the hot air from the first air passage is blown out Upper half of mouth None to blow into the passenger compartment central side substantially vehicle width direction from and to the above-mentioned duct opening, on the lower side of the horizontal wall, an inclined wall extending obliquely downward by the terminal of the other side portion of the partition wall formed to constitute to blow hot air of the second air passage from the lower half of the air outlet to the obliquely casing side (claim 1).

The hot air is blown out from one outlet to the center of the passenger compartment and the diagonally forward side of the passenger compartment, so it is not necessary to make the outlet more small than necessary, and it is possible to reduce the hot air blowing sound and Can improve the appearance of the mouth. The partition wall, horizontal wall and inclined wall can be formed integrally with the heater duct, and duct productivity is good.

The blowout port of the casing trim projects into the duct opening at the opening side edge of the upper half portion so as to face the partition wall and shields the first air passage side and the second air passage side. A partition plate is provided ( Claim 2 ). The warm air from the first air passage side and the warm air from the second air passage side are not mixed in the upper half of the outlet, and the direction of the warm air in both air passages can be ensured. Moreover, the ventilation area of a 2nd air path can be enlarged in the upper half part side of a blower outlet, and an air volume can be increased.

  According to the present invention, the warm air is blown out from the one outlet in two directions, ie, the center side of the passenger compartment and the front side of the passenger compartment, without providing two outlets as in the conventional structure. The heating performance of heating the feet of a plurality of passengers seated on the vehicle can be ensured, and the blowing sound of the warm air can be reduced because the outlet is not reduced. In addition, the appearance of the air outlet is good, and there are few components such as an airtight seal material connecting the air outlet and the heater duct, and the cost is low.

  1 to 6, the structure of the heater duct 1 for heating the feet of the occupants of the rear seat by blowing warm air from the outlet 2 formed at the lower end of the quarter trim 6 on the side of the rear of the passenger compartment. A first embodiment to which the invention is applied will be described. As in the conventional structure shown in FIG. 10, the heater duct 1 extends forward from the heater unit 7 housed in the rear inner position of the quarter trim 6 along the inner surface of the quarter trim 6, and the front end is the rear wheel. It avoids the house portion 8 and bends obliquely downward and is connected to the outlet 2 provided at the lower end position of the front end of the quarter trim 6.

  As shown in FIGS. 1, 3 to 5, the air outlet 2 is formed in a vertically long rectangular shape that is cut out from the panel surface of the quarter trim 6 and opens toward the center of the passenger compartment. The opening side edge on the vehicle rear side is formed obliquely so that the opening width on the upper end side is slightly larger than the width. A frame-shaped peripheral flange 21 is formed at the periphery of the outlet 2 by bending the panel surface of the quarter trim 6 toward the inside of the opening to surround the outlet 2. A plurality of (for example, six) rectifications extending substantially horizontally between the opening side edge 21a on the vehicle front side and the opening side edge 21b on the rear side within the outlet 2 with a predetermined interval in the vertical direction. The plate 22 is integrally formed. The three rectifying plates 22 located on the upper half side of the outlet 2 are formed in a substantially horizontal plane toward the passenger compartment side, and the remaining rectifying plates 22 located on the lower half side are located on the passenger compartment side. A downward inclined surface is formed.

  As shown in FIGS. 1 and 2, the heater duct 1 is a synthetic resin blow-molded product, and is a cylindrical body having a flat cross-sectional shape with a short diameter in the vehicle width direction. The heater duct 1 is installed so that the duct side wall on the passenger compartment side is along the inner surface of the quarter trim 6. A duct opening 10 that is slightly larger than the duct opening 10 corresponding to the outlet 2 is formed at the front end of the heater duct 1 extending in a downwardly inclined manner toward the outlet 2 on the duct side wall. It is formed towards. The periphery of the opening 10 of the duct is bonded to the inner surface of the quarter trim 6 around the air outlet 2 via an airtight sealing material 101 and communicated with the air outlet 2.

  As shown in FIGS. 1 to 5, a partition wall 11 that partitions the inside of the duct in the width direction is formed near the tip of the heater duct 2, and the first air partitioned by the partition wall 11 is formed in the duct. A passage 12a and a second air passage 12b are formed. The partition wall 11 has a rib shape that bulges into a substantially U-shaped cross section from the duct side wall on the vehicle exterior side, and is integrally formed with the duct at the time of blow molding. The partition wall 11 is joined to the inner surface of the duct side wall on the vehicle compartment side facing the front end surface 110. The partition wall 11 is formed at a position closer to one side in the duct width direction, and the passage diameter of the second air passage 12b is smaller than the air passage diameter of the first air passage 12a.

The partition wall 11 starts from the middle position of the inclined portion of the front end of the heater duct 1 and extends to the upper edge of the duct opening 10 along the duct extending direction. Further, the front end surface 110 of the partition wall 11 is on the vehicle rear side of the duct opening 10. Of the duct opening 10 to a position slightly below the middle of the upper and lower sides of the duct opening 10 (for example, about 3/5 to 2/3 from the upper and lower dimensions of the duct opening 10). position). Further, the partition wall 11 is bent toward the front of the vehicle and extends across the duct opening 10 to the duct edge at the front of the vehicle.

In this case, the front end surface 110 of the bent partition wall 11 is gradually widened toward the front of the vehicle, and the upper side surface of the bent partition wall 11 extends horizontally and crosses the lower end of the first air passage 12a. A wall 13 is formed. Further, the lower side surface of the bent partition wall 11 forms an inclined wall 14 that extends obliquely forward and downward toward the lower end corner portion of the side edge 102 of the duct opening 10 on the vehicle front side.

  As a result, the end of the upper first air passage 12a partitioned by the bent partition wall 11 is opened by the horizontal wall 13 toward the center of the passenger compartment through the upper half of the duct opening 10 and the outlet 2 It communicates with the upper half. The terminal of the lower second air passage 12 b communicates with the lower half of the outlet 2 through the inclined wall 14 through the lower half of the duct opening 10. The inclined wall 14 is also inclined in the vehicle width direction toward the front oblique vehicle compartment side, whereby the terminal of the second air passage 12b has a tapered opening shape toward the vehicle compartment side obliquely downward front.

  Further, on the second air passage 12b side, the opening side edge 21b on the vehicle rear side of the outlet 2 is opposed to the partition wall 11 along the side edge 103 on the vehicle rear direction side of the upper half of the duct opening 10. A partition plate 23 protruding from the upper half portion into the heater duct 2 is provided. This is because the partition wall 11 extends into the duct opening 10, so that a gap is formed between the side edge 103 and the partition wall 11 in the upper half of the duct opening 10, and the second air passage 12 b is formed. Although it opens, the partition plate 23 protruding from the opening side edge 21b of the outlet 2 is positioned so as to overlap the side surface (side surface on the second air passage 21b side) 112 of the partition wall 11 to block the gap. A first air passage 12a and a second air passage 12b are defined in the upper half of the outlet 2.

  According to the present embodiment, the warm air flowing through the heater duct 1 is divided into the first air passage 12a and the second air passage 12b by the partition wall 11. The wind flow (arrow A) flowing through the first air passage 12a hits the horizontal wall 13 to change the direction of the wind flow, and blows out from the upper half of the blowout port 2 toward the center of the passenger compartment, as indicated by the arrow A in FIG. The side far from the outlet 2 and the feet of the passengers a and b in the center of the seat are heated. On the other hand, the airflow (arrow B) flowing through the second air passage 12b is partitioned by the partition plate 23 on the upper half side of the air outlet 2 so that the warm air does not leak to the air outlet 2 side, and the first air passage It flows to the lower half side of the outlet 2 without being mixed with the warm air of 12a. Then, the air is guided along the inclined wall 14 and blown from the lower half of the air outlet 2 obliquely downward to the front of the passenger compartment. As shown by the arrow B in FIG. 6, the feet of the passenger c on the side near the air outlet 2 are heated. To do.

  As described above, since the warm air is blown out from the one outlet 2 in the two directions of the vehicle compartment center side A and the vehicle compartment diagonal front side B, it is not necessary to provide two outlets as in the conventional structure. Since it is not necessary to make the mouth 2 small, the blowing sound of warm air can be reduced. Further, the appearance of the blowout port 2 is good because only one blowout port 2 is required, and the number of components such as an airtight seal material connecting the heater duct 1 and the blowout port 2 can be reduced as compared with the conventional structure.

  Next, another heater duct structure to which the present invention is applied will be described with reference to FIGS. The basic structure is substantially the same as that of the heater duct structure described above, and differences will be mainly described. In the drawings, the same members are denoted by the same reference numerals, and description thereof will be omitted. As shown in FIGS. 7 to 9, the heater duct 1 swells from the duct side wall on the passenger compartment side into the first air passage 12a at the position above the duct opening 10 to adjust the flow of hot air. A first adjusting unit 15 is provided. The first adjusting portion 15 is provided in the duct width direction, and is formed in a substantially V-shaped longitudinal section by a guide surface 151 extending obliquely downward from the duct side wall on the passenger compartment side into the first air passage 12a and a bottom surface 152. It is. The protruding amount of the first adjusting portion 15 is about one third to one fifth of the duct diameter in the vehicle width direction.

  Further, the heater duct 1 has a bulged portion in which a duct edge at the front of the vehicle is bulged forward at a position in front of the upper half of the duct opening 10 so as to expand the passage width of the terminal of the first air passage 12a. 16 is formed. The bulging portion 16 has an upper half surface 161 extending in a downwardly inclined manner, and a lower half surface 162 formed in an arc shape toward the rear of the vehicle. The lower edge of the bulging portion 16 is located at substantially the same height as the horizontal wall 13 at the end of the first air passage 12a.

  Further, in the first air passage 12a, between the bulging portion 16 and the partition wall 11, the hot air flows from the duct side wall on the vehicle outer side toward the first air passage 12a to adjust the flow of hot air. A second adjusting unit 17 is provided. The second adjustment portion 17 is provided in the vertical direction, and bulges in a substantially V-shaped cross section from the duct side wall on the vehicle outer side. In the second adjustment portion 17, the side surface 171 on the bulging portion 16 side is formed in an inclined shape from the bulging portion 16 side to the oblique rear side and the duct opening 10 side. The side wall 172 on the side of the partition wall 11 is formed in the vehicle width direction so as to face the side surface 111 of the partition wall 11 with a space therebetween, and a gap is formed between the second adjustment portion 17 and the partition wall 11. is there. The first adjusting portion 15, the bulging portion 16 and the second adjusting portion 17 are integrally formed when the duct is blow-molded.

  In the second air passage 12b, the duct side wall on the outside of the vehicle corresponds to the projecting end of the partition plate 23 projecting into the heater duct 2 from the upper half of the opening side edge 21b on the vehicle rear side of the outlet 2. A rib-shaped auxiliary wall 18 having a substantially U-shaped cross section that bulges into the second air passage 12b is formed. The auxiliary wall 18 is formed substantially parallel to the partition wall 11 with a space therebetween, and the protruding end of the partition plate 23 is inserted between the partition wall 11 and the auxiliary wall 18.

  According to the heater duct 1 configured as described above, the wind flow that flows near the partition wall 11 in the warm air flowing through the first air passage 12a and flows along the duct side wall on the passenger compartment side (arrow C in FIG. 9). Is guided to the duct side wall on the outside of the vehicle by the guide surface 151 of the first adjusting unit 15 above the outlet 2 and is combined with the wind flow (arrow D) flowing along the duct side wall on the outside of the vehicle. The air flows into the gap between the adjusting portion 17 and the partition wall 11 and smoothly blows out from the upper half of the outlet 2 toward the center of the passenger compartment through the guide of the horizontal wall 13.

  The wind flow (arrow E in FIG. 7) flowing near the side edge of the first air passage 12a in front of the vehicle is guided by the bulging portion 16 and the lower half wall 162 thereof, and blows out while changing its direction into a gentle arc shape. Go around the upper half of mouth 2 from the front. The airflow E that has circulated is guided along the side surface 171 of the second adjusting portion 17 and is smoothly blown out from the upper half of the air outlet 2 toward the center of the passenger compartment together with the airflows C and D. The airflow B flowing through the second air passage 12b is partitioned by the partition plate 23 and the auxiliary wall 18 on the upper half side of the air outlet 2, so that the airflow B toward the hot air outlet 2 is higher. The leak prevention effect is exhibited, and the air flows reliably to the lower half side of the air outlet 2 without being mixed with the warm air of the first air passage 12a. As with the first embodiment, the wind B that has flowed to the lower half side of the blowout port 2 is guided by the inclined wall 14 and blows forward obliquely downward and toward the vehicle compartment from the lower half portion of the blowout port 2. According to this embodiment, warm air can be smoothly blown out from the blow-out port 2, and in addition to the same effect as 1st Embodiment, a blowing sound can be reduced more.

  The above-described embodiments are merely examples and do not limit the scope of the present invention. The scope of the present invention includes various modifications and changes to the above-described embodiments. In the above-described embodiment, the partition wall 11 that divides the first air passage 12a and the second air passage 12b in the vicinity of the duct front end is bulged from the duct side wall on the outside of the vehicle, and the front end surface 110 becomes the duct side wall on the vehicle interior side. Although not limited to this, for example, illustration is omitted, but the partition walls facing each other are bulged from both the side walls of the duct on the vehicle exterior side and the vehicle compartment side so that the end faces of the partition walls are joined together. It may be.

It is a principal part front view which shows the heater duct structure of the 1st Embodiment of this invention. It is sectional drawing in the position which follows the II-II line | wire of FIG. It is sectional drawing in the position which follows the III-III line | wire of FIG. It is sectional drawing in the position which follows the IV-IV line of FIG. It is sectional drawing in the position which follows the VV line of FIG. It is a schematic explanatory drawing of the state of heating the feet of a plurality of passengers seated on the rear seat by blowing warm air from the outlet of the heater duct structure of the present invention. It is a principal part front view which shows the heater duct structure of the 2nd Embodiment of this invention. It is sectional drawing in the position in alignment with the VIII-VIII line of FIG. It is sectional drawing in the position which follows the IX-IX line of FIG. It is the schematic of the vehicle compartment side surface which shows the whole conventional vehicle heater duct structure. It is a schematic explanatory drawing of the state which heats the step of the several passenger | crew of a rear seat with the warm air which blows off from the blower outlet of the conventional heater duct structure corresponding to FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Heater duct 10 Duct opening 11 Partition wall 110 Front end surface 111 One side surface 112 The other side surface 12a 1st air path 12b 2nd air path 13 Horizontal wall 14 Inclined wall 2 Outlet 21b Side edge (one side) Vertical edge)
23 Partition plate 6 Quarter trim (cabin trim)

Claims (2)

A vertically long outlet is provided at the lower end of the passenger compartment trim on the rear side of the passenger compartment, and the duct opening of the heater duct installed on the inner surface side of the passenger compartment trim is communicated with the outlet and the rear seat occupant In the heater duct structure for vehicles that blows warm air toward your feet,
In the heater duct, a partition wall that partitions the inside of the duct in the width direction is provided to form a first air passage and a second air passage,
The partition wall is formed in a substantially U-shaped bulging rib shape that bulges into the duct from one duct side wall of the heater duct, and its front end surface is joined to the other duct side wall opposite to the rib. Become
The duct opening of the heater duct is formed in a horizontal wall at the upper and lower intermediate positions by a terminal on one side surface of the partition wall, and the warm air of the first air passage is drawn from the upper half of the outlet. It is almost blown out to the center of the passenger compartment in the vehicle width direction.
In the duct opening, an inclined wall extending obliquely downward is formed below the horizontal wall by an end of the other side surface of the partition wall, and the hot air from the second air passage is blown out. A heater duct structure for a vehicle, characterized in that it is blown out from the lower half of the mouth to the side of the oblique compartment. The blowout port of the casing trim projects into the duct opening at the opening side edge of the upper half portion so as to face the partition wall and shields the first air passage side and the second air passage side. The heater duct structure for vehicles according to claim 1 provided with a partition plate .

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