Blowing structure of air conditioner

Abstract

The present invention provides a blow-out structure of an air conditioner, which can achieve good airtightness by a variable wind direction mechanism that closes a ventilation path, and can also achieve better wind directionality than before. The blow-out structure (10) of the air conditioner of the present invention has a variable wind direction mechanism (2) arranged in a housing (1), which can change the direction of the blown wind according to the rotation angle, and closes the ventilation path (5) in the housing (1) in a manner that prohibits the blowing of wind. A contact surface (S1) and a reversing surface (S2) are formed in the housing (1), the contact surface being contacted by the variable wind direction mechanism (2) in the closed state of the ventilation path (5), and the reversing surface reversing the airflow flowing upstream from the contact surface (S1) to the downstream side.

Description

Technical Field

[0001] The present invention relates to a blow-out structure of an air conditioner. Background Art

[0002] Conventionally, the following structure has been known as a blow-out structure (air outlet; register) for an air conditioner. The structure includes a housing that forms a ventilation path on the inside, and fins (wind direction variable mechanism) disposed within the housing that change the direction of the blown air according to the rotation angle and close the ventilation path in a manner that prohibits the blowing of wind (see, for example, Patent Document 1). Furthermore, in this blow-out structure, when the fins close the ventilation path in a fin-closed state, the contact area between the fins and the inner wall surface of the housing is increased to improve the airtightness achieved by the fins. Specifically, the blow-out structure is configured such that a step is formed between the common portions of the ventilation path by narrowing the ventilation path near the air outlet, and the plate surface of the fin in the fin-closed state abuts against the step surface.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-199074 Summary of the Invention

[0006] However, if steps are provided in the ventilation path near the air outlet as described above, a new problem arises in which the air flow stagnates at the steps. The air flow stagnation at the steps in the air outlet structure hinders the good air directionality achieved by the fins (wind direction variable mechanism).

[0007] An object of the present invention is to provide an air outlet structure for an air conditioner that can exhibit good airtightness due to a wind direction variable mechanism that closes a ventilation path and can also exhibit better wind directionality than before.

[0008] The blowing structure of the air-conditioning device of the present invention, which solves the above-mentioned problems, is characterized in that it comprises: an outer shell having a ventilation path on the inner side; and a wind direction variable mechanism arranged in the outer shell, which can change the direction of the blown wind according to the rotation angle, and close the ventilation path in a manner that prohibits the blowing of wind. In the outer shell, a contact surface and a flip-back surface are formed, and the contact surface extends in a direction intersecting with the extension direction of the ventilation path and in a direction away from the ventilation path, so as to be abutted by the wind direction variable mechanism in a state of closing the ventilation path, and the flip-back surface is arranged on the upstream side of the contact surface in a manner opposite to the contact surface, so that the airflow flowing back from the upstream side of the contact surface is reversed to the downstream side.

[0009] Effects of the Invention

[0010] According to the blowing structure of the present invention, it is possible to exhibit good airtightness by the wind direction variable mechanism in a state of closing the ventilation path, and to exhibit better wind directionality than before. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of an instrument panel of a vehicle in which the blowing structure according to the embodiment of the present invention is installed.

[0012] Figure 2 This is an overall perspective view of a blowing structure according to an embodiment of the present invention.

[0013] Figure 3 yes Figure 2 An exploded perspective view of the blowing structure.

[0014] Figure 4 yes Figure 2 IV-IV cross-sectional view.

[0015] Figure 5 The cross section including the first wind direction adjustment mechanism (wind direction adjustment mechanism) Figure 2 V-V cross-sectional view.

[0016] Figure 6 It is an overall perspective view of the drum-shaped fins constituting the second wind direction adjustment mechanism (other wind direction adjustment mechanism).

[0017] Figure 7 This is an explanatory diagram of the operation of the blowing structure when blowing air to the right.

[0018] Figure 8A This is a diagram illustrating the operation of the blowing structure when blowing air upward.

[0019] Figure 8B This is an explanatory diagram of the operation of the blowing structure when blowing air downward.

[0020] Figure 9A This is a schematic diagram of the airflow around the level difference space of the blown structure.

[0021] Figure 9B This is a schematic diagram of the airflow around the step space of the blowing structure of the comparative example.

[0022] Description of Reference Numerals

[0023] 1 housing

[0024] 2. 1st wind direction variable mechanism (wind direction variable mechanism)

[0025] 3. Second wind direction variable mechanism (other wind direction variable mechanism)

[0026] 5 ventilation duct

[0027] 6 The inner wall of the housing having the space portion formed therein

[0028] 10 Blowing out the structure

[0029] 11. Reversal

[0030] 12. Space Department

[0031] 13 Blowing outlet

[0032] 17 Inlet

[0033] 21 longitudinal fins

[0034] 21a Rotation axis

[0035] 30 drum fin

[0036] 39 shaft

[0037] A1 Airflow

[0038] A2 circulating airflow

[0039] D channel

[0040] R compartment

[0041] S1 contact surface

[0042] S2 flip back

[0043] V Vehicle DETAILED DESCRIPTION

[0044] Next, a mode (embodiment) of the air outlet structure of the air conditioner of the present invention will be described in detail with reference to the drawings.

[0045] The main feature of the blowing structure of this embodiment is that a contact surface is provided inside the shell, and the wind direction variable mechanism abuts against the contact surface after the ventilation path inside the shell is closed to improve the airtightness with the shell, and a flip surface is provided inside the shell, which reverses the airflow flowing upstream from the contact surface to the downstream side.

[0046] In the following description, the front, rear, left, right, up, and down directions are based on the arrow directions in the drawings that coincide with the front, rear, left, right, up, and down directions of the vehicle on which the blowing structure is mounted.

[0047] Figure 1 It is a front view of the instrument panel P of the vehicle V on which the blowing structure 10 of this embodiment is arranged.

[0048] A plurality of blowing structures 10 in this embodiment are arranged in the vehicle width direction so as to correspond to the driver's seat and the passenger seat, respectively. Hereinafter, the blowing structure 10 will be specifically described taking the one provided corresponding to the passenger seat as an example.

[0049] like Figure 1 As shown, the blowout structure 10 is attached to the instrument panel P so that the blowout port 13 faces the vehicle interior R. Specifically, the blowout port 13 is arranged on the vertical wall of the instrument panel P so as to face the passenger seated in the passenger seat (not shown).

[0050] Figure 2 It is an overall perspective view of the blowing structure 10 . Figure 3 It is an exploded perspective view of the blowing structure 10 .

[0051] like Figure 2 As shown, the blowing structure 10 has a shell 1 composed of a rectangular cylindrical body and a nozzle 13 at one end of the shell 1 ( Figure 2 The first wind direction variable mechanism 2 is housed in the housing 1. Figure 3 As shown, the blowing structure 10 also has a Figure 3 The front side of the second wind direction variable mechanism 3 is accommodated in the housing 1. In addition, the first wind direction variable mechanism 2 is equivalent to the "wind direction variable mechanism" referred to in the technical solution, and the second wind direction variable mechanism 3 is equivalent to the "other wind direction variable mechanism" referred to in the technical solution.

[0052] "shell"

[0053] like Figure 3 As shown, the housing 1 includes an upper plate member 1 a , a lower plate member 1 b , a side plate member 1 c , and a frame member 1 d .

[0054] The housing 1 is formed into the above-mentioned prismatic body by integrating these parts 1a, 1b, 1c, and 1d. In addition, a main ventilation path 5 (see FIG. 1 ) having a rectangular flow path cross section is formed inside the housing 1. Figure 4 ).

[0055] Figure 4 yes Figure 2 IV-IV cross-sectional view. In addition, Figure 4 In the figure, reference numeral D denotes a passage indicated by an imaginary line (two-dot chain line) serving as an air supply path from an air conditioner (not shown).

[0056] exist Figure 4 In the side view shown, the upper plate member 1 a and the lower plate member 1 b are symmetrical with each other across a center line C extending in the front-rear direction of the housing 1 .

[0057] Specifically, the upper plate member 1a and the lower plate member 1b are opposed to each other and are connected to a pair of side plate members 1c (see Figure 3 ) are formed between a channel connecting portion 7, a drum-shaped fin arrangement portion 8, and a longitudinal fin arrangement portion 9.

[0058] The duct connection portion 7 is connected to the duct D and forms an inlet 17 for blowing out the air (wind) in the structure 10. Inside the duct connection portion 7, the tip of the second wind direction variable mechanism 3 (drum fin 30) described later is arranged.

[0059] Furthermore, stopper surfaces 7a are formed on each of the upper plate member 1a and the lower plate member 1b at the rear of the duct connection portion 7 to limit the rotation angle of the drum fin 30. These stopper surfaces 7a, which function as rotation-restricting portions for the drum fin 30, will be described in detail later together with the drum fin 30.

[0060] The drum-shaped fin arrangement portion 8 is provided on the downstream side of the passage connection portion 7. In the drum-shaped fin arrangement portion 8, the vertical interval between the upper plate member 1a and the lower plate member 1b is wider than the vertical interval between the upper plate member 1a and the lower plate member 1b in the passage connection portion 7, so that the drum-shaped fin 30 described later can be arranged on the shaft portion 39 described later (see Figure 7 ) is the center of rotation for a specified angle.

[0061] A curved portion 8 a that curves along a rotation trajectory of a rear portion of the drum-shaped fin 30 is formed at the front portion of the drum-shaped fin arrangement portion 8 .

[0062] The downstream side of the curved portion 8a in the drum-shaped fin arrangement portion 8 has a substantially constant interval between the upper plate member 1a and the lower plate member 1b and extends to a common portion 8b of the longitudinal fin arrangement portion 9 described below.

[0063] The vertical distance between the upper plate member 1a and the lower plate member 1b in the longitudinal fin arrangement portion 9 is wider than that in the general portion 8b of the drum-shaped fin arrangement portion 8. The vertical distance between the upper plate member 1a and the lower plate member 1b in the longitudinal fin arrangement portion 9 is substantially constant in the front-rear direction.

[0064] Furthermore, the casing 1 has vertical wall surfaces 16 formed on each of the upper plate member 1 a and the lower plate member 1 b so as to connect the steps between the common portion 8 b of the drum-shaped fin arrangement portion 8 and the vertical fin arrangement portion 9 .

[0065] These vertical wall surfaces 16 are provided so as to face the vertical wall surface 15 (contact surface S1) of the frame member 1d described later, and as described in detail later, constitute the turning surface S2 of the airflow flowing back from the vertical wall surface 15 side.

[0066] Such a vertical wall surface 16 has a turned-back portion 11 that protrudes toward the downstream side on the ventilation path 5 side.

[0067] Furthermore, the vertical wall surface 16 (turned surface S2) of this embodiment is a curved surface that is concave toward the upstream side (front side). That is, the vertical wall surface 16 (turned surface S2) is concavely opposed to the vertical wall surface 15. However, as long as the vertical wall surface 16 has the turned portion 11, it can also be a flat surface extending in the vertical direction instead of a curved surface.

[0068] Inside the longitudinal fin arrangement portion 9 , the front portions of the longitudinal fins 21 constituting the first airflow direction varying mechanism 2 are arranged.

[0069] Incidentally, the vertical height of the front portion located forward of the rotation axis 21 a of the longitudinal fin 21 is wider than the vertical distance between the upper plate member 1 a and the lower plate member 1 b in the common portion 8 b of the drum-shaped fin arrangement portion 8 .

[0070] Bearings 9a for the rotating shaft 21a are formed at the rear of the upper plate member 1a and the rear of the lower plate member 1b in the longitudinal fin arrangement section 9. Furthermore, the front of the frame member 1d, described below, is connected to the rear of the upper plate member 1a, the lower plate member 1b, and the side plate member 1c that form the longitudinal fin arrangement section 9.

[0071] like Figure 3 As shown, the frame member 1d is formed of a frame body having a rectangular opening.

[0072] In addition, if Figure 4 As shown, the frame member 1d is arranged on the most downstream side of the casing 1 on the vehicle interior side, and forms an air outlet 13 for air blown from an air conditioner (not shown).

[0073] That is, the main ventilation path 5 for the wind blowing from the inlet 17 toward the outlet 13 is formed inside the casing 1 .

[0074] This frame member 1d has an airflow guide portion 14 on its inner side.

[0075] As will be described in detail later, the airflow guide portion 14 is configured to guide the airflow, which changes in the main ventilation passage 5 according to the rotation angle of the drum fin 30 , in a predetermined direction.

[0076] like Figure 4 As shown, the airflow guide 14 is composed of a general portion 14a having a substantially constant vertical interval along the front-rear direction, and an inclined portion 14b connected to the rear side of the general portion 14a and inclined so that the vertical interval gradually narrows toward the rear.

[0077] The vertical distance inside the frame member 1 d in the common portion 14 a is set to be substantially equal to the vertical distance between the upper plate member 1 a and the lower plate member 1 b in the common portion 8 b of the drum-shaped fin arrangement portion 8 .

[0078] Inside the common portion 14 a , rear portions of the longitudinal fins 21 are arranged so as to be positioned rearward of the rotational shafts 21 a of the longitudinal fins 21 .

[0079] The upper and lower vertical wall surfaces 15 formed at the front end of the frame member 1d as a step between the inner side of the frame member 1d and the vertical fin arrangement portion 9 in the common portion 14a serve as contact surfaces S1 for the vertical fins 21 in the fin closed state described later.

[0080] A space 12 is formed between the vertical wall surface 15 (contact surface S1) and the vertical wall surface 16 (return surface S2) in the housing 1. That is, the space 12 forms a step space outside the ventilation path 5.

[0081] 《1st wind direction variable mechanism》

[0082] like Figure 3 As shown, the first airflow direction variable mechanism 2 mainly includes a plurality of longitudinal fins 21 , a connecting member 22 , and an operating portion 23 .

[0083] The longitudinal fins 21 are formed of plates and are arranged in the vehicle width direction (left-right direction) so that the plate surfaces are parallel to each other.

[0084] The longitudinal fins 21 are supported by the bearings 9a (see Figure 4 )'s rotating shaft 21a, and a connecting pin 21b supported by a connecting member 22.

[0085] The rotation shaft 21a protrudes in the vertical direction from the upper edge and the lower edge of the longitudinal fin 21. The connecting pin 21b protrudes upward from the upper edge of the longitudinal fin 21 on the upstream side of the rotation shaft 21a.

[0086] Furthermore, one longitudinal fin 21d positioned approximately midway in the left-right direction among the plurality of longitudinal fins 21 includes an engagement pin 21c that engages with an operation portion 23 described later. The engagement pin 21c extends in the vertical direction downstream of the rotation shaft 21a.

[0087] like Figure 3 As shown, the connecting member 22 has a plurality of holes 22a arranged at predetermined intervals along its longitudinal direction. Connecting pins 21b for each of the plurality of longitudinal fins 21 are rotatably inserted into these holes 22a, maintaining the plurality of longitudinal fins 21 in a parallel state. Thus, the plurality of longitudinal fins 21 are integrally connected via the connecting member 22.

[0088] like Figure 4 As shown, such a connecting member 22 is arranged in the space portion 12 formed between the vertical wall surface 15 (contact surface S1) and the vertical wall surface 16 (returned surface S2).

[0089] Furthermore, the connecting member 22 constitutes a rotation mechanism for rotating the longitudinal fins 21 .

[0090] like Figure 3 As shown, the operation portion 23 includes a grip portion 23a for a user, a forked portion 23b protruding forward from the grip portion 23a, and a guide rod 23c that supports the grip portion 23a so as to be slidable in the left-right direction.

[0091] Figure 5 The cross section including the first wind direction adjustment mechanism 2 Figure 2 V-V cross-sectional view.

[0092] like Figure 5 As shown, both ends of the guide rod 23c supporting the gripping portion 23a are supported by the frame member 1d. Between the forked portions 23b of the operating portion 23, the engaging pin 21c of the longitudinal fin 21 is fitted so as to be movable in the front-rear direction.

[0093] In the first airflow direction variable mechanism 2, when the user slides the grip 23a of the operating portion 23 in the left-right direction, the engaging pin 21c of the longitudinal fin 21d moves in the front-back direction between the forked portions 23b, while rotating the longitudinal fin 21d around the rotation axis 21a.

[0094] At this time, the other longitudinal fins 21 connected by the connecting member 22 via the connecting pin 21b of the longitudinal fin 21d rotate in conjunction with the longitudinal fin 21d around the respective rotation axes 21a. As a result, the longitudinal fins 21 (including the longitudinal fin 21d) change the direction of the air blown out from the air outlet 13 according to the rotation angle.

[0095] In addition, as in Figure 5 As shown by the dotted lines in the figure, the rotated longitudinal fins 21 (including the longitudinal fins 21 d ) overlap with each other, and the air outlet 13 is closed.

[0096] This fin closed state corresponds to the "state in which the ventilation path is closed" referred to in the technical proposal.

[0097] In addition, if Figure 5 As shown, a stopper surface 16 is formed on the inner side of the frame member 1d, which serves as a rotation preventing portion for maintaining the rotation angle of the longitudinal fin 21 after the fin is in the closed state.

[0098] In addition, as in Figure 5 As shown by the dotted lines in the middle, the longitudinal fins 21 in the fin closed state abut against the upper and lower longitudinal wall surfaces 15 (abutment surfaces S1) of the frame member 1d.

[0099] Second wind direction variable mechanism

[0100] Next, the second wind direction variable mechanism 3 (see Figure 3).

[0101] like Figure 3 As shown, the second airflow direction variable mechanism 3 is arranged on the upstream side (front side) of the first airflow direction variable mechanism 2 .

[0102] The second airflow direction varying mechanism 3 mainly includes a drum-shaped fin 30 and a link mechanism 31 for rotating the drum-shaped fin 30 .

[0103] Figure 6 It is an overall perspective view of the drum-shaped fin 30 .

[0104] like Figure 6 As shown, the drum fin 30 is a component that is long in the vehicle width direction (left-right direction), and has a cylindrical drum fin body 32 with openings at the front and rear, and an intermediate fin 33 composed of a flat-plate-shaped transverse fin that divides the inner side of the drum fin body 32 into upper and lower parts.

[0105] The drum-shaped fin body 32 includes upper fins 36 and lower fins 37 , each consisting of a flat plate-shaped lateral fin, and end plates 38 .

[0106] The upper fin 36 and the lower fin 37 are formed of plates that are rectangular in plan view and long in the left-right direction. The upper fin 36 and the lower fin 37 are configured so that their front-to-back lengths are substantially the same.

[0107] return Figure 4 The interval between the upper fin 36 and the lower fin 37 gradually narrows from the upstream side to the downstream side. That is, the opening cross-sectional area on the rear side (downstream side) of the drum-shaped fin body 32 is slightly smaller than the opening cross-sectional area on the front side (upstream side).

[0108] like Figure 6 As shown, the intermediate fin 33 is formed of a plate body having a rectangular planar shape that is long in the left-right direction. In addition, the intermediate fin 33 is longer in front-to-back length than the upper fin 36 (or the lower fin 37).

[0109] Furthermore, the intermediate fins 33 are arranged between the upper fins 36 and the lower fins 37 , and are integrally connected to the upper fins 36 and the lower fins 37 via a pair of left and right end plates 38 .

[0110] exist Figure 4 As shown in the top view, the rear edge of the end plate 38 is inclined so as to approach the rear end of the intermediate fin 33 as it moves backward from the rear end side of the upper fin 36, and is inclined so as to approach the rear end of the intermediate fin 33 as it moves backward from the rear end side of the lower fin 37.

[0111] like Figure 6 As shown, such an end plate 38 is provided with a shaft portion 39 .

[0112] The shaft portion 39 is formed so as to protrude in the left-right direction from the end plate 38 at a position corresponding to the center portion of the intermediate fin 33 in the front-rear direction.

[0113] also, Figure 6 In FIG. 1 , for the convenience of drawing, description of the shaft portion 39 of the right end plate 38 among the shaft portions 39 provided on the pair of end plates 38 is omitted.

[0114] and, Figure 6 The drum-shaped fin 30 shown is arranged in the drum-shaped fin arrangement portion 8 (see Figure 4 ) is rotatably supported on the housing 1 via the shaft 39 (see Figure 3 ) of the side panel member 1c (see Figure 3 ).

[0115] Next, the link mechanism 31 (see Figure 3 ).

[0116] like Figure 3 As shown, the link mechanism 31 includes a plate-shaped rod member 34 that is long in one direction and an arm member 35 .

[0117] At the rear of the rod member 34, a shaft support portion 34a and a gripping portion 34b are formed relative to the frame member 1d. Figure 2 As shown, the grip portion 34b protrudes toward the vehicle interior side through a small hole formed in the frame member 1d.

[0118] Furthermore, a long hole 34 c is formed in the front portion of the lever member 34 .

[0119] like Figure 3 As shown, a pin portion 35a is formed at the rear portion of the arm member 35 to be inserted into the long hole 34c of the rod member 34. Furthermore, a hole portion 35b is formed at the front portion of the arm member 35 for securing the shaft portion (not shown) of the end plate 38 provided on the right side of the drum fin 30, for example, by press-fitting.

[0120] According to the link mechanism 31 , the user moves the grip portion 34 b up and down to rotate the drum fin 30 about the shaft portion 39 via the lever member 34 and the arm member 35 .

[0121] The Action of Blowing Out a Construct

[0122] Next, the operation of the blowing structure 10 according to this embodiment will be described.

[0123] Figure 7 It is an explanatory diagram of the operation of the blowing structure 10 when blowing air to the right.

[0124] like Figure 7As shown, when the wind W is blown rightward from the outlet 13 of the blowing structure 10, the longitudinal fin 21 is tilted so that the rotating end on the downstream side of the longitudinal fin 21 is away from the inner wall surface of the left side plate member 1c. Figure 2 The grip portion 23a of the operation portion 23 is shown slid toward the right.

[0125] at this time, Figure 7 The forked portion 23b of the operating portion 23 shown in the figure moves the engagement pin 21c of the longitudinal fin 21d toward the right. This causes the longitudinal fin 21d to rotate counterclockwise about the rotation axis 21a. Furthermore, the other longitudinal fins 21 connected to the longitudinal fin 21d by the connecting member 22 via the connecting pin 21b of the longitudinal fin 21d rotate counterclockwise about the respective rotation axes 21a in conjunction with the longitudinal fin 21d.

[0126] Thereby, the longitudinal fin 21 is inclined so that the rotating end located on the downstream side is separated from the inner wall surface of the left side plate member 1c.

[0127] like Figure 7 As shown, the blowing structure 10 blows the wind W diagonally to the right from the blowing outlet 13 toward the vehicle interior R.

[0128] Figure 8A It is an explanatory diagram of the operation of the blowing structure 10 when blowing air upward. Figure 8B It is an explanatory diagram of the operation of the blowing structure 10 when blowing air downward.

[0129] like Figure 8A As shown, when the wind W is blown upward from the outlet 13 of the blow-out structure 10, the intermediate fin 33 of the drum-shaped fin 30 is tilted so that the downstream side thereof moves away from the center line C of the housing 1 downward. Figure 2 The grip portion 34b of the illustrated lever member 34 slides upward from the neutral position.

[0130] at this time, Figure 3 In the link mechanism 31 shown, the long hole 34c side of the rod member 34 moves downward. The arm member 35 connected to the rod member 34 rotates the drum fin 30 around the shaft 39 so that the intermediate fin 33 faces downward. Figure 8A The intermediate fin 33 shown is in contact with the upper stopper surface 7a of the pair of stopper surfaces 7a serving as the rotation preventing portion.

[0131] Thus, the drum-shaped fins 30 direct the wind W diagonally downward relative to the housing inner wall 6 having the space 12 below, i.e., the inner wall surface of the lower plate member 1b. The wind W then blows rearward along the inner wall surface of the lower plate member 1b and flows into the airflow guide 14 of the frame member 1d. Specifically, the wind W blows along the lower inner wall surface of the common portion 14a of the frame member 1d, with the wind direction being diagonally upward, shifted by the lower inclined portion 14b of the frame member 1d.

[0132] like Figure 8A As shown, the blowing structure 10 blows the wind W obliquely upward from the blowing outlet 13 to the vehicle interior R (see FIG. Figure 1 )Side air supply.

[0133] like Figure 8B As shown, when the wind W is blown downward from the outlet 13 of the blow-out structure 10, the intermediate fin 33 of the drum-shaped fin 30 is tilted so that the downstream side thereof is away from the center line C of the housing 1 upward. Figure 2 The grip portion 34b of the illustrated lever member 34 slides downward from the neutral position.

[0134] at this time, Figure 3 In the link mechanism 31 shown, the long hole 34c side of the rod member 34 moves upward. The arm member 35 connected to the rod member 34 rotates the drum fin 30 around the shaft 39 so that the intermediate fin 33 faces upward. Figure 8B In the illustrated intermediate fin 33, the front end thereof abuts against the lower stopper surface 7a of the pair of stopper surfaces 7a serving as the rotation preventing portion.

[0135] The drum-shaped fins 30 thus direct the wind W diagonally upward relative to the inner wall 6 of the housing having the space 12, i.e., the inner wall surface of the upper plate member 1a. The wind W then blows rearward along the inner wall surface of the upper plate member 1a and flows into the airflow guide 14 of the frame member 1d. Specifically, the wind W blows along the upper inner wall surface of the regular portion 14a of the frame member 1d, and the wind direction is changed diagonally downward by the inclined portion 14b on the upper side of the frame member 1d.

[0136] like Figure 8B As shown, the blowing structure 10 blows the wind W obliquely downward from the blowing outlet 13 to the vehicle interior R (see FIG. Figure 1 )Side air supply.

[0137] Although not shown in the figure, when the wind W is blown straight from the outlet 13 of the blowing structure 10 to the rear, the middle fin 33 of the drum fin 30 is arranged along the center line C of the housing 1. Figure 2 The grip portion 34b of the illustrated lever member 34 is set in a neutral position.

[0138] Thus, the blowing structure 10 blows the wind W straightly backward from the blowing outlet 13 to the vehicle interior R (see FIG. Figure 1 )Side air supply.

[0139] Effects

[0140] Next, the effects achieved by the blowing structure 10 of this embodiment will be described.

[0141] Figure 9A Schematic diagram of airflows A1 and A2 blowing out of the periphery of the space portion 12 (step difference space) of the structure 10 . Figure 9B Schematic diagram of the airflow A1 and the circulating airflow A2 around the space portion 12 (step difference space) of the air outlet structure 10a of the comparative example.

[0142] Here, first, a comparative example of the blowing structure 10a (see Figure 9B ).

[0143] like Figure 9B As shown, in the blowing structure 10a, the vertical wall surface 15 and the vertical wall surface 16 facing each other in the front-back direction with the space portion 12 (step difference space) interposed therebetween are composed of flat surfaces parallel to each other.

[0144] In this blowing structure 10a, airflow A1 flowing from upstream to downstream within the ventilation path 5 forms a circulating airflow A2 within the space 12. Specifically, the circulating airflow A2 follows airflow A1 from upstream to downstream near the boundary between the ventilation path 5 and the space 12, but a portion of the circulating airflow A2 reverses at the vertical wall 15 and flows back toward the vertical wall 16. Then, a portion of the reversed airflow is returned by the vertical wall 16 and flows again from upstream to downstream, circulating within the space 12.

[0145] On the other hand, the remaining part of the counterflow airflow collides with the vertical wall surface 16 and then merges with the ventilation passage 5 again.

[0146] By this confluence, the airflow A1 flowing from the upstream side to the downstream side in the ventilation path 5 is formed on the housing inner wall 6 side having the space portion 12. Figure 9B In FIG, the flow indicated by the dotted line rises in a direction away from the space portion 12 and becomes a displaced flow indicated by the solid line.

[0147] Therefore, the airflow A1 indicated by the solid line is not sufficiently controlled in the direction by the airflow guide 14 by the frame member 1d, and the wind W (see Figure 9A as well as Figure 9B ) has low directivity.

[0148] In contrast, in the blowing structure 10 of this embodiment, as shown in FIG. Figure 9AAs shown, vertical wall surface 16 serves as a reversal surface S2 that actively reverses the airflow flowing back from vertical wall surface 15. This prevents the circulating airflow A2 from merging with airflow A1 in ventilation path 5. This effectively controls the wind direction of airflow A1 in airflow guide 14.

[0149] According to this blowing structure 10, by configuring the vertical wall surface 15 as the contact surface S1 of the vertical fins 21 in the fin-closed state, good airtightness can be achieved. In addition, according to this blowing structure 10, by configuring the vertical wall surface 16 opposite the vertical wall surface 15 as the reversing surface S2, the airflow A1 of the airflow guide 14 is effectively controlled, and the directionality of the wind W can be improved compared to the conventional method.

[0150] Furthermore, in the blowing structure 10 of the present embodiment, the reversing surface S2 has the reversing portion 11 that protrudes toward the downstream side on the ventilation passage 5 side.

[0151] According to such a blow-out structure 10, the confluence of the circulating airflow A2 with the airflow A1 in the ventilation passage 5 is more effectively suppressed. The wind W of the blow-out structure 10 has a higher directivity.

[0152] Furthermore, the reversing surface S2 of the blowing structure 10 of the present embodiment is configured to have a curved surface that is recessed toward the upstream side.

[0153] According to such a blow-out structure 10, the confluence of the circulating airflow A2 with the airflow A1 in the ventilation passage 5 is further effectively suppressed. The directivity of the wind W from the blow-out structure 10 is further enhanced.

[0154] Furthermore, in the blowing structure 10 of the present embodiment, the connecting member 22 constituting a rotating mechanism for rotating the longitudinal fins 21 is disposed in the space 12 formed between the contact surface S1 and the reversing surface S2 .

[0155] According to such a blowing structure 10, unlike a structure in which a rotating mechanism such as the connecting member 22 is arranged in a chamber separated from the ventilation path 5 by a predetermined partition wall in the housing 1, the space 12 is effectively utilized, thereby achieving a compact blowing structure 10.

[0156] Furthermore, the blowing structure 10 of the present embodiment further includes a second wind direction variable mechanism 3 (another wind direction variable mechanism) disposed in the casing 1 upstream of the first wind direction variable mechanism 2 (wind direction variable mechanism).

[0157] According to this blowing structure 10, the direction of the wind W blown out through the blowing port 13 can be changed to a direction different from that of the first wind direction variable mechanism 2 by the second wind direction variable mechanism 3, and the air supply direction can be controlled along the side of the housing inner wall 6 having the space portion 12 (contact portion S1) within the ventilation path 5. The blowing structure 10 can set the directionality of the wind W to be high and expand the range of choices for the blowing direction of the wind W.

[0158] As mentioned above, although this embodiment was described, this invention is not limited to the said embodiment, It can be implemented in various forms.

Claims

1. A blowing structure of an air conditioner, characterized in that: have: A housing having ventilation passages on an inner side; and The wind direction variable mechanism is arranged in the housing, and the wind direction variable mechanism can change the direction of the blown wind according to the rotation angle, and close the ventilation path in a manner that prohibits the blowing of wind. An abutting surface and a turning back surface are formed in the shell. The abutment surface is formed to extend in a direction intersecting the extending direction of the ventilation path and in a direction away from the ventilation path so as to abut against the variable airflow direction mechanism in a state where the ventilation path is closed. The turning surface is provided on the upstream side of the abutting surface in a manner opposite to the abutting surface, so that the airflow flowing back from the abutting surface to the upstream side is reversed to the downstream side. The turning surface is configured to have a curved surface that is concave toward the upstream side.

2. The air outlet structure of the air conditioner according to claim 1, wherein: The turned-back surface includes a turned-back portion protruding toward the downstream side on the ventilation path side.

3. The blow-out structure of the air conditioner according to claim 1, wherein: The rotation mechanism of the airflow direction variable mechanism is arranged in a space formed between the contact surface and the reversing surface.

4. The air outlet structure of the air conditioner according to claim 1, wherein: Another wind direction variable mechanism is further provided in the casing on the upstream side of the wind direction variable mechanism.

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