JP3799141B2 - Air outlet structure for vehicles - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air outlet structure of an air conditioner installed in an automobile, and more particularly to a vehicle air outlet that can adjust a blowing amount and open / close an air outlet with a single dial. It relates to the outlet structure.
[0002]
[Prior art]
As a conventional example of an air outlet structure for supplying air generated by driving an air conditioner installed in an automobile into a passenger compartment, there is an air outlet structure disclosed in Japanese Utility Model Publication No. 52-35648, for example. . As shown in FIGS. 5 and 6, this air outlet structure has a structure in which a cylindrical outlet grill 2 is rotated around a pin 3 in the grill base 1, and the outlet described above is used. By appropriately rotating the grill 2, the opening 1a provided in the grill base 1 can be completely closed, and by rotating the outlet grill 2 from the fully closed position by about 90 degrees, the opening 1a opens and ventilation to the direction of a vehicle interior is attained. In other words, the opening 1a provided in the grill base 1 can be opened and closed by rotating the outread grill 2, and the outlet grill 2 is completely closed from the position where the opening 1a is completely opened. The amount of air blown into the passenger compartment can be adjusted up to the position where the air blow is performed, and when air blow is not required, the appearance of the air outlet can be enhanced by completely closing the opening 1a by the outlet grill 2. It has a structure that can be done. In addition, 4 is a vertical fin pivotally supported in the outlet grill, and 5 is a horizontal fin.
[0003]
[Problems to be solved by the invention]
However, in such a conventional air outlet structure, if the outlet grill 2 is half blocked in order to reduce the air volume of the air blown from the opening 1a to about 1/2 of the maximum supply amount, for example, The wind direction is determined by the rotation direction of the outlet grill 2, and there is a problem in that it is impossible to adjust the wind direction to a desired position particularly when adjusting the air volume.
[0004]
Also, when the direction of the outlet grill 2 is changed so that the amount of air blown from the opening 1a is reduced, the air passing between the lip of the opening 1a and the outer peripheral surface of the outlet grill 2 The distribution resistance increases, and this causes abnormal noise.
[0005]
Further, since the turning operation of the outlet grill 2 is to directly touch the outlet grill 2 to rotate the outlet grill 2, the outlet grill 2 and the opening 1a are turned during the turning operation of the outlet grill 2. The operator's finger may be caught between the two.
[0006]
The present invention has been made paying attention to such conventional drawbacks, and is equipped with a damper for adjusting the amount of air flow and a louver for adjusting the direction of air inside the air outlet case connected to the air duct of the vehicle. The louver housing can be pivotally supported, and the above-described damper and the louver housing can be provided with one dial that can be rotated, and the air volume and direction can be adjusted by operating the one dial. The first object is to improve the workability for adjusting the air volume and the wind direction.
[0007]
In the present invention, when the air outlet is closed by the louver housing, the air passage between the air outlet and the louver housing is maintained between the air outlet and the louver housing so that the air passage is closed by the damper. The second purpose is to prevent the occurrence.
[0008]
[Means for Solving the Problems]
In order to achieve the first and second objects, in claim 1, a blower case having an air outlet connected to a finisher having an air outlet and an inlet connected to an air duct is provided. In the vicinity of the inlet in the case, a damper for adjusting the air volume by opening and closing the air passage inside the air outlet case is pivotally supported, and closer to the air outlet in the air outlet case than the damper, A cylindrical louver housing having a side wall surface that can substantially fully block the air outlet is pivotally supported, and the damper can be rotated from a fully open position to a fully closed position of the blower case, and Air outlet opening / closing control that allows the louver housing to be rotated to a position where the side wall surface of the damper closes the air outlet after the damper is fully closed. It is characterized in that an air outlet structure for a vehicle provided with a structure.
[0009]
According to a second aspect of the present invention, in addition to the first aspect, the blower opening / closing control mechanism includes a single dial pivotally supported on the outer side of the blower case, and the dial includes a shaft hole of a damper. A guide pin projecting on the arm to be locked is loosely fitted, and a second groove for rotating the damper within the range from the fully open position to the fully closed position in conjunction with the rotation of the dial The rotation of the dial that continues after the damper reaches the fully closed position meshes with the pinion engaged with the support shaft of the louver housing, and the side wall of the louver housing A rack for rotating to a closing position, and a first groove portion for releasing the engagement between the guide pin protruding from the arm and the second groove portion after the damper reaches the fully closed position are provided. The air outlet structure for vehicles It is characterized in that.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below in detail with reference to FIGS. First, components constituting the air outlet structure of the present invention will be described with reference to FIG. 1. Reference numeral 11 denotes a cylindrical air outlet case connected to an air duct of an in-vehicle air conditioner (not shown). 11 is an inlet 12A that is open in both the front and rear directions and whose rear opening is connected to the air duct, and the front opening is a semi-cylindrical air outlet 12, which is the air outlet 12. The finisher 14 having the air outlet 13 is attached by the locking action of the locking piece 15 provided on the finisher 14 and the locking piece 16 provided on the blower port case 11. It has a configuration.
[0011]
In the vicinity of the rear opening inside the air blowing case 11, a damper 17 for opening and closing the ventilation path inside the air blowing case 11 and performing air volume control is pivotally supported. A frame-shaped seal piece 18 for enhancing airtightness with the inner surface of the blower port case 11 is adhered and held on the periphery of the damper 17. Further, the damper 17 is engaged with a square shaft 20 provided at one end of an arm 19 positioned outside the air blowing case 11 through a through hole 11A formed in the air blowing case 11. A guide pin 21 protrudes from the other end of the arm 19.
[0012]
Reference numeral 22 denotes a dial having a shaft hole 24 that is rotatably supported by a support shaft 23 formed on the outer surface of the finisher 14, and the guide pin 21 is idle on the dial 22. A guide groove 25 to be fitted is formed, and the guide groove 25 is formed in a circular arc-shaped first groove portion 25A centering on the shaft hole 24 and from one end of the first groove portion 25A toward the shaft hole 24. And a second groove 25B extending to the end.
[0013]
An arc-shaped rack 26 is formed on the side surface of the dial 22 along an arc surface centered on the shaft hole 24 (see FIGS. 1A and 1B). 26 is meshed with a pinion 27. A round shaft 27A projects from one side of the pinion 27, a square shaft hole 28 is bored at the center thereof, and a projection 29 projects from the outer peripheral surface of the pinion 27.
[0014]
Reference numeral 30 denotes a louver housing that is fitted in a position near the air outlet 12 in the blower case 11, and this louver housing 30 is formed in a substantially cylindrical shape by upper and lower wall surfaces 30A and 30B and left and right side wall surfaces 30C and 30D. The upper wall surface 30 </ b> A has an area that can substantially close the air outlet 13, and has a curved surface that is substantially the same as the curved surface of the finisher 14. In addition, a plurality of horizontal fins 31 and vertical fins 32 are pivotally supported inside the louver housing 30 via shaft holes 33 formed in the louver housing 30. The horizontal fins 31 are connected to each other via a link 34, the vertical fins 32 are connected to each other via a link 35, and one horizontal fin 31 located at the center has a tip engaging claw 36A. The operation knob 36 is attached so as to engage with the vertical fin 32, and each vertical fin 32 or each horizontal fin 31 can be turned by moving the operation knob 36 in the horizontal direction or the vertical direction. .
[0015]
Further, of the left and right side wall surfaces 30C and 30D of the louver housing 30, one side wall surface 30C on the pinion 27 side is provided with an angular shaft 37 that fits into the angular shaft hole 28 of the pinion 27 (FIG. 1 ( A)), and a round shaft 37A is projected on the other side wall surface 30D opposite to that (see FIG. 1D). Thus, on the side wall surface 30C side of the louver housing 30, the round shaft 27A of the pinion 27 is provided in the blower port case 11 by fitting the square shaft 37 into the square shaft hole 28 of the pinion 27. One of the left and right shaft grooves 39, 39 is rotatably fitted and supported, and the other side wall surface 30D side of the louver housing 30 has its round shaft 37A on the left and right shaft grooves 39 provided in the air blowing case 11. The other of 39 is rotatably fitted and supported. In addition, protrusions 38 are provided on the left and right side surfaces of the louver housing 30, and the protrusions 38 are fitted into arc-shaped grooves 40 formed on the inner side surfaces of the left and right side walls of the air blowing case 11. Yes. As shown in FIG. 1 (E), a mountain-shaped protrusion 41 is provided at the groove bottoms at both ends of both the left and right arc-shaped grooves 40, and the spherical tip of the protrusion 38 guided in the arc-shaped groove 40. The louver housing 30 is positioned so as not to be loose inside the blower port case 11 when the 38A gets over the protrusion 41 and is positioned at the end of the arc-shaped groove 40. Note that the stopper 42 protruding from the outer surface of the blower case 11 regulates the rotational position of the dial 22 (see FIG. 2C).
[0016]
The above is the member configuration of the present embodiment. Next, the assembly will be described. First, a damper 17 to which a seal piece 18 is attached is pivotally supported inside the blower case 11. In the louver housing 30, a plurality of horizontal fins 31 and vertical fins 32 connected by links 34 and 35 are axially supported in the shaft hole 33, and then the louver housing 30 is connected to the air outlet 12 of the air outlet case 11. It is assembled in the air outlet case 11 from the side. At this time, the angular shaft 37 and the round shaft 37A projecting from the side surface of the louver housing 30 are fitted into the shaft groove 39 of the air outlet case 11, and at the same time, the projection 38 projecting from the side surface of the louver housing 30 is provided. It fits in the arc-shaped groove 40 formed on the inner side surface of the blower case 11.
[0017]
Next, a finisher 14 is put on the air outlet 12 of the blower case 11, and the finisher 14 is attached to the blower case 11 with the locking pieces 15 and the locking claws 16, and then the blower case 11 is placed. The square shaft hole 28 of the pinion 27 is engaged with the square shaft 37 protruding laterally from the shaft groove 39.
[0018]
Next, while the shaft hole 24 provided in the dial 22 is fitted and supported on the support shaft 23 protruding from the side surface of the finisher 14, the above-described pinion 27 is placed on the rack 26 provided in the dial 22. Let me. Thereafter, the square shaft 20 provided at one end of the arm 19 is fitted into the shaft hole 17A of the damper 17, and the guide pin 21 provided at the other end of the arm 19 is inserted into the guide groove 25 of the dial 22. The desired air outlet is constructed by loosely fitting it.
[0019]
Next, the operation of the air outlet will be described. As shown in FIG. 2, the direction of the louver housing 30 when the damper 17 is in the fully open position is set in advance so that the air passage axis of the louver housing 30 coincides with the air passage axis of the air outlet case 11. Further, the dial 22 at this time is in contact with the stopper 42, and the guide pin 21 protruding from the arm 19 that is rotationally coupled to the damper 17 is a second pin formed on the dial 22. The groove portion 25B is positioned closer to the first groove portion 25A.
[0020]
If an air conditioner (not shown) is driven in this state, air sent from the air conditioner through an air duct (not shown) passes through the air outlet case 11 and the air outlet 13 of the finisher 14 to the vehicle interior. Be blown. Therefore, when it is desired to stop the blowing by operating the damper 17, the protruding portion of the dial 22 partially protruding from the long hole 14A on the front surface of the finisher 14 is rotated in the arrow direction (A) in FIG. Then, following the rotation of the dial 22, the arm 19 rotates in the clockwise direction indicated by the arrow (B) in FIG. 2C via the guide pin 21 engaged with the guide groove 25. . Following the rotation of the arm 19 in the clockwise direction, the damper 17 also rotates in the air outlet case 11, and as a result, the inside of the air outlet case 11 is closed by the damper 17 and the air supply into the vehicle compartment is interrupted. (See FIG. 3).
[0021]
Thus, when the dial 22 is further rotated in the direction A from the time when the air outlet case 11 is closed by the damper 17, the protrusion 29 provided on the pinion 27 comes into contact with the end surface 26 </ b> A of the rack 26. Thereafter, the rack 26 and the pinion 27 are engaged with each other. When the dial 22 continues to rotate in the A direction, the louver housing 30 rotates in the direction of the arrow (C) in FIG. 3C due to the engagement of the rack 26 and the pinion 27, and the louver housing 30 is approximately 90. The air outlet 13 is completely closed by the upper wall surface 30A of the louver housing 30 (see FIG. 4). When the dial 22 is rotated when attempting to rotate the louver housing 30, the guide pin 21 provided on the arm 19 enters the first groove portion 25 </ b> A provided on the dial 22. Even if is not operated, the rotation of the dial 22 can be continued.
[0022]
In the present embodiment, as described above, the air outlet 13 provided in the finisher 14 can be completely closed after the air passage in the blower port case 11 is completely closed by the rotation of the damper 17. By operating the dial to return to the opposite direction from that state, the air outlet 13 is completely opened, so if the angle of the damper 17 is set to a desired angle by the dial 22, the air sent from an air duct (not shown) Can be blown into the passenger compartment with a desired air volume.
[0023]
【The invention's effect】
As described above, according to the air outlet structure for a vehicle of the present invention, the damper 19 and the louver housing 30 can be operated by operating one dial 22, and thus, with one dial 22. Since the air flow into the passenger compartment can be adjusted and the air outlet 13 can be closed when not in use, the operability is excellent.
[0024]
In the present invention, the air outlet 13 cannot be closed unless the air passage in the air outlet case 11 is completely closed by the rotation of the damper 19, and it is not after the air outlet 13 is completely opened. Since the air passage cannot be opened, air is blown from the gap between the louver housing 30 and the air outlet 13 during the closing or opening of the air outlet 13 due to the operation of the louver housing 30. Leakage does not occur, so that it is possible to prevent the occurrence of abnormal noise due to airflow leakage.
[0025]
Further, when the air outlet 13 is closed by the louver housing 30, the upper wall surface 30A of the louver housing 30 is flush with the surface of the finisher 14, so that no step is generated, so that the appearance of the air outlet is improved.
[0026]
Further, in the present invention, the operation for rotating the damper 17 and the louver housing 30 can be performed by a simple operation of rotating the dial 22 partially protruding from the front side of the air outlet. Therefore, the air volume adjustment work and the air blowout opening / closing work can be easily performed, and a finger is not sandwiched between the air blowout opening 13 and the louver housing as in the prior art.
[Brief description of the drawings]
1A is an exploded perspective view of an air outlet structure according to the present invention, FIG. 1B is a perspective view showing an opposite surface of a dial, and FIG. 1C is a perspective view showing another side surface of a pinion in FIG. FIG. 4D is a perspective view of the louver housing in the direction of arrow D in FIG.
2A is a front view of an air outlet structure according to the present invention, FIG. 2B is a side sectional view thereof, and FIG. 2C is a right side view thereof.
3A is a front view of the air outlet structure according to the present invention when the damper is closed, FIG. 3B is a side sectional view thereof, and FIG. 3C is a right side view thereof.
4A is a front view of the air blower outlet damper according to the present invention when the air blower is closed, FIG. 4B is a side sectional view thereof, and FIG. 4C is a right side view thereof.
FIG. 5 is a front view showing a conventional air outlet.
6 is a cross-sectional view of the main part of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 ... Air outlet case 11A ... Through-hole 12 ... Exhaust port 13 ... Air blower outlet 14 ... Finisher 14A ... Long hole 15 ... Locking piece 16 ... Locking piece 17 ... Damper 18 ... Sealing piece 19 ... Arm 20 ... Square shaft 21 ... guide pin 22 ... dial 23 ... support shaft 24 ... shaft hole 25 ... guide groove 26 ... rack 26A ... end face 27 ... pinion 27A ... round shaft 28 ... square shaft hole 29 ... protrusion 30 ... louver housings 30A, 30B ... upper and lower wall surfaces 30C , 30D ... left and right side wall surface 31 ... horizontal fin 32 ... vertical fin 33 ... shaft hole 34 ... link 35 ... link 36 ... operation knob 36A ... engagement link 37 ... square shaft 37A ... round shaft 38 ... projection 38A ... spherical tip 39 ... Shaft groove 40 ... Arc-shaped groove 41 ... Projection 42 ... Stopper

Claims (2)

An air inlet case (11) having an air outlet (12) connected to a finisher (14) having an air outlet (13) and an inlet (12A) connected to an air duct, and the introduction in the case A damper (17) for adjusting the air volume by opening and closing the air passage inside the air outlet case (11) is pivotally supported near the mouth (12A), and the air outlet case ( 11) A cylindrical louver housing (30) having a side wall surface (30A) that can substantially completely block the air outlet (13) is pivotally supported near the air outlet (12) in the interior, and further, the damper (17) can be rotated from the fully open position to the fully closed position of the air outlet case (11), and the louver housing (3) continues after the damper (17) is in the fully closed position. ) And the air outlet structure for a vehicle in which the side wall surface (30A) is characterized in that a blow-out opening and closing control mechanism capable of and which can be rotated to a position for closing the air outlet (13). The air outlet opening / closing control mechanism includes one dial (22) pivotally supported on the outside of the air blowing case (11), and the dial (22) has a shaft hole (17A) of the damper (17). The guide pin (21) protruding from the arm (19) to be locked is loosely fitted, and the damper (17) is moved from the fully open position to the fully closed position in conjunction with the rotation of the dial (22). The second groove portion (25B) for rotating within the range and the rotation of the dial (22) continued after the damper (17) is in the fully closed position, the support shaft of the louver housing (30) ( 37) a rack for meshing with the pinion (27) engaged with the air bearing member 37) and rotating the louver housing (30) to a position where the side wall (30A) closes the air outlet (13). 26) and the damper (17) is fully closed The first groove portion (25A) for releasing the engagement between the guide pin (21) protruding from the arm (19) and the second groove portion (25B) is provided. The vehicle air outlet structure according to claim 1.

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