JP2004066839A - Wind direction adjusting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wind direction adjusting device capable of oscillating a louvre arranged in an air outlet port at an almost constant speed. <P>SOLUTION: An oscillating means of a rear louver 6 is constituted by an oscillating link 7 connected to the rear louver 6 for swinging air blown out from the air outlet port 2a to an inside of a cabin and oscillating the rear louver 6, a cam means 10 comprising an eccentric cam 10a engaged with the oscillating link 7, and a rotating drive means 8 for oscillating the rear louver 6 at the almost fixed speed through the oscillating link 7 by rotationally driving the eccentric cam 10a. The air can be evenly blown out from the air outlet port 2a to horizontal and vertical directions in the cabin. A time period required for making the inside of the cabin at the almost even temperature can be reduced, and a time period when the air is blown to the horizontally direction is not elongated. Therefore, an unpleasant feeling is not given to an occupant, and comfortability of the inside of the cabin is improved. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction adjusting device that swings air and blows air from an air outlet into a vehicle interior.
[0002]
[Prior art]
Conventionally, in vehicles such as automobiles equipped with an air conditioner (air conditioner), air conditioned by the air conditioner is blown into the vehicle compartment from an air outlet of a wind direction adjustment device provided on a dashboard or the like. The air outlet is provided with a front louver and a rear louver for adjusting the wind direction of the blown air.
[0003]
In addition, for example, Japanese Patent Publication No. 7-60013 and Japanese Patent Application Laid-Open No. 2001-30750 disclose air blown into the vehicle interior from the air outlet by swinging a louver provided at the air outlet by a motor. A wind direction adjusting device adapted to swing is described.
[0004]
In the wind direction adjusting device of the former publication, the front ends of a plurality of louvers (blades) provided in a case are linked by a first link, and each louver can swing simultaneously in the same direction. The rear end of the louver is rotatably supported by a substantially U-shaped frame, and the louver and the frame swing between each louver and the frame as if they were integral. A moderation mechanism for moving is provided.
[0005]
The open end of each frame is rotatably supported on the upper and lower inner surfaces of the case. Each frame is linked by a second link, and an elongated hole is formed at one end of the second link. The crankpin inserted in the elongated hole is rotated by a motor to swing each louver, thereby swinging the air blown into the vehicle compartment from the air outlet. .
[0006]
On the other hand, the wind direction adjusting device disclosed in the latter publication also has a plurality of louvers (vertical louvers) rotatable in association with each other in a case, and a sector gear is attached to one of these louvers. A spur gear meshes with the gear.
[0007]
Further, a sector gear is also attached to the rotation shaft of the motor that swings each louver, and another spur gear provided coaxially with the spur gear is meshed with this sector gear, and between each spur gear. A friction clutch is provided.
[0008]
When the sector gear is rotated forward and reverse by the motor, the fan gear on the louver side is rotated forward and reverse via two spur gears connected by the friction clutch, whereby each louver is swung and the air is blown from the air outlet. The air blown into the vehicle interior is configured to swing.
[0009]
[Problems to be solved by the invention]
However, as in the wind direction adjusting device of the former publication, a crank pin fitted in a long hole formed at one end of the second link is rotated by a motor to swing the louver, so that the crank pin is Due to the structure in which the second link reciprocates in the left and right direction while moving in the straight elongated hole, the swing speed of each louver is slower at the left and right ends than at the center, and as a result, the time for blowing air in the left and right directions Therefore, there is a problem that it takes time to make the temperature in the vehicle cabin uniform, and that the air blowing direction is deviated, thereby giving an uncomfortable feeling to the occupant.
[0010]
In addition, a frame is provided for each louver, and a detent mechanism is provided between the louver and the frame, and a first link for linking each louver is provided separately from a second link for swinging the louver. Because of this, the structure is complicated and the number of parts is large, so that many man-hours are required to manufacture and assemble the parts, and there is a problem that the wind direction adjusting device becomes expensive.
[0011]
On the other hand, when the motor is rotated forward and reverse to swing each louver, as in the wind direction adjusting device of the latter publication, when the motor reverses from normal rotation to reverse rotation or when reverse rotation from reverse rotation to normal rotation occurs. However, since the swing of the louver is temporarily stopped, the time for blowing air in the left and right direction becomes longer as in the former publication, and it takes time to make the temperature in the vehicle compartment uniform, and the direction of air blowing is The offset causes discomfort to the occupant, and requires control means for controlling the forward and reverse rotation of the motor. Therefore, there are problems that the structure becomes complicated and the wind direction adjusting device becomes expensive.
[0012]
The present invention has been made in order to improve such a conventional problem, and provides a wind direction adjusting device capable of swinging a louver provided at an air outlet at a substantially constant speed, so that the temperature in a vehicle compartment is reduced. It is intended to shorten the time required for uniformity and improve comfort.
[0013]
[Means for Solving the Problems]
In order to achieve the above object, a wind direction adjusting device of the present invention is provided with a louver for adjusting a wind direction of air at an air outlet so as to be rotatable, and swinging the louver by a rotation driving means, so that a vehicle can be moved from an air outlet through a vehicle. A wind direction adjusting device configured to swing air blown into a room, comprising: a swing link connected to a louver and swinging the louver; and a cam means including an eccentric cam engaged with the swing link. And a rotary drive means for rotating the louver at a substantially constant speed via a swing link by rotating and driving the eccentric cam.
[0014]
With the above configuration, air can be uniformly blown from the air outlet in the left-right direction or the up-down direction of the vehicle interior, so that the time required for the vehicle interior to reach a substantially uniform temperature can be shortened and the left-right direction can be achieved. Since the time during which the air is blown out does not become long, the occupant does not feel uncomfortable, and the comfort in the vehicle interior is also improved.
[0015]
In addition, the means for swinging the louver can be configured with only a small number of parts including only the swing link, the eccentric cam, and the rotation drive means, so that the wind direction adjusting device can be reduced in size and the installation space can be saved, and the parts can be manufactured. Since the number of steps for assembling and assembling can be greatly reduced, the cost of the wind direction adjusting device can be reduced.
[0016]
In order to achieve the above object, the wind direction adjusting device of the present invention releases the engagement between the swing link and the eccentric cam when the louver is manually adjusted in wind direction, and then, when the eccentric cam is driven to rotate, the swing link becomes The clutch means for reengaging the eccentric cam is provided on the cam means.
[0017]
According to the above configuration, when the louver is manually rotated while the rotation driving unit is stopped, the clutch unit releases the engagement between the swing link and the eccentric cam, so that the cam unit and the rotation driving unit are excessively large. The rocking link and the eccentric cam are re-engaged when the eccentric cam is rotationally driven by the rotation driving means, without being damaged by the operating force, so that there is no hindrance to the louver rocking operation. There is no.
[0018]
To achieve the above object, the wind direction adjusting device of the present invention comprises an eccentric cam having a cam groove for eccentric cam means, and a cam pin protruding from a swing link and fitted into the cam groove, An eccentric cam in which the clutch means is tiltably supported on the rotating shaft of the rotary drive means is formed by a biasing means such as a spring for biasing the cam to be always horizontal.
[0019]
According to the above configuration, the cam means and the clutch means can be configured with a small number of parts, so that the cam means and the clutch means can be easily assembled, the size of the wind direction adjusting device can be reduced, and the louver is manually rotated. When the wind direction is adjusted, a click feeling is obtained when the cam pin comes out of the cam groove, so that the returning operation of returning the louver to the original position can be easily performed.
[0020]
In order to achieve the above object, the wind direction adjusting device of the present invention is configured such that, when the rotation of the louver by the rotation driving unit is stopped, the rotation of the louver is stopped until the louver reaches the neutral position, and then the rotation driving unit is stopped. It was made.
[0021]
According to the above configuration, since the louver can always be rotated from the neutral position and the wind direction can be adjusted by the louver, the wind direction can be easily and quickly adjusted.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described in detail with reference to the drawings.
[0023]
The drawing shows a wind direction adjusting device having a double structure having air outlets on the left and right sides, and can be applied to a wind direction adjusting device having one air outlet.
[0024]
1 is a perspective view of the wind direction adjusting device, FIG. 2 is an exploded perspective view of the same, FIG. 3 is a cross-sectional view, FIG. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIGS. is there.
[0025]
The main body 1 of the wind direction adjusting device has a pair of cases 1a which are separated to the left and right and are connected and integrated by a connecting plate 1b.
[0026]
Each case 1a is formed in the shape of a rectangular tube having openings 1c and 1d at the front and rear ends, and the opening 1c on the upstream side is provided with an air conditioner (both not shown) through a duct piped so as not to be exposed to the vehicle interior. ), And the downstream opening 1d is connected to a panel-shaped finisher 2 having air outlets 2a on the left and right.
[0027]
The finisher 2 has a rectangular air outlet 2a at a position corresponding to the openings 1c and 1d of the case 1a, and turns on and off a rotation driving means 8 described later between the air outlets 2a. Switch 3 is provided.
[0028]
A plurality of pin holes 1e are formed at equal intervals in the vertical direction on both sides of the downstream opening 1d of each case 1a, and the pins 4a protruding from both sides of the front louver 4 are turned in these pin holes 1e. It is movably inserted.
[0029]
The front louver 4 is composed of a plurality of horizontal louvers, and a pin 4a is protruded at the center of both ends, and a connection pin 4b protruded at a rear portion of one end is inserted into a pin hole 5a of the connection link 5, respectively. The front louvers 4 are interlocked with each other by the connection link 5 by being inserted, and the knobs 9 slidably attached to the front louvers 4 in the middle stage in the left-right direction are operated in the vertical direction. Each front louver 4 can be simultaneously rotated in the vertical direction.
[0030]
A plurality of pin holes 1f are formed on the upper and lower surfaces of each case 1a slightly behind the front louver 4 at equal intervals in the left-right direction. Pins protruding from both ends of the rear louver 6 are formed in these pin holes 1f. 6a is rotatably fitted.
[0031]
The rear louver 6 is composed of a plurality of vertical louvers, a pin 6a is protruded at the center of both ends, and a shaft portion 6b is formed by cutting out a front edge of the rear louver 6 located at the center. A fork 9a protruding from the rear edge of the knob 9 is fitted to the shaft 6b.
[0032]
At the rear end on the upper end side of each rear louver 6, a swing pin 6c protrudes, and the swing pin 6c is provided in each pin hole 7a of a swing link 7 provided above each rear louver 6. It is inserted from below.
[0033]
The swing links 7 are provided in the upper part in the case 1a in the left-right direction, and pin holes 7a are formed at the same intervals as the respective rear louvers 6, and the opposing end of each swing link 7 is It protrudes above the connecting plate 1b from a cutout hole 1g formed at the corner of 1a.
[0034]
On the upper surface of the connecting plate 1b, a rotation driving means 8 composed of a DC electric motor is fixed by a fixing tool (not shown) with the rotation shaft 8a facing upward, and a cam means 10 is mounted on the rotation shaft 8a of the rotation driving means 8. A shaft hole 10d formed in the center of the eccentric cam 10a is non-rotatably fitted.
[0035]
The eccentric cam 10a is formed of a disk, and the upper and lower opening edges of the shaft hole 10d are tapered as shown in FIG. And a clutch means 11 is provided at the upper end of the rotating shaft 8a.
[0036]
The clutch means 11 includes a spring seat 11b fixed to the end of the rotating shaft 8a by a fixing tool 11a, and a coil interposed between the spring seat 11b and the eccentric cam 10a for urging the eccentric cam 10a to be always horizontal. And a biasing means 11c formed of a spring.
[0037]
An annular cam groove 10b eccentric to the center of the eccentric cam 10a is formed on the lower surface of the eccentric cam 10a.
[0038]
As shown in FIG. 4, the cross-sectional shape of the cam groove 10b is substantially trapezoidal, the width of the opening edge side being wider than the lower surface side. A cam pin 10c projecting substantially vertically is fitted from below.
[0039]
The tip of the cam pin 10c is formed in a hemispherical shape, and rotates around the inside of the cam groove 10b as the eccentric cam 10a rotates. The circumferential length of the cam groove 10b is determined when the eccentric cam 10a makes one rotation. Is set in advance so that the rear louver 6 swings one reciprocation in the left-right direction.
[0040]
Next, the operation of the above-configured wind direction adjusting device will be described in detail with reference to the drawings shown in FIGS.
[0041]
In a state where the rotation driving means 8 is stopped, each rear louver 6 is stopped at a neutral position parallel to the center line O of the case 1a as shown in FIG. 3 so that air is blown forward from the air blowout port 2a. In addition, even when the switch 3 is turned off during the swing operation, an electric circuit is configured in advance so that the rotation driving means 8 is stopped after each rear louver 6 rotates to the neutral position shown in FIG. I have.
[0042]
In this state, the air that has flowed into the case 1a from the upstream opening 1c is adjusted forward by the rear louver 6 and is blown into the vehicle compartment from the air outlet 2a. By moving the front louver 4 in the vertical direction, the wind direction can be adjusted in the vertical direction.
[0043]
Next, when the switch 3 is turned on in order to blow air from the above state into the entire vehicle interior, the rotation driving means 8 starts rotating and the eccentric cam 10a of the cam means 10 is kept counterclockwise as shown in FIG. Rotate at the speed.
[0044]
Since the cam pin 10c fitted in the cam groove 10b moves in the eccentric cam groove 10b by the rotation of the eccentric cam 10a, the swing link 7 is moved rightward at a constant speed, thereby Since each rear louver 6 is swung leftward about the pin 6a, the air blown out from the air outlet 2a is swung leftward.
[0045]
When the eccentric cam 10a is rotated by 90 degrees, the leftward swing angle θ of each rear louver 6 becomes maximum as shown in FIG.
[0046]
Thereafter, when the eccentric cam 10a is further rotated, the swing link 7 is moved at a constant speed to the left by the cam groove 10b of the eccentric cam 10a, and accordingly, each rear louver 6 is moved rightward around the pin 6a. Start rocking.
[0047]
When the eccentric cam 10a is rotated by 180 degrees, the respective rear louvers 6 reach the neutral position shown in FIG. 3, and thereafter the eccentric cam 10a is further rotated, so that the swing link 7 is moved to the left. Since each rear louver 6 swings rightward about the pin 6a, the air blown out from the air outlet 2a swings rightward.
[0048]
When the eccentric cam 10a is rotated by 270 degrees, the rightward swing angle θ of each rear louver 6 becomes maximum as shown in FIG.
[0049]
Thereafter, when the eccentric cam 10a is further rotated, each rear louver 6 is swung to the left, and returns to the neutral position shown in FIG. 3 when the eccentric cam 10a is rotated by 360 degrees.
[0050]
The above operation is repeated to swing the air blown into the passenger compartment from the air outlet 2a at a substantially constant speed. During the swinging operation, the knob 9 is operated in the up and down direction to move the air in the up and down direction. The wind direction can be adjusted.
[0051]
If the knob 9 is gripped by a finger when adjusting the wind direction in the vertical direction, the swinging operation of the rear louver 6 is temporarily restricted, and a load is applied to the rear louver 6.
[0052]
However, the biasing means 11c provided between the eccentric cam 10a and the spring seat 11b is bent by this load, and the eccentric cam 10a is inclined as shown in FIG. 7, and the cam pin 10c is disengaged from the cam groove 10b. It functions as a clutch that cuts off between the louver 6 and the rotation driving means 8.
[0053]
As a result, no overload is applied to the rotation drive means 8, and the cam pin 10c is fitted into the cam groove 10b when the eccentric cam 10a makes one rotation, so that the rear louver 6 starts swinging again.
[0054]
As described above, during the operation of the rotary drive means 8, the air blown into the vehicle compartment from the air outlet 2a swings at a constant speed, so that the time required for the vehicle compartment to reach a substantially uniform temperature is reduced. In addition to this, since the time during which air is blown in the left and right direction does not become long, the occupant does not feel uncomfortable, thereby improving the comfort in the vehicle interior.
[0055]
When the switch 3 is turned off to stop the swing operation, the rear louver 6 is swung until the rear louver 6 reaches the neutral position, and then the rotation driving means 8 is stopped at the position shown in FIG. When the knob 9 is moved in the left-right direction along the front louver 4 to adjust the air blown from the air outlet 2a in the left-right direction in this state, the fork 9a protruding from the rear end of the knob 9 is moved rearward. The shaft 6b of the louver 6 is moved in the left-right direction.
[0056]
At this time, since the eccentric cam 10a is stopped together with the rotation drive means 8, the eccentric cam 10a is tilted as shown in FIG. 7 against the urging means 11c, and the cam pin 10c is disengaged from the cam groove 10b and the knob 9 is disengaged. At the same time when the click feeling is generated, the eccentric cam 10a is pressed against the tip of the cam pin 10c by the urging means 11c. In this state, the knob 9 is moved in the left-right direction to apply the resistance to the knob 9. In this state, the rear louver 6 can adjust the wind direction in the left and right direction, and the rear louver 6 can be held at the adjustment position by the resistance, so that the adjustment position of the rear louver 6 is not displaced by the wind pressure.
[0057]
Since the rear louver 6 was operated by the knob 9 to adjust the wind direction in the left-right direction, the eccentric cam 10a was rotated by the rotation driving means 8 even when the cam pin 10c was disengaged from the cam groove 10b of the eccentric cam 10a. At this time, since the cam pin 10c is automatically fitted into the cam groove 10b, there is no hindrance to the swing operation.
[0058]
In the above embodiment, the front louver 4 is constituted by a plurality of horizontal louvers, and the rear louver 6 is constituted by a plurality of vertical louvers. However, the front louver 4 is constituted by a vertical louver, and the rear louver 6 is constituted by a lateral louver. Of course, of course, in this case, since the horizontal louver is swung, the air blown into the vehicle interior from the air outlet 2a swings up and down.
[0059]
【The invention's effect】
As described above in detail, the present invention relates to a swing link connected to a louver for swinging air blown into a vehicle interior from an air outlet and swinging the louver, and an eccentric cam engaged with the swing link. The louver swing means is constituted by a cam means consisting of a louver and a rotary drive means for swinging the louver at a substantially constant speed via a swing link by rotating the eccentric cam. Since air can be blown out more uniformly in the left-right direction or up-down direction in the vehicle interior, the time required for the vehicle interior to reach a substantially uniform temperature can be shortened, and the time in which air is blown out in the left-right direction can be reduced. Since it does not become long, it does not cause discomfort to the occupant, thereby improving the comfort in the vehicle interior, and means for swinging the louver is provided by the swing link, the eccentric cam and the rotation. Since it can be configured with only a small number of parts with only driving means, it is possible to reduce the size of the wind direction adjusting device and save space for installation, and to significantly reduce the number of steps for manufacturing and assembling the components. Cost can be reduced.
[0060]
Also, when the louver is manually adjusted in wind direction, the engagement between the swing link and the eccentric cam is released, and then the clutch means for re-engaging the swing link and the eccentric cam when the eccentric cam is driven to rotate is used as the cam means. When the louver is manually rotated while the rotation driving means is stopped, the clutch means releases the engagement between the swing link and the eccentric cam, so that the cam means and the rotation driving means are excessively large. And the eccentric cam is re-engaged when the eccentric cam is rotationally driven by the rotary drive means, which hinders the louver's swing operation. Nothing.
[0061]
Further, the eccentric cam includes a cam groove having a cam groove for eccentrically arranging the cam means, and a cam pin protruding from the swing link and fitted into the cam groove. The clutch means can be tilted to the rotation shaft of the rotation drive means. Since the supported eccentric cam is formed by urging means such as a spring for urging the cam to be always horizontal, the cam means and the clutch means can be configured with a small number of parts. In addition to the ease of assembly, the size of the wind direction adjustment device can be reduced, and if the louver is manually rotated to adjust the wind direction, a click feeling is obtained when the cam pin comes out of the cam groove. It is possible to easily perform the return operation to return to.
[0062]
In addition, when the rotation of the louver is stopped by the rotation driving means, the louver is swung until the louver is in the neutral position, and then the rotation driving means is stopped. Therefore, the louver is always rotated from the neutral position. Since the wind direction can be adjusted by the louver, the wind direction can be easily and quickly adjusted.
[Brief description of the drawings]
FIG. 1 is a front perspective view of a wind direction adjusting device according to an embodiment of the present invention.
FIG. 2 is an exploded perspective view of the wind direction adjusting device according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view of the wind direction adjusting device according to the embodiment of the present invention.
FIG. 4 is a sectional view taken along line AA of FIG.
FIG. 5 is an operation explanatory view of the wind direction adjusting device according to the embodiment of the present invention.
FIG. 6 is an operation explanatory view of the wind direction adjusting device according to the embodiment of the present invention.
FIG. 7 is an operation explanatory view of the wind direction adjusting device according to the embodiment of the present invention.
[Explanation of symbols]
2a Air outlet 4 Front louver 6 Rear louver 7 Swing link 8 Rotary drive means 8a Rotary shaft 10 Cam means 10a Eccentric cam 10b Cam groove 10c Cam pin 11 Clutch means 11c Urging means

Claims (4)

A louver for adjusting the wind direction of the air is rotatably provided at the air outlet, and the air blown into the vehicle compartment from the air outlet is swung by swinging the louver by a rotation driving means. A wind direction adjusting device, comprising: a swing link connected to the louver and swinging the louver; a cam means including an eccentric cam engaged with the swing link; and rotating the eccentric cam. And a rotary drive means for swinging the louver at a substantially constant speed via the swing link. A clutch that releases the engagement between the swing link and the eccentric cam when the louver is manually adjusted in wind direction, and then re-engages the swing link and the eccentric cam when the eccentric cam is driven to rotate. 2. A wind direction adjusting device according to claim 1, wherein means is provided on said cam means. The cam means includes an eccentric cam having an eccentric cam groove, and a cam pin protruding from the swing link and fitted in the cam groove. The wind direction adjusting device according to claim 1 or 2, wherein the eccentric cam, which is tiltably supported on a rotating shaft, is formed by an urging means for urging the cam to be always horizontal. 4. The method according to claim 1, wherein, when the rotation of the louver by the rotation driving unit is stopped, the rotation of the louver is stopped until the louver is rotated to a neutral position. A wind direction adjusting device according to the present invention.

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