JPH086188Y2 - Air conditioner blowout louver device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an outlet louver device for an air conditioner.

[Conventional technology]

FIG. 5 is a vertical cross-sectional view of a wall-mounted indoor unit of a conventional air conditioner, where 1 is a main body, 2 is a suction grill provided at the upper front of the main body 1, 3 is a heat exchanger, 4 is a heat exchanger 3. A cross-flow type fan, which is installed in the lower rear (right side of the figure) of
Reference numeral 5 is an air outlet provided in the lower part of the front surface of the main body 1, 6 and 7 are two air outlet louvers disposed in the air outlet 5, 8 is a drain pan disposed under the heat exchanger 3, and 9 is a suction grill. 2 is an air filter disposed behind the air filter 2.

During operation of the air conditioner, the fan 4 rotates and the heat exchanger 3
Refrigerant from an outdoor unit (not shown) circulates. Thus, the room air is sucked into the main body 1 through the suction grill 2 as shown by the solid arrow, and is cooled or heated by exchanging heat with the refrigerant in the process of flowing through the heat exchanger 3 and is urged by the fan 4. After that, the blowout louvers 6 and 7 are blown out from the blowout port 5.
And is blown out indoors. The drive device for the blowout louvers 6 and 7 is shown in FIGS.

That is, the horizontally extending rotary shaft 11 of the blowout louver 6 is supported by the bearing 12 and penetrates into the bore of the arm 14 to be pivotally supported.
The other end of the arm 14 is pivotally supported by the link 16 via a pin 15.
The other end of the link 16 is pivotally supported by a crank 19 which constitutes a clutch 18 via a pin 17.

On the other hand, the rotary shaft 20 of the blowout louver 7 extends parallel to the rotary shaft 11, is supported by a bearing 21 and is connected to a sleeve 23 fitted to the crank 19, and the other end of the sleeve 23 is connected to a motor shaft 24. Is connected to the motor 25 via.

A spring 26 is mounted on the outer peripheral surface 19a of the crank 19, and the spring 26 presses the inner peripheral surface 19b of the crank 19 and the outer peripheral surface 23a of the sleeve 23 with a predetermined sliding torque.

Further, the rotary shaft 11 is provided with a projection 11a, and the projection 11a abuts on the locking portions 13a and 13b formed on the bearing 12, whereby the rotary shaft 11 rotates within a predetermined angle θ range. It is like this. On the other hand, the rotary shaft 20 is also provided with a projection 20a, and the projection 20a abuts on the locking portions 22a and 22b formed on the bearing 21, so that the rotary shaft 20 has a common angle θ and It is adapted to rotate within an angle range including the angle α.

During operation of the air conditioner, the sleeve 23 is rotated by the rotational driving of the motor 25, and the blowout louver 7 is moved to the ninth position.
As shown in the figure, it is oscillated reciprocally between the horizontal position indicated by the solid line and the angle θ range immediately below the broken line. On the other hand, the rotational movement of the sleeve 23 is transmitted to the crank 19 which is pressed by the sleeve 23 and the spring 26 to be integrated with each other, and the crank 19 is rotated. As a result, the blow-out louver 6 is passed through the link 16 and the arm 14.
Is oscillated reciprocally between the horizontal position indicated by the solid line and the angle θ range directly below the broken line while maintaining a parallel state with the blowout louver 7.

When the air conditioner is stopped, the blowout louver 6
The motor 25 is driven to rotate further from a state where the positions 7 and 7 are directly below. Then, the outer peripheral surface 23a of the sleeve 23 and the inner peripheral surface 19b of the crank 19 have a predetermined sliding torque and the sliding sleeve 23
Only the chisel rotates the angle α so that the blowout louver 7 occupies the position where the blowout port 5 is closed. Thus, dust is prevented from entering the air conditioner through the air outlet.

[Problems to be solved by the device]

The blowout louver device of the conventional air conditioner has the following problems to be solved.

That is, in the clutch 18 that drives the conventional blow-out louver, the inner peripheral surface of the crank 19 that corresponds to the slip surface thereof.
The slipping torque of the slipping surface may vary due to a difference in surface processing accuracy of the outer peripheral surface 23a of the sleeve 23 and the sleeve 19b.

Therefore, when the slip torque is too small, the rotational movement of the sleeve 23 is not sufficiently transmitted to the crank 19 and the blowout louver 6
If the rotation angle between No. 7 and No. 7 deviates from each other, or if the slip torque is too large, the sleeve will be locked when the air conditioner is stopped.
There is a problem that the blowout louver 7 cannot be rotated to a position where the blowout louver 7 closes the blowout port 5 due to the non-rotation of 23.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a blowout louver device for an air conditioner that does not cause a deviation in the rotation angle between the blowout louvers and sufficiently closes the blowout port with a predetermined torque. is there.

[Means for solving the problem]

Means for Solving the Problems The present invention is, as a means for solving the above-mentioned problems, a first blowout louver which is arranged in parallel with an outlet and rotates about a rotation axis within a predetermined angle range, and the first blowout louver around a rotation axis. In a blow-out louver device of an air conditioner having a second blow-out louver which rotates within a predetermined angle range in addition to a common angle range, the rotary movement is driven by a motor and the rotational movement is given to the second blow-out louver. A sleeve that transmits and that is rotatably fitted to the sleeve and that locks the protrusion of the sleeve to follow rotation of the sleeve in one direction, and at the same time, for rotation in the opposite direction. A crank having a locking portion for releasing the protrusion in a required angle range, an elastic body interposed between the crank and the sleeve for following the rotation of the crank when the sleeve rotates in the opposite direction, and a clan. The rotary motion is intended to provide a blow louver device of an air conditioner which is characterized by comprising and means for transmitting to the first blow-out louver.

[Action]

The present invention has the following effects by having the above configuration.

Motor (forward / reverse motor) when the air conditioner is operating
When the sleeve is rotated within a predetermined angle range due to the rotational driving of the crank, the protrusion of the sleeve presses the engaging portion of the crank along with the rotation of the sleeve, so that the crank is rotated in synchronization with the sleeve.

Further, when the sleeve is rotated in the opposite direction within the predetermined angle range due to the reverse rotation of the motor, the projection of the sleeve is released from the engaging portion of the crank, but this time along with the rotation of the sleeve. Since the crank is attracted by the force of the elastic body, the crank is rotated in synchronization with the sleeve.

As a result, the second blowout louver and the first blowout louver to which the rotational operation is transmitted from the sleeve and the crank are reciprocally swung within a predetermined angle range while maintaining a mutually parallel state. On the other hand, when the operation of the air conditioner is stopped, only the sleeve is further rotated by a predetermined angle against the force of the elastic body due to the rotational driving of the motor, whereby the second outlet louver is rotated and the outlet is closed. It

〔Example〕

 An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a side view showing a drive device for an outlet louver according to this embodiment, FIG. 2 is an enlarged sectional view of the clutch in FIG. 1, and FIG. 3 is an exploded perspective view of the clutch in FIG. 4 is the second
In the IV-IV arrow view of the figure, (a) is a view of the sleeve 31, the crank 35, etc., and (b) is an explanatory view of the postures of the blowout louvers 6, 7 viewed in the same direction as (a). In FIG. 1, the same members as those in FIG. 6 are designated by the same reference numerals, and the description of the structure and operation thereof will be omitted.

In these drawings, the clutch 30 is composed of a sleeve 31, a crank 35 and a spring 39. Sleeve 31
Is connected to the motor shaft 24 of the motor 25 (forward / reverse motor), and the rear end is connected to the rotary shaft 20. Further, a protrusion 32 protruding upward is provided at the front end of the sleeve 31. A crank 35 is rotatably fitted in the sleeve 31, a locking portion 36 is formed at the front end of the crank 35 at a position aligned with the protrusion 32, and a hole 37 formed at the rear end. A link 16 is pivotally connected to the pin via a pin 17. A spring 39 is wound around the outer peripheral surface of the crank 35.
The protrusion 32 of the sleeve 31 is brought into contact with the engaging portion 36 of the crank 35 by penetrating and being stretched in the portion 38 and being pressed by a predetermined elastic force F. Reference numeral 34 is a convex portion provided below the rear end of the sleeve 31, and the convex portion 34 is locked to the rear end surface of the crank 35 to prevent the sleeve 31 and the crank 35 from coming off.

 Next, the operation of the above configuration will be described.

When the motor 25 is driven to rotate counterclockwise during operation of the air conditioner, as shown in FIG. 4 (note that FIG. 4 (a) shows the state in which both the blow-out louvers 6 and 7 are directly under (b)). The sleeve 31 is rotated, which causes the blowing louver 7
Is rotated in the angle θ range from the position directly below to the horizontal position. On the other hand, with the rotational movement of the sleeve 31, the protrusion 32 of the sleeve 31 presses the locking portion 36 of the crank 35, so that the crank 35 is rotated in synchronization with the sleeve 31 and the blowout louver 6 via the link 16 and the arm 14. Is rotated in a range of an angle θ from a position directly below to a horizontal position while maintaining a parallel state with the blowout louver 7.

Further, when the blowout louvers 6 and 7 are both in the horizontal position, when the motor 25 is driven to rotate clockwise, the sleeve
31 is rotated accordingly, and the blowout louver 7 is rotated within the angle θ range from the horizontal position to the position directly below. On the other hand, as the sleeve 31 rotates, the crank 35 moves the spring 39
Crank 35 is a sleeve because it is attracted by the tension of
The louver 6 is rotated in synchronization with 31 and is rotated through the link 16 and the arm 14 in an angle θ range from the horizontal position to the position directly below while maintaining the parallel state with the louver 7. Therefore, when the air conditioner is in operation, the blowout louver 6 and the blowout louver 7 are reciprocally rocked within the predetermined angle θ range without causing angular deviation. When the operation of the air conditioner is stopped, when the motor 25 is further driven to rotate in the clockwise direction from a state in which both the blowout louvers 6 and 7 are located directly below, the sleeve 31 is rotated in response to this and the blowout louver 7 is further rotated. It is rotated by α to close the outlet.

During this time, the crank 35 is not rotated, and therefore the protrusion 32 of the sleeve 31 is separated from the engaging portion 36 of the crank 35, and the spring 39 is maintained in a resilient pressure state larger than the resilient force F.

Next, when the motor 25 is driven to rotate counterclockwise from the state in which the outlet louver 7 closes the outlet, the sleeve
With the rotation of 31, the blowout louver 7 is rotated by a predetermined angle α from the closed position to the position directly below. During this time, the elastic force of the spring 39 gradually decreases, and when the blowout louver 7 is in the position directly below, the elastic force F causes the protrusion 32 of the sleeve 31.
Is pressed against the locking portion 36 of the crank 35 so as to abut.

After that, the crank 35 is rotated in synchronization with the sleeve 31 as described above.

As described above, according to the present embodiment, the torque transmission between the sleeve 31 and the crank 35 does not depend on the slip torque as in the conventional case, but the protrusion 32 of the sleeve 31 moves in one direction of rotation (rotation). Is forcibly transmitted by being locked to the locking portion 36 of the crank 35, and is transmitted in the reverse direction of rotation by the spring 39 interposed between the sleeve 31 and the crank 35.
There is no variation in the transmission force not only when using the locking portion 36 and the locking portion 36, but also when using the spring 39, which allows stable transmission at all times.
There is an advantage that the accuracy of the rotation of the blowout louvers 6 and 7 is maintained.

Also, when the operation is stopped, the blow louver 7 is rotated more than the position directly below, and the crank 35 stopped via the link 16 to the blow louver 6 stopped at the position directly below.
On the other hand, since the sleeve 31 is connected by the spring 39 having flexibility in the rotating direction, it is sufficient to rotate the sleeve 31 by a required angle against a fixed spring force without variation, and an excessively large slip torque resistance can be obtained. Since there is no meeting, there is an advantage that the blowout louver 7 can be closed at an accurate position.

[Effect of device]

Since the present invention is configured as described above, it has the following effects.

That is, during operation of the air conditioner, when the sleeve is rotated due to the rotational driving of the motor, the protrusion of the sleeve presses the locking portion of the crank against rotation in one direction,
Since the crank is attracted by the elastic force of the elastic body against the rotation in the opposite direction, a stable force always acts on the crank, and the crank reciprocally rotates accurately in synchronization with the reciprocating rotation of the sleeve. As a result, both blow-out louvers are reciprocally rocked within a predetermined angle range in synchronization with each other without causing angular deviation.

When the operation of the air conditioner is stopped, only the sleeve is rotated by utilizing the flexibility of the elastic body in accordance with the rotational driving of the motor, whereby one of the outlet louvers is further rotated by a predetermined angle and the outlet is closed. Therefore, dust is prevented from entering the air conditioner through the air outlet.

[Brief description of drawings]

FIG. 1 is a side view of an outlet louver device for an air conditioner according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of a clutch in FIG. 1, and FIG. 3 is an exploded view of the clutch in FIG. Perspective view, 4th
The drawing is a view taken along the line IV-IV in FIG. 2, where (a) is a view of a sleeve, a crank, etc., and (b) is a blowout louver 6 viewed in the same direction as (a).
7 is an explanatory view of the posture, FIG. 5 is a vertical cross-sectional view showing a wall-mounted indoor unit of a conventional air conditioner, FIG. 6 is a side view of a conventional blow-out louver device, and FIG. 7 is a conventional view in FIG. FIG. 8 is a sectional view of the clutch of FIG. 8, FIG. 8 is a sectional view taken along the line VIII-VIII of FIG. 6, and FIG. 9 is an explanatory view showing the posture (rotating state) of the conventional blow-out louver shown in correspondence with FIG. Is. 5 ... Outlet, 6 ... Outlet louver (first outlet louver), 7 ... Outlet louver (second outlet louver), 11, 20 ... Rotating shaft, 16 ... Link, 25 ... Motor, 31 ... Sleeve, 32 ... Projection part, 35 ... crank, 36 ... locking part, 39 ... spring.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kazuyoshi Tatematsu Kazuyoshi Tatematsu, Nishi-Biwajima-cho, Nishi-Kasugai-gun, Aichi Prefecture, Asahi-cho, 3-chome, Air-Conditioning Factory, Mitsubishi Heavy Industries, Ltd. (72) Kenji Nakamura Nishi-Bashijima-cho, Nishi-Kasugai-gun, Aichi Prefecture Asahicho 3-chome No. 1 Mitsubishi Heavy Industries, Ltd. Air Conditioning Factory (56) References

Claims (1)

[Scope of utility model registration request] 1. A first blow-out louver which is arranged parallel to the blow-out port and rotates about a rotation axis within a predetermined angle range, and an angle range around the rotation axis which is common to the first blow-out louver. In addition, in the blowing louver device of the air conditioner, which comprises a second blowing louver that rotates within a predetermined angle range,
The sleeve is rotatably driven by a motor to transmit the rotational movement to the second blowout louver and has a projection and a sleeve which is rotatably fitted to the sleeve and locks the projection of the sleeve in one direction. A crank that is capable of following rotation and at the same time has a locking portion that releases the projection within a required angle range for rotation in the opposite direction, and the reverse of the sleeve that is interposed between the crank and the sleeve. A blow-out louver device for an air conditioner, comprising: an elastic body that follows the rotation of the crank when rotating in a predetermined direction; and means for transmitting the rotational movement of the crank to the first blow-out louver.