JP2512001Y2 - Wind direction adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an airflow direction adjusting device provided at an air outlet of a warm air heater, an air conditioner, or the like.

(Prior Art) As a wind direction adjusting device of a conventional warm air heater or the like, a louver for adjusting the wind direction provided at a hot air outlet is automatically swung by a motor via a link / crank mechanism. There is something I did.

In such a hot-air heater, when the louver of the wind direction adjusting device is used in a stopped state, the louver does not face the desired direction by simply stopping the motor, and in this state Since the louver is fixed by the link / crank mechanism and the motor, in order to orient the louver in the desired direction, it is necessary to stop the motor in synchronization with the swing of the louver, which makes the operation troublesome. It was

In this respect, for example, as shown in Japanese Utility Model Laid-Open No. 59-139841, a member on the motor side and a member on the louver side are slidably connected via a spring, and when the louver is stopped, it is manually operated. BACKGROUND ART An electric louver that can direct a louver in an arbitrary direction is known.

However, in the configuration disclosed in Japanese Utility Model Laid-Open No. 59-139841, since the member on the motor side and the member on the louver are connected simply by sliding contact by the biasing force of the spring, the change in elastic force of the spring body, Alternatively, there is a problem that the louver may not be reliably driven by the motor due to wear of the members.

(Problems to be Solved by the Invention) As described above, the wind direction adjusting device in which the louver for adjusting the wind direction provided at the air outlet is automatically swung by the motor via the link / crank mechanism. Then
When using the louver in a stopped state, it was troublesome to orient the louver in a desired direction.

Further, in the configuration described in Japanese Utility Model Laid-Open No. 59-139841, since the member on the motor side and the member on the louver side are connected simply by sliding contact by the biasing force of the spring, the change in elastic force of the spring body, or There is a problem that the louver may not be driven reliably by the motor due to wear of the members.

The present invention has been made in view of such a point, and can automatically and reliably swing the louver, and easily orients the louver in an arbitrary direction when the louver that automatically swings is stopped. It is an object of the present invention to provide a wind direction adjusting device that can be used.

(Means for Solving the Problem) According to the present invention, a louver for adjusting the wind direction is swingably provided at an air outlet, a driven crank is connected to a spindle of the louver, and one end of a link is connected to the driven crank. Is connected to the shaft,
In the wind direction adjusting device in which the other end of this link is pivotally connected to a drive crank and the drive crank is rotated by a motor, the louver swings beyond a predetermined angle. A stopper for restricting movement is provided, and the support shaft of the louver and the driven crank are connected via a clutch portion, and the clutch portion has a plurality of engaging portions which are removably fitted to each other, And a spring that elastically presses one engaging portion toward the other engaging portion.

(Operation) In the wind direction adjusting device of the present invention, when the motor is driven, the drive crank rotates, the driven crank swings via the link, and the driven crank is engaged with the engaging portions of the clutch portion. The support shaft of the louver connected by rotating the louver automatically swings within the predetermined range regulated by the stopper. Then, when the motor is stopped, the louver also stops, and in this stopped state, when a force is applied to the louver side, the engagement between the engaging portions is released against the biasing force of the spring, and the clutch portion is forcibly forced. While sliding, the louver rotates within a predetermined range regulated by the stopper. Next, when the motor is driven to swing the driven crank, the clutch part deviates from the original state, so the swing of the louver is restricted by the stopper, and in this state, the clutch part slips and returns to its original state. After that, similarly to the original normal state, the louver automatically swings within the predetermined range regulated by the stopper together with the driven crank.

(Embodiment) An embodiment of the wind direction adjusting device of the present invention is shown in FIGS.
It will be described with reference to the drawings.

FIG. 4 shows a warm air heater, 1 is a box-shaped main body, an inverted U-shaped duct 2 is formed inside the main body 1, and a rear end portion of the duct 2 is a rear lower portion of the main body 1. Air intake port 3
And the front end of the duct 2 is opened at the lower part of the front side of the main body 1 as a hot air outlet 4.

A fan 6 that is rotated by a motor 5 is provided in the middle of the duct 2, and a ceramic heater 7 is provided on the outlet 4 side of the fan 6, and when the motor 5 is energized and the fan 6 is driven, suction is performed. Mouth 3 to duct 2
When the ceramic heater 7 is energized in this state, the air is warmed in the duct 2 and the air is blown out from the outlet 4. The air is warm air.

A plurality of horizontal horizontal louvers 11 are fixedly provided at the outlet 4 as an airflow direction adjusting device 10 for the hot air to be blown, and are located inside the horizontal louvers 11.
A plurality of vertical vertical louvers 12 are provided so as to be capable of swinging in the left-right direction.
Thus, the louver frame 13 having a rectangular tubular shape automatically swings in the left-right direction.

The horizontal louver 11, the vertical louver 12, and the louver frame 13 are both formed of a heat-resistant material such as phenol resin or polybutyl terephthalate resin, but in particular, a plate-like member is provided around the plurality of horizontal horizontal louvers 11. When the decorative frame 14 is integrally formed of the same heat-resistant material, and the decorative frame 14 is extended to the front surface of the main body 1 around the blowout port 4, and when the temperature of the warm air becomes abnormally high. Moreover, the periphery of the outlet 4 is prevented from being deformed.

That is, when an object is placed in front of the inlet 3 or the outlet 4 or a cloth or the like is hung on the body 1, the air volume decreases and the temperature of the warm air blown out from the outlet 4 becomes high (100 degrees Celsius).
In this case, the power supply to the ceramic heater 7 is stopped by an overheat protector or the like.
Since there is a response time until the overheat protector and the like operate, the temperature around the outlet 4 of the main body 1 may become high during this time. Since the decorative frame 14 is made of the same heat-resistant material as the horizontal louver 11, the vertical louver 12, and the louver frame 13, there is no fear of deformation.

 Next, the vertical louver 12 will be described.

First, a plurality of vertical louvers 12 are supported in the rectangular cylindrical louver frame 13 via supporting shafts 21 projecting from the upper and lower portions thereof so as to be capable of swinging in the left-right direction. As shown in FIG. 3, by connecting the interlocking rods 23 to the connecting shafts 22 provided on the rear side portions of the respective upper support shafts 21, when one vertical louver 12 is rotated by the drive mechanism 24, the interlocking rods 23 Through
All the vertical louvers 12 are interlocked with each other so as to rotate in parallel with each other.

The support shaft 21 on the upper side of the vertical louver 12 provided with the drive mechanism 24 is, as shown in FIGS. 1 to 3, a louver frame.
A clutch body 27 is integrally mounted on the support shaft 21 so as to project from the upper side of the support shaft 21, and a driven crank 28 of the drive mechanism 24, a spring 29, and a washer 30 are fitted to the upper boss portion 27a of the clutch body 27. Then, the spring 29 is compressed by the washer 30 and
In a state where the driven crank 28 is crimped to the disk portion 27b of the clutch body 27, a boss portion 27a of the clutch body 27 is provided with an E ring 31 for preventing the washer 30 from coming off.

Then, as shown in FIG. 3, a plurality of radial groove grooves that engage with each other as engaging portions are formed on the pressure-bonding surfaces of the disk portion 27b of the clutch body 27 on the side of the support shaft 21 and the driven crank 28 that face each other.
27c and a ridge 28a are formed, and this crimp surface serves as the clutch portion 32.

In addition, the protrusion 2 is provided on the lower surface of the disc portion 27b of the clutch body 27.
7d is projected, and a pair of stoppers 13a for this projection 27d.
Are formed at a predetermined interval on the upper part of the louver frame 13, whereby the rotation angle of the vertical louver 12 is regulated,
The vertical louver 12 can be rotated within a predetermined range from the state where the protrusion 27d abuts the one stopper 13a to the abutment of the other stopper 13a.

Then, the drive mechanism 24 connects the shaft portion 35a at one end of the link 35 to the driven crank 28, connects the shaft portion 35b at the other end of the link 35 to the drive crank 36, and connects the drive crank 36 to the speed reducer. It is configured by being attached to the output shaft 37a of the motor 37 with the.

An operation knob 40 is provided at the front portion of the vertical louver 12 provided with the drive mechanism 24, and the operation knob 40 is provided between the horizontal louvers 11 and in front of the outlet 4 as shown in FIG. Overhangs.

With this configuration, in the warm air heater, when the drive crank 36 is rotated by the motor 37, the driven crank 28 swings by a predetermined angle, and the swing of the driven crank 28 is caused by the spring 29. The vertical louver 12 is transmitted to the clutch body 27 via the clutch portion 32 engaged with the vertical louver 12 together with the clutch body 27 by a predetermined angle.

In this way, in the state in which the vertical louver 12 automatically swings, the plurality of radial concave grooves 27c of the clutch body 27 on the side of the support shaft 21 forming the clutch portion 32 and the plurality of radial grooves 27c on the driven crank 28 side. The radial ridges 28a are fitted to each other, and in this state, when the vertical louver 12 swings, the rotation direction is reversed immediately before the projection 27d of the clutch body 27 contacts the stopper 13a. The protrusion 27d of the clutch body 27 does not come into contact with the stopper 13a.

When the motor 37 is stopped in this state, the vertical louver 12 also stops.

Then, in this stopped state, the driven crank 28 cannot be rotated because it is connected to the motor 37 with a speed reducer, but by moving the operation knob 40, the driven crank 28 is left as it is and the driven crank 28 is forcibly driven. While sliding the clutch part 32 between the crank 28 and the clutch body 27,
Can be rotated together with the vertical louver 12 within a predetermined range regulated by the stopper 13a.
Can be oriented in any direction within a given range.

Next, from this state, the motor 37 is driven to drive the vertical louver.
When 12 is swung, since the clutch portion 32 is displaced from the original state, the swing of the vertical louver 12 is restricted by the stopper 13a, and in this state, the clutch portion 32 slips back to the original state, Clutch body on the side of the support shaft 21 that constitutes the clutch portion 32
The plurality of radial concave grooves 27c of 27 and the plurality of radial protrusions 28a on the driven crank 28 side are fitted in the original combination, and thereafter, the vertical louver 12 is stopped as in the original normal state. 13
It automatically swings within the specified range regulated by a.

In the above-described embodiment, the clutch body 27 and the vertical louver 12 for the driven crank 28 are formed separately, and the clutch body 27 is later integrally fitted to the support shaft 21 of the vertical louver 12. Between the support shaft 21 and the driven crank 28 of the clutch part 32
The clutch body 27 and the vertical louver must be installed from the beginning.
The twelve support shafts 21 may be integrally formed.

Further, in the above-described embodiment, the stopper 13a for restricting the rotation range of the vertical louver 12 is provided on the clutch body 27, but the invention is not limited to this, and may be directly provided on the vertical louver 12.

(Effect of the Invention) According to the present invention, in the wind direction adjusting device, when the motor is driven, the drive crank rotates, the driven crank swings through the link, and the driven crank swings between the engaging portions of the clutch portion. The support shaft of the louver connected through the engagement of turns rotates the louver for adjusting the wind direction automatically and reliably within the predetermined range regulated by the stopper. Then, when the motor is stopped, the louver also stops, but in this stopped state, a force is applied to the louver side to disengage the engaging portions against each other against the biasing force of the spring, and the clutch is forcibly forced. The louver can be rotated within a predetermined range regulated by the stopper while sliding the portion. Therefore,
It is extremely easy to use with the louver stopped in the desired direction. Next, when the motor is driven and the driven crank is swung from this state, the clutch part returns to the original state while slipping by the stopper, so that the louver automatically shakes as in the original normal state. Can be moved.

[Brief description of drawings]

FIG. 1 shows an embodiment of the wind direction adjusting device of the present invention. FIG. 1 is a partial sectional view of a main part, FIG. 2 is a plan view of the main part, FIG. 3 is an exploded perspective view of the main part, and FIG. FIG. 3 is a cross-sectional view of a warm air heater equipped with an air flow direction adjusting device. 4 ... Blowout port, 10 ... wind direction adjustment device, 12 ... louver,
13a ... stopper, 21 ... spindle, 27c ... concave groove as engagement part, 28 ... driven crank, 28a ... projection strip as engagement part, 29 ... spring, 32 ... clutch part, 35 …… Link, 36
...... Drive crank, 37 …… motor.

Claims (1)

(57) [Scope of utility model registration request] 1. A louver for adjusting a wind direction is swingably provided at an air outlet, a driven crank is connected to a support shaft of the louver, and one end of a link is pivotally connected to the driven crank.
In the wind direction adjusting device in which the other end of this link is pivotally connected to a drive crank, and the drive crank is rotated by a motor, the louver swings beyond a predetermined angle. A stopper for restricting movement is provided, and the support shaft of the louver and the driven crank are connected via a clutch portion, and the clutch portion includes a plurality of engaging portions that are removably fitted to each other, A wind direction adjusting device, comprising: a spring that elastically presses one engaging portion toward the other engaging portion.