JPH01204817A - Device for opening/closing shutter of ventilator - Google Patents

Abstract

PURPOSE:To securely prevent a shutter from returning unexpectedly by a method wherein a shutter located inside a duct body is opened and closed by a driving unit according to an operation amount in a manual operation unit and operation of the manual operation unit is restrained by a restraining means unless the manual operation unit is being operated. CONSTITUTION:A knob 29 comprising a manual operation unit 35 is subjected to pressure against a spring 39, a pinion gear 33 is retracted and an engaging tooth 37 comprising a restraining means separates from a fixed tooth 41 to be released from its restrained state. Therefore, when the knob 29 is rotated normally and reversely, a rack 19 which comprises a shutter driving unit 13 engaged with the pinion gear 33 makes reciprocating motion, to drive a driving lever 15. Since, as a result, a shutter shaft 7 is driven by the driving lever 15, a shutter 9 is opened and closed so that various blown air modes can be obtained from the air outlet 3 of a duct body 1. At this time, a torque acting on the shutter shaft 7 is received by the pinion gear 33 which is being restrained, securely preventing the shutter from returning.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) This invention relates to a ventilator shutter opening/closing device suitable for automobiles.

(Prior Art) Conventionally, as a ventilator for blowing air conditioned by an air conditioner into a vehicle interior, for example,
The one described in Publication No. 12 is known, and its specific structure is shown in FIGS. 6 and 7.

That is, a pair of shutters 107 are provided inside a duct body 103 having an air outlet 101, and are opened and closed using a shutter shaft 105 as a fulcrum.
The structure is such that the shutters 107, 107 can be opened and closed by operating the manual lever 109 in the direction of the arrow.

(Problems to be Solved by the Invention) As described above, the shutter 107 is opened and closed by operating the manual lever 109, and depending on the opening degree of the shutter 107, for example, the mild wind blown out from the entire area of the air outlet 101 and the Spot wind modes that are blown out in a concentrated manner from approximately the center of the outlet 101 are obtained.

In this case, to set the spot style mode, shutter 1
07 and 107 are rotated inward from the same position N (dashed line in Figure 7) to narrow the passage, the wind pressure acting on the shutters 107 and 107 increases, and the shutters 107 and 107 There is an action to return to the fully open position. For this reason, a click mechanism 113 that constantly acts on the manual lever 109 is provided to prevent the shutter 107 from returning.

Although the click mechanism 113 provides a sense of moderation when operating the manual lever 109, it creates resistance during operation, making the operation heavy and giving a poor operating feeling, which is not desirable in terms of operability.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a ventilator shutter opening/closing device that can reliably lock the shutter at a predetermined opening position and is favorable in terms of operability.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention provides an air blowing mode in a duct body provided in a ventilation passage of an air conditioner and having an air outlet. In a ventilator equipped with an adjustable shutter that can be opened and closed, a manual operation section provided outside the duct body, and a shutter drive section that operates in conjunction with the manual operation section and opens and closes the shutter in accordance with the amount of operation of the manual operation section. and a restraining means that normally restrains the manual operation section and allows the manual operation section to operate when the manual operation section is released from the restraint.

(Function) In such a ventilator, the shutter can be opened and closed by first performing an initial operation for releasing the restraint using the manual operating section, and then operating the ventilator in the released state. When the hand is released after the operation is completed, the manual operation section is restrained by the restraining means, and a predetermined blowing mode is obtained. In this case, for example, when in the spot wind mode, if a large wind pressure acts on the shutter, the shutter will try to return to the fully open position, and the force generated at that time will be transmitted through the shutter drive unit to the manual operation unit that is in a restrained state. Since the receiver is stopped by the shutter, the shutter does not return. Furthermore, since there is no resistance during operation, the manual operation section can be operated smoothly.

(Embodiment) Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings of FIGS. 1 to 5.

In the figure, reference numeral 1 indicates a duct main body provided in a ventilation passage of an air peace device (not shown), and a large number of loopers 5 are provided in a front air outlet 3.

Inside the duct body 1, a pair of shutters 9, 9, which can be opened and closed in WU, are provided respectively, with the shutter shaft 7 serving as the vertical axis as a fulcrum, and the upper and lower ends are made of cloth and lightly contact the upper and lower surfaces of the inside of the duct body 1, respectively. .

As shown in FIG. 3, the shutters 9 can be rotated from a fully open position °a to a fully closed position 1c.

As a result, at the fully closed position lIC, the airflow amount becomes zero, and at all positions 1a of the shutter 9, mild wind is blown out from the entire area of the air outlet 3, and at the fully open and fully closed positions @a,
At approximately the midpoint Mb of C, concentrated spot wind modes blown from the central portion of the Suita mouth 3 are obtained.

On the other hand, the left and right shutter shafts 7, 7 are integrally coupled with transmission shafts 11, 11 on the bottom side of the duct body 1, and the transmission shafts 11, 11 are one ends of drive levers 15, 15 that constitute the shutter drive section 13. is fixed to. Drive lever 1
The other ends of the racks 19 and 15 move in an arc with the shutter shaft 7 as a fulcrum, and the bins 17 that rise from the other ends are elongated holes 21 and 2 that are bored at the ends of the racks 19 and 19 that are vertically opposed to each other.
It is mated with 1. The long holes 21 and 21 are the racks 19 and 1.
This prevents unreasonable loads from acting on the bins 17, which move in an arc during the reciprocating motion of the bins 9.

The racks 19, 19 are provided with guide grooves 23, 23 on both sides, and the guide grooves 23 are slidably engaged with the guide rails 25. The guide rail 25 is provided inside a case 27 formed on the bottom surface of the duct body 1.

On the other hand, a pinion gear 33 is engaged with the vertically opposing racks 19, 19, which can be rotated forward or reverse by a drive shaft 31 having a knob portion 29.
3. Manual operation section 3 with drive shaft 31 and knob section 29
5 are configured.

Engagement teeth 37 are formed on one side of the pinion gear 33 that is on the drive shaft 31 side, and the engagement teeth 37 are always engaged with the fixed teeth 41 by a biasing spring 39 . This restricts the movement of the pinion gear 33, that is, the movement (rotation) of the drive shaft 31. Note that the drive shaft 31 has engagement teeth 37 that directly mesh with the fixed teeth 41.
It is also possible to provide a manual operation section 35 with the drive shaft 31 and the knob section 39.

Fixed teeth 41 that removably engage with the engagement teeth 37 are fixed to the case 27. Further, the biasing spring 39 is set within the case 27, and one end acts on one side of the pinion gear 33.

In the ventilator constructed as described above, the operation of opening and closing the shutters 9 will be described. As shown in FIG. 5, an initial operation is performed in which the grip portion 29 is held and pressed against the biasing spring 39.

As a result, the pinion gear 33 moves backward and the engagement teeth 37 are released from the fixed teeth 41, so if the knob 29 is rotated forward or reverse, the rack 19.
The rack 19 smoothly reciprocates (arrow A in FIG. 2) due to the relationship of the pinion gear 33. The reciprocating movement of the racks 19, 19 is controlled by the shutter shafts 7, 7 via drive levers 15, 15.
The shutters 9, 9 are opened and closed from the fully open position a to the fully closed position C to obtain various blowout modes. In this case, for example, if the shutters 9 are set to an intermediate position and released, the engaging teeth 37 will be moved to the fixed teeth 4 by the biasing spring 39.
1, while providing a concentrated spot wind mode.

If large wind pressure acts on the shutters 9 and 9 in this spot wind mode, this wind pressure will cause the shutters to
・The shutter 9 attempts to return to the fully open position a, and the rotational force generated in the shutter shaft 7 at that time is stopped by the pinion gear 33 which is in a restrained state via the drive lever 15 and the rack 19, and the shutter 9 does not return. This will allow you to obtain stable spot winds. Although the manual operation section 35 is of a button type that is pressed to release the restraint, it may be of a pull type.

[Effects of the Invention] As explained above, according to the shutter opening/closing device of the present invention, the movement of the shutter is restricted by the restraining means when the setting of the shutter is completed, so even if large wind pressure acts on the shutter, the shutter returns to the fully open position. can be reliably prevented.

Further, since the restraint state of the restraint means can be released by a simple release operation, smooth opening and closing operations are possible, and operability can be improved.

[Brief explanation of the drawing]

Fig. 1 is a cutaway side view of a ventilator embodying the present invention, Fig. 2 is a schematic perspective view of the shutter opening/closing device, Fig. 3 is an explanatory diagram of the shutter operation, and Figs. 4 and 5 are the manual operation section. The explanatory drawing, FIG. 6 is a perspective view of a conventional ventilator, and FIG. 7 is a cutaway plan view of the same. 1...Duct body 3...Air outlet 9...Shutter 13...Shutter drive section 35...Manual operation section agent Patent attorney Yasuo Miyoshi Figure 4 Figure 5 Figure 6 Figure 7 figure

Claims (1)

[Claims] A ventilator comprising an openable and closable shutter for adjusting a blowout mode in a duct body provided in a ventilation path of an air conditioner and having a blowout port, comprising: a manual operation section provided outside the duct body; and a manual operation section. a shutter drive unit that opens and closes the shutter in accordance with the amount of operation of the manual operation unit; and a restraining means that normally restrains the manual operation unit and allows the manual operation unit to operate when the manual operation unit is released from the restraint. A ventilator shutter opening/closing device comprising: