JPH04327734A - Damper device of air conditioner - Google Patents

Abstract

PURPOSE:To prevent unnatural force from being exerted on a damper driving motor when the damper makes contact with a damper frame and determine a closed position of the damper irrespective of the stepped position of the damper driving motor. CONSTITUTION:A coupling plate 1 couples a damper 101 and a lever 105 mounted on a damper driving motor 104 through a coupling pin 106. One end of a hole through which a connection pin 106 of the coupling plate 1 is passed is formed into a slot 3. Hereby, unnatural force is prevented from exerting on the damper driving motor 104 even though the damper driving motor 104 is stopped slightly delayed when the damper 101 makes contact with the damper frame 103 and is therefore not moved. Further, the damper 101 makes contact with the damper frame 103 owing to the force of a spring hinge 2 even though the damper driving motor 104 is stopped, slightly earlier before the damper 101 makes contact with the damper frame 103, and hence the damper 101 is securely closed.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a damper device for an air conditioner that opens and closes ventilation air passages, etc. of the air conditioner.

0002

BACKGROUND OF THE INVENTION In recent years, air conditioning in office buildings and the like has been required not only to provide simple cooling and heating, but also to improve air quality through ventilation.

Conventionally, a damper device for ventilation in this type of air conditioner has been constructed by connecting a lever attached to a damper driving motor and a damper attached to a damper frame via a hinge using a connecting plate having simple round holes at both ends. The configuration was such that they were connected using connecting pins. The configuration will be described below with reference to FIGS. 4 and 5.

As shown in the figure, a hinge 1 is attached to the damper frame 103.
An L fitting 108 having a screw hole for attaching a connecting pin 106 is fixed to the damper 101 which is attached via the L-metal fitting 108 . Further, the damper frame 103 has a support stand 11.
0 is fixed, and a lever 105 is attached to a damper drive motor 104 that is attached to this support stand 110 with a screw 109. At the tip of the lever 105, there is also a screw hole 106a for attaching a connecting pin 106. It is provided. The driving force of the damper driving motor 104 is transmitted to the lever 105 of the L fitting 108 by attaching a connecting plate 107 having a round hole slightly larger than the connecting pin at both ends for passing the connecting pin 106 through the connecting pin 106. be done. Further, the damper frame 103 is screwed into a ventilation air passage provided in the air conditioner main body 3.

In the above configuration, the damper driving motor 10
4 rotates, the driving force is transmitted from the lever 105 to the damper 101 via the connecting plate 107, and the damper 101 opens and closes using the hinge 102 as a fulcrum.

[0006]

[Problems to be Solved by the Invention] In such a conventional damper device for an air conditioner, the screw 109 of the damper drive motor 104 can cause misalignment of the mounting position due to the screw fastening or fixation of the support base 110 to the damper frame 103. After the damper 102 contacts the damper frame 103 due to various assembly variations such as misalignment of the L fitting 108 fixed to the damper 101 and misalignment of the hinge 102, the damper 101 is further removed from the damper frame 103. A situation may occur in which the damper drive motor 104 is in a locked state and eventually destroyed.

The present invention solves the above-mentioned problems, and provides a damper device for an air conditioner that can prevent troubles such as destruction due to locking of the damper drive motor caused by variations in assembly of each component of the damper device. is intended to provide.

[0008]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a lever attached to a damper driving motor;
A damper frame that is screwed into an opening in the ventilation air passage of an air conditioner has a damper that is attached via a spring hinge, and a round hole and an elongated hole at both ends for passing a connecting pin to connect to this damper. A connecting plate is provided, and the lever and the damper are connected by the connecting pin.

[0009]

[Operation] According to the above-described structure, when the damper moves from the fully open state to the closed position, the damper starts operating in the closing direction in conjunction with the rotation of the damper drive motor mainly by the force of the spring hinge. . When the damper contacts the damper frame and is completely closed, the connecting pin that connects the connecting plate and the lever is free in the elongated hole of the connecting plate, so the damper Even if the timing when the damper frame comes into contact with the damper frame due to the force of the spring hinge and stops moving, and the timing when the damper drive motor electrically stops may deviate slightly due to variations in the assembly of the damper device, the damper drive motor will not be able to move due to the force of the spring hinge. It is possible to prevent the application of force.

0010

[Example] An example of the present invention will be described below with reference to FIGS. 1 to 4.
This will be explained with reference to. Note that the same reference numerals as those given to the conventional example indicate the same components, and the explanation will be omitted.

As shown in the figure, the damper 101 has a spring hinge 2.
The connecting plate 1 attached to the lever 105 by a connecting pin 106 is connected to the damper 101 by connecting the connecting plate 1 attached to the damper frame 103 via a connecting pin 106 and transmitting the driving force of the damper driving motor 104 to the damper 101.
L fitting 1 for connection with connection pin 106 on 01 side
08 is fixed. The connecting plate 1 is provided with a long hole 3 on the lever 105 side and a simple round hole 1b on the L fitting 108 side for passing the connecting pin 106 therethrough.

In the above configuration, the damper driving motor 1
04 is electrically controlled to stop when the damper 101 is fully open and fully closed. When the damper 101 is opened from the closed state, the damper drive motor 104 rotates in the direction shown by the arrow A, and this rotational force moves the connecting plate 1 by the connecting pin 106 fixed to the lever 105. It is pushed through the connecting pin 106 on the L fitting 108 side of No. 1 and stops at the same time as the damper drive motor 104 stops electrically at the open position. Next, when the damper 101 moves from the open position to the closed position, it begins to move in the closing direction in conjunction with the force of the spring hinge 2 and the movement of the connecting plate 1 operated by the damper drive motor 104. In the position where the damper 101 contacts the damper frame 103 and is in the closed state, the connecting pin 106 connecting the connecting plate 1 and the lever 105
becomes free in the elongated hole 3 of the connecting plate 1, and at the same time the damper drive motor 104 is electrically stopped.

As described above, according to the damper device for an air conditioner according to the embodiment of the present invention, when the damper 101 comes into contact with the damper frame 103 and stops moving, the damper driving motor 10
Even if the timing at which the damper 4 stops electrically is delayed a little and you try to pull the damper 101 further, the damper drive motor 10
4 can be prevented from being applied with excessive force.

[0014]

As is clear from the above embodiments, according to the present invention, the timing at which the damper contacts the damper frame and the timing at which the damper drive motor electrically stops due to variations in the assembly of each component of the damper device. Even if the damper is misaligned and you try to forcefully pull the damper in, the elongated hole in the connecting plate prevents the damper drive motor from being damaged due to excessive force, and even if the damper drive motor stops early, the spring It is possible to provide a damper device for an air conditioner that is effective in ensuring a properly closed state by bringing the damper into contact with the damper frame by the force of the hinge.

[Brief explanation of drawings]

FIG. 1 is a perspective sectional view of a damper device for an air conditioner according to an embodiment of the present invention.

[Figure 2] Enlarged view of the connecting plate part of the damper device of the air conditioner

[Figure 3] Diagram of how the damper device of the air conditioner is assembled into the air conditioner body

[Fig. 4] A perspective cross-sectional view of a damper device of a conventional air conditioner.

[
Figure 5: Enlarged view of the conventional connecting plate part

[Explanation of symbols]

1 Connecting plate 1b Round hole 2 Spring hinge ３　　　　　　　Slot hole 101 Damper 103 Damper frame 104 Damper drive motor 105 Lever 106 Connection pin

Claims (1)

[Claims] [Claim 1] A damper that is attached via a spring hinge to a lever attached to a damper drive motor and a damper frame that is screwed to an opening provided in a ventilation air passage of an air conditioner;
A damper device for an air conditioner, comprising a connecting plate having a round hole and an elongated hole at both ends, through which a connecting pin for connecting to the damper is passed, and a lever and a damper are connected by the connecting pin.