JP2598649Y2 - Driving device for air volume adjustment damper - Google Patents

Description

[Detailed description of the invention]

[0001]

INVENTION The present invention relates to a driving apparatus in the air amount adjusting damper in the duct, and more particularly to a driving apparatus for a damper which can cope with the case caused a headwind to the duct.

[0002]

2. Description of the Related Art Various types of damper driving devices are shown in FIG.
As shown in the figure, the drive side shaft a and the damper shaft b are connected by a joint means in which the projection c and the recess d are fitted to each other. In this case, the two shafts always rotate together and there is no play between the two shafts. Therefore, in order to cope with a case where a backwind is generated in the duct, a damper for preventing a backwind is provided separately from the airflow adjustment damper. Needed. In addition, in the duct
The bearing tube is rotatably supported by the duct at both ends.
The rotating wing is supported by the support in the bearing tube, and
The notch along the longitudinal direction of the bearing tube into which the rotating blade is inserted.
With a certain clearance between the bearing tube and the rotating blades
The rotating blades are provided so as to be able to rotate by an appropriate amount with respect to the bearing tube.
Is also known (Publication No. 61-153861)
Information).

[0003]

[Problems to be Solved by the Invention] Providing a separate backwind blocking damper as in the former case requires extra mounting space, is uneconomical, and requires time and effort for maintenance and management. In addition, in the case of ordinary ventilation, there is another inconvenience such that the blades of the damper for preventing reverse wind vibrate when approaching the blades of the air volume adjusting damper which is causing turbulence, thereby generating noise. The latter also crosses this in a duct
A bearing tube duct rotatably is rotatably supported at both ends, the shaft
The rotary wing 11 is rotatably supported by its support in the receiving tube.
The bearing tube, into which the rotating blade 11 is inserted.
Because of the provision of the notch in the direction, there are the following problems. a, into the hot air flowing through the duct from the notch into the bearing tube
The garbage contained is clogged. b. The movement of the support part with respect to the bearing tube
The crop gradually gets worse. c, the bearing tube has a cutout 1 along its longitudinal direction.
Therefore, wind noise is generated. d. Oil injected into the bearing tube, especially into the bearings at both ends
Fly through the notch. e, a lot of power is required because the wind resistance is large. f Complex shaft with two shafts (support and bearing tube) concentric
Requires receipt.

[0004]

Means for Solving the Problems The present invention solves the above problem.
The purpose of this is to obtain an extinguished device. One end of the blade-side shaft that is integral with the blade to be opened and closed
To protrude, and projecting end portion and a drive-side shaft to be connected thereto, it is projected plate-shaped projections from one axial end Rutotomoni,
Form a recess having a predetermined length in the circumferential direction on the end of the other shaft
When the drive side shaft is in the closed position of the blade,
The protrusion is fitted into and engaged with the concave portion so that the blade does not rotate in the forward direction but can rotate in the reverse direction by an appropriate amount, and the blade-side shaft rotates in the reverse direction on the inner surface of the duct. At this time, a stopper for locking the blade supported by the blade-side shaft at a closed position is provided.

[0005]

The drive device for the air flow adjusting damper according to the present invention, as shown in FIG.
When the blade B is set to the closed position, it is set on one shaft.
The side of the concave part provided on the other shaft abuts on the side of the girder
The rotation of the blade in the forward direction, that is,
Root B shuts off the inside of the duct and stops
The rotation in the reverse direction, that is, the counterclockwise direction is also prevented by C.
Headwind P 'can also be prevented.

[0006] Then, as shown in FIG.
Drive side shaft 1 is moved to the desired position so that B opens to the desired opening angle.
The blade B is pushed by the ventilation,
The blade B rotates to the position where it contacts the surface, and the blade B moves to the desired opening position.
Is kept.

However, in this state, a headwind P 'is formed on the blade B.
When used, the blade B is pushed by this and comes into contact with the stopper C
The duct as shown in Fig. 3 (b).
The inside is shut off. Therefore, the head wind P 'can be prevented.
Wear.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 is a front view of a damper device.
A state is shown in which a blade-side shaft 2 integral with a blade B that closes and opens and closes the inside is connected to a drive-side shaft 1 of a drive device D outside a duct A. In the same figure, C is provided on the inner surface of the duct A,
A blade for locking the blade B in a state of blocking the ventilation in the duct A
Show topper.

[0010] The shaft end of 該駆 dynamic side shaft 1, in the FIG. 2 (b)
As shown, the drive side shaft 1 passes through the diameter line of the drive side shaft 1.
And a plate-shaped projection 3 having a length equal to the diameter of the plate.

A projection provided at a position off the diameter line of the blade-side shaft 2 is provided at the shaft end of the blade-side shaft 2 having the blade B.
Concave portions 4, 4 having a predetermined length in the circumferential direction are provided between 5, 5.
In addition, as shown in (b) of FIG.
When the drive side shaft 1 is operated to the closed position of the blade B,
Abut on the side surfaces of the projections 5, 5 constituting
Does not rotate, but fits in the opposite direction so that it can rotate an appropriate amount.
It was engaged.

FIG. 4 shows another embodiment of the present invention.
The protrusion 3 of the drive side shaft 1 is placed from both outer sides of the end of the drive side shaft 1.
It consisted of plate-shaped projecting pieces 3a, 3a projecting in the diameter direction.
The shaft end of the blade side shaft 2 has a larger diameter than the drive side shaft 1.
A large diameter portion 2a is provided, and is formed along the outer peripheral portion of the large diameter portion 2a.
At the opposing position, the inner surface is inscribed by the outer circumference of the drive side shaft 1.
Arc-shaped fan-shaped projections 5 and 5 are provided.
The recesses 4 and 4 are formed between the projections 3 so that the projections 3 can be fitted therein.
Was. Thus, the concave portions 4 and 4 are formed in the large diameter portion 2a.
This increases the transmission power and increases the fan-shaped projection
The inner peripheral surface of 5, 5 is defined as an arc surface on which the outer periphery of the drive side shaft 1 is inscribed.
By doing so, centering of both shafts 1 and 2 was facilitated.

In each of the above embodiments, the protrusion 3
Although the form of the protrusion 4 is formed into a specific shape so that the contact with the protrusions 5 and 5 forming the end face of the recess 4 can be performed accurately as a surface contact, the present invention is not limited to this form. The shape of the projections 5 is arbitrary, and the recesses 4 are not formed at intervals between the projections 5 and 5, for example, are formed in an arc-shaped groove recessed into the end face of the shaft 2, and the projections 3 are also formed in the groove-shaped recesses. fits may be shaped, further although in the illustrated embodiment shows the one provided two projections 3 and recesses 4, which is good <br/> doctor even if I one by one union.

[0014]

According to the present invention, when the drive side shaft is in the closed position of the blade, the connection between the drive side shaft and the blade side shaft does not rotate in the forward direction but has an appropriate amount in the reverse direction. By inserting and engaging a plate-shaped projection provided on the other side with a recess provided on one shaft so that it can rotate, when the drive side shaft is in the closed position of the blade, the blade blocks the duct. When the drive shaft is rotated to the open position, the blades are opened to a position corresponding to the rotation of the drive shaft, and when a reverse wind is generated in the duct, the blade is pushed by the wind and hits the stopper. to be able to rotate to a position blocking the headwind, separately it is not necessary to provide a headwind blocking damper in the duct, in particular, the blade-side shaft
And a drive-side shaft and a plate-shaped protrusion from one shaft end outside the duct.
At the end of the other shaft to have a predetermined length in the circumferential direction.
When the drive side shaft is set to the closed position of the blade
Does not rotate in the forward direction but can rotate an appropriate amount in the reverse direction
As described above, by fitting the protrusion into the concave portion, the duct
Outside, the blade-side shaft and drive-side shaft can be connected and
The structure of the part is very simple and can be seen in the conventional example
This can cause wind noise and garbage clogging
Or a lot of power is required due to large wind resistance
No need for complicated bearings with two shafts concentric
It has the advantageous effect of:

[Brief description of the drawings]

FIG. 1 is a front view of the damper over

2A is an exploded perspective view of a connecting portion between a drive side shaft and a blade side shaft, and FIG.

FIG. 3 is a sectional view showing an operating state of the damper.

FIG. 4 (A) is an exploded perspective view of a connecting portion showing another embodiment.
(B) a perspective view of the connected state

FIG. 5 is an exploded perspective view of a shaft connecting portion showing a conventional example.

[Explanation of symbols]

1 Drive side shaft 2 Blade side shaft
3 protrusion 4 recess A duct
B blade C stopper D drive

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Showa Sho 61-1553861 (JP, U) Japanese Utility Model Showa 59-38635 (JP, U) Japanese Utility Model Showa 60-162835 (JP, U) Japanese Utility Model Showa 58- 172747 (JP, U) Hikaru 3-21637 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] An end of a blade-side shaft integral with a blade that blocks and opens the inside of a duct is protruded out of the duct, and the protruding end is connected to a drive-side shaft connected thereto. axis is projected plate-like projections from the end Rutotomoni, by circumferentially on the end of the other shaft to form a recess having a predetermined length, when the drive-side shaft and the closed position of the blade, the blade The protrusion is fitted into and engaged with the concave portion so that the blade does not rotate in the forward direction but can rotate in the reverse direction by an appropriate amount, and the blade-side shaft rotates in the reverse direction on the inner surface of the duct. And a stopper for locking the blade supported by the blade-side shaft at a closed position.