JPS596191Y2 - damper device - Google Patents

Description

[Detailed description of the invention] The present invention relates to a damper device, such as an inside/outside air switching damper that switches the conditioned air introduced into the air conditioner into vehicle interior air or vehicle exterior air in an automobile air conditioner, and an air conditioner. It is effective to use it as a temperature control damper that controls the amount of conditioned air that passes through, or an outlet switching damper that switches the outlet through which conditioned air is blown out.

As shown in FIG. 1, the conventional damper device has a damper 2a.
is fixed by a rotating shaft 2b and a screw 2d, and this rotating shaft 2b passes through both side surfaces 1d of the case, and an operating link 2C is fixed to one end of the rotating shaft 2b that passes through it by a screw 2e. It had become.

However, in this conventional type, the rotational support of the damper 2a is achieved by simply passing the rotational shaft 2b through the case side surface 1d, which has the disadvantage that the damper 2a rattles within the case and generates abnormal noise. was there.

Furthermore, in the conventional model, the rotating shaft 2b was always used, which increased the number of parts and weight.
There is also the disadvantage that the number of assembly steps such as fixing the screws 2d and 2e increases, resulting in poor assembly workability.

The present invention was devised in view of the above points, and an object thereof is to provide a damper device in which the damper rotates well within the case without rattling, and the ease of assembly is greatly improved.

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

In FIG. 2, numeral 1 denotes a case forming a conditioned air passage of an automobile air conditioner, and is made of a resin material such as polypropylene.

Reference numeral 3 designates an inside/outside air switching damper which is disposed within the case 1 and switches the conditioned air introduced into the case 1 into vehicle interior air and vehicle exterior air.

Reference numeral 4 denotes a pusher rotatably fitted on one side surface 1a of the case 1; 5 is an operation plate rotatably fitted on the other side surface 1b of the case 1 facing the pusher 4; both members 4, 5 are both made of a highly elastic resin material such as polyacetal.

The ends of both sides 3a of the damper 3 are held between the members 4 and 5, and an operation link portion 5a is integrally formed on the operation plate 5 on the outside of the case 1. The operating plate 5, the damper 3, and the pusher 4 rotate together in response to the operating force.

FIG. 3 and FIG. 4 are views showing how the pusher 4 is attached. As shown in the figure, the pusher 4 has a circular locking bottom portion 4a that locks onto the outer surface of the case side surface 1a and comes into sliding contact with the side surface 1a; A damper side surface 3a is formed in the center of this locking bottom portion 4a.
A damper fitting part 4b into which the damper fitting part 4b is fitted, and a damper fitting part 4b formed in the peripheral part of the locking bottom part 4a at a predetermined gap 4C away from the damper fitting part 4b and rotatably inserted into the collared hole part 1C of the case side surface 1a. It is shaped like a case connecting part 4d to be connected.

More specifically, the damper fitting part 4b is composed of two plate-like members that sandwich the damper 3, and the inner surface of the tip end of the damper fitting part 4b is tapered so that the damper 3 can be easily inserted. It has become so.

Further, the damper fitting portion 4b has a larger protrusion amount than the case connecting portion 4d so as to have a large fitting area with the damper 3.

The case connecting part 4d has a cylindrical shape with two notches 4d', and the outer periphery of the distal end thereof is tapered so that it can be easily inserted into the collared hole 1C.

Furthermore, a fitting groove 4e corresponding to a part of the collar length of the collared hole 1C is formed on the outer periphery of the case connecting portion 4d, and when the collared hole 1C is fitted into the fitting groove 4e, , the pusher 4 is prevented from falling out from the side surface 1a of the case.

On the other hand, the operation plate 5 basically has the same shape as the pusher 4, but has an operation link part 5a integrally formed on the outside of the locking bottom part 5b, which controls the movement of the operation lever disposed inside the vehicle. It is designed to be rotated by receiving it via an operating wire or the like.

In the damper device having the above structure, the damper 3 is first inserted into the case 1, and then the pusher 4 and the operation plate 5 are inserted into the case 1.
are inserted into the collared hole part 1C one at a time or both at the same time, and the damper side surface 3a is fitted into the damper fitting part at the same time to perform the assembly.At this time, the insertion state of the pusher 4 (operation plate 5) is as follows.

That is, insert the pusher 4 through the collared hole 1C, first position the tip of the damper fitting part 4b on the damper side surface 3a, and then further insert the pusher 4 in this state to close the damper 3.
At the same time, the tip of the case connecting part 4d is positioned in the hole 1C, and finally the pusher 4 is inserted until the locking bottom part 4a is locked to the case side surface 1a to complete the assembly of the pusher 4.

Therefore, according to the present invention, the push 4 (operation plate 5
), the insertion position of the pusher 4 can be easily moved as long as the damper fitting portion 4b and the taper 3 are positioned.

Moreover, according to the present invention, since a predetermined gap 4C is provided between the damper fitting part 4b and the case connecting part 4d, the case 1
Push 4 (
This is done by the elastic force of the operation plate 5), and therefore, complicated work such as screwing is unnecessary, making assembly extremely easy.

Furthermore, in the assembled state, the collared hole 1C of the case 1 fits into the fitting groove 4e of the pusher 4 (operating plate 5), so the pusher 4 (operating plate 5) is rotationally supported by the case 1 well. Therefore, the damper 3 no longer rattles within the case 1.

Note that although the above-mentioned example is a desirable embodiment of the present invention, the present invention should not be limited to this one embodiment, and there are various other embodiments.

That is, as shown in FIGS. 5a and 5l), the end of the damper 3 may be corrugated, and the corrugated portion 3b may be held between the damper fitting portions. In this case, the corrugated portion 3b may be deformed. With the addition of the elastic force associated with this, the connections between the damper 3, the pusher 4, and the operation plate 5 are further strengthened.

In addition, in order to further strengthen the connection between the damper 3 and the pusher 4 and the damper fitting portion of the operation plate 5, a sixth
As shown in Figures a and l), a curling part 3C is formed at the end of the damper 3, and a protrusion 4b' that fits into the groove 3c' of the curling part 3C is provided in the damper fitting part 4b. ,
The projection 4b' and the groove 3C' may be used for locking.

Similarly, as shown in FIG.
, and the damper fitting part 4b is also provided with an uneven part 4b'' corresponding to the uneven part 3d, so that both the uneven parts 4b'',
3d may be combined for locking.

Furthermore, in the above-mentioned embodiment, the damper device of the present invention was used as an inside/outside air switching damper of an automobile air conditioner, but the present invention is also applicable to temperature control that controls the amount of conditioned air passing through a conditioner (heater). It can be used as a damper or as an outlet switching damper for switching the outlet, and furthermore, it can be widely used as a damper for controlling air flow in the case 1 in addition to automobile air conditioners.

As explained above, in the device of the present invention, the damper is supported by the push and operation plates rotatably connected to the side of the case, so there is no need to connect the rotary shaft of a separate member to the damper, and the number of parts is reduced. This has the excellent effect of reducing costs and weight, and greatly simplifying assembly.

Particularly, in the present invention, a cylindrical case connection part having a notch is formed in each of the push and operation plates, and this case connection part? Since the damper fitting part is formed independently on the inner circumferential side with a predetermined gap, the connection between the push and operation plate and the hole in the case is performed by the cylindrical case connection part, and the push and The operation plate and the damper can be connected through the damper fitting portion, and therefore the dimensions of the two connecting portions do not affect the mutual functions at all and can be set independently. Dimension control during manufacturing becomes extremely easy,
This has the excellent effect of reducing manufacturing costs and reliably preventing backlash in each connecting part by fully utilizing the elasticity of the resin.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a conventional damper device, FIG. 2 is a sectional view showing an example of the damper device of the present invention, FIGS. 3 and 4 are sectional views showing the push shown in FIG. The figure shows a cross section taken along the line A-A in FIG. 3. FIGS. 5 a, b, 6 a, l), and 7 0 a, l) show the main parts of other examples of the damper device of the present invention, respectively. FIG. 2 is a cross-sectional view and a front view. 1... Case, 1a, 1b... Case side, 3... Damper, 4... Push, 5... Operation plate.

Claims (1)

[Scope of utility model registration request] This is a damper device that controls the flow direction of air flowing inside the case, and has a cylindrical case connection part with a notch in the push made of highly elastic resin, and this cylindrical case connection part. A damper fitting part is formed on the inner peripheral side of the part with a predetermined gap therebetween, and the pusher is rotatably connected to a hole in one side of the case by the cylindrical case connecting part, and The operating plate, which rotates when receiving operating force from the outside, is made of highly elastic resin, and this operating plate also has a cylindrical case connecting part and a damper fitting part similar to the cylindrical case connecting part and damper fitting part. A damper fitting portion is formed, and the operation plate is rotatably connected to a hole in the other side surface of the case by the cylindrical case connection portion, and the push damper fitting portion and the operation plate are connected to each other. A damper device, characterized in that the end portions of both side surfaces of a plate-shaped damper disposed within the case are integrally supported by a damper fitting portion.