JPS6229859Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Background of the Invention] The present invention relates to a blowing mechanism for an air conditioner, and particularly relates to an improvement of a bearing portion that rotatably supports a blowing fan.

[Technical background of the invention and its problems]

Air conditioner 1 as shown in Figures 1 and 2
0, the casing 11 of the air conditioner 10
On the front side, an inlet grill 12, an outlet grill 13,
In addition to being provided with an operation panel 14, etc.,
Inside the casing 11, an indoor heat exchanger 16, an outdoor heat exchanger 17, and blowing fans 18 and 19 that generate airflow passing through these heat exchangers are arranged with a partition plate 15 as a boundary. .

As shown in FIG. 3, the blowing fans 18 and 19 are usually composed of a double-shaft fan such as a cross-flow fan in which both shafts are rotatably supported by bearings, and a motor 20 for rotational driving is attached to one end of the fan. The other bearing 21 is connected to the casing 11.
It can be attached to and detached from a mounting plate 22 fixed therein.

Conventionally, this bearing 21 has a bearing housing having a circular shape or a bearing housing having a partial protrusion on the outer periphery. However, when attaching and detaching the bearing 21, this shape can only be done manually, and the workability is poor and it is not suitable for many bearing replacement operations. In addition, when servicing on-site, there was a problem in that it was hard and difficult to remove. Furthermore, the space between the mounting plate 22 and the casing 11 is relatively narrow, making it difficult to reach into the interior.

[Purpose of invention]

The present invention was developed with these points in mind, and is an air conditioner equipped with a double-shaft fan rotation support bearing that has a bearing housing shape that allows for easy and reliable attachment and detachment. The purpose is to provide a ventilation mechanism.

[Summary of the idea]

In the present invention, the shape of the bearing housing of the bearing on the removable side has six planes substantially parallel to the axis, and these six planes are arranged in a substantially hexagonal shape with the axis as the center. This feature makes it possible to reliably and easily attach and detach the bearing using a tool such as a hexagon spanner.

[Example of idea]

Embodiments of the present invention will be described below with reference to FIGS. 4 to 6.

4 and 5 are perspective views showing the external appearance of the bearing according to the present invention. FIG. 4 is a view of the bearing 31 seen from above, and FIG. 5 is a view of the bearing 31 seen from the back side. Moreover, FIG. 6 is a sectional view taken along the line of FIG. 4. The bearing 31 is located at the shaft end 1 of the double-shaft fans 18 and 19.
8a and 19a (see FIG. 3) are inserted and rotationally held therein, and a bearing housing 33 holds this bearing metal 32 from the outside. As shown in the figure, the bearing housing 33 has six flat surfaces 34 that are approximately parallel to the axis, and a head 35 that has a shape in which the six flat surfaces 34 are arranged approximately in a hexagonal shape with the axis as the center; The mounting flange portion 37 is formed integrally with the head portion 35 and has an engaging portion 36 that is inserted into and engaged with the mounting hole 22a of the mounting plate 22 (see FIG. 3). Further, the bearing housing 33 is made of an elastic rubber material.

Next, the operation of this embodiment having such a configuration will be explained.

In the air blowing mechanism of the air conditioner according to this embodiment, when one of the bearings 31 of the dual shaft fans 18 and 19 is installed and removed, the bearing housing 33
This can be done manually by grasping the head of the head, but it can also be removed or installed by rotating it using a JIS standard hexagon wrench or box wrench. Therefore, as shown in FIG. 7, even if the space 38 between the mounting plate 22 and the casing 11 is narrow, a jig 39 such as a hexagon spanner can be inserted from outside the casing 11 and operated. Therefore, it is possible to easily attach and detach the bearing 31. Further, by using the jig 39, even if the fitting is tightly fitted, it can be removed and a strong tightening force can be applied. Furthermore, since the head 35 of the bearing housing 33 has a hexagonal shape, it is also strong.

FIGS. 8 to 10 show one embodiment of the structure of the outlet grille 13 of the air conditioner 10. FIG. The air outlet grille 13 is comprised of a large number of wind direction plates 42 swingably attached to a lattice frame 41 fixed to the front side of the casing 11. That is, holding holes 43 are formed at the ends of the lattice frames 41 arranged in parallel at predetermined intervals, and a support shaft 44 attached to the rear end of the wind direction plate 42 is rotated with respect to the holding holes 43. By being movably inserted, a large number of wind direction plates 42 are swingably attached. Furthermore, a notch 45 is formed at the tip of the large number of wind direction plates 42, and within this notch 45,
A pair of protrusions 4 in a direction perpendicular to the direction of the notch 45
6a and 46b are attached so that their tips face each other with a predetermined distance apart. Reference numeral 47 denotes a connecting plate that connects a large number of wind direction plates 42 to each other, and notches 48 are provided on the long end side of this connection plate 47 at the same intervals as the array intervals of the wind direction plates 42. As shown in detail in FIG. 10, this notch 48 is provided with a pair of protrusions 49 on the entrance side, and the entrance is narrower than the inner part. If such a connecting plate 47 is inserted from a direction perpendicular to the protrusions 46a and 46b so that the respective notches 45 and 48 are aligned, the pair of protrusions 46
a, 46b are elastically deformed and fitted into the notches 48 of the connecting plate 47, so that the connecting plate 47 and the wind direction plate 42 can be rotatably coupled.

In this way, a notch 45 is provided approximately in the center of the tip of the wind direction plate 42 in parallel with the lattice frame 41, and a pair of protrusions 46a and 46b provided in this notch 45 are fitted into the notch 48 of the connecting plate 47. Compared to the conventional structure in which the connecting plate is attached to the upper or lower end of the wind deflecting plate, the shape of the wind deflecting plate is simpler, there are fewer restrictions on the shape, and the connecting plates can be placed optimally. , the force applied to the wind direction change operation knob (not shown) can be smoothly transmitted.
Accurate movements can be performed. Further, since the wind direction plate and the connecting plate can be set symmetrically, the design and assemblability are improved. Furthermore, as shown in FIG. 10, since the center of the notch 48 provided in the connecting plate 47 is not in the center of the connecting plate 47 but in an offset position, the dimension of the notch 45 in the wind direction plate 42 becomes smaller. A decrease in the effective area of the wind direction plate 42 is prevented.

Next, FIGS. 11 and 12 are diagrams showing other embodiments of the outlet grill. In this embodiment, a through hole 55 is provided inside the outer edge of a large number of wind direction plates 52, and a pair of protrusions 56a and 56b are installed in the through hole 55 so as to face each other. Further, a wind direction plate 52 is provided on the long end side of the connecting plate 57.
Recesses 58 are provided at the same spacing as the arrangement interval of the recesses 58, and the recesses 58 are narrower at the entrance than at the inner part by providing a pair of protrusions 59 on the entrance side. The connecting plate 5 is connected to the wind direction plate 52 having such a configuration.
7 is inserted through the through hole 55 from a direction perpendicular to the surface of the wind direction plate 52, and then the projection 56 is inserted by pushing the connecting plate 57 toward the rear of the wind direction plate 52.
a, 56b and the recess 58 are fitted and connected, and a large number of wind direction plates 52 can be connected to each other by one connecting plate 57. Note that the reference numeral 54 indicates the wind direction plate 5.
This is a shaft for attaching a lattice frame (not shown) provided at the rear end of 2. According to this embodiment, the position of the through hole 55 can be optimally selected in relation to the shape and position of the operating knob 51, and the operating force of the operating knob 51 can be smoothly transmitted to the entire wind direction plate 52. be able to.

[Effect of idea]

According to the present invention, since the head of the bearing housing is hexagonal, it is possible to attach and detach the bearing using JIS standard jigs. It can increase the power of time. Therefore, the bearing can be easily removed during on-site service. Furthermore, if the bearing housing is made of a rubber material, it is possible to obtain a tightening holding force after installation due to its elasticity, and also to have a noise absorbing effect. Further, the head portion of the bearing housing and the mounting flange portion can be integrally molded and manufactured at low cost.

In this embodiment, an example of a bearing for a cross-flow fan has been described, but the present invention can also be used in a blowing mechanism of an air conditioner equipped with a double-axis fan having a similar configuration.

[Brief explanation of drawings]

Figure 1 is an external view showing an example of an air conditioner, Figure 2
The figures are a sectional view taken along the line shown in FIG. 1, FIG. 3 is an exploded perspective view showing an example of mounting a double-shaft fan, FIGS. 4 and 5 are external perspective views of the bearing according to the present invention, and FIG.
Fig. 7 is a partial perspective view showing how the bearing according to the present invention is installed or removed;
The figure is a sectional view showing the structure of the outlet grill of an air conditioner, FIG. 9 is an exploded perspective view showing the structure of the outlet grill shown in FIG. 8, FIG. 10 is a partially enlarged plan view of the connecting plate, and FIG. 11 12 is an exploded perspective view showing another structure of the outlet grill of the air conditioner, and FIG. 12 is a partially enlarged perspective view showing the connecting portion between the wind direction plate and the connecting plate of the outlet grill shown in FIG. 11. 18, 19...Double shaft fan, 31...Bearing, 3
3...Bearing housing, 39...Jig and tool, 42,
52... Wind direction plate, 47, 57... Connection plate.

Claims (1)

[Claims for Utility Model Registration] 1. In a blowing mechanism for an air conditioner equipped with a double-shaft fan whose ends are rotatably supported by bearings, one of the bearings is removable and the bearing housing is A blower mechanism for an air conditioner, characterized in that it has six planes substantially parallel to an axis, and these six planes are arranged in a substantially hexagonal shape with the axis as the center. 2 Utility model registration claim 1 characterized in that the bearing housing is made of rubber material
Air blowing mechanism described in section.