JPH0452610Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the structure of the mounting part of the guide vane, particularly the horizontal vane, of a blow-off grill in an air conditioner such as a hot-air heater.

[Conventional technology]

Figure 3 shows the appearance of the warm air heater. In the figure, A at the bottom of the casing is a suction port, and B at the top is a blowout port (blowout grille). Inside the casing, from the bottom, there are a convection fan, a burner, a combustion chamber,
A heat exchanger is installed, and a convection fan connects suction port A.
The indoor air sucked in from the combustion chamber exchanges heat with the high-temperature gas generated by combustion in the heat exchanger, is heated, and is blown out from the outlet B into the room.

In such a warm air heater, the upper blower outlet B is horizontally connected to the vertical blades 1, which are constructed separately from each other, as disclosed in Japanese Utility Model Publication No. 62-9474, Japanese Utility Model Publication No. 59-2434, etc. It is equipped with blades 4..., vertical blades 1
... is arranged inside (inside the machine), and the horizontal blades 4 ... are arranged outside. The air blowing direction from the air outlet B is determined by the vertical and horizontal blades 1..., 4.
It is adjusted vertically and horizontally by changing the direction (angle) of...

Here, the mounting structure of the horizontal blade 1 is as follows:
As shown in Figure 4 (A), mounting plates 2, 2 are placed along both left and right sides of the front of the grill (see Figure 3).
Mounting shafts 6 provided near both ends of the horizontal blades are fitted into the upper engaging pieces 5 to be mounted. The engagement piece 5 is made of resin and is fitted and held using its elasticity. In this case, the inner diameter d of the fitting portion 50 of the engagement piece 5 is set such that the fitted mounting shaft 6 does not move inadvertently due to the weight of the blade, etc.
It needs to be slightly smaller than the shaft diameter D, and the width S of the fitting opening 50' needs to be about 2/3 of the shaft diameter D.

[Problem that the invention attempts to solve]

However, if the dimensions of the engagement piece 5 are taken in this way, when the mounting shaft is fitted, the base 5 of the fitting part 50
0" may break due to excessive force.

Therefore, at present, as shown in Figure B,
The mounting shaft 6 is made flat, and after being put into the fitting part 50 horizontally, it is raised vertically.

With this structure, there is no need to forcibly expand the fitting opening 50' during installation, and breakage can be prevented. But on the other hand,
It is difficult to attach a stopper to regulate the angle of the blade after assembly. Without a stopper, the blades would be able to move freely, which could cause the entire air outlet to be blocked, creating a serious possibility of abnormal overheating inside the machine.

Also, when the flat shaft is turned sideways, the blade surface becomes vertical and the blades interfere with each other, so it is necessary to install the blades in order from top to bottom or in the opposite direction. This is extremely inconvenient, such as when trying to replace only one of a large number of sheets lined up.

The present invention provides a structure for attaching a horizontal blade without worrying about damage to the connecting part when installing the horizontal blade, limiting the blade angle within an appropriate range, and not prescribing the order of attaching and removing the blades.

[Means for trying to solve problems]

In the horizontal blade mounting structure of the present invention, as shown in FIGS. 1 and 2, a mounting shaft 12 having a stopper piece 120 projecting rearward is provided on the rear end side near both left and right ends of the horizontal blade 1.

On the other hand, on the resin mounting plates 2, 2 attached along both left and right sides of the front surface of the outlet grille, engaging pieces 20 are attached to the mounting shaft 12 at a predetermined pitch in the vertical direction.
are integrally formed, and each engagement piece 20 has a grip portion 20a that tightly fits and grips the outer periphery of the mounting shaft 12 and has an opening 20a' on the front side for attachment and detachment.
Furthermore, a notch 20b is provided at the bottom of the inner surface of the gripping portion to absorb deformation during attachment and detachment, and a recessed portion 20c is formed along the circumferential direction to define the angle adjustment width of the blade corresponding to the stopper piece 120. be done.

[Effect]

In the mounting structure according to the present invention, firstly, when the blade 1 is mounted or removed, the deformation of the engagement piece 20 as the mounting shaft 12 passes through the front opening 20a'
It is absorbed not only by the grip part 20a but also by the leg part 20d provided with the notch 20b, so that there is no possibility that the base part receives excessive force locally and breaks, as in the case of Fig. 4A. No, also Figure 4 4
There is no need to use a flat shaft as shown in . Secondly, since the need for a flat shaft is eliminated, a stopper piece 120 can be provided to the mounting shaft 12, and this can be attached to the recessed part 20c at the bottom of the inner surface of the gripping part.
Since the rotation of the shaft 12 is stopped within a certain range in response to this, the angle of the blade can be limited to a predetermined appropriate range. This eliminates concerns about abnormal overheating inside the machine due to blockage of the air outlet.

Thirdly, since the blades 1 can be attached and removed while keeping the blade surface horizontal, the order of attachment and detachment on the grill surface is not specified as in the case of the blade 1 in Fig. One blade can be taken out without removing the other, making blade replacement work easier.

〔Example〕

An embodiment of the present invention will be explained with reference to FIGS. 1 and 2 mentioned above.

According to FIG. 1, the horizontal blade 1 consists of a blade base body 10 made of a steel plate molding, and side caps 11 integrally molded with resin attached to both ends of the blade body 10. The blade body 10 is made by folding a steel plate material in half and caulking the edges together,
It is a hollow body with some space left inside. The side cap 11 is inserted and attached into the end opening of the hollow blade body 10.

This cap 11 has a rear edge 11a at the left and right center portions.
It has a partially cut-out side, in which a horizontal mounting shaft 12 is provided to bridge the cut-out. And this shaft 12
is equipped with a stopper piece 120 consisting of a horizontal protrusion that projects rearward.

On the other hand, the engagement pieces 20 on the air conditioner main body side are provided in the required number at blade mounting pitches on the front side of the mounting plate 2 (see Fig. 3) vertically mounted on both left and right sides of the front surface of the outlet grille. . The mounting plate 2 is made of resin, and in this example, also serves as a decorative plate on both sides of the grille, and is screwed to the grille inner side surface material 3. Since the screwing position is at the base of the engagement piece 20, deformation of the mounting plate 2 when the horizontal blade 1 is attached and detached is prevented, making the attachment and detachment work easy and reliable. The engagement piece 20 is integrally molded with the mounting plate 2.

Each engagement piece 20 is connected to the side cap 11.
a gripping portion 20a into which the mounting shaft 12 is fitted;
It is composed of a leg portion 20d following it. The grip portion 20a has a closing opening 20a' on the front side for attaching and detaching the mounting shaft. The appropriate width of the opening 20a' is about 2/3 of the mounting shaft.
The inner diameter of the shaft is preferably slightly smaller than the shaft diameter D.

Further, a recessed portion 20c of a required length is formed along the circumferential direction at the bottom of the inner gripping surface of this engaging piece 20,
The stop piece 120 of the mounting shaft 12 has a corresponding shape. The length of the concave portion 20c determines the movable (rotational) width of the mounting shaft, that is, the adjustable width of the blade angle, and is determined in consideration of the adjustable width of the blade angle.

Further, a leg portion 20 is provided at the center of the bottom of the inner gripping surface.
A notch 20d is provided to divide d into two. This is to absorb deformation when the mounting shaft is attached, and from that point of view it is advantageous to have a longer length.

In the above configuration, when the blade is attached,
When fitting the mounting shaft 12 into the engagement piece 20, the shaft 12 passing through the opening 20a' causes the grip part 2 to
0a is expanded to both sides, but the deformation of the engaging piece due to this is caused by the grip part 20a and the notch 20 of the leg part 20d.
This is carried out by the portion with b, and no excessive stress is generated at the base of the gripping portion 20a. Therefore, damage to the engagement piece 20 can be avoided.

In addition, the attached blade 1 is attached to the mounting shaft 12
The movement of the stopper piece 120 engages the concave portion 2 on one side.
Since the angle is limited to 0c, it is impossible to increase the angle beyond the necessary range, and there is no fear that the air outlet will be blocked.

Furthermore, since the installation and removal of the horizontal blades 1 can be carried out while the blade surface is kept horizontal, it is possible to place a large number of blades in a row as shown in Figure 3 and use any one of them to affect the others. It is convenient to put on and take off without any hassle.

Although the above description has been made regarding the case where the invention is applied to a warm air heater, the structure of the present invention is not limited to this, and can be applied to other types of heaters as well as air conditioners for cooling purposes. It is something.

[Effect of idea]

As detailed above, the horizontal blade mounting structure of the present invention can prevent damage when installing and removing the blades without using a flat shaft, and since there is no need to use a flat shaft, it is possible to attach a stopper. This makes it possible to limit the angle adjustment range of the blades to a necessary range and avoid abnormal situations such as overheating inside the machine due to blockage of the air outlet. Furthermore, the horizontal blades can be attached and detached from each other on the outlet grille surface independently, and many advantages can be expected, such as reducing the time and effort required for repair and replacement work.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the horizontal blade mounting structure of the present invention, Fig. 2 is an explanatory view showing the main parts, Fig. 3 is a perspective view showing the external appearance of the warm air heater, and Fig. 4 is a perspective view showing an example of the horizontal blade mounting structure of the present invention. FIG. 2 is an explanatory diagram showing a conventional horizontal blade attachment structure. In the figure, 1...Horizontal blade, 12...Mounting shaft, 120...Stopper piece, 20...Engagement piece, 2
0a...Gripping part, 20b...Notch, 20c...
Recessed portion, 20d...leg portion.

Claims (1)

[Scope of utility model registration request] In an air conditioner equipped with separate, angle-variable inner vertical blades and outer horizontal blades 1 for adjusting the air blowing direction of the front air outlet grille, on the trailing edge side near both left and right ends of each horizontal blade 1, toward the rear. A mounting shaft 12 having a protruding stopper piece 120 is provided, and resin mounting plates 2, 2 attached along both left and right sides of the front surface of the outlet grille are fitted with the mounting shaft 12 at a predetermined pitch in the vertical direction. The engaging pieces 20 are integrally formed, and each engaging piece 20 tightly fits and grips the outer periphery of the mounting shaft 12, and includes a gripping part 20a having an opening 20a' for attachment and detachment on the front side, and an inner surface of the gripping part. A notch 20b is provided at the bottom to absorb deformation during attachment and detachment, and a recess 20c is formed along the circumferential direction to define the angle adjustment width of the blade in correspondence with the stopper piece 120. Features: Air conditioner outlet grille horizontal blade mounting structure.