JPS6218909Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a fin for a louver used for regulating air, dustproofing, and waterproofing a ventilation hole, etc.

[Conventional technology]

Conventionally, this type of louver has been made by arranging and welding thin fins 2 each having a groove-shaped cross section in a staggered manner to a rectangular frame 1, as shown in Figures 1 to 3. As shown in FIGS. 4 and 5, there is a structure in which a large number of fins 2a having a size that fits the frame 1 are formed integrally and are connected to the frame.

[Problem that the invention attempts to solve]

In the former type of louver, welding between the fins and the frame is performed for each fin, and the beginning and end of welding occur each time.

Generally, welding defects are likely to occur at the start and end of welding, and this tendency is particularly noticeable in short weld lines. In particular, if the fins 2 are narrow and fine, there is a problem that the strength of welding decreases and the fins 2 are damaged when subjected to air flow vibrations, shocks, etc.

On the other hand, in the latter type of louver, an extruded material such as aluminum or plastic is often used as a means for integrally forming the fins, but when an extruded material is used, the ventilation part 2b is However, there are problems such as the process of removing from an integrated object is complicated and there is a large loss of expensive aluminum material. In addition, there are also problems in that it is not suitable for manufacturing small lots or for large-sized louvers when it is formed from plastic or the like.

Furthermore, with this type of louver, the inside of the ventilation opening can be seen directly, so although it can straighten the air, it cannot be expected to provide dustproofing or waterproofing.

[Means for solving problems]

The present invention was developed to solve these problems, and consists of two fin component plates that have a corrugated cross-sectional shape and have ventilation holes formed in predetermined locations, and the ventilation hole portion and the blocking portion are connected to each other. It is characterized by being overlapped and bonded to form a cavity that communicates with the ventilation hole.

[Function] Due to the above structure, the louver fins are integrated, and the strength is improved without interruption of the weld line even when welded to the frame. In addition, the waveform shaping and vent hole drilling can be performed in separate processes, allowing for greater freedom in selecting production methods.

〔Example〕

Next, embodiments of the present invention will be described with reference to FIGS. 6 to 12. First, the method for forming the louver fin of the present invention will be explained with reference to FIGS. 9a, b, and c.
1 shows an unprocessed material 11 having a predetermined size after completion of molding, and elongated intermittent ventilation holes 12 (sixth (see figure). As is clear from FIG. 6, the distance between the ventilation holes 12 in the same row, that is, the width required for the connecting plate portion 11a is small. Then, as shown in c, the part where the ventilation hole 12 is provided by pressing means or the like, that is, the part where the ventilation hole part 14 is on one side, and the part where no ventilation hole is provided,
That is, it is formed into a wave shape so that the closing portion 13 is on the other side. In this example, the fin structure plate 15 is formed so that the ventilation hole portion 14 is located in approximately half the area of the corrugation.

Two fin constituent plates 15 formed in this way
As shown in FIG. 10a, the first blockage 1
3 and the second ventilation hole portion 14 and the connecting plate portions 11a provided on both plates 15 are overlapped, and each of the connecting plate portions 1
1a are joined together by any means such as spot welding, adhesive, riveting, etc. to form a fin A having a large number of cavities 16.
get. Then, the periphery of this fin A is joined to the frame 17, and appropriate parts are welded or glued.
A louver B as shown in FIG. 6 is obtained.

Further, the fin A is a connecting plate portion 1 of two stacked fin constituent plates 15, as shown in FIG. 10b.
A spacer 18 having approximately the same width as this connecting plate portion 11a is interposed between 1a, and the whole is spot welded.
The strength of the finished fin A can be increased by binding with an adhesive or a riveting means. In this example, the material 11 was formed into a waveform with the ventilation holes 12 formed in advance. However, the ventilation holes 12 may be formed after the material 11 is formed into a waveform, or they may be molded at the same time. is also possible.

When the spacer 18 is not used, the ventilation holes 12 are provided to form a staggered ventilation path, but when the spacer 18 is used, the fin structure plate has a trapezoidal cross section as shown in FIG. 11a. A ventilation hole 12 is formed on one side of the corrugated plate having a vent hole 12 to form a ventilation hole portion 14, and the ventilation hole portion 14 of another fin component plate 15 is stacked so as to butt against the closed portion 13 without the ventilation hole 12. The ventilation holes 12 of both plates are connected in a staggered manner with a gap provided by the thickness of the spacer 18. The ventilation holes 12 provided on both plates communicate with each other in a staggered manner and only need to have the effects of regulating wind, dustproofing, and waterproofing. can be set arbitrarily. Also, the fin component plate 1
5 is formed into a sinusoidal waveform as shown in FIG. You may.

FIG. 12 shows another embodiment of the frame 17, in which the frame 17 has a funnel-shaped cross section as shown in FIGS. 6 and 7.
Instead of using an angle-shaped structure, the frame 17
This is a combination of fin A and fin A. Furthermore, as another embodiment, a frame may not be prepared and combined, but an edge without ventilation holes 12 may be formed around the periphery of the fin component plate 15, and the structure may be used as a frame and the work of combining the frame and fins may be omitted. good.

Note that the staggered ventilation holes 12 formed in the fin A
The air volume can be freely adjusted by changing the size of the ventilation hole 12, the shape and wavelength of the waveform, and the thickness of the spacer 18 interposed between the front and rear fin constituent plates 15.

The material of the fins may be a steel plate, an aluminum plate, a stainless steel plate, a plastic plate, etc., and there are no particular restrictions.

[Effect of idea]

As described above, according to the present invention, the weld line is continuous, reliability is improved, and the strength of the joint is improved.

Increased selectivity of production means, eliminating the need for expensive molds or advanced technology.

It saves expensive materials and is suitable for small lot production.

A highly rigid fin can be formed by overlapping and bonding two corrugated fin constituent plates.

A multi-row space is constructed between the two boards, and it is expensive to provide ventilation, dustproofing, and waterproofing.

Since the strength is improved, each fin component plate can be made thinner, resulting in weight reduction and material savings.

The work of assembling the fins and the frame is also simplified compared to the prior art.

Air volume can be freely selected by adjusting the shape of the ventilation holes.

[Brief explanation of the drawing]

Figure 1 is a front view of the conventional example, Figure 2 is Figure 1A-
3 is a sectional view taken along line B-B in FIG. 1, FIG. 4 is a front view of another example of the conventional example, FIG. 5 is a partial perspective view of the same fin, and FIG. A front view of the louver of the present invention, FIG. 7 is a sectional view taken along line A-A in FIG. Fig. 10a is a cross-sectional view of a part of the fin without a spacer, b is a cross-sectional view of a part of the fin with a spacer, Fig. 11a, b is a partial sectional view showing another example of the vent, and FIG. 12 is a sectional view of the main part showing another example of the frame. A...fin, B...louver, 11...material, 11a...connecting plate section, 12...ventilation hole, 13
...Closing portion, 14...Vent hole portion, 15...Fin component plate, 16...Cavity, 17...Frame, 18...Spacer.

Claims (1)

[Claims for Utility Model Registration] (1) Two fin component plates each having a corrugated cross-sectional shape and having ventilation holes formed at predetermined locations are joined together by overlapping the ventilation hole portion and the blocking portion to create a ventilation hole. A louver fin is characterized by forming a cavity that communicates with the fin. (2) The louver fin according to claim 1 of the utility model registration, characterized in that a ventilation hole is provided at approximately a half-wavelength portion of the corrugation, and two fin-constituting plates are stacked and bonded with a shift of half a wavelength. (3) Claims 1 and 2 of the utility model registration claim characterized in that a spacer with a width that does not block the above-mentioned ventilation holes is interposed between the two fin constituent plates in a direction perpendicular to the waveform. Louver fin as described.