JPH0517545Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a slit used as a suction port for air conditioning ventilation, and more particularly to a fixing structure for a slit blade.

[Conventional technology]

Slits, which are typical air conditioning/ventilation inlets, are installed at the return air duct inlets or ventilation inlets between rooms, and because they are installed in places where people can see them, their performance is limited. The design cannot be ignored either.

Therefore, the material used for the slit is aluminum, which is shiny, lightweight, and easy to process. In consideration of performance, the shapes of the parts are determined to have low air resistance and large opening areas, and the number of parts is also reduced.

Furthermore, in the assembly process in the process of product production, it is desirable to use an assembly method that does not damage the above-mentioned soft aluminum material and is accurate in terms of design and performance.

FIG. 6 shows a schematic structure of a slit in a conventional example.

In the figure, A' is a slit, which is composed of a face 1, a blade 2, a partition frame 20, and the like.

That is, the periphery is formed by four faces 1, and a large number of blades 2 are formed within the quadrilateral formed by these faces 1.
are arranged in parallel either vertically or horizontally.

The face 1 is opened at both ends of the blade 2, and both ends of the blade 2 are inserted into the openings and fixed by crimping.

Here, the length of the opening in the two directions of the blade is increased,
As the blade 2 becomes longer, a reinforcing means is required to reinforce and support the blade 2 in the middle, and a partition frame 20 is provided as shown in the figure in a slit having an opening of a predetermined length or more.

FIG. 7 shows a detailed diagram of the fixing structure of the partition frame 20 and the blades 2. The blades 2 are arranged in parallel at predetermined intervals. Then, a U-shaped frame engaging portion 5 is provided on this blade 2, and this frame engaging portion 5
Then, the partition frame 20 having a substantially U-shaped cross section is inserted, and then the partition frame 20 is pushed open with a tool in the direction of the symbol b in the figure to fix the blade 2. There is. At this time, a cut 21 is formed in the partition frame 20 along the blade 2.

[Problem that the invention attempts to solve]

However, the conventional structure described above has a disadvantage in that it is not easy to push open the partition frame 20 and the workability is poor.

Additionally, there was a risk that the material would be damaged during the work.

Furthermore, the blades 2 were not securely fixed, and the finishing accuracy of the blade arrangement was poor, making it difficult to improve the finishing accuracy of the product.

SUMMARY OF THE PRESENT DEVICE An object of the present invention is to provide a fixing structure for a slit blade which can eliminate the above-mentioned drawbacks, securely fix the blade, improve the finished product precision, and improve workability.

[Means for solving problems]

In order to achieve the above object, in the present invention, a face forming a peripheral edge, a large number of blades arranged in parallel with both ends supported by this face, and an engaging portion opened in this blade are penetrated, A part of the blade is fixed in the engagement part through a slit made of a partition frame or the like having a recess on the same cross section as the blade surface, which is installed between the faces to fix the blade in the engagement part. The structure is such that it is pushed out and deformed toward the joint portion and the recessed portion of the partition frame, and is fixed by toggle crimping.

[Effect]

Therefore, the blades can be easily fixed by simply inserting the partition frame into the frame engaging portions provided in the blades and crimping them in a state where a large number of blades are arranged.

〔Example〕

Hereinafter, the present invention will be explained based on embodiments shown in the drawings. Note that the same parts as in the conventional example are given the same reference numerals.

Fig. 1 is a perspective view of the main parts of an embodiment of the present invention, Fig. 2 is a plan view of the whole, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is a plan view of the blade. be.

In the figure, A is a slit, which is composed of a face 1, a blade 2, and a partition frame 3.

Face 1 is a 1 mm thick aluminum plate with a cross section of 3
It is bent and formed into the shape shown in the figure. This cross-sectional shape of the face 1 not only increases the strength of the face 1 and facilitates the installation of the blades 2 and the partition frame 3, but also reduces the air resistance of the air passing through the slit A. In addition, the shape is designed to improve the design and facilitate processing.

The four faces 1 are formed into a quadrilateral shape, and each face 1 is fixed by welding both ends.

A large number of blade support holes 4 for fixing both ends of the blades 2 are opened in the upper and lower faces 1 at equal intervals, that is, at pitches for arranging the blades 2.

As shown in FIG. 4, the blade 2 has protrusions 2a formed with notches at both ends thereof, and the protrusions 2a are fitted into the blade support holes 4,
It is crimped and fixed to face 1.

Since the blade 2 has a plate-like cross-sectional shape as shown in FIG. 3, its strength is weak in the thickness direction of the blade 2.

Here, if the opening of slit A is wide and the length in the two directions of the blade is long, as shown in Fig. 2,
A partition frame 3 for supporting the blade 2 at an intermediate portion is disposed perpendicularly to the blade 2.

That is, the partition frame 3 is placed between the left and right faces 1.
A frame engaging portion 5 for inserting the partition frame 3 is opened in the blade 2.

The cross-sectional shape of the partition frame 3 is approximately U-shaped as shown in FIG. 5, and the frame engaging portion 5 through which the partition frame 3 is inserted is also formed in a U-shape as shown in FIG. ing. Here, the external size of the partition frame 3 and the size of the frame engaging portion 5 are substantially the same, and are formed so as not to wobble.

Then, the caulking part 6 of the blade 2 is strongly pushed in the direction of arrow a using the caulking method, and the caulking part 6 strongly presses both inner walls 8 in the recessed part 7 of the partition frame 3, so that the blade 2 and The inner partition frame 3 is tightly secured.

In addition, in the case of this caulking method, the force applied is in the width direction of the blade 2 and in the depth direction of the partition frame 3, and since the material of the blade 2 is soft aluminum, the force applied is not strong enough. is performed extremely well, and the blade 2 is firmly fixed.

In addition, when tightening the blades 2 and the partition frame 3, it is possible to tighten all the blades 2 at once, or to tighten the blades 2 and 3 at once.
You are free to swage one sheet at a time, or to tighten several sheets at a time as needed.

In addition, in the above embodiment, the partition frame 3 is one
I explained the case of a book, but the partition frame 3
The same applies when there are two or more.

Furthermore, although the description has been made regarding the case where the cross-sectional shape of the middle partition frame 3 is approximately U-shaped, the shape is not limited to this, and any shape that allows the blade 2 and the middle partition frame 3 to be joined by a caulking method can be used. For example, V-shaped cross-sectional shapes and other shapes are also included within the technical scope of the present invention.

[Effect of idea]

As explained above, according to the present invention, the following effects are produced.

() It can be securely tightened by simply toggling the blades.

() The material of the blade is aluminum and soft, so it can be tightened well.

() There is no risk of damaging the product during tightening work, and the product value will not be harmed.

() Finishing accuracy and appearance are good.

() Workability is good and productivity is significantly better than conventional ones.

() Since the caulking part is strong, the strength of the entire slit is significantly improved compared to conventional ones.

() Since the blade pitch can be made with good accuracy, the appearance and performance of the blade slit are improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of an embodiment of the present invention, Fig. 2 is a plan view of the whole, Fig. 3 is a sectional view taken along line B-B in Fig. 2, and Fig. 4 is a plan view of the blade. FIG. 5 is a sectional view of the partition frame, FIG. 6 is a plan view of the conventional example, and FIG. 7 is a perspective view of essential parts of the conventional example. 1...Face, 2...Blade, 2a...Protrusion, 3...Inner partition frame, 4...Blade support hole,
5... Frame engaging part, 6... Caulking part, 7... Recessed part, 8... Inner wall.

Claims (1)

[Scope of Claim for Utility Model Registration] A face forming a peripheral edge, a large number of blades arranged in parallel with both ends supported by the face, and a frame engaging portion provided in the blades,
A part of the blade is attached to the frame in a slit made of a partition frame or the like having a recess on the same cross section as the blade surface, which is installed between the faces in order to fix the blade in the engagement part. A fixing structure for a slit blade, characterized in that the engagement part and the partition frame are pushed out and deformed toward the recessed part side, and fixed by toggle crimping.