JPS598583Y2 - Fan - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a fan using resin bones that do not require edge wrapping.

A conventional fan is manufactured through the steps shown in FIGS. 1 to 3.

That is, the bone A has a handle 1 on one side from a central bifurcation, and branches 31 and 32 that spread upwards on the other side, and between the branches there are a number of support rods 2, 2, . . . ... extend radially from the central branch, and the lengths of the support rods 2, 2 are set to be large in advance.

Covering sheets 4, 4 are attached to the front and back sides of this bone A by gluing, adhesion, welding, etc., and if necessary, they are trimmed to the finished outline after a drying process (Fig. 2). , support rod 2,2
The periphery that exposes the tip is wrapped with a banding paper 5 (Fig. 3) to complete the product.

This edge-wrapping process requires skill and takes a long time, and has been a major obstacle in streamlining the fan manufacturing process.

The purpose of the present invention is to improve the above-mentioned conventional fan's circumferential adhesion structure so that the tip of the supporting rod is not exposed without having to wrap the edge.

The technical means for achieving the above object is to connect a large number of support rod tips at a connecting side, and provide an ear portion over the entire area where the peripheral edges of the covering sheet are welded to each other on the outer peripheral side of the connecting side. This is because both ends of the outer edge of the ear coincide with the outer edge of the branch, which is continuous with the handle of the bone.

The above technical means of the present invention operates as follows.

First, in terms of appearance, the range extending from the connecting side of the bones to the welded part on the outside thereof continues to the periphery of the covering paper with a constant width, and becomes an accent part equivalent to the banding paper 5 in a conventional fan.

Further, the outer edge of the ear portion is visually continuous with the branch school, which is connected to the bone handle.

Furthermore, the tips of the bone rods are connected by connecting sides, and
Since the outer peripheral edges of the covering sheet surrounding this are further welded to each other on the outside, the supporting rods and connecting edges are reliably covered by the covering sheet and are not exposed to the outside.

Since the above technical means of the present invention operates as described above,
It has the following unique effects.

(1) Since the band-shaped portion of a certain width from the connecting side and the ear portion performs the same appearance and functional role as the conventional banding paper 5, the banding paper 5 is no longer necessary, and workability is improved accordingly. .

(2) Since both ends of the outer periphery of the ear coincide with the outer edge tip of the branch, the part protrudes outward from the branch, causing an unsightly appearance, and the protrusion causing deformation and damage to the part during use or transportation. This can also prevent the inconvenience of

(3) Since the outer periphery of the covering sheet forms an ear over the entire area, there is no fear that the outer periphery of the covering sheet will easily peel off.

Next, embodiments of the present invention will be described based on the drawings.

FIG. 4 is a plan view showing the bone used in the embodiment of the present invention, in which the handle 1 is formed on one side from the central part of bone A, and the branches 31 and 32 that spread upward are formed on the other side. There is.

Between the branches 31, 32, a plurality of support rods 2, 2 extend radially from the central branch.

A connecting edge 6 is provided at the tip of each support rod 2, 2, extending from one branch 31 to the other branch 32, so as to approximately match the finished external shape. 2,2
are connected.

As shown in FIG. 5, this connecting side 6 is provided at a portion located slightly inside the outer periphery (two-dot chain line) extending the branch 31 to form a stepped portion 7.

The connecting sides 6 have the function of keeping the pitch of each support rod 2, 2 constant when a covering sheet is attached, which will be described later.

Now, in order to manufacture a fan using the above-mentioned bone A, cover sheets 4, 4 such as laminate having an appropriately shaped resin layer are applied from the front and back sides of the bone A so that the surfaces to which they are attached are facing each other. Then heat welding is performed under appropriate pressure conditions.

At this time, the front and back covering sheets 4, 4 are welded to each other also on the extension line of the stepped portion 7, which is the outer periphery of the connecting side 6.

The thermally welded covering sheets 4, 4 are trimmed along the outer periphery extensions of the branches 31, 32 (double-dashed lines in FIG. 5).

The trimmed covering sheet on the outer periphery of the fan covers the connecting sides 6 and is bonded to each other to form the ears 8, as shown in FIG.

As a result, the supporting rods 2, 2 are completely covered, and the conventional hem-wrapping operation is no longer necessary, and the fan according to the embodiment of the present invention is perfect.

In addition, in the fan of the above embodiment, since the connecting side is located at the tip of the support rods 2, 2, when the support rods 2, 2 are fanned, the shape of the support rods 2, 2 is smaller than that of a conventional fan using joint resin bones. The bending effect is also improved.

[Brief explanation of the drawing]

1, 2, and 3 are explanatory diagrams showing the manufacturing process of a conventional fan, FIG. 4 is a plan view of the bone A used in the fan according to the embodiment of the present invention, and FIG. 5 shows the stepped portion 7. The partial view shown in FIG. 6 is a cross-sectional view of the six connecting sides with the covering sheet welded.
・・・・・・Step part, 8... Ear part, A...
·Bone.

Claims (1)

[Scope of utility model registration request] In a fan in which a covering sheet is heat-welded to both sides of a group of resin bone support rods, the tips of a large number of support rods are connected by a connecting edge, and the peripheral edges of the covering sheet are bonded to each other on the outer periphery of the connecting edge. A fan with ears welded over the entire area, with both outer edges of the ears aligned with the outer edge of a branch that continues to the bone handle.