JPS60207608A - Fan - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fan, and particularly to a hem wrap portion thereof.

As shown in Fig. 1, a conventional fan has a covering paper (1) made of paper or a synthetic resin sheet, +in pasted on the front and back sides of a group of bone support rods, and its outer periphery is covered with a strip of paper (11) over the front and back sides. Covered.

However, this conventional type does not provide sufficient durability.

When using a fan, this will occur as shown in Figure 2.
This is because the tear starts from the edge wrapping part t121 covered by the J band paper, and this damage (A) spreads over the entire area of the covering paper with use. In other words, the strength of the edge wrapping part is insufficient. .

The object of this invention is to increase the strength of the edge wrapping part in order to improve the durability of the fan.The technical means of the invention to solve the above problems is to use a synthetic resin to coat the outer periphery of the paper. This means that it is welded and surrounded on the front and back sides.

The above technical means works as follows.

Since the hem-wrapped portion is formed by welding and surrounding the synthetic resin on the outer periphery of the covering paper over the front and back sides of the fan, this hem-wrapped portion is difficult to tear. That is, even if the edge-wrapping capital of the lever contacts or collides with other parts during use, it will not easily break. It can also be said that it exhibits greater strength than the covered paper part.

Since it is made of twisted and welded material, it will not peel off if it gets wet.

Since this invention has the configuration described in item 1, it has the following unique effects.

Since the mechanical strength of the hem-wrapped portion is sufficiently increased, tearing does not begin from this portion, and durability is improved.

Since the edge wrap does not peel off due to water exposure, it is durable enough to be used in areas where water is used or where there is a lot of moisture.

Next, an embodiment of the present invention will be described. In an embodiment of the present invention, the synthetic resin is a flexible synthetic resin such as soft vinyl chloride.

According to this embodiment, since the hem wrap portion is made of a flexible material, it is easily deformed to accommodate the deflection of the support rod group portion during use, and the air blowing effect is not impaired.

Embodiments of the present invention will be described below with reference to FIGS. 3 to 6.

In this embodiment, as shown in Fig. 3, the outer periphery of the covering paper fi+, +11 on the front and back sides, which coincides with the periphery of the support rod group 03), is wrapped around the front and back sides of the fan using an edge wrapping material (2) made of soft vinyl chloride resin. The picture scroll material is welded to the outer peripheral edge.

The welding surrounding by this hem wrap material (2) is 1, for example, 4.
Obtained by the method shown in Figure 5.

This method is based on the melting side (3)k of the above-mentioned soft vinyl chloride.
The 42 peripheral edges of the melting tank are immersed in the melting tank, and the peripheral edges of the melting tank are rolled.
The depth of the molten vinyl chloride (31) stored in 3) is
The radial width (w) of the fan of the edge wrapping material (2)
).

In addition, in order to keep the vinyl chloride in a molten state, a heating device is added to the melting tank (3) to maintain a constant heating temperature. This heating temperature is set to a predetermined value taking into consideration the melting point and weldability of the vinyl chloride resin.

In addition, the depth of molten vinyl chloride C3]1 is
Since this corresponds to the width (support) of 2), a change in this depth results in a change in this width (W).

Therefore, in this case, a replenishment cooker (03) is provided to heat and keep this replenishment tank warm under the same conditions as described above, and also to keep the replenishment cooker (in a sealed state).

The height of the upper end of the downstream end opening of the discharge pipe (341) led out from this replenishment tank mark (341) is made to match the liquid level height.

Therefore, when the amount of molten vinyl chloride 011 in the melting tank (3) decreases, the liquid level in the melting tank (3) is maintained at a constant level in the second well supplied from the supply tank mark 1.

As the liquid level decreases, air enters the supply tank from the discharge pipe (34), and the discharge pipe (34)
This is because molten vinyl chloride CI+1 flows out.

Instead of this replenishment method, it is also possible to use a combination of a liquid level switch and an electric valve to make the replenishment tank (marked) non-sealed.

Next, in this embodiment, as shown in Fig. 4, multiple guide bars (supports) are used as means for rolling the fan.
), 36) are provided above the melting tank (31), and stoppers 361 and i are provided at both ends of each guide bar, projecting perpendicularly to the guide bar.

Therefore, as shown in the same figure, one stopper f31JK
When the handle (131) of the fan is supported and the periphery of the fan is immersed in the molten vinyl chloride 011, one end of the rimming part is exactly immersed in the molten vinyl chloride 01.
From this state, when the handle (13) is moved to the stopper side at the other end, the periphery of the fan rolls and each part of the periphery is sequentially immersed into the molten vinyl chloride 01), and the periphery is placed in a predetermined position. Adhere to the width of fused PVC.

When the handle (13) aligns with the other stopper σ, the other end of the periphery will be exactly immersed in the molten vinyl chloride C11l, and when the fan is pulled up from this state, the periphery of the fan will fall within a predetermined range. Molten vinyl chloride adheres throughout.

Next, when dried, this molten vinyl chloride hardens,
The edging work is completed.

In this embodiment, since a large number of guide bars (35) are provided, a large number of fans can be hemmed at the same time.

Although it is possible to roll a fan by purchasing it, it is also possible to mechanize it, and for this purpose,
The handle tlK may be supported by a swinging lever, and the swinging lever may be reciprocated from one stopper circle of the guide crosspiece to the other stopper circle.

In the above example, the fan bg is configured to move, but it is not necessarily necessary to rotate it, as shown in Fig. 6.
The fan may rotate on its own axis or move in a manner similar to this with respect to the melting tank (3).

It goes without saying that other synthetic resins other than the vinyl chloride resin used in the above-mentioned embodiments can also be used as the twisted edge wrapping material (2) as long as they can be welded.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram of a conventional hem-wrapping method, Fig. 2 is an explanatory diagram of a conventional fan, Fig. 3 is a sectional view of a main part of an embodiment of the present invention, and Fig. 4 is an explanatory diagram of a hem-wrapping method of an embodiment of the present invention. An explanatory diagram of a device for this purpose, and FIG. 5 is a plan view thereof. Figure 6 is an explanatory diagram of another method, and 2fi+...
...Coated paper u2... Edge wrapping part (13).
...Handle (2) ...Edge wrapping material (3) ...
... Melting tank 011 ... Melting vinyl chloride agent Patent attorney Yoshihiro Sakagami

Claims (2)

[Claims] (1) A fan made by welding and surrounding the outer edge of the covered paper pasting area with synthetic resin on the front and back sides. (2) The fan according to claim 1, in which the first synthetic resin is a flexible synthetic resin.