JPS5842676Y2 - pulley - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pulley suitable for guiding a rope that is mainly used to stretch or pull curtains around an agricultural greenhouse.

Conventionally, when cultivating plants in agricultural greenhouses, etc.,
Curtains made of synthetic resin sheets, cheesecloth, non-woven fabric, etc. are placed on the ceiling and sides of greenhouses for the purpose of heat retention or light shielding.

Particularly in large houses, these curtains are opened and closed by rotating ropes, and pulleys are used to guide the ropes, for example.
The one described in Japanese Patent No. 20998 is used.

That is, when guiding a rope with a pulley, in order to prevent the curtain being guided by the rope from getting wedged between the wheel and the rope, a stopper member (a so-called wheel cover) is rotatably attached to the wheel shaft. The rope is guided to the wheel through an insertion hole provided in the end plate of the restraining member.

However, this pulley has the disadvantage that the work of inserting the rope through the insertion hole of the restraining member is complicated, and when the diameter of the insertion hole is increased to facilitate the insertion work, the curtain digs into the insertion hole. Was.

Furthermore, the distance between the restraining member and the wheel is short, and the curtain often bites into the wheel from outside the restraining member.

The object of the present invention is to eliminate the above-mentioned drawbacks of the conventional pulley, and to provide a pulley in which the rope can be easily inserted and the curtain does not dig into the pulley.

The gist of this invention is that the wheels are rotatably attached to the support frame,
A wheel is sandwiched between a support frame and wheel covers are provided on both sides of the wheel cover, and each wheel cover is provided with peripheral edges that protrude in opposite directions, and the peripheral edges have a crack in the axial direction so that they can be opened and closed. The pulley includes a cylindrical body in which a rope insertion hole is formed in a closed state and is slidably and removably engaged with the cylindrical body.

Next, the pulley of the present invention will be explained with reference to embodiments shown in the drawings.

1 to 3 show an embodiment of the pulley of the present invention, where 1 is a support frame and 2 is a wheel.

The wheel 2 is rotatably attached to the support frame 1 by a wheel shaft 3.

Reference numeral 4.4 denotes a wheel cover, which has a circular shape with a diameter larger than that of the wheel 2, and is attached to the support frame 1 from both sides of the wheel 2 with its center aligned with the wheel shaft 3.

The wheel covers 4, 4 are provided with peripheral edge portions 41, 41 that protrude in opposite directions.

Reference numeral 5 denotes a cylindrical body having a rope insertion hole 55, which is detachably attached between the peripheral edges 41 and 41 of the wheel covers 4, 4.

The cylindrical body 5 is slidable along the peripheral edge 41.41.

As shown in FIGS. 4 and 5, the cylindrical body 5 has an elliptical shape at which it connects to the wheel cover 44, and its short axis is equal to the distance between the peripheral edges 41, 41=7)M. , long axis.

A groove 57.57 is formed on the side into which the peripheral edge 41.41 can be inserted.

The ridges 57, 57 are arranged so that the cylindrical body 5 is connected to the wheel covers 4, 4.
The rope insertion hole 55 is formed obliquely so that it coincides with the direction of the outer periphery of the wheel 2 when attached to the wheel.

The cylindrical body 5 is connected to the wheel cover 4 by this groove 57.57.
It slides on the peripheral edge 41.41 of 4.

As shown in FIG. 6, the cylindrical body 5 can be divided into two along the rope insertion hole 55 by dividing the rope insertion hole 55 into two.

The two divided halves 51.51 of the cylindrical body 5 are connected by a hinge 52 on one side, and a fitting part 53.54 is formed on the other side, so that the two halves do not separate and dissipate. It is designed to strengthen the bond when joined together and can be opened and closed.

An inclined surface 56 is formed at the end of the rope insertion hole 55 to prevent damage to the rope inserted therethrough.

Therefore, when inserting a rope into the cylindrical body 5, as shown in FIG.
, 51 should just pinch the rope 6 and reconnect it.

Then, in order to attach the cylindrical body 5 to the wheel covers 4, 4,
As shown in FIG. 8, the short axis of the elliptical connecting part is inserted between the peripheral edges 41.41, and when the groove 57.57 reaches the position of the peripheral edge 41.41, it is rotated by 90°. 9th
As shown in the figure, the peripheral portion 41. It is installed by fitting the grooves 57, 57 into the jH.

The above-mentioned pulley is a rope used to open and close curtains in agricultural greenhouses, and can be bent and rotated to match the shape of the ridges or troughs of the ceiling of the greenhouse, or folded at the ends to rotate. It is suitably used for guiding ropes.

For example, as shown in Figure 10, a rope 6 is attached to the ridge of the house.
When bending and rotating the wheel, a rope 6 is passed through the wheel 2, and the cylindrical bodies 5, 5 are attached to the wheel covers 4, 4 from both sides.

When the rope 6 is tensioned, the cylindrical bodies 5, 5 are attached to the wheel covers 4, 4.
The rope 6 is attached to the wheel 2 by sliding along the peripheral edge 41.41 of the wheel 2.
Guide it securely to the outer periphery of the area.

The curtain 7 is guided on the rope 6 by the rotation of the rope 6, but since the rope 6 is inserted through the cylindrical body 5, the curtain 7 hits the tip of the cylindrical body 5. It is ensured that it is separated from the rope 6, and if the cylindrical body 5
Even if there is an end of the curtain γ that crosses over, it is blocked by the wheel covers 4, 4 and does not come into direct contact with the wheel 2, so that the curtain 7 does not bite into the pulley.

The same applies to the case where a pulley is provided in the trough of the house and the rope 6 is bent and rotated along the trough as shown in FIG.

As shown in FIG. 12, when a pulley is installed on the side wall of the house and the rope 6 is folded back and rotated, the cylindrical body 5 is used only at the position where the curtain 1 bites, and the other parts are omitted. Can be done.

Furthermore, depending on the type of curtain, such as thick cheesecloth or non-woven fabric, the cylindrical body 5 can be omitted even if the wheel cover 4.4 is used alone to prevent the curtain from digging into the curtain.

In addition, in the pulley of the present invention, the support frame 1, the wheel cover 4,
4 may be integrated.

As mentioned above, in the pulley of the present invention, since the cylindrical body in which the rope insertion hole is further formed is fixed to the wheel cover, the curtain is separated by a distance from the wheel by the cylindrical body, and the curtain is attached to the wheel. It never gets crowded.

Furthermore, since the cylindrical body that can be opened and closed is removably attached to the wheel cover, the rope can be inserted into the wheel and the cylindrical body can be attached separately, making it easy to insert the rope. The cylindrical body can be attached only where necessary, and even if the material of the curtain is changed depending on the season or the crop of the greenhouse, only the cylindrical body can be attached or removed accordingly, which is very convenient. It has become a thing.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of the pulley of the present invention, Fig. 2 is a side view showing an embodiment of the pulley of the invention, Fig. 3 is a front view thereof, and Fig. 4 is a view of the pulley of the invention. - A front view of the cylindrical body on the actual flow side, FIG. 5 is a sectional view taken along the line v-■ in FIG. Fig. 7 is an explanatory diagram showing a method of attaching the cylindrical body of an embodiment of the pulley of the present invention to a rope, and Figs. 8 and 9 show a method of attaching the cylindrical body of the pulley of the present invention to a wheel cover. FIGS. 10 to 12 are explanatory diagrams showing how an embodiment of the pulley of the present invention is used. 1...Support frame, 2...Wheels, 3...
...Wheel axle, 4...Wheel cover, 41...
... Peripheral part, 5 ... Cylindrical body, 55 ...
- Insertion hole, 57...Groove, 6...Rope.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A wheel is rotatably attached to a support frame, and wheel covers are provided on both sides of the wheel with the wheel sandwiched between the support frame, and the wheel covers each protrude in opposite directions. A cylindrical body is provided with a peripheral edge, and a cylindrical body with a crack in the axial direction and a rope insertion hole formed in a closed state is slidably and removably locked on both warm edges. A pulley. 2. The pulley according to claim 1, wherein a groove is provided on the outer surface of the cylindrical body, and the groove of the cylindrical body is slidably and detachably engaged with the peripheral edge of the wheel cover. 3. The pulley according to claim 1 or 2, wherein both halves of the cylindrical body which can be opened and closed are connected by a hinge on one side and have a fitting portion formed on the other side.