JPH10304779A - Relay pulley member for curtain opening/closing device for greenhouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To equalize the arrival distance of leading pipes connected to respective curtains by positioning the rotation center of the pulley of the relay pulley member of a curtain opening/closing device for a greenhouse right below or right above the center shaft of a ceiling longitudinal member. SOLUTION: In this relay pulley member of the curtain opening/closing device for the greenhouse wound to a side pulley member disposed near the upper part of both side faces of the greenhouse and fixed and disposed to the ceiling longitudinal member, the rotation center of the pulley pivotally supported and disposed to a casing 3 to which a traveling wire is wound is positioned so as to be right below or right above the center shaft of the ceiling longitudinal member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a relay pulley member used for a greenhouse curtain opening and closing device.

[0002]

2. Description of the Related Art A greenhouse is usually provided with a curtain made of a plastic film for shielding light and keeping heat, and a device for opening and closing the curtain. This device will be described with reference to the arrangement diagram of FIG. 7. For example, mounting wires 18 and 19 for mounting side pulley members 20 and 21 that are stretched along the longitudinal side surface of the greenhouse A, A traveling wire 27 wrapped around the side pulley members 20 and 21 and stretched between the side surfaces of the greenhouse A
In order to drive the traveling wire 27, the traveling wire 27 is wound around and provided, and the driving take-up drum 22 functions as a driving unit.
The curtains 25 and 26 have one end fixed to the ceiling longitudinal member 16 and the other end fixed to the leading pipes 23 and 24. The leading pipes 23 and 24 are connected to the traveling wire 2.
7, the curtains 25 and 26 are connected to the traveling wire 27 through the leading pipes 23 and 24, and the curtains 25 and 26 follow the traveling of the traveling wire 27. It can be opened and closed.

[0005] The running wire 27 is stretched between the side surfaces of the greenhouse A.
Since it is difficult to support the curtains 25 and 26 alone, it is usual to arrange the relay pulley member 10 between the side pulley members 20 and 21.

[0004] As such a relay pulley member 10, conventionally,
The one shown in FIGS. 5 and 6 is used. That is, a pulley body 13 having a pulley and a casing that supports the pulley, and holding the pulley body 13, the greenhouse is located just below a ceiling aggregate disposed substantially in the center of the greenhouse. And a fixing portion 14 fixedly disposed on the ceiling longitudinal member (the pipe member 16 or the wire 17) provided in parallel with the side surface. Among them, the fixing portion 14 has a first plate 14a having a predetermined width along the ceiling longitudinal member and a second plate 14b orthogonal to the first plate 14a. First
The sliding body 13 is disposed near both ends of the plate body 14a. That is, two sliding bodies 13 are provided. this is,
As shown in FIG. 7, one end of the driving take-up drum 22
Then, the traveling wire 27 looped around one side pulley member 20 provided in the vicinity of one side surface is provided with the side pulley member 21 provided in the vicinity of the other side surface which is disposed opposite to the other side surface.
The first pulley member 10 of the relay pulley member 10 must first be wrapped around the first pulley member 13 before turning around the first pulley portion 27a, and then the direction is changed by the side pulley member 21 near the other side surface. Until the traveled wire 27 is wound around the other side pulley member 20 near one side (the second travel portion 2).
7b), two relay pulley members 10 need to be wound around the other pulley body 13 so that two are provided. The other end of the traveling wire 27 is wound around the side pulley member 20 near one side surface, and then the driving winding drum 2
Fixed to 2.

The second plate 14b is connected to the relay pulley member 10
Since the ceiling longitudinal member may be bent simply by fixing the ceiling longitudinal member to the ceiling longitudinal member, the ceiling longitudinal member 29 is provided to be suspended from the ceiling aggregate 29 by the suspension wire 15. Note that the connection with the suspension wire 15 is made by using a third plate 14c that can be joined to the second plate 14b, sandwiching the suspension wire 15 between the two, and then tightening and fixing the bolt 14i. .

Further, for the second plate 14b,
A first connecting plate 14f, which is fixed using bolts 14d and nuts 14e, and which holds a pipe member 16 as a ceiling longitudinal member, is provided on the semi-tubular portion 14g. Further, a second portion serving as a connecting portion when the ceiling longitudinal member is the wire 17.
The connection plate 14h is also provided on the opposite surface. In addition,
The fixing portion 14 is such that the ceiling longitudinal member is
6, In order to be able to cope with any case of the wire 17,
It has both a portion connected to the pipe member 16 and a portion connected to the wire 17.

[0007]

However, if the ceiling longitudinal member is held by the first or second connecting plate 14f, 14h of the relay pulley member 10 described above, FIG.
As shown in (1), the rotation center 13a of the pulley is not located directly below the longitudinal central axis of the ceiling longitudinal member. Therefore, as shown in FIG. 7, the first curtain 2 is connected to the first traveling portion 27a of the traveling wire 27 via the leading pipe 23.
5 and the second curtain 26 is connected to the second traveling portion 27b of the traveling wire 27 via the leading pipe 24, the ends of the curtains 25 and 26 are fixed to the ceiling longitudinal member, and the respective side pulleys In the direction of the members 20 and 21, the curtain 25,
When the curtain 26 is closed, there is a problem that the distances of the leading pipes 23, 24 from the ceiling longitudinal member differ when the curtains 25, 26 have the same length.
For this reason, in order to close the remaining gap, even if you try to arrange another curtain, prepare curtains with different widths,
In addition, it is necessary to make a selection, which is a factor that delays the installation work.

In addition, the above-mentioned relay pulley member 10 needs to use different connecting plates 14f or 14h depending on whether the ceiling longitudinal member is the pipe member 16 or the wire 17, and the ceiling longitudinal member varies depending on the greenhouse. The operator had to select the connecting plate to be used in accordance with the specifications described above and perform the mounting work.

Further, since the hanging wire 15 is merely held between the two plates 14b and 14c via the bolt 14i, there is a problem that the bolt 14i is easily pulled out if the bolt 14i becomes loose due to long-term use.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and provides a relay pulley member of a curtain opening / closing device for a greenhouse, in which a leading pipe connected to a curtain can reach the same distance from a longitudinal longitudinal member of a ceiling. As an issue.
It is another object of the present invention to provide a relay pulley member capable of facilitating an operation of attaching a ceiling longitudinal member. Another object is to provide a relay pulley member that can be reliably connected to a suspension wire.

[0011]

In order to achieve the above-mentioned object, a relay pulley member of a curtain opening / closing device for a greenhouse according to the present invention is provided by being wrapped around side pulley members disposed near upper portions on both sides of a greenhouse. And has a function of relaying a traveling wire connected to the greenhouse curtain, and for a greenhouse fixedly arranged on a ceiling longitudinal member arranged in parallel with the side surface of the greenhouse and below the ceiling aggregate of the greenhouse. In the relay pulley member of the curtain opening / closing device, when the rotation center of the pulley on which the traveling wire is laid and supported by the casing is fixed to the fixing portion to the ceiling longitudinal member, the longitudinal length of the ceiling longitudinal member It is provided so as to be located directly below or directly above the direction center axis.

[0012] The fixing portion may be configured to have a pair of holding members, and may be fixed to the ceiling longitudinal member by the holding members, and a casing for supporting the pulley may be used. It is possible to use one having a mounting piece protrudingly attached to one of the two holding members. In this case, it is preferable that a pipe holding portion when the ceiling longitudinal member is a pipe material and a wire holding portion when the ceiling longitudinal member is a wire are vertically provided on the pair of two holding members.

[0013] Preferably, the fixing portion has a connecting portion for a suspension wire connected to the ceiling aggregate, and the connecting portion for the hanging wire is a pair of two holding members forming a fixing portion. It is preferable that a plurality of small holes are provided in one of the small holes, and the hanging wire is knitted and connected to the small holes.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in more detail based on embodiments shown in the drawings. FIG. 1 is a diagram showing a relay pulley member 1 of a greenhouse curtain opening / closing device according to one embodiment of the present invention, which is configured to include a pulley 2, a casing 3, and a fixing portion 4.

The pulley 2 is rotatably mounted on a support shaft 3a provided on the casing 3. Casing 3
Has a substantially U-shaped cross section. That is, the pulley 2
Between two side plates 3b, 3c formed so as to cover both side surfaces of the pulley 2 and to have a space slightly wider than the thickness of the pulley 2, and between the upper edges of the side plates 3b, 3c. And a base end face 3d to be formed. The support shaft 3a passes through a substantially central portion of one side plate 3b, then passes through a shaft insertion hole 2a formed at a substantially central portion of the pulley 2, and further passes through the other side plate 3c, and is fixed. I have.

At a position slightly deviated from the center of the base end face 3d of the casing 3, there is provided a mounting piece 3e for connecting to a fixing portion 4 described later. Specifically, the mounting piece 3e includes a vertical portion 3f raised from the base end face 3d and the vertical portion 3f.
And a raised portion 3f is provided at a position slightly deviated from the center of the base end face 3d. As described later, when the ceiling longitudinal member is the wire 7, this is a relief for positioning the wire 7 right above the support shaft 3 a which is the rotation center of the pulley 2. Also,
The arc portion 3g is formed in an arc shape in accordance with the shape of one of the holding members 14 constituting the fixing portion 4 described later.
In this relation, the arc center of the arc portion 3g is provided so as to be parallel to and directly above the rotation center of the pulley 2.

It should be noted that, in the present embodiment, two of the above-described pulley bodies each including the pulley 2 and the casing 3 are provided at a fixed portion 4 described later at a predetermined interval along the longitudinal direction of the ceiling longitudinal member. This is the same as that described in the section of the prior art.

The fixing portion 4 is composed of a pair of holding members 41, 42.
Is configured. Among these, one holding body 41 is
In order to attach two sliding bodies at a predetermined interval, it has a predetermined length in the lateral direction along the longitudinal direction of the ceiling longitudinal member (the pipe member 6 or the wire 7). Further, it is formed in an arc shape in cross section. The center of the arc portion 41a is the pulley 2
Is formed so as to be parallel to and directly above the support shaft 3a, which is the center of rotation, and the arc portion 3f of the mounting piece 3e overlaps with the outer surface of the arc portion 41a and is fixed by bolts. Have been. That is, the arc portion 3f of the mounting piece 3e and the arc portion 41a of the one holding body 41 have the same curvature where the arc centers coincide with each other, but have a different radius.

An arc portion 41a constituting one holding body 41
As shown in FIGS. 1 to 3, a lower tongue piece 41 b protruding downward is provided from a lower edge of the horizontal central portion of FIG.
A small projection 41c is provided on the inner surface of the lower tongue piece 41b. This is provided so that when the ceiling longitudinal member is the wire 7, the wire 7 is sandwiched below the small projection 41c by the other sandwiching body 42 to prevent the wire 7 from falling out. Further, the lower tongue piece 41
An engagement piece 41d bent toward the other holding body 42 is formed at the lower edge of b. Further, an upper tongue piece 41e having a bolt insertion hole 41f is formed from an upper edge of a lateral center of the arc portion 41a.

The other holding member 42 is shown in FIGS.
As shown in the figure, the holding member 4 is formed of a plate-like body having a predetermined length in a vertical direction perpendicular to the longitudinal direction of the ceiling longitudinal member, has a hanging wire connecting portion 42a at an upper part, and
1 at the position facing the bolt insertion hole of the upper tongue piece 41e,
A bolt insertion hole 42b is formed. Further, at a position facing the arc portion 41a of one of the holding members 41, an arc portion 42c bulging in the opposite direction to the arc portion 41a, having the same arc center as the arc portion 41a and having the same curvature is formed. . Further, an engagement hole 42d with which an engagement piece 41d of one of the holding members 41 is engaged is formed below the arc portion 42c.

Therefore, the engaging hole 42 of the other holding member 42
After the engaging piece 41d of one of the holding members 41 is engaged with d, one of the ceiling longitudinal members is positioned at a predetermined position. That is, if the wire 7 is used, the lower tongue piece of the one of the holding members 41 If the pipe material 6 is located below the small protrusion 41c of the 41b, after being positioned between the two arc portions 41a and 42c,
By simply aligning the bolt insertion holes 41f and 42b of the holding members 41 and 42 and fastening them with the bolts 45 and nuts 46, any of the ceiling longitudinal members can be the support shaft which is the center of rotation of the pulley 2. Directly above 3a, their central longitudinal axes will be located in parallel. In this specification,
The phrase “directly above or directly below the support shaft 3a that is the center of rotation of the pulley 2” means that the center axis in the longitudinal direction of the ceiling longitudinal member exactly coincides with the center line passing through the center of rotation, and from the center line. It is intended to include a case where the position is slightly shifted (about 1 to 3 mm).

Here, the suspension wire connecting portion 42a formed on the upper portion of the other holding member 42 is formed of four small holes. Therefore, when the suspending wire 5 is provided, as shown in FIG.
It can be fixedly arranged almost certainly. In addition, as in the present embodiment, in order to prevent the hanging wire 5 from coming off, the cover plate 43 that covers a part of the hanging wire 5 that has passed through the four small holes is further fixed by bolting. (See FIGS. 1 and 2).

Further, it is preferable to provide a bolt insertion hole 42e for arranging the pipe holding ring member 44 in the lower portion of the other holding member 42 as in the present embodiment (FIG. 1, FIG. 2 and 4). Depending on the greenhouse, the pipe holding ring member 44 may have a pipe member constituting the ceiling longitudinal member located lower than usual, and function as a pipe fixing portion in this case, and Play a role. However, also in this case, for the purpose of the present invention, the central axis along the pipe material provided at the ring portion of the pipe holding ring member 44 is parallel to the support shaft 3 of the pulley 2 and passes therebelow. Of course, it is provided in such a manner.

According to the relay pulley member according to the present embodiment, regardless of whether the ceiling longitudinal member is a pipe material or a wire, after arranging them at a predetermined position, one of the holding members 41 is formed. Bolt insertion hole 41f and other holding body 42
The bolt can be fixed to the ceiling longitudinal member only by aligning the bolt insertion hole 42b and fastening with the bolt 45 and the nut 46. Therefore, the operator does not need to select a fastening portion depending on the type of the ceiling longitudinal member as in the related art, which contributes to reducing the work load.

The holding members 41, 4 constituting the fixing portion 4
The arc centers of the second arc portions 41a and 42c and the arc center of the arc portion 3f of the mounting piece 3e of the casing 3 are provided in parallel with directly above or below the support shaft 3a which is the rotation center of the pulley 2. Therefore, when fixed to the ceiling longitudinal member, the pulley 2
Is located in parallel directly above or below the longitudinal center axis of the ceiling longitudinal member, so that there is no difference in the reach of each leading pipe when each curtain is closed.

[0026]

According to the relay pulley member of the curtain opening / closing device for a greenhouse of the present invention, when the rotation center of the pulley is fixedly arranged on the ceiling longitudinal member, it is positioned directly above or below the ceiling longitudinal member. Since it is provided, the reach distance of the leading pipe connected to each curtain from the ceiling longitudinal member can be made equal. Further, each holding body constituting the fixing part is
Because it can be fixed to the ceiling longitudinal member simply by tightening
Mounting work can be facilitated. Furthermore, since the hanging wire can be knitted and connected to the fixed portion, it is possible to prevent the hanging wire from being detached due to long-term use.

[Brief description of the drawings]

FIG. 1 is a perspective view showing one embodiment of a relay pulley member of the present invention.

FIG. 2 is a side view of the relay pulley member according to the embodiment.

FIG. 3 is an exemplary perspective view showing a first holding body constituting a fixing portion of the relay pulley member according to the embodiment;

FIG. 4 is an exemplary perspective view showing a second holding body constituting a fixing portion of the relay pulley member according to the embodiment;

FIG. 5 is a perspective view showing an example of a conventional relay pulley member.

FIG. 6 is a side view showing an example of a conventional relay pulley member.

FIG. 7 is a diagram for explaining an operation of the greenhouse curtain opening and closing device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Relay pulley member 2 Pulley 3 Casing 4 Fixed part 5 Hanging wire

Claims (5)

[Claims] The present invention has a function of relaying a traveling wire connected to a greenhouse curtain, provided around a side pulley member disposed near an upper portion on both sides of a greenhouse.
A relay pulley member of a curtain opening / closing device for a greenhouse, which is fixed to a long longitudinal member provided parallel to a side surface of the greenhouse and below the ceiling aggregate of the greenhouse, and is run while being supported by a casing. The center of rotation of the pulley around which the wire is wound is provided so as to be located directly below or directly above the longitudinal center axis of the ceiling longitudinal member when the fixing portion is fixed to the ceiling longitudinal member. The relay pulley member of the greenhouse curtain opening and closing device. 2. The fixing portion has a pair of holding members, and is fixed to the ceiling longitudinal member by the holding members, and a pair of holding members is fixed to a casing that supports the pulley. 2. The relay pulley member of a curtain opening / closing device for a greenhouse according to claim 1, wherein an attachment piece attached to one of the holding members is protruded. 3. The pair of two holding bodies are vertically provided with a pipe holding portion when the ceiling longitudinal member is a pipe material and a wire holding portion when the ceiling longitudinal member is a wire. A relay member of the curtain opening / closing device for a greenhouse according to the above. 4. The fixing part according to claim 1, further comprising a connecting part for a suspension wire connected to the ceiling aggregate.
A relay pulley member for a curtain opening / closing device for a greenhouse as described in the above item. 5. The hanging wire connecting portion has a plurality of small holes provided in one of a pair of two holding bodies constituting a fixed portion, and the hanging wire is provided in the small hole. The relay pulley member of the curtain opening / closing device for a greenhouse according to claim 4, wherein the relay pulley member is knitted and connected to the cable.