阅读说明：本技术 遮蔽装置的操作单元 (Operating unit for a screening device ) 是由 山岸万人 冈村正 于 2020-04-07 设计创作，主要内容包括：通过使用球链作为操作绳的遮蔽装置的操作单元实现平稳的操作。本发明提供一种具备遮蔽件的遮蔽装置的操作单元,其具备操作滑轮、操作绳以及导绳件,上述操作滑轮通过转动来操作上述遮蔽件,上述操作绳由球链构成,挂装于上述操作滑轮上,并朝向上述遮蔽装置的前方被引出,上述导绳件具有对上述操作绳的下侧部分进行引导的引导面,上述引导面在与上述操作绳的引出方向正交的宽度方向上形成有凹部。(A smooth operation is achieved by using a ball chain as an operation unit of the shade apparatus for operating the cord. An operation unit of a shielding device having a shielding member includes an operation pulley that operates the shielding member by rotating, an operation rope that is formed of a ball chain, is hung on the operation pulley, and is drawn out toward the front of the shielding device, and a rope guide that has a guide surface that guides a lower portion of the operation rope, the guide surface having a concave portion formed in a width direction orthogonal to a drawing direction of the operation rope.)

1. An operation unit of a shielding device provided with a shield, the operation unit being characterized in that,

comprises an operation pulley, an operation rope and a rope guide;

the operating pulley operates the shutter by rotating;

the operation rope is composed of a ball chain, is hung on the operation pulley and is led out towards the front of the shielding device;

the rope guide has a guide surface that guides a lower portion of the operation rope;

the guide surface has a recess formed in a width direction orthogonal to a drawing direction of the operation cord.

2. The operating unit according to claim 1,

the rope guide is formed to protrude toward the front lower side.

3. The operating unit according to claim 1 or 2, wherein,

the guide surface has a length in the drawing direction longer than the distance between the balls provided in the operation cord.

4. The operating unit according to any one of claims 1 to 3,

when the height of the ball provided in the operation cord in the direction orthogonal to the drawing direction is H and the depth of the recess is D, a relation of H/D ≦ 2.0 is satisfied.

5. The operating unit according to any one of claims 1 to 4,

the operation unit further includes a rope separator for separating an upper portion and a lower portion of the operation rope.

6. The operating unit according to claim 5,

the rope dividing member has an upper guide surface for guiding an upper portion of the operation rope;

the upper guide surface is formed with a concave portion in the width direction.

7. The operating unit according to any one of claims 1 to 6,

the cord guide is provided with buffer members for suppressing interference of the operation cord on both sides in the width direction.

8. The operating unit according to claim 7,

the operating pulley is accommodated in the upper beam;

the buffer member is disposed between the rope guide and the upper beam.

9. The operating unit according to any one of claims 1 to 8,

the recessed portion formed on the guide surface is provided in a shape that restricts movement of a ball provided in the operation cord in the width direction.

Technical Field

The present invention relates to an operating unit for a screening arrangement.

Background

In a shading device such as a horizontal blind, one end of a lift cord is attached to a bottom rail provided at a lower portion of a shade suspended from an upper beam, the other end of the lift cord is attached to a winding shaft, and the shade is lifted and lowered by winding and unwinding the lift cord by rotating the winding shaft.

In such a shielding device, the operation rope is hung on an operation pulley rotatably supported on the upper beam, the operation pulley is rotated by operating the operation rope drawn out from the rope gate, and the rotation is transmitted to the winding shaft, thereby rotating the winding shaft.

Patent document 1 discloses a rope gate that can prevent a guide member for guiding an operation rope drawn out from the rope gate from falling off when a shielding device is attached to a building.

Documents of the prior art

Patent document

Patent document 1: japanese patent laid-open publication 2015-132140

Disclosure of Invention

On the other hand, in the operation unit of the conventional shade device, when the ball chain is used as the operation cord, the operation cord comes into contact with the cord shutter during operation, and a noise is generated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to achieve smooth operation in an operation unit of a shade device using a ball chain as an operation cord.

According to the present invention, there is provided an operation unit of a shielding device including a shielding member, the operation unit including an operation pulley that operates the shielding member by rotation, an operation rope that is constituted by a ball chain and is hung on the operation pulley and drawn out toward the front of the shielding device, and a rope guide that has a guide surface that guides a lower portion of the operation rope, the guide surface having a recessed portion formed in a width direction orthogonal to a drawing direction of the operation rope.

With this configuration, since the recessed portion is formed in the guide surface for guiding the lower portion of the operation cord, the operation cord can be operated in a state where the ball of the ball chain is accommodated in the recessed portion, and the operation cord can be operated smoothly while suppressing the occurrence of abnormal noise.

Various embodiments of the present invention are exemplified below. The embodiments shown below can be combined with each other.

Preferably, the cord guide is formed to protrude downward.

Preferably, the guide surface has a length in the drawing direction longer than a distance between the balls provided in the operation cord.

Preferably, the height of the ball provided in the operation cord in a direction perpendicular to the drawing direction is H, and the depth of the recess is D, so that a relationship of H/D ≦ 2.0 is satisfied.

Preferably, the operation unit further includes a rope separator for separating an upper portion and a lower portion of the operation rope.

Preferably, the cord dispensing member has an upper guide surface for guiding an upper portion of the operation cord, and the upper guide surface has a concave portion formed in the width direction.

Preferably, the cord guide is provided with a buffer member on both sides in the width direction to suppress interference of the operation cord.

Preferably, the buffer member is provided between the rope guide and the upper beam.

Preferably, the recessed portion formed on the guide surface is formed in a shape that restricts movement of a ball provided in the operation cord in the width direction.

Drawings

Fig. 1 is a front view of a horizontal blind B in an embodiment of the present invention.

Fig. 2 is a plan view of the horizontal blind B.

Fig. 3 is a sectional view taken along line X-X in fig. 2.

Fig. 4 is an enlarged view of the periphery of the rope gate 15 in fig. 3.

Fig. 5 is a perspective view of the rope gate 15.

Fig. 6 is an exploded perspective view of the rope gate 15.

Fig. 7 is a front view showing the relationship between the rope guide 33 and the operation rope 7.

(symbol description)

1: upper beam

2: ladder rope

3: blade

4: bottom rail

5: lifting rope

6: operating unit

6 a: operating pulley

7: operating rope

8: drive shaft

9: winding shaft

11: support cover

13: rope insertion part

15: rope gate

21: ball with ball-shaped section

22: chain

32: rope distributing piece

33: rope guide

33 a: guide surface

Detailed Description

Hereinafter, embodiments of the present invention will be described. Various feature items shown in the embodiments shown below may be combined with each other. In addition, each feature may independently constitute the invention.

<1. Overall Structure >

In a horizontal blind B as a shielding device shown in fig. 1 and 2, a plurality of layers of blades 3 as a shielding material are suspended and supported via a plurality of ladder cords (ladder cord)2 suspended from an upper beam (head box)1, and a bottom rail 4 is suspended and supported at the lower end of the ladder cords 2.

Near the ladder cord 2, one or more lift cords 5 hang down from the upper beam 1, and the lift cords 5 hang down in front of the horizontal louver B (inside of the room) or behind the horizontal louver B (outside of the room). However, the present invention is not limited to this example, and may be configured such that: a through hole is formed in the center of the blade 3, and the lift cord 5 is inserted through the through hole. The lift cord 5 has an upper end wound around a winding shaft 9 disposed in the upper beam 1 and a lower end connected to the bottom rail 4.

The lift cord 5 is wound or unwound by the rotation of the winding shaft 9, and the bottom rail 4 and the blade 3 are lifted and lowered by the rotation. Further, the angle of each blade 3 is adjusted in the same phase via the ladder cord 2 by the rotation of a tilt drum (not shown) housed in the support cover 11. Note that, when each blade 3 rotates to a substantially vertical direction, it cannot rotate any further. A support cover 11 is attached to the winding shaft 9. The support cover 11 is detachably fixed to the upper beam 1.

An operation unit 6 is provided at an end of the upper beam 1 in the width direction of the horizontal blind B. The operation unit 6 includes an operation pulley 6a, a case cover 6b, a gear case 6c, a brake 6d, and an operation rope 7. The operation rope 7 is formed in an endless loop connected end to end, and is hung on the operation pulley 6 a.

The operating pulley 6a is rotatably supported between the case cover 6b and the gear case 6 c. When the operation rope 7 is operated to rotate the operation pulley 6a, the rotation is transmitted to the drive shaft 8 through the transmission gear housed between the gear box 6c and the brake 6d that holds the blade 3 from lowering by its own weight, and the windup shaft 9 rotates based on the rotation of the drive shaft 8.

A rope insertion portion 13 through which the operation rope 7 is inserted is formed in the upper beam 1 near the operation unit 6 by a rope gate 15. In the cord insertion portion 13, the operation cord 7 is drawn out from the inside of the upper beam 1 toward the front of the horizontal louver B, and the operation cord 7 is disposed so as to be operable.

<2. operation Unit 6>

Hereinafter, the operation unit 6 will be described in detail with reference to fig. 3 and 4. In order to make the description more clear, fig. 3 schematically shows the configuration of the operation pulley 6a and the like. As shown in fig. 3, the operation unit 6 includes the rope gate 15, the rope dividing member 32, and the rope guide 33 in addition to the above configuration.

The operation cord 7 is constituted by a ball chain including a ball 21 and a chain 22. The operation rope 7 is hung on an operation pulley 6a disposed in the upper beam 1, inserted into a rope insertion portion 13 formed by a rope gate 15, and drawn out to the outside of the upper beam 1.

A cord separator 32 for separating the operation cord 7 in the vertical direction is disposed at the center portion of the cord gate 15 in the vertical direction. The operation cord 7 is inserted through the cord shutter 15 in a state of being separated into the upper side portion 7a and the lower side portion 7 b. The rope distributor 32 includes a slope-like guide surface 32a, and the guide surface 32a guides the upper portion 7a of the operation rope 7. Here, since the rope gate 15 is interposed between the rope distributor 32 and the upper beam 1, it is possible to suppress the transmission of the vibration applied to the rope distributor 32 by the operation of the operation rope 7 to the upper beam 1.

The rope gate 15 is provided with a rope guide 33 at its lower end. The rope guide 33 includes a slope-like guide surface 33a, and the guide surface 33a guides the lower portion 7b of the operation rope 7.

The length of the guide surface 33a in the drawing direction (i.e., the length from the point P to the point Q in fig. 4) is configured to be longer than the interval between the balls 21 provided in the operation cord 7 (i.e., the length L in fig. 3). The length of the guide surface 33a in the drawing direction is preferably set so that three or more balls 21 can contact the guide surface 33 a. With this configuration, the curvature of the guide surface 33a in the drawing direction is prevented from fitting into the gap between the ball 21 and the ball 21, and interference between the guide surface 33a and the ball 21 can be suppressed.

The rope gate 15 is provided between the rope guide 33 and the upper beam 1. With this configuration, it is possible to prevent the vibration applied to the rope guide 33 by the operation of the operation rope 7 from being transmitted to the upper beam 1.

< 3> rope gate 15 and rope guide 33>

The rope gate 15 and the rope guide 33 will be described in detail below with reference to fig. 5 and 6. In fig. 5 and 6, the cord dividing member 32 is omitted for clarity of description.

The rope gate 15 includes an upper end portion 15a provided on the upper side and end portions 15b, 15b provided on both sides in the width direction. The upper end portion 15a and the end portion 15b are connected to each other, and a cord insertion portion 13 is formed between the end portions 15b, 15 b.

The end portion 15b is made of a low-hardness buffer member such as rubber, urethane, or silicon. When the operation cord 7 is operated, particularly when an operation (corresponding to an operation of lowering the blade 3) of pulling the lower portion 7b forward is performed, the operation cord 7 may swing left and right to contact the end portion 15b, which may cause abnormal noise. Therefore, by forming the end portion 15b with the buffer member, it is possible to suppress abnormal noise caused by interference between the end portion 15b and the operation cord 7 inserted into the cord insertion portion 13.

The cord guide 33 is disposed below the cord insertion portion 13 so as to be sandwiched between the end portions 15b and 15 b. The rope guide 33 is formed to protrude forward and downward of the rope gate 15, and is configured to be detachable from the rope gate 15.

The guide surface 33a is formed to curve forward and downward in a direction in which the operation cord 7 is drawn out (hereinafter referred to as a drawing-out direction). The guide surface 33a is further formed with a curved concave portion in a width direction (hereinafter simply referred to as a width direction) orthogonal to the drawing direction. Therefore, the ball 21 of the operation cord 7 drawn out from the cord insertion portion 13 is accommodated in the recess, and the generation of abnormal noise due to the contact of the ball 21 with the guide surface 33a can be suppressed. Further, since the rope guide 33 is configured to be detachable from the rope gate 15, the rope guide 33 can be replaced according to the size of the ball 21 of the operation rope 7.

<4 > the rope guide 33 and the ball 21>

Referring to fig. 7, the relationship between the cord guide 33 and the ball 21 will be described in detail. As shown in fig. 7, the operation cord 7 inserted through the cord insertion portion 13 is inserted through the cord insertion portion 13 in a state where the ball 21 of the lower portion 7b is accommodated in the recessed portion formed on the guide surface 33 a.

Here, the concave portion formed on the guide surface 33a is preferably in a shape that restricts the movement of the ball 21 in the width direction. In the example shown in fig. 7, the guide surface 33a is formed with a concave portion having an arc-shaped cross section, and the radius of curvature of the concave portion is set to be equal to or more than half the height (height H in fig. 7) of the ball 21. Formed by this. The ball 21 is positioned at the center in the width direction of the recess, so that the generation of abnormal noise due to the oscillation of the ball 21 in the recess can be suppressed.

As shown in fig. 7, in the operation cord 7 guided by the cord guide 33, the depth of the recess formed in the guide surface 33a (depth D in fig. 7) is preferably at least half of the height H of the ball 21 in the direction orthogonal to the drawing direction. That is, the relationship of H/D.ltoreq.2.0 is preferably satisfied.

The value of H/D is specifically, for example, any one of 0.2, 0.4, 0.6, 0.8, 1.0, 1.2, 1.4, 1.6, 1.8, and 2.0, or may be within a range between any two values exemplified here. With this configuration, the ball 21 can be reliably accommodated in the recess formed in the guide surface 33a, and generation of abnormal noise when the operation cord 7 is operated can be suppressed.

As described above, the operation unit 6 in the present embodiment includes the operation rope 7 formed of a ball chain and attached to the operation pulley 6a, and the rope guide 33. The rope guide 33 has a guide surface 33a that guides the lower portion 7b of the operation rope 7, and the guide surface 33a has a concave portion that is curved in the width direction orthogonal to the drawing direction.

With this configuration, since the operation cord 7 can be operated in a state where the ball 21 of the operation cord 7 is accommodated in the recessed portion of the guide surface 33a, it is possible to suppress generation of abnormal noise during operation, and smooth operation of the operation unit using the ball chain can be realized.

<5 > other embodiments

The application range of the technical idea of the present application is not limited to the above-described embodiments. For example, the second recessed portion may be further formed in the width direction orthogonal to the drawing direction on the guide surface 32a of the wire rope splitter 32. Accordingly, the ball 21 of the upper portion 7a of the operation cord 7 can be accommodated in the second concave portion formed in the guide surface 32a, and the occurrence of abnormal noise can be further suppressed when the operation cord 7 is operated.

In the above embodiment, the guide surface 33a is formed with a concave portion so as to have an arc-shaped cross section, but the present invention is not limited thereto. For example, the recessed portion may be formed so as to have a cross section in a V-shape, or the recessed portion may be formed so as to have a cross section in a trapezoidal shape. Such a shape can also suppress the generation of abnormal noise due to the ball 21 swinging in the recess.

The present invention is not limited to the horizontal blind, and is also applicable to various types of shade devices in which a shade is opened and closed on an operation side or a shade side using a cord made of a ball chain drawn from the upper beam 1. An example of the rope on the operation side is an operation rope, and an example of the rope on the shield side is a lift rope. Examples of such a shading device include a roll-up type curtain, a pleated curtain, a top roll curtain, a vertical blind, a curtain rail, an organ curtain, a vertical pleated curtain, a vertical roll curtain, and a plate type curtain.