JP2839051B2 - Partitions for painting work on aircraft, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition for a painting operation of an aircraft or the like.

[0002]

2. Description of the Related Art Conventionally, in a painting operation of an aircraft, a work area is surrounded by a partition in order to prevent a coating mist and solvent vapor from being dissipated. This partition is provided with antistatic in order to ensure the safety of work. For example, Japanese Patent Laid-Open No. 2-92844
In the device disclosed in Japanese Patent Application Laid-Open No. H11-209, an antistatic paint is applied to the surface of the curtain body made of inorganic fibers to prevent the static charge.

[0003]

However, antistatic agents and the like deteriorate in a relatively short period of time, resulting in high costs. Therefore, it is conceivable to use a conductive fiber cloth having a longer service life than an antistatic agent or the like as the curtain main body. However, forming the entire curtain main body with conductive fibers increases costs. Conventionally, the screen used for painting aircraft is usually 100
0 m ² for ~3000m a partition curtain large i.e. a large area, such as of ² degrees or the like, in the conventional partition curtain there is a problem that costly, it is desirable to reduce the cost of the partition curtain.

An object of the present invention is to solve the above-mentioned conventional problems and to provide a large-sized partition used for painting work on an aircraft or the like which can be manufactured at lower cost.

[0005]

In order to achieve this object, the present invention relates to a partition for painting work of an aircraft or the like, comprising a curtain body made of a woven or non-woven fabric of inorganic fibers and one or more conductive yarns. And a conductive fiber portion comprising a plurality of conductive fiber portions discretely provided on the curtain body at intervals of 30 to 50 mm.

[0006]

According to such a configuration, since a plurality of conductive fiber portions are separately provided on the curtain main body, it can be produced at a lower cost than when the entire curtain main body is made of conductive fibers. Also, since the static electricity charged on the partition can be weakly corona-discharged into the air via the conductive fiber portion, self-discharge of the partition at a high voltage can be prevented. In addition, if the conductive fiber portion is grounded, corona discharge of the partition can be prevented, so that the safety of work can be further improved.

In addition, the conductive fiber portion is formed on the curtain body in a length of 30 to 50 m.
m intervals, to prevent the electrification of the partition to the extent practically satisfactory in painting work such as aircraft, and,
The manufacturing cost of the partition can be reduced.

In practicing the present invention, a conductive fiber portion is formed by using a conductive yarn as a warp, and a conductive band-shaped member is provided on the curtain body so as to intersect with the conductive fiber portion. It is preferred to make an electrical connection via In this case, even if the conductive yarn breaks, the static electricity charged on the partition curtain, particularly the curtain main body, can be released from the broken portion of the conductive yarn to the ground via the belt-shaped member. Also, the same degree of antistatic effect can be expected as when the conductive fiber portion is formed by using the conductive yarn as the warp and the conductive fiber portion is further formed using the conductive yarn as the weft. In addition, since the conductive strip is provided instead of weaving the conductive fiber portion using the conductive yarn as the weft, the manufacturing cost can be reduced.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. The drawings are only schematically shown to the extent that the present invention can be understood, and thus the present invention is not limited to the illustrated examples.

FIG. 1 is a plan view schematically showing a configuration of a partition according to an embodiment of the present invention. Partition film 8 of this embodiment
Is provided with a curtain main body 10 and a conductive fiber portion 12, and a plurality of conductive fiber portions 12 are separately provided on the curtain main body 10.

In this embodiment, the curtain main body 10 is formed by using a non-combustible or flame-retardant warp yarn 14 and a weft yarn 16. These yarns 14 and 16 are, for example, glass fiber yarns and other inorganic fiber yarns. In addition, the conductive fiber portion 12 is connected to one conductive yarn 18.
It is formed using. The conductive yarn 18 is a metal fiber yarn, a carbon fiber yarn, or another yarn. In order to improve durability, the conductive yarn 18 is preferably a metal fiber yarn. In the drawing, the warp yarns 14 and the weft yarns 16 are shown by solid lines, and the conductive yarns 18 are shown by broken lines.

The partitioning curtain 8 is a woven fabric formed by weaving the warp yarns 14, the weft yarns 16 and the conductive yarns 18 in any suitable manner, for example, by plain weaving or satin weaving. Here, assuming that the longitudinal direction of the partition 8 is the warp direction, the partition 8 is preferably formed by using the conductive yarn 18 as the warp. Then, at the edge of the partition 8 in the weft direction, the weft 1
6 is turned (turned back) to form a weft warp weaving portion 16a at this edge. It is preferable that the warp yarns 14 and the conductive yarns 18 are prevented from fraying from the partition curtain 8 by the warp-woven portion 16a.

In this embodiment, the conductive fiber portion 12 is
Provided at intervals of 0 to 50 mm. By providing in this way, even if it is desired to lower the charge density of the partition, even if it is used particularly in aircraft painting work,
The production cost of the partition 8 can be reduced while preventing the partition 8 from being charged to a practically satisfactory level.

FIG. 2 is a diagram schematically showing the relationship between the arrangement interval of the conductive fiber portions and the charge density of the partition. In the figure, the horizontal axis indicates the arrangement interval (lines / m) of the conductive fibers 18 in this example, and the vertical axis indicates the charge density (μC / m ² ) of the partition 8. The arrangement pitch t (see FIG. 1) of the yarn 18 is 30 mm, 50 mm and 70 m.
The measured value of the charged charge density of the partition 8 in each case where m was plotted with black circles, and an approximate curve obtained from the measured values of the charge density is indicated by reference numeral C in the figure.

As can be understood from FIG. 2, the curve C is approximately a quadratic curve. By the way, as a general safety standard for preventing the occurrence of static electricity disasters in factories and business sites, "Technical Guideline for Industrial Safety Research Institute" (editor, Industrial Safety Research Institute, Ministry of Labor, published by Japan Industrial Safety Technology Association, Showa 59
Published on April 25, 2004, page 8). According to this criterion, the antistatic performance of the antistatic woven or knitted fabric / nonwoven fabric is such that the charged charge density is 7.0.
It is specified to be μC / m ² or less. However, in order to ensure the safety of a painting operation for a large device such as an aircraft, it is desirable that the charge density of the partition 8 be smaller. Therefore, in order to ensure higher safety, the safety factor is about 2 or more, and therefore, the charge density is 3.5 μC.
/ M ² or less, it can be seen that the arrangement pitch of the conductive yarn 18 of the partition 8 should be approximately 50 mm or less. On the other hand, a partition used for such an aircraft painting work is usually 1000 to 3000 as described above.
The area is as large as about m ² . Therefore, the amount of the conductive yarn used naturally increases, which leads to an increase in the cost of the partition.
From the viewpoint of keeping the cost of the partition curtain as low as possible, the arrangement pitch of the conductive yarns 18 is preferably set to about 30 mm or more. As described above, conventionally, it has been recognized that the arrangement pitch is 2.5 cm or less in order to effectively prevent the electrification. However, in the partition 8 of the present invention, as shown in FIG.
Based on the verification test, the pitch of the conductive yarn
Even if it is extended to the interval of 50 mm, the antistatic property of the partition can be reduced to a practically desired level, and the manufacturing cost of the partition can be reduced.

[0016]

In the above-described embodiment, the partition 8 is provided with the warp 1
4, the weft yarn 16 and the conductive yarn 18 are woven together, but the curtain main body 10 is made of non-woven fabric or the curtain main body 1
0 may be a woven fabric composed of the warp yarns 14 and the weft yarns 16, and the curtain main body 10 may be sewn with the conductive yarn 18 to form the partition curtain 8. Further, the conductive fiber portion 12 is not only composed of one conductive yarn 18 but also a plurality of conductive yarns 1.
8 may be used.

FIG. 3 is a front view schematically showing the configuration of another embodiment of the present invention, showing a state where a partition curtain is suspended at a work site. Components corresponding to the components of the above-described embodiment are denoted by the same reference numerals,
Detailed description of the same points as in the above-described embodiment will be omitted.

The partition 20 of this embodiment comprises the above-described partition 8 provided with conductive strips 22 and 24. The band-shaped member 22 is extended in a direction intersecting the conductive fiber portion 12, for example, in a weft direction, and provided at, for example, upper and lower edges and a center portion of the curtain body 10, and the adjacent conductive fiber portion 12 is electrically connected via the band-shaped member 22. . The belt-shaped member 22 is connected to the curtain main body 10 and the conductive fiber portion 12 via any suitable connecting means. Further, the belt-shaped member 24 is provided in, for example, the left and right edges and the center of the curtain main body 10 so as to extend in the direction along the conductive fiber portion 12, for example, in the warp direction. The band-shaped member 24 is connected to the curtain main body 10 and the band-shaped member 22, or to the conductive fiber portion 12 in addition thereto, via any suitable connecting means. It is preferable to arrange the strip members 22 and 24 separately. The band members 22 and 24 also serve as a reinforcing material of the partition 8.

It is to be noted that the partition 2 is formed by using one partition 8.
0 may be formed, or a plurality of partition films 8 may be connected to each other via any suitable connecting means such as a conductive thread or a conductive fastener to form a larger partition 20. When a plurality of partition films 8 are combined, it is preferable to electrically connect the conductive fiber portions 12 of these partition curtains 8 via the belt-like members 22 and 24 or a coupling means such as a conductive fastener.

Further, in this example, in order to suspend the partition curtain 20, the rail member 26 is connected to the floor or ground 28 of the work site.
To a position separated by a predetermined height from the
For example, a pulley is slidably attached to the rail member 26.
Then, the partition curtain 20 is attached to the suspending tool 30 via the connecting portion 32 and suspended.

FIG. 4 is an enlarged sectional view schematically showing an example of the configuration of the belt-shaped member and the connecting portion. Each of the belt-shaped members 22 and 24 has a base cloth 34a and a conductive film 34b.
The conductive film 34b is provided continuously from the front to the back of the base cloth 34a, or provided only on one of the front and the back of the base cloth 34a.
For example, the base cloth 34a is an inorganic fiber cloth and the conductive film 34b is a metal foil or a vapor-deposited film.
It is fixed to the base cloth 34a by sewing or other means.

Then, the belt-shaped members 22 and / or 24 are sewn by a suitable connecting means, for example, with a conductive thread 36, so as to be connected to and electrically connected to the conductive fiber portion 12. Further, the belt-shaped members 22 and 24 are connected to each other and electrically contacted, for example, by sewing with a conductive thread 36.

The connecting portion 32 is formed of a conductive holding member, for example, metal plates 32a and 32b.
Between these members 32a and 32b, the band-shaped members 22 and / or 24 of the partition 8 or, in addition thereto, the conductive fiber portion 1
2, and the connecting member 32 is electrically connected to the conductive fiber portion 12 directly or indirectly. These clamping and electrical connections may be made using any suitable means, for example bolts 3
6a and 36b are used.

The rail member 26 and the hanger 30 are made of a conductive material such as metal. In order to prevent electrification of the partition 20, the rail member 26 is grounded, and the
Is released to the ground via the conductive fiber portion 12, the belt-shaped members 22, 24, the connecting portion 32, the hanging member 30, and the rail member 26. Also, the band members 22 and 24 of the suspended partition 20 are brought into electrical contact with the ground 28 to make the partition 20
Of static electricity to the ground 28.

FIG. 5 is a cross-sectional view of a main part for explaining another method of suspending the partition curtain, and shows a state where the partition curtain is suspended using a winding drum. In the example shown in the figure, the band-shaped member 22 and / or the band-shaped member 24 located at the upper edge of the partitioning curtain 20 are wound around the winding drum 38 and the pressing member 40.
While holding the holding member 40 between the screws 42, for example.
The partition 20 is fixed to the winding drum 38 by these holding members 40 and the screws 42 so as to be detachable. The winding drum 38 is rotatably mounted on a shaft 44, and the shaft 44 is attached to the floor or ground 28 of the work site.
To a position separated by a predetermined height from When the work site is not partitioned off by the partition 20, the winding drum 38 is rotated forward to wind the partition 20 around the winding drum 38, and when the work site is partitioned by the partition 20, the winding drum 38 is Is reversed, and the partition 20 is unwound from the winding drum 38.

Pressing member 40, screw 42, winding drum 38
The shaft 44 has conductivity and is made of, for example, metal. The belt-shaped members 22 and / or 24 are electrically connected to the winding drum 38 via the holding member 40 and the screw 42. Further, the conductive fiber portion 12 of the partition curtain 20 comes into electrical contact with the surface of the winding drum 38. The winding drum 38 and the shaft 44 are also electrically connected to each other, so that the shaft 44 is grounded and the partition 2
Zero static electricity can be released to the ground.

FIG. 6 is a cross-sectional view of a principal part for explaining another method of suspending the partition curtain, and shows a state where the partition curtain is suspended using a winding drum. In the example shown in the figure, a groove 46 is provided on the winding drum 38 and a roped edge 48 is provided on the upper edge of the partitioning curtain 20.
The partition 20 is hung by locking the groove 8 in the groove 46.

The roped edge 48 comprises a bag-like portion 48a provided along the upper edge of the partition 20 and a rope 48b inserted into this portion 48a. The bag-like portion 48a is provided at the upper edge of the partition 20. It is formed by the belt-shaped member 22. A groove 46 is provided continuously from one end to the other end in the axial direction of the winding drum 38, and a roped edge 48 is formed from one end of the winding drum 38 to the other end. Inserted into 46, roped edge 48
And lock it. The groove 46 has a throttle portion 46a,
The roped edge 48 is caught and locked by the throttle portion 46a. With the roped edge 48 locked, the band-shaped member 22 in the groove 46 is in electrical contact with the wall surface of the groove 46 of the winding drum 38. The winding drum 38 is replaced with the groove 46.
May be provided.

When a plurality of partitions 8 formed by using inorganic fibers, particularly glass fibers, are combined to form a partition 20 and this partition 20 is wound around a winding drum 38, the connecting portion of the partition 8 is If the bulk is increased during winding, the bulk may damage the inorganic fibers. Therefore, it is preferable to connect the partitions 8 so that the connecting portions are not bulky. FIG. 7 shows an example of the joining method.

FIG. 7 is a perspective view showing an example of a method of connecting a partition using inorganic fibers. In the case where the partitioning curtains 8 formed by using inorganic fibers are connected to each other, the connecting points of the partitioning curtains 8 are connected to each other by, for example, zigzag stitching with a conductive thread 50 while abutting the end faces 8 a of the connecting points of the partitioning curtains 8. Sew. At this time, it is preferable to apply a relatively thin inorganic fiber patch cloth 51 to the joint of the partition 8 and sew the joint of the partition 8 together with the patch 51.
Note that the patch cloth 51 may or may not be used.

FIGS. 8 and 9 are a perspective view and a side view, respectively, schematically showing an example of a method of installing a partition on a work site when a winding drum is used. Indicates a state in which

The examples shown in these figures are examples in which a partition 20 is installed at a painting site of an aircraft, for example. In this example, a plurality of rail members 52 are provided at predetermined intervals on a painting site, and are provided, for example, standing upright. Then, the shaft 44 of the winding drum 38 is attached to the upper end of the rail member 52 via the upper arm 54. The shaft 44 of the winding drum 38 is attached to one end of the upper arm 54,
Is attached to the rail member 52. For example, a shaft 56 parallel to the shaft 44 is fixed at a predetermined position on the upper end of the rail member 52, and the other end of the upper arm 54 is fixed to the shaft 56 so as to be rotatable around the shaft 56. Then, the plurality of winding drums 38 are arranged at predetermined intervals, and each winding drum 38 is attached to the shaft 44. The winding drum 38 is rotated to wind and unwind the partition curtain 20. The winding drum 38 is connected to the shaft 44
And the shaft 44 is fixed to the upper arm 54 so as to be rotatable about the shaft 44, or the winding drum 38 is rotatably attached to the shaft 44, and the winding drum 38 is rotated.

Further, a rod-shaped leading member 58 also serving as a weight is fixed to the lower end of the partition 20 attached to the winding drum 38, and one end and the other end of the leading member 58 are respectively connected to the rail member 52 via the lower arm 60. Attach to The leading member 58 is fixed to one end of the lower arm 60 so as to be rotatable around its axis. Also, a guide groove 52a is provided in the rail member 52,
A sliding member such as a wheel 62 is slidably locked in the guide groove 52a. The lower arm 6 is attached to the shaft 62a of the wheel 62.
0 is fixed at the other end.

A sliding member, for example, a wheel 63 is disposed at a position where the rail member 52 is slidably in contact with the side portion 52 b on the winding drum 38 side, and the shaft 63 a of the wheel 63 is fixed to the lower arm 60. . The wheel 6 is located on the upper side of the side portion 52b.
A notch 52c is provided for retracting 3.

As shown in FIGS. 8 and 9, when the work site is partitioned by the partition 20, the partition 20 is unwound from the winding drum 38 until the lower arm 60 reaches the lower end of the guide groove 52a. Then, the upper arm 54 and the lower arm 60 are maintained at the extended positions extending in a direction intersecting with the rail member 52, for example, in a substantially horizontal direction.

FIGS. 10 and 11 are side views for explaining the operation of the upper arm and the lower arm.

When the work site is changed from a state where the work site is partitioned by the partition 20 (see FIG. 9) to a state where the work site is not partitioned by the partition 20 (see FIG. 11), as shown in FIGS. The lower arm 60 is guided by the guide groove 52 a of the rail member 52 while the partitioning curtain 20 is wound on the winding drum 38.
Move from bottom to top. Wheel 63 is notch 5
Until 2c, the lower arm 60 is supported in the guide groove 52a and the side portion 52b via the wheels 62 and 63, so that the lower arm 60 is maintained in the extended position extending substantially in the horizontal direction. Next, when the wheel 62 reaches the upper end of the guide groove 62a (the wheel 63 also reaches the notch 52c at this time), as shown in FIG.
0 is turned so as to stand in the direction along the rail member 52, for example, in a substantially vertical direction. At this time, the wheel 63 is retracted into the notch 52c so as not to hinder the rotation of the arms 54 and 60. Next, when almost the entire partition 20 has been wound on the winding drum 38, the upper arm 54 and the lower arm 60 are moved by a positioning mechanism (not shown).
The arm 54, 60, the partitioning curtain 20, and the winding drum 38 are held at a position which does not hinder operations such as movement of articles at a work site.

When the work site is not partitioned by the partition 20 (see FIG. 11) to be partitioned by the partition 20 (see FIG. 9), as shown in FIGS. The arm 54 and the lower arm 60 are rotated to fall from the standing position to the extended position. Then the upper arm 54
The partitioning arm 20 is unwound from the winding drum 38 while holding the arm at the extended position by a positioning mechanism (not shown), and the lower arm 60 is moved from the upper end to the lower end of the guide groove 52a. Next, as shown in FIG. 9, when the lower arm 60 reaches the lower end of the guide groove 52 a, the work site is partitioned by the partitioning curtain 20 while holding the lower arm 60 at the extending position that extends substantially in the horizontal direction.

The present invention is not limited only to the above-described embodiments. Therefore, the forming method, forming material, connecting means, connecting means, shape, size, arrangement position, number of arrangements, etc. Any suitable changes can be made.

[0041]

As is apparent from the above description, according to the partition for painting work of an aircraft or the like of the present invention, a plurality of conductive fiber portions are provided discretely on the curtain body made of inorganic fibers. Compared to a case where the entire curtain main body is made of conductive fibers, it can be manufactured at a lower cost. In addition, since the static electricity charged on the partition curtain can be corona-discharged at a low voltage in the air through the conductive fiber portion, it is possible to prevent the partition curtain from being spark-discharged at a high voltage. In addition, if the conductive fiber portion is grounded, corona discharge of the partition can be prevented, so that the safety of work can be further improved. Moreover, the conductive fiber part is 3
Since it is provided at intervals of 0 to 50 mm, when it is desired to lower the charged electric charge density of the partition, especially when used in the painting work of an aircraft, the partition can be prevented from being charged to a practically satisfactory level while preventing the partition from being charged. Curtain manufacturing costs can be reduced.

[Brief description of the drawings]

FIG. 1 is a plan view schematically showing a configuration of an embodiment of the present invention.

FIG. 2 is a diagram schematically showing a relationship between an arrangement interval of conductive yarns and a charge density.

FIG. 3 is a front view schematically showing the configuration of another embodiment of the present invention.

FIG. 4 is an enlarged cross-sectional view schematically illustrating a main part of a configuration of a belt-shaped member and a connecting portion.

FIG. 5 is a cross-sectional view of a main part schematically showing another example of a method for hanging a partition curtain.

FIG. 6 is a cross-sectional view of relevant parts schematically showing another example of a method for hanging a partition curtain.

FIG. 7 is a perspective view schematically showing an example of a method of connecting a partition using inorganic fibers.

FIG. 8 is a perspective view schematically showing an example of a method of installing a partition curtain.

FIG. 9 is a side view schematically illustrating an example of a method of installing a partition curtain.

FIG. 10 is a side view for explaining the operation of the upper arm and the lower arm.

FIG. 11 is a side view for explaining the operation of the upper arm and the lower arm.

[Explanation of symbols]

 8, 20: Partition curtain 10: Curtain body 12: Conductive fiber part 18: Conductive thread 22: Band-shaped member

Continuation of the front page (72) Inventor Tokusei Endo 10-13, Fuyuki, Koto-ku, Tokyo Ogawa Tent Co., Ltd. (56) References Japanese Utility Model 4-6690 (JP, U) Japanese Utility Model Utility Model Sho 63-85681 (JP, U) Japanese Utility Model 2-115581 (JP, U) Japanese Utility Model 1-43437 (JP, Y2) Japanese Utility Model 7-42526 (JP, Y2)

Claims (2)

(57) [Claims] 1. A curtain body comprising a woven or nonwoven fabric of inorganic fibers and a conductive fiber portion comprising one or more conductive yarns, wherein a plurality of conductive fiber portions are provided on the curtain body by 30 to 50 mm.
A partition for painting work on an aircraft or the like, characterized by being provided discretely at intervals. 2. A conductive fiber portion is formed by using a conductive yarn as a warp, and a conductive belt-shaped member is provided on the curtain body so as to intersect with the conductive fiber portion, and adjacent conductive fiber portions are electrically connected via the belt-shaped member. 3. The partition for painting work of an aircraft or the like according to claim 1, wherein the partition is formed by: