JP2013247887A - Partition net, fence and preserve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a partition net, a fence and a preserve which can achieve ensuring of rigidity and weight saving at the same time and can reduce algae attaching thereto while improving the durability.SOLUTION: A net fabric section 61 is formed into a net by using, as net yarn, a plurality of mixed threads 63 formed by doubling first yarn which includes: a core part comprising a polyester fiber material having a normal melting point having a predetermined melting point; and a casing part covering the outer periphery of the core part and comprising a polyester fiber material having a low melting point having a melting point lower than that of the fiber material having a normal melting point, and second yarn which comprises a fiber material having a normal melting point, and by fusion-bonding the plurality of mixed threads 63 to one another by fusing the casing part of the first yarn. The content rate of the first yarn with respect to the whole of mixed threads 63 is set to 15% or higher. In this manner, ensuring of rigidity and weight saving can be achieved at the same time.

Description

  The present invention relates to a partition net, a fence, and a ginger, and in particular, a partition net and a fence that can achieve both ensuring of rigidity and weight reduction and can reduce adhesion of algae while improving durability. And ginger.

  In order to prevent balls etc. from jumping out of the grounds such as schoolyards and grounds, there is a partition net formed by netting made of synthetic fiber filaments and metal wire rods. The extended fence is installed (for example, patent document 1, patent document 2). Moreover, the partition net | network is used also for the ginger used when cultivating fish etc. in the sea (for example, patent document 3).

Japanese Patent Laid-Open No. 05-106148 ([0006], figure] 1 etc.) Japanese Patent Laying-Open No. 2005-188164 ([0017], FIG. 1 etc.) JP 2001-190178 ([0002], [0004], etc.)

  Here, as a fence installed in a range from the ground to a predetermined height position, in order to prevent outsiders from entering the site, a partition net made of a highly rigid metal wire is extended. Many fences are used.

  However, a partition net formed of a metal wire (hereinafter referred to as “metal partition net”) is a partition net formed of mesh yarn made of synthetic fiber filaments (hereinafter “synthetic fiber partition net”). There is a problem that the weight per unit area increases. That is, a fence in which a metal partition net is extended needs to set a shorter installation interval of support columns for laying a wire or the like for extending the partition net than a fence in which a synthetic fiber partition net is extended. So the installation cost of the fence was high.

  In addition, when a metal partition net is used as a sacrifice, there is a problem that the partition net is easily corroded by seawater. On the other hand, when a synthetic fiber partition net is used as a sacrifice, the partition net is formed by knitting a net yarn obtained by combining synthetic fiber filaments by a method such as a knotless net or a Russell net. There is a problem that the contact area between the filament and seawater is widened, and the algae is likely to adhere to the partition net.

  The present invention has been made in order to solve the above-described problems, and it is possible to achieve both the securing of rigidity and weight reduction, and to reduce adhesion of algae while improving durability. It aims to provide partition nets, fences and ginger that can be made.

Means for Solving the Problems and Effects of the Invention

  According to the partition net according to claim 1, the mixed yarn combines the first yarn composed of the normal melting point fiber material and the low melting point fiber material made of synthetic fiber and the second yarn composed of the normal melting point fiber material. Since it is formed by threading, the weight per unit area of the mesh portion can be reduced as compared with a conventional metal partition net.

  Further, the first yarn is formed of a low melting point fiber material that covers a core portion made of a normal melting point fiber material having a predetermined melting point and an outer peripheral surface of the core portion and has a melting point lower than that of the normal melting point fiber material. And a mesh portion is formed into a net shape by melting the sheath portion of the first yarn and fusing the plurality of mixed yarns together, and the content ratio of the first yarn to the entire mixed yarn is 15 Since it is set to% or more, the rigidity of the netting portion can be increased as compared with a conventional synthetic fiber partition net.

  As described above, in the partition net according to claim 1, the mixed yarn is formed by the first yarn and the second yarn made of synthetic fiber, and the mesh portion melts the sheath portion of the first yarn to thereby mix the mixed yarn. Since they are formed by fusing each other, there is an effect that it is possible to achieve both ensuring of rigidity and weight reduction.

  As a result, when the partition net is used for a fence, it is possible to increase the deterrence of the outsider from entering the predetermined area by the fence by making the net portion difficult to cut, and the partition net is extended. Since it is possible to set a wide interval between the support columns for laying wires or the like, it is possible to reduce the installation cost of the fence.

  In addition, since the mixed yarn is formed by the first yarn and the second yarn made of synthetic fiber, when using the partition net as a fence, compared to a fence using a metal partition net, In addition, it is possible to reduce the impact sound generated when a ball or the like collides with the other, and to reduce the heat capacity, thereby making it easier to avoid burns when touching the net.

  Further, since the mixed yarn is formed by the first and second yarns made of synthetic fibers, when using a partition net as a ginger, compared to a ginger using a conventional metal partition net, It is possible to suppress the corrosion of the net part due to.

  Moreover, since the mesh portion is formed in a net shape by melting the sheath portion of the first yarn and fusing a plurality of mixed yarns together, when using a partition net as a ginger, conventional synthetic fibers Compared with ginger using a partition net made of metal, the contact area with seawater can be reduced.

  Thus, when the partition net according to claim 1 is used as a ginger, the contact area between the mixed yarn and seawater is improved while improving the durability by suppressing the corrosion of the net part by seawater. By making it small, there is an effect that adhesion of algae can be reduced.

  Moreover, since the mixed yarn is formed of the first yarn and the second yarn made of synthetic fiber, it is easier to avoid injuries to people, fish, etc. that collide with the netting portion than the metal partition net. There is an effect that can be done.

  According to the partition net according to claim 2, in addition to the effect produced by the partition net according to claim 1, the content of the first yarn with respect to the entire mixed yarn is set to 60% or less, so the stretchability of the mixed yarn There is an effect that can be secured. As a result, when a tensile force is applied to the mesh area due to a collision with a person or a ball or the flow of seawater, the tensile force can be buffered by the expansion and contraction of the mixed yarn. it can.

  According to the partition net according to claim 3, in addition to the effect of the partition net according to claim 1 or 2, since the normal melting point fiber material and the low melting point fiber material are made of polyester or polypropylene, for example, synthetic It is possible to avoid the use of a curing agent that is required when the resin is cured in the manufacturing process of a partition net or the like in which a fiber mesh thread is coated with a resin. Therefore, there is an effect that the use of the curing agent can prevent adverse effects on the environment.

  According to the partition net according to claim 4, in addition to the effect of the partition net according to any one of claims 1 to 3, the linear straight portion is attached to at least one side end of the mesh portion. Therefore, when constraining the partition net to the wire or the like, the straight portion can be attached along the wire or the like. Therefore, compared to the case where the mesh portion is attached to a wire or the like, there is an effect that the work of attaching the partition net to the wire or the like can be made more efficient.

  According to the partition net according to claim 5, in addition to the effect produced by the partition net according to claim 4, the straight portion is formed of a plurality of mixed yarns and is formed in a belt shape having a predetermined width dimension. Since the rigidity of the mixed yarn is set lower than that of the mesh portion, the straight portion can be easily wound around a wire or the like. Therefore, when attaching the straight part to a wire or the like, the partition net is firmly bound to the wire or the like by binding the straight part to the wire or the like with a string or the like while winding the straight part around the wire or the like. There is an effect that can be.

  According to the fence according to claim 6, since the ball-proof net includes the partition net according to any one of claims 1 to 5, compared to the case of using a metal net as the ball-proof net, The weight per unit area of the ball-proof net can be reduced. Therefore, since the installation interval of the support | pillar for constructing the wire etc. which extend a ball-proof net can be set widely, there exists an effect that the installation cost of a fence can be reduced.

  In addition, since the ball-proof net is provided with the partition net according to any one of claims 1 to 5, a ball or the like collides with the ball-proof net as compared with a case where a metal net is used as the ball-proof net. In addition to being able to reduce the impact sound that occurs when the ball is touched, there is an effect that it is easy to avoid burns when touching the ball-proof net by reducing the heat capacity. Furthermore, since the ball-proof net is provided with the partition net according to any one of claims 1 to 5, a person who collided with the net is injured compared to the case where a metal net is used as the ball-proof net. There is an effect that it can be easily avoided.

  According to the fence of the seventh aspect, in addition to the effect of the fence according to the sixth aspect, the side end portion on the lower side in the vertical direction of the lightweight net and the side end portion on the upper side in the vertical direction of the partition net are the first horizontal wires. The side end portions on both sides in the width direction of the lightweight net and the side end portions on both sides in the width direction of the partition net are constrained by the vertical wire, so that the lightweight net and the partition net are stretched on a common wire. Can be made. Therefore, there is an effect that the installation cost of the fence can be reduced.

  In addition, the vertical lower portion of the lightweight net and the vertical upper portion of the partition net are constrained with respect to the first horizontal wire installed at the predetermined height position, so that the partition net is upward from the predetermined height position. By installing a light weight net per unit area lighter than the specified height position, a highly rigid partition net is installed while reducing the burden on the wire and the struts for laying the wire. Thus, there is an effect that it is possible to increase the deterrence of an outsider's entry into the predetermined area.

  According to the fence according to claim 8, in addition to the effect of the fence according to claim 7, at least the straight portion attached to the side end portion on the upper side in the vertical direction of the mesh portion is restrained by the first horizontal wire. Therefore, when constraining the partition net to the wire or the like, the straight portion can be attached along the wire or the like. Therefore, compared to the case where the mesh portion is attached to the first horizontal wire, there is an effect that the operation of attaching the partition net to the first horizontal wire can be made more efficient.

  In addition, when the straight portion is formed of a plurality of mixed yarns and is formed in a band shape having a predetermined width dimension, and the rigidity of the mixed yarn is set lower than that of the netting portion, the straight portion Can be easily wound around the first horizontal wire. Therefore, when attaching the straight portion to the first horizontal wire, the straight portion is tied to the first horizontal wire with a string or the like while the straight portion is wound around the first horizontal wire, so that the partition net is attached to the first horizontal wire. There is an effect that it can be restrained firmly.

  According to the fence of the ninth aspect, in addition to the effect of the fence according to the seventh or eighth aspect, the partition net is constrained to the second horizontal wire that is laid along the horizontal direction below the first horizontal wire. Therefore, it can suppress that the vertical direction lower side part of a partition net turns up. Therefore, there is an effect that it is possible to suppress the ball or the like colliding with the lower part of the partition net from jumping out of the predetermined area by turning up the partition net.

  Further, since the second horizontal wire is installed below the first horizontal wire, that is, on the side close to the ground, the deterrent against an outsider entering the predetermined region through the second horizontal wire. There is an effect that can be increased.

  Moreover, since the mixed yarn is formed of the first yarn and the second yarn made of synthetic fiber, the mixed net can be grounded while being bent. That is, there is an effect that it is possible to easily perform dimensional management for grounding to the ground as compared with the case where the vertical lower portion of the metal partition net having high rigidity is grounded to the ground.

  According to the ginger according to claim 11, since the partition net according to any one of claims 1 to 5 is provided, the partition net is corroded by seawater as compared with a ginger using a conventional metal partition net. As compared with a ginger using a conventional synthetic fiber partition net, the contact area between the mixed yarn and seawater can be reduced. Therefore, there is an effect that adhesion of algae can be reduced by reducing the contact area between the mixed yarn and seawater while improving durability by suppressing corrosion by seawater. In addition, compared with a ginger using a metal partition net, there is an effect that it is possible to easily avoid the fish that collided with the partition net from being injured.

It is a front view of the fence in 1st Embodiment of this invention. It is the elements on larger scale of the fence in II part of FIG. (A) is the elements on larger scale of the fence in the IIIa part of FIG. 1, (b) is the side view of the fence seen from the IIIb direction of FIG. 3 (a). (A) is the elements on larger scale of the fence in the IVa part of FIG. 1, (b) is the top view of the fence seen from the IVb direction of FIG. 4 (a). (A) is a perspective view of the ginger in 2nd Embodiment, (b) is a side view of a ginger, (c) is a top view of a ginger.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. First, a schematic configuration of the fence 100 will be described with reference to FIG. FIG. 1 is a front view of a fence 100 according to the first embodiment of the present invention. In FIG. 1, in order to simplify the drawing and facilitate understanding, the main part of the fence 100 is schematically illustrated and a part of the fence 100 is omitted.

  As shown in FIG. 1, the fence 100 is provided around a site such as a school yard or a ball game field. By installing this fence 100, it is possible to prevent balls used inside the site from jumping out of the field and to prevent outsiders from entering the site.

  The fence 100 includes a plurality of struts 20, a plurality of wires 30 installed on the struts 20, and a ball-proof net 40 extended on the plurality of wires 30. In FIG. 1, in order to simplify the drawing and facilitate understanding, the mesh yarn and mesh of the ball-proof net 40 are enlarged and illustrated.

  The plurality of struts 20 are erected on the ground by being partially embedded in the ground, and are installed at regular intervals (for example, every 8 m) around the site.

  The plurality of wires 30 are members for extending the ball-proof net 40, and include a vertical wire 31 laid along the vertical direction, and a combined wire 32 laid along the horizontal direction at a predetermined height position. An upper wire 33 that is installed above the dual-purpose wire 32 along the horizontal direction, and a lower wire that is provided below the dual-purpose wire 32 and is disposed along the horizontal direction at a height that is a predetermined distance away from the ground. Wire 34.

  In the present embodiment, the height position of the dual-purpose wire 32 from the ground is set to 2 m, the height position of the upper wire 33 from the ground is set to 12 m, and the height position of the lower wire from the ground is set to 10 cm. However, the installation positions of the plurality of wires 30 may be changed as appropriate in the usage situation.

  The ball-proof net 40 includes an upper net 50 that extends upward from a predetermined height position, and a lower net 60 that extends downward from a predetermined height position.

  The upper net 50 is a net whose main purpose is for balls or the like used on the site to jump out of the field, and the side ends of the upper net 50 on both sides in the width direction (left and right direction in FIG. 1) are vertical wires 31. The side end portion on the upper side of the upper net 50 (upper side in FIG. 1) is restrained by the upper wire 33, and the side end portion on the lower side (lower side in FIG. 1) of the upper net 50 is also used at a predetermined height position. The wire 32 is restrained.

  The lower net 60 is a net whose main purpose is to prevent balls used in the site from jumping out of the field and to prevent outsiders from entering the site. The lateral end portions on both sides are constrained by the vertical wires 31, and the lateral end portions on the upper side of the lower net 60 (upper side in FIG. 1) are constrained by the dual-purpose wire 32 at a predetermined height position, and have predetermined dimensions from the ground. The lower net 60 is constrained by the lower wire 34 at a separated height position.

  Next, the configuration of the upper net 50 and the lower net 60 and the installation structure of the fence 100 will be described with reference to FIGS. FIG. 2A is a partially enlarged view of the fence 100 in the II portion of FIG. 3A is a partially enlarged view of the fence 100 in the IIIa portion of FIG. 1, and FIG. 3B is a side view of the fence 100 viewed from the IIIb direction of FIG. 3A. 4A is a partially enlarged view of the fence 100 in the IVa portion of FIG. 1, and FIG. 4B is a top view of the fence 100 viewed from the IVb direction of FIG. 4A.

  In order to simplify the drawing and facilitate understanding, only the main part is shown in FIG. 3 (b), and the lower net 60 and the lower wire 34 are schematically shown. In FIG. 4 (b), Only the main part is illustrated, and the lower net 60, the support column 20, and the vertical wire 31 are schematically illustrated.

  As shown in FIG. 2, the upper net 50 is a conventional net knitted with a yarn formed by combining polyester filaments, and has a lower weight per unit area than the lower net 60. ing. Therefore, compared to a conventional net using a metal wire (hereinafter referred to as a “metal net”), the weight can be reduced, so that a plurality of wires 30 for extending the upper net 50 can be installed. The installation interval of the plurality of columns 20 can be set wide, and as a result, the installation cost of the fence 100 can be reduced.

  The “weight per unit area” means the weight per unit area (for example, 1 m square) of the ball-proof net 40 in a normal use state of the ball-proof net 40 (a state where the mesh of the ball-proof net 40 is widened). Means.

  The lower net 60 includes a net portion 61 formed in a net shape, and straight portions 62 attached to side end portions on the upper side and the lower side of the net portion 61.

  The net part 61 is a part that forms the net of the lower net 60, covers a core part made of a normal melting point fiber material made of polyester having a predetermined melting point, and an outer peripheral surface of the core part and has a normal melting point A plurality of mixed yarns obtained by combining a first yarn having a sheath portion made of a polyester low-melting fiber material having a melting point lower than that of the fiber material and a second yarn made of a normal melting point fiber material. 63 is used as a mesh yarn, and the sheath portion of the first yarn is melted and a plurality of mixed yarns 63 are fused together to form a mesh.

  Thereby, since the rigidity of the mixed yarn 63 used for the net yarn of the net base portion 61 can be increased, a conventional net using net yarn made of synthetic fiber filaments such as polyester (hereinafter referred to as “synthetic fiber made”). Compared to the “net”, the mesh portion 61 can be made difficult to cut.

  In the present embodiment, the melting point of the normal melting point fiber material is set within a range of 230 ° C. or more and 260 ° C. or less, and the melting point of the low melting point fiber material is set within a range of 150 ° C. or more and 180 ° C. or less. However, the melting points of the normal melting point fiber material and the low melting point fiber material may be changed as appropriate according to the use situation. Further, the fineness of the first yarn and the fineness of the second yarn are set to be equal, and the ratio of the core portion to the sheath portion in the first yarn is set to 1: 1.

  Here, it is preferable that the mixed yarn 63 used for the mesh portion 61 is set so that the content ratio of the first yarn to the entire mixed yarn 63 is 15% or more and 60% or less.

  By setting the content ratio of the first yarn to the entire mixed yarn 63 to 15% or more, the rigidity of the mixed yarn 63 after melting the sheath portion of the first yarn can be ensured. Thereby, the mixed yarn 63 of the mesh portion 61 can be made difficult to be cut.

  Moreover, the stretchability of the mixed yarn 63 after melting the sheath portion of the first yarn can be ensured by setting the content ratio of the first yarn to the entire mixed yarn 63 to 60% or less. Thereby, when a tensile force is applied to the mesh portion 61 using the mixed yarn 63 as a mesh yarn due to a collision of a person or a ball, the tensile force can be buffered by the expansion and contraction of the mixed yarn 63. Therefore, the breakage of the mesh portion 61 can be suppressed.

  Further, since the mixed yarn 63 is formed of the first yarn and the second yarn made of polyester, the net portion 61 can reduce the weight of the lower net 60 compared to the metal net. As a result, the installation interval of the plurality of struts 20 for installing the plurality of wires 30 for extending the lower net 60 can be set wide, so that the installation cost of the fence 100 can be reduced.

  Accordingly, in the lower net 60, the mixed yarn 63 is formed by the first and second yarns made of polyester, and the mesh portion 61 melts the sheath portion of the first yarn to fuse the mixed yarn 63 together. Therefore, it is possible to achieve both the securing of rigidity and the weight reduction.

  In addition, since the mixed yarn 63 is formed of the first and second yarns made of polyester, it is possible to reduce the collision noise when a ball or the like collides with the mesh portion 61 as compared with the metal net. In addition, it is possible to easily avoid a person who collides with the mesh portion 61 from being injured or a ball or the like colliding with the mesh portion 61 from being damaged. Moreover, since the heat capacity of the mixed yarn 63 can be reduced as compared with that of metal, it is possible to easily avoid burns caused by touching the lower net 60.

  The straight portion 62 is formed of a plurality of mixed yarns 63 arranged side by side in a straight line and is formed in a belt shape having a predetermined width dimension. It is fused to the positioned mixed yarn 63. In the present embodiment, the straight portion 62 is composed of three mixed yarns 63, but the straight portion 62 may be composed of two or less or four or more mixed yarns 63 depending on the use situation. Good.

  Of the plurality of mixed yarns 63 used for the straight portion 62, the other mixed yarns 63 other than the one mixed yarn 63 located at the side end portions on the upper side and the lower side of the mesh portion 61 are fused. Further, the rigidity is set to be lower than that of the mixed yarn 63 of the mesh portion 61. Thereby, the linear part 62 can be made to bend more easily than the net part 61. FIG.

  Here, a method for manufacturing the lower net 60 will be described. First, as a mixed yarn manufacturing step, a plurality of mixed yarns 63 are manufactured by combining the first yarn and the second yarn.

  Subsequent to the mixed yarn manufacturing process, as a mixed yarn arranging process, a plurality of mixed yarns 63 are arranged in accordance with the shapes of the mesh portion 61 and the straight portion 62 to be manufactured.

  At this time, a portion of the mesh portion 61 is alternately brought into contact with a part of the mixed yarn 63 positioned on both sides while being spaced apart from each other, and a plurality of turtle shell-like meshes are formed as a whole. The mixed yarn 63 is arranged in a meandering manner.

  When the adjacent mixed yarns 63 are brought into contact with each other, by increasing the contact area, the fusion force between the adjacent mixed yarns 63 can be strengthened. In the present embodiment, five courses per one place are alternately brought into contact with the mixed yarns 63 located on both sides with an interval of eight courses. The mesh shape is not limited to the turtle shell shape, and may be a lattice shape. Moreover, according to the intended purpose, you may set suitably the magnitude | size of a mesh, and the contact area of the adjacent mixed yarns 63 per location.

  The portion that becomes the straight portion 62 includes the one mixed yarn 63 while bringing the one mixed yarn 63 into contact with the mixed yarn 63 located on the upper and lower side ends of the portion that becomes the netting portion 61. A plurality of mixed yarns 63 are arranged in a straight line.

  Following the mixed yarn placement step, as a net forming process, the placement of the mixed yarn 63 in the mixed yarn placement step is maintained and the melting point is higher than the melting point of the low melting point fiber material using a tenter, and the normal melting point fiber material It is heated at a temperature lower than the melting point (eg, 200 ° C.). As a result, the sheath portion of the first yarn is melted, and the plurality of mixed yarns 63 are fused to each other through the melted sheath portion of the first yarn, so that the mesh portion 61 and the straight portion 62 are formed. .

  In addition, when performing heating by the tenter, the mixed yarn 63 used for the straight portion 62 positioned at the upper and lower side end portions of the mesh portion 61 is heated more than the mixed yarn 63 used for the mesh portion 61. Since the fusion force of the mixed yarn 63 due to the melting of the sheath portion of the first yarn is reduced, the straight portion 62 is set to have a lower rigidity of the mixed yarn 63 than the mesh portion 61.

  Here, in the present embodiment, the straight portion 62 is formed together with the net portion 61 in the net portion forming step, but only the net portion 61 or one of the net portion 61 and the straight portion 62 is formed in the net portion forming step. After forming the portion, as the straight portion forming step, the first yarn is used for the mixed yarn 63 that is located at the upper and lower side ends of the mesh portion 61 or the mixed yarn 63 that constitutes a part of the straight portion 62. The mixed yarn 63 whose sheath portion is not melted may be attached in a straight line by a method such as knitting or adhesion. Thereby, the rigidity of the mixed yarn 63 used for the straight portion 62 can be set lower.

  Next, the installation structure of the fence 100 will be described. A dual-purpose wire 32 is installed at a predetermined height position, and both the side end portion on the lower side of the upper net 50 and the side end portion on the upper side of the lower net 60 are constrained by the dual-purpose wire 32. Further, the vertical wire 31 (see FIG. 1) constrains the side end portions on both sides in the width direction of the upper net 50 and the side end portions on both sides in the width direction of the lower net 60.

  Here, a fence installed in a range from the ground to a predetermined height position is conventionally a metal having higher rigidity than a net made of synthetic fiber, from the viewpoint of deterring the outsider's entry into the site. Many made nets were used.

  However, since a metal net is heavier per unit area than a synthetic fiber net, when using a metal net for a fence, a wire or the like for extending the metal net is installed. It is necessary to set the interval between the columns to be short. Therefore, when a metal net is installed side by side with the upper net 50, a wire or the like for extending the metal net is installed separately from the support column 20 for installing the wire 30 on which the upper net 50 is extended. It is necessary to additionally install a support post to increase the installation cost of the fence.

  On the other hand, by extending the lower net 60 using the mixed yarn 63 formed of the polyester first yarn and the second yarn as a mesh yarn within a range from the ground to a predetermined height position, the metal The weight can be reduced compared to the net made of steel. Thereby, since the lower net 60 can be extended using the vertical wire 31 and the combined wire 32 used when the upper net 50 is extended, it is not necessary to additionally install the support column 20. As a result, the installation cost of the fence 100 can be reduced.

  Further, when the fence 100 is provided between the ground where the ball game or the like is performed and the spectator seat, the number of the support columns 20 can be reduced as compared with the case where a metal net is used for the fence, and therefore, the fence 100 is in the spectator seat. When the spectator watches a ball game or the like performed on the ground, the range in which the sight line of the spectator is blocked by the support 20 can be reduced.

  In addition, by extending the lower net 60 having a net portion 61 having a higher rigidity than the synthetic fiber net within a range from the ground to a predetermined height position, it is possible to prevent outsiders from entering the site. Can be increased.

  Furthermore, since the upper net 50 that is lighter in weight per unit area than the lower net 60 is extended above the predetermined height position, the burden on the support column 20 and the wire 30 can be reduced.

  Further, since the straight portion 62 is formed on the upper side end portion of the lower net 60, when the lower net 60 is attached to the dual purpose wire 32, the straight portion 62 is taken along the dual purpose wire 32. Can be worn. Thereby, compared with the case where the net yarn of the mesh base 61 is attached to the dual purpose wire 32, the attachment work of the lower net 60 to the dual purpose wire 32 can be made more efficient.

  Furthermore, the linear portion 62 is formed of a plurality of mixed yarns 63 so as to be formed in a belt shape having a predetermined width dimension, and the rigidity of the mixed yarn 63 is set lower than that of the mesh portion 61. The straight portion 62 can be easily wound around the combined wire 32. Therefore, when attaching the straight portion 62 to the dual-purpose wire 32, the straight portion 62 is wound around the dual-purpose wire 32 and the straight portion 62 is fastened to the dual-purpose wire 32 with the string 64, so that the lower net 60 is connected to the dual-purpose wire 32. Can be firmly restrained.

  As shown in FIGS. 3A and 3B, the lower net 60 has a lower wire 34 in a state in which a vertically lower portion (the lower portion in FIG. 3B) of the lower net 60 is in contact with the ground. Are bound by a string 64. By grounding the lower net 60 to the ground, it is possible to prevent a ball or the like rolling on the ground from jumping out of the site surrounded by the fence 100.

  Here, since the mixed yarn 63 is formed of the first yarn and the second yarn made of polyester, the lower net 60 can be grounded to the ground in a state where the vertical lower portion of the lower net 60 is bent. . Therefore, dimensional management can be easily performed as compared with a case where a vertically lower portion of a highly rigid metal net is grounded to the ground.

  In addition, since the straight portion 62 is attached to the side end portion of the netting portion 61 in the lower vertical direction, fraying of the mixed yarn 63 located at the side end portion in the lower vertical direction can be suppressed.

  Furthermore, since the lower net 60 is restrained by the lower wire 34 installed at a height position away from the ground by a predetermined dimension, it is possible to suppress the vertical lower portion of the lower net 60 from turning up. Therefore, it is possible to suppress a ball or the like colliding with the lower portion of the lower net 60 from jumping out of the site by turning up the lower net 60.

  Furthermore, since the lower wire 34 is installed in a position close to the ground, it is possible to increase deterrence against an outsider from passing through the lower wire 34 and entering the site.

  Note that the lower portion of the lower net 60 that contacts the ground may be fixed to the ground with a U-shaped nail or the like.

  As shown in FIGS. 4A and 4B, when the lower net 60 is fixed to the vertical wire 31, it is more than the side end portion in the width direction of the lower net 60 (FIG. 4A left-right direction). The mesh portion 61 located on the inner side in the width direction is folded back while being wound around the vertical wire 31, and the mesh portions 61 are mutually connected with a string (not shown) in a state where the mesh positions of the opposite mesh portions 61 are aligned. BDSM.

  Thereby, compared with the case where the side end portion in the width direction of the lower net 60 is constrained to the vertical wire 31, the size in the width direction of the one lower net 60 and the both side portions in the width direction of the one lower net 60 are constrained. Since it is possible to easily adjust the dimensional error with respect to the installation interval of the two vertical wires 31, the size management of the lower net 60 can be easily performed. Moreover, the aesthetics of the extended lower net 60 can be improved by aligning the positions of the meshes of the opposite mesh portion 61.

  In FIG. 4 (a), in order to simplify the drawing, one of the two mesh sections 61 that overlap when facing each other is not shown.

  Next, a second embodiment will be described with reference to FIG. In 1st Embodiment, although the case where the partition net in this invention was used for the fence 100 was demonstrated, in 2nd Embodiment, the case where the partition net in this invention is used for the ginger 200 is demonstrated. In addition, the same code | symbol is attached | subjected to the part same as 1st Embodiment mentioned above, and the description is abbreviate | omitted.

  FIG. 5A is a perspective view of the ginger 200 according to the second embodiment, FIG. 5B is a side view of the ginger 200, and FIG. 5C is a top view of the ginger 200. . In FIG. 5A, the enclosure net 210 is not shown in order to simplify the drawing and facilitate understanding.

  As shown in FIGS. 5 (a) to 5 (c), the ginger 200 is a net for partitioning the inside and the outside of a predetermined area in the sea when fish and the like are cultivated in the sea, and is formed in a net shape. Main enclosure 210 and a plurality of braids 220 to which the enclosure 210 is attached.

  The enclosure net 210 is a part that forms the net of the ginger 200. The enclosure net 210 is formed in a net shape by using a plurality of mixed yarns 63 as the net yarn, melting the sheath portion of the first yarn and fusing the plurality of mixed yarns 63 together, and the bottom surface of the ginger 200 A bottom net part 211 forming a part and a side net part 212 forming a side part of the ginger 200 are provided.

  The braid 220 includes an upper brace 221 that restrains the upper side end portion of the side net portion 212, and a lower brace rope that restrains the lower side end portion of the side net portion 212 and the side end portion of the bottom net portion 211. 222, a side rope 223 connected to the upper rope 221 and the lower rope 222 and restricting the side net 212, and a bottom rope 224 connected to the lower rope 222 and restricting the bottom net 211. And.

  The upper rope 221 and the side rope 223 are parts fixed to a frame or a buoy (not shown) installed in the sea via a rope or the like (not shown). Further, the lower braid 222 and the bottom braid 224 are so-called sago ropes partially made of lead, and are portions that function as weights for sinking the bottom net portion 211 in the sea.

  Here, in the enclosure net 210, the mixed yarn 63 is formed of the first and second yarns made of polyester, so that the enclosure net 210 is corroded by seawater as compared with the conventional ginger using a metal wire. Can be suppressed. Therefore, the durability of the enclosure net 210 can be improved, and it is possible to easily avoid the injury of fish and the like that collide with the enclosure net 210.

  Further, since the enclosure net 210 is formed in a net shape by melting the sheath portion of the first yarn and fusing the mixed yarn 63 together, a conventional mesh net made of filaments of synthetic fibers such as polyester is used. Compared with ginger, the contact area between the mixed yarn 63 and seawater can be reduced. Therefore, the adhesion of algae to the enclosure net 210 can be suppressed.

  Thus, in the ginger 200, the mixed yarn 63 is formed of the first and second yarns made of polyester, and the enclosure net 210 melts the sheath portion of the first yarn to fuse the mixed yarn 63 together. Since it is shape | molded by this, the adhesion of the algae to the enclosure net | network 210 can be suppressed, aiming at the improvement of durability of the enclosure net | network 210. FIG.

  In addition, the shape of the ginger 200 in this Embodiment is an example, and you may change the shape of a ginger suitably according to a use condition.

  As described above, the present invention has been described based on the embodiments, but the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily guessed.

  For example, in each of the above-described embodiments, the case where the normal melting point fiber material and the low melting point fiber material are made of polyester has been described, but may be made of polypropylene.

  In each of the above-described embodiments, the case where the partition net is used for the fence 100 or the ginger 200 has been described. However, the present invention is not necessarily limited to this, and is extended below other uses, for example, a scaffold at a construction site. It may be used for a safety net or an anti-breast net that prevents the invasion of wild animals and the like into the site.

  In each of the above embodiments, the case where the fineness of the first yarn and the fineness of the second yarn are set to be equal, and the ratio of the core portion to the sheath portion in the first yarn is set to 1: 1 has been described. However, the present invention is not necessarily limited to this, and the fineness of the first yarn and the fineness of the second yarn may be set to be different from each other, and the ratio of the core portion and the sheath portion in the first yarn is the present embodiment. It may be set to a ratio different from the form.

  In each of the embodiments described above, the content of the first yarn relative to the entire mixed yarn 63 has been described as being set to 60% or less. However, the present invention is not necessarily limited to this, and the entire mixed yarn 63 is not limited to this. The content rate of the first yarn with respect to may be set higher than 60%. For example, the content rate of the first yarn relative to the entire mixed yarn 63 may be 100%, that is, the mixed yarn 63 may be formed of only the first yarn. Thereby, the rigidity of the mixed yarn 63 can be increased.

  In the first embodiment, the case where the linear portion 62 is formed by a plurality of mixed yarns 63 has been described. However, the present invention is not limited to this, and a mesh yarn made of a filament different from the mixed yarn 63 is used. You may use, and the mixed yarn 63 used for the mesh part 61 may use the mixed yarn in which the content rate with respect to the whole mixed yarn 63 of the 1st yarn differs in the linear part 62. FIG. For example, by making the content rate of the first yarn with respect to the entire mixed yarn used for the straight portion 62 smaller than the content rate of the first yarn with respect to the entire mixed yarn 63 used for the mesh portion 61, the first yarn After the sheath portion is melted, the rigidity of the mixed yarn 63 used for the straight portion 62 can be set lower than that of the mixed yarn 63 used for the mesh portion 61.

  In the first embodiment, the case where the lower net 60 is bound to the plurality of wires 30 by the string 64 has been described. However, the present invention is not necessarily limited to this. A plurality of wires 30 may be restrained. Examples of other means include a wire, an adhesive tape, and a press fitting.

100 Fence 20 Post 30 Wire 31 Vertical Wire 32 Combined Wire (First Horizontal Wire)
34 Lower wire (second horizontal wire)
40 ballproof net 50 upper net (lightweight net)
60 Lower net (partition net)
61 Net part 62 Straight line 63 Mixed yarn 200 Ginger 210 Enclosure net (net part)

Claims (11)

In the partition net that partitions the inside and the outside of the predetermined area,
From a low melting point fiber material made of a synthetic fiber having a melting point lower than that of the normal melting point fiber material while covering a core part made of a normal melting point fiber material made of a synthetic fiber having a predetermined melting point and an outer peripheral surface of the core part A sheath of the first yarn, formed by a plurality of mixed yarns formed by combining a first yarn having a sheath portion configured and a second yarn composed of the normal melting point fiber material. A net portion formed into a net shape by melting the portion and fusing the mixed yarns together,
The mixed yarn is characterized in that the content of the first yarn with respect to the entire mixed yarn is set to 15% or more.   The partition net according to claim 1, wherein the mixed yarn has a content ratio of the first yarn with respect to the entire mixed yarn set to 60% or less.   The partition net according to claim 1 or 2, wherein the normal melting point fiber material and the low melting point fiber material are made of polyester or polypropylene.   The partition net according to any one of claims 1 to 3, further comprising a linear straight portion attached to at least one side end of the mesh portion.   The straight portion is formed of the plurality of mixed yarns to be formed in a belt shape having a predetermined width dimension, and the rigidity of the mixed yarn is set to be lower than that of the netting portion. The partitioning net according to claim 4. In a fence that is provided around a predetermined area, including a plurality of pillars that are erected on the ground, a plurality of wires that are laid on the plurality of pillars, and a ball-proof net that is stretched on the plurality of wires.
The fence characterized in that the ball-proof net includes the partition net according to any one of claims 1 to 5. The ball-proof net includes a lightweight net that is lighter in weight per unit area than the partition net,
The plurality of wires includes a first horizontal wire constructed along a horizontal direction at a predetermined height position, and a vertical wire constructed along a vertical direction,
The side end portion on the lower side in the vertical direction of the lightweight net and the side end portion on the upper side in the vertical direction of the partition net are restrained by the first horizontal wire, and the side end portions on both sides in the width direction of the lightweight net and the The fence according to claim 6, wherein a side end portion on both sides in the width direction of the partition net is constrained by the vertical wire. The partition net includes a straight portion attached to a side end portion on at least the vertical direction upper side of the mesh portion,
The fence according to claim 7, wherein the straight portion is constrained by the first horizontal wire. The plurality of wires includes a second horizontal wire that is laid along the horizontal direction below the first horizontal wire,
The fence according to claim 7 or 8, wherein the partition net is constrained by the second horizontal wire.   The fence according to any one of claims 6 to 9, wherein a vertical lower portion of the partition net is in contact with the ground. In the ginger used when cultivating fish etc. within a predetermined area in the sea,
A ginger comprising the partition net according to any one of claims 1 to 5.

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