JP7632505B2 - Laminated Sheet - Google Patents

Description

This invention relates to a wiring member that includes a linear transmission member and a sheet member.

Patent document 1 discloses a configuration in which coated electric wires are arranged in parallel on a soft resin sheet. As a means for joining the coated electric wires to the soft resin sheet, a heat and pressure welding means is disclosed.

Japanese Utility Model Application Publication No. 58-192408

It is preferable to select a soft resin sheet made of a material suitable for bonding with the coated electric wire. For example, it is assumed that the coated electric wire and the soft resin sheet are bonded by a heat and pressure welding means. In this case, it is preferable to use a soft resin sheet to which the coating of the coated electric wire can be easily welded, for example, a resin that is the same as the resin material of the coating.

However, if a soft resin sheet is selected that is suitable for bonding to a coated electric wire, it may be inferior in other performance. In this case, it is possible to overlap another sheet on the soft resin sheet to compensate for the other performance.

However, depending on the material combination of the soft resin sheet and the other sheet, it may not be possible to securely attach the two together.

The present invention aims to make it possible to securely fix an electric wire by overlapping a second sheet member on a first sheet member to which the electric wire is fixed.

To solve the above problem, the laminated sheet includes a first sheet member and a second sheet member fixed to the other main surface side of the first sheet member, and a space is formed in one of the first sheet member and the second sheet member that can be filled by melting the other sheet member, and the first sheet member and the second sheet member are superimposed in a solidified state in which the other of the first sheet member and the second sheet member has melted and filled the space in the one of the first sheet member and the second sheet member.

The first sheet member and the second sheet member are overlapped in a state in which one of the spaces between the first sheet member and the second sheet member is melted, filled, and solidified, so that the first sheet member and the second sheet member can be firmly overlapped and fixed. In addition, since the first sheet member and the second sheet member can be overlapped regardless of the adhesiveness due to chemical interaction, for example, the first sheet member can be made of a material suitable for fixing to another member, and the second sheet member can be configured to ensure another function.

FIG. 2 is a schematic perspective view showing a wiring member according to the embodiment. 2 is a partial cross-sectional view taken along line II-II in FIG. 1 is an explanatory diagram showing a process for manufacturing a wiring member. FIG. 13 is a schematic perspective view showing a wiring member according to a first modified example. FIG. 11 is a schematic perspective view showing a wiring member according to a second modified example. FIG. 4 is a partial cross-sectional view showing a wiring member according to a modification of the above embodiment; 11 is an explanatory diagram showing an example in which a material that changes color due to heat is provided on a wiring member; FIG.

The wiring member and laminate sheet according to the embodiment are described below.

Figure 1 is a schematic perspective view showing the wiring member 10, and Figure 2 is a partial cross-sectional view taken along line II-II in Figure 1.

The wiring member 10 includes a linear transmission member 20 and a laminated sheet 30. The laminated sheet 30 is configured by laminating a first sheet member 32 and a second sheet member 36.

The linear transmission member 20 may be any linear member that transmits electricity or light, etc. For example, the linear transmission member 20 may be a general electric wire having a core wire and a coating around the core wire, or may be a shielded wire, an enameled wire, a nichrome wire, an optical fiber, etc. The linear transmission member that transmits electricity may be any of various signal lines and various power lines. The linear transmission member that transmits electricity may be used as an antenna, a coil, etc. that sends signals or power to or receives them from space.

Here, the linear transmission member 20 will be described as a general electric wire 20 (hereinafter, simply referred to as electric wire 20). The electric wire 20 has a core wire 24 as a transmission line body and an insulating coating 26 as a coating 26 that covers the core wire 24. Each description of the electric wire 20 is applicable to each example of the linear transmission member 20, except for configurations that are not applicable.

The core wire 24 is composed of one or more strands. The strands are made of a conductor such as copper, copper alloy, aluminum, or aluminum alloy. When the core wire 24 is composed of multiple strands, the multiple strands may be twisted together. The insulating coating 26 is formed by extruding a resin material such as PVC (polyvinyl chloride) or PE (polyethylene) around the core wire 24. Here, the electric wire 20 is a so-called round electric wire with a circular cross section.

Here, multiple electric wires 20 (three in FIG. 1) are fixed in parallel to the laminated sheet 30. There may be one electric wire 20 or multiple electric wires 20. The electric wire 20 may be fixed in a bent state on the laminated sheet 30. Multiple electric wires 20 may be fixed to the laminated sheet 30 so that they branch out along the way.

The laminate sheet 30 is a sheet-like member on whose main surface 31 the electric wire 20 is fixed. By fixing the electric wire 20 on the main surface 31 of the laminate sheet 30, the electric wire 20 is held along a predetermined path on the main surface 31. The laminate sheet 30 may be flexible enough to be easily bent, or may be a member having a degree of rigidity that allows it to maintain a certain shape.

The laminated sheet 30 is configured by laminating a first sheet member 32 and a second sheet member 36.

The first sheet member 32 is a sheet-like member. Here, the first sheet member 32 is formed in an elongated rectangular shape. The electric wire 20 is fixed to one main surface 33 of the first sheet member 32.

The second sheet member 36 is a sheet-like member. Here, the first sheet member 32 is formed in an elongated rectangular shape. The second sheet member 36 is fixed in a superimposed state to the other main surface 34 of the first sheet member 32.

Here, the first sheet member 32 and the second sheet member 36 have the same shape, and the second sheet member 36 is fixed to the entire other main surface 34 of the first sheet member 32. The first sheet member may be larger than the second sheet member, and the second sheet member may be fixed to a portion of the other main surface of the first sheet member. Conversely, the first sheet member may be smaller than the second sheet member, and the first sheet member may be fixed to a portion of one main surface of the second sheet member.

Since the electric wire 20 is fixed to the first sheet member 32, the first sheet member 32 is a member more suitable for fixing the electric wire 20 than the second sheet member 36.

If a material suitable for fixing the electric wire 20 is used as the first sheet member 32, there is a risk that some functions may be insufficient or insufficient. Therefore, the second sheet member 36 reinforces or adds some functions of the first sheet member 32.

The manner in which the electric wire 20 is fixed to the first sheet member 32 may be by fixing at a contact portion, by fixing at a non-contact portion, or by using both.

Here, the contact part fixation means that the contact part between the linear transmission member (electric wire 20) and the first sheet member 32 is stuck and fixed. Also, the non-contact part fixation means a fixing mode that is not a contact part fixation, for example, another fixing member presses the linear transmission member (electric wire 20) toward the first sheet member 32, and maintains the linear transmission member (electric wire 20) and the first sheet member 32 in a fixed state.

The manner of fixing the contact parts may be indirect fixing of the contact parts, direct fixing of the contact parts, or both may be used in different regions. Here, indirect fixing of the contact parts means that the linear transmission member (electric wire 20) and the first sheet member 32 are indirectly attached and fixed via an intervening member such as an adhesive, a pressure sensitive adhesive, or a double-sided adhesive tape provided between them. Direct fixing of the contact parts means that the linear transmission member (electric wire 20) and the first sheet member 32 are directly attached and fixed without using a separate adhesive or the like. In direct fixing of the contact parts, for example, it is considered that the resin contained in at least one of the linear transmission member (electric wire 20) and the first sheet member 32 is melted to attach and fix them.

When such a state of direct fixation of the contact areas is formed, the resin may be melted, for example, by heat or by a solvent. In other words, the state of direct fixation of the contact areas may be a state of direct fixation of the contact areas by heat or a state of direct fixation of the contact areas by a solvent. Preferably, the state of direct fixation of the contact areas is a state of direct fixation of the contact areas by heat.

At this time, the means for forming the state of direct fixation of the contact parts is not particularly limited, and various means including known means such as welding, fusion, and welding can be used. For example, when forming the state of direct fixation of the contact parts by heat by welding, various welding means such as ultrasonic welding, heat and pressure welding, hot air welding, and high frequency welding can be used. In addition, when the state of direct fixation of the contact parts is formed by these means, the linear transmission member (electric wire 20) and the first sheet member 32 are in a state of direct fixation of the contact parts by that means. Specifically, for example, when the state of direct fixation of the contact parts is formed by ultrasonic welding, the linear transmission member (electric wire 20) and the first sheet member 32 are in a state of direct fixation of the contact parts by ultrasonic welding. The part where the state of direct fixation of the contact parts by heat is formed by welding (the fixed part between the linear transmission member (electric wire 20) and the first sheet member 32) may be called the welded part, the part fixed by ultrasonic welding may be called the ultrasonic welded part, and the part fixed by heat and pressure welding may be called the heat and pressure welded part, etc.

In the case of direct fixation of the contact area, only the resin contained in the coating of the linear transmission member (electric wire 20) may be melted, or only the resin contained in the first sheet member 32 may be melted. In these cases, the melted resin may adhere to the outer surface of the other and become solidified, forming a relatively clear interface. In addition, in the case of direct fixation of the contact area, both the resin contained in the coating of the linear transmission member (electric wire 20) and the resin contained in the first sheet member 32 may be melted. In this case, the two resins may mix together and not form a clear interface. In particular, when the coating of the linear transmission member (electric wire 20) and the first sheet member 32 contain resins that are easily compatible with each other, such as the same resin material, the two resins may mix together and not form a clear interface.

Examples of non-contact part fixation include using sewing thread, another sheet material, adhesive tape, etc. to press the linear transmission member (electric wire 20) against the first sheet member 32, thereby maintaining the linear transmission member (electric wire) and the sheet material in a fixed state.

Given the above fixing modes, the significance of the first sheet member 32 being a member more suitable for fixing the electric wire 20 than the second sheet member 36 can be considered, for example, as follows.

As an example of indirect fixation of contact parts, a mode in which the linear transmission member (electric wire 20) and the first sheet member 32 are adhesively fixed to each other via an adhesive member such as a pressure sensitive adhesive or double-sided adhesive tape provided between them can be considered. In this case, the first sheet member 32 is a member more suitable for fixing the electric wire 20 than the second sheet member 36, and it can be considered that when an adhesive member is adhered to the first sheet member 32 and the second sheet member 36, the adhesive member has a stronger adhesive force to the first sheet member 32 than to the second sheet member 36. In general, the adhesive member has a weak adhesive force to members having rough surfaces or surfaces on which fine structures exist in a separable manner, such as nonwoven fabric.

As an example of indirect fixation of contact parts, consider a mode in which the linear transmission member (electric wire 20) and the first sheet member 32 are fixed by an adhesive provided between them. In this case, it can be considered that the first sheet member 32 has a stronger adhesive force than the second sheet member 36 to an adhesive suitable for bonding the linear transmission member (electric wire 20). In general, adhesives exhibit good adhesion to members with good compatibility (affinity), and in particular, they exhibit good adhesion to resins of the same type, so it is preferable that the coating of the linear transmission member (electric wire 20) and the first sheet member 32 are made of the same type of resin.

As an example of direct fixation of the contact parts, a case where the linear transmission member (electric wire 20) and the first sheet member 32 are fixed by melting and solidifying the resin surface of at least one of them is considered. As described above, the resin surface of at least one of the linear transmission member (electric wire 20) and the first sheet member 32 may be melted by heat or by a solvent. In this case, it may be considered that the adhesive strength when at least one of the resin surface (coating) of the linear transmission member (electric wire 20) and the resin surface of the first sheet member 32 melts and solidifies to stick to each other is greater than the adhesive strength when at least one of the resin surface (coating) of the linear transmission member (electric wire 20) and the resin surface of the second sheet member 36 melts and solidifies to stick to each other. In general, if the resin materials have good compatibility (affinity), they will show good adhesive strength when at least one of them melts, and in particular, if the resin materials are of the same system, they will show good adhesive strength. For this reason, it is preferable that the surface portion (coating) of the linear transmission member (electric wire 20) and the first sheet member 32 are made of the same type of resin. In other words, it is preferable that the compatibility between the resin of the surface portion of the linear transmission member and the resin of the first sheet member 32 is better than the compatibility between the resin of the surface portion of the linear transmission member and the resin of the second sheet member 36.

As an example of non-contact part fixing, a sewing thread may be used to sew the linear transmission member (electric wire 20) to the first sheet member 32 while surrounding the linear transmission member (electric wire 20). In this case, the first sheet member 32 is less likely to tear than the second sheet member 36 due to the sewing thread, and therefore the linear transmission member (electric wire 20) sewn to the first sheet member 32 by the sewing thread may be considered to be more firmly fixed than the linear transmission member sewn to the second sheet member 36 by the same configuration.

As an example of non-contact part fixing, a sheet material, adhesive tape, etc. is fixed to the first sheet member 32 while covering the linear transmission member (electric wire 20), thereby fixing the linear transmission member (electric wire 20) to the first sheet member 32. In this case, if another sheet material, adhesive tape, etc. is fixed to the first sheet member 32 via an adhesive material, it may be considered that the adhesive force of the other sheet material, adhesive tape, etc. to the first sheet member 32 is greater than the adhesive force to the second sheet member 36.

The above-mentioned ideas regarding the fixing manner between the covering of the linear transmission member (electric wire 20) and the first sheet member 32 can be applied to each of the following modes: the pressing sheet material is fixed to the first sheet member 32 with an adhesive; the pressing sheet material is fixed to the first sheet member 32 with sewing thread; and the pressing sheet material is fixed by melting the resin surface of at least one of the sheet material or the first sheet member 32.

In summary, the first sheet member 32 is more suitable for fixing the linear transmission member (electric wire 20) than the second sheet member 36 in the following way. That is, when the linear transmission member (electric wire 20) is fixed to the first sheet member 32 and the second sheet member 36 in the same configuration, the fixing force of the linear transmission member (electric wire 20) to the first sheet member 32 is greater than the fixing force of the linear transmission member (electric wire 20) to the second sheet member 36.

Here, an example will be described in which the linear transmission member (electric wire 20) is directly fixed to the first sheet member 32 at the contact site, more specifically, the resin surface of at least one of the linear transmission member (electric wire 20) and the first sheet member 32 melts and solidifies, thereby fixing the linear transmission member (electric wire 20) to the first sheet member 32.

In this case, as described above, the adhesive strength when at least one of the resin surface (coating) of the linear transmission member (electric wire 20) and the resin surface of the first sheet member 32 melts and solidifies to bond the two together may be considered to be greater than the adhesive strength when at least one of the resin surface (coating) of the linear transmission member (electric wire 20) and the resin surface of the second sheet member 36 melts and solidifies to bond the two together.

As long as the above conditions are met, the material constituting the first sheet member 32 is not particularly limited. For example, the first sheet member 32 is formed from a material containing resin such as PVC (polyvinyl chloride), PET (polyethylene terephthalate), or PP (polypropylene). The appropriate material can be selected in relation to the material of the resin surface (coating) of the linear transmission member (electric wire 20).

As described above, it is preferable that the resin surface (coating) of the linear transmission member (electric wire 20) and the first sheet member 32 are made of the same type of resin. For example, if the coating 26 of the electric wire 20 is made of a resin whose main component is PVC (polyvinyl chloride), it is preferable that the first sheet member 32 is made of a resin whose main component is PVC (polyvinyl chloride).

Here, the first sheet member 32 is a sheet-like member whose inside is uniformly filled .

As described above, if the material of the first sheet member 32 is selected from the viewpoint of suitability for fixing the electric wire 20, some functions that are desirable as a wiring member may be insufficient or may lack some functions.

For example, consider the case where the first sheet member 32 is formed from a resin mainly composed of PVC (polyvinyl chloride) to match the material of the coating 26 of the electric wire 20, as described above. In this case, since PVC (polyvinyl chloride) is a resin that easily stretches, it cannot fully withstand the tensile force applied to the wiring member 10, and the tensile force may act too strongly on the electric wire 20 itself.

Therefore, the second sheet member 36 is superimposed and fixed to the first sheet member 32. The second sheet member 36 is selected for the purpose of supplementing or adding some function to the first sheet member 32, so it is possible that a material that is not suitable for fixing the electric wire 20 is selected. The first sheet member 32 is selected to be suitable for fixing to the electric wire 20, so it is possible that the second sheet member 36 is not suitable for fixing to the first sheet member 32 in a superimposed state.

For example, as described above, the first sheet member 32 is selected to be made of a resin mainly composed of PVC (polyvinyl chloride) in accordance with the material of the coating 26 of the electric wire 20. In this case, since the first sheet member 32 is easily stretched, it is preferable to select a material that is less likely to stretch as the second sheet member 36. For example, the second sheet member 36 is selected to be made of a resin that is less likely to stretch, such as PP (polypropylene), PET (polyethylene terephthalate), or PE ( polyethylene ).

Then, it is considered to fix the first sheet member 32 and the second sheet member 36 by melting the resin surface of at least one of them. In this case, the first sheet member 32 formed from a resin mainly composed of PVC (polyvinyl chloride) does not easily adhere to the second sheet member 36 formed from a resin such as PP (polypropylene), PET (polyethylene terephthalate), or PE ( polyethylene ), and the two may easily peel off from each other.

Therefore, the second sheet member 36 is made of the first sheet member 32 which has been melted to form a fillable space, and the first sheet member 32 is melted, fills the space in the second sheet member 36, and solidifies, leaving the first sheet member 32 and the second sheet member 36 superimposed.

Here, a nonwoven sheet member is used as the second sheet member 36. The nonwoven sheet member is a member formed in a sheet shape by intertwining a plurality of fibers 37 without weaving. If a resin less stretchable than the resin constituting the first sheet member 32, such as PP (polypropylene), PET (polyethylene terephthalate), PA (polyamide), or PE ( polyethylene ), is used as the fibers 37, the nonwoven sheet member itself becomes less stretchable. Therefore, by overlapping and bonding the second sheet member 36 formed by such a nonwoven sheet member to the first sheet member 32, the laminated sheet 30 itself becomes less stretchable. The nonwoven sheet member may contain an adhesive resin called a binder. The adhesive resin has a melting point lower than the melting point of the fibers 37 and serves to bond the fibers 37 together. The adhesive resin may cover all or a part of the plurality of fibers, or may be mixed in a fibrous or granular form separately from the fibers.

The second sheet member 36 formed by the nonwoven sheet member has spaces 38 formed between the multiple fibers 37. These spaces 38 are the spaces 38 that can be filled by the first sheet member 32 melting.

It is preferable to set the melting point of the second sheet member 36 formed by the nonwoven sheet member higher than the melting point of the first sheet member 32. That is, in order to melt and fill the spaces 38 of the second sheet member 36 formed by the nonwoven sheet member with the first sheet member 32, it is preferable that the spaces 38 remain uncollapsed when the first sheet member 32 is in a melted state. To achieve this, it is preferable to set the melting point of the fibers 37 of the second sheet member 36 higher than the melting point of the first sheet member 32.

For example, the first sheet member 32 could be made of a resin whose main component is PVC (polyvinyl chloride), which has a melting point of 85 to 210 degrees, and the fibers of the second sheet member 36 could be made of PP (polypropylene), which has a melting point of approximately 250 degrees.

It is not essential that the melting point of the fibers 37 is higher than that of the first sheet member 32. The melting point of the adhesive resin does not have to be higher than that of the first sheet member 32. The melting point of the second sheet member 36 is the temperature of the main portion (fibers 37) that forms the space 38.

The first sheet member 32 and the second sheet member 36 can be overlapped and fixed together, for example, as shown in FIG. 3.

First, the first sheet member 32 and the second sheet member 36 are prepared. Then, the first sheet member 32 and the second sheet member 36 are overlapped and sandwiched between the first press member 50 and the second press member 52. A heater 54 is provided on at least one of the first press member 50 and the second press member 52. The heater 54 is preferably provided at least on the side of the first press member 50 that presses the first sheet member 32 so that it can mainly heat the first sheet member 32.

When the first sheet member 32 and the second sheet member 36 are pressed and heated in a stacked state by the first press member 50 and the second press member 52, at least a portion of the first sheet member 32 melts. The melted portion of the first sheet member 32 then flows into the spaces 38 of the fibers 37 of the second sheet member 36, filling the spaces 38.

After this, when the heating is stopped, the portion of the first sheet member 32 that melted and filled the space 38 solidifies, and the first sheet member 32 and the second sheet member 36 are fixed in an overlapping state.

When the first sheet member 32 is heated, the entire first sheet member 32 may melt, or only a portion of the side closer to the second sheet member 36 may melt. The melted portion of the first sheet member 32 may fill only the space 38 on the first sheet member 32 side of the second sheet member 36, or may fill the space 38 throughout the entire thickness of the second sheet member 36. In FIG. 2, the first sheet member 32 melts, fills the space 38 on the first sheet member 32 side of the second sheet member 36, and solidifies, and at least a portion of the space 38 remains in the portion of the second sheet member 36 away from the first sheet member 32.

The first sheet member 32 and the second sheet member 36 may be fixed over their entire contact surfaces or at partial fixed points or areas.

The wire 20 may be fixed to the first sheet member 32 before the first sheet member 32 and the second sheet member 36 are fixed, or after the first sheet member 32 and the second sheet member 36 are fixed. When the first sheet member 32 and the second sheet member 36 are fixed after the wire 20 is fixed to the first sheet member 32, the first sheet member 32 and the second sheet member 36 may be pressurized and heated while avoiding the fixing location of the wire 20.

The material, properties, etc. of the second sheet member 36 vary depending on the functionality that is desired to be added or supplemented to the first sheet member 32. For example, if the purpose is to supplement or add soundproofing, cushioning, etc., the second sheet member 36 may be a nonwoven sheet member made of easily stretchable fibers. Also, for example, if the purpose is to supplement or add rigidity, etc., the second sheet member 36 may be a sheet with higher rigidity than the first sheet member 32.

With the wiring member 10 and laminated sheet 30 configured in this manner, the first sheet member 32 is a member that is more suitable for fixing the electric wire 20 than the second sheet member 36, so the electric wire 20 can be firmly fixed to the first sheet member 32.

In addition, since the first sheet member 32 is melted and filled into the space 38 of the second sheet member 36 and then solidified, the first sheet member 32 and the second sheet member 36 are overlapped, and the first sheet member 32 is fixed to the second sheet member 36 by the anchor effect, increasing the peel strength, and the two can be firmly overlapped and fixed. In other words, since the first sheet member 32 and the second sheet member 36 are fixed mainly by physical action, the second sheet member 36 can be made of any material without considering the chemical adhesive strength to the electric wire 20 and the first sheet member 32, and it is easy to add or supplement any desired function.

Furthermore, if the melting point of the first sheet member 32 is set higher than that of the second sheet member 36, when the first sheet member 32 and the second sheet member 36 are pressed and heated in a superimposed state, the first sheet member 32 is likely to melt while spaces 38 remain in the second sheet member 36. Therefore, the first sheet member 32 melts and fills the spaces 38 in the second sheet member 36, making it easy to fix them in a solidified state. This allows the first sheet member 32 and the second sheet member 36 to be more reliably and firmly superimposed and fixed.

In addition, since the first sheet member 32 is a sheet-like member whose inside is filled uniformly, it is easy to stably fix the linear electric wire 20 to the first sheet member 32. In addition, since the second sheet member 36 is a nonwoven sheet member, many spaces 38 are formed between the entangled fibers 37, and the melted first sheet member 32 easily fills the many spaces 38. In addition, since the fibers 37 are in a complex state inside the melted first sheet member 32, it is difficult for the melted first sheet member 32 to escape from the spaces 38 between the fibers 37. Therefore, the first sheet member 32 and the second sheet member 36 can be firmly overlapped and fixed.

In addition, the first sheet member 32 melts and fills the space on the first sheet member 32 side of the second sheet member 36, which is a nonwoven sheet member, and then solidifies, and spaces 38 remain in the portion of the second sheet member 36 away from the first sheet member 32, so that the protective and soundproofing properties of the nonwoven sheet member can be obtained.

In addition, if the resin material of the first sheet member 32 and the resin material (the material of the coating 26) on the surface of the linear transmission member (electric wire 20) are made of the same type of resin, it is easier to firmly fix the surface (coating 26) of the linear transmission member (electric wire 20) to the first sheet member 32.

For example, if the surface portion of the linear transmission member (the coating 26 of the electric wire 20) and the first sheet member 32 are made of a resin mainly composed of polyvinyl chloride, the two can be firmly fixed together. If the second sheet member 36 is made of a resin less stretchable than the first sheet member 32 (e.g., less stretchable PP (polypropylene), PET (polyethylene terephthalate), PE ( polyethylene ), etc.), the laminated sheet 30 as a whole can be made less stretchable. When a tensile force is applied to the wiring member 10, the laminated sheet 30 can receive the tensile force, and the tensile force is less likely to act on the electric wire 20.

{Modification}
Based on the above embodiment, various modifications will be described.

In the above embodiment, an example has been described in which the first sheet member 32 is a sheet-like member whose interior is uniformly filled , and the second sheet member 36 is a nonwoven sheet member.

Conversely, as in the wiring member 110 according to the first modified example shown in Fig. 4, the first sheet member 132 to which the electric wire 20 is fixed may be a nonwoven sheet member, and the second sheet member 136 may be a sheet-like member whose inside is uniformly filled . Even in this case, if the first sheet member 132 is suitable for fixing the electric wire 20, the electric wire 20 can be firmly fixed to the first sheet member 132, and the first sheet member 132 and the second sheet member 136 can be firmly overlapped and fixed.

For example, the coating 26 of the electric wire 20 and the first sheet member 132, which is a nonwoven sheet member, may be made of the same resin material such as polyvinyl chloride (PVC), making the two a suitable combination for fastening. Also, for example, the second sheet member 136 may be made of PP (polypropylene), PET (polyethylene terephthalate), PE ( polyethylene ), or the like, which is less likely to stretch, to add resistance to stretching.

In other words, the first sheet member to which the electric wire is fixed may be a member having gaps, and the second sheet member may melt, fill the gaps, and solidify.

In addition, in the above embodiment, the second sheet member 36 having the space 38 is a nonwoven sheet member, but the second sheet member may be any member having a space that the first sheet member can melt, fill, and solidify.

For example, in a wiring member 210 according to a second modified example shown in Fig. 5, a mesh-like member is used as the second sheet member 236. Fig. 5 shows a state before the second sheet member 236 is fixed to the first sheet member 32. The mesh-like second sheet member 236 has spaces 238 between the linear members combined lengthwise and widthwise. In other words, the mesh is the space 238. The second sheet member 236, like the above embodiment, adds or complements a function to the first sheet member 32. For example, the second sheet member 236 may be formed of PP (polypropylene), PET (polyethylene terephthalate), PE ( polyethylene ), metal, or the like, which are difficult to stretch.

As in the above embodiment, when the first sheet member 32 and the second sheet member 236 are overlapped and pressurized and heated, the first sheet member 32 melts and fills the spaces 238 (mesh) of the second sheet member 236 and solidifies, as shown in FIG. 6. This allows the wires 20 to be firmly fixed to the first sheet member 32, while also allowing the first sheet member 32 and the second sheet member 236 to be firmly overlapped and fixed.

The second sheet member may be any sheet in which a space is formed, and may be a mesh as described above, or a woven fabric in which threads are combined lengthwise and widthwise, or a woven fabric made of woven threads. Since spaces are formed between the combined or woven threads in a woven fabric or mesh fabric, the first sheet member can be melted and filled into the spaces and solidified. The second sheet member may also be a sheet in which a hole penetrating from the front to the back, or a bottomed depression is formed, and the internal space of the hole or the bottomed depression is made into a space that the first sheet member melts to fill and solidify.

When the electric wire 20 and the first sheet member 32 are melted and fixed together by heat, it is preferable to be able to check whether heat has been applied firmly to the electric wire 20 and the first sheet member 32 and whether they are firmly fixed together.

To achieve this, as in the wiring member 310 shown in FIG. 7, a material that changes color due to heat may be provided in at least one of the first sheet member 32, which is the sheet to which the electric wire 20 is fixed, and the coating 26 (the resin that forms the surface of the linear transmission member) of the electric wire 20. The material that changes color due to heat may be mixed into the material that forms the first sheet member 32 or the coating 26, or may be attached to their surfaces.

It is preferable that the material that changes color due to heat changes color at a predetermined temperature equal to or higher than the temperature to which the contact portion between the electric wire 20 and the first sheet member 32 should be heated when the electric wire 20 and the first sheet member 32 are fixed by heat (for example, the lower of the melting point of the electric wire 20 and the melting point of the first sheet member 32).

The material that discolors due to heat may be one that discolors irreversibly or reversibly. In order to inspect whether heat has been applied properly to the electric wire 20 and the first sheet member 32 even after a certain amount of time has passed since processing, it is preferable that the material that discolors due to heat is one that discolors irreversibly. If the material that discolors due to heat is one that discolors reversibly, it is advisable to inspect it visually during or immediately after the thermal processing, or with an image processing inspection device that has the function of capturing an image with a camera and extracting the discolored areas.

As materials that change color irreversibly, compound pigments containing cobalt, nickel, copper, etc., which change color due to a change in composition caused by thermal decomposition, etc., can be used. For example, materials known as irreversible thermochromic paints can be used as such materials.

As a material that changes color reversibly, paint that utilizes physical changes such as transition of the crystal system of a compound can be used. For example, paint that uses mercuric iodide (II) salt can be used. As such a material, for example, what is known as irreversible thermochromic paint (Thermocolor, Temp-Alarm, Thermopaint, etc.) can be used.

In this example, when the electric wire 20 and the first sheet member 32 are heated and fixed together, the area 350 where heat has been applied thoroughly will discolor due to the heat. In contrast, the area 352 where heat has been applied thoroughly will either retain its original color or will discolor to a lesser extent. This makes it possible to visually confirm that the wires have not been fixed together by applying heat thoroughly.

In FIG. 7, the electric wire 20 is fixed to the first sheet member 32 at multiple points, but the electric wire 20 may be fixed to the first sheet member 32 over its entire longitudinal direction.

This configuration is not limited to the wiring member 10 described in the above embodiment, but can be widely applied when fixing a linear transmission member (electric wire 20) to a sheet-like member.

At least one of the first sheet member 32 and the second sheet member 36 may be provided with a material that changes color when exposed to heat, so that when the two are fastened together, it is possible to check whether heat has been applied to the desired location or area.

The configurations described in the above embodiment and each modified example may be appropriately combined as long as they are not mutually contradictory. For example, the first modified example and the second modified example may be combined to use a mesh-like member as the first sheet member to which the electric wire 20 is fixed, and a sheet-like member with a uniformly filled interior may be used as the second sheet member.

Although the present invention has been described in detail above, the above description is merely illustrative in all respects and does not limit the present invention. It is understood that countless variations not illustrated can be envisioned without departing from the scope of the present invention.

This disclosure discloses the following aspects:

The wiring member according to the first aspect comprises a linear transmission member, a first sheet member to one of which the linear transmission member is fixed, and a second sheet member fixed to the other of which, the first sheet member being more suitable for fixing the linear transmission member than the second sheet member, a space being formed in one of the first sheet member and the second sheet member that can be filled by melting the other of the first sheet member and the second sheet member, and the first sheet member and the second sheet member being superimposed in a state in which the other of the first sheet member and the second sheet member is melted and filled in the space of the one of the first sheet member and the second sheet member and solidified.

The second aspect is a wiring member according to the first aspect, in which the melting point of one of the first sheet member and the second sheet member is higher than the melting point of the other of the first sheet member and the second sheet member.

A third aspect is a wiring member according to the first or second aspect, wherein the first sheet member is a sheet-like member whose interior is uniformly filled , the second sheet member is a nonwoven sheet member containing a plurality of fibers in which spaces are formed between the plurality of fibers, and the first sheet member and the nonwoven sheet member are superimposed in a state in which the first sheet member melts, fills the spaces in the nonwoven sheet member and solidifies.

The fourth aspect is a wiring member according to the third aspect, in which the first sheet member is melted and filled into the space on the side of the first sheet member of the nonwoven sheet member and solidified, and the space remains in the portion of the nonwoven sheet member away from the first sheet member.

The fifth aspect is a wiring member according to any one of the first to fourth aspects, in which the first sheet member is formed of the same type of resin as the coating of the linear transmission member.

The sixth aspect is a wiring member according to any one of the first to fifth aspects, in which the coating of the linear transmission member and the first sheet member are formed of a resin mainly composed of polyvinyl chloride, and the second sheet member is formed of a resin that is less stretchable than the first sheet member.

The laminated sheet according to the seventh aspect comprises a first sheet member and a second sheet member fixed to the other main surface side of the first sheet member, and a space is formed in one of the first sheet member and the second sheet member that can be filled by melting the other sheet member, and the first sheet member and the second sheet member are superimposed in a solidified state in which the other of the first sheet member and the second sheet member has melted and filled the space in the one of the first sheet member and the second sheet member.

According to the first aspect, the linear transmission member can be firmly fixed to the first sheet member. In addition, the first sheet member and the second sheet member are overlapped in a state in which one of the spaces between the first sheet member and the second sheet member is melted and filled with the other and solidified, so that the first sheet member and the second sheet member can be firmly overlapped and fixed.

According to the second aspect, when the first sheet member and the second sheet member are heated in a superimposed state, the other of the first sheet member and the second sheet member tends to melt first. Therefore, one of the first sheet member and the second sheet member can be melted and filled into the space between the other, and can be easily processed into a solidified state.

According to the third aspect, the linear transmission member can be easily and stably fixed to the sheet-like first sheet member whose inside is uniformly filled . Also, since the first sheet member is melted and filled into the spaces between the multiple fibers of the nonwoven sheet member and solidified, the first sheet member and the nonwoven sheet member are overlapped, so that the first sheet member and the nonwoven sheet member can be kept firmly overlapped.

According to the fourth aspect, since space remains in the portion of the nonwoven sheet member that is separated from the first sheet member, the nonwoven sheet member can provide protective performance and soundproofing.

According to the fifth aspect, the first sheet member is formed of the same resin as the coating of the linear transmission member, making it easy to firmly fix the coating of the linear transmission member to the first sheet member.

According to the sixth aspect, it is easy to fix the covering of the linear transmission member to the first sheet member. In addition, since polyvinyl chloride is easy to stretch, the overlapping first and second sheet members can be made less likely to stretch by using a second sheet member made of a resin that is less likely to stretch than the first sheet member.

According to the seventh aspect, the first sheet member and the second sheet member are superimposed in a state in which one of the spaces between the first sheet member and the second sheet member is melted, filled, and solidified, so that the first sheet member and the second sheet member can be firmly superimposed and fixed. In addition, since the first sheet member and the second sheet member can be superimposed regardless of the adhesiveness due to chemical interaction, for example, the first sheet member can be made of a material suitable for fixing to another member, and the second sheet member can be configured to ensure another function.

10, 110, 210 Wiring member 20 Electric wire (linear transmission member)
26 Cover 30 Laminated sheet 32, 132 First sheet member 33 One main surface of first sheet member 34 Other main surface of first sheet member 36, 136, 236 Second sheet member 37 Fiber 38, 238 Space

Claims (4)

A first sheet member;
A second sheet member fixed to the other main surface side of the first sheet member;
a linear transmission member fixed to the first sheet member;
Equipped with
The linear transmission member is fixed to the first sheet member by a direct fixation at a contact region where the linear transmission member and the first sheet member are directly attached to each other by melting either or both of a resin contained in the coating of the linear transmission member and a resin contained in the first sheet member,
a space is formed in one of the first sheet member and the second sheet member, which can be filled by the other sheet member being melted therein;
the first sheet member and the second sheet member are superimposed on each other in a state where the other of the first sheet member and the second sheet member is melted and filled into the space of the one of the first sheet member and solidified,
A laminated sheet, wherein the first sheet member is formed of a resin containing polyvinyl chloride, and the second sheet member is formed of a resin containing polypropylene, polyamide, polyethylene terephthalate, or polyethylene. The laminate sheet according to claim 1,
A laminated sheet, wherein the melting point of one of the first sheet member and the second sheet member is higher than the melting point of the other of the first sheet member and the second sheet member. The laminate sheet according to claim 1 or 2,
The first sheet member is a sheet-like member having a uniformly filled interior,
The second sheet member is a nonwoven sheet member including a plurality of fibers, and the spaces are formed between the plurality of fibers.
A laminated sheet, in which the first sheet member and the nonwoven sheet member are overlapped in a state in which the first sheet member is melted, filled in the spaces of the nonwoven sheet member, and solidified. The laminate sheet according to claim 3,
The first sheet member is melted and filled into the space on the first sheet member side of the nonwoven sheet member and then solidified,
A laminated sheet, wherein the spaces remain in the portions of the nonwoven sheet members separated from the first sheet member.

Images