Wiring member and manufacturing method for wiring member

Abstract

The purpose of the present invention is to make it possible to easily confirm that the peel strength of a plurality of linear transmission members arranged in parallel on a base member is at least a prescribed value. This wiring member comprises: a plurality of linear transmission members which include a first linear transmission member X and a second linear transmission member that are arranged in parallel; and a base member to which the plurality of linear transmission members are fixed at contacting sites. The peel strength of the first linear transmission member with respect to the base member is greater than the peel strength of the second linear transmission member with respect to the base member.

Description

Wiring member and method for manufacturing the same

[0001] The present disclosure relates to a wiring member and a method for manufacturing the wiring member.

[0002] Patent Document 1 discloses a wire harness in which electric wires are welded to a functional exterior member formed in a sheet shape.

[0003] Japanese Patent Application Laid-Open No. 2018-137208

[0004] It is desirable to be able to easily confirm whether the peel strength of a plurality of electric wires arranged in parallel on an exterior member is equal to or greater than a predetermined value.

[0005] Therefore, an object of the present invention is to make it possible to easily check whether the peel strength of a plurality of linear transmission members arranged in parallel on a base member is equal to or greater than a predetermined value.

[0006] The wiring member of the present disclosure comprises a plurality of linear transmission members including a first linear transmission member and a second linear transmission member arranged in parallel, and a base member to which the plurality of linear transmission members are fixed at contact portions, and the peel strength of the first linear transmission member relative to the base member is higher than the peel strength of the second linear transmission member relative to the base member.

[0007] According to the present disclosure, it is possible to easily confirm whether the peel strength of a plurality of linear transmission members arranged in parallel on a base member is equal to or greater than a predetermined value.

[0008] Fig. 1 is a plan view showing a wiring member according to a first embodiment. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1. Fig. 3 is an explanatory view showing an example of a method for manufacturing the wiring member according to the first embodiment. Fig. 4 is a cross-sectional view showing a wiring member according to a first modified example. Fig. 5 is a cross-sectional view showing a wiring member according to a second modified example.

[0009] [Description of Embodiments of the Present Disclosure] First, embodiments of the present disclosure will be listed and described.

[0010] The wiring member of the present disclosure is as follows.

[0011] (1) A wiring member comprising a plurality of linear transmission members including a first linear transmission member and a second linear transmission member arranged in parallel, and a base member to which the plurality of linear transmission members are fixed at contact portions, wherein the peel strength of the first linear transmission member relative to the base member is higher than the peel strength of the second linear transmission member relative to the base member.

[0012] According to the wiring member of (1), if it is confirmed that the peel strength of the second linear transmission member is equal to or greater than a predetermined value, it is possible to ensure that the peel strength of the first linear transmission member is equal to or greater than a predetermined value without conducting a peel strength test. Furthermore, the positions of the first linear transmission member and the second linear transmission member relative to the base member can be set to predetermined positions. This makes it easy to confirm that the peel strength of the multiple linear transmission members relative to the base member is equal to or greater than a predetermined value.

[0013] (2) In the wiring member of (1), the second linear transmission member may be positioned outward of the first linear transmission member in the parallel arrangement direction of the plurality of linear transmission members. This makes it easier to recognize and grip the second linear transmission member during a test to confirm peel strength, since the second linear transmission member is positioned outward of the first linear transmission member in the parallel arrangement direction.

[0014] (3) In the wiring member of (2), the pair of second linear transmission members may be located on both outer sides of the first linear transmission member along the parallel direction, thereby allowing either of the pair of second linear transmission members on both outer sides to be inspected.

[0015] (4) In the wiring member of (3), a first group and a second group are provided, each including three or more linear transmission members among the plurality of linear transmission members, the first group and the second group are arranged at intervals from each other on the base member, the first group has a first end linear transmission member located at the end on the second group side, a second end linear transmission member located at the end opposite to the first end linear transmission member, and a first intermediate linear transmission member between the first end linear transmission member and the second end linear transmission member, and the second group has a third end linear transmission member located at the end on the first group side. a fourth end linear transmission member located at an end opposite to the third end linear transmission member, and a second intermediate linear transmission member between the third end linear transmission member and the fourth end linear transmission member, wherein the distance between the first end linear transmission member and the third end linear transmission member is greater than the distance between the linear transmission members in each group, and each of the first end linear transmission member, the second end linear transmission member, the third end linear transmission member, and the fourth end linear transmission member is the second linear transmission member, and each of the first intermediate linear transmission member and the second intermediate linear transmission member is the first linear transmission member. Thus, by inspecting the peel strength of the second linear transmission member in each group, it is possible to easily confirm that the peel strength of the plurality of linear transmission members from the base member is equal to or greater than a predetermined value.

[0016] (5) In the wiring member of (3), a first group and a second group are provided, each including three or more linear transmission members among the plurality of linear transmission members, the first group and the second group are arranged at intervals from each other on the base member, the first group has a first end linear transmission member located at an end on the second group side, a second end linear transmission member located at an end opposite to the first end linear transmission member, and a first intermediate linear transmission member between the first end linear transmission member and the second end linear transmission member, and the second group has a third end linear transmission member located at an end on the first group side. a fourth end linear transmission member located at an end opposite to the third end linear transmission member, and a second intermediate linear transmission member between the third end linear transmission member and the fourth end linear transmission member, wherein the distance between the first end linear transmission member and the third end linear transmission member is greater than the distance between the linear transmission members in each group, the second end linear transmission member and the fourth end linear transmission member are each the second linear transmission member, and the first end linear transmission member, the first intermediate linear transmission member, the third end linear transmission member, and the second intermediate linear transmission member are each the first linear transmission member. Thus, by inspecting the peel strength of the second linear transmission member, it is possible to easily confirm that the peel strength of the plurality of linear transmission members from the base member is equal to or greater than a predetermined value for all linear transmission members in the first and second groups.

[0017] (6) In the wiring member of any one of (1) to (5), the first linear transmission member and the second linear transmission member may have the same thickness, which makes it easier to set conditions for achieving a difference in peel strength between the first linear transmission member and the second linear transmission member.

[0018] (7) The present disclosure also provides a wiring member manufacturing method that includes an arrangement step of arranging a plurality of linear transmission members, including parallel first and second linear transmission members, on a base member, and a fixing step of fixing the plurality of linear transmission members to the base member at contact portions thereof. In the fixing step, the plurality of linear transmission members are fixed so that the peel strength of the first linear transmission member relative to the base member is higher than the peel strength of the second linear transmission member relative to the base member. If it is confirmed that the peel strength of the second linear transmission member is equal to or greater than a predetermined value, it is possible to ensure that the peel strength of the first linear transmission member is equal to or greater than the predetermined value without conducting a peel strength test. Furthermore, the positions of the first and second linear transmission members relative to the base member can be set to predetermined positions. This allows for easy confirmation that the peel strength of the plurality of linear transmission members relative to the base member is equal to or greater than a predetermined value.

[0019] (8) In the method for manufacturing a wiring member according to (7), in the fixing step, the force clamping the first linear transmission member and the base member may be greater than the force clamping the second linear transmission member and the base member, thereby fixing the first linear transmission member to the base member so that the peel strength of the first linear transmission member is higher than the peel strength of the second linear transmission member to the base member. This makes it possible to easily fix the first linear transmission member to the base member so that the peel strength of the first linear transmission member is higher than the peel strength of the second linear transmission member to the base member.

[0020] [Details of the embodiments of the present disclosure] Specific examples of the wiring member and the manufacturing method of the wiring member of the present disclosure will be described below with reference to the drawings. Note that the present disclosure is not limited to these examples, but is defined by the claims, and is intended to include all modifications within the meaning and scope equivalent to the claims.

[0021] [Embodiment 1] Hereinafter, a wiring member and a method for manufacturing the wiring member according to embodiment 1 will be described. Fig. 1 is a plan view showing a wiring member 10 according to embodiment 1. Fig. 2 is a cross-sectional view taken along line II-II in Fig. 1.

[0022] The wiring member 10 includes a base member 20 and a plurality of linear transmission members 30. The plurality of linear transmission members 30 are fixed onto the base member 20. As a result, the portions of the plurality of linear transmission members 30 that are arranged on the base member 20 are held along a predetermined path.

[0023] The base member 20 has a main surface. The linear transmission members 30 are disposed and fixed on this main surface. The main surface may be a flat surface, a curved surface, or an uneven surface. The main surface may be a composite surface having a flat surface and another curved surface, etc. The base member 20 may be any member having a main surface for fixing the linear transmission members 30, and may be formed in a sheet shape or a three-dimensional shape. Here, the base member 20 is described as a sheet member formed in a flat shape overall. By fixing multiple linear transmission members 30 to the flat sheet member, the wiring member 10 is maintained in a flat shape.

[0024] The base member 20 has flexibility that allows it to be easily bent in the thickness direction. The wiring member 10 including the base member 20 and the linear transmission member 30 has flexibility that allows it to be easily bent in the thickness direction of the base member 20. The base member 20 may have rigidity that makes it difficult to bend in the thickness direction. The wiring member 10 may be difficult to bend in the thickness direction of the base member 20.

[0025] The material, structure, etc. constituting the base member 20 are not particularly limited and can be set as appropriate. Regarding the material of the base member 20, the base member 20 is formed of a resin material here. Materials other than resin, such as metals or inorganic substances, may also be used as the material of the base member 20.

[0026] The base member 20 may have a single-layer structure or a multi-layer structure of two or more layers. The base member 20 has a fixing layer having a main surface to which the linear transmission member 30 is fixed. When the base member 20 has a multi-layer structure, the base member 20 has, in addition to the fixing layer, an additional layer laminated on the fixing layer. The additional layer may be formed of a different material from the fixing layer or have a different structure. The additional layer may enhance the functionality of the fixing layer or add a function not present in the fixing layer to the base member 20.

[0027] The fixing layer is preferably formed of a material containing a thermoplastic resin such as PVC (polyvinyl chloride), PE (polyethylene), PET (polyethylene terephthalate), PP (polypropylene), etc. The material constituting the additional layer may be a metal, an inorganic substance, or the like in addition to the materials described above for the fixing layer.

[0028] Each layer of the base member 20 may be, for example, a sheet having a uniform solid cross section (also called a non-foamed sheet or solid sheet). Alternatively, for example, each layer may be a foamed sheet. Alternatively, for example, each layer may be a fibrous sheet such as a knitted fabric, woven fabric, or nonwoven fabric. Alternatively, for example, each layer may have a mesh structure. For example, the fixed layer may be a solid sheet, and the additional layer may be a fibrous sheet.

[0029] The fixing layer and the additional layer may both be resin layers. Alternatively, for example, one of the fixing layer and the additional layer may be a resin layer and the other a metal layer. The manner in which the fixing layer and the additional layer are fixed is not particularly limited, but they may be fixed by fusion or adhesion. For example, if at least one of the fixing layer and the additional layer is a sheet with voids on the surface, such as a fiber sheet or a foam sheet, a resin material or adhesive can penetrate into the voids and fix the layer. This produces a so-called anchor effect, firmly fixing the fixing layer and the additional layer.

[0030] The fixing layer and the additional layer may be formed to have the same size (same planar shape). One of the fixing layer and the additional layer may be formed larger than the other. The fixing layer and the additional layer may be fixed over the entire contact area. The fixing layer and the additional layer may be fixed over only a part of the contact area.

[0031] In the example shown in FIG. 1 , the base member 20 has a bending path portion. The linear transmission member 30 is held so as to extend along the bending path portion. It is not essential that the base member 20 has a bending path portion, and the base member 20 may be formed in a straight line. In the example shown in FIG. 1 , the bending path portion is formed in an L-shape in which two straight strip-shaped portions intersect at right angles. The bending path portion may be formed in a shape in which two straight strip-shaped portions intersect at an angle other than orthogonal. The bending path portion may be formed in such a way that the strip-shaped portions are curved or arc-shaped.

[0032] 1, the base member 20 does not have a branch portion. The base member 20 may have a branch portion formed, for example, in a T-shape or a Y-shape. The base member 20 may hold the branch portion of the linear transmission member 30.

[0033] Each of the multiple linear transmission members 30 is a linear member that transmits electricity, light, or the like. It is assumed that the multiple linear transmission members 30 are members that connect components in a vehicle. For example, a connector 50 is provided at the end of the linear transmission member 30. This connector 50 is connected to a connector 50 provided on a counterpart component, thereby connecting the linear transmission member 30 to the counterpart component. In other words, the present wiring member 10 is used as a wiring member 10 that electrically (or optically) connects various components in a vehicle or the like.

[0034] The linear transmission member 30 is assumed to be a linear transmission member 30 that connects components in a vehicle. The linear transmission member 30 extends along a wiring path that corresponds to the position of the component to be connected, etc. The linear transmission member 30 may be a linear member that transmits electricity, light, etc. Each linear transmission member 30 may include a transmission line main body 31 that transmits electricity, light, etc., and a coating layer 32 that covers the transmission line main body 31. The linear transmission member 30 may be composed only of the transmission line main body 31 without including the coating layer 32. For example, the linear transmission member 30 may be a general electric wire having a core wire and a coating surrounding the core wire, or may be a bare conductor, a shielded wire, a twisted wire, an enameled wire, a nichrome wire, an optical fiber, etc.

[0035] The linear transmission member 30 that transmits electricity may be any of various signal lines and power lines. A part of the linear transmission member 30 that transmits electricity may be used as an antenna, a coil, or the like that sends or receives a signal or power to or from space.

[0036] Furthermore, the linear transmission member 30 may be a single linear object, or a composite of multiple linear objects (such as a twisted wire or a cable made up of multiple linear objects covered with a sheath).

[0037] The linear transmission member 30 is arranged so as to bend along the curved path portion of the base member 20. The linear transmission member 30 has a curved section and a straight section. The curved section is a section that is arranged so as to bend along the curved path portion. The straight section is a section that extends linearly along the linear band-shaped portion. Straight sections are provided on both sides of the curved section.

[0038] One end of the linear transmission member 30 extends from a first end of the base member 20 and is connected to the connector 50. The other end of the linear transmission member 30 extends from a second end of the base member 20 and is connected to the connector 50. The end of the linear transmission member 30 may be connected to the connector 50 without extending from the base member 20. In this case, the connector 50 may be fixed to the base member 20.

[0039] For example, the connector 50 includes a connector terminal for transmitting electricity or light and a housing for holding the connector terminal. An end of the transmission line body 31 is connected to the connector terminal. For example, if the linear transmission member 30 is an electric wire, the connector terminal is a conductive member and the housing is an insulating member.

[0040] The portion where the base member 20 and the linear transmission member 30 are fixed is the fixed portion 40. Here, multiple fixed portions 40 are provided at intervals along the extension direction of one linear transmission member 30. The linear transmission member 30 is fixed to the base member 20 via the multiple fixed portions 40 and is held at a predetermined path relative to the base member 20. The multiple fixed portions 40 fix at least a linearly extending portion of the linear transmission member 30 to the base member 20. Here, "the linearly extending linear portion of the linear transmission member 30" means that the linear transmission member 30 extends in one direction when the main surface of the base member 20 is observed in a plan view. The fixed portion 40 fixes the portion of the linear transmission member 30 that follows the curved path portion to the base member 20 in a bent state. Portions of the linear transmission member 30 other than the portion fixed by the fixed portion 40 may be fixed to the base member 20 in a bent state.

[0041] The fixing portion 40 is formed by contact portion fixation. Here, contact portion fixation refers to the portion where the linear transmission member 30 and the base member 20 come into contact and are fixed together. Note that a fixing mode other than contact portion fixation is non-contact portion fixation. Non-contact portion fixation refers to, for example, a fixing member such as sewing thread or adhesive tape pressing the linear transmission member 30 toward the base member 20 and maintaining the pressed state. Contact portion fixation refers to a fixing mode excluding these non-contact portion fixations.

[0042] The manner of fixing the contact portions may be indirect fixing of the contact portions, direct fixing of the contact portions, or a combination of both in different regions. Here, indirect fixing of the contact portions refers to the linear transmission member 30 and the base member 20 being indirectly attached and fixed via an indirect fixing portion such as an adhesive, pressure-sensitive adhesive, or double-sided adhesive tape provided between them. Direct fixing of the contact portions refers to the linear transmission member 30 and the base member 20 being directly attached and fixed without the use of a separate adhesive or the like. In direct fixing of the contact portions, for example, the linear transmission member 30 and the base member 20 may be attached and fixed by melting a resin contained in at least one of them.

[0043] When such a state of direct fixation of the contact regions is formed, the resin may be melted by, for example, heat or a solvent. That is, the state of direct fixation of the contact regions may be a state of direct fixation of the contact regions by heat or a state of direct fixation of the contact regions by a solvent. Preferably, the state of direct fixation of the contact regions is a state of direct fixation of the contact regions by heat.

[0044] In this case, the means for forming the state of direct fixation at the contact sites is not particularly limited, and known means such as welding, fusion, and the like can be used. For example, when forming the state of direct fixation at the contact sites by heat fusion, various fusion means such as ultrasonic fusion, heat and pressure fusion, hot air fusion, and high-frequency fusion can be used. Furthermore, when the state of direct fixation at the contact sites is formed by these means, the linear transmission member 30 and the base member 20 are in a state of direct fixation at the contact sites by that means. Specifically, for example, when the state of direct fixation at the contact sites is formed by ultrasonic fusion, the linear transmission member 30 and the base member 20 are in a state of direct fixation at the contact sites by ultrasonic fusion.

[0045] Here, the description will be made assuming that the fixing portion 40 is a portion that fusion-fixes the linear transmission member 30 to the base member 20. The fixing layer of the base member 20 is a fusion layer. Here, the covering layer 32 of the linear transmission member 30 and the fusion layer of the base member 20 contain the same type of resin material. The resin material of the covering layer 32 of the linear transmission member 30 and the resin material of the fusion layer of the base member 20 are both melted and fused.

[0046] These fused and fixed portions will be described assuming that they are fixed portions formed by ultrasonic fusion. That is, the fixed portions 40 are fused portions formed by ultrasonic fusion of the resin constituting the base member 20 and the resin constituting the coating layer 32 of the linear transmission member 30. Furthermore, each fixed portion 40 can be considered as a spot fixed portion provided at multiple locations spaced apart along the extension direction of one linear transmission member 30.

[0047] The plurality of linear transmission members 30 include a first linear transmission member 30X and a second linear transmission member 30Y. The first linear transmission member 30X and the second linear transmission member 30Y are linear transmission members 30 having different peel strengths from the base member 20. The peel strength of the first linear transmission member 30X from the base member 20 is higher than the peel strength of the second linear transmission member 30Y from the base member 20. Therefore, the first linear transmission member 30X is less likely to peel from the base member 20 than the second linear member. Hereinafter, the fixing portion 40 of the first linear transmission member 30X may be referred to as the first fixing portion 40X, and the fixing portion 40 of the second linear transmission member 30Y may be referred to as the second fixing portion 40Y. In addition, the peel strength of the first linear transmission member 30X relative to the base member 20 may be referred to as the peel strength of the first fixing portion 40X, and the peel strength of the second linear transmission member 30Y relative to the base member 20 may be referred to as the peel strength of the second fixing portion 40Y.

[0048] The peel strength can be evaluated, for example, by performing the same type of peel test on each linear transmission member 30. The peel test may be a test conforming to any of the tests specified in JIS K6854, for example. Specifically, the peel test may be, for example, a 180-degree peel test in which the linear transmission member 30 is folded 180 degrees relative to the base member 20 and pulled, or a T-type peel test in which the base member 20 and the linear transmission member 30 are pulled in opposite perpendicular directions relative to the fused surface. By performing the same type of peel test on the first linear transmission member 30X and the second linear transmission member 30Y, the magnitude of the peel strength is evaluated.

[0049] Here, the wiring member 10 is designed so that each of the first fixing portion 40X and the second fixing portion 40Y is fixed to the base member 20 with a predetermined peel strength or more. The magnitude of the predetermined peel strength is not particularly limited and can be set as appropriate. The predetermined peel strength can be considered to be a value (threshold value) sufficient as the peel strength of the wiring member 10.

[0050] Here, the predetermined peel strength of first fixing portion 40X and the predetermined peel strength of second fixing portion 40Y are the same. After manufacturing wiring member 10, it is confirmed by partial sampling inspection or the like that the peel strengths of first fixing portion 40X and second fixing portion 40Y are equal to or greater than a predetermined value. In this case, if it can be confirmed that the peel strength of second fixing portion 40Y is equal to or greater than the predetermined peel strength, it can be assumed that the peel strength of first fixing portion 40X, which is designed to be higher than the peel strength of second fixing portion 40Y, is also equal to or greater than the predetermined peel strength, and inspection of the peel strength of first fixing portion 40X can be omitted.

[0051] Here, the second linear transmission member 30Y has the lowest peel strength among the multiple parallel linear transmission members 30. The predetermined peel strengths set for the multiple fixing portions 40 are the same. Therefore, if it can be confirmed that the peel strength of the second fixing portion 40Y is equal to or greater than the predetermined peel strength, it can be assumed that all of the multiple fixing portions 40 have the predetermined peel strength or greater, and peel strength testing can be omitted for fixing portions 40 other than the second fixing portion 40Y.

[0052] The difference in peel strength between the first linear transmission member 30X and the second linear transmission member 30Y may be obtained by any configuration or any method. Here, there is no difference in the materials fixed between the first fixing portion 40X and the second fixing portion 40Y. In other words, the materials of the first fixing portion 40X and the second fixing portion 40Y may have the same peel strength when fixed under the same fixing conditions.

[0053] The first linear transmission member 30X and the second linear transmission member 30Y are the same type of linear transmission member 30. The same type of linear transmission member 30 refers to linear transmission members 30 having the same thickness, the same type of transmission line body 31, and the same type of coating layer 32. Therefore, the first linear transmission member 30X and the second linear transmission member 30Y have the same thickness. Furthermore, the transmission line body 31 of the first linear transmission member 30X and the transmission line body 31 of the second linear transmission member 30Y are made of the same material and have the same structure. Furthermore, the coating layer 32 of the first linear transmission member 30X and the coating layer 32 of the second linear transmission member 30Y are made of the same material and have the same structure. Note that the same thickness refers to, for example, being the same size among multiple sizes available for automotive electric wires, and differences in outer diameter due to tolerances within a single size are allowed.

[0054] In the base member 20, the portion to which the first linear transmission member 30X is fixed and the portion to which the second linear transmission member 30Y is fixed are the same type of portion. The same type of portion means that the thickness, layer structure, etc. are the same.

[0055] If the materials to be fixed are the same between the first fixing portion 40X and the second fixing portion 40Y, the difference in peel strength can be achieved, for example, by applying more energy to the first fixing portion 40X than to the second fixing portion 40Y when forming the fixing portion 40. Such a difference in applied energy can be achieved by changing the conditions on the fixing device side. When the fixing portion 40 is formed by ultrasonic welding, such conditions may be, for example, the applied pressure, the applied pressure time, or the vibration conditions.

[0056] When the materials (base member 20 and coating layer 32) to be fixed are different between first fixing portion 40X and second fixing portion 40Y, the applied energy may be the same. For example, when the same energy is applied to both, the material of first fixing portion 40X may adhere more easily than the material of second fixing portion 40Y, and therefore the peel strength of first fixing portion 40X may be higher than the peel strength of second fixing portion 40Y.

[0057] The first linear transmission member 30X and the second linear transmission member 30Y are arranged in parallel. The first linear transmission member 30X and the second linear transmission member 30Y are arranged in parallel from the first end to the second end of the base member 20. The first linear transmission member 30X and the second linear transmission member 30Y may branch off midway along the path on the base member 20.

[0058] The second linear transmission member 30Y is located outward from the first linear transmission member 30X in the parallel arrangement direction of the plurality of linear transmission members 30. However, the second linear transmission member 30Y may also be located inward from the first linear transmission member 30X in the parallel arrangement direction of the plurality of linear transmission members 30.

[0059] Here, a pair of second linear transmission members 30Y are located on both outsides of the first linear transmission member 30X in the parallel direction. In the parallel direction, the outermost pair of linear transmission members 30 of the six linear transmission members 30 are the second linear transmission members 30Y. In the parallel direction, the inner four linear transmission members 30 are the first linear transmission members 30X. However, it is also possible that only the linear transmission member 30 on one outside in the parallel direction is the second linear transmission member 30Y, and the other five linear transmission members 30 are the first linear transmission members 30X.

[0060] <Manufacturing Method> FIG. 3 is an explanatory diagram showing an example of a method for manufacturing the wiring member 10 according to the first embodiment.

[0061] The manufacturing method of the wiring member 10 includes an arrangement step and a fixing step. The arrangement step is a step of arranging a plurality of linear transmission members 30, including a first linear transmission member 30X and a second linear transmission member 30Y arranged in parallel, on the base member 20. The fixing step is a step of fixing the plurality of linear transmission members 30 to the base member 20 at contact portions.

[0062] In the fixing process, the first linear transmission member 30X is fixed so that the peel strength of the first linear transmission member 30X relative to the base member 20 is higher than the peel strength of the second linear transmission member 30Y relative to the base member 20. In the fixing process, the force clamping the first linear transmission member 30X and the base member 20 is made greater than the force clamping the second linear transmission member 30Y and the base member 20, thereby fixing the first linear transmission member 30X relative to the base member 20 so that the peel strength of the first linear transmission member 30X relative to the base member 20 is higher than the peel strength of the second linear transmission member 30Y relative to the base member 20. In other words, the difference in peel strength is obtained by changing the pressure force at the first fixing portion 40X and the second fixing portion 40Y.

[0063] 3, when the fixing portion 40 is formed, the linear transmission member 30 and the base member 20 are sandwiched in the stacking direction by the first member 81 and the second member 82. At this time, the first member 81 and the second member 82 apply a greater pressure to the portion that will become the first fixing portion 40X than to the portion that will become the second fixing portion 40Y.

[0064] Here, the fixing portion 40 is an ultrasonic fusion portion. In this case, the first member 81 and the second member 82 are constituted by a horn 81 and anvil 82 in an ultrasonic fusion machine. The ultrasonic fusion machine applies ultrasonic vibrations while applying pressure. The horn 81 is a member that applies ultrasonic vibrations. The anvil 82 supports the members from the opposite side to the horn 81. Pressure is applied by the horn 81 and the anvil 82. For example, the horn 81 contacts the outer surface of the base member 20 opposite to the linear transmission member 30 side and applies ultrasonic vibrations. The anvil 82 supports the linear transmission member 30. Horn marks may remain on the base member 20 as fusion marks.

[0065] The method for varying the pressure is not particularly limited and can be set as appropriate. In the example shown in FIG. 3 , the support surface 82A of the anvil 82 that supports the fusion material (here, the linear transmission member 30) is an inclined surface. The inclined surface is inclined downward from the middle portion (here, the center) of the support surface 82A along the parallel direction to both outer sides. This makes the pressure applied to the linear transmission member 30 on the outer side in the parallel direction smaller than the pressure applied to the linear transmission member 30 in the middle portion in the parallel direction. However, the pressure may be different by providing the inclined surface on the horn 81 instead of the anvil 82. Alternatively, the pressure may be different by providing the inclined surface on both the horn 81 and the anvil 82.

[0066] The pressure may also differ depending on configurations other than the inclined surface. For example, the pressure may differ when the anvil 82 is made of an elastic material such as rubber or elastomer. In this case, the support surface 82A may be a horizontal surface or an inclined surface. If the anvil 82 is made of an elastic material, the anvil 82 bends when pressure is applied, making it possible to make the pressure on the linear transmission members 30 on the outer side in the parallel direction smaller than the pressure on the linear transmission members 30 in the middle.

[0067] Specifically, when the support surface 82A is pressed, the anvil 82 bends so as to contract in the pressing direction and extend in a direction perpendicular to the pressing direction (the parallel direction). Therefore, the outer portions of the anvil 82 along the parallel direction extend outward more easily than the middle portion along the parallel direction, making it easier to release the force. In contrast, the middle portion of the anvil 82 along the parallel direction does not easily extend outward, making it more difficult to release the force. As a result, the pressure applied to the linear transmission members 30 on the outer sides in the parallel direction is smaller than the pressure applied to the linear transmission members 30 in the middle portion in the parallel direction.

[0068] In the example shown in FIG. 3 , the first fixing portion 40X and the second fixing portion 40Y are formed at the same time using a single pair of horn 81 and anvil 82. In this case, the conditions other than the pressure applied to the first fixing portion 40X and the second fixing portion 40Y in the ultrasonic fusion machine (such as the vibration intensity of the horn 81, the vibration application time, and the pressure application time by the horn 81 and the anvil 82) are the same. The conditions other than the pressure applied to the first fixing portion 40X and the second fixing portion 40Y in the ultrasonic fusion machine may be different. If the first fixing portion 40X and the second fixing portion 40Y are formed sequentially rather than at the same time, the conditions other than the pressure applied may be different between the formation of the first fixing portion 40X and the formation of the second fixing portion 40Y. For example, any one of the vibration intensity of the horn 81, the vibration application time, and the pressure application time by the horn 81 and the anvil 82 may be different between the formation of the first fixing portion 40X and the formation of the second fixing portion 40Y.

[0069] <Effects, etc.> With the wiring member 10 and its manufacturing method configured as described above, if it can be confirmed that the peel strength of the second linear transmission member 30Y is equal to or greater than a predetermined value, it is possible to ensure that the peel strength of the first linear transmission member 30X is equal to or greater than a predetermined value without conducting a peel strength test. Furthermore, the positions of the first linear transmission member 30X and the second linear transmission member 30Y relative to the base member 20 can be set to predetermined positions. In other words, the position of the second linear transmission member 30Y in the wiring member 10 where the peel strength should be inspected is known. This makes it easy to confirm that the peel strength of the plurality of linear transmission members 30 relative to the base member 20 is equal to or greater than a predetermined value.

[0070] Furthermore, the second linear transmission member 30Y is positioned outward in the parallel direction relative to the first linear transmission member 30X. As a result, since the second linear transmission member 30Y is positioned outward in the parallel direction relative to the first linear transmission member 30X, the second linear transmission member 30Y is easier to recognize and grip during a test to check the peel strength.

[0071] In addition, the pair of second linear transmission members 30Y are located on both outer sides of the first linear transmission member 30X in the parallel direction, which allows either of the pair of second linear transmission members 30Y on both outer sides to be inspected.

[0072] Furthermore, the first linear transmission member 30X and the second linear transmission member 30Y have the same thickness, which makes it easier to set conditions for achieving a difference in peel strength between the first linear transmission member 30X and the second linear transmission member 30Y.

[0073] Furthermore, according to the manufacturing method of the wiring member 10, in the fixing step, the force clamping the first linear transmission member 30X and the base member 20 is made greater than the force clamping the second linear transmission member 30Y and the base member 20, thereby fixing the first linear transmission member 30X to the base member 20 so that the peel strength of the first linear transmission member 30X to the base member 20 is higher than the peel strength of the second linear transmission member 30Y to the base member 20. This makes it possible to easily fix the first linear transmission member 30X to the base member 20 so that the peel strength of the first linear transmission member 30X to the base member 20 is higher than the peel strength of the second linear transmission member 30Y to the base member 20.

[0074] [Note] FIG. 4 is a cross-sectional view showing a wiring member 110 according to a first modified example.

[0075] The wiring member 110 differs from the wiring member 10 in that the plurality of linear transmission members 30 are divided into groups. The wiring member 110 is provided with a first group G1 and a second group G2. The first group G1 and the second group G2 each include three or more linear transmission members 30 out of the plurality of linear transmission members 30. The first group G1 and the second group G2 are arranged at intervals on the base member 20.

[0076] The first group G1 includes a first end linear transmission member 30A, a second end linear transmission member 30B, and a first intermediate linear transmission member 30C. The first end linear transmission member 30A is located at the end on the second group G2 side. The second end linear transmission member 30B is located at the end opposite the first end linear transmission member 30A. The first intermediate linear transmission member 30C is located between the first end linear transmission member 30A and the second end linear transmission member 30B.

[0077] The second group G2 includes a third end linear transmission member 30D, a fourth end linear transmission member 30E, and a second intermediate linear transmission member 30F. The third end linear transmission member 30D is located at the end on the first group G1 side. The fourth end linear transmission member 30E is located at the end opposite the third end linear transmission member 30D. The second intermediate linear transmission member 30F is located between the third end linear transmission member 30D and the fourth end linear transmission member 30E.

[0078] The distance between the first end linear transmission member 30A and the third end linear transmission member 30D is larger than the distance between the linear transmission members 30 in each group G1, G2. The distance D1 shown in FIG. 4 is the distance between the first end linear transmission member 30A and the third end linear transmission member 30D. The distance D1 is the distance between the first group G1 and the second group G2. The distance D2 shown in FIG. 4 is the distance between the linear transmission members 30 in each group G1, G2. As shown in FIG. 4, the distance D1 is larger than the distance D2. For example, the distance D1 may be larger than the diameter of one linear transmission member 30, and the distance D2 may be smaller than the diameter of one linear transmission member 30. The distance D2 may be zero. Adjacent linear transmission members 30 in each group G1, G2 may be in contact with each other. The distances D1 and D2 are the distances at the positions where the fixing portions 40 are provided. At positions where the fixing portion 40 is not provided, the distances D1 and D2 may or may not be maintained.

[0079] Each of the first intermediate linear transmission member 30C and the second intermediate linear transmission member 30F is a first linear transmission member 30X. Each of the first end linear transmission member 30A, the second end linear transmission member 30B, the third end linear transmission member 30D, and the fourth end linear transmission member 30E is a second linear transmission member 30Y.

[0080] This wiring member 110 can be manufactured by, for example, forming the fixing portions 40 of the first group G1 and the fixing portions 40 of the second group G2 separately using the horn 81 and the anvil 82. When forming the two fixing portions 40 separately, they may be formed at different times using one set of the horn 81 and the anvil 82, or they may be formed at the same time using two sets of the horn 81 and the anvil 82.

[0081] According to this wiring member 110, by inspecting the peel strength of the second linear transmission member 30Y in each group G1, G2, it is possible to easily confirm that the peel strength of the plurality of linear transmission members 30 relative to the base member 20 is equal to or greater than a predetermined value. In this case, the material of the fixing portions 40 (e.g., the thickness of the linear transmission members 30) may be different between the first group G1 and the second group G2, and the predetermined peel strengths may also be different. In this case, it is preferable that the material of the fixing portions 40 (e.g., the thickness of the linear transmission members 30) and the predetermined peel strength are the same within each group G1, G2.

[0082] The wiring member 110 may have one or more third groups between the first group G1 and the second group G2. In this case, even in the third group, the linear transmission members at both ends may be second linear transmission members, and the linear transmission member between the linear transmission members at both ends may be first linear transmission members.

[0083] FIG. 5 is a cross-sectional view showing a wiring member 210 according to a second modified example.

[0084] The wiring member 210 is the same as the wiring member 110 in that it includes a first group G1 and a second group G2. In the wiring member 210, the first end linear transmission member 30A, the first intermediate linear transmission member 30C, the third end linear transmission member 30D, and the second intermediate linear transmission member 30F are each the first linear transmission member 30X. Furthermore, the second end linear transmission member 30B and the fourth end linear transmission member 30E are each the second linear transmission member 30Y. Therefore, the wiring member 210 differs from the wiring member 110 in that the first end linear transmission member 30A and the third end linear transmission member 30D are each the first linear transmission member 30X rather than the second linear transmission member 30Y.

[0085] This wiring member 210 can be manufactured by, for example, forming the fixing portions 40 of the first group G1 and the fixing portions 40 of the second group G2 at the same time using the horn 81 and the anvil 82. For example, by placing the first group G1 on an inclined surface on one side of the center of the anvil 82 and placing the second group G2 on an inclined surface on the other side and fusing them together, the first fixing portion 40X and the second fixing portion 40Y can be formed at the same time.

[0086] With this wiring member 210, by inspecting the peel strength of the second linear transmission member 30Y, it is possible to easily confirm that the peel strength of the multiple linear transmission members 30 against the base member 20 is above a predetermined value for all linear transmission members 30 in the first group G1 and the second group G2.

[0087] In the wiring member 210, one or more third groups may be provided between the first group G1 and the second group G2. In this case, in the third group, all of the linear transmission members 30 may be the first linear transmission members 30X.

[0088] In the above-mentioned wiring members 10, 110, 210, the base member 20 does not include a cover, and the sheet-like base member 20 covers the linear transmission member 30 from only one side. In the above-mentioned wiring members 10, 110, 210, the other side of the linear transmission member 30 is exposed and not covered by the base member 20. In the wiring member, the base member may include a sheet and a cover that covers the linear transmission member 30 from the side opposite the sheet. In this case, it is sufficient that the linear transmission member 30 is fixed at a contact portion to the sheet. The linear transmission member 30 may or may not be fixed at a contact portion to the cover. The linear transmission member 30 may be fixed at a contact portion to only the sheet that covers one side.

[0089] The configurations described in the above embodiments and modifications can be combined as appropriate as long as they are not mutually contradictory.

[0090] DESCRIPTION OF SYMBOLS 10, 110, 210 Wiring member 20 Base member 30 Linear transmission member 30A First end linear transmission member (linear transmission member) 30B Second end linear transmission member (linear transmission member) 30C First intermediate linear transmission member (linear transmission member) 30D Third end linear transmission member (linear transmission member) 30E Fourth end linear transmission member (linear transmission member) 30F Second intermediate linear transmission member (linear transmission member) 30X First linear transmission member (linear transmission member) 30Y Second linear transmission member (linear transmission member) 31 Transmission line main body 32 Covering layer 40 Fixing portion 40X First fixing portion (fixing portion) 40Y Second fixing portion (fixing portion) 50 Connector 81 Horn (first member) 82 Anvil (second member) 82A Support surface G1 First group G2 2nd Group

Claims

1. A wiring member comprising: a plurality of linear transmission members including a first linear transmission member and a second linear transmission member arranged in parallel; and a base member to which the plurality of linear transmission members are fixed at contact portions, wherein the peel strength of the first linear transmission member with respect to the base member is higher than the peel strength of the second linear transmission member with respect to the base member.

2. The wiring member according to claim 1, wherein the second linear transmission member is located outside along the parallel direction of the plurality of linear transmission members with respect to the first linear transmission member.

3. The wiring member according to claim 2, wherein a pair of the second linear transmission members are located on both outer sides of the first linear transmission member along the parallel direction.

4. The wiring member according to claim 3, wherein a first group and a second group each including three or more linear transmission members among the plurality of linear transmission members are provided, the first group and the second group are arranged spaced apart from each other on the base member, the first group has a first end linear transmission member located at an end on the second group side, a second end linear transmission member located at an end opposite to the first end linear transmission member, and a first intermediate linear transmission member between the first end linear transmission member and the second end linear transmission member, the second group has a third end linear transmission member located at an end on the first group side, a fourth end linear transmission member located at an end opposite to the third end linear transmission member, and a second intermediate linear transmission member between the third end linear transmission member and the fourth end linear transmission member, the distance between the first end linear transmission member and the third end linear transmission member is larger than the distance between the linear transmission members in each group, each of the first end linear transmission member, the second end linear transmission member, the third end linear transmission member, and the fourth end linear transmission member is the second linear transmission member, and each of the first intermediate linear transmission member and the second intermediate linear transmission member is the first linear transmission member.

5. The wiring member according to claim 3, wherein a first group and a second group each including three or more of the plurality of linear transmission members are provided, the first group and the second group are arranged on the base member with a space therebetween, the first group has a first end linear transmission member located at an end on the second group side, a second end linear transmission member located at an end opposite to the first end linear transmission member, and a first intermediate linear transmission member between the first end linear transmission member and the second end linear transmission member, the second group has a third end linear transmission member located at an end on the first group side, a fourth end linear transmission member located at an end opposite to the third end linear transmission member, and a second intermediate linear transmission member between the third end linear transmission member and the fourth end linear transmission member, the distance between the first end linear transmission member and the third end linear transmission member is larger than the distance between the linear transmission members in each group, each of the second end linear transmission member and the fourth end linear transmission member is the second linear transmission member, and each of the first end linear transmission member, the first intermediate linear transmission member, the third end linear transmission member, and the second intermediate linear transmission member is the first linear transmission member.

6. The wiring member according to any one of claims 1 to 5, wherein the first linear transmission member and the second linear transmission member have the same thickness as each other.

7. An arranging step of arranging a plurality of linear transmission members including a first linear transmission member and a second linear transmission member arranged in parallel on a base member, and a fixing step of fixing the plurality of linear transmission members to the base member at contact portions, wherein in the fixing step, the fixing is performed such that the peeling strength of the first linear transmission member with respect to the base member is higher than the peeling strength of the second linear transmission member with respect to the base member.

8. The method of manufacturing a wiring member according to claim 7, wherein in the fixing step, the force for sandwiching the first linear transmission member and the base member is made larger than the force for sandwiching the second linear transmission member and the base member, so that the peeling strength of the first linear transmission member with respect to the base member is higher than the peeling strength of the second linear transmission member with respect to the base member.

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