Flat wire harness mounting structure

Abstract

To provide a technology that enables easy execution of flat wire harness installation work.SOLUTION: A flat wire harness installation structure comprises: an installation object member; a flat wire harness that is arranged along an outer surface of the installation object member; and an installation part for installing the flat wire harness on the installation object member. In the flat wire harness, a through-hole is formed at a part of a base member at which a plurality of linear transmission members are not arranged. The installation part includes a rod-like part that passes through the through-hole, a fixing part that is provided at the first end of the rod-like part so as to fix the rod-like part to the installation object member, and an anti-coming-off part that is provided at the second end of the rod-like part so as to inhibit the rod-like part from coming off the through-hole. An external size D1 of the anti-coming-off part is larger than a size D2 of the through-hole, and the size D2 of the through-hole is equal to or greater than a thickness D3 of the rod-like part.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present disclosure relates to a mounting structure for a flat wire harness. [Background technology]

[0002] Patent Document 1 discloses a technique for fixing a flat wiring member to a vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-145175 A Summary of the Invention [Problem to be solved by the invention]

[0004] Since a flat wire harness has a width dimension larger than a thickness dimension, the flat wire harness is likely to block the field of vision of a worker during installation of the flat wire harness to a target member. It is therefore desirable to simplify the installation of the flat wire harness.

[0005] Therefore, an object of the present invention is to provide a technique that can simplify the installation work of a flat wire harness. [Means for solving the problem]

[0006] The mounting structure of a flat wire harness disclosed herein includes a target member to be mounted, a flat wire harness arranged along an outer surface of the target member to be mounted, and a mounting portion for mounting the flat wire harness to the target member to be mounted, wherein the flat wire harness includes a plurality of linear transmission members and a base material that holds the plurality of linear transmission members in a flat, arranged state, and a through hole is formed in a portion of the base material where the plurality of linear transmission members are not arranged, and the mounting portion includes a rod-shaped portion that passes through the through hole, a fixing portion provided at a first end of the rod-shaped portion to fix the rod-shaped portion to the target member to be mounted, and a slip-out prevention portion provided at a second end of the rod-shaped portion to prevent the rod-shaped portion from slipping out of the through hole, and an outer dimension of the slip-out prevention portion is larger than a dimension of the through hole, and the dimension of the through hole is equal to or larger than a thickness of the rod-shaped portion. Effect of the Invention

[0007] According to the present disclosure, the installation work of a flat wire harness can be simplified. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view showing a mounting structure for a flat wire harness according to a first embodiment. [Diagram 2] FIG. 2 is a plan view showing the mounting structure of the flat wire harness. [Diagram 3] FIG. 3 is a cross-sectional view taken along line III-III in FIG. [Figure 4] FIG. 4 is an exploded cross-sectional view showing the mounting structure of the flat wire harness. [Diagram 5] FIG. 5 is an explanatory diagram showing how the flat wire harness is attached. [Figure 6] FIG. 6 is a front view showing the mounting structure for the flat wire harness according to the second embodiment. [Figure 7] FIG. 7 is an explanatory diagram showing how the flat wire harness is attached. [Figure 8]FIG. 8 is a front view showing a modified example of the mounting structure for the flat wire harness according to the second embodiment. [Figure 9] FIG. 9 is an explanatory diagram showing how the flat wire harness is attached. [Figure 10] FIG. 10 is an explanatory diagram showing how the flat wire harness is attached. [Figure 11] FIG. 11 is a front view showing the mounting structure for a flat wire harness according to the third embodiment. [Figure 12] FIG. 12 is an explanatory diagram showing how the flat wire harness is attached. [Figure 13] FIG. 13 is a front view showing the mounting structure for the flat wire harness according to the fourth embodiment. [Figure 14] FIG. 14 is an explanatory diagram showing how the flat wire harness is attached. [Figure 15] FIG. 15 is an explanatory diagram showing how the flat wire harness is attached. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

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

[0010] The mounting structure of the flat wire harness according to the present disclosure is as follows.

[0011] (1) An installation structure for a flat wire harness comprising: a target member to be attached; a flat wire harness arranged along an outer surface of the target member to be attached; and an installation portion for attaching the flat wire harness to the target member to be attached, wherein the flat wire harness includes a plurality of linear transmission members and a base material for holding the plurality of linear transmission members in a flat arranged state, and a through hole is formed in a portion of the base material where the plurality of linear transmission members are not arranged, and the installation portion includes a rod-shaped portion that passes through the through hole, a fixing portion provided at a first end of the rod-shaped portion to fix the rod-shaped portion to the target member to be attached, and a slip-out prevention portion provided at a second end of the rod-shaped portion to prevent the rod-shaped portion from slipping out of the through hole, and an outer dimension of the slip-out prevention portion is larger than a dimension of the through hole, and the dimension of the through hole is equal to or larger than a thickness of the rod-shaped portion.

[0012] According to the mounting structure for the flat wire harness of (1), the dimension of the through hole is equal to or larger than the thickness of the rod-shaped portion, so that during the mounting operation of the flat wire harness, it is easy to insert the rod-shaped portion into the through hole, and it is easy to visually confirm the mounting target portion of the mounting target member from the through hole before the rod-shaped portion is passed through. This simplifies the mounting operation of the flat wire harness.

[0013] (2) In the mounting structure for a flat wire harness according to (1), the fixing portion may integrally fix the mounting target member and the rod-shaped portion, whereby the base material can be moved to insert the rod-shaped portion into the through-hole, and the rod-shaped portion can be visually confirmed through the through-hole.

[0014] (3) In the mounting structure for a flat wire harness of (2), the rod-shaped portion may be a stud bolt, the retaining portion may be a fastening member fastened to the stud bolt, and an outer dimension of the fastening member may be larger than the dimension of the through hole. This prevents the base material from coming off the stud bolt by the fastening member.

[0015] (4) In the mounting structure for a flat wire harness of (3), a locking recess may be formed on the outer periphery of the stud bolt, and the fastening member may include a cap body that covers the stud bolt, a flange that protrudes outward from the outer periphery of the cap body, and an elastic locking piece that is formed on the inner periphery of the cap body and locks onto the periphery of the locking recess of the stud bolt, and an outer dimension of the flange may be larger than the dimension of the through hole. This allows the fastening member to be fastened by pushing it into the stud bolt.

[0016] (5) In the mounting structure for the flat wire harness of (2), a continuous pin may be provided as the rod-shaped portion and the retaining portion. This allows the flat wire harness to be mounted to the mounting target member by the pin integrated with the mounting target member. This reduces the number of parts that are separate from each other at the start of the mounting work.

[0017] (6) In the mounting structure for the flat wire harness of (5), the pin may have a rigidity that makes it difficult to bend, the rod-shaped portion may extend outward from the outer surface of the mounting target member along a first direction, and the retaining portion may extend from the second end of the rod-shaped portion along a second direction different from the first direction. With this, the flat wire harness can be mounted to the mounting target member by moving the base material along the pin toward the base end of the pin with the tip of the pin inserted through the through hole.

[0018] (7) In the mounting structure for the flat wire harness of (5), the pin may be bent and deformed, and may have a rigidity capable of maintaining a bent and deformed state, and may be bent and deformed so that a portion of the pin is positioned outside the through hole. In this way, the pin passing through the through hole is bent and deformed, thereby mounting the flat wire harness to the mounting target member.

[0019] (8) In the mounting structure for the flat wire harness of (1), the fixing portion may have an insertion hole formed in the mounting target member, the rod-shaped portion may be passed through the insertion hole, and the dimension of the through hole may be larger than the dimension of the insertion hole. This makes it easy to visually confirm the insertion hole through the through hole.

[0020] In the mounting structure for a flat wire harness according to (9) and (8), a bolt including a shaft portion and a head portion, and a fastening member fastened to the bolt may be provided, the shaft portion being the rod-shaped portion, the head portion being one of the fixing portion and the retaining portion, and the fastening member being the other of the fixing portion and the retaining portion. This makes it easy to visually confirm the insertion hole through the through hole, and therefore easy to pass the bolt through the through hole of the base material and the insertion hole of the mounting target member.

[0021] (10) In the mounting structure for a flat wire harness of (8), a split pin having a tail and a head may be provided, the tail having a portion that is the rod-shaped portion and a portion that is either the fixed portion or the retaining portion, and the head may be the other of the fixed portion or the retaining portion. This makes it easy to visually confirm the insertion hole through the through hole, and therefore easy to pass the tail through the through hole of the base material and the insertion hole of the mounting target member.

[0022] [Details of the embodiment of the present disclosure] Specific examples of the mounting structure of the flat wire harness 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 of the claims.

[0023] [Embodiment 1] The mounting structure for a flat wire harness according to the first embodiment will be described below. Fig. 1 is a perspective view showing a mounting structure 10 for a flat wire harness according to the first embodiment. Fig. 2 is a plan view showing the mounting structure 10 for a flat wire harness. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 2. Fig. 4 is an exploded cross-sectional view showing the mounting structure 10 for a flat wire harness. Fig. 5 is an explanatory view showing a state in which a flat wire harness 30 is mounted.

[0024] The mounting structure 10 for a flat wire harness includes a mounting target member 20, a flat wire harness 30, and a mounting portion 40. The flat wire harness 30 is disposed along an outer surface 21 of the mounting target member 20. The mounting portion 40 mounts the flat wire harness 30 to the mounting target member 20.

[0025] The mounting target member 20 is, for example, a member such as a frame, reinforcement, or panel disposed in a vehicle. Here, the mounting target member 20 is described as a reinforcement disposed in an instrument panel. The reinforcement 20 is formed, for example, in a cylindrical shape. The reinforcement 20 has an outer surface 21 and an inner surface 22. The outer surface 21 is the outer peripheral surface of the cylinder, and the inner surface 22 is the inner peripheral surface of the cylinder.

[0026] The flat wire harness 30 includes a plurality of linear transmission members 32 and a base material 34. The linear transmission members 32 may be any linear member that transmits electricity or light. The linear transmission members 32 are, for example, electric wires that transmit electricity or optical fibers that transmit light. Here, the linear transmission members 32 are described as being electric wires. Each of the plurality of electric wires 32 is a coated electric wire. The coated electric wire has a conductor core wire 33a and a coating layer 33b that covers the conductor core wire 33a.

[0027] The base material 34 holds the plurality of electric wires 32 in a flat lined state. The structure for holding the plurality of electric wires 32 in a flat lined state relative to the base material 34 is not particularly limited. For example, each of the plurality of electric wires 32 may be fixed to the base material 34 by welding (including ultrasonic welding, heat and pressure welding, hot air welding, high frequency welding, or welding by a solvent), an adhesive, a pressure sensitive adhesive, or the like. In this case, it is easier to keep the plurality of electric wires 32 in a flat state. Also, each of the plurality of electric wires 32 may be fixed to the base material 34 by sewing thread. Also, the plurality of electric wires 32 and the base material 34 may be bound by a binding member wound around the plurality of electric wires 32 and the base material 34. The binding member may be, for example, a cable tie (also called a cable tie) or an adhesive tape.

[0028] The extension direction of the multiple electric wires 32 is the extension direction of the flat wire harness 30. The parallel direction of the multiple electric wires 32 is the width direction of the flat wire harness 30. The lamination direction of the electric wires 32 and the base material 34 is the thickness direction of the flat wire harness 30. In the flat wire harness 30, the dimension in the extension direction and the dimension in the width direction are larger than the dimension in the thickness direction. The width dimension of the flat wire harness 30 may be the same as or larger than the width dimension of the reinforcement 20, for example.

[0029] Here, the base material 34 is formed in a sheet shape. A through hole 35 is formed in a portion of the base material 34 where the plurality of electric wires 32 are not arranged. Here, the through hole 35 does not overlap with the electric wires 32. The through hole 35 may partially overlap with the electric wires 32. A part of the mounting portion 40 penetrates the through hole 35, and the flat wire harness 30 is mounted to the mounting target member 20. The through hole 35 can also be used as a window portion for an operator to visually check the mounting target portion of the mounting target member 20 through the flat wire harness 30 when mounting the flat wire harness 30 to the mounting target member 20.

[0030] When a binding member is wound around the multiple electric wires 32 and the base material 34, the through hole 35 may be provided at a position overlapping the binding member. In this case, a hole for passing the binding member through may be formed in the binding member as well. The binding member may be provided at a position not overlapping the through hole 35. In this case, the binding member does not need to have a hole for passing a part of the attachment portion 40 through.

[0031] The parallel structure of the multiple electric wires 32 is not particularly limited as long as they are arranged flat. For example, the multiple electric wires 32 may be arranged in a scattered state on the main surface of the base material 34. The multiple electric wires 32 may be held in a line or in a stacked line. In each row, adjacent electric wires 32 may be separated from each other as shown in FIG. 3. In each row, adjacent electric wires 32 may be in contact with each other.

[0032] The plurality of electric wires 32 may be arranged on the main surface of the base material 34 in a bundled state. In this case, the plurality of electric wires 32 may be divided into a plurality of groups. Specifically, the plurality of electric wires 32 are bundled separately for each of the plurality of groups into a plurality of bundles. The plurality of bundles are arranged along the main surface. This makes it easy to keep the plurality of electric wires 32 in a flat state.

[0033] The base material 34 has a first main surface and a second main surface facing in opposite directions. Here, the multiple electric wires 32 are arranged only on the first main surface of the base material 34. No electric wires 32 are arranged on the second main surface. The multiple electric wires 32 may be arranged separately on the first main surface and the second main surface of the base material 34. When the multiple electric wires 32 are arranged only on the first main surface of the base material 34, the surface of the base material 34 facing the outer surface 21 of the reinforcement 20 may be the first main surface or the second main surface.

[0034] The flat wire harness 30 may be a belt-shaped wiring member, for example, a flexible flat cable, in which a plurality of linear conductors are arranged in parallel and covered with an insulating material such as a film. In this case, the linear conductors correspond to the linear transmission member, and the film corresponds to the base material.

[0035] Here, a through hole 35 is formed in the middle of the base material 34 in the width direction. A plurality of electric wires 32 are arranged separately on both sides of the through hole 35. However, the through hole 35 may be formed in the end portion of the base material 34 in the width direction. A plurality of electric wires 32 may be arranged concentratedly on only one side of the through hole 35.

[0036] The mounting portion 40 includes a rod-shaped portion 41, a fixing portion 46, and a retaining portion 50. The rod-shaped portion 41 passes through the through hole 35. The fixing portion 46 is provided at a first end 42 of the rod-shaped portion 41. The retaining portion 50 is provided at a second end 43 of the rod-shaped portion 41. The fixing portion 46 fixes the rod-shaped portion 41 to the mounting target member 20. The retaining portion 50 prevents the rod-shaped portion 41 from coming out of the through hole 35. The outer dimensions of the retaining portion 50 are larger than the dimensions of the through hole 35. The dimensions of the through hole 35 are equal to or larger than the thickness of the rod-shaped portion 41.

[0037] In this embodiment, the fixing portion 46 integrally fixes the attachment target member 20 and the rod-shaped portion 41. Specifically, the fixing portion 46 alone fixes the rod-shaped portion 41 to the attachment target member 20 without cooperating with the retaining portion 50. The rod-shaped portion 41 is provided in advance on the attachment target member 20 by the fixing portion 46 at a stage before being inserted into the through hole 35.

[0038] Here, the fixing portion 46 fixes the attachment target member 20 and the rod-shaped portion 41 so that they cannot be detached from each other. In this case, the fixing portion 46 may be, for example, a welded portion at which the outer surface 21 of the attachment target member 20 and the first end portion 42 of the rod-shaped portion 41 are welded to each other.

[0039] The fixing portion 46 may detachably fix the attachment target member 20 and the rod-shaped portion 41. In this case, for example, the first end 42 of the rod-shaped portion 41 is a bolt portion, and a protrusion is provided on the second end 43 side of the bolt portion. A fastening member is provided to fasten to the bolt portion. With the bolt portion penetrating the attachment target member 20, the fastening member and the protrusion hold the attachment target member 20 from opposite sides, so that the attachment target member 20 and the rod-shaped portion 41 are detachably fixed in advance. The fixing portion 46 in this case is the protrusion and the fastening member.

[0040] The rod-shaped portion 41 is a stud bolt. The retaining portion 50 is a fastening member that is fastened to the stud bolt 41. The outer dimensions of the fastening member 50 are larger than the dimensions of the through hole 35. The fastening member 50 is a cap, a nut, or the like.

[0041] A locking recess 44 is formed on the outer periphery of the stud bolt 41. An elastic locking piece 54 of the fastening member 50, which will be described later, is locked to the periphery of the locking recess 44. Here, as the locking recess 44, an annular groove is formed on the outer surface of the second end 43 of the stud bolt 41 in the circumferential direction over the entire circumference. However, the shape of the locking recess 44 may be any shape as long as the elastic locking piece 54 can be locked. As the locking recess 44, a part of the stud bolt 41 in the circumferential direction may be partially recessed. Also, for example, annular grooves may be formed at a plurality of positions spaced apart along the axial direction of the stud bolt 41. In this case, the stud bolt 41 has a shape in which annular protrusions and annular recesses are alternately continuous in the axial direction. Also, for example, a male thread may be formed on the outer surface of the stud bolt 41, and the groove of the male thread may be the locking recess 44.

[0042] Here, the fastening member 50 is a cap. The fastening member 50 includes a cap body 51, a flange 53, and an elastic locking piece 54. Here, the fastening member 50 is, for example, a resin member integrally molded with a die using the same resin material.

[0043] The cap body 51 is placed over the stud bolt 41. The cap body 51 is formed in a cylindrical shape and has an insertion portion 52 through which the stud bolt 41 is inserted. One axial end of the insertion portion 52 is open. Here, the other axial end of the insertion portion 52 is closed. The other axial end of the insertion portion 52 may be open. Here, the length of the insertion portion 52 is shorter than the length of the stud bolt 41. The length of the insertion portion 52 may be the same as or longer than the length of the stud bolt 41. The diameter of the insertion portion 52 is larger than the diameter of the stud bolt 41.

[0044] The flange 53 protrudes outward from the outer periphery of the cap body 51. Here, the flange 53 is provided on the outer periphery of one axial end of the cap body 51. The outer dimension of the flange 53 is larger than the dimension of the through hole 35. Here, the flange 53 is formed over the entire circumference of the cap body 51 in the circumferential direction. The flange 53 may be formed partially on a portion of the cap body 51 along the circumferential direction. A plurality of flanges extending partially in the circumferential direction of the cap body 51 may be formed at intervals along the circumferential direction of the cap body 51.

[0045] The elastic locking piece 54 is formed on the inner periphery of the cap body 51. The elastic locking piece 54 locks onto the periphery of the locking recess 44 of the stud bolt 41. When the stud bolt 41 is inserted into the cap body 51, the elastic locking piece 54 elastically deforms so as to come into contact with the outer periphery of the stud bolt 41 and expand in diameter. As the insertion of the stud bolt 41 into the cap body 51 progresses and the elastic locking piece 54 reaches the locking recess 44, the elastic locking piece 54 elastically returns to its original position and locks onto the periphery of the locking recess 44.

[0046] The elastic locking piece 54 may have any shape as long as it can be locked to the periphery of the locking recess 44 of the stud bolt 41. The elastic locking piece 54 may be formed over the entire circumference along the circumferential direction of the cap body 51. The elastic locking piece 54 may be formed partially on a part of the cap body 51 along the circumferential direction. The elastic locking piece 54 may be formed in a plurality of pieces at intervals along the circumferential direction of the cap body 51. The elastic locking piece 54 may be formed at only one location along the axial direction of the cap body 51. The elastic locking piece 54 may be formed at a plurality of locations at intervals along the axial direction of the cap body 51.

[0047] In FIG. 4, dimension D1 indicates the outer dimension of fastening member 50. Here, dimension D1 is the outer diameter of circular flange 53. Furthermore, dimension D2 indicates the dimension of through hole 35. Here, dimension D2 is the diameter of circular through hole 35. Furthermore, dimension D3 indicates the thickness of stud bolt 41. Here, dimension D3 is the diameter of circular stud bolt 41.

[0048] The diameter D2 of the through hole 35 is equal to or larger than the diameter D3 of the stud bolt 41. In consideration of the ease of assembly, it is preferable that the diameter D2 of the through hole 35 is equal to or larger than the diameter D3 of the stud bolt 41 by 1.5 times.

[0049] Further, the outer diameter D1 of the flange 53 is larger than the diameter D2 of the through hole 35. It is desirable that the outer diameter D1 of the flange 53 is twice the diameter D2 of the through hole 35 or more.

[0050] In addition, when the flange 53 is not circular, the outer dimension D1 of the flange 53 may be replaced with the dimension of the portion having the largest outer dimension of the flange 53. The dimension of the portion having the largest outer dimension of the flange 53 can also be considered to be the length of the longest line segment among line segments connecting two different points on the periphery of the flange 53 in a plan view.

[0051] Similarly, when through hole 35 is not circular, dimension D2 of through hole 35 may be replaced with the dimension of the largest dimension of through hole 35. The dimension of the largest dimension of through hole 35 can also be considered to be the length of the longest line segment among line segments connecting two different points on the periphery of through hole 35 in a plan view.

[0052] Similarly, if the stud bolt 41 is not circular, the thickness D3 of the stud bolt 41 may be replaced with the dimension of the largest outer dimension of the stud bolt 41. The dimension of the largest outer dimension of the stud bolt 41 can also be considered to be the length of the longest line segment among line segments connecting two different points on the periphery of the stud bolt 41 in a plan view.

[0053] The fixing structure between the stud bolt 41 and the fastening member 50 is not limited to the one described above. For example, a cap without the elastic locking piece 54 may be used as the fastening member. In this case, the stud bolt 41 and the fastening member can be fixed by press-fitting the stud bolt 41 into the cap body. The dimensional difference between the stud bolt 41 and the cap body for press-fitting may be selected from an intermediate fit or an interference fit as specified in JIS B0401-1.

[0054] Also, for example, a nut may be used as the fastening member instead of the cap. In this case, a male thread is provided on the stud bolt, and a female thread is provided on the nut. Then, the stud bolt and the fastening member can be fixed by screwing the stud bolt and the nut together. The thread standard may be a general metric thread. The nominal diameter (size) of the metric thread may be, for example, M4, M6, M8, etc. The nut may be a nut with a flange 53 or a nut without a flange 53.

[0055] When the stud bolt and the cap body are press-fitted, or when the stud bolt and the nut are screwed together, the dimensions of the cap or the nut should be set so that the relationship between the above dimensions D1, D2, and D3 holds.

[0056] 1, here, a plurality of mounting portions 40 are provided at intervals along the extension direction of the reinforcement 20. By mounting the flat wire harness 30 using a plurality of mounting portions 40, rotation of the flat wire harness 30 around the mounting portion 40 is suppressed. Here, there is one mounting portion 40 in the circumferential direction of the reinforcement 20, but a plurality of mounting portions 40 may be provided at intervals from each other in the circumferential direction of the reinforcement 20.

[0057] Here, the stud bolt 41 protrudes vertically upward from the reinforcement 20. A portion of the flat wire harness 30 below where the mounting portion 40 is provided is supported by the reinforcement 20. The stud bolt 41 may protrude from the reinforcement 20 in a direction other than vertically upward. The stud bolt 41 may protrude from the reinforcement 20 in a horizontal direction or vertically downward.

[0058] The flat wire harness 30 has a rigidity that does not sag under its own weight when a part of the flat wire harness 30 is supported in a position in which the width direction and the extension direction are parallel to the horizontal direction as shown in FIG. 3. In a portion (portions located on the left and right of the mounting portion 40 in FIG. 3) that is separated laterally along the horizontal direction from the portion where the mounting portion 40 is provided, the flat wire harness 30 and the reinforcement 20 are separated from each other. The configuration for the flat wire harness 30 to have such rigidity is not particularly limited. For example, the base material 34 may be a sheet material having high rigidity that does not sag under its own weight. Also, for example, the base material 34 may be a flexible sheet material or the like that has rigidity that allows it to sag under its own weight, and the rigidity of the flat wire harness 30 may be increased by stacking a plurality of wiring bodies each having a linear transmission member 32 and a base material 34 and maintaining the stacked state to form the flat wire harness 30.

[0059] The flat wire harness 30 may have a rigidity such that it sags under its own weight when a portion of the flat wire harness 30 is supported in a position in which the width direction and the extension direction are parallel to the horizontal direction. In this case, the flat wire harness 30 may sag and contact the reinforcement 20 even in a portion separated to the side along the horizontal direction from the portion where the mounting portion 40 is provided.

[0060] When the flat wire harness 30 is attached using the stud bolt 41 and the fastening member 50, as shown in FIG. 5, the stud bolt 41 extending linearly in a direction perpendicular to the outer surface 21 of the reinforcement 20 is inserted into the through hole 35. Next, the fastening member 50 is fastened to the tip of the stud bolt 41. Here, the cap-shaped fastening member 50 is pushed into the tip of the stud bolt 41, so that the fastening member 50 is fastened to the tip of the stud bolt 41. At this time, the elastic locking piece 54 comes into contact with the stud bolt 41 and expands in diameter, while the fastening member 50 moves along the stud bolt 41. Then, at a predetermined position, the elastic locking piece 54 elastically returns to its original position and is locked in the locking recess 44, and the stud bolt 41 and the fastening member 50 are fastened. As a result, the flat wire harness 30 is attached to the reinforcement 20, resulting in the flat wire harness mounting structure 10 in the state of FIG. 1.

[0061] <Effects, etc.> According to the mounting structure 10 for the flat wire harness configured as described above, since the diameter D2 of the through hole 35 is equal to or larger than the diameter D3 of the rod-shaped portion 41, during the mounting operation of the flat wire harness 30, it becomes easier to visually confirm the mounting target portion of the mounting target member 20 from the through hole 35 before the rod-shaped portion 41 is passed through, and it becomes easier to insert the rod-shaped portion 41 into the through hole 35. This simplifies the mounting operation of the flat wire harness 30.

[0062] Furthermore, the fixing portion 46 integrally fixes the attachment target member 20 and the rod-shaped portion 41. In this case, the rod-shaped portion 41 is also an attachment target portion. Therefore, the base member 34 can be moved to insert the rod-shaped portion 41 into the through hole 35, and the rod-shaped portion 41, which is an attachment target portion, can be visually confirmed through the through hole 35. This makes it easier to attach the flat wire harness 30.

[0063] Moreover, the rod-shaped portion 41 is the stud bolt 41, the retaining portion 50 is a fastening member 50 fastened to the stud bolt 41, and the outer diameter D1 of the fastening member 50 is larger than the diameter D2 of the through hole 35. As a result, the fastening member 50 prevents the base material 34 from coming off the stud bolt 41.

[0064] Further, a locking recess 44 is formed on the outer periphery of the stud bolt 41, and the fastening member 50 includes a cap body 51 that is placed over the stud bolt 41, a flange 53 that projects outward from the outer periphery of the cap body 51, and an elastic locking piece 54 that is formed on the inner periphery of the cap body 51 and locks onto the periphery of the locking recess 44 of the stud bolt 41, and the outer diameter D1 of the flange 53 is larger than the diameter D2 of the through hole 35. This allows the cap-shaped fastening member 50 to be fastened by pushing it into the stud bolt 41.

[0065] [Embodiment 2] The mounting structure for a flat wire harness according to the second embodiment will be described. Fig. 6 is a front view showing a mounting structure 110 for a flat wire harness according to the second embodiment. Fig. 7 is an explanatory diagram showing a state in which a flat wire harness 130 is mounted. The same applies to the following drawings. In the following description, the same components as those described above are given the same reference numerals, and description thereof will be omitted.

[0066] In this embodiment, a continuous pin 60 is provided as a member forming a rod-shaped portion and a retaining portion instead of the stud bolt 41 and the fastening member 50. The pin 60 is integrated with the attachment target member 20 via a fixing portion similar to the fixing portion 46 of the stud bolt 41. This allows the flat wire harness 130 to be attached to the attachment target member 20 by the pin 60 integrated with the attachment target member 20. This reduces the number of parts that are separate from each other at the start of the attachment work. In addition, in Figs. 6 and 7, the flat wire harness 130 is illustrated with the linear transmission member 32 omitted. The flat wire harness 130 can be configured similarly to the flat wire harness 30, except that the position of the through hole 35 is different from the position of the through hole 35 in the flat wire harness 30.

[0067] Here, the pin 60 is provided with two bent portions 64. The two bent portions 64 are provided at an interval along the extending direction of the pin 60. Here, the pin 60 has a rod-shaped portion 61 extending from the base end to the first bent portion 64a, and the portion distal to the first bent portion 64a is the retaining portion 62. The portion of the retaining portion 62 between the first bent portion 64a and the second bent portion 64b is called the first retaining portion 62a, and the portion distal to the second bent portion 64b is called the second retaining portion 62b. The retaining portion may have only the first retaining portion 62a without the second retaining portion 62b.

[0068] In this embodiment, the pin 60 has a rigidity that makes it difficult to bend and deform. The rigidity that makes it difficult to bend and deform the pin 60 by the force of an operator is a rigidity. For example, the pin 60 has a curved shape by being molded in a curved state in advance, or by being bent from a straight state by a bender or the like. Also, for example, the pin 60 may have a curved shape by connecting the ends of two straight pins that intersect with each other by welding or the like.

[0069] The rod-shaped portion 61 extends outward from the outer surface 21 of the reinforcement 20 in a first direction, and the retaining portion 62 extends from the second end 43 of the rod-shaped portion 61 in a second direction different from the first direction. With this, with the tip of the pin 60 inserted through the through hole 35, the base material 34 can be moved along the pin 60 toward the base end of the pin 60, thereby allowing the flat wire harness 130 to be attached to the attachment target member 20.

[0070] Here, the second direction is the extension direction of the first retaining portion 62a. Here, the retaining portion 62 is bent in a third direction that intersects with the second direction at the middle portion. The third direction is the extension direction of the second retaining portion 62b. Here, the second direction intersects with (here, perpendicular to) the axial direction of the reinforcement 20. The third direction is perpendicular to the second direction. The third direction is parallel to the first direction.

[0071] In this embodiment, no fastening member is used, and the flat wire harness 130 is attached by being hooked onto the pin 60. However, in order to suppress movement of the flat wire harness 130 relative to the pin 60, a fastening member may be attached to the pin 60.

[0072] When attaching the flat wire harness 130 using the pin 60, as shown in Fig. 7, the tip of the pin 60 is inserted into the through hole 35, and the flat wire harness 130 is slid toward the base end of the pin 60. In Fig. 7, the flat wire harness 130 before insertion is shown by a solid line, and the flat wire harness 130 after insertion is shown by a two-dot chain line. The flat wire harness 130 slides in the direction of the arrow in Fig. 7. When the flat wire harness 130 reaches the base end of the pin 60, the flat wire harness 130 is attached to the reinforcement 20, resulting in the flat wire harness mounting structure 110 in the state shown in Fig. 6.

[0073] Since the pin 60 has the bent portions 64, the flat wire harness 130 rotates when passing through the bent portions 64. Here, the flat wire harness 130 rotates 90 degrees at each bent portion 64. Here, since the second retaining portion 62b protrudes from the tip of the first retaining portion 62a toward the side where the rod-shaped portion 61 is located in parallel with the rod-shaped portion 61, the flat wire harness 130 rotates 180 degrees from the tip of the pin 60 to the base end of the pin 60.

[0074] 7, in the flat wire harness 130, the through hole 35 is provided at an end along the width direction of the base material 34. As a result, when the flat wire harness 130 rotates from the tip end of the pin 60 toward the base end of the pin 60, the portion of the flat wire harness 130 closer to the reinforcement 20 than the pin 60 is less likely to interfere with the reinforcement 20.

[0075] [Modification of the second embodiment] Fig. 8 is a front view showing a modified example of the mounting structure 110 for a flat wire harness according to embodiment 2. Figs. 9 and 10 are explanatory views showing how a flat wire harness 130 is mounted.

[0076] In the mounting structure 210 for a flat wire harness according to this modification, the flat wire harness 130 is mounted using a pin 260, similarly to the mounting structure 110 for a flat wire harness according to the second embodiment. In the mounting structure 210 for a flat wire harness, the rigidity of the pin 260 is different from the rigidity of the pin 60 in the mounting structure 110 for a flat wire harness.

[0077] Specifically, the pin 260 has a rigidity that allows it to bend and maintain the bent and deformed state. Here, "the pin 260 has a rigidity that allows it to bend and deform" means that a worker can bend the pin 260 when installing the flat wire harness 130. In addition, "the pin 260 has a rigidity that allows it to maintain the bent and deformed state" means that the pin 260 can maintain the bent and deformed state so that the flat wire harness 130 does not come off when the pin 260 is bent and deformed.

[0078] A part of the pin 260 is bent and deformed so as to be located outside the through hole 35. As a result, the pin 260 that passes through the through hole 35 is bent and deformed, whereby the flat wire harness 130 is attached to the reinforcement 20.

[0079] In the example shown in FIG. 8, the pin 260 is bent on the tip side from the through hole 35. In this case, the base end portion of the pin 260 from the bent portion 264 forms the rod-shaped portion 261, and the tip portion from the bent portion 264 forms the retaining portion 262. The pin 260 may be bent on the base end side from the through hole 35. The pin 260 may be bent at the base end portion with the reinforcement 20 and extend linearly from the reinforcement 20 in a direction intersecting the extension direction of the through hole 35. In this case, it can be considered that the pin 260 does not have the bent portion 264 in appearance.

[0080] In the example shown in FIG. 8, the tip of the pin 260 extends toward the outside in the width direction of the reinforcement 20. The tip of the pin 260 may extend along the axial direction of the reinforcement 20. In the example shown in FIG. 8, the through hole 35 is formed at one end of the base material 34 in the width direction, and the tip of the pin 260 extends in the opposite direction (to the right in the paper of FIG. 8) to the direction toward the other end of the base material 34 (to the left in the paper of FIG. 8). The tip of the pin 260 may extend in the direction toward the other end of the base material 34. The through hole 35 may be formed in the middle of the base material 34 in the width direction.

[0081] When the flat wire harness 130 is attached using the pin 260, first, as shown in FIG. 9, the pin 260 before bending deformation is inserted into the through hole 35, and the flat wire harness 30 is slid toward the base end of the pin 260. In FIG. 9, the flat wire harness 130 before insertion is shown by a solid line, and the flat wire harness 130 after insertion is shown by a two-dot chain line. When the pin 260 is inserted into the through hole 35, as shown in FIG. 9, the pin 260 before bending deformation extends linearly in a direction perpendicular to the outer surface 21 of the reinforcement 20, so that the flat wire harness 130 can be easily slid along the pin 260. In addition, it is also easy to insert each of the multiple pins 260 into the corresponding through hole 35.

[0082] When the flat wire harness 130 reaches the base end of the pin 260, the pin 260 is then bent as shown in Fig. 10. In Fig. 10, the pin 260 before bending is indicated by a solid line, and the pin 260 after bending is indicated by a two-dot chain line. When there are multiple pins 260, the multiple pins 260 may be bent in the same direction or in different directions. By bending the pin 260, the flat wire harness 130 is attached to the reinforcement 20, resulting in the flat wire harness mounting structure 210 in the state shown in Fig. 8.

[0083] [Embodiment 3] A description will now be given of a mounting structure for a flat wire harness according to embodiment 3. Fig. 11 is a front view showing a mounting structure 310 for a flat wire harness according to embodiment 3. Fig. 12 is an explanatory diagram showing a state in which a flat wire harness 130 is mounted.

[0084] The mounting structure 310 for a flat wire harness differs from the mounting structures 10, 110, and 210 for a flat wire harness in that the rod-shaped portion is a member provided separately from the reinforcement 20. In this case, a fixing portion for fixing the rod-shaped portion to the reinforcement 20 has an insertion hole 23 formed in the reinforcement 20. The rod-shaped portion is passed through the insertion hole 23.

[0085] In this embodiment, a bolt 70 including a shaft portion 71 and a head portion 72, and a fastening member 74 fastened to the bolt 70 are provided. The shaft portion 71 is a rod-shaped portion. The head portion 72 is either the fixed portion or the retaining portion. The fastening member 74 is either the fixed portion or the retaining portion. In the example shown in FIG. 11, the head portion 72 is the retaining portion, and the fastening member 74 is the fixed portion. In this case, the bolt 70 is inserted into the insertion hole 23 from the outside of the reinforcement 20. When the head portion 72 is the fixed portion and the fastening member 74 is the retaining portion, the bolt 70 is inserted into the insertion hole 23 from the inside of the reinforcement 20.

[0086] The insertion hole 23 is circular. The dimension of the insertion hole 23 is the diameter of the insertion hole 23. The diameter of the through hole 35 is larger than the diameter of the insertion hole 23. This makes it easy to visually confirm the insertion hole 23 through the through hole 35, and therefore makes it easy to pass the bolt 70 through the through hole 35 of the base material 34 and the insertion hole 23 of the reinforcement 20. In addition, when the insertion hole 23 is not circular, the dimension of the insertion hole 23 may be replaced with the dimension of the largest dimension of the insertion hole 23. The dimension of the largest dimension of the insertion hole 23 can also be considered to be the length of the longest line segment among the line segments connecting two different points on the periphery of the insertion hole 23 in a plan view.

[0087] Here, the fastening member 74 is a nut. In this case, a washer 76 may be provided between the base material 34 and the head 72 serving as a retaining portion or the fastening member 74. By providing the washer 76, the peripheral portion of the through hole 35 in the base material 34 is prevented from twisting when the bolt 70 is screwed in.

[0088] The washer 76 may have protrusions like the teeth of a toothed washer, and the protrusions may be embedded in the base material. This prevents the washer 76 from rotating relative to the base material 34 when the bolt 70 is screwed in, and makes the peripheral portion of the through hole 35 of the base material 34 less likely to twist when the bolt 70 is screwed in.

[0089] When attaching the flat wire harness 130 using the bolt 70 and the fastening member 74, the flat wire harness 130 and the reinforcement 20 are aligned so that the axial direction of the through hole 35 of the base material 34 coincides with the axial direction of the insertion hole 23 of the reinforcement 20, as shown in FIG. 12. At this time, the worker can visually check the insertion hole 23 through the through hole 35, which makes the alignment easy. After the alignment is completed, the bolt 70 is inserted into the through hole 35 and the insertion hole 23, and the fastening member 74 is fastened to the tip of the bolt 70. By fastening the bolt 70 and the fastening member 74, the flat wire harness 130 is attached to the reinforcement 20, resulting in the flat wire harness mounting structure 310 in the state shown in FIG. 11.

[0090] [Embodiment 4] A description will be given of a mounting structure for a flat wire harness according to embodiment 4. Fig. 13 is a front view showing a mounting structure 410 for a flat wire harness according to embodiment 4. Figs. 14 and 15 are explanatory views showing a state in which a flat wire harness 130 is mounted.

[0091] This embodiment differs from the third embodiment in that a split pin 80 is provided as a member to be inserted into the insertion hole 23 and the through hole 35 instead of the bolt 70.

[0092] The split pin 80 has a tail 81 and a head 82. The tail 81 has a portion that is a rod-shaped portion and a portion that is either a fixed portion or a retaining portion. The head 82 is the other of the fixed portion or the retaining portion. In this embodiment, as in the third embodiment, the fixed portion has an insertion hole 23 formed in the reinforcement 20. This makes it easy to visually check the insertion hole 23 through the through hole 35, making it easy to pass the tail 81 through the through hole 35 of the base material 34 and the insertion hole 23 of the attachment target member 20.

[0093] Two tails 81 are provided. Each tail 81 extends over a long length. The head 82 connects one end of the two tails 81 to each other. The head 82 is formed in a circular ring shape. The diameter of the head 82 is larger than the diameter of the insertion hole 23. Here, the tail 81 is the retaining portion, and the head 82 is the fixing portion. In this case, the split pin 80 is inserted into the insertion hole 23 from the inside of the reinforcement 20. When the tail 81 is the fixing portion and the head 82 is the retaining portion, the split pin 80 is inserted into the insertion hole 23 from the outside of the reinforcement 20.

[0094] The manner of bending the tail 81 is not particularly limited as long as it can hold the flat wire harness 130. For example, in the example shown in FIG. 13, the tail 81 is provided with a bent portion 81c at a tip end portion from the through hole 35. In this case, a base end portion from the bent portion 81c is a rod-shaped portion 81a, and a tip end portion from the bent portion 81c is a slip-out prevention portion 81b. In the tail 81, the bent portion 81c may be provided inside the through hole 35 or at a base end portion from the through hole 35. The bent portion 81c may not be provided in the tail 81. In this case, the tail 81 may extend in a straight line obliquely from a connection portion with the head 82, and a tip end portion from the through hole 35 may be located on the outer periphery side of the through hole 35.

[0095] In addition, for example, in the example shown in FIG. 13, both of the two tails 81 are bent. Only one of the two tails 81 may be bent. For example, in the example shown in FIG. 13, the tips of the two tails 81 extend in opposite directions. The tips of the two tails 81 may extend in the same direction. The tips of the two tails 81 may extend in directions that intersect with each other in a plan view. For example, in the example shown in FIG. 13, the tips of the tails 81 extend along the width direction of the base material 34. The tips of the tails 81 may extend along the extension direction of the base material 34.

[0096] When attaching the flat wire harness 130 using the split pin 80, first, as shown in FIG. 14, the flat wire harness 130 and the reinforcement 20 are aligned so that the axial direction of the through hole 35 of the base material 34 coincides with the axial direction of the insertion hole 23 of the reinforcement 20. Then, the split pin 80 with the tail 81 remaining straight is inserted into the through hole 35 and the insertion hole 23, and the head 82 is slid toward the base material 34. Here, the split pin 80 is inserted from the inside of the reinforcement 20. In this case, the split pin 80 is inserted until the head 82 comes into contact with the inner surface 22 of the reinforcement 20. In FIG. 14, the split pin 80 before insertion is shown by a solid line, and the split pin 80 after insertion is shown by a two-dot chain line. The split pin 80 is easy to insert into the through hole 35 and the insertion hole 23 because the thickness of the split pin 80 is equal to or smaller than the diameter of the insertion hole 23 and the diameter of the through hole 35. The thickness of the split pin 80 is the sum of the thicknesses of the two tails. Furthermore, because the tail 81 of the split pin 80 before bending deformation extends linearly, the head 82 can be easily moved toward the base material 34.

[0097] When the head 82 reaches the inner surface 22 of the reinforcement 20, the tail 81 is then bent as shown in Fig. 15. In Fig. 15, the split pin 80 before bending is indicated by a solid line, and the split pin 80 after bending is indicated by a two-dot chain line. By bending the tail 81, the flat wire harness 130 is attached to the reinforcement 20, resulting in the flat wire harness mounting structure 410 in the state shown in Fig. 13.

[0098] [Note] The configurations described in the above embodiments and modifications can be appropriately combined as long as they are not mutually contradictory. For example, when multiple mounting parts are provided, mounting parts having different configurations may be adopted as the first mounting part and the second mounting part among the multiple types of mounting parts. [Explanation of symbols]

[0099] 10, 110, 210, 310, 410 Flat wire harness mounting structure 20 Reinforcement (attachment target material) 21 Exterior 22 Inside 23 Insertion hole (fixing part) 30 Flat Wire Harness 32 Electric wire (linear transmission component) 33a Conductor core wire 33b Covering layer 34 Base material 35 Through hole 40 Mounting part 41 Stud bolt (rod-shaped part) 42 First end 43 Second end 44 Locking recess 46 Fixed part 50 Fastening member (retaining part) 51 Cap body 52 Insertion part 53 Flange 54 Elastic locking piece 60, 260 pins 61, 261 Rod-shaped part 62, 262 Retaining part 62a First retaining part 62b Second retaining part 64, 64a, 64b, 264 Bending part 70 Volts 71 Shaft part (rod-shaped part) 72 Head (retaining part) 74 Fastening member (fixing part) 76 Washer 80 Cotter pin 81 Tail 81a Rod-shaped part 81b Retaining part 81c Bending part 82 heads (fixed part)

Claims

1. A mounting target member; A flat wire harness arranged along an outer surface of the mounting target member; An attachment portion that attaches the flat wire harness to the attachment target member; Equipped with The flat wire harness includes a plurality of linear transmission members and a base material that holds the plurality of linear transmission members in a flat, aligned state, a through hole is formed in a portion of the base material where the plurality of linear transmission members are not disposed, The mounting portion includes a rod-shaped portion that passes through the through hole, a fixing portion provided at a first end of the rod-shaped portion and that fixes the rod-shaped portion to the mounting target member, and a retaining portion provided at a second end of the rod-shaped portion and that prevents the rod-shaped portion from coming out of the through hole, an outer dimension of the retaining portion is larger than a dimension of the through hole, and the dimension of the through hole is equal to or larger than a thickness of the rod-shaped portion; The fixing portion integrally fixes the attachment member and the rod-shaped portion, the rod-shaped portion is a stud bolt, the retaining portion is a fastening member fastened to the stud bolt, The outer dimension of the fastening member is larger than the dimension of the through hole, A locking recess is formed on the outer periphery of the stud bolt, the fastening member includes a cap body that is placed over the stud bolt, a flange that protrudes outward from an outer periphery of the cap body, and an elastic locking piece that is formed on an inner periphery of the cap body and locks onto a periphery of the locking recess of the stud bolt, The outer dimension of the flange is larger than the dimension of the through hole, A tip of the stud bolt passes through the through hole of the base material, The cap body has a cylindrical insertion portion through which the stud bolt is inserted, The flange is provided on an outer periphery of an end portion of the insertion portion on a base end side of the stud bolt.

2. The mounting structure for the flat wire harness according to claim 1, The end of the insertion portion on the base end side of the stud bolt is positioned outside the through hole of the base material.

Images