Cable harness fixing structure and cable harness

Abstract

Cable harness fixing structure (1, 201) with: a flat element (10) comprising a first layer (12) and a second layer (14) and installed inside a vehicle (80), wherein the second layer is layered onto a first main surface (12a) of the first layer (12) and is softer than the first layer (12); and a cable harness (20) comprising an electrical conductor (22) arranged along the flat element (10) and a fixing element (50, 150, 250) attached to the electrical conductor (22) and fixing the electrical conductor (22) to the flat element (10), wherein the fixing element (50, 150, 250) has: a through-hole snap-fit ​​piece (52, 152, 252) in which a tip section (52a) is formed in such a way that it is able to pass through a part of the first layer (12) from a second main surface (12b) on a side of the first layer (12) opposite the first main surface (12a), which is not provided with a hole, and which has passed through the first layer (12) and snapped into place on the first main surface (12a); a limiting piece (54, 254) which is provided at such a distance to the through-bolt locking piece (52, 152, 252) that the through-bolt locking piece (52, 152, 252) is prevented from passing through a surface of the flat element (10); and a column (56, 256) that connects the through-bolt locking piece (52, 152, 252) and the limiting piece (54, 254).

Description

TECHNICAL AREA

[0001] The present invention relates to a technique for fixing a cable harness to a mounting object. TECHNICAL BACKGROUND

[0002] A technique for fixing a wiring harness to a mounting object is described, for example, in JP 2012-10474 A and JP 2000-335329 A. JP 2012-10474 A discloses a technique for fixing a wiring harness to a mounting object using a clamp (also referred to as a clip). JP 2000-335329 A discloses a technique for fixing a roof wiring harness to a headliner (also referred to as a headliner or roof lining).

[0003] Here, if the wiring harness is fixed using the clamp as described in patent document 1, a hole for fixing the clamp must be formed in the mounting object. However, if the mounting object of the wiring harness is an exposed interior element, such as the headliner described in patent document 2, the clamp may be exposed inside the element if a hole for fixing the clamp is formed in the element and the clamp is inserted into the hole and locked in place. Depending on the mounting object, as described above, it may in some cases be inappropriate to use the technique of forming the hole for fixing the clamp and fixing the clamp.

[0004] Thus, in JP 2000-335329 A, the roof wiring harness is fixed to the headliner using an adhesive such as self-adhesive tape or a melting material.

[0005] JP H09-277853A discloses a wiring harness that is wired to the back of an installation panel. The panel consists of a core material layer, a foam resin layer, and a surface skin. Grooves for wiring harnesses are formed on the back of the core material layer. The wiring harness consists of flat wiring materials and is secured in the groove with a clip that is inserted into the hole in the panel from a position above the harness. The perimeter wall of the groove is made of foamed resin. This wall prevents the wiring harness from coming into contact with other parts, as its elasticity ensures the protection of the harness.

[0006] JP 2002-19545 A discloses an arrangement in which a maintenance opening in the upper part of a seat riser can be opened / closed by means of an opening cover. A hinge is provided for opening and closing, and a cavity is formed between an element rotated by the hinge and an upper surface of a fabric element. The element is guided through the cavity section and extends from a curved section in the forward or backward direction of a vehicle body to connect with a large curved section. The element is secured by a bracket at a position immediately in front of the empty section in the width direction of the vehicle, and conversely, the element is secured by a bracket at a position immediately in front of the large curved section in the longitudinal direction of the vehicle body. OVERVIEW OF THE INVENTION TASKS TO BE SOLVED BY THE INVENTION

[0007] However, there is a possibility that the number of manufacturing processes required for assembling a vehicle may increase if a fixing method uses an adhesive such as self-adhesive tape or melt material.

[0008] One object of the present invention is to provide a technique that makes it possible to easily fix a cable harness to a mounting object when assembling a vehicle, even if that object is not suitable for having a clamp hole for fixing a clamp. MEANS OF SOLVING THE TASK

[0009] The task is solved by a cable harness fixing structure according to a first aspect, which comprises: a flat element having a first layer and a second layer and is installed inside a vehicle, wherein the second layer is layered on a first main surface of the first layer and is softer than the first layer;and a cable harness comprising an electrical conductor arranged along the flat element and a fixing element attached to the electrical conductor and fixing the electrical conductor to the flat element, the fixing element comprising: a through-bolt detent having a pointed section shaped such that it is able to pass from a second main surface on a side of the first layer opposite the first main surface through a portion of the first layer not provided with a hole, and pass through the first layer and latch onto the first main surface; a limiting piece provided at such a distance from the through-bolt detent that the through-bolt detent is prevented from passing through a surface of the flat element; and a column connecting the through-bolt detent and the limiting piece.

[0010] The cable harness fixing structure according to a second aspect is the cable harness fixing structure according to the first aspect, wherein the flat element further comprises a third layer which is layered on one side of the second layer opposite the first layer and is harder than the second layer.

[0011] The cable harness fixing structure according to a third aspect is the cable harness fixing structure according to the first or the second aspect, wherein the electrical conductor is arranged in a flat state.

[0012] The cable harness fixing structure according to a fourth aspect is the cable harness fixing structure according to the third aspect, wherein the cable harness further comprises a conductor fixing strip part which is designed as a strip, and the electrical conductor is fixed by sewing or welding.

[0013] The cable harness fixing structure according to a fifth aspect is a cable harness fixing structure according to one of aspects one to four, wherein the cable harness further comprises a fixing element mounting strip part, which is designed as a strip to which the fixing element is attached and which is arranged between the boundary piece and the first layer.

[0014] The cable harness fixing structure according to a sixth aspect is the cable harness fixing structure according to one of aspects one to five, wherein the fixing element comprises: a first element with the through-bolt detent and the column, wherein a hole is formed in the column; and a second element with an insertion part that is inserted into the hole to maintain a state in which the through-bolt detent is locked to the flat element.

[0015] The cable harness fixing structure according to a seventh aspect is the cable harness fixing structure according to one of aspects one to six, wherein the flat element and the fixing element have the property that the through-hole locking piece of the fixing element can pass through a part in the flat element that is not provided with a hole and can lock into place with this part.

[0016] A wiring harness according to an eighth aspect comprises: an electrical conductor arranged along a flat element having a first layer and a second layer, installed inside a vehicle, the second layer being layered on a first principal surface of the first layer and being softer than the first layer; and a fixing element attached to the electrical conductor to fix the electrical conductor to the flat element, the fixing element comprising: a through-hole detent, wherein a pointed section is formed such that it is able to pass from a second principal surface on a side of the first layer opposite the first principal surface through a portion of the first layer that is not provided with a hole, and, upon passing through the first layer, to be detented on a side of the first principal surface;a limiting piece provided at such a distance from the through-bolt locking piece that the through-bolt locking piece is prevented from passing through a surface of the flat element; and a column connecting the through-bolt locking piece and the limiting piece. EFFECT OF INVENTION

[0017] According to aspects one through eight, the fixing element can pass directly through the first layer in the flat element and be locked into place as is. The second layer is softer than the first, so there is little risk of the push-through locking piece protruding through it. This prevents the push-through locking piece from being exposed. According to the above design, the wiring harness can easily be fixed to a mounting object during vehicle installation, even one that does not have a clamp hole for securing a clamp.

[0018] If the push-through locking piece does not penetrate the second layer, there is a possibility that a section of the second layer pressed down by the push-through locking piece will be lifted. In this case, too, according to the second aspect, the third layer is harder than the second layer, thus preventing the third layer from being lifted. Accordingly, if the third layer is on the inside, the lift caused by the push-through locking piece is hardly noticeable from the inside. Even if the push-through locking piece does penetrate the second layer, its exposure may be prevented by the third layer. In this case, there is a possibility that the third layer is harder than the push-through locking piece, for example, so that the push-through locking piece, once it reaches the third layer, is prevented from penetrating it.For example, it is possible that the thickness of the third layer is greater than the length dimension of the tip section of the through-bolt notch that is not covered by the second layer, thus preventing the through-bolt from passing through the third layer.

[0019] For example, if the fixing elements are made of the same material but in different shapes, there may be an almost contradictory relationship between the penetration properties (the degree to which it penetrates the first layer) and the locking properties (the degree of difficulty of release once the fixing element has locked into place after penetrating the first layer) of the through-hole locking piece. According to the third aspect, in this case, too, the electrical conductors are arranged in a flat state so that if they vibrate due to vehicle vibration, the amplitude of the vibration can be kept small. Therefore, even if the locking properties of the through-hole locking piece are weak, the fixing element is difficult to release from the flat element. Accordingly, both the required penetration properties and the necessary locking properties can easily be achieved.

[0020] The electrical conductors can be arranged in the flat state, particularly according to the fourth aspect. It is also possible to press the fixing element onto the conductor fixing strip part and attach it to that.

[0021] According to the fifth aspect, in particular, if the same types of fixing elements are used for several types of flat elements, each having a first layer of different thickness, the thickness difference can be absorbed by the fixing element attachment strip part.

[0022] According to the sixth aspect, the insertion part is specifically inserted into the hole, so that a state is easily maintained in which the through-bolt is locked to the flat element. As long as the insertion part has not yet been inserted into the hole to maintain the locking state of the through-bolt, the through-bolt can be small. Accordingly, the through-bolt can easily pass through the flat element. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic, expanded perspective view of a cable harness fixing structure according to an exemplary embodiment and a mounting object for it. Fig. Figure 2 is a schematic top view of the cable harness fixing structure according to the embodiment. Fig. Figure 3 is a cross-sectional view of the cable harness fixing structure in section III-III. Fig. 2. Fig. Figure 4 is a schematic perspective view of a cable harness according to the exemplary embodiment. Fig. Figure 5 is a schematic perspective view of a modified example of the wiring harness. Fig. Figure 6 is a schematic perspective view of a fixing element according to the exemplary embodiment. Fig. Figure 7 is a schematic cross-sectional view of a first modification example for the cable harness fixing structure. Fig. Figure 8 is a schematic cross-sectional view of a second modified example of the cable harness fixing structure. Fig. Figure 9 is a schematic cross-sectional view of a third variation example for the cable harness fixing structure. Fig. Figure 10 is an explanatory drawing illustrating a cable harness fixed to a flat element. Fig. Figure 11 is a schematic cross-sectional view of a modified example for electrical conductors. Fig. Figure 12 is a schematic cross-sectional view of a first modification example for the fixing element. Fig. Figure 13 is a schematic front view of a second variation example for the fixing element. Fig. Figure 14 is an explanatory drawing illustrating the elastically deformed fixing element according to the second variation example. Fig. Figure 15 is a schematic cross-sectional view of the cable harness fixing structure with the fixing element according to the second modification example. EXECUTIONS OF THE INVENTION Example of implementation

[0023] The following describes a cable harness fixing structure according to an exemplary embodiment. Fig. Figure 1 is a schematic, expanded perspective view of a cable harness fixing structure 1 according to the embodiment and a vehicle body 80 on which the cable harness fixing structure 1 is to be mounted. Fig. Figure 2 is a schematic top view of the cable harness fixing structure 1 according to the embodiment. Fig. Figure 3 is a cross-sectional view of the cable harness fixing structure 1 in section III-III from Fig. 2.

[0024] The cable harness fixing structure 1 according to the embodiment has a flat element 10 and a cable harness 20 which is fixed to the flat element 10.

[0025] The flat element 10 is an element installed inside a vehicle. The flat element 10 has a first layer 12 and a second layer 14. The flat element 10 also has a third layer 16.

[0026] The second layer 14 is softer than the first layer 12. The third layer 16 is harder than the second layer 14. Comparing the first layer 12 and the third layer 16, either the first layer 12 or the third layer 16 can be harder, or they can have the same hardness.

[0027] The second layer 14 is layered on a first main surface 12a of the first layer 12. The third layer 16 is layered on a side of the second layer 14 opposite the first layer 12. The first layer 12, the second layer 14, and the third layer 16 are thus layered in this order. In the following description, the flat element 10 is installed inside such that a surface of the flat element 10 on a side where the second layer 14 is located with respect to the first layer 12 faces an inner side; however, it can also be mounted inside such that a surface of the flat element 10 on a side where the first layer 12 is located with respect to the second layer 14 faces the inner side.

[0028] Specifically, the flat element 10 is described here as a headliner. Accordingly, the flat element 10 is attached to an inner surface of a roof section 82 of the vehicle body 80. However, it is also possible that the flat element 10 is an element installed inside another part of a vehicle, such as a door panel. The cable harness fixing structure 1 is advantageous if a surface of the flat element 10 is exposed inside.

[0029] A headliner of this type is known to have a foamed plastic layer for sound absorption or thermal insulation and a reinforcing layer on both sides of the foamed plastic layer to strengthen it. In the following description, the second layer 14 of the flat element 10 is the foamed plastic layer described above, and the first layer 12 and the third layer 16 are each the reinforcing layer described above. For example, polyurethane plastics, polypropylene plastics, and modified polyphenylene ether plastics are used as the material for the foamed plastic layer. It is also possible that, as an embodiment of the reinforcing layer, a sheet material provided separately from the foamed plastic layer is bonded to a sheet material that forms the foamed plastic layer.In this case, the sheet material forming the reinforcement layer could be, for example, a resin sheet material, a sheet material made of fiberglass, carbon fiber, basalt fiber, natural fiber, organic fiber, or a nonwoven fabric. A so-called top layer can also serve as the reinforcement layer. The top layer is a hard layer that forms on the surface of the foamed plastic layer during its formation, using the same plastic material. The first layer (12) and the second layer (16) can be of the same type or different.

[0030] If the flat element 10 is the headliner, it is possible that a surface covering layer, not shown in the drawings, is applied to the side of the third layer 16 opposite the second layer 14. This surface covering layer is made of a material such as a non-woven fabric, a woven fabric, or a knitted fabric. A major surface area of ​​the surface covering layer on the side opposite the third layer 16 is defined as the inward-facing surface of the flat element 10 and is exposed inside the vehicle. It is also possible that a film is applied as a rear surface layer to the side of the first layer 12 opposite the second layer 14.In the case of the flat element 10, the first main surface 12a of the first layer 12, or, if the rear surface layer is layered, a main surface of the rear surface layer on a side of the rear surface layer opposite the first layer 12, is defined as the surface facing the vehicle body 80. In the following, in some cases, the inward-facing surface of the flat element 10 is simply referred to as the front and the surface facing the vehicle body 80 simply as the back.

[0031] The thickness of each layer of the flat element 10 is appropriately determined based on a specification applicable to the flat element 10. It is possible that the flat element 10 may have a section with a different thickness. For example, the flat element 10 may initially be formed as a flat, plate-like shape and then heated and cold-pressed, which partially bends and deforms it into a desired shape. In this case, the thickness of a section bent and deformed by heating and cold-pressing may be less than that of a section that was not bent and deformed. An opening 18 is formed in the flat element 10. The opening 18 is a part in which an electrical component, such as a light bulb, is located.The cable harness 20 is accordingly arranged on the flat element 10 in such a way that it bypasses the opening 18.

[0032] Fig. Figure 4 is a schematic perspective view of the cable harness 20 according to the embodiment.

[0033] The wiring harness 20 has electrical conductors 22 and a fixing element 50. The wiring harness 20 also has a conductor fixing strip part 30. The wiring harness 20 further has a fixing element mounting strip part 40.

[0034] The electrical conductors 22 are arranged along the flat element 10. In particular, the electrical conductors 22 are arranged such that they overlap the flat element 10 in at least a portion of a region in a longitudinal direction. The electrical conductors 22 can be, for example, insulated electrical conductors, each comprising a conductor and an insulating sheath for encasing the conductor. The conductor is made of a conductive material such as copper or aluminum. The conductor can be a single wire or a stranded wire. The insulating sheath can be formed, for example, by extruding a plastic such as polyvinyl chloride (PVC), polyethylene (PE), or polypropylene (PP) around the conductor, or, for example, by applying enamel coating (also known as wire enameling) all around the conductor and oven-curing the enamel coating.

[0035] The number of electrical conductors 22 can be at least one. In the present embodiment, several electrical conductors 22 are provided. The several electrical conductors 22 are arranged in a flat state on the flat element 10. In the example described in the present embodiment, the several electrical conductors 22 run from the outside of the flat element 10 in a bundled form towards the flat element 10. The several electrical conductors 22 branch out midway, and each of the branched electrical conductors 22 runs to several parts of the flat element 10.In this process, each branch conductor section 23 splits at a position near an edge of the flat element 10 and runs along the shortest possible path to a position of a target element 90, which is the other end of the connection, bypassing sections such as the opening 18, which are unsuitable for arranging the electrical conductors 22. In the example in... Fig. 2. All connection parts of the branch line sections 23 are connected to the target elements 90 on the flat element 10; however, some connection parts may extend through the flat element to the rear of the vehicle. The target element 90 can be, for example, a lighting element, a sensor, or an antenna.

[0036] Each branch line section 23 is connected to the target element 90, which is installed on the vehicle via a connector 24 at one end of the branch line section 23.

[0037] The conductor fixing strip part 30 is designed as a strip. The electrical conductors 22 are fixed to the conductor fixing strip part 30. This defines the path of the electrical conductors 22. There are no particular restrictions on the material used to form the conductor fixing strip part 30. In the example in Fig. 4. The electrical conductors 22 are sewn to the conductor fixing strip part 30 with a thread 32 and thus fixed to the conductor fixing strip part 30. The conductor fixing strip part 30, to which the electrical conductors 22 can be sewn, is applicable.

[0038] Sewing with a sewing machine or, of course, hand sewing can be used as a method for attaching the electrical wires 22. If the electrical wires 22 are sewn on using a sewing machine, it is possible to prepare a sewing needle thread and a bobbin thread separately from the electrical wires 22 in the sewing machine, or to use the electrical wires 22 themselves as the sewing needle thread or bobbin thread in the sewing machine.

[0039] However, the method for fixing the electrical conductors 22 to the conductor fixing strip part 30 is not limited to sewing. The electrical conductors 22 can, for example, be fixed to the conductor fixing strip part 30 by welding, as is the case with a Fig. This is the case as illustrated in the cable harness 120 shown in Figure 5. In this case, the conductor fixing strip 30 is used, which enables the electrical conductors 22 to be welded to it. Possible welding methods include, for example, ultrasonic welding, laser welding, or thermal welding. The electrical conductors 22 can be fixed to the conductor fixing strip 30, for example, by an adhesive or self-adhesive tape. It is also possible that the conductor fixing strip has a two-layer strip material and that the electrical conductors 22 lie between the two layers of the strip material and are fixed by them.

[0040] The strip material, which forms the conductor fixing strip part 30, is provided separately for each branch conductor part 23; however, it is also possible that the several branch conductor parts 23 are fixed to one strip material.

[0041] In the example in Fig. 2. The electrical conductors 22 are arranged in a straight line on the conductor fixing strip part 30; however, there may also be a section that is curved along the way. The branch conductor part 23a, for example, is bent and arranged so that it bypasses the opening 18, and the parts on both sides of the bent section are fixed to different strip material. However, the bent section and both sides of it may be fixed to the same strip material. If the direction of travel of the electrical conductors 22 along the shortest path from the branch position and the direction for inserting the connector 24 at the end of the electrical conductors 22 into a receiving connector on the target element 90 differ, it is possible that a portion of the electrical conductors 22 is bent around the portion extending from the connector 24 at the end of the electrical conductors 22.In this case, it is also possible that the curved section is fixed to the conductor fixing strip part 30.

[0042] The conductor fixing strip part 30 has a strip material that covers the electrical conductors 22 from one side. The electrical conductors 22 are arranged and fixed to a main surface of the conductor fixing strip part 30. The cable harness 20 is arranged on the flat element 10 such that the strip material is located on the side of the flat element 10. However, the cable harness 20 is arranged on the flat element 10 such that the electrical conductors 22 are located on the side of the flat element 10. It is possible that the electrical conductors 22 may cross from one main surface to the other main surface of the conductor fixing strip part 30.

[0043] Fig. Figure 6 is a schematic perspective view of the fixing element 50 according to the embodiment.

[0044] The fixing element 50 is attached to the electrical conductors 22. The fixing element 50 is a component for fixing the electrical conductors 22 to the flat element 10. The fixing element 50 comprises, in particular, a through-bolt locking piece 52, a limiting piece 54, and a column 56. The fixing element 50 is made of, for example, a plastic or a metal. The fixing element 50 may, for example, be an injection-molded part formed using molds or the like.

[0045] In the through-bolt locking element 52, a pointed section 52a is designed such that it can be guided through the first layer 12 from a second main surface 12b on a side of the first layer 12 opposite the first main surface 12a. That is, the through-bolt locking element 52 is designed such that it can pass through the flat element 10 from the rear side. The through-bolt locking element 52 can pass through a section in the flat element 10 in which no hole is formed. The through-bolt locking element 52 is locked to the first main surface 12a when it passes through the first layer 12. The through-bolt locking element 52 is, for example, designed in a conical shape (shown here as a cone shape). Since the through-hole snap piece 52 is formed in a conical shape, the forming tool can be easily removed when the fixing element 50 is formed in one piece using forming tools.The lower part 52b of a cone is a part connected to the column 56, which snaps into place with the first main surface 12a when it passes through the first layer 12. The tip of the cone is the tip section 52a of the through-pass locking piece 52.

[0046] The limiting piece 54 is positioned at a distance from the through-hole snap piece 52. The limiting piece 54 prevents the through-hole snap piece 52 from passing completely through the surface of the flat element 10. For example, the limiting piece 54 is hooked and locked onto the second main surface 12b of the first layer 12 or onto the back side of the flat element 10, thus preventing the through-hole snap piece 52 from moving further in the direction of passage. Accordingly, any shape and size of the limiting piece 54 is possible, as long as the through-hole snap piece 52 can be hooked onto a circumferential edge of a hole formed in the first layer 12 and a layer closer to the back side than the first layer 12, when the through-hole snap piece 52 passes through the first layer 12 and the layer closer to the back side.The limiting piece 54 is designed here in the form of a disc and has the same axial center as the through-bolt locking piece 52. In this case, the limiting piece 54 is preferably at least as large as or larger than the through-bolt locking piece 52. As in . Fig. As illustrated in Figure 6, the outer perimeter of the main surface on a side of the boundary piece 54 opposite a surface connected to the column 56 (hereinafter referred to in some cases as the lower surface of the boundary piece 54) preferably has a chamfered shape as a rounded shape.

[0047] The column 56 connects the through-bolt locking piece 52 and the limiting piece 54. The column 56 is formed here in a column shape (cylindrical) that is thinner than the lower part 52b of the through-bolt locking piece 52 and thinner than the limiting piece 54. The center of axis of the column 56 coincides with the center of axis of the through-bolt locking piece 52 and the center of axis of the limiting piece 54. In a state where the fixing element 50 is inserted into the flat element 10, at least part of the column 56 is located in the first layer 12. In a state where the fixing element 50 is attached to the fixing element mounting strip part 40, at least part of the column 56 is located in the fixing element mounting strip part 40.

[0048] The fixing element attachment strip part 40 is designed as a strip. The fixing element attachment strip part 40 is a part to which the fixing element 50 is attached. The fixing element attachment strip part 40 is arranged between the limiting piece 54 and the first layer 12. For example, it is possible that the fixing element attachment strip part 40 consists of the same strip material as the conductor fixing strip part 30. In this case, a part of the strip material that is not used to fix the electrical conductors 22 can be used as the fixing element attachment strip part 40, such as a part to which no thread 32 is sewn, or a part that is not welded to the cover of the electrical conductors 22. In the example in Fig. 2. The fixing element mounting strip part 40 is provided on a lateral side of the electrical conductors 22; that is, in a position in which the fixing element 50 is attached, it is a position lateral to the electrical conductors 22. However, this configuration is not required. The fixing element 50 can be, as shown in Fig. As illustrated in Figure 7, the fixing element 50 can, for example, be placed between the several electrical conductors 22 that are arranged in parallel. Fig. Figure 8 illustrates this, for example, by placing the fixing element 50 under the electrical conductors 22. In this case, it is possible, for example, that the fixing element 50 is attached to a part of the strip material that overlaps with the electrical conductors 22 but to which they are not fixed, in a state where part of a region of the electrical conductors 22 is not fixed longitudinally to a strip material.

[0049] As in Fig. As illustrated in Figure 9, a fixing element mounting strip part 140 can, for example, be provided separately from the cable fixing strip part 30 and joined to the cable fixing strip part 30. Possible joining methods include, for example, welding or a double-sided self-adhesive tape and an adhesive 142. In the example in Fig. 9 The fixing element attachment strip part 140 is connected to a main surface 30b of the conductor fixing strip part 30 on one side opposite a main surface 30a on which the electrical conductors 22 are arranged, but can also be connected to the main surface 30a on which the electrical conductors 22 are arranged. In this case, the electrical conductors 22 can be located between the fixing element attachment strip part 140 and the conductor fixing strip part 30.

[0050] The fixing elements 50 can be used in the same way as in Fig. Figure 9 illustrates that the fixing elements 50 can be provided on both lateral sides of the electrical conductors 22. The fixing elements 50 can, of course, also be provided on both lateral sides of the electrical conductors 22 in such a way that the fixing element mounting strip part 40 and the conductor fixing strip part 30 are arranged as shown in Figure 9. Fig. 2 consist of a strip material.

[0051] When the fixing element 50 is attached to the fixing element mounting strip part 40, the strip material forming the fixing element mounting strip part 40 may optionally have been previously provided with a hole through which the fixing element 50 is inserted. If the hole through which the fixing element 50 is inserted has been previously provided, it may pass through the through-bolt 52 or the limiting piece 54. If the through-bolt 52 passes through the hole, the hole may, for example, be round and smaller than the lower part 52b of the through-bolt 52. If, for example, the limiting piece 54 passes through the hole, the hole may be slotted with a length substantially equal to the diameter of the limiting piece 54.If the hole through which the fixing element 50 is inserted is not prepared beforehand, it is possible that the push-through locking piece 52 will be inserted into the fixing element mounting strip part 40 and pass through it.

[0052] A work step for fixing the cable harness 20 to the flat element 10 using the fixing element 50 is now described. Fig. Figure 10 is an explanatory drawing illustrating the cable harness 20 fixed to the flat element 10.

[0053] First, as in Fig. 3. The cable harness 20 is manufactured, in which the fixing element 50 is fixed to the electrical conductors 22. Then the cable harness 20 is arranged in a form that corresponds to an arrangement on the flat element 10.

[0054] Then, as in Fig. Figure 10 shows the tip section 52a of the through-bolt locking piece 52 of the fixing element 50 directed towards the rear of the flat element 10. The portion of the flat element 10 located in front of the through-bolt locking piece 52 is a section in which no hole has been previously formed. In this state, pressure is applied to the lower surface of the limiting piece 54 to insert the through-bolt locking piece 52 into the flat element 10 from the rear.

[0055] When the limiting piece 54 is hooked onto the fixing element attachment strip part 40 on the back of the flat element 10, further pressure is stopped. Accordingly, the through-bolt locking piece 52 engages, as shown in Fig. Figure 3 illustrates, through the first layer 12, and the lower part 52b of the through-hole snap piece 52 snaps into the first main surface 12a of the first layer 12. The lower part 52b of the through-hole snap piece 52 can be snapped into the first main surface 12a of the first layer 12 and thereby also occupy a part of the second layer 14.

[0056] If the lower part 52b of the through-hole snap piece 52 is engaged on the first main surface 12a of the first layer 12, it is possible that the through-hole snap piece 52 may be engaged, for example, due to a first and / or a second engagement state, which are described below.

[0057] The initial engagement state is as follows. When the through-bolt 52 is inserted into the first layer 12, it is elastically deformed such that the diameter of the lower part 52b decreases under the counterforce of the first layer 12. When the through-bolt 52 passes through the first layer 12 in this state, it undergoes less elastic deformation because the second layer 14 is softer than the first layer 12. Thus, the lower part 52b of the through-bolt 52 expands outwards from the hole formed in the first layer 12 as the through-bolt 52 passes through, and can therefore be engaged at the circumferential edge of the hole.

[0058] The second engagement state is as follows. When the through-bolt 52 is inserted into the first layer 12, the first layer 12 is elastically deformed such that it expands radially relative to the through-bolt 52 under its force. The hole that forms in the first layer 12 in this state, corresponding to the passage of the through-bolt 52, becomes smaller than the lower part 52b of the through-bolt 52, since the elastic deformation of the first layer 12 decreases after the through-bolt 52 has passed through. Thus, the lower part 52b of the through-bolt 52 can be engaged in the circumferential edge of the hole.

[0059] It is preferred that the through-hole locking piece 52 can protrude far enough through the first layer 12 that a worker can press on the lower surface of the limiting piece 54 with a finger WS as in Fig. 10 can ensure that the through-bolt 52 passes through the first layer 12. It is possible to change the degree of penetration of the through-bolt 52 through the first layer 12 according to a shape of the through-bolt 52, in particular a pointedness of the tip section 52a of the through-bolt 52, and properties (hardness and elasticity) of materials that, for example, form the through-bolt 52 and the first layer 12.

[0060] The through-bolt 52, which is engaged with the first main surface 12a of the first layer 12, is preferably difficult to detach from the first layer 12, so that it does not fall out during use of the vehicle. It is possible to modify the degree of difficulty with which the through-bolt 52, engaged with the first main surface 12a of the first layer 12, detaches from the first layer 12, for example by modifying the shape of the through-bolt 52, in particular the degree of expansion of the lower part 52b of the through-bolt 52 with respect to the hole formed in the first layer 12 when the through-bolt 52 has passed through the hole, and / or by modifying a property (hardness and elasticity) of a material forming the through-bolt 52 and the first layer 12.

[0061] Here, the sum of a length dimension of the column 56 and a height dimension of the through-bolt 52 is preferably less than or equal to the sum of a thickness dimension of the fixing element attachment strip part 40 and a thickness dimension of the flat element 10, and is particularly preferably less than or equal to the sum of the thickness dimension of the fixing element attachment strip part 40 and a thickness dimension from the second layer 14 to the back side of the flat element 10. Accordingly, it can be more reliably prevented that the through-bolt 52 protrudes through the flat element 10 and is exposed on the front side.If the sum of the length dimension of the column 56 and the height dimension of the through-bolt 52 is greater than the sum of the thickness dimension of the fixing element attachment strip part 40 and the thickness dimension of the flat element 10, it is possible that the third layer 16 is designed in such a way that the fixing element 50 cannot pass through the third layer 16, thus preventing the through-bolt 52 from passing through the flat element 10 and being exposed on the front side.

[0062] Here, the length dimension of the column 56 is preferably greater than or equal to a thickness dimension from the first layer 12 to the back of the flat element 10 and preferably greater than or equal to the sum of the thickness dimension of the fixing element attachment strip part 40 and the thickness dimension from the first layer 12 to the back of the flat element 10. Accordingly, the through-bolt snap piece 52 can pass through the first layer 12, and the lower part 52b of the through-bolt snap piece 52 can be more reliably snapped with the first main surface 12a of the first layer 12.

[0063] It is possible that a flat element 10 may have a section with a different thickness than described above. In this case, too, the fixing element attachment strip part 40 is arranged between the boundary piece 54 and the first layer 12 and is sometimes compressed so that the fixing element attachment strip part 40 can absorb the difference in the thickness of the flat element 10. Accordingly, one fixing element 50 may be sufficient for the section with the different thickness of the flat element 10.

[0064] Then all fixing elements 50 are pressed into the flat element 10 and thus locked into place, allowing the cable harness 20 to be fixed to the flat element 10. If several branch line sections 23 are present, it is possible to position one branch line section 23, press the fixing element 50 provided on the branch line section 23 into the flat element 10, and then position the other branch line section 23. It is also possible to press the fixing element 50 into the flat element 10 after all branch lines 23 have been positioned.

[0065] According to the above embodiment, the fixing element 50 can pass directly through the first layer 12 in the flat element 10 and be locked into place as is. The second layer 14 is softer than the first layer 12, so that the through-bolt locking piece 52 barely penetrates the second layer 14. This prevents the through-bolt locking piece 52 from being exposed. According to the above embodiment, the wiring harness 20 can also be easily fixed to a mounting object during vehicle assembly, even if that object does not have a clamp hole for fixing a clamp. The fixing element 50 can be attached to the electrical lines 22 beforehand, thus reducing the number of manufacturing steps required during vehicle assembly.

[0066] If the push-through locking piece 52 does not penetrate the second layer 14, there is a possibility that the section in the second layer 14, against which the push-through locking piece 52 presses, will be lifted. In this case as well, the third layer 16 is harder than the second layer 14, thus preventing the lifting of the third layer 16. Accordingly, if the third layer 16 is located on the inside, the lifting caused by the push-through locking piece 52 is hardly noticeable from the inside. Even if the push-through locking piece 52 does penetrate the second layer 14, exposure of the push-through locking piece 52 by the third layer 16 can be prevented.In this case, for example, it is possible that the third layer 16 is harder than the through-bolt 52, so that the through-bolt 52, once it has reached the third layer 16, is directly prevented from passing through it, or that the third layer 16 is harder than the first layer 12, so that the through-bolt 52, with the force with which it passed through the first layer 12, cannot pass through the third layer 16. For example, the thickness of the third layer 16 is greater than the length of the tip section of the through-bolt 52 not covered by the second layer 14, thus preventing the through-bolt 52 from passing through the third layer 16.

[0067] For example, if the fixing elements 50 are made of the same material but in different shapes, there may be an almost contradictory relationship between the penetration properties (the degree of penetration through the first layer 12) and the locking properties (the degree of difficulty of release once the fixing element 50 has locked in place after passing through the first layer 12) of the through-bolt locking piece 52. In this case as well, the electrical conductors 22 are arranged in a flat position so that, if the electrical conductors 22 vibrate due to vehicle vibration, the amplitude of the vibration can be kept small. Therefore, even if the locking properties of the through-bolt locking piece 52 are weak, the fixing element 50 will only release from the flat element 10 with difficulty.Accordingly, both the required penetration properties and the necessary locking properties can be easily achieved.

[0068] Since the conductor fixing strip part 30 is provided, the electrical conductors 22 can be easily arranged in the flat state. It is also possible to press the fixing element 50 into a free space in the strip material that forms the conductor fixing strip part 30 and attach it to it.

[0069] If the same type of fixing element 50 is used for flat elements 10 of different types, each having a first layer 12 of different thickness, the thickness difference can be absorbed by the fixing element attachment strip part 40. Examples of variations

[0070] In the embodiment described above, the multiple electrical conductors 22 are indeed arranged in the flat state on the flat element 10; however, this configuration is not necessary. As in Fig. As illustrated in Figure 11, the electrical wires 22 can be bundled. In the case of the Fig. In the illustrated example 11, the electrical conductors 22 are bundled in such a way that they have a round cross-section, but they can also be bundled in such a way that they have a different cross-sectional shape.

[0071] In the embodiment described above, the through-hole locking piece 52 of the fixing element 50 has a conical shape; however, this design is not necessary. For example, as is the case with a Fig. As is the case with the fixing element 150 illustrated in Figure 12, a through-bolt locking piece 152 is designed in such a way that an outer edge of a lower part 152b projects towards the limiting piece 54, or in other words, in such a way that a cone of lesser height than a cone of the lower part 152b is excluded from the base of the cone of the lower part 152b. If the through-bolt locking piece 152 is in the form shown in Figure 12, the following applies: Fig. Given the shape illustrated in Figure 12, the lower part 152b can easily deform elastically in the direction in which its diameter decreases. Likewise, the lower part 152b can deform elastically in the direction in which its diameter increases.

[0072] Fig. Figure 13 is a schematic front view of a second modified example of the fixing element 50. A fixing element 250 according to the second modified example differs from the fixing element 50 in that the fixing element 250 can better maintain a latching state of the through-bolt locking piece. The fixing element 250 has, in particular, a first element 251 and a second element 260.

[0073] The first element 251 has a through-bolt locking piece 252, a limiting piece 254, and a column 256. The through-bolt locking piece 252, the limiting piece 254, and the column 256 are formed in similar shapes to the through-bolt locking piece 52, the limiting piece 54, and the column 56 described above (column 256 is slightly thicker than column 56). In the first element 251, a hole 257 and a through-hole 258 are formed in the column 256.

[0074] The hole 257 extends from an opening in a lower surface of the limiting piece 254 to the through-bolt 252. The hole 257 has a bottom, and the position of the bottom is defined as corresponding to a position of the through-bolt 252. However, it is possible that the position of the bottom of the hole 257 does not reach the position of the through-bolt 252. It is also possible that the hole 257 extends to a pointed section of the through-bolt 252, so that the hole 257 has no bottom.

[0075] The through-hole 258 is configured such that it extends from a position in one side face of the column 256 to an opposite position. The hole 257 and the through-hole 258 are connected to each other. It is also possible that the through-hole locking element 252 is not conical, but rather shaped in a way that extends from the column 256 in both lateral directions. In this case, the through-hole locking element can be positioned between the through-hole 258 formed in the column 256 and the through-hole 258.

[0076] Hole 257 is formed in the first element 251, and thus, as in Fig. Figure 14 illustrates that a lower part of the through-bolt locking piece 252 is easily and elastically compressed when the through-bolt locking piece 252 passes through the flat element 10. The through-hole 258 is formed in the same way, and thus, as shown in Fig. Figure 14 illustrates that the lower part of the through-bolt locking piece 252 is easily compressed elastically when the through-bolt locking piece 252 passes through the flat element 10. The through-hole 258 is designed to allow forming tools to be easily released when the first element 251 is formed with their aid, thereby creating a concave section 268 in the hole 257, as described below.

[0077] The second element 260 has an insertion part 262 that can be inserted into the hole 257 and an insertion limiting piece 264 that prevents the insertion part 262 from being inserted too far into the hole 257.

[0078] The insertion part 262 is designed in a rod-like form. When the insertion part 262 is inserted into the hole 257, it prevents the engaged through-bolt 252 from being elastically compressed. Accordingly, the hole 257 and the insertion part 262 serve as a locking element that maintains the engaged state of the through-bolt 252.

[0079] The first element 251 and the second element 260 can preferably be locked together in a state in which the insertion depth of the insertion part 262 inserted into the hole 257 corresponds to a first depth. The first depth is a depth in which the locking state of the through-hole locking piece 252, which is locked to the flat element 10, can be maintained and in which the insertion part 262 reaches the bottom of the hole 257.

[0080] Furthermore, the first element 251 and the second element 260 can be particularly preferably locked together in a state in which the insertion depth of the insertion part 262 inserted into the hole 257 corresponds to a second depth. The second depth is less than the first depth. The second depth is a depth in which the insertion part 262 inserted into the hole 257 hardly prevents the elastic deformation of the through-hole locking piece 252 when the first element 251 passes through the flat element 10. For example, it is possible that a cable harness 220 has an embodiment in which the first element 251 of the fixing element 250 is attached to the fixing element mounting strip part 40 and the second element 260 is locked together with the first element 251 in the second depth position.In this case, the cable harness 220 is transported to a vehicle assembly plant, and after the through-bolt locking piece 252 has passed through the flat element 10 and been locked onto it, the second element 260 is further inserted into the first element 251. Then the second element 260 is locked to the first element 251 in the first depth position, thereby forming a cable harness fixing structure 201.

[0081] In the embodiment where the first element 251 and the second element 260 can be locked in the state in which the insertion depth of the insertion part 262 inserted into the hole 257 corresponds to the first and second depths, it is possible for a projection 267 to be formed on an inner circumferential surface of the hole 257 or an outer circumferential surface of the insertion part 262, and a concave section 268 to be formed on the other surface, with which the projection 267 is locked. Here, the concave section 268 is formed on the inner circumferential surface of the hole 257. The projection 267 is formed on the outer circumferential surface of the insertion part 262. Here, two concave sections 268a and 268b are formed at a distance from each other in one depth direction of the hole 257.In a state where the projection 267 is engaged with the concave section 268a formed in a position near the bottom of the hole 257, the insertion depth of the inserter 262 inserted into the hole 257 is the first depth. In a state where the projection 267 is engaged with the concave section 268b formed in a position near an entrance of the hole 257, the insertion depth of the inserter 262 inserted into the hole 257 is the second depth.

[0082] The locking force acting in the projection 267 and the concave section 268, which acts against the insertion direction of the second element 260 with respect to the first element 251, is greater than the locking force acting in the insertion direction. This means that the projection 267 and the concave section 268 also prevent the second element 269 from disengaging from the first element 251. The insertion limiting piece 264 limits the forward movement of the second element 260 once it has moved in the insertion direction with respect to the first element 251 to the first depth.

[0083] The insertion limiter 264, for example, is similar to the limiter 254 in a flat, plate-like shape (here a round, plate-like shape). The insertion limiter 264 is smaller than the limiter 254, but can be the same size or larger. The insertion limiter 264 can be engaged in a circumferential edge of the hole 257 when the insertion part 262 has been inserted to its first depth. This prevents further insertion of the insertion part 262 into the hole 257.

[0084] The shape of the inner circumferential surface of the hole 257 and the shape of the outer circumferential surface of the insertion part 262 are not subject to any special restrictions, and thus a round or a rectangular shape is also possible. The shape of the inner circumferential surface of the hole 257 and the shape of the outer circumferential surface of the insertion part 262 can be the same or different from each other.

[0085] The insertion part 262 can be exactly the same size as the hole 257 or larger. If the insertion part 262 is larger than the hole 257, a configuration is also possible in which the through-hole locking piece 252 is widened by inserting the insertion part 262. The insertion part 262 can be smaller than the hole 257, as long as the insertion part 262 can maintain the locking position of the through-hole locking piece 252.

[0086] Furthermore, it is possible that the inserter 262 and the hole 257 are designed such that their relative sizes differ in the longitudinal direction. In this case, for example, the inserter may be exactly the same size as the hole or smaller in a section corresponding to the insertion point and the hole between the position where the inserter is first inserted into the hole and the second depth position, and larger than the hole in a section corresponding to the section between the second depth and the first depth. In this case, the inserter is exactly the same size as the hole or smaller until the second depth is reached, and thus the force required for insertion may be reduced.The insertion part is larger than the hole between the positions of the second and first depths, thus allowing for a greater insertion force and preventing accidental insertion of the insertion part before it engages with the flat element 10. A portion of the insertion part that is larger than the hole allows the through-hole locking piece 252 to expand when the insertion part is engaged with the flat element 10.

[0087] The electrical conductors 22 are preferably fixed to the flat element 10 using the fixing element 250 described above in the following manner.

[0088] This means that the first element 251 of the fixing element 250 is attached to the fixing element mounting strip part 40. The wiring harness 220, with the first element 251 attached to the fixing element mounting strip part 40, is then transported to a vehicle assembly plant. The second element 260 is preferably transported in a state where it is locked to the first element 251 in the second depth position, as described above. However, the second element 260 can also be transported in a state where it is not locked to the first element 251, i.e., separately from the first element 251.

[0089] Next, in the vehicle assembly plant, the first element 251 in the wiring harness 220 is positioned so that it passes through the flat element 10 in a state where the wiring harness 220 is arranged along the flat element 10. As described above, the hole 257 and the through-hole 258 are formed, allowing the through-hole locking piece 252 to be easily compressed elastically. Thus, the first element 251 can pass through the flat element 10 without any problems.

[0090] After the first element 251 has passed through the flat element 10, the second element 260 is inserted into the flat element 251 and locked in the first depth position. According to the above embodiment, the fixing element 250, as in Fig. 15 illustrates, through the flat element 10 and is thus locked in place, and furthermore the locking state is maintained.

[0091] The embodiments described in the exemplary embodiments and their variations can be suitably combined, as long as they are not incompatible with each other.

[0092] Although the present invention has been described in detail, the foregoing description serves in all aspects for illustrative purposes and does not limit the invention. It is therefore understood that numerous modifications and variations can be devised without deviating from the scope of protection of the invention. REFERENCE MARK LIST 1 Cable harness fixing structure 10 flat elements 12 first shift 12a first main area 12b second main area 14 second shift 16 third shift 18 Opening 20 wiring harness 22 electrical line 24 connectors 30 cable fixing strip part 40 Fixing element mounting strip part 50 fixing element 52 Through-hole snap-in piece 52a Top section 52b lower part 54 boundary piece 56th pillar 80 Vehicle body 82 Roof section 90 Target element

Claims

[1] Cable harness fixing structure (1, 201) with: a flat element (10) comprising a first layer (12) and a second layer (14) and installed inside a vehicle (80), wherein the second layer is layered onto a first main surface (12a) of the first layer (12) and is softer than the first layer (12); and a cable harness (20) comprising an electrical conductor (22) arranged along the flat element (10) and a fixing element (50, 150, 250) attached to the electrical conductor (22) and fixing the electrical conductor (22) to the flat element (10), wherein the fixing element (50, 150, 250) has: a through-hole snap-fit ​​piece (52, 152, 252) in which a tip section (52a) is formed in such a way that it is able to pass through a part of the first layer (12) from a second main surface (12b) on a side of the first layer (12) opposite the first main surface (12a), which is not provided with a hole, and which has passed through the first layer (12) and snapped into place on the first main surface (12a); a limiting piece (54, 254) which is provided at such a distance to the through-bolt locking piece (52, 152, 252) that the through-bolt locking piece (52, 152, 252) is prevented from passing through a surface of the flat element (10); and a column (56, 256) that connects the through-bolt locking piece (52, 152, 252) and the limiting piece (54, 254). [2] Cable harness fixing structure (1, 201) according to claim 1, wherein the flat element (10) further comprises a third layer (16) which is layered on one side of the second layer (14) opposite the first layer (12) and is harder than the second layer (14). [3] Cable harness fixing structure (1, 201) according to claim 1 or 2, wherein the electrical conductor (22) is arranged in a flat state. [4] Cable harness fixing structure (1, 201) according to claim 3, wherein the cable harness further comprises a conductor fixing strip part (40, 140) which is designed as a strip and to which the electrical conductor (22) is fixed by sewing or welding. [5] Cable harness fixing structure (1, 201) according to one of claims 1 to 4, wherein the cable harness further comprises a fixing element attachment strip part, which is designed as a strip to which the fixing element (50, 150, 250) is attached and which is arranged between the limiting piece (54, 254) and the first layer (12). [6] Cable harness fixing structure (1, 201) according to one of claims 1 to 5, wherein the fixing element comprises (50, 150, 250): a first element (251) with the through-bolt locking piece (52, 152, 252) and the column (56, 256), wherein a hole (257) is formed in the column (56, 256), and and a second element (260) with an insertion part (262) that is inserted into the hole (257) to maintain a state in which the through-hole detent piece (52, 152, 252) is engaged with the flat element (10). [7] Cable harness fixing structure (1, 201) according to one of claims 1 to 5, wherein the flat element (10) and the fixing element (50, 150, 250) have the property that the through-hole locking piece (52, 152, 252) of the fixing element (50, 150, 250) can pass through a part in the flat element (10) that is not provided with a hole and can be locked to this part. [8] Wiring harness (20, 220), comprising: an electrical conductor (22) designed to be arranged along a flat element (10) having a first layer (12) and a second layer (14) and installed inside a vehicle (80), wherein the second layer (14) is layered on a first main surface (12a) of the first layer (12) and is softer than the first layer (12); and a fixing element (50, 150, 250) which is attached to the electrical conductor (22) to fix the electrical conductor (22) to the flat element (10), wherein the fixing element (50, 150, 250) has: a through-hole snap-in piece (52, 152, 252) in which a tip section (52a) is formed in such a way that it is able to pass through a part of the first layer (12) from a second main surface (12b) on a side of the first layer (12) opposite the first main surface (12a), in which no hole is formed, and to be snapped into place on the first main surface (12a) when passing through the first layer (12); a limiting piece (54, 254) which is provided at such a distance to the through-bolt locking piece (52, 152, 252) that the through-bolt locking piece (52, 152, 252) is prevented from passing through a surface of the flat element (10); and a column (56, 256) that connects the through-bolt locking piece (52, 152, 252) and the limiting piece (54, 254).

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