Sensor mounting bracket and connection cable routing structure

Abstract

Connection line laying structure, which includes the following: a connecting cable (15) which has an elliptical cross-section; a bracket (14) which has a mounting surface (21a) on which the connecting cable (15) is laid; and a guide (30) which is arranged at the laying surface (21a) to guide the connecting line (15) away from the laying surface (21a), wherein the guide (30) has a retaining wall (33) which has a first main surface (33a) opposite and spaced apart from the laying surface (21a) and a second main surface (33b) on a rear side of the first main surface (33a), the retaining wall (33) has a guide hole (34) extending through the retaining wall (33) from the first main surface (33a) to the second main surface (33b) to guide the connecting line (15) extending between the laying surface (21a) and the retaining wall (33) to the second main surface (33b), and has a slot (35) extending from one end of the retaining wall (33) to the guide hole (34), and the slot (35) has a width (Ds) that is specified as larger than a secondary axis diameter (Dx) of the connecting line (15) and smaller than a main axis diameter (Dy) of the connecting line (15).

Description

[0001] The present invention relates to a sensor mounting bracket that attaches a foreign object detection sensor to an electric door of a vehicle, and to a connection cable routing structure of the foreign object detection sensor. STATE OF THE ART

[0002] In the prior art, a conventional electric vehicle door may have a foreign object detection sensor that detects an accumulation of foreign objects during a closing operation (see, for example, JP 2016-031924A). The foreign object detection sensor is attached to the vehicle body by a bracket, and a connecting wire, which supplies power to the foreign object detection sensor, is routed along a mounting surface of the bracket. The connecting wire, routed along the mounting surface of the bracket, is, for example, bent at a right angle to a guide that is located at a predetermined position on the mounting surface and spaced apart from it. The connecting wire, extending from and spaced apart from the mounting surface, is connected to a wiring harness or the like and is electrically connected to an ECU.

[0003] Further sensor mounting brackets and connection cable routing structures according to the state of the art are shown in JP 2004 - 201 399 A and JP 2013 - 014 883 A.

[0004] At a bending position, such as the one described above, where the connecting cable is spaced away from the installation surface, the connecting cable is not held stably due to a bending reaction force. The inventors of the present invention have sought to find a solution to this problem and focused on the fact that the connecting cable wire has an elliptical cross-section. SUMMARY OF THE INVENTION

[0005] The object of the present invention is to provide a sensor mounting bracket and a connecting cable routing structure that stably holds a connecting cable at a bending position where a connecting cable is spaced away from a routing surface.

[0006] The object of the present invention is achieved by a sensor mounting bracket with the features of claim 1 and by a connecting cable routing structure with the features of claim 6.

[0007] Advantageous embodiments of the present invention are defined in the dependent claims.

[0008] According to an advantage of the present invention, a connecting cable routing structure comprises a connecting cable having an elliptical cross-section; a support having a routing surface on which the connecting cable is routed; and a guide arranged on the routing surface to guide the connecting cable away from the routing surface. The guide has a retaining wall having a first main surface opposite and spaced apart from the routing surface and a second main surface on a rear side of the first main surface. The retaining wall has a guide hole extending from the retaining wall from the first main surface to the second main surface to guide the connecting cable, which extends between the routing surface and the retaining wall to the second main surface, and a slot extending from one end of the retaining wall to the guide hole.The slot has a width that is set larger than a secondary axis diameter of the connecting cable and smaller than a primary axis diameter of the connecting cable. BRIEF DESCRIPTION OF THE DRAWINGS Fig. Figure 1 is a schematic view of a vehicle in which a foreign object detection sensor is installed according to an exemplary embodiment. Fig. 2A is a top view showing a section of a bracket in Fig. Figure 1 shows where a connecting cable is laid. Fig. 2B is a sectional view along a line 2b-2b in Fig. 2A. Fig. Figure 3 is an enlarged partial top view showing a connection line laying structure in Fig. 2A is shown. Fig. Figure 4 is a schematic diagram of a section of the connection line laying structure in Fig. 3. Fig. Figure 5 is a top view showing an enlarged structure in the vicinity of a guide of the bracket in Fig. 2A. Fig. 6 is a sectional view along a line 6-6 in Fig. 5. Fig. 7 is a sectional view along a line 7-7 in Fig. 5. Fig. 8A is a sectional view showing a coupling of the connecting cable with the guide in Fig. 6 represents. Fig. 8B is a sectional view showing a coupling of the connecting cable with the guide in Fig. 6 represents. Fig. Figure 9 is an enlarged top view showing a slot of a modification. Fig. Figure 10 is a sectional view showing a guide to the modification. FORMS FOR IMPLEMENTING THE INVENTION

[0009] An exemplary embodiment of a sensor mounting bracket and a connection cable routing structure is described below.

[0010] A motor-driven rear door (a motor-driven opening and closing mechanism) 11 of a vehicle 10, which is in Fig. Figure 1 shows two pressure-sensitive sensors (foreign object detection sensors) 13 to prevent the accumulation of foreign objects on a vehicle body 12 during a closing process. The pressure-sensitive sensors 13 are supported by two brackets 14, which are arranged along the ends of the rear door 11 in the vehicle width direction. The brackets 14 are each made of plastic and are injection-molded. The brackets 14 are elongated along the vehicle width direction ends of the rear door 11.

[0011] The pressure-sensitive sensors 13 each have two electrode wires (not shown) spaced apart from each other within a tubular insulator and arranged elongated along the vehicle width-direction ends of the rear door 11. An accumulation of foreign matter is detected based on a change in electrical resistance when the two electrode wires come into contact (short-circuit) with each other as a result of the foreign matter accumulation. One end of the pressure-sensitive sensor 13 is connected to a connecting line 15 (see Fig. 2) connected, which electrically connects the electrical wires to an ECU that controls a drive source (a motor) to open and close the rear door 11.

[0012] As in Fig. As shown in Figure 8A, the connecting cable 15 has two shielded wires 17 which are jointly sheathed by a shielding component 16 that is insulating and elastic. The connecting cable 15 has a cross-section orthogonal to its axis, which is an ellipse having a principal axis diameter Dy in the direction in which the two shielded wires 17 are arranged side by side.

[0013] As in Fig. 2A and Fig. As shown in Figure 2B, the bracket 14 has a first wall 21 with a mounting surface 21a on which the connecting cable 15 is routed, and a second wall 22 on which the pressure-sensitive sensor 13 is attached. The first wall 21 and the second wall 22 form a main section of the bracket 14. The first wall 21 and the second wall 22 are both flat and intersect at a corner section 23 where the angle is obtuse. The first wall 21 of the bracket 14 is attached to a vehicle body (the rear door 11).

[0014] As in Fig. As shown in Figure 2B, the surface closer to the first wall 21 is designated as an inner surface 22a, and the rear surface is designated as an outer surface 22b. The pressure-sensitive sensor 13 is attached to the outer surface 22b of the second wall 22 along the longitudinal direction of the bracket 14.

[0015] As in Fig. As shown in Figure 2A, the connecting line 15, which is connected to one end of the pressure-sensitive sensor 13, is guided from the outer surface 22b to the inner surface 22a through a slot 22c which is formed in the second wall 22 near a longitudinal end.

[0016] The connecting cable 15, which leads to the inner surface 22a of the second wall 22, is routed along the corner section 23 on the installation surface 21a, which is the inner surface (the surface near the second wall 22) of the first wall 21. The connecting cable 15 is routed between the second wall 22 and a clip pass hole (terminal pass hole) 21b and a screw insertion hole 21c, which extend through the first wall 21. The clip pass hole 21b serves as a hole into which a clip / terminal (not shown) is fitted, which temporarily attaches the bracket 14 to the rear door 11. The screw insertion hole 21c serves as a hole into which a screw (not shown) is inserted, which fastens the bracket 14 to the rear door 11.The connecting line 15, which is laid along the corner section 23, is bent at a substantially right angle in a direction extending away from the corner section 23 (the second wall 22) at a bending section 15a formed at a predetermined position, while remaining along the laying surface 21a.

[0017] The section of the connecting cable 15, which is routed from a section inserted through the slot 22c to the bending section 15a along the corner section 23, is held by a plurality of clamps 24 and a plurality of claws (holders) 25 which are integrally formed with the holder 14.

[0018] As in Fig. 3 and Fig. As shown in Figure 4, each terminal 24 has a retaining wall 24a projecting from the installation surface 21a of the first wall 21, and a retaining claw 24b projecting from the inner surface 22a of the second wall 22 and opposite the retaining wall 24a. A reinforcing rib 24c is formed on a rear surface of the retaining wall 24a. The connecting cable 15 is inserted in a compressed state between the retaining wall 24a and the retaining claw 24b and is clamped by the retaining wall 24a and the retaining claw 24b. Two claws 25, projecting from the inner surface 22a of the second wall 22, are formed between the terminals 24. The claws 25 each press the connecting cable 15 in a direction extending away from the inner surface 22a of the second wall 22.

[0019] The connecting cable 15 is designed in a meandering manner through the terminals 24 and the claws 25. This creates a reaction force on the terminals 24 and the claws 25, which acts on the connecting cable 15 to return it to a straight shape, thus preventing the connecting cable 15 from separating from the terminals 24 and the claws 25.

[0020] As in Fig. As shown in Figure 2A, the connecting line 15 extends from the bending section 15a to the vicinity of a central section of the laying area 21a in the lateral direction (vertical direction). Fig. 2A) and is guided by a guide 30, which is integrally formed with the laying surface 21a in the vicinity of the central section, in a direction extending away from the laying surface 21a. In other words, the connecting cable 15 is held by the guide 30 in a state in which it is bent at a substantially right angle in a direction extending away from the laying surface 21a (see Fig. 7) A sheathing component (not shown), such as a corrugated hose, is fitted onto an outward-facing section 15b (section spaced apart from the routing surface 21a) of the connecting cable 15, which is routed outward from the guide 30, and a connecting element (not shown) for connecting to the ECU is arranged at a distal end of the outward-facing section 15b. Two opposite sides of the guide 30 each have a clip attachment section 31 with a recess 31a in which a clip (not shown), which temporarily secures the bracket 14 to the rear door 11, is inserted.

[0021] As in Fig. 5, Fig. 6 and Fig. As shown in Figure 7, the guide 30 has two side walls 32 projecting from the laying surface 21a and a flat retaining wall 33 connecting the two side walls 32. The side walls 32 are flat and extend in the lateral direction (vertical direction in Fig. 5) the laying surface 21a. The retaining wall 33 has a first main surface 33a, which is spaced away from and opposite the laying surface 21a, and a second main surface 33b, which is the back side of the first main surface 33a (see Fig. 6) A guide hole 34 extends through the retaining wall 33 from the first main surface 33a to the second main surface 33b to guide the connecting line 15, which is laid between the installation surface 21a and the retaining wall 33, to the second main surface 33b. The guide hole 34 has a cross-section shaped as an ellipse, which has a slightly larger diameter than the cross-section of the connecting line 15.

[0022] Furthermore, the retaining wall 33 has a slot 35 that extends straight from an end of the retaining wall 33 located closer to the second wall 22 to the guide hole 34. That is, the slot 35 has an open end 35a that is open in the direction of the bending section 15a of the connecting cable 15 at the end of the retaining wall 33 located closer to the second wall 22. Furthermore, the side of the slot 35 (the closed end) opposite the open end 35a has the guide hole 34. The slot 35 extends through the retaining wall 33 in the vertical direction (direction opposite to the installation surface 21a) in the same way as the guide hole 34. The connecting cable 15 is routed through the slot 35 between the retaining wall 33 and the installation surface 21a.The direction in which the slot 35 extends (longitudinal direction) is parallel to the direction in which the side walls 32 extend and corresponds to a demolding direction X (see . Fig. 5), when the bracket 14 is injection molded.

[0023] As in Fig. As shown in Figure 5, the slot 35 has a first side surface 35b and a second side surface 35c, which are opposite each other in the width direction of the slot 35. The first side surface 35b and the second side surface 35c are parallel to each other. The first side surface 35b has two projections 36a and 36b, which project inwards in the width direction of the slot 35. The second side surface 35c has two projections 37a and 37b, which project inwards in the width direction of the slot 35. Of the two projections 36a and 36b and the two projections 37a and 37b, the projections 36a and 37a are arranged closer to the guide hole 34. The projections 36a, 36b, 37a and 37b are designed to have an essentially triangular shape from the perspective of the vertical direction of the guide 30.

[0024] The projection 36a of the first side surface 35b and the projection 37a of the second side surface 35c are adjacent to the guide hole 34. The projection 36a and the projection 37a are arranged opposite each other in the width direction of the slot 35. Furthermore, the projection 36b of the first side surface 35b and the projection 37b of the second side surface 35c are offset from each other in the direction in which the slot 35 extends (longitudinal direction). The projection 36b of the first side surface 35b is opposite the second side surface 35c.

[0025] Dimensions in the width direction of slot 35 are described below.

[0026] As in Fig. 5 and Fig. As shown in Figure 8A, the width of the slot 35, in particular a distance Ds between the first side surface 35b and the second side surface 35c of the slot 35, is larger than a minor axis diameter Dx of the connecting line 15 and smaller than the major axis diameter Dy of the connecting line 15. Furthermore, a distance Dp1 between the tip of the projection 36b of the first side surface 35b and the second side surface 35c is smaller than the minor axis diameter Dx of the connecting line 15. A distance Dp2 between the tips of the projections 36a and 37a, which are opposite each other in the width direction of the slot 35, is smaller than the minor axis diameter Dx of the connecting line 15. The major axis diameter Dm of the guide hole 34 is parallel to the width direction of the slot 35, and the major axis diameter Dm is larger than the width of the slot 35 (than the distance Ds) (see Figure 8A). Fig. 5).

[0027] As in Fig. 6 and Fig. As shown in Figure 8A, the first main surface 33a of the retaining wall 33 and the routing surface 21a, which is opposite the first main surface 33a, are designed such that a gap between them in the vicinity of the slot 35 is enlarged. A distance Dh between the first main surface 33a and the routing surface 21a in the enlarged gap is specified as larger than the secondary axis diameter Dx of the connecting line 15 and as smaller than the main axis diameter Dy of the connecting line 15. In the present embodiment, the distance Dh is specified as slightly smaller than the width of the slot 35 (than the distance Ds).

[0028] As in Fig. As shown in Figure 2A, the bracket 14 has a first guide wall 41 and a second guide wall 42, which project from the guide 30 towards the second side wall 22. The first guide wall 41 and the second guide wall 42 are integrally continuous with the routing surface 21a. The first guide wall 41 is located on an inside side of the bend of the bending section 15a of the connecting cable 15. The first guide wall 41 has a curved guide surface 41a, which extends on one side opposite the bending section 15a, essentially in accordance with the bending shape of the bending section 15a. A section of the first guide wall 41 is formed and located between the first main surface 33a of the retaining wall 33 and the routing surface 21a. Furthermore, the second guide wall 42 is located on an outside side of the bend of the bending section 15a of the connecting cable 15.The second guide wall 42 has a guide surface 42a which extends essentially in accordance with the bend of the bending section 15a on one side opposite the bending section 15a. The second guide wall 42 projects from the guide 30 towards the second wall 22 and extends to the inner surface 22a of the second wall 22. The bending section 15a of the connecting line 15 is located between the guide surface 41a of the first guide wall 41 and the guide surface 42a of the second guide wall 42.

[0029] The routing of the connecting cable 15 on the bracket 14 of the present embodiment is described below with regard to an activity.

[0030] The connecting cable 15, which is led outwards from the slot 22c of the second side wall 22, is fitted to the terminals 24 and the claws 25 and laid along the corner section 23 of the bracket 14. The connecting cable 15 is routed inwards in the width direction of the installation area 21a (inwards). Fig. 2A downwards) (with respect to the bending section 15a) bent at a substantially right angle along the guide surface 41a of the first guide wall 41 or the guide surface 42a of the second guide wall 42.

[0031] The connecting cable 15 is fitted into the slot 35 of the guide 30 of the second main surface 33b of the retaining wall 33 in order to arrange the connecting cable 15 between the retaining wall 33 and the laying surface 21a.

[0032] The direction of the secondary axis diameter Dx of the connecting line 15 corresponds to the width direction of the slot 35 (the lateral direction in Fig. 8) agree, as in Fig. Figure 8A shows how to insert the connecting cable 15 into the slot 35. In the slot 35, the distance Dp1 between the projection 36b and the second side surface 35c and the distance Dp2 between the projections 36a and 37a are slightly smaller than the secondary axis diameter Dx of the connecting cable 15. This allows the connecting cable 15 to be inserted into the slot 35 by gently pressing it into the slot 35.

[0033] The connecting cable 15 is then rotated so that the main axis diameter Dy of the connecting cable 15 extends in the width direction of the slot 35, as shown in Fig. Figure 8B shows the connecting line 15 being arranged between the retaining wall 33 and the installation surface 21a. The connecting line 15 is arranged in this direction between the retaining wall 33 and the installation surface 21a to prevent the connecting line 15 from separating from the slot 35 towards the second main surface 33b, thereby keeping the connecting line 15 between the retaining wall 33 and the installation surface 21a.

[0034] As in Fig. 2A and Fig. As shown in Figure 7, when the connecting cable 15 is arranged between the retaining wall 33 and the installation surface 21, the connecting cable 15 is located within the guide hole 34. In this case, the connecting cable 15 is bent below the guide hole 34 to change its orientation, so that it extends away from the installation surface 21a at the bending position. The connecting cable 15 is routed from the guide hole 34 to the second main surface 33b.

[0035] A sealing sponge (not shown), into which the connecting line 15 is inserted, can be attached to the second main surface 33b of the retaining wall 33 at a section where the connecting line 15 is guided outwards from the guide hole 34. This ensures that the connecting line 15 remains securely attached to the guide 30. Preferably, the area (attachment area) of the sealing sponge is the same as the area of ​​the second main surface 33b of the retaining wall 33.

[0036] The advantages of the present embodiment are described below. (1) The width-direction distance Ds of the slot 35 of the retaining wall 33 is specified as larger than the secondary axis diameter Dx of the connecting cable 15 and as smaller than the primary axis diameter Dy of the connecting cable 15. Thus, if the direction of the secondary axis diameter Dx of the connecting cable 15 coincides with the width direction of the slot 35, the connecting cable 15 is routed through the slot 35 between the retaining wall 33 and the installation surface 21a, and the connecting cable 15 is led outwards from the guide hole 34 in a direction extending away from the installation surface 21a.After the connecting cable 15 is laid through the slot 35 between the retaining wall 33 and the installation surface 21a, the connecting cable 35 is rotated so that its main axis diameter Dy extends in the width direction of the slot 35, thereby holding the connecting cable 15 between the retaining wall 33 and the installation surface 21a. This securely fastens the connecting cable 15 at the bending position where it is spaced away from the installation surface 21a. (2) The slot 35 has the first side surface 35b and the second side surface 35c, which are opposite each other in the width direction, the projections 36a and 36b, which project from the first side surface 35b towards the second side surface 35c, and the projection 37a, which projects from the second side surface 35c towards the first side surface 35b. The widths of the slot 35 at the sections where the projections 36a, 36b and 37a are arranged, i.e. the distances Dp1 and Dp2, are specified as smaller than the secondary axis diameter Dx of the connecting cable 15. This prevents the connecting cable 15 from separating from the slot 35 towards the second main surface 33b and keeps the connecting cable 15 stable between the retaining wall 33 and the installation surface 21a.If the area occupied by sections where the width is smaller than the minor axis diameter Dx of the connecting line 15 of the slot 35 in the longitudinal direction is too large, the connecting line 15 cannot be easily fitted into the slot 35. Therefore, the sections of the slot 35 whose widths are larger than the minor axis diameter Dx of the connecting line 15 are preferably set larger than or equal to half the length of the slot 35 in the longitudinal direction. (3) The guide 30 has the first guide wall 41 and the second guide wall 42, which guide the connecting cable 15 longitudinally to the open end 35a of the slot 35. Thus, the first guide wall 41 and the second guide wall 42 guide the connecting cable 15 into the slot 35 and enable easy insertion of the connecting cable 15 into the slot 35.

[0037] The above embodiment can be modified as described below.

[0038] In the foregoing embodiment, the design, such as the shape, number or arrangement of the projections 36a, 36b, 37a and 37b of the slot 35, can be modified in accordance with the design of the connecting line 15 or the like.

[0039] In one example, which is in Fig. As shown in Figure 9, there is one projection 37 arranged on the second side surface 35c of the slot 35. Furthermore, the projection 37 is positioned opposite a section between the projections 36a and 36b of the first side surface 35b. In this way, the tips of the projections 36a and 36b of the first side surface 35b and the tip of the projection 37 of the second side surface 35c are designed so that they do not face each other in the width direction of the slot 35. This facilitates easy insertion of the connecting cable 15 into the slot 35.

[0040] In the preceding embodiment, the distance Dh between the laying surface 21a and the first main surface 33a of the retaining wall 33 is set smaller than the main axis diameter Dy of the connecting line 15. Instead, as in Fig.As shown in Figure 10, for example, the distance Dh between the laying surface 21a and the first main surface 33a is set to be larger than the main axis diameter Dy of the connecting cable 15. This design allows the connecting cable 15 to rotate so that the main axis diameter Dy extends in the width direction of the slot 35 after the connecting cable 15 is positioned between the retaining wall 33 and the laying surface 21a through the slot 35.

[0041] If the distance Dh between the laying surface 21a and the first main surface 33a is specified as larger than the secondary axis diameter Dx of the connecting line 15, it is not absolutely necessary that the first main surface 33a of the retaining wall 33 and the laying surface 21a, which is opposite the first main surface 33a, are designed in such a way that the gap near the slot 35 increases.

[0042] The design of the guide 30 in the preceding embodiment can be modified in accordance with the arrangement direction of the connecting line 15. For example, the first guide wall 41 and / or the second guide wall 42 can be removed from the guide 30 in the preceding embodiment.

[0043] The design and orientation of the connecting cable 15 in the preceding embodiment can be modified to match the design of the pressure-sensitive sensor 13. For example, the connecting cable 15 can have three or more shielded wires 17.

[0044] The design, such as the shape of the holder 14 in the above embodiment, is described as an example and can be changed in accordance with the arrangement (design) of the pressure-sensitive sensor 13 and the connecting cable 15.

[0045] In the preceding embodiment, the pressure-sensitive sensor 13, which has two electrode wires, is described as an example of a foreign body detection sensor. However, a foreign body detection sensor that differs from the pressure-sensitive sensor can be used instead.

[0046] In the preceding embodiment, the present invention is applied to the connecting cable 15 of the pressure-sensitive sensor 13 in the rear door 11. Alternatively, the present invention can be applied to a connecting cable of a pressure-sensitive sensor in motor-driven sliding doors on the right and / or left side of a vehicle.

[0047] The above embodiment and the modifications can be combined.

Claims

[1] Connection line laying structure which includes the following: a connecting cable (15) which has an elliptical cross-section; a bracket (14) which has a mounting surface (21a) on which the connecting cable (15) is laid; and a guide (30) which is arranged at the laying surface (21a) to guide the connecting line (15) away from the laying surface (21a), wherein the guide (30) has a retaining wall (33) which has a first main surface (33a) opposite and spaced apart from the laying surface (21a) and a second main surface (33b) on a rear side of the first main surface (33a), the retaining wall (33) has a guide hole (34) extending through the retaining wall (33) from the first main surface (33a) to the second main surface (33b) to guide the connecting line (15) extending between the laying surface (21a) and the retaining wall (33) to the second main surface (33b), and has a slot (35) extending from one end of the retaining wall (33) to the guide hole (34), and the slot (35) has a width (Ds) that is specified as larger than a secondary axis diameter (Dx) of the connecting line (15) and smaller than a main axis diameter (Dy) of the connecting line (15). [2] Connection line laying structure according to claim 1, wherein the slot (35) has a projection (36a, 36b, 37a, 37b) which extends from a side surface of the slot (35) in a lateral direction, and the width (Ds) of the slot (35) from which the projection (36a, 36b, 37a, 37b) protrudes is specified as smaller than the secondary axis diameter (Dx) of the connecting line (15). [3] Connection cable routing structure according to claim 1 or 2, wherein the guide (30) has a guide wall (41, 42) which guides the connection cable (15) to an open end (35a) of the slot (35) in a longitudinal direction. [4] Connection line routing structure according to one of claims 1 to 3, wherein a distance (Dh) between the routing surface (21a) and the first main surface (33a) is specified as being larger than the main axis diameter (Dy) of the connection line (15). [5] Connection line routing structure according to claim 1, wherein the connection line (15) is connected to a foreign body detection sensor (13) which detects an accumulation of foreign bodies in a motor-driven opening and closing body (11) of a vehicle (10). [6] Sensor mounting bracket (14) supporting a foreign object detection sensor (13) that detects an accumulation of foreign objects in a motor-driven opening and closing body (11) of a vehicle (12), wherein a connecting line (15) having an elliptical cross-section and connected to the foreign object detection sensor (13) is routed along the sensor mounting bracket (14), wherein the sensor mounting bracket (14) comprises the following: a laying area (21a) on which the connecting line (15) is laid; and a guide (30) which is arranged at the laying surface (21a) to guide the connecting line (15) away from the laying surface (21a), wherein the guide (30) has a retaining wall (33) which has a first main surface (33a) opposite and spaced apart from the laying surface (21a) and a second main surface (33b) on a rear side of the first main surface (33a), the retaining wall (33) has a guide hole (34) extending through the retaining wall (33) from the first main surface (33a) to the second main surface (33b) to guide the connecting line (15) extending between the laying surface (21a) and the retaining wall (33) to the second main surface (33b), and has a slot (35) extending from one end of the retaining wall (33) to the guide hole (34), and the slot (35) has a width (Ds) that is specified as larger than a secondary axis diameter (Dx) of the connecting line (15) and smaller than a main axis diameter (Dy) of the connecting line (15). [7] Sensor mounting bracket (14) according to claim 6, wherein the slot (35) has a projection (36a, 36b, 37a, 37b) which extends from a side surface of the slot (35) in a lateral direction, and the width (Ds) of the slot (35) from which the projection (36a, 36b, 37a, 37b) protrudes is specified as smaller than the secondary axis diameter (Dx) of the connecting line (15). [8] Sensor mounting bracket (14) according to claim 6 or 7, wherein the guide (30) has a guide wall (41, 42) which guides the connecting line (15) to an open end (35a) of the slot (35) in a longitudinal direction. [9] Sensor mounting bracket (14) according to one of claims 6 to 8, wherein a distance (Dh) between the installation surface (21a) and the first main surface (33a) is specified as being larger than the main axis diameter (Dy) of the connecting line (15).

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