JP2018114803A - Floor panel penetration cable seal structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure of a grommet blocking a through-hole of a floor panel and to shorten necessary dimensions in a fore-and-aft direction or a lateral direction of a vehicle in the grommet, without deteriorating wet resistance on the inner side of the vehicle, in a floor panel penetration cable seal structure.SOLUTION: A penetration cable seal structure is attached with a connector at one end, and includes a cable which penetrates a through-hole and whose one end side part is led out upward from a floor panel; and a grommet attached to an intermediate portion of the cable. The connector has a terminal holding portion of a block-shape which is long in one direction, and the through-hole is long in a lateral direction or a fore-and-aft direction of the vehicle. The grommet has a rubber seal member which is disposed on a lower side of the floor panel, and includes a cylinder portion of a cross-sectional shape which is long in the lateral direction or the fore-and-aft direction of the vehicle; and a metallic cover member which is disposed so as to retain the seal member from a lower side, and is long in the lateral direction or the fore-and-aft direction of the vehicle.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a through-panel cable sealing structure for a floor panel, which includes a cable having a connector attached to one end, penetrating through a through-hole formed in a floor panel of a vehicle, and having one end side portion led out above the floor panel. .

  In vehicles such as electric vehicles and hybrid vehicles, an electric motor for driving the vehicle is mounted. Moreover, a generator is mounted depending on the vehicle. Such a rotating electric machine, which is an electric motor or a generator, is disposed below the floor panel of the vehicle. On the other hand, the inverter connected to the rotating electrical machine with a cable may be disposed on the upper side of the floor panel. At this time, the rotating electrical machine and the inverter are connected by a cable penetrating the floor panel. Moreover, the cable connected to the rotating electrical machine may be connected to another cable connected to the inverter via a relay connector. Further, a grommet is attached to the cable, and the grommet prevents water from entering from the outside of the vehicle through the gap between the through hole of the floor panel and the cable. Thereby, the water resistance of the components inside the vehicle can be increased.

  As the above grommet, it is common to use a structure including a rubber circular portion and fit the circular portion into a circular through hole of the floor panel.

  In the structure described in Patent Document 1, the grommet is configured by insert-molding a metal plate into a grommet body made of an elastic material made of rubber or elastomer. Then, the stud bolt embedded in the floor panel is passed through the metal plate of the grommet and fastened with a nut, thereby fixing the grommet to the floor panel.

JP 2004-159461 A

  By the way, the size of the through hole of the floor panel is determined such that a connector attached to one end of the cable can be passed through the through hole and taken out to the upper side of the floor panel. This connector may have a horizontally long block-shaped terminal holding portion that is long in one direction. Accordingly, the circular through hole of the floor panel is enlarged so that the inner diameter becomes larger than the longitudinal dimension of the terminal holding portion. Thus, in the configuration in which the grommet including the rubber circular portion is fitted into the circular through hole of the floor panel, the grommet fitted into the through hole is both in the vehicle front-rear direction and the vehicle left-right direction. The dimension at becomes larger. This is a cause of increasing the longitudinal length and the lateral width of the vehicle.

  Moreover, in the structure described in patent document 1, the relationship between the front-back direction of a vehicle, the left-right direction, and a grommet is not prescribed | regulated. In addition, since the metal plate is insert-molded in the grommet body, the structure is complicated and the cost increases.

  An object of the present invention is to simplify the structure of the grommet that closes the through hole of the floor panel without reducing the water resistance inside the vehicle in the through-cable cable seal structure of the floor panel, and to the front and rear of the vehicle in the grommet. To reduce the required dimensions in the direction or left-right direction.

  The floor panel through-cable seal structure according to the present invention includes a cable having a connector attached to one end thereof, penetrating a through-hole formed in the floor panel of the vehicle, and one end side portion being led out above the floor panel. And a grommet that is attached to an intermediate portion of the cable and closes the through hole. The connector has a block-like terminal holding portion that is long in one direction, and the through hole has a size that allows the connector to be inserted from the lower side of the floor panel, and is provided in the vehicle left-right direction or the front-rear direction. It is a long hole. The grommet is disposed on the lower side of the floor panel, and a rubber seal member including a cylindrical portion whose cross-sectional shape about a plane orthogonal to the longitudinal direction of the cable is long in the left-right direction or the front-rear direction of the vehicle; A metal cover member that is arranged so as to hold down the seal member from the lower side and that is long in the left-right direction or the front-rear direction of the vehicle, with the upper end of the tube portion pressed against the lower side of the floor panel, Or the both ends of the front-back direction include the cover member couple | bonded with the said floor panel by a fastening member.

  According to the through-panel cable sealing structure of the floor panel according to the present invention, the structure of the grommet that closes the through-hole of the floor panel is simplified without reducing the water resistance inside the vehicle, and the front and rear of the vehicle in the grommet The required dimension in the direction or the left-right direction can be shortened.

It is a top view which shows the connection part of the one end side of the cable derived | led-out to the upper side of a floor panel in the vehicle containing the penetration cable sealing structure of the floor panel of embodiment. It is the figure which looked at the grommet attached to the cable from the lower side of the floor panel. It is the perspective view which took out the grommet from FIG. 2 and was seen from the lower surface side. It is the perspective view which took out the grommet from FIG. 2 and was seen from the upper surface side. It is a top view of a grommet. It is an AA cross section equivalent view of Drawing 3 showing the state where a grommet was attached to a floor panel. It is a perspective view of the sealing member which comprises a grommet. It is a perspective view of the cover member which comprises a grommet. It is a perspective view which shows the state just before attaching a grommet to the lower side of a floor panel. It is the figure seen from the upper direction of a floor panel in the comparative example of the penetration cable seal structure of a floor panel. It is a perspective view which shows the grommet of a comparative example. In another example of a grommet, it is the figure seen from the lower surface side. It is a BB cross-section equivalent view of Drawing 10 showing the state where another example of a grommet was attached to the floor panel. In a vehicle including another example of a grommet, it is a figure showing an example of the range which intercepts collision of washing water to a seal member by the 2nd cover member.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The shapes, materials, and numbers described below are illustrative examples, and can be changed as appropriate according to the specifications of the vehicle including the through cable seal structure of the floor panel. In the following description, identical elements are denoted by the same reference symbols in all drawings. In the description in the text, the symbols described before are used as necessary.

  Moreover, below, the structure by which the inverter above a floor panel and the rotary electric machine below a floor panel are connected by the cable which penetrated the floor panel is demonstrated. On the other hand, the embodiment is not limited to the rotating electrical machine and the inverter as long as the upper part and the lower part of the floor panel are connected by a cable.

  FIG. 1 is a top view illustrating a connecting portion on one end side of a cable 16 led out to the upper side of a floor panel 14 in a vehicle 10 including the floor panel through-cable seal structure 12 of the embodiment.

  The vehicle 10 is an electric vehicle, a hybrid vehicle, a hydrogen battery vehicle, or the like that includes a motor (not shown) that is a rotating electrical machine as a drive source of the vehicle 10. When the vehicle 10 is a hybrid vehicle, the vehicle 10 includes an engine as a drive source in addition to the motor. In the vehicle 10, an inverter 50 is disposed above the floor panel 14.

  The floor panel through-cable seal structure 12 according to the embodiment includes a cable 16 and a grommet 20 attached to an intermediate portion of the cable 16. The cable 16 connects the inverter 50 and a motor disposed on the lower side of the floor panel 14. The motor may be a motor generator having a generator function. Further, the cable 16 may have a configuration in which a plurality of cables are connected in series via terminals. In such a configuration, there are cases where the upper part and the lower part of the floor panel are connected by a cable in a state where a plurality of cables are connected to form the cable 16.

  The vehicle 10 may be an electric four-wheel drive vehicle in which front wheels (not shown) are driven by a front wheel motor and rear wheels (not shown) are driven by a rear wheel motor. At this time, on the upper side of the floor panel 14, a rear wheel inverter is arranged on the rear side of the vehicle, and the rear wheel motor and the rear wheel inverter arranged on the lower side of the floor panel 14 are connected by a cable. Also good.

  The motor is a three-phase AC motor driven by U-phase, V-phase, and W-phase AC currents. The cable 16 bundles U-phase, V-phase, and W-phase power lines 16a, 16b, and 16c and covers them with a tube 16d. The motor is not limited to the above three-phase AC motor, and various types of motors can be used. A connector 17 is attached to one end of the cable 16. One end portion of the cable 16 passes through a through hole 15 formed in the floor panel 14 and is led out from the floor panel 14.

  The connector 17 has a terminal holding portion 18, and is connected to the three-phase terminals of U phase, V phase, and W phase fixed to the terminal holding portion 18, and one end of the three-phase power lines 16 a, 16 b, 16 c of the cable 16. Are connected to each other. Thereby, the connector 17 is attached to one end of the cable 16. The three-phase terminals of the connector 17 are connected to the three-phase terminals of the inverter 50, respectively. The terminal holding portion 18 of the connector 17 is a rectangular block having a long cross section in one direction (vertical direction in FIG. 1) in a direction orthogonal to the longitudinal direction of the cable 16 and orthogonal to the one direction. The length in the other direction (left-right direction in FIG. 1) is small.

  The through hole 15 of the floor panel 14 is a hole that is long in the left-right direction, which is the width direction of the vehicle 10. In FIG. 1, the through-hole 15 is a rectangle that is long in the left-right direction, but may be an oval shape that is long in the left-right direction. On the other hand, the longitudinal dimension, which is the length in one direction of the terminal holding portion 18, is smaller than the lateral length La of the through hole 15 of the floor panel 14, but larger than the longitudinal length Lb. Further, the lateral dimension which is the other direction length of the terminal holding portion 18 is smaller than the longitudinal length Lb of the through hole 15 of the floor panel 14. Thereby, the through-hole 15 is a magnitude | size which can insert the connector 17 from the lower side of the floor panel 14 by making the longitudinal direction of the through-hole 15 and the terminal holding part 18 correspond.

  The grommet 20 is attached to an intermediate portion of the cable 16 and closes the through hole 15 of the floor panel 14. FIG. 2 is a view of the grommet 20 attached to the cable 16 as seen from the lower side of the floor panel 14. The grommet 20 blocks the through hole 15 of the floor panel 14 from below the floor panel 14. Since the through hole 15 is a hole that is long in the left-right direction as described above, the grommet 20 can be made long in the left-right direction as will be described later, thereby reducing the length in the front-rear direction of the grommet 20 as will be described later. it can.

  FIG. 3 is a perspective view of the grommet 20 taken from FIG. 2 and viewed from the lower surface side. 4 is a perspective view of the grommet 20 taken from FIG. 2 and viewed from the upper surface side, and FIG. 5 is a plan view of the grommet 20. FIG. 6 is a cross-sectional view corresponding to the AA cross section of FIG. 3 showing a state where the grommet 20 is attached to the floor panel 14. FIG. 7A is a perspective view of the seal member 21 constituting the grommet 20, and FIG. 7B is a perspective view of the cover member 31 constituting the grommet 20.

  The grommet 20 includes a rubber seal member 21 disposed on the lower side of the floor panel 14 and a metal cover member 31 such as iron disposed on the lower side of the seal member 21. As will be described later, in the grommet 20, the cover member 31 is coupled to the floor panel 14 by the fastening member 40 (FIG. 2) with the upper end of the seal member 21 pressed against the lower surface of the floor panel 14.

  Specifically, as shown in FIG. 7A, the seal member 21 includes a cable holding tube portion 22 and a plate portion connected to the outside of the axial intermediate portion of the cable holding tube portion 22 via an annular bulge portion 23. 24 and a lip portion 25, which are integrally formed. The cable holding cylinder part 22 is substantially cylindrical and the cable 16 (FIG. 2) is inserted inside. The cable holding cylinder portion 22 has an inner diameter in the axial middle portion that is substantially the same as or smaller than the outer diameter of the cable 16. As a result, the cable 16 is held in a state of being in close contact over the entire circumference at the intermediate portion in the axial direction of the cable holding cylinder portion 22.

  The plate portion 24 is substantially rectangular, and a circular recess 24a is formed at the center of the upper side surface. An annular bulging portion 23 is formed on the lower surface of the plate portion 24 on the opposite side of the concave portion 24 a so as to protrude on the lower side and on the outer side in the diameter direction of the cable holding cylinder portion 22. The annular bulging portion 23 protrudes on the lower side of the plate portion 24 so as to expand annularly outward in the diameter direction of the cable holding cylinder portion 22.

  The plate portion 24 has a substantially rectangular plate shape and is long in the left-right direction of the vehicle. As shown in FIG. 6, the lip portion 25 has a rectangular cylindrical shape that projects from the outer peripheral edge portion of the plate portion 24 so as to expand upward. Thereby, the lip portion 25 has a long cross-sectional shape in the left-right direction of the vehicle with respect to a plane orthogonal to the longitudinal direction of the cable 16. Further, the upper part of the cable holding cylinder part 22 protrudes above the upper end of the lip part 25, and the lower part of the cable holding cylinder part 22 protrudes below the plate part 24.

  As shown in FIG. 6, at the time of use, the tip of the lip portion 25 is pressed against the lower surface of the floor panel 14 of the vehicle.

  As shown in FIG. 3 and FIG. 7A, two substantially columnar column portions 28 protrude from both ends of the left and right direction on the lower surface of the plate portion 24 of the grommet 20. The column portion 28 is inserted into a small-diameter hole 33 (FIG. 7B) of the cover member 31 described later and used for positioning.

  As shown in FIG. 7B, the cover member 31 includes a substantially rectangular plate portion 32 that is long in the left-right direction of the vehicle. At the four corners of the plate portion 32, curved portions having a circular arc shape as chamfers are formed, but these curved portions are omitted, and two sides intersecting at the four corners are connected orthogonally. May be. In addition, a circular large-diameter hole 32 a having a size that allows the cable holding cylinder portion 22 to pass therethrough is formed in the center portion of the plate portion 32. Two small-diameter holes 33 are formed on both sides of the plate portion 32 in the left-right direction. The column portion 28 of the seal member 21 shown in FIG. 6 is inserted into each small-diameter hole 33 so that the seal member 21 is positioned with respect to the cover member 31. In addition, on the upper side surface of the plate portion 32, two oval pedestal portions 34 are formed outside the small-diameter hole 33 in the left-right direction at both ends in the left-right direction. Note that any number of the small-diameter holes 33 may be formed in the cover member 31 in an arbitrary arrangement, and the column portion 28 of the seal member 21 may be formed correspondingly. The upper end of the pedestal part 34 protrudes above the other part of the plate part 32, and the upper end part is planar. A hole 34 a is formed in the pedestal portion 34. Bolts 41, which will be described later, fixed to the floor panel 14 pass through the holes 34a, and nuts 42 are coupled to the bolts 41, whereby the pedestal portion 34 is fixed to the floor panel 14. The bolt 41 and the nut 42 constitute a fastening member 40. Further, the bolt 41 may be inserted into the hole 34 a from the lower side of the cover member 31, and a nut may be coupled to a portion of the bolt 41 protruding to the upper side of the floor panel 14. The pedestal portion 34 may have a truncated cone shape having a concentric shape when viewed from above. At this time, the circular shape of the upper end and the lower end of the pedestal portion 34 and the circular shape of the hole 34a may be concentric circles. Further, the pedestal portion 34 protrudes above the other portions of the plate portion 32 in a convex shape, but the floor panel 14 that is a counterpart member has a protrusion protruding downward, and the plate-like plate portion 32. Further, by allowing the lower end of the protrusion to abut, the shape may be simplified so as to further increase the productivity of the grommet. The base portion 34 is not formed on the plate portion 32, and both end portions of the plate portion 32 are cross-sectioned so that the upper end becomes a flat portion so as not to impair the function of the lip portion 25 having the cylindrical portion of the seal member 21. It may be bent into an L shape. Then, the flat portion located at the upper end of the bent portion is abutted against the lower surface of the floor panel 14, and a bolt is inserted into the hole formed in the flat portion, and the cover member is attached to the floor panel by the bolt and nut. May be fixed.

  As shown in FIGS. 4 to 6, the grommet 20 is formed by placing and combining the seal member 21 on the middle portion in the left-right direction on the upper side of the cover member 31. At this time, as shown in FIG. 3, the annular bulging portion 23 of the seal member 21 projects downward from the large-diameter hole 32 a of the cover member 31, and its outer peripheral portion engages with the lower surface of the cover member 31. In addition, each column portion 28 of the seal member 21 is inserted into the small-diameter hole 33 of the cover member 31 so that the seal member 21 can be positioned with respect to the cover member 31. As shown in FIG. 6, the diameter of the column portion 28 is large at the intermediate portion, and the column portion 28 can be prevented from coming off by pushing the column portion 28 into the small diameter hole 33.

  FIG. 8 is a perspective view showing a state immediately before the grommet 20 is attached to the lower side of the floor panel 14. After the grommet 20 is formed as described above, the grommet 20 is fixed to the lower side of the floor panel 14 as shown in FIG. At this time, the connector 17 (FIG. 1) is attached to one end of the cable 16, and the cable holding cylinder portion 22 of the seal member 21 is fitted to the middle portion of the cable 16. And the terminal holding | maintenance part 18 (FIG. 1) of the connector 17 is penetrated from the lower side of the floor panel 14 to the through-hole 15 formed in the floor panel 14 in the left-right direction. At this time, the connector 17 can be passed through the through-hole 15 by matching the longitudinal direction of the terminal holding portion 18 with the left-right direction of the through-hole 15.

  Moreover, the bolt 41 is being fixed to the both sides of the through-hole 15 in the left-right direction in the floor panel 14 in the state which protruded the screw part below. Then, the longitudinal direction of the cover member 31 is aligned with the lateral direction of the vehicle so that the threaded portion of the bolt 41 passes through the holes 34a at both ends in the lateral direction of the cover member 31, and the threaded portion protruding below the hole 34a. The nut 42 is coupled. Thereby, both ends of the cover member 31 are coupled and fixed to the floor panel 14. At this time, the cover member 31 is disposed so as to press the seal member 21 from below. Further, as shown in FIG. 6, the cover member 31 is in a state where the upper end of the lip portion 25 of the seal member 21 is pressed to the lower side of the floor panel 14. At this time, the upper end portion of the cable holding cylinder portion 22 of the seal member 21 is inserted through the through hole 15 of the floor panel 14 upward.

  According to the through cable seal structure 12 of the floor panel 14 described above, the periphery of the through hole 15 is covered with the lip portion 25 of the grommet 20, and each tip is pressed against the lower surface of the floor panel 14. Moreover, the structure of the grommet 20 can be simplified. Further, the grommet 20 does not depend on the shape of the through hole 15, and the shape of the portion of the grommet 20 that penetrates the through hole 15 only needs to be smaller than the through hole 15. Thereby, the length L1 (FIG. 2) of the front-back direction of the grommet 20 can be made small. Thereby, the structure of the grommet 20 can be simplified and the front-rear direction dimension of the vehicle in the grommet 20 can be shortened as necessary without reducing the water resistance inside the vehicle.

  FIG. 9A is a view seen from above the floor panel 14 in the comparative example of the through-cable seal structure of the floor panel 14. FIG. 9B is a perspective view showing a grommet 44 of a comparative example.

  9A and 9B show a comparative example of the grommet 44 in the substantially circular stepped cylindrical portion 45 made of rubber, in which the axial intermediate portion of the cylindrical portion 45 is closed by the circular plate portion 46, and the plate portion The cable holding cylinder portion 47 is connected to the center portion of the 46 so as to penetrate therethrough. The cable 16 is fitted and fixed inside the cable holding cylinder portion 47. On the other hand, a circular through hole 15 a is formed in the floor panel 14, the cable 16 passes through the through hole 15 a, and the through hole 15 a is closed with the grommet 20. At this time, the circular part of the outer periphery of the grommet 20 is fitted into the through hole 15a to close the through hole 15a. The dimension L2 of the grommet 44 in the front-rear direction of the vehicle is substantially the same as the dimension in the left-right direction, and is larger than L1 (FIG. 2).

  Specifically, the size of the through hole 15a of the floor panel 14 is such that the connector 17 (FIG. 1) attached to one end of the cable 16 can be passed through the through hole 15a and taken out above the floor panel 14. It is decided. The connector 17 has the horizontally long block-shaped terminal holding portion 18 that is long in one direction as described above. Accordingly, the circular through hole 15a of the floor panel 14 is enlarged over the entire circumference so that the inner diameter is larger than the longitudinal dimension of the terminal holding portion 18. Thereby, in the comparative example, the dimension L2 in the vehicle front-rear direction of the grommet 20 fitted into the through hole 15a is larger than L1 (FIG. 2). This causes an increase in the overall longitudinal length of the vehicle.

  In the case of the embodiment shown in FIG. 1 to FIG. 8, a long through hole 15 is formed in the left and right direction in the floor panel 14, and the through hole 15 is formed from the lower side of the floor panel 14 by a grommet 20 that is long in the left and right direction. It is blocked. Thereby, since it is not necessary to fit the rubber part of the grommet 20 in the through hole 15 of the floor panel 14, the front-rear direction dimension L1 (FIG. 2) of the vehicle in the grommet 20 can be shortened. Further, unlike the configuration described in Patent Document 1, in order to form the grommet 20, there is no need to perform complicated processing such as insert molding a metal plate on a grommet body made of an elastic material made of rubber or elastomer. Thereby, workability | operativity of the manufacture operation | work of the grommet 20 can be made high.

  FIG. 10 is a view of another example of the grommet 20 as viewed from the lower surface side. 11 is a cross-sectional view corresponding to the BB cross section of FIG. 10 showing a state in which the grommet 20 is attached to the floor panel 14.

  10 to 11, the grommet 20 has the second cover member 60 fixed to the middle portion in the left-right direction on the lower surface of the cover member 31 in the configurations of FIGS. 1 to 8. The second cover member 60 is made of a metal plate such as iron, and has two upper end plate portions 61 that are spaced apart in the left-right direction, and two inclined plate portions that are connected to both sides in the front-rear direction of each upper end plate portion 61. 62. The two upper end plate portions 61 are fixed side by side at the same position of the intermediate portion in the front-rear direction on the lower surface of the cover member 31. For example, in the cover member 31, the shaft portion 36 and the upper end plate portion 61 are fixed so that the shaft portion 36 protrudes downward, and the shaft portion 36 passes through a hole 61 a formed in the upper end plate portion 61. And are fixed by welding.

  In addition, the two inclined plate portions 62 are connected in an inclined state with respect to the upper end plate portion 61 so that the interval increases toward the lower side. As shown in FIG. 11, each inclined plate portion 62 is inclined at a preset predetermined angle θ with respect to the upper end plate portion 61 (FIG. 10). For example, the predetermined angle θ is 2 degrees or more.

  Returning to FIG. 10, drain holes 63 are formed at two positions separated in the left-right direction at the upper end of each inclined plate 62. In addition, a center hole 64 is formed in the center of the second cover member 60 so as to avoid interference with the cable holding cylinder portion 22 that protrudes below the seal member 21.

  In a state where the second cover member 60 is fixed to the lower side of the cover member 31, the inclined plate portion 62 of the second cover member 60 blocks the lower side of the cover member 31 and the intermediate portion in the left-right direction of the seal member 21. , Extends downward in the front-rear direction. Such a second cover member 60 is located in the vicinity of the through hole 15 of the floor panel 14 in the seal member 21 when the cleaning water is sprayed from the lower side of the vehicle at the time of high pressure cleaning or the like in use. Prevent spray of cleaning water on the part. For example, in a vehicle maintenance shop, a dealer, etc., cleaning may be performed by spraying cleaning water on the lower side of the floor panel 14 while the vehicle is lifted by a lifting device (not shown). In this case, in the configuration without the second cover member 60 as in the configurations of FIGS. 1 to 8, the cover member 31 may be distorted if the water pressure of the cleaning water is too high. And the sealing pressure of the lip | rip part 25 of the sealing member 21 and the floor panel 14 may fall partially. Thereby, there is room for improvement in terms of efficiently preventing water from entering the upper side of the floor panel 14 through the through hole 15 of the floor panel 14. According to the configuration of FIGS. 10 and 11, such a point can be improved.

  Moreover, since the 2nd cover member 60 has the inclination board part 62, the water which entered on the 2nd cover member 60 becomes easy to flow below. Further, the water that has entered the second cover member 60 is more easily discharged by the drain hole 63 of the second cover member 60. Thereby, the 2nd cover member 60 can be rust-prevented. The drain hole 63 is set at a position that does not hinder the spray preventing performance that prevents the cleaning water from being sprayed directly onto the seal member 21.

  FIG. 12 is a diagram illustrating an example of a range in which the second cover member 60 blocks the collision of the cleaning water with the seal member 21 in a vehicle including another example of the grommet 20. In FIG. 12, the illustration of the cover member 31 (FIGS. 10 and 11) is omitted. When determining the length of the second cover member 60 in the front-rear direction, the front end of the range in which cleaning water can be sprayed from the front side of the vehicle toward the upper end of the seal member 21 is the front side of the second cover member 60 (see FIG. 12). It is only necessary to be blocked by the inclined plate portion 62 on the left side). In the example of FIG. 12, a first straight line (shown in FIG. 12) that connects the rear end lower end C1 of the first frame 51 that is disposed below the floor panel 14 and extends in the left-right direction and the upper end C2 of the front end of the seal member 21. The front end of the sprayable range is defined by the two-dot chain line P).

  On the other hand, a second straight line (disposed on the lower side of the floor panel 14) connecting the lower end D1 of the front end portion of the second frame 52 that supports the suspension device (not shown) and the upper end D2 of the rear end portion of the seal member 21 ( The rear end of the sprayable range is defined by the two-dot chain line Q) in FIG. Thereby, in the example of FIG. 12, the sprayable range (a range indicated by an arrow α in FIG. 12) when viewed from one side in the left-right direction is defined by the first straight line P and the second straight line Q. And if the front-back direction length of the 2nd cover member 60 is determined so that the conditions which interrupt | block each of the 1st straight line P and the 2nd straight line Q may be determined, it can prevent that cleaning water directly hits the upper end of a sealing member. . Thereby, the water resistance of the grommet 20 can be improved. In addition, the second cover member 60 can be reduced in length in the front-rear direction as much as possible within the range satisfying the above conditions, and the rear end lower end C1 of the inclined plate portion 62 of the second cover member 60 and the first frame 51. This is effective in avoiding interference. Other configurations and operations are the same as those in FIGS. 1 to 8.

  In the above, the through-hole formed in the floor panel of the vehicle is a hole that is long in the left-right direction of the vehicle, and the grommet has a cylindrical section whose cross-sectional shape about a plane orthogonal to the longitudinal direction of the cable is long in the left-right direction of the vehicle. The case where the rubber-made sealing member containing was included was demonstrated. In the above description, the case where the grommet includes a cover member made of metal that is long in the left-right direction of the vehicle and includes both end portions in the left-right direction coupled to the floor panel by the fastening members has been described. On the other hand, the through hole may be a hole that is long in the front-rear direction of the vehicle. In addition, the sealing member included in the grommet may be made of rubber including a cylindrical portion whose cross-sectional shape with respect to a plane orthogonal to the longitudinal direction of the cable is long in the vehicle front-rear direction. Further, the cover member included in the grommet may be a metal cover member that is long in the front-rear direction of the vehicle, and both end portions in the front-rear direction may be coupled to the floor panel by fastening members. According to this configuration, it is possible to simplify the structure of the grommet that closes the through hole of the floor panel without reducing the water resistance inside the vehicle, and to shorten the required dimension in the left-right direction of the vehicle in the grommet. it can. In short, according to the present invention, the direction of the longitudinal direction of the through hole of the floor panel and the grommet may be changed according to the request in the case where there is a length to be shortened among the lengths in the longitudinal direction and the lateral direction of the vehicle.

  DESCRIPTION OF SYMBOLS 10 Vehicle, 12 Floor panel penetration cable seal structure, 14 Floor panel, 15, 15a Through hole, 16 Cable, 16a, 16b, 16c Power line, 16d Tube, 17 Connector, 18 Terminal holding part, 20 Grommet, 21 Seal member , 22 Cable holding cylinder part, 23 annular bulging part, 24 plate part, 24a concave part, 25 lip part, 28 column part, 31 cover member, 32 plate part, 32a large diameter hole, 33 small diameter hole, 34 pedestal part, 34a Hole, 36 shaft portion, 40 fastening member, 41 bolt, 42 nut, 44 grommet, 45 tube portion, 46 plate portion, 47 cable holding tube portion, 50 inverter, 51 first frame, 52 second frame, 60 second cover Member, 61 Upper end plate portion, 61a hole, 62 Inclined plate portion, 63 Drain hole, 64 Center hole.

Claims (1)

A connector is attached to one end, passes through a through hole formed in the floor panel of the vehicle, and a cable in which one end side portion is led out above the floor panel;
A grommet that is attached to an intermediate portion of the cable and closes the through hole;
The connector has a block-like terminal holding portion that is long in one direction,
The through hole has a size that allows the connector to be inserted from the lower side of the floor panel, and is long in the left-right direction or the front-rear direction of the vehicle.
The grommet is disposed on the lower side of the floor panel, and a rubber seal member including a cylindrical portion whose cross-sectional shape about a plane orthogonal to the longitudinal direction of the cable is long in the left-right direction or the front-rear direction of the vehicle;
A metal cover member that is arranged so as to hold down the seal member from the lower side and that is long in the left-right direction or the front-rear direction of the vehicle, with the upper end of the tube portion pressed against the lower side of the floor panel, A through-panel cable sealing structure for a floor panel, including a cover member having both ends in the direction or the front-rear direction coupled to the floor panel by fastening members.

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