JP2006103530A - Seat position sensor arranging structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat position sensor arranging structure capable of preventing breakage due to the entry of foreign substance. <P>SOLUTION: In regard to a lower rail 17 attached to a floor side through a fastening member 50, and an upper rail 19 slidably provided on the lower rail 17 and attached to a lower portion of a seat, a detected apparatus 41 of a seat position sensor 100 and a detector 80 are respectively arranged on an inner surface 21a of the lower rail 17 and the upper rail 19. In that case, a spacer 54 is provided between the detected apparatus 41 arranged on the lower rail 17 and the fastening member 50. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a seat position sensor arrangement structure in which a seat position sensor is arranged on a seat rail.

The seat rail has a lower rail that is attached to the floor, an upper rail that is slidably provided on the lower rail and is attached to the lower portion of the seat, and the seat rail detects the sliding position of the upper rail with respect to the lower rail of the seat rail. There is a seat position sensor for detecting the slide position of the. With regard to the arrangement of such a seat position sensor, there is one in which a magnetic detection sensor as a detector of the seat position sensor is provided on the upper rail and a magnet as a detector of the seat position sensor is provided on the inner surface of the lower rail (for example, a patent Reference 1).
Japanese Patent Laid-Open No. 2004-210161

  By the way, the lower rail is usually attached to the floor side by a fastening member, but when a foreign object enters between the fastening member and the detector arranged on the lower rail side, the upper rail is slid with respect to the lower rail. For example, there is a possibility that foreign matter may be caught in the front-rear direction between the detector provided on the upper rail side and the fastening member, and the seat position sensor may be damaged. This problem may also occur when a detector for the seat position sensor is provided on the upper rail side and a detector is provided on the lower rail side.

  Accordingly, an object of the present invention is to provide a seat position sensor arrangement structure that can prevent damage due to the entry of foreign matter.

  In order to achieve the above object, the invention according to claim 1 is directed to a lower rail (for example, the embodiment) attached to the floor (for example, the floor 11 in the embodiment) via a fastening member (for example, the bracket mounting rivet 50 in the embodiment). And an upper rail (for example, the upper rail 19 in the embodiment) that is slidably provided on the lower rail and is attached to a lower portion of the seat (for example, the seat 10 in the embodiment), and an inner surface (for example, implementation) of the lower rail. One of the detector (for example, the magnetic detection sensor 80 in the embodiment) and the detector (for example, the detector 41 in the embodiment) of the sheet position sensor (for example, the sheet position sensor 100 in the embodiment) on the upper surface 21a) in the embodiment. Arrange A seat position sensor arrangement structure in which one of the detector and the detector to be detected is arranged on the upper rail, and one of the detector and the detector to be detected arranged on the lower rail. A spacer (for example, the spacer 54 in the embodiment) is provided between the fastening member and the fastening member.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the spacer is set to a height equal to or higher than the upper surface (for example, the upper surface 51a in the embodiment) of the fastening member.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the spacer is formed integrally with one of the detector and the detected device disposed on the lower rail. It is a feature.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein at least one of the front end portion and the rear end portion of the spacer is formed in a slope shape. .

  According to the first aspect of the present invention, the gap between the fastening member for attaching the lower rail to the floor and the detector of the seat position sensor and the detector to be detected disposed on the lower rail is filled. Since the spacer is provided, foreign matter that enters between the fastening member and either the detector on the lower rail side or the detector will be placed on the spacer, and when the upper rail is slid with respect to the lower rail Further, the detector and the detector to be detected provided on the upper rail side are favorably excluded without being sandwiched between the other member of the detector and the detector to be detected provided on the upper rail side and the fastening member. It will be. Therefore, it is possible to prevent damage due to the entry of foreign matter.

  According to the second aspect of the present invention, since the spacer is set to a height higher than the upper surface of the fastening member, when the upper rail is slid with respect to the lower rail, the foreign matter placed on the spacer is provided on the upper rail side. Therefore, it is possible to reliably prevent pinching between the other of the detected detector and the detected device and the fastening member. Therefore, it is possible to reliably prevent damage due to the entry of foreign matter.

  According to the invention which concerns on Claim 3, since a spacer is integrally formed with any one of the detector arrange | positioned by a lower rail, and a to-be-detected device, a number of parts can be reduced and an installation man-hour can be reduced.

  According to the invention of claim 4, since at least one of the front end portion and the rear end portion of the spacer is formed in a slope shape, the foreign matter is provided on the upper rail side when the upper rail is slid with respect to the lower rail. Therefore, the detector and the detector to be detected are favorably excluded by the other of the detector and the detector to be provided on the upper rail side without being sandwiched between the other of the detector and the detector to be detected and the spacer. Therefore, it is possible to reliably prevent damage due to the entry of foreign matter.

  A seat position sensor arrangement structure according to an embodiment of the present invention will be described below with reference to the drawings.

  As shown in FIG. 1, a seat 10 used in a vehicle such as an automobile is provided on a floor 11 in a vehicle compartment so as to be slidable back and forth via a seat rail 12 in a state of facing the front of the vehicle. In the following description, front and rear and right and left are front and rear, right and left of the seat 10, that is, front and rear and right and left of the vehicle.

  A pair of seat rails 12 are provided apart from each other on the left and right. Each seat rail 12 has a lower rail 17 attached to the floor 11 via front and rear brackets 15 and 16 in a posture extending in the front-rear direction of the vehicle. An upper rail 19 is provided on the lower rail 17 so as to be slidable in the extending direction and attached to a lower portion of the seat cushion 18 of the seat 10.

  As shown in FIG. 2, the lower rail 17 has a bottom plate portion 21 extending in the front-rear direction of the vehicle body with the thickness direction directed in the vertical direction, side plate portions 22 respectively rising from both left and right edge portions of the bottom plate portion 21, It has an upper plate part 23 that protrudes inward from the upper edge of each side plate part 22 in parallel with the bottom plate part 21, and an inner plate part 24 that protrudes downward from the inner edge part of each upper plate part 23. ing.

  The upper rail 19 has an upper plate portion 26 extending in the front-rear direction of the vehicle body with the thickness direction directed in the vertical direction, side plate portions 27 extending downward from both side edges of the upper plate portion 26 in the left-right direction, A lower plate portion 28 projecting outward from the lower end edge portion of the side plate portion 27 in parallel with the upper plate portion 26, and an outer plate portion 29 projecting upward from the outer end edge portion of each lower plate portion 28, respectively. The lower plate 17 is disposed on the lower rail 17 by disposing the outer plate portion 29 below the upper plate portion 23 of the lower rail 17 and the lower plate portion 28 below the inner plate portion 24 of the lower rail 17. It is slidably supported.

  As shown in FIGS. 3 and 4, a plurality of, specifically, three magnets 31 are attached to the upper surface 21 a of the bottom plate portion 21 of the lower rail 17, that is, the inner surface of the lower rail 17 via a magnet case 32. The magnet case 32 includes a cover portion 34 that is formed on the lower surface side, and a cover portion 34 that protrudes from the cover portion 34 to the front and rear sides. And a lower mounting plate portion 35. Here, the magnet 31 is bonded in a state of being housed in each housing recess 33.

  A mounting hole 36 is formed in each mounting plate portion 35 of the magnet case 32, and a mounting hole 37 is formed in the bottom plate portion 21 of the lower rail 17 so as to be spaced apart in the front-rear direction. The magnet case 32 is placed on the bottom plate portion 21 of the lower rail 17 with the magnet 31 facing down, and the lower end portion of the magnet mounting rivet 39 inserted from above into the mounting holes 36 and 37 is added. By tightening, the magnet 31 is fastened to the lower rail 17 via the magnet case 32. The head 40 of the magnet mounting rivet 39 has a disk shape in which the upper surface 40 a is parallel to the bottom plate portion 21, and the upper surface 34 a of the cover portion 34 of the magnet case 32 is also parallel to the bottom plate portion 21. . The height of the upper surface 40 a of the head 40 of the magnet mounting rivet 39 is made equal to the height of the upper surface 34 a of the highest cover portion 34 of the magnet case 32. Here, a plurality of magnets 31 and a magnet case 32 attached to the magnets 31 so as to cover them constitute a detector 41.

  The lower rail 17 is mounted on the floor 11 via a bracket 16 that is placed on the floor 11 in the bottom plate portion 21 and the rear portion of the bottom plate portion 21 is disposed on the lower side thereof. In addition, the lower rail 17 is similarly attached to the floor 11 via the bracket 15 shown in FIG.

  A plurality of, specifically, two attachment holes 42 are formed in the rear portion of the bottom plate portion 21 of the lower rail 17 so as to be spaced apart in the front-rear direction, and the same attachment holes 43 are also formed in the bracket 16. Then, an interposed plate 45 in which a similar mounting hole 44 is formed on the upper side of the bottom plate portion 21 of the lower rail 17 is overlapped, and an interposed plate 48 in which a similar mounting hole 47 is also formed on the lower side of the bottom plate portion 21. In addition, the bracket 16 is further superimposed on the lower side of the interposed plate 48. In this state, the bracket 16 on the floor 11 side is fastened to the lower rail 17 by caulking the lower end portion of the bracket mounting rivet (fastening member) 50 inserted through the mounting holes 44, 42, 47, 43 from above. The lower rail 17 is attached to the floor 11 via the bracket 16 fixed in this way. That is, the lower rail 17 is attached to the bracket 16 on the floor 11 side via the bracket attachment rivet 50. The head 51 of the bracket mounting rivet 50 has a disk shape in which the upper surface 51 a is parallel to the bottom plate 21.

  In the present embodiment, a spacer 54 is provided between the detector 41 disposed on the inner surface of the lower rail 17 and the bracket mounting rivet 50 in the front-rear direction.

  In order to attach the spacer 54, a locking hole 56 is formed in the bottom plate portion 21 of the lower rail 17 on the rear side of the detection target 41 in the vicinity of the detection target 41, and further on the rear side of the locking hole 56. A stop hole 57 is formed, and further, penetrates the interposed plate 45, the bottom plate portion 21, the interposed plate 48 and the bracket 16 at a position between the bracket mounting rivets 50 before and after the bottom plate portion 21 of the lower rail 17. Insertion holes 58 to 61 are formed in each.

  The spacer 54 is made of a synthetic resin having a substantially long plate shape, and a bent front end locking portion 65 protruding downward and protruding forward from the lower end is formed at the front end portion of the spacer 54. A claw-shaped intermediate locking portion 66 that protrudes downward and protrudes rearward from the lower end thereof and a guide piece portion 67 that protrudes downward on the front side of the intermediate locking portion 66 are formed at the intermediate portion in the direction. Further, a screw hole 68 is formed behind the intermediate locking portion 66. Then, the spacer 54 locks the front end locking portion 65 in the locking hole 56 so that the lower portion of the front locking portion 65 is under the bottom plate portion 21 of the lower rail 17, and engages the guide piece portion 67 and the intermediate locking portion 66. While the intermediate locking portion 66 is locked to the locking hole 57 while being fitted to the locking hole 57, the lower rail 17 is inserted into the insertion holes 58 to 61 from below and screwed into the screw holes 68. The bottom plate portion 21 is attached to the upper surface 21a, that is, the inner surface of the lower rail 17.

  Here, the spacer 54 has an inclined surface 71 which is inclined at the front end portion of the upper surface 54a so that the height is lower toward the front side, and has a slope shape, and the interposition plate 45 is formed on the lower surface side of the rear portion. A stepped portion 72 having a stepped shape is formed on the upper side. In addition, inclined surfaces 73 are formed on both left and right edge portions of the spacer 54 so as to be inclined so as to be located on the inner side in the left-right direction toward the upper side. Further, the spacer 54 is formed with two arrangement holes 74 that are vertically penetrated at the rear part thereof and arranged in the front and rear to dispose the head 51 of the bracket mounting rivet 50 inside. Here, as shown in FIGS. 4 and 5, the spacer 54 thus attached to the lower rail 17 has an upper surface 54 a parallel to the bottom plate portion 21 except for the inclined surface 71, and its height. However, the height is set to be equal to or higher than the height of the upper surface 51a of the head 51 of the bracket mounting rivet 50, specifically, the same height.

  As shown in FIGS. 2 and 4, a seat bracket 78 for mounting the seat 10 is placed on the upper plate portion 26 of the upper rail 19, and protrudes downward on the lower side of the upper plate portion 26. A bent plate-like bending member 82 having a convex portion 81 is disposed. The seat bracket 78 is fixed to the upper plate portion 26 with a plurality of rivets 83, and the bending member 82 is fixed to the upper plate portion 26 together with the seat bracket 78 with rivets 84 or the like.

  The seat bracket 78, the upper plate portion 26, and the bending member 82 are inserted with an insertion hole 88, an insertion hole 89 and an insertion hole 90 for inserting the detection portion 87 of the magnetic detection sensor (detector) 80, and the magnetic detection sensor. An attachment hole 92 for attaching 80, an attachment hole 93, and an attachment hole 94 are formed.

  That is, the magnetic detection sensor 80 is placed on the seat bracket 78 in a state where the detection portion 87 is inserted through the insertion holes 88 to 90 from above, and the attachment hole 95 formed in the magnetic detection sensor 80 and the attachment hole The magnetic detection sensor 80 is attached to the upper plate portion 26 of the upper rail 19 together with the seat bracket 78 and the bending member 82 by screwing the nut 98 into the bolt 97 inserted into the 92-94.

  The magnetism detection sensor 80 detects the magnet 31 when the magnet 31 is positioned below the detection unit 87. Accordingly, the lower rail 17 to which the magnet 31 is attached and the upper rail 19 to which the magnetism detection sensor 80 is attached, that is, the magnet 31 is detected. The positional relationship with the sheet 10 attached thereto is detected. That is, the magnetic position detection sensor 80 and the plurality of magnets 31 constitute a sheet position sensor 100 that can detect a plurality of slide positions of the sheet 10. The seat position sensor 100 detects the position of the seat 10 in order to control an unillustrated electric seat slide device that slides the seat 10 electrically.

  According to the seat position sensor arrangement structure of the present embodiment described above, the bracket mounting rivet 50 for attaching the lower rail 17 to the bracket 16 on the floor 11 side and the seat position sensor 100 provided on the lower rail 17 are covered. Since the spacer 54 is provided between the detector 41 and the gap in the front-rear direction, foreign matter may enter between the bracket mounting rivet 50 in the lower rail 17 and the detector 41. The foreign matter is placed on the spacer 54. Therefore, when the upper rail 19 is slid with respect to the lower rail 17, the foreign matter is not sandwiched between the magnetic detection sensor 80 provided on the upper rail 19 side and the head 51 of the bracket mounting rivet 50 in the front-rear direction. While being guided by the upper surface 54a of the spacer 54 and the upper surface 51a of the head 51 of the bracket mounting rivet 50, it is pushed by the magnetic detection sensor 80 on the upper rail 19 side and is well removed. Therefore, it is possible to prevent damage due to the entry of foreign matter.

  Moreover, when the spacer 54 is set to a height equal to or higher than the upper surface 51a of the head 51 of the bracket mounting rivet 50, when the upper rail 19 is slid with respect to the lower rail 17, foreign matters placed on the spacer 54 are allowed to move. It is possible to reliably prevent pinching between the magnetic detection sensor 80 provided on the side and the bracket mounting rivet 50. Therefore, it is possible to reliably prevent damage due to the entry of foreign matter.

  In addition, when the upper rail 19 is slid with respect to the lower rail 17, the magnetic detection sensor 80 provided on the upper rail 19 has a sloped front end portion of the spacer 54 that passes through the upper side of the upper rail 19. The magnetic detection sensor 80 can effectively eliminate the gap between the sensor 80 and the front end portion of the spacer 54. Therefore, it is possible to more reliably prevent damage due to the entry of foreign matter. Here, when the magnetic detection sensor 80 passes back and forth through the rear end portion of the spacer 54, the rear end portion of the spacer 54 may be sloped.

  In the above embodiment, the case where the spacer 54 is separate from the detector 41 disposed on the lower rail 17 has been described as an example. However, the spacer 54 includes the detector 41 disposed on the lower rail 17. You may form integrally. In this way, the number of parts can be reduced and the number of mounting steps can be reduced.

  In the above embodiment, the case where the magnetic detection sensor 80 which is the detector of the seat position sensor 100 is provided on the upper rail 19 and the detector 41 is provided on the lower rail 17 has been described as an example. The present invention can also be applied to the case where the magnetic detection sensor as a detector is provided on the lower rail 17 and the detector to be detected is provided on the upper rail 19.

It is a side view showing a sheet to which a sheet position sensor arrangement structure of one embodiment of the present invention is applied. It is a front sectional view showing a seat rail to which a seat position sensor arrangement structure of one embodiment of the present invention is applied. It is a disassembled perspective view which shows the structure by the side of the lower rail in the seat position sensor arrangement | positioning structure of one Embodiment of this invention. It is a sectional side view which shows the sheet | seat position sensor arrangement | positioning structure of one Embodiment of this invention. It is the perspective view which fractured | ruptured a part which shows the structure by the side of the lower rail in the seat position sensor arrangement | positioning structure of one Embodiment of this invention.

Explanation of symbols

10 Seat 11 Floor 17 Lower rail 19 Upper rail 21a Upper surface (inner surface of lower rail)
50 Rivet (fastening member) for bracket mounting
41 Detected object 51a Upper surface 54 Spacer 80 Magnetic detection sensor (detector)
100 Seat position sensor

Claims (4)

A lower rail that is attached to the floor via a fastening member; and an upper rail that is slidably attached to the lower rail and that is attached to the lower portion of the seat. The detector of the seat position sensor and the detector to be detected are provided on the inner surface of the lower rail. Any one of them, and a seat position sensor arrangement structure in which any one of the detector and the detector to be detected is arranged on the upper rail,
A seat position sensor arrangement structure, wherein a spacer is provided between any one of the detector and the detector to be detected arranged on the lower rail and the fastening member.   2. The seat position sensor arrangement structure according to claim 1, wherein the spacer is set at a height higher than an upper surface of the fastening member.   3. The seat position sensor arrangement structure according to claim 1, wherein the spacer is formed integrally with either the detector or the detector to be arranged on the lower rail. 4. The sheet position sensor arrangement structure according to claim 1, wherein at least one of a front end portion and a rear end portion of the spacer is formed in a slope shape. 5.

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