JP2008265723A - Seat sliding apparatus for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat sliding apparatus for a vehicle capable of discharging foreign matters entered to inside of a lower rail without inhibiting movement of an upper rail with respect to the lower rail. <P>SOLUTION: The seat sliding apparatus for the vehicle is provided with the lower rail 3 fixed to a vehicle floor and having a U-shaped cross section; the upper rail 4 fixed to a seat and supported to enable relative displacement with respect to the lower rail 3; and a block body 31 fixed to a rear end part of the lower rail 3 and including an inclined face 34 raised from a bottom face 12a of the lower rail 3 toward the rear end of the lower rail 3. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a vehicle seat slide device.

Conventionally, as a vehicular seat slide device, what was indicated, for example in patent documents 1 is known. This device has been proposed to be provided with a leaf spring at the rear of the lower rail in order to discharge foreign matter that has entered the rail. This leaf spring is supported by the lower rail in a manner to be urged upward, and is loaded with a foreign object that is pushed and moved as the upper rail moves rearward, and protrudes from the rear portion of the lower rail while lifting its rear end. To discharge foreign matter.
Japanese Patent Laid-Open No. 2005-8065

  By the way, this leaf spring can be tilted downward by being pushed by the upper rail so as not to hinder the backward movement of the upper rail. Therefore, for example, when a foreign object enters the lower side of the leaf spring, the tilting of the leaf spring is restricted, and the rearward movement of the upper rail is inhibited. Then, the upper rail cannot move to the end (end) of the original movable range.

  An object of the present invention is to provide a vehicle seat slide device capable of discharging foreign matter that has entered the lower rail without obstructing the movement of the upper rail relative to the lower rail.

  In order to solve the above-described problems, the invention according to claim 1 includes a lower rail having a U-shaped cross section fixed to a vehicle floor, an upper rail fixed to a seat and supported so as to be relatively movable with respect to the lower rail. And a block body fixed to the lower rail and having an inclined surface that is spaced from the lower rail toward the end of the lower rail.

  According to this configuration, the foreign matter that has entered the interior of the lower rail (inside the rail cross section) on the front side of the block body (on the side opposite to the lower rail) moves the upper rail toward the end of the lower rail. Along with this, it is lifted gradually in a manner guided by the inclined surface of the block body by being pushed and moved. Thereby, the said foreign material can be discharged | emitted to the edge part side of the said lower rail rather than the said block body. Further, since the block body does not need to be elastically deformed in order to allow the movement of the upper rail toward the end portion side of the lower rail, the upper rail can be moved even if foreign matter enters, for example, in the vicinity of the block body. Unless it interferes with the block body itself, the movement of the lower rail toward the end side is not hindered due to the foreign matter.

  According to a second aspect of the present invention, in the vehicle seat slide device according to the first aspect of the present invention, the vehicular seat slide device includes a stopper that is provided on the lower rail and restricts relative movement of the upper rail with respect to the lower rail, and the stopper includes the inclined surface. Further, it is arranged at the end side.

  According to this configuration, the block body is moved on the near side where the movement of the foreign matter is prevented by the interference with the stopper as the upper rail moves toward the end of the lower rail. It can be discharged at (inclined surface).

  According to a third aspect of the present invention, in the vehicle seat slide device according to the second aspect, the inclined surface is formed so as to protrude from the stopper in a direction perpendicular to a bottom surface of the lower rail, and the upper rail The gist of the present invention is that an escape portion is provided to avoid interference with the block body.

  According to this configuration, the foreign matter that has entered the interior of the lower rail is guided to the inclined surface of the block body, and is discharged in a state where it is lifted from the stopper in the direction perpendicular to the bottom surface of the lower rail. Therefore, the foreign matter can be discharged by the block body (inclined surface) in a manner that more reliably avoids interference with the stopper. At this time, since the upper rail is provided with a relief portion that avoids interference with the inclined surface, the inclined surface does not hinder the movement of the upper rail toward the end of the lower rail.

  According to a fourth aspect of the present invention, in the vehicle seat slide device according to any one of the first to third aspects, the outer shape of the block body is a U-shape of the lower rail while being fixed to the lower rail. The gist is that it has a shape that does not protrude outside the cross section.

  According to this configuration, the block body does not protrude outside the U-shaped cross section of the lower rail, that is, has a shape that fits inside the U-shaped cross section. Even if peripheral parts or the like are not intended to contact the lower rail, interference with the block body can be avoided, and the block body can be prevented from coming off the lower rail.

  According to a fifth aspect of the present invention, in the vehicle seat slide device according to any one of the second to fourth aspects, the stopper is a cut-and-raised portion formed by providing a cut portion in a bottom wall portion of the lower rail. The gist of the invention is that the block body is provided with a fitting portion that fits into the cut portion.

  According to this configuration, the block body can be easily fixed to the lower rail by fitting the fitting portion with a notch portion provided in accordance with the formation of the stopper (cut and raised). .

  According to a sixth aspect of the present invention, in the vehicle seat slide device according to the fifth aspect of the present invention, the protruding length of the fitting portion is such that the fitting portion is a U-shape of the lower rail in the fitted state with the notch portion. The gist is that it is set so as not to protrude to the outside of the cross section.

  According to the same configuration, the protrusion length of the fitting portion is set so that the fitting portion does not protrude outside the U-shaped cross section of the lower rail in the fitting state with the notch portion. For example, even when a peripheral part or the like unintentionally contacts the lower rail during an assembly process or a vehicle mounting, interference with the fitting portion can be avoided and the block body is prevented from coming off from the lower rail. be able to.

  According to a seventh aspect of the present invention, in the vehicle seat slide device according to the fifth or sixth aspect, the cut and raised portions are arranged in a pair on both sides in the width direction of the lower rail, and the block body is The gist is to be sandwiched between a pair of cut and raised parts.

According to this configuration, the block body can be held between the pair of cuts and raised, thereby suppressing the positional deviation in the width direction of the lower rail.
The invention according to claim 8 is the vehicle seat slide device according to claim 7, wherein the pair of cut-and-raised parts are reduced in the width direction as they extend in the vertical direction of the bottom surface of the lower rail. The block body has a side wall portion that is inclined along the cut and raised portions, and is summarized in that the side wall portion is sandwiched between the pair of cut and raised portions.

  According to the same configuration, the pair of cut and raised portions has an eight-shaped shape that is contracted in the width direction toward the vertical direction of the bottom surface of the lower rail, and the block body extends along the cut and raised portions. Are sandwiched between the pair of cut and raised portions. Therefore, the block body can be positioned and fixed simultaneously in the width direction of the lower rail and the vertical direction of the bottom surface.

  According to a ninth aspect of the present invention, in the vehicle seat slide device according to the eighth aspect, the fitting portion is adapted to be fitted to one end and the other end in the longitudinal direction of the lower rail in the cut portion. It consists of a first fitting part and a second fitting part formed on the bottom wall of the block body, and the second fitting part is cantilevered on the block body so as to be elastically deformable in the direction perpendicular to the bottom surface of the lower rail. The first fitting portion disposed on the side close to the cut and raised when the block body is sandwiched between the pair of cut and raised, and is inserted into the cut portion. The second fitting portion disposed on the side far from the cut and raised is pressed against the bottom surface of the lower rail to elastically deform the support piece, thereby causing the second fitting portion to be retracted in the vertical direction of the bottom surface. In the state, the bro The block is slid with respect to the lower rail by inserting the second fitting portion that has reached the cut portion by sliding the body in the longitudinal direction of the lower rail and elastically returning the support piece to the cut portion. The gist is that the body is fixed.

  According to this configuration, when the block body is assembled in the longitudinal direction of the lower rail so as to sandwich the block body between the pair of cut and raised parts, the first fitting portion disposed on the side close to the cut and raised parts The block body is inserted into the cut portion and retracted by pressing the second fitting portion disposed on the side far from the cut and raised against the bottom surface of the lower rail and elastically deforming the support piece. It does not float from the bottom of the lower rail. In this state, when the block body is slid in the longitudinal direction of the lower rail to insert the second fitting portion into the cut portion, the second fitting portion reaching the cut portion is It is inserted into the notch by elastic return. And the said 1st and 2nd fitting part is fitted to the said notch part by the longitudinal direction one side end and other side end of the said lower rail. At this time, the block body is positioned in the longitudinal direction of the lower rail. Therefore, the block body can be firmly fixed in cooperation with the pair of cut and raised portions that simultaneously position the block body in the width direction of the lower rail and the vertical direction of the bottom surface.

  According to a tenth aspect of the present invention, in the vehicle seat slide device according to the eighth or ninth aspect, each side wall portion is crushed by the cut and raised to suppress rattling of the block body with respect to the lower rail. The gist is that a thin flange is provided.

  According to this configuration, the block body can be firmly positioned and fixed because the thin flange suppresses rattling of the block body with respect to the lower rail.

  According to the first to tenth aspects of the present invention, it is possible to provide a vehicle seat slide device capable of discharging foreign matter that has entered the lower rail without hindering the movement of the upper rail with respect to the lower rail.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 is a side view schematically showing a vehicle seat 1 mounted on a vehicle such as an automobile. As shown in the figure, the lower rail 3 is fixed to the vehicle floor 2 in such a manner as to extend in the vehicle front-rear direction, and the upper rail 4 is attached to the lower rail 3 so as to be movable relative to the lower rail 3. ing.

  The lower rail 3 and the upper rail 4 are arranged in pairs in the width direction of the vehicle seat 1 (the direction orthogonal to the paper surface in FIG. 1), and are arranged on the left side toward the front of the vehicle here. Is shown. The upper rails 4 are fixed and supported by a seat 5 that forms a seating portion for the occupant. The relative movement of the lower rail 3 and the upper rail 4 is normally restricted by a lock member (not shown), and the restriction is released by applying an operating force to the lock member.

  Next, the vehicle seat slide device according to the present embodiment will be described with reference to FIGS. 2 and 3 are an enlarged side view and a plan view of the rear end portion of the vehicle seat slide device. 4 is a cross-sectional view taken along line AA in FIG. FIG. 5 is a plan view showing the rear end portion of the lower rail 3. As described above, the lower rail 3 and the upper rail 4 are arranged in pairs in the width direction of the vehicle seat 1. Therefore, the structure including the lower rail 3 and the upper rail 4 is provided in pairs in the width direction of the vehicle seat 1. In FIGS. 2 to 5, as a structure common to the structures disposed on each side, a structure disposed on the left side toward the front of the vehicle is shown as a representative.

  As shown in FIG. 4, the lower rail 3 includes a pair of side wall portions 11 erected from both sides in the width direction and a bottom wall portion 12 that connects the side wall portions 11 to each other. A folded wall portion 13 that is bent inward in the width direction and further folded back to the proximal end side of the sidewall portion 11 is continuously formed at the distal end (upper end) of each sidewall portion 11.

  On the other hand, the upper rail 4 has a pair of side wall portions 14 extending in the vertical direction between the folded wall portions 13 of the lower rail 3 and a lid wall portion 15 that connects the side wall portions 14 to each other. Then, at the front end (lower end) of each side wall portion 14, a folded wall portion 16 that is bent outward in the width direction and is folded back so as to be surrounded by the side wall portion 11 and the folded wall portion 13 is continuously formed. ing.

  That is, the lower rail 3 and the upper rail 4 have U-shaped rail cross sections whose opening sides face each other, and are prevented from coming off in the vertical direction mainly by engaging with the folded wall portions 13 and 16. The rail cross section formed by the lower rail 3 and the upper rail 4 is a so-called box shape having a rectangular shape.

  A rolling element (not shown) is mounted between each of the folded wall portions 16 and the side wall portion 11 opposed to the folded wall portion 16, and the upper rail 4 rolls between the lower rail 3 and the rolling body. In this manner, the lower rail 3 is supported so as to be slidable in the longitudinal direction (vehicle longitudinal direction). A resin cover member 17 that closes the rear opening is attached to the rear end of the upper rail 4. The cover member 17 is formed with an introduction port 17a as a groove-shaped relief portion that is recessed upward from the lower end and communicates rearward. Further, a regulating member 18 is provided at the rear end portion of the upper rail 4.

  Here, the bottom wall portion 12 at the rear end portion as the end portion of the lower rail 3 has a pair of U-shaped cut portions 21 that are open on opposite sides in the width direction in plan view (see FIG. 5). In addition to being formed, a cut-and-raised portion 22 is formed that is partitioned by an inner wall surface on the outer side in the width direction of each cut portion 21. The pair of cut-and-raised portions 22 are bent at a predetermined angle so as to exhibit a square shape that is contracted in the width direction toward the upper end (perpendicular to the bottom surface of the lower rail 3) (see FIG. 4).

  As shown in FIG. 2, these cut-and-raised portions 22 function as stoppers for restricting further rearward movement of the upper rail 4 by the contact of the regulating member 18 when the upper rail 4 is moved rearward. To do. In the present embodiment, when the upper rail 4 reaches the rear end of the lower rail 3, further rearward movement of the upper rail 4 is restricted. The lower rail 3 is fastened to the vehicle floor 2 by a bolt 23 penetrating the bottom wall portion 12 on the rear end side (front end side) further than the cut portion 21.

  A slide block 31 made of a resin material is fixed to the rear end of the lower rail 3. Hereinafter, the block body 31 will be described with reference to FIGS. 6 and 7 together. 6 and 7 are a perspective view and a longitudinal sectional view showing the block body 31, respectively. As shown in the figure, the block body 31 has a pair of fitting portions 32 as first fitting portions protruding from the bottom surface on both sides in the width direction on the front end side, and in the width direction on the rear end side. It has a pair of fitting part 33 as a 2nd fitting part projected from the bottom face on both sides. The distance between the end surfaces on the inner side in the width direction where both the fitting portions 32 face each other and the distance between the end surfaces on the inner side in the width direction where both the fitting portions 33 face each other are the distance between the inner wall surfaces on the inner side in the width direction of the both cut portions 21. Is set to the same distance L1. The distance between the front end face of the fitting portion 32 and the rear end face of the fitting portion 33 is set to a distance L2 equivalent to the distance between the front and rear inner wall surfaces of each cut portion 21. And the block body 31 installed on the bottom wall part 12 is positioned in the longitudinal direction and the width direction of the said lower rail 3 by each fitting part 32,33 fitting with the said notch part 21, and this lower rail 3 Fixed to.

  The block body 31 has a flat inclined surface 34 that rises from the bottom surface 12a (see FIG. 2) of the lower rail 3 (bottom wall portion 12) toward the rear end of the lower rail 3, and the inclined surface 34 It has a pair of side wall part 35 which inclines so that it may be shrunk | reduced as it raises. As shown in FIG. 4, the outer shape of the block body 31 projected in the rail longitudinal direction (the front-rear direction of the upper rail 4) is formed to match the outer shape of the introduction port 17 a so as not to interfere with the cover member 17. Yes. That is, in the relative movement of the upper rail 4 with respect to the lower rail 3, the block body 31 itself does not restrict the movement.

  Further, both side wall portions 35 of the block body 31 are inclined along the cut and raised portions 22, and are sandwiched between the pair of cut and raised portions 22 at the side wall portions 35. Accordingly, the block body 31 is simultaneously positioned and fixed in the width direction of the lower rail 3 and the vertical direction of the bottom surface.

  Each side wall portion 35 is formed with a thin flange 36 that protrudes outward in the width direction between the fitting portions 32 and 33, that is, at the position of the cut and raised portion 22. When the block body 31 is sandwiched between the pair of cut-and-raised portions 22 in the side wall portion 35, the thin flanges 36 on both sides are crushed by the opposed cut-and-raised portions 22 so that rattling with respect to the lower rail 3 is suppressed. ing.

  Further, the outer shape of the block body 31 is formed so as not to protrude outside the U-shaped cross section of the lower rail 3, that is, to fit inside the U-shaped cross section. In particular, the protruding length of the fitting portions 32 and 33 is such that the fitting portions 32 and 33 do not protrude outside the U-shaped cross section of the lower rail 3, that is, the fitting portions 32 and 33 are lower surfaces of the lower rail 3. Is set to fit.

  Each side wall 35 is formed with a rib 37 projecting outward in the width direction on the rear side of the thin flange 36. Each rib 37 contacts the cut and raised portion 22 when the fitting portions 32 and 33 are fitted to the cut portion 21 while the block body 31 is press-fitted between the cut and raised portions 22 from the rear side of the lower rail 3. The block body 31 is positioned in the front-rear direction of the lower rail 3 by contact.

  As shown in FIG. 6, the block body 31 is formed with a recess 38 that is recessed forward from the rear end, and the recess 38 is formed with a notch 39 formed in the bottom wall. Open downward at. As shown in FIG. 5, the notch 39 is formed in a U shape so that both the fitting portions 33 are cantilevered on the rear side. That is, the bottom wall of the block body 31 is formed with a flat plate-like support piece 39a that is partitioned by the notch 39 and is cantilevered on the rear side. A joint portion 33 is provided.

  Here, when the block body 31 is assembled in the longitudinal direction of the lower rail 3 so as to hold the block body 31 between the pair of cut and raised parts 22, as shown in FIGS. The fitting part 32 arranged on the side close to the raising part 22 is inserted into the notch part 21 and the fitting part 33 arranged on the rear side (the side far from the raising part 22) is pressed against the bottom surface of the lower rail 3. The support piece 39a is retracted (pushed up) by elastic deformation. Thereby, the block body 31 does not float on the rear side from the bottom surface of the lower rail 3 by the amount of the fitting portion 33, and does not hinder the assembly of the block body 31. In this state, when the block body 31 is slid forward to insert the fitting portion 33 into the cut portion 21, the fitting portion 33 that has reached the cut portion 21 has a base end of the cantilever support. That is, it is inserted into the cut portion 21 by elastic recovery centering on the base end of the support piece 39a. And the said fitting parts 32 and 33 are fitted in the front end and rear end of the said lower rail 3 in the said notch part 21, respectively.

  As a result, the block body 31 has the fitting portion 32 locked to the inner wall surface on the front side of the cut portion 21, and the fitting portion 33 locked to the inner wall surface on the rear side of the cut portion 21. It is positioned in the longitudinal direction of the lower rail 3. Further, the block body 31 is positioned in the width direction of the lower rail 3 by engaging the inner surface in the width direction of the fitting portions 32 and 33 with the inner surface in the width direction of the cut portions 21.

  At this time, the block body 31 is also positioned in the width direction of the lower rail 3 by the pair of cut and raised portions 22 sandwiching the block body 31. Accordingly, the block body 31 is positioned in the width direction of the lower rail 3 in cooperation with the pair of cut and raised portions 22 and the fitting portions 32 and 33. At the same time, the block body 31 is also positioned in the vertical direction of the bottom surface of the lower rail 3 by the pair of cut and raised portions 22 sandwiching the block body 31. As described above, the block body 31 is firmly positioned and fixed in cooperation with the pair of raised portions 22. In other words, the block body 31 moves the fitting portion 33 inserted into the cut portion 21 in the vertical direction of the bottom surface of the lower rail 3 to release the fitting, and further, the pair of cut and raised portions 22. Since it is necessary to slide the block body 31 in the longitudinal direction of the lower rail 3 in order to release the pinching caused by, the structure is extremely difficult to come off.

  In such a configuration, when the upper rail 4 moves rearward along the lower rail 3, the upper rail 4 does not interfere with the block body 31 in the above-described manner, and the regulating member 18 comes into contact with the cut and raised 22 last. Move to the end position.

  On the other hand, as shown in FIG. 2, the foreign matter S such as a lighter or a small object entering the inside of the lower rail 3 (inside the rail section) on the front side of the block body 31 (front side of the lower rail 3) As the upper rail 4 moves rearward, the upper rail 4 (the cover member 17) is pushed and moved, so that the upper rail 4 is gradually lifted in a manner guided by the inclined surface 34 of the block body 31. Thereby, the foreign matter S is discharged to the rear end side of the lower rail 3 from the block body 31 and finally discharged to the outside of the lower rail 3.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, the foreign matter S that has entered the lower rail 3 on the front side of the block body 31 (the front end side of the lower rail 3) moves the upper rail 4 to the rear end side of the lower rail 3. Accordingly, it is lifted gradually in a manner guided by the inclined surface 34 of the block body 31 by being pushed and moved. Thereby, the foreign matter S can be discharged to the rear end side of the lower rail 3 from the block body 31 and to the outside thereof. Further, since the block body 31 does not need to be elastically deformed in order to allow the upper rail 4 to move toward the rear end side of the lower rail 3, the upper rail 4 is, for example, in the vicinity of the block body 31. Even if a foreign object enters, it does not interfere with the block body 31 itself, and the movement to the rear end side of the lower rail 3 is not hindered due to the foreign object.

  (2) In this embodiment, since the block body 31 is partly disposed on the front end side of the lower rail 3 rather than the cut-and-raised portion 22 as a stopper, the block body 31 moves toward the rear end side of the lower rail 3. The foreign object S, which is pushed and moved by the movement of the upper rail 4, is located on the front end side of the lower rail 3 rather than the cut and raised 22, that is, on the near side where the movement of the foreign substance S is hindered by interference with the cut and raised 22. It can be discharged by the block body 31.

  (3) In this embodiment, the foreign matter S that has entered the lower rail 3 is discharged in a state where it is lifted above the cut and raised portion 22 by being guided by the inclined surface 34 of the block body 31. The Accordingly, the block body 31 can discharge the foreign matter S in a manner that more reliably avoids interference with the cut and raised portion 22 as a stopper. At this time, the upper rail 4 (cover member 17) is provided with an introduction port 17 a that avoids interference with the inclined surface 34, so that the inclined surface 34 moves the lower rail 3 toward the rear end side. The movement of the upper rail 4 is not hindered.

  (4) In the present embodiment, the block body 31 can be easily attached to the lower rail 3 by fitting the fitting portions 32 and 33 with the cut portion 21 provided in accordance with the formation of the cut and raised portion 22. Can be fixed to. For example, the block body 31 can be fixed by a simple operation without welding or crimping.

  (5) In the present embodiment, the block body 31 is sandwiched between the pair of cut-and-raised portions 22 in the side wall portion 35 having the thin flange 36, thereby suppressing displacement in the width direction of the lower rail 3. can do. In particular, the pair of cut-and-raised portions 22 has an octagonal shape that is contracted in the width direction toward the vertical direction (vertical direction) of the bottom surface of the lower rail 3, and the block body 31 includes The side wall portion 35 inclined along the raising portion 22 is sandwiched between the pair of cutting and raising portions 22. Accordingly, the block body 31 can be simultaneously positioned and fixed in the width direction of the lower rail 3 and the vertical direction of the bottom surface.

  (6) In the present embodiment, the block body 31 is positioned in the longitudinal direction and the width direction of the lower rail 3 by fitting the fitting portions 32 and 33 into the cut portion 21. Accordingly, the block body 31 can be firmly fixed in cooperation with the pair of cut and raised portions 22 that simultaneously position the block body 31 in the width direction of the lower rail 3 and the vertical direction of the bottom surface.

  (7) In this embodiment, the block body 31 can be fixed using the existing cut and raised 22 (stopper). In other words, since the additional parts required for discharging the foreign matter S are only the block body 31, an increase in the number of parts can be suppressed, and thus the cost can be reduced.

  (8) In this embodiment, the block body 31 does not protrude outside the U-shaped cross section of the lower rail 3 in a state of being fixed to the lower rail 3, that is, fits inside the U-shaped cross section. Thus, for example, even when a peripheral part or the like unintentionally comes into contact with the lower rail 3 during an assembly process or when mounted on a vehicle, interference with the block body 31 can be avoided. 3 can be prevented.

  (9) In this embodiment, the protruding lengths of the fitting portions 32 and 33 are such that the fitting portions 32 and 33 protrude outside the U-shaped cross section of the lower rail 3 in the fitting state with the notch portion 21. By avoiding the interference with the fitting parts 32 and 33 even if peripheral parts or the like contact the lower rail 3 unintentionally during the assembly process or when mounted on the vehicle, for example. It is possible to prevent the block body 31 from coming off the lower rail 3.

  (10) In this embodiment, since the shading of the block body 31 with respect to the lower rail 3 is suppressed by the thin flange 36, the block body 31 can be firmly positioned and fixed.

In addition, you may change the said embodiment as follows.
In the above embodiment, the cut and raised 22 is functioned as a stopper, but the bolt 23 may be functioned as a stopper by omitting this. In this case, the block body 31 is preferably arranged on the front end side of the lower rail 3 with respect to the bolt 23.

  In the embodiment, the block body 31 may be fixed to the front end portion of the lower rail 3 with the front-rear direction of the block body 31 reversed. In this case, the foreign matter S that has entered the lower rail 3 is pushed and moved along with the movement of the upper rail 4 toward the front end portion of the lower rail 3, and similarly to the front end side of the lower rail 3. , And in turn can be discharged to the outside.

  In the embodiment, the rail cross section formed by the lower rail 3 and the upper rail 4 is not limited to a box shape. For example, the rail cross section of the upper rail 4 may be a downward T-shape.

  In the above embodiment, the lower rail 3 and the upper rail 4 (vehicle seat slide device) may be arranged one by one with respect to the seat 5, or three or more each. It may be.

In the above-described embodiment, the movement direction of the seat accompanying the relative movement of the lower rail and the upper rail may be, for example, the vehicle width direction.
The support piece 39a does not necessarily have a structure that is cantilevered on the rear side of the block body 31 (opposite to the fitting portion 33). For example, the support piece 39a is cantilevered in the width direction of the block body 31. It may be a structure.

In the embodiment, the thin flange 38 may be omitted.
The block body 31 does not necessarily have to be clamped by the cut-and-raised portion 22 that functions as a stopper, and a dedicated cut-and-raised portion for sandwiching the block body 31 is provided on the lower rail 3, and the block body 31 is You may make it pinch.

The side view which shows the vehicle seat to which this invention is applied. The side view which shows one Embodiment of this invention. The top view which shows the same embodiment. Sectional drawing along the AA line of FIG. The top view which shows a lower rail. The perspective view which shows a block body. The longitudinal cross-sectional view which shows a block body. (A) (b) is a longitudinal cross-sectional view which shows the assembly | attachment aspect of a block body.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Vehicle seat, 2 ... Vehicle floor, 3 ... Lower rail, 4 ... Upper rail, 5 ... Seat, 12 ... Bottom wall part, 12a ... Bottom surface, 17 ... Cover member, 17a ... Inlet (escape part), 21 ... Notch , 22 ... Cut and raise (stopper), 31 ... Block body, 32 ... Fitting part (first fitting part), 33 ... Fitting part (second fitting part), 34 ... Inclined surface, 35 ... Side wall part 36 ... Thin flange, 39a ... Supporting piece.

Claims (10)

A U-shaped lower rail fixed to the vehicle floor;
An upper rail fixed to the seat and supported to be movable relative to the lower rail;
A vehicular seat slide device comprising: a block body fixed to the lower rail and having an inclined surface that is separated from the lower rail toward an end of the lower rail. The vehicle seat slide device according to claim 1,
A stopper provided on the lower rail and restricting relative movement of the upper rail with respect to the lower rail;
The vehicle seat slide device according to claim 1, wherein the stopper is disposed closer to the end than the inclined surface. The vehicle seat slide device according to claim 2,
The inclined surface is shaped so as to protrude from the stopper in a direction perpendicular to the bottom surface of the lower rail,
A vehicular seat slide device, wherein the upper rail is provided with an escape portion that avoids interference with the block body. In the vehicle seat slide device according to any one of claims 1 to 3,
The vehicle seat slide device according to claim 1, wherein an outer shape of the block body has a shape that does not protrude outside a U-shaped cross section of the lower rail in a state of being fixed to the lower rail. In the vehicle seat slide device according to any one of claims 2 to 4,
The stopper is a cut-and-raised portion formed by providing a cut portion in the bottom wall portion of the lower rail,
A vehicular seat slide device, wherein the block body is provided with a fitting portion that fits into the cut portion. The vehicle seat slide device according to claim 5,
The protrusion length of the fitting portion is set so that the fitting portion does not protrude outside the U-shaped cross section of the lower rail in the fitting state with the notch portion. apparatus. The vehicle seat slide device according to claim 5 or 6,
The cut and raised portions are arranged in a pair on both sides in the width direction of the lower rail,
The vehicle seat slide device, wherein the block body is sandwiched between the pair of cut and raised parts. The vehicle seat slide device according to claim 7,
The pair of cut-and-raised portions has an eight-shaped shape that is contracted in the width direction toward the vertical direction of the bottom surface of the lower rail,
The vehicular seat slide device, wherein the block body has a side wall portion inclined along the cut and raised portions, and is sandwiched between the pair of cut and raised portions at the side wall portions. The vehicle seat slide device according to claim 8,
The fitting portion includes a first fitting portion and a second fitting portion formed on the bottom wall of the block body so as to be fitted to one end and the other end in the longitudinal direction of the lower rail in the cut portion. ,
The second fitting portion protrudes from a support piece that is cantilevered and supported by the block body so as to be elastically deformable in a direction perpendicular to the bottom surface of the lower rail.
When the block body is sandwiched between the pair of cuts and raised, the first fitting part disposed on the side close to the cut and raised is inserted into the cut part and the first fitting part disposed on the side far from the cut and raised. The second fitting portion is retracted in a direction perpendicular to the bottom surface by pressing the two fitting portions against the bottom surface of the lower rail and elastically deforming the support piece. In this state, the block body is moved in the longitudinal direction of the lower rail. The block body is fixed to the lower rail by inserting the second fitting portion that has reached the cut portion by sliding in the direction into the cut portion by elastic return of the support piece. A vehicle seat slide device. The vehicle seat slide device according to claim 8 or 9,
Each of the side wall portions is provided with a thin flange that is crushed by the cut and raised to suppress rattling of the block body with respect to the lower rail.

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