JP5747750B2 - Vehicle seat slide device - Google Patents

Description

  The present invention relates to a vehicle seat slide device.

  Conventionally, various types of vehicle seat slide devices have been proposed (for example, Patent Documents 1 to 3). These devices are configured such that the upper rail is movably connected to the lower rail, and includes foreign object pinching prevention means for preventing the foreign object from entering the rail.

  That is, in patent document 1, the inclination part provided in the bottom wall part of the lower rail is employ | adopted as a foreign material pinching prevention means. The inclined portion rises toward the rear bolt and reaches a height equivalent to the height of the head of the bolt. Foreign matter pushed by the upper rail is sandwiched between the upper rail and the bolt head. Is prevented.

  Moreover, in patent document 3, the block body provided in the bottom wall part of the lower rail is employ | adopted as a foreign material pinching prevention means. Similarly, the inclined surface of the block body prevents foreign matter pushed by the upper rail from being caught between the upper rail and the head of the bolt.

  On the other hand, in Patent Document 2, the movable range of the upper rail with respect to the lower rail is limited to a certain range by the stopper structure, and as long as the upper rail is disposed within the range, the protrusion protruding from the bottom wall portion of the lower rail is externally provided. On the other hand, it is configured not to be exposed. Thereby, even if a foreign substance enters the inside of the rail, the trapping can be automatically eliminated.

JP 2004-359072 A JP 2008-254599 A JP 2008-265723 A

  By the way, in Patent Documents 1 and 3, it is necessary to separately provide a stopper structure for limiting the movable range of the upper rail to the lower rail within a certain range. In this case, since the stopper structure and the foreign object pinching prevention means are individually assembled, for example, when a configuration is adopted that prevents the foreign object from entering the inside of the rail by their cooperation, their assembly errors The operating accuracy is inevitably lowered.

On the other hand, in Patent Document 2, it is presumed to be unrealistic due to large layout restrictions.
SUMMARY OF THE INVENTION An object of the present invention is to provide a vehicle capable of improving the operation accuracy when preventing foreign objects from entering the rail by cooperating with a stopper structure that limits the movable range of the upper rail to the lower rail within a certain range. An object of the present invention is to provide a seat slide device.

  In order to solve the above-mentioned problem, the invention according to claim 1 has a bottom wall portion and a pair of side wall portions erected on the upper side from both edges in the width direction of the bottom wall portion. A lower rail, an upper rail fixed to the seat and connected to the lower rail so as to be relatively movable on the upper side of the lower rail, a protrusion disposed at an end of the lower rail and protruding above the bottom wall, and A guide portion that is fixed to the lower rail and has an inclined surface that protrudes above the bottom wall portion on the opposite end side of the lower rail from the protrusion and rises from the bottom wall portion toward the end portion side of the lower rail. And can be engaged with the upper rail so as to protrude above the bottom wall portion and face in the width direction across the protrusion, and to lock the relative movement of the lower rail and the upper rail. And gist further comprising an engaging member having a pair of stopper portions such integrally.

  According to the same configuration, for example, the foreign matter that has entered the lower rail on the opposite end side of the engaging member is pushed and moved along with the movement of the upper rail toward the end side of the lower rail. The guide portion (engagement member) is gradually lifted in a manner guided by the inclined surface. Thereby, the foreign matter can get over the protrusion disposed on the end side of the guide portion, and the foreign matter can be prevented from being sandwiched between the upper rail and the protrusion. In particular, when the foreign matter guided to the guide portion is continuously guided to the stopper portion, the foreign matter is sandwiched between the upper rail and the projection portion by the cooperation of the guide portion and the stopper portion. This can be suppressed more reliably. At this time, since the guide part and the stopper part are integrated, the operation accuracy can be improved. In other words, the guide portion and the stopper portion cooperate with the foreign matter that is supposed to prevent pinching, and the guide portion and the stopper portion protrude upward from each other or between the guide portion and the stopper portion. When a separation distance or the like is set, it is possible to improve the accuracy of preventing the foreign object from being caught.

According to a second aspect of the present invention, in the vehicle seat slide device according to the first aspect, the projection is a head of a fastener that fastens the engaging member to the bottom wall. To do.
According to this configuration, it is possible to suppress the foreign matter from being sandwiched between the engagement member and the head portion of the fastener while simply coupling the engagement member to the bottom wall portion by fastening with the fastener. .

  In the present invention, a vehicle seat capable of improving the operation accuracy when preventing foreign objects from entering the rail by cooperating with a stopper structure that limits the movable range of the upper rail with respect to the lower rail within a certain range. A sliding device can be provided.

The side view which shows the vehicle seat to which this invention is applied. The cross-sectional view which shows one Embodiment of this invention. The side view which shows the same embodiment. (A) is a top view which shows the same embodiment, (b) is sectional drawing which followed the AA line of (a). The perspective view which shows an engaging member.

  An embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, a lower rail 3 is fixed to a vehicle floor 1 through a pair of front and rear foot brackets 2 in a manner extending in the front-rear direction, and an upper rail 4 is attached to the lower rail 3. It is mounted so that it can move relative to the front and rear.

  The lower rail 3 and the upper rail 4 are arranged in pairs in the width direction (the direction orthogonal to the paper surface in FIG. 1), and here, the lower rail 3 and the upper rail 4 are arranged on the left side toward the front. 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.

  As shown in FIG. 2, the lower rail 3 is made of a plate material, and includes a first side wall portion 11 as a pair of side wall portions erected from both sides in the width direction, and a bottom wall portion that connects between the lower ends of the first side wall portions 11. Twelve. A first folded wall portion 13 is continuously formed at the upper end of each first side wall portion 11 so as to protrude inward in the width direction and further folded back to the lower end side of the first side wall portion 11.

  On the other hand, the upper rail 4 is made of a plate material and extends between the first folded wall portions 13 of the lower rail 3 in the vertical direction, and a lid wall portion that connects between the upper ends of the second side wall portions 14. 15 The second folded wall 16 is continuously formed at the lower end of each second sidewall 14 so as to project outward in the width direction and be folded back so as to be surrounded by the first sidewall 11 and the first folded wall 13. Has been.

  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 first and second folded wall portions 13 and 16. Has been. 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. The lower rail 3 forms a space S in cooperation with the upper rail 4.

  A rolling element (not shown) is mounted between each second folded wall portion 16 and the first side wall portion 11 facing this, and the upper rail 4 rolls between the lower rail 3 and the rolling body. In such a manner, the lower rail 3 is supported so as to be slidable in the longitudinal direction (front-rear 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 a groove-like introduction port 17a that is recessed upward from the lower end and communicates rearward. Further, as shown in FIG. 3, a regulating member 18 is provided at the rear end portion of the upper rail 4.

  As shown in FIG. 4A, a pair of substantially square stoppers arranged in parallel in the width direction inside the first folded wall portion 13 on the bottom wall portion 12 at the rear end portion as the end portion of the lower rail 3. The insertion holes 21 are formed, and a substantially rectangular guide portion insertion hole 22 is formed on the front side (opposite end side) of the stopper insertion holes 21 at the center in the width direction. Further, the bottom wall portion 12 is formed with a substantially circular first pin insertion hole 23 sandwiched in the width direction at the front end portions of both stopper insertion holes 21, and on the rear side of the first pin insertion hole 23. A substantially circular second pin insertion hole 24 is formed.

  As shown in FIG. 4B, an engaging member 30 made of a plate material is fixed to the bottom wall portion 12 of the lower rail 3 below the first and second pin insertion holes 23 and 24. As shown in FIG. 5, the engagement member 30 has a long main body portion 31 extending in the front-rear direction, and protrudes upward from both ends in the width direction of the longitudinal intermediate portion of the main body portion 31. A pair of stopper portions 32 are provided. The upper end portions of both stopper portions 32 are bent so as to exhibit a C-shape that is contracted in the width direction toward the upper end. Further, the engaging member 30 has a guide portion 33 cut and raised from the main body portion 31 on the front side of both stopper portions 32. The guide portion 33 is cut and raised at an acute angle obliquely upward with the front end edge as a fulcrum, and has a flat inclined surface 33a that rises from the main body portion 31 toward the rear.

  Furthermore, the engaging member 30 has a substantially circular first pin insertion hole 34 and second pin insertion hole 35 that are arranged in parallel in the main body 31 in the front-rear direction. As shown in FIG. 4B, the engaging member 30 is in an arrangement state in which the first and second pin insertion holes 34 and 35 are concentric with the first and second pin insertion holes 23 and 24, respectively. The foot bracket 2 is sandwiched in the height direction with the bottom wall portion 12. Then, the engaging member 30 includes a first caulking pin 41 as a fastener that penetrates the first pin insertion holes 23 and 34 together with the foot bracket 2 and a second caulking pin 42 that similarly penetrates the second pin insertion holes 24 and 35. Both the foot brackets 2 are fastened to the bottom wall portion 12. Therefore, the engaging member 30 is fastened to the bottom wall portion 12 and the like at two locations by the first and second caulking pins 41 and 42, so that the rotation of the engaging member 30 is locked even when a biased external force is applied. Yes. Note that the upper head portion 41 a of the first caulking pin 41 and the upper head portion 42 a of the second caulking pin 42 as the protruding portions protrude above the bottom wall portion 12.

  The engaging member 30 fixed to the bottom wall portion 12 causes the upper end portions of both stopper portions 32 inserted from below into the stopper insertion holes 21 to protrude above the bottom wall portion 12 and guide portion insertion holes. The upper end portion of the guide portion 33 that is inserted into the lower portion 22 from the lower side is protruded above the bottom wall portion 12. Needless to say, the inclined surface 33 a of the guide portion 33 penetrating the guide portion insertion hole 22 rises from the bottom wall portion 12 toward the rear end of the lower rail 3.

  Further, as shown in FIG. 2, the outer shape obtained by projecting the guide portion 33 of the engaging member 30 in the rail longitudinal direction (the longitudinal direction of the upper rail 4) matches the outer shape of the introduction port 17 a so as not to interfere with the cover member 17. Are molded. This is to prevent the guide portion 33 itself from restricting the movement of the upper rail 4 relative to the lower rail 3. Moreover, as shown in FIG. 3, both the stopper parts 32 are arrange | positioned so that the movement locus | trajectory to the back of both the said control members 18 may be interrupted | blocked. That is, both stopper portions 32 function as stoppers that restrict further movement of the upper rail 4 further by the contact of the regulating member 18 when the upper rail 4 moves rearward. Therefore, the rearward movement range of the upper rail 4 with respect to the lower rail 3 is set to a range from the time when both the restricting members 18 are engaged with the both stopper portions 32 and the movement is locked.

Next, the operation of this embodiment will be described.
As shown in FIG. 3 and FIG. 4, the foreign matter F such as lighters and small articles that have entered the lower rail 3 on the front side (opposite end side) of the engaging member 30 is directed to the rear side (end side of the lower rail 3). As the upper rail 4 moves, the cover member 17 attached to the terminal is pushed and moved, so that the upper rail 4 is gradually lifted in a manner guided by the inclined surface 33a of the guide portion 33. As a result, the foreign matter F can get over the first and second caulking pins 41 and 42 disposed on the rear side of the guide portion 33, and the foreign matter F is brought into contact with the upper rail 4 (cover member 17) and the first caulking pin 41 and the like. It can suppress being pinched | interposed between. In particular, when the foreign matter F guided by the guide portion 33 is continuously guided to at least one stopper portion 32, the foreign matter F is moved into the upper rail 4 (cover member 17) by the cooperation of the guide portion 33 and the stopper portion 32. And the first caulking pin 41 and the like can be more reliably suppressed.

As described above in detail, according to the present embodiment, the following effects can be obtained.
(1) In the present embodiment, for example, the foreign matter F that has entered the lower rail 3 on the front side of the engaging member 30 is pushed and moved along with the movement of the upper rail 4 to the rear side of the lower rail 3. The portion 33 (engagement member 30) is gradually lifted in a manner guided by the inclined surface 33a. Accordingly, the foreign matter F can get over the head 41a and the like disposed on the rear side of the guide portion 33, and the foreign matter F is sandwiched between the upper rail 4 (cover member 17) and the head 41a and the like. Can be suppressed. In particular, when the foreign matter F guided by the guide portion 33 continues to be guided by the stopper portion 32, the foreign matter F is located between the upper rail 4 and the head portion 41 a by the cooperation of the guide portion 33 and the stopper portion 32. It can suppress more reliably that it is pinched by. At this time, since the guide part 33 and the stopper part 32 are integrated, the operation precision can be improved. In other words, the guide portion 33 and the stopper portion 32 are projected to the upper side of the guide portion 33 and the stopper portion 32 or the guide portion 33 and the stopper portion 32 in accordance with the assumed foreign matter F that is prevented from being caught by cooperation of the guide portion 33 and the stopper portion 32. When the separation distance is set, the prevention accuracy of the foreign object F can be improved.

  In addition, the engaging member 30 is integrally provided with a guide portion 33 for preventing the foreign object F from being sandwiched and a pair of stopper portions 32 that can be engaged with the upper rail 4. The increase in the number of parts and the increase in mass can be suppressed as compared with the case where it is configured, and as a result, the cost can be reduced. In addition, it is possible to flexibly respond to changes in the layout of the rail by changing the dimensions of the engaging member 30, or to flexibly respond to changes in the required strength of the stopper 32 by changing the thickness and material of the engaging member 30. can do.

  (2) In this embodiment, the engagement member 30 is simply coupled to the bottom wall portion 12 by fastening with the first caulking pin 41 or the like, but the foreign matter F is between the head 41a or the like of the first caulking pin 41 or the like. Can be prevented from being pinched.

  (3) In this embodiment, the foreign matter F can be discharged from the lower rail 3 by pushing the foreign matter F over the head 41 a and the like to the rear end of the lower rail 3 by the upper rail 4 that moves to the rear side.

In addition, you may change the said embodiment as follows.
-In the above-mentioned embodiment, it may be a guide part that is connected to the front end edge of the main body part 31 and folded back obliquely upward at an acute angle.

-In the said embodiment, the engaging member mounted and fixed to the upper surface of the bottom wall part 12 may be sufficient.
In the above-described embodiment, the head 41a and the like may be formed, for example, in the shape of Mt. Fuji so that the foreign matter F is less likely to be caught.

  -In the said embodiment, the engaging member fixed to the bottom wall part 12 by welding etc. may be sufficient. In this case, the protruding portion disposed on the rear side of the guide portion may be an appropriate functional member (or a part thereof).

  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 said embodiment, the moving direction of the sheet | seat accompanying the relative movement of a lower rail and an upper rail may be the width direction, for example.
In the above embodiment, the engaging member 30 may be fixed to the front end portion of the lower rail 3 by reversing the front-rear direction.

  DESCRIPTION OF SYMBOLS 1 ... Vehicle floor, 3 ... Lower rail, 4 ... Upper rail, 5 ... Seat, 11 ... 1st side wall part (side wall part), 12 ... Bottom wall part, 30 ... Engagement member, 32 ... Stopper part, 33 ... Guide part, 33a ... inclined surface, 41a ... head (projection).

Claims (2)

A lower rail fixed to the vehicle floor, and having a bottom wall portion and a pair of side wall portions erected on the upper side from both edges in the width direction of the bottom wall portion;
An upper rail fixed to a seat and connected to the upper side of the lower rail so as to be movable relative to the lower rail;
A protrusion that is disposed at an end of the lower rail and protrudes above the bottom wall;
A guide which is fixed to the lower rail and has an inclined surface which protrudes above the bottom wall portion on the opposite end side of the lower rail from the protrusion and rises from the bottom wall portion toward the end portion side of the lower rail. And a pair of stoppers that can be engaged with the upper rail so as to face the width direction across the protrusion and to lock the relative movement of the lower rail and the upper rail. A vehicle seat slide device characterized by comprising an engaging member. The vehicle seat slide device according to claim 1,
The vehicle seat slide device according to claim 1, wherein the protrusion is a head of a fastener that fastens the engaging member to the bottom wall.

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