JPH07323765A - Mounting structure for vehicle seat slide device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the assembling property and reduce the manufacturing cost. [Structure] For example, when the fitting boss 43 on the leg bracket 40 side is fitted into the fitting recess 13 on the cross member 12 side, the seat attached to the leg bracket 40 via the slide rail 20a is positioned as it is. And the mating boss 43 and mating recess 1 are formed in the subsequent process.
3 only needs to be prevented from coming off, and the mating boss 43
Also, since the fitting recess 13 can be formed by a simple drawing process even if the boss length is increased, the rigidity of the mounting portion and the assembling accuracy can be kept high, and The assemblability can be improved and the manufacturing cost can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body side rail fixed to a vehicle body floor via a support bracket, and a seat side rail which is fitted to the vehicle body side rail so as to be movable back and forth and supports a seat. The present invention relates to a mounting structure for a vehicle seat slide device including a slide rail having:

[0002]

2. Description of the Related Art As a conventional vehicle seat slide device mounting structure, for example, those shown in FIGS. 4 and 5 are disclosed in Japanese Utility Model Publication No. 61-155241 and Japanese Utility Model Publication No. 63-44838. Some of them are disclosed in the official gazettes. As shown in FIG. 4, a cross member 2 having a trapezoidal cross section is extended in the vehicle width direction on a vehicle body floor 1, and a support bracket 4 of a slide rail 3 is drawn into a box shape having an opening downward. The peripheral edge of the opening of is the mounting flange 5, and the mounting flange 5 is the cross member 2.
It is mounted and fixed on the front side surface 2a and the upper surface 2b of the. As shown in FIG. 5, the support bracket 6 formed by simple bending is placed and fixed on the upper surface 2b of the cross member 2.

In the one disclosed in Japanese Utility Model Laid-Open No. 61-155241, simple bending support brackets are placed on the front side surface, the upper surface and the rear side surface of the cross member and bolted to the upper surface of the cross member. An engaging hole is formed, and a hook-shaped engaging portion formed by cutting and bending the support bracket is inserted and engaged in the engaging hole. In the one disclosed in Japanese Utility Model Laid-Open No. 63-44838, a positioning hole is formed in a seat surface of a bracket for mounting a lower rail, while a positioning protrusion is formed in a vehicle body mounting bracket, and a positioning protrusion is formed in the positioning hole. Both brackets are bolted while engaging with each other.

[0004]

However, in such a conventional vehicle seat slide device mounting structure,
The one shown in FIG. 4 is excellent in rigidity, since the support bracket 4 is drawn into a box shape having an opening downward and the peripheral edge of the opening of the support bracket 4 is a mounting flange 5. Since the manufacturing process becomes complicated and the mounting flange 5 of the support bracket 4 is placed on the front side surface 2a and the top surface 2b of the cross member 2, it is generally difficult to obtain accuracy. It is necessary to improve the accuracy of the above, and the manufacturing cost increases as a whole. Also,
As shown in FIG. 6, the support bracket 4 is attached to the cross member 2
When the sheet is fastened to the front side surface 2a, the sheet swings around the fastened portion, and the assembling property of the sheet is not good. In the structure shown in FIG. 5, since the support bracket 6 formed by simple bending is placed and fixed on the upper surface 2b of the cross member 2, the manufacturing cost is low, but the rigidity tends to be insufficient as it is. , Some kind of reinforcement measures are needed.

In the one disclosed in Japanese Utility Model Laid-Open No. 61-155241, the hook-shaped locking portion of the support bracket is inserted and locked in the engaging hole, so that the positioning accuracy of the seat bracket is improved, but the engaging hole is increased. Also, the rigidity of the portion of the hook-shaped engaging portion formed by cutting and bending and the vicinity thereof becomes weak, and stress concentration easily occurs. The one disclosed in Japanese Utility Model Laid-Open No. 63-44838 also has a problem that stress concentration is likely to occur in the vicinity of the positioning hole. The present invention has been made in view of such conventional problems, and after maintaining the rigidity of the mounting portion and the assembling accuracy at a high level,
An object of the present invention is to provide a mounting structure for a vehicle seat slide device that can improve the assembling property and reduce the manufacturing cost.

[0006]

The gist of the present invention for achieving the above object is to: 1 A rail (20) on the vehicle body side fixed to a vehicle body floor (10) via a support bracket (40). And a slide rail (20a) having a seat-side rail (30) for supporting a seat, the slide rail (20a) being fitted to the vehicle-side rail (20) so as to be movable back and forth. In the mounting structure, a cross member (12) extending in the vehicle width direction is provided on the vehicle body floor (10), and the cross member (12) is provided.
A seat surface (12a) on which the support bracket (40) is placed from above is formed, and the support bracket (40) is
The fitting boss (43) having a substantially circular cross section and the support bracket (40) are attached to the seat surface (12) of the cross member (12).
The fitting boss (43) is fitted with the fitting boss (43) to be positioned with respect to each other when it is mounted on a), and forms one side with the fitting recess (13), and the fitting boss (12a) is formed on the seat surface (12a). 43) and the fitting recess (13) are formed, and the support bracket (40) is attached to the seat surface (12) of the cross member (12).
A mounting structure for a vehicle seat slide device, characterized in that the fitting boss (43) and the fitting recess (13) fitted together are mounted on a) and are prevented from coming off.

2 Rails (20) on the vehicle body side that are fixed to the vehicle body floor (10) via support brackets (40)
And a slide rail (20a) having a seat-side rail (30) for supporting a seat, the slide rail (20a) being fitted to the vehicle-side rail (20) so as to be movable back and forth. In the mounting structure, a cross member (12) extending in the vehicle width direction is provided on the vehicle body floor (10), and a seat surface (12a) on which the support bracket (40) is mounted is formed on the cross member (12). The support bracket (40) is formed with a fitting boss (43) having a substantially circular cross-section protruding downward, and the support bracket (40) of the cross member (12) is formed on the seat surface (12a). When the mounting boss (43) is mounted on the seating surface (12a), a fitting recess (13) is formed which is recessed downward so that the fitting boss (43) is fitted and positioned relative to each other, and the support bracket (40) The cross member (12 ), And the fitting boss (43) and the fitting recess (13) fitted together are mounted on the seating surface (12a) of FIG. The present invention resides in a mounting structure of a vehicle seat slide device, characterized in that it is prevented from coming off by a fastening bolt (46) so as to be immersed in.

[0008]

For example, the fitting boss (43) having a substantially circular cross section formed on the support bracket (40) is attached to the cross member (1).
Fitting recess (13) formed on the seat surface (12a) of 2)
When the sheet is attached to the support bracket (40) via the slide rail (20a), the sheet is positioned as it is, and the sheet is removed from the fitting boss (43) and the fitting recess (13). If stopped, the seat can be easily assembled to the vehicle body floor (10). The fitting boss (43) having a substantially circular cross section formed on the support bracket (40) and the seat surface (1) of the cross member (12).
The fitting recesses (13) formed in 2a) can be formed by a simple drawing process even if the boss length is increased, and the manufacturing cost does not increase.

When an excessive impact load is applied to the seat as in the case of a frontal collision, the support bracket (40) and the cross member (1) are passed through the slide rail (20a).
Although it is applied to the seat surface (12a) of 2), an excessive impact load can be received by the outer peripheral surface of the fitting boss (43) having a substantially circular cross section and the inner peripheral surface of the fitting recess (13). .

A cross member (12) extending in the vehicle width direction is fixed to the vehicle body floor (10), and the cross member (12) is provided.
A seat surface (12a) on which the support bracket (40) is placed from above is formed, and the support bracket (40) is
A fitting boss (43) having a substantially circular cross section protruding downward is formed, and the support bracket (4) is formed on the seat surface (12a).
0) is placed on the seating surface (12a) of the cross member (12), the fitting boss (43) is fitted to form a fitting recess (13) which is recessed downward and is positioned relative to each other. The support bracket (40) is formed and placed on the seat surface (12a) of the cross member (12), and the fitting boss (43) and the fitting recess (1) fitted together are formed.
3) and the bolt heads (47) are retained in the fitting recesses (13) by the fastening bolts (46) so as to prevent the fitting boss (43) and the fitting boss (43). Fit the boss (4) with the recess (13).
If the fastening bolts (46) are used to prevent the 3) and the fitting recess (13) from coming off, the bolt head (47) will be recessed in the fitting recess, and the lower clearance of the seat Since the hand inserted into the head does not hit the bolt head (47), injury is prevented, safety is improved, and a feeling of protrusion is eliminated, resulting in good appearance.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 to 3 show an embodiment of the present invention. As shown in FIG. 1, a cross member 12 having a trapezoidal cross section extends in the vehicle width direction on the vehicle body floor 10. The vehicle seat slide device includes a cross member 1 of a vehicle body floor 10.
2, which supports the seat so that the front and rear positions can be adjusted,
A slide rail 20a and a slide rail (not shown) having a similar structure are arranged in parallel on both sides of the seat.

The slide rail 20a is a rail 2 on the vehicle body side.
0 and the seat side rail 30 are slidably combined in the front and rear directions by bearings (not shown), and installation leg brackets 40, which are support brackets, are fixed to the front and rear sides of the vehicle body side rail 20.

The vehicle body side rail 20 has an upward groove cross section, and has a bottom surface portion 21, side walls 22 and 22, and a bottom surface portion 21.
Holding flanges 23, 23 parallel to the
4, 24, and one side wall 22 has a locking hole 2
5, 25 ... Are arranged in series.

The seat-side rail 30 is formed by combining symmetrical vertically standing component pieces 31 and 31. Each component piece 31 includes a support plate portion 32 and a horizontal plane portion 3 extending laterally from the support plate portion 32.
3, both ends of the horizontal plane portion 33 are bent upward to form side edge portions 34. Support plate 3 of component pieces 31, 31
2 and 32 are put together and the horizontal plane portion 33 is fitted to the vehicle body side rail 20. The support plate portion 32 of the seat side rail 30 is provided with a lock mechanism having an operation shaft and a latch member (not shown), and the tip of the latch member that swings around the operation shaft has the vehicle body side. Engaging projections that can be selectively engaged and disengaged are formed in the locking holes 25, 25 ... Consecutively provided on the side wall 22 of the rail 20. As shown in FIGS. 1 to 3, a seat surface 12 a for mounting the leg bracket 40 is formed on the upper surface portion of the cross member 12.
A fitting recess 13 having a circular cross section is formed in a. A bottom hole 15 is formed in the center of the bottom portion 14 which is a circular flat surface of the fitting recess 13, and the bottom portion 14 of the fitting recess 13 is formed.
A nut member 16 is welded to the lower surface side of the.

The leg bracket 40 is formed by forming a stepped portion at a central portion in the longitudinal direction on a strip-shaped plate, and a portion 41 which is raised one step with the stepped portion as a boundary is the bottom surface portion 21 of the vehicle body side rail 20. Is riveted, and the part 42 which is lowered one step is extended forward from the front end of the bottom part 21.
Alternatively, the bottom portion 21 extends rearward from the rear end portion. The part 42 of the leg bracket 40 that has been lowered one step
Corresponding to the fitting recess 13 of the cross member 12,
A fitting boss 43 having the same circular cross section is formed so as to fit relatively tightly into the fitting recess 13. Fitting recess 13
When the fitting boss 43 and the fitting boss 43 are fitted together, the bottom portion 44, which is a circular flat surface of the fitting boss 43 that overlaps the bottom portion 14 of the fitting recess 13, has a lower portion corresponding to the lower hole 15 at that time. A hole 45 is bored. A tightening bolt 46 that is screwed to the nut member 16 is inserted into the prepared hole 15 and the prepared hole 45. Boss length of fitting recess 13 and fitting boss 43
The depth of the recess is set to such an extent that the bolt head of the fastening bolt 46 is recessed.

Next, the operation will be described. Support bracket 40
Fitting boss 43 having a substantially circular cross section formed on the upper surface, and fitting recess 1 formed on the seat surface 12 a of the cross member 12.
No. 3 can be formed by a normal forming process, or even if the boss length is increased, it can be formed by a simple drawing process and the process is not complicated. The pair of slide rails 20a on both sides are previously attached to the seat. To attach the seat to the vehicle body floor 10, the leg brackets 40 on the slide rail 20a side are mounted.
The leg bracket 40 is placed on the seat surface 12a so that the seat bracket 12 and the seat surface 12a on the side of the cross member 12 correspond to each other. Next, if the seat is moved a little, the fitting boss 43 formed on the support bracket 40 and having a substantially circular cross section is formed on the seat surface 12a of the cross member 12 and the fitting recess 1 is formed.
3 will be fitted. The seat attached to the support bracket 40 via the slide rail 20a is
It will be positioned as it is without using a special jig.

Next, the fastening bolts 46 are inserted into the prepared holes 45 and 15 and screwed into the nut member 16, so that the fitting bosses 43 and the fitting recesses 13 are prevented from coming off, and the sheet is removed. It can be easily assembled to the vehicle body floor 10. At this time, the bolt head 47 of the tightening bolt 46 makes the fitting recess 1
When the operator or user inserts his or her hand into the lower clearance of the seat, the hand does not hit the bolt head 47, and the injury does not occur. Can be secured.

When an excessive impact load is applied to the seat as in the case of a frontal collision, the support bracket 40 and the seat surface 12 of the cross member 12 are inserted through the slide rail 20a.
It will come to a and. At this time, the fastening bolt 46 to which a shearing force is applied, and the fitting boss 43 having a substantially circular cross section.
The outer peripheral surface of the and the inner peripheral surface of the fitting recess 13 can sufficiently receive an excessive impact load. When the operation shaft (not shown) is rotated to disengage the latch member from the locking holes 25, 25 of the vehicle body side rail 20, the seat side rail 30 becomes movable in the front-rear direction with respect to the vehicle body side rail 20, and the entire seat. You can move to a desired position by moving.

When the desired position is determined, the latch member is returned and the latch member is engaged with one of the locking holes 25, 25 ... As a result, the position of the seat is fixed and fixed. In the above embodiment, the fitting recess 13 is formed on the cross member 12 side, and the fitting boss 43 is formed on the leg bracket 40 side. However, the reverse mode may be adopted. Further, as the fitting boss having a substantially circular cross section,
It also includes polygonal cross sections and elliptical cross sections. Further, although the leg bracket 40 is fixed to the seating surface 12a of the cross member 12 with the tightening bolts 46, it may be fixed with rivets.

[0020]

According to the mounting structure for a vehicle seat slide device of the present invention, for example, by fitting the fitting boss on the support bracket side into the fitting recess on the cross member side,
The seat attached to the support bracket via the slide rail remains positioned, and the mating boss and mating recess can be retained in a later process. Even if the boss length becomes high, both can be formed by a simple drawing process, so the rigidity of the attachment site and the assembling accuracy are kept high, and the assembling property is improved. However, the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a mounting structure for a vehicle seat slide device showing an embodiment of the present invention.

FIG. 2 is a perspective view of a mounting structure for a vehicle seat slide device showing an embodiment of the present invention.

3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a perspective view of a mounting structure for a vehicle seat slide device showing a conventional example.

FIG. 5 is a perspective view of a mounting structure for a vehicle seat slide device showing another conventional example.

FIG. 6 is a plan view of a mounting structure for a vehicle seat slide device showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 ... Vehicle body floor 12 ... Cross member 12a ... Seating surface 13 ... Fitting recess 20a ... Slide rail 20 ... Vehicle body side rail 21 ... Bottom part 24 ... Holding blunge 30 ... Seat side rail 33 ... Horizontal surface part 34 ... Side edge part 40 … Leg bracket (support bracket) 43… Fitting boss 46… Fastening bolt

Claims (2)

[Claims] 1. A vehicle body side rail fixed to a vehicle body floor via a support bracket, and a seat side rail which is fitted to the vehicle body side rail so as to be movable back and forth and supports a seat. In a mounting structure for a vehicle seat slide device including a slide rail, a cross member extending in a vehicle width direction is provided on a vehicle body floor, and a seating surface on which a support bracket is mounted from above is formed on the cross member. A mating boss with a substantially circular cross section,
When the support bracket is placed on the seat surface of the cross member, one of the fitting recesses that the fitting boss fits and is positioned relative to each other is formed, and the fitting boss is fitted to the seat surface. A vehicle seat characterized in that the other side of the fitting recess is formed, the support bracket is placed on the seat surface of the cross member, and the fitted fitting boss and fitting recess are prevented from coming off. Slide device mounting structure. 2. A vehicle body-side rail fixed to a vehicle body floor via a support bracket, and a seat-side rail that is fitted to the vehicle-body-side rail so as to be movable back and forth and supports a seat. In a mounting structure for a vehicle seat slide device including a slide rail, a cross member extending in a vehicle width direction is provided on a vehicle body floor, and a seating surface on which a support bracket is mounted from above is formed on the cross member. A fitting boss having a substantially circular cross section that protrudes downward, and the fitting boss is fitted to the seat surface when the support bracket is placed on the seat surface of the cross member. A fitting recess that is positioned to be recessed downward is formed, the support bracket is placed on the seat surface of the cross member, and the fitted fitting boss and the fitting recess are fitted together. Mounting structure of a vehicle seat slide device, characterized in that the retained by fastening bolts to the bolt head so that sinks into the fitting recess.