JP2000264102A - Seat moving device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly make a rear part of a seat cushion smoothly get in between right and left moving rails by avoiding interaction of the rails at the turning of the seat cushion. SOLUTION: Side supporting bodies 20, 20 are placed on right and left side of a seat cushion B to connect thereto, and rail pedestal members 15, 16, 17 are connected to front-to-back moving rails 2, 2. Right-to-left moving rails 36, 36 are provided between the rail pedestal members 15, 16, 17 and the side supporting bodies 20, 20.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION It is a common practice to move a seat comprising a seat cushion and a seat back in the front-rear direction or the left-right direction of an automobile to change the arrangement of the seats and enhance the utility in the vehicle interior. The present invention belongs to a field technology for performing such seat movement.

[0002]

2. Description of the Related Art The arrangement of intersecting rails for moving a seat in the front-rear direction and the left-right direction is widely known, and one example thereof is disclosed in Japanese Patent Application Laid-Open No. Hei 10-181393. The technology disclosed herein relates to the "movability" of a seat, in which a front-rear moving rail is laid on the floor, a left-right moving rail is mounted on this rail, and a seat is placed thereon. Have been. Therefore, the seat is moved in the front-rear direction by the front-rear movement rail, and is moved in the left-right direction by the left-right movement rail, thereby changing the seat arrangement.

On the other hand, when performing the above-mentioned seat movement, it is necessary to give some technical considerations also to the "retractability" in which the seat cushion is moved after being raised.
As a prior art relating thereto, Japanese Patent Application Laid-Open No. 8-268131 is disclosed.
Publication. The technology disclosed herein discloses the upright behavior of a seat cushion in a forward-backward movement format.

[0004]

First, with regard to "mobility", it is necessary to improve the structure disclosed in Japanese Patent Application Laid-Open No. 10-181393. Since this structure is a rail structure that can only be moved back and forth and left and right, when another function is required, it is necessary to specially provide another part, which is disadvantageous in terms of the number of parts and the strength and rigidity. Regarding the “storability”, it is necessary to consider the relation with the rails in the left-right direction.
No. 31, the left and right side support members are disposed on a front-rear moving rail, and only the seat cushion is rotatably disposed therebetween. This prior publication does not disclose anything about the installability of the left and right moving rails.

[0005]

Means for Solving the Problems and Their Functions The present invention provides
With respect to the technology disclosed in the above-mentioned publication, it is an important object to satisfy the deficiencies, and it has been proposed with the aim of pursuing advantageous effects by a configuration unique to the present invention. In the following description, "before and after"
Means the same direction as the front-rear direction of the car, and "left and right" means the same direction as the left-right direction of the car. The invention according to claim 1 is a type in which a seat comprising a seat cushion and a seat back is movable in the front-rear direction and the left-right direction of the vehicle. The rail base member is formed integrally with the movable rail,
On the other hand, a pair of side supports are arranged on the left and right sides of the seat cushion, and the side supports are connected to the seat cushion, and a rail connecting portion is provided at a lower front portion and a lower rear portion of the side support. A pair of left and right moving rails is provided between the member and the rail connecting portion. Therefore, the base member for supporting the left-right moving rail is formed by the rail base member attached to the front-rear moving rail, and the left-right moving rail is mounted thereon. A side support is disposed on the left and right moving rails, and the side support itself functions as a support for the seat cushion. Therefore, the side supporter has another function, for example, a combined role such as rotation support of the seat cushion, while being combined on the left and right moving rails, and a single component can perform a plurality of functions, thus providing a structure. Advantageously.

According to a second aspect of the present invention, in the first aspect, a flexible connecting member is installed between the anchor fitting fixed to the rail base member and the seat belt buckle, and the seat is provided by the connecting member. , And the function of the seat belt is not impaired even if the seat cushion is displaced in the left-right direction due to the flexibility of the connecting member.

According to a third aspect of the present invention, in the first aspect, the pivot for raising the seat cushion provided between the side support and the seat frame is disposed forward of the pivot for tilting and rotating the seat back. When the front portion of the seat cushion is rotated upward and raised, the positions of the pivots and the left and right moving rails for the seat cushion standing are set so that the rear portion of the seat cushion enters between the front and rear left and right moving rails. It is characterized by having. The reason why the movement locus of the rear portion of the seat cushion does not interfere with the left-right moving rail is that the left-right moving rail is supported between the rail base member and the side support. That is, since the degree of freedom in selecting the dimensions and shapes of the rail base member and the side support is greatly expanded, it is possible to obtain the optimum position of the left and right moving rail from a structural aspect.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail with reference to the embodiments shown in FIGS. FIG. 1 is shown with a two-dot chain line for easy understanding. The seat A includes a seat cushion B and a seat back C. A pair of left and right moving rails 2, 2 are embedded in the floor portion 1 so as to be flush with the surface of the floor. The cross-sectional structure of the front-rear moving rail 2 is generally adopted, and one example is shown in FIG. To explain this, the fixed rail 3 has a substantially rectangular cross section and has inwardly directed flanges 4 and 4 formed on the upper portion thereof to form a passage gap 5. The movable rail 6 has an upper flange 7, a vertical plate 8, a lower flange 9, a vertical flange 10 and the like bent at substantially right angles as shown in the drawing.
The vertical plate 8 is welded back to back. The left and right rollers 11, 11 are integrated by a shaft 12, a bearing member 13 having a gutter-shaped section is welded to the lower flange 9, and the shaft 1 is inserted therein.
2, the rollers 11, 11 are supported. In addition, in order to prevent rattling in the vertical and horizontal directions,
A vibration isolator 14 made of a synthetic resin as shown in the figure is packed. The components shown in FIG. 6 are made of steel plate or iron except for the vibration isolating member 14.

A base bracket 15 is fixed to the upper surface of the upper flange 7 by welding. This bracket 15
It is formed as a long member by bending a steel plate as is clear from FIG. 9, and is basically U-shaped in cross section.
Inclined portions 15a and 15b are formed in front and rear. The base bracket 15 is disposed on each of the left and right front and rear moving rails 2 and 2, and height brackets 16 and 17 are provided at the front and rear positions.
Has been fixed. The height brackets 16 and 17 are prepared as pressed parts made of a steel plate, and fixed pieces 16a and 17b formed on the respective height brackets extend obliquely downward. Height brackets 16 and 17 are attached to base bracket 1
The fixing pieces 16a and 17b are placed on the front and rear portions of the bracket 5 so that the fixing pieces 16a and 17b are in close contact with the inclined portions 15a and 15b, and the brackets 15, 16 and 17 are integrated by bolts 18 and 19 (see FIG. 1). This integrated component constitutes the rail base member, and is integrated with the movable rail 6. The rail base member has a composite structure including the base bracket 15 and the height brackets 16 and 17 as described above. However, the rail base member may be configured as a single component as long as it satisfies the functions described below. , Can be freely deformed.

On the left and right sides of the seat cushion B, side supports 20, 20 are disposed, which are connected to the seat cushion B. The side support 20 is made as a pressed steel plate having a flange 21 around it and is connected to the seat cushion B by a pivot 22 welded inside. In the seat cushion B, a frame 23 made of a steel pipe having a square frame shape is installed, and a support plate 24 made of a steel plate is welded to the left and right central portions thereof. The support plate 24 has a flange 25 formed around the periphery, and a raised portion 26 facing upward at the center. Side support 2
0 and the support plate 24 face each other as shown in FIG. 3 and FIG. 4. An external thread is formed at the end of the pivot 22, and this is penetrated through the support plate 24 and connected with a nut 27. This allows the seat cushion B to rotate about the pivot 22.

In order to determine the position of the seat cushion B, a lock pin 28 is attached to the side support 20 so as to be able to advance and retreat.
9 and 30 are fitted. The state in which the seat cushion B is fitted into the through hole 30 in FIG. 4 determines the seating position of the seat cushion B. The guide pipe 31 of the lock pin 28 is welded to the inner surface of the side support 20, and the through holes 29,
A compression coil spring 32 is applied to the flange 33 to allow the lock pin 28 to enter the 30.

Rail connecting portions 34, 35 are provided on the lower front side and the lower rear side of both side supports 20, 20, respectively. The interval between the rail joints 34 and 35 is set to be the same as the interval between the height brackets 16 and 17, and a pair of front and rear left and right moving rails 36, 36 is provided between the height brackets 16, 17 and the rail joints 34, 35. It is installed in. The structure on the front side of this part will be described with reference to FIG. 5. Basically, the structure shown in FIG. 6 is turned upside down, and the movable rail fixed to the rail connecting portion 34 and the movable rail accommodated therein are provided. And a fixed rail 38 fixed to the height bracket 16 and rollers 39 installed between the two rails 37, 38. The main role of the side supports 20, 20 is to establish connectivity with the seat cushion B, and the rail coupling portions 34, 35
Therefore, various degrees of freedom can be given to the shapes of the side supports 20, 20 themselves.

A flexible connecting member is disposed between the anchor fitting fixed to the rail base member and the seat belt buckle. This structural portion will be described.
That is, the anchor fitting 41 is rotatably connected to the lateral side surface of the rear height bracket 17 using the bolt 40. The anchor 41 and the buckle 42 are connected by a flexible connecting member 43. The illustrated connection member 43 is a webbing, but this can be replaced with a steel wire.

Reference numeral 44 denotes a reclining mechanism, the lower part of which is connected to the rear upper part of the side supports 20, 20, and the upper part of which is connected to the frame 45 of the seat back C. A pivot (not shown) for tilting and rotating the seat back C is provided by the reclining mechanism 44.
Has been granted by Reference numeral 46 in FIG. 9 denotes a pressing band that holds the connecting member 43.

Seat cushion B about pivot 22
When the front portion of the seat cushion is turned upright to stand up, the rear portion of the seat cushion enters between the front and rear left and right moving rails. In order to realize this, the pivot 22 is disposed forward of the pivot for tilting and rotating the seat back, and the positions of the left and right moving rails 36, 36 are selected so as not to interfere with the rear portion of the seat cushion. The positions of the left and right moving rails 36, 36 are determined by a combination of the shape and dimensions of the rail pedestal member including the base bracket 15 and the height brackets 16, 17 and the shapes and dimensions of the side supports 20, 20. This is because the rotation space of the seat back B is secured by the sum of the height of the rail base member and the height of the side supports 20, 20. Further, by selecting the heights of the rail base member and the side support individually, The positions of the left and right moving rails 36, 36 are determined.

In the above embodiment, the description of the lock mechanism for determining the stop position of the movable rail is omitted. However, this point can be easily implemented by combining conventionally known mechanisms.

The operation of the above-described embodiment will be described.
When raising the seat cushion from the seat cushion sitting state in FIG. 1 to the storage position, the lock pin 28 is pulled rightward in FIG. When the seat cushion B is rotated clockwise in FIG. 1 in a state in which the lock pin 28 is pulled out, the rear portion of the seat cushion enters between the two rails 36 without contacting the left and right moving rails 36. . At this position, the lock pin 28 matches the through hole 29, so that the lock pin 28 enters the through hole 29 by the tension of the compression coil spring 32, and the standing state is determined. After the seat cushion B is erected as described above, the seat A is moved along the front and rear moving rails 2 to utilize the space. Also, with the seat cushion B in the seating position, the seat cushion B is moved in the left-right direction to place a table or to easily load a long load such as skis. Further, as shown in FIG. 1, the seat cushion B can be moved along the left and right moving rails with the seat cushion B standing upright. This is appropriately adopted depending on the shape and size of the luggage or the place and shape of the space formed in the room.

FIGS. 10 to 12 show an example in which a swing arm swinging in the left-right direction is installed as a substitute for the left-right moving rail. In this structure, the same members as those described above are denoted by the same reference numerals in the drawings, and detailed description is omitted. The base bracket 15 here has a U-shaped cross section opened upward, and a pair of left and right swing arms 47, 47 is attached thereto. That is, the lower ends of the arms 47, 47 are inserted into the base bracket 15, and the shafts 48, 48 pass therethrough. The upper portions of the arms 47 are also pivotally connected to the frame 23 via the shafts 49, 49 and the brackets 50, 50. The stopper pieces 51, 51 are welded on the base bracket 15, and the swing angles of the arms 47, 47 are determined thereby. Connection brackets 52, 52 are welded to the left and right rear of the frame 23, and a reclining mechanism and an anchor 41 are attached thereto.

Since this structure employs a left-right swing method, a large amount of left-right movement of the seat cushion can be obtained. For example, it is 80 mm. Further, since the structure is based on the swing arm, it is easy to increase the connection rigidity between the frame 23 and the front and rear moving rails 2. Therefore, even when the anchor fitting 41 is connected to the frame 23 side, it is possible to secure sufficient tensile rigidity, and even if the amount of lateral movement of the seat cushion becomes large, the seat belt wearing property is hindered. Nothing.

[0020]

According to the present invention, since the left and right moving rails are arranged between the lower rail base member and the upper side support, the rail base member is provided. A large degree of freedom for selecting the shape and dimensions of the side support and the side support can be secured. In other words,
The combination of the shape / dimension of the rail base member and the shape / dimension of the side support functions advantageously. This is because, firstly, the rotation space of the seat back is set by the sum of the height of the rail base member and the height of the side support members. The height selection determines the position of the left and right moving rails. By such position selection of the left and right moving rails, rail interference at the time of rotation of the seat cushion can be avoided, and the rear portion of the seat cushion can be successfully inserted between the left and right moving rails.

The side support is arranged on the side of the seat cushion, and while obtaining the bonding property with the seat cushion,
Since it provides a joint structure for left and right moving rails, it plays a multifunctional role regardless of a single part,
This contributes to simplifying the structure and reducing the number of parts. In addition, since the flexible connecting member is arranged between the anchor fitting fixed to the rail base member and the seat belt buckle, when moving the seat cushion left and right,
The buckle follows smoothly and does not impair the function of the seat belt.

[Brief description of the drawings]

FIG. 1 is an overall side view showing an embodiment of the present invention.

FIG. 2 is a side view in which only a side support is enlarged.

FIG. 3 is a sectional view taken along line (3)-(3) of FIG. 2;

FIG. 4 is a sectional view taken along line (4)-(4) of FIG. 2;

FIG. 5 is a vertical sectional side view showing an installation state of a left and right moving rail.

FIG. 6 is a sectional view taken along line (6)-(6) of FIG. 1;

FIG. 7 is a side view showing a mounting portion of an anchor.

FIG. 8 is an exploded perspective view showing a metal component.

FIG. 9 is an exploded perspective view showing a related structure between a seat and a front-rear moving rail.

FIG. 10 is a simplified front view showing a swing arm type structure.

FIG. 11 is a partial front view showing a mounting structure of a swing arm.

FIG. 12 is a three-dimensional view of a single swing arm.

[Explanation of symbols]

 B Seat Cushion C Seat Back A Seat 1 Floor 2, 2 Front and Rear Moving Rail 6 Movable Rail 15, 16, 17 Rail Base Member 20, 20 Side Support 34, 35 Rail Joint 36, 36 Left / Right Moving Rail 41 Anchor Bracket 42 Buckle 43 Connecting member 22 Axis

Claims (3)

[Claims] 1. A seat having a seat cushion and a seat back in which a seat can move in the front-rear direction and the left-right direction of a vehicle. The pedestal member is formed integrally with the movable rail, and a pair of side supports are arranged on the left and right sides of the seat cushion, and the side supports are connected to the seat cushion. A seat moving device, wherein a rail connecting portion is provided at a lower portion and a pair of front and rear moving rails is provided between the rail base member and the rail connecting portion. 2. A flexible connecting member according to claim 1, wherein a flexible connecting member is provided between the anchor metal fixed to the rail base member and the seat belt buckle, and the connecting member allows the sheet to move left and right. A seat moving device, wherein 3. The seat cushion according to claim 1, wherein the pivot for raising the seat cushion, which is provided between the side support and the seat frame, is disposed forward of the pivot for tilting and rotating the seat back. When the part is turned upward and raised, the position of the pivot and the left and right moving rails for the seat cushion rising is set so that the rear part of the seat cushion enters between the front and rear left and right moving rails. Seat transfer device to do.