JP4076423B2 - A mechanism that allows the seat to move back and forth - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mechanism that enables a vehicle seat to move forward, backward, left, and right, and more particularly, to a front-back, left-right movement mechanism that can be applied to various seats.
[0002]
[Prior art]
Conventionally, a mechanism that can move a seat back and forth has been widely used in vehicles (for example, see Patent Document 1). A seat adjuster is used as a mechanism for moving the seat back and forth.
[0003]
[Patent Document 1]
Japanese Patent No. 3087722 [0004]
A seat adjuster that can move the seat back and forth is composed of a lower member that is attached to the floor surface of a vehicle or the like, and an upper member that is slidably housed in the lower member. A seat frame (including a back frame if necessary, and a seat is configured by incorporating a cushion into these frames) is attached to the upper member, and is movable in the front-rear direction.
[0005]
By such a back-and-forth movement mechanism, the seat can be arranged at an appropriate position in the vehicle, for example. However, in seats used for minivans, one-box cars, etc., it is desirable that the seat can be moved not only in the front-rear direction but also in the left-right direction so that people can pass near the seat.
[0006]
Also, because it may be desirable for the rear seat to be able to move up to the rear of the vehicle without being blocked by the wheel house, it can be moved not only in the front-rear direction but also in the lateral direction to avoid the wheel house. Sheets are being implemented (see, for example, Patent Document 2).
[0007]
[Patent Document 2]
Japanese Patent Laid-Open No. 10-203207
In this conventional mechanism that can move the seat not only in the front-rear direction but also in the left-right direction, a pair of guide rails extending in the front-rear direction is attached with a seat mounting plate via a roller. A slider-free bracket is arranged, and a seat (seat) is attached to the bracket, so that the seat can move not only in the front-rear direction but also in the left-right direction.
[0009]
[Problems to be solved by the invention]
However, such a mechanism cannot use a conventional longitudinal movement mechanism (the above-mentioned seat adjuster).
[0010]
As shown in Patent Document 2, a seat (seat) has a cushion frame, and providing a seat mounting plate of almost the same size as this cushion frame increases the number of parts and the weight of the seat. Become.
[0011]
Accordingly, the present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a mechanism that can use a conventional seat adjuster and that allows the seat to move back and forth and from side to side.
[0012]
Another object of the present invention is to provide a mechanism that allows the seat to move back and forth and right and left without increasing the number of parts and the overall weight.
[0013]
Furthermore, another object of the present invention is to provide a mechanism that allows easy mounting of the seat and the mechanism, and allows various seats to be mounted and that allows the seat to move back and forth and from side to side.
[0014]
It is another object of the present invention to provide a mechanism that allows the seat to be moved back and forth and from side to side when the seat is used together with a seat belt.
[0015]
[Means for Solving the Problems]
The mechanism of the present invention that achieves the above object includes a seat having a cushion attached to a seat frame including a pair of side frames and a front connecting member and a rear connecting member that connect the side frames in front and rear, respectively. A front / rear / left / right moving mechanism that can move forward / backward / left / right, and a pair of lower members fixed to the floor for moving the seat in the front / rear direction; A front-rear direction moving mechanism comprising a pair of upper members movable in the direction, and a front connecting member and a rear connecting member that connect the upper members in front and rear, respectively, It consists of the left-right direction moving mechanism which consists of the front moving member and back moving member which can move along a connection material. Here, the front and rear moving members are combined with the front and rear connecting members of the seat.
[0016]
[Means for Solving the Problems]
The mechanism of the present invention that achieves the above object includes a seat in which a cushion is attached to a seat frame that includes a pair of side frames and a front connecting member and a rear connecting member that connect the side frames in front and rear, respectively. A front / rear / left / right movement mechanism that is movable back and forth, left and right,
Front-rear movement comprising a pair of lower members fixed to the floor for enabling the seat to move in the front-rear direction, and a pair of upper members movable in the front-rear direction by engaging with each of the lower members Mechanism,
It consists of a front connecting member and a rear connecting member that connect the upper members forward and rear, respectively, and a front moving member and a rear moving member that engage with each connecting member and are movable along the connecting member. A left-right direction moving mechanism and a movable rod extending through both of the upper member, and the front and rear moving members are coupled to the front and rear connecting members of the seat; Both ends of the rod are attached to the side frame so as to move left and right together with the side frame, and a seat belt bracket is attached to the end of the rod .
[0017]
There may be further provided a connector for adjusting an angle between the side frame and the U-shaped back frame in an adjustable manner.
[0018]
The connecting member is preferably composed of an attachment member connected to each of the upper members and a rail member connected to both attachment members, and the moving member is movably engaged with the rail member.
[0019]
The seat can be moved in the front-rear direction by an upper member engaged with the lower member, and can be moved in the left-right direction by a moving member engaged with a connecting member connected to the upper member.
[0021]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows a perspective view of the mechanism 1 that enables the seat to move forward, backward, left and right. The illustrated seat frame 30 (attached to the frame to form a seat) attached to the mechanism has a pair of side frames 31a and 31b, and a back frame 40 connected to the end of the side frame. including.
[0022]
A front pipe 32 and a rear pipe 33 are connected to the front and rear sides of the side frames 31a and 31b by welding. The front and rear pipes constitute a frame for holding the seat cushion, but by appropriately selecting the length of the front and rear vip, frames for various seats having different sizes can be constructed. Further, a spring (not shown) may be used to elastically support the seat cushion.
[0023]
Side plates 41a and 41b are fixed to the rear ends of the side frames 31a and 31b via rotating members 34a and 34b, respectively. Further, a plurality of members 42 are connected to the side plates 41a and 41b. A pipe 43 is connected and fixed to the tips of the side frames 41a and 41b, and a pipe portion for attaching a headrest (not shown) is fixed.
[0024]
As shown in FIG. 2 (A), the sheet adjuster 2 constituting the mechanism 1 is shown in FIG. 2 (A) (in order to simplify the explanation, only the directly related members are drawn). As in the prior art, the seat is mounted on the floor and can be moved in the front-rear direction. The lower members 3a and 3b and the lower member are slidably housed in the lower members. It consists of 4a and 4b. At the front and rear ends of the lower members 3a, 3b, mounting pieces 3a ', 3a "and 3b', 3b" for mounting the seat to the floor surface are provided.
[0025]
Attachment members 5a, 6a and 5b, 6b having L-shaped cross sections are fixed to the front and rear of the two upper members 4a and 4b, respectively, so as to face each other. Rails 7 and 9 are connected to the mounting members 5a, 6a and 5b, 6b, respectively.
[0026]
As shown in FIG. 2 (B), the rail 7 includes a flat plate 7a (this plate is connected to the mounting members 5a and 5b), an L-shaped anti-folding plate 7b, and a cross section. Is an inverted L-shape and consists of a pair of rail members 7c and 7d which are back-to-back. Similarly, as shown in FIG. 2C, the rail 9 includes a flat plate 9a (which is connected to the mounting members 6a and 6b) and an anti-curling plate 9b having an L-shaped cross section. , And a pair of rail members 9c, 9d which are crossed in an inverted L shape and are back to back.
[0027]
Upper moving members 8 and 10 that are engaged with the rails 7 and 9 and are movable along the rails (left and right) are arranged.
[0028]
As shown in FIG. 2 (B), the upward moving member 8 is a C-shaped member covering the pair of rail members 7c and 7d, engages with the rail, and moves along the rail (left and right). And (b) a member 8a that can be moved, and a plate preventing plate 8b that engages with the plate preventing plate 7b from the member 8a (but can move left and right).
[0029]
Similarly, as shown in FIG. 2 (C), the upward moving member 9 is a C-shaped member covering the pair of rail members 9c and 9d, and engages with the rail so that the rail moves along the rail. And a member 10a that can move (to the left and right), and further, from the member 10a, a plate preventing plate 9b that engages with the plate preventing plate 9b (but can move left and right).
[0030]
The turn-up prevention plate makes the engagement between the moving member and the rail more firm, and prevents the moving member from coming off the rail when a force is applied to the moving member.
[0031]
Thus, the arranged moving members 8 and 10 can move in a direction transverse to the front-rear direction in which the upper members 4a and 4b can move, that is, in the left-right direction.
[0032]
Instead of the embodiment described above, it is possible to connect the rail directly to the two upper members. However, the combination of the mounting member and the rail depends on the use of the seat. When it is necessary to change the distance between the upper members, there is an advantage that the distance between the upper members can be determined by preparing a rail having a desired length.
[0033]
As shown in FIG. 1, the front pipe 32 and the rear pipe 33 are fixed to the moving members 8 and 10 by mounting brackets 12a, 12b and 13a, 13b, respectively. Thus, the seat frame 30 and the mechanism 1 are attached.
[0034]
Thus, in the present invention, each rail is not directly connected to the side frame, but is connected to the side frame via the front and rear pipes, so that the seat frame can be changed in size depending on various uses. , It can be simply connected to the upward moving member rather than the mounting bracket, and therefore the mechanism is versatile. Furthermore, the seat frame and the mechanism can be easily attached.
[0035]
As described above, when the upper member moves relative to the lower member, the seat frame, that is, the seat can move in the front-rear direction, and when the upper moving member moves relative to the rail, the seat (frame) moves in the left-right direction. This is possible (FIG. 1 shows when the seat frame has moved to the rightmost side, and FIG. 3 shows when the seat frame has moved to the leftmost side).
[0036]
When a seat having the mechanism of the present invention is used as a car seat, a seat belt must also be used. However, when a metal fitting such as a buckle of a seat belt is fixed to the floor of an automobile, the movement operation of the seat forward / backward and left / right by the mechanism of the present invention is prevented. On the other hand, if these metal fittings are attached to the side frame, the force acting via the seat belt (for example, impact force at the time of collision) concentrates on the attachment metal fittings 12a, 12b, 13a, 13b, and the metal fittings may come off. Therefore, it is necessary to make such a force act on the seat adjuster 2.
[0037]
Hereinafter, a configuration in which the above force does not concentrate on the mounting bracket but acts on the adjuster 2, that is, the vehicle will be described.
[0038]
As indicated by broken lines in FIG. 2A, through holes 50a and 50b are provided behind the upper members 4a and 4b (see FIG. 2), and the rod 51 is passed through the holes. As shown schematically in FIGS. 1 and 3, both ends of the rod further penetrate the side frames 31a and 31b, and end fittings 52a and 52b (these fittings are also attached to the side frame). ). Seat belt brackets are connected to the end brackets 52a and 52b.
[0039]
With this configuration, the force acting on the end fittings 52a and 52b acts on the rod 50, and acts on the upper members 4a and 4b, that is, the seat adjuster 2, and concentrates on the mounting fittings 12a, 12b, 13a and 13b. There is no. In addition, the rod 50 moves to the left and right together with the side frame, and the seat belt attached to the end fittings 52a and 52b can also move to the left and right together with the seat frame 30. I can't.
[0040]
【The invention's effect】
The mechanism that enables the seat to be moved back and forth and right and left according to the present invention can use a conventional seat adjuster and can be applied to various seats (frames).
[0041]
Furthermore, the mounting with the seat (frame) can be performed only by the mounting bracket, the mounting is easy, and the overall weight does not increase.
[0042]
Furthermore, even if this mechanism is applied to a seat that is used with a seat belt, the seat belt does not interfere with the forward / backward / left / right movement of the seat.
[Brief description of the drawings]
FIG. 1 is a perspective view of the mechanism with a seat frame attached.
2A is a perspective view of the mechanism of the present invention, and FIG. 2B is a cross-sectional view of the rail and the moving member along the line BB in FIG. 2A. 2 (C) is a cross-sectional view of the rail and the moving member along the line CC in FIG. 2 (A).
FIG. 3 is a perspective view of the mechanism in a state in which the seat frame is moved to the leftmost direction.
[Explanation of symbols]
1 Mechanism of the present invention
2 Seat adjuster
3a, 3b Lower member
4a, 4b Upper member
5a, 5b Mounting member
6a, 6b mounting member,
7, 9 rails
8, 10 Moving member
50a, 50b Through hole
51 Rod

Claims (4)

Front / rear / left / right enabling a seat having a cushion attached to a seat frame including a pair of side frames and a front connection member and a rear connection member for connecting the side frame in front and rear, respectively. A moving mechanism,
A front-rear direction comprising a pair of lower members fixed to the floor for enabling the seat to move in the front-rear direction, and a pair of upper members that engage with each of the lower members and are movable in the front-rear direction A moving mechanism;
A left-right direction moving mechanism comprising a front moving member and a rear moving member that engage with a front connecting member and a rear connecting member that connect the upper members in front and rear, respectively, and are movable along the connecting member; ,
A movable rod extending through both of the upper members ,
The front and rear moving members are coupled to the front and rear connecting members of the seat, and both ends of the rod are attached to the side frame so as to move left and right together with the side frame. A back- and- forth and left-right movement mechanism characterized in that a seat belt bracket is attached .   The front / rear / left / right movement mechanism according to claim 1, wherein a U-shaped back frame is connected to an end of the side frame, and a seat cushion and a seat back are attached to the seat frame and the back frame, respectively.   The back-and-forth / left-right moving mechanism according to claim 2, further comprising a connector that adjustably connects an angle between the side frame and the U-shaped back frame.   2. The front and rear according to claim 1, wherein the connection member includes an attachment member connected to each of the upper members and a rail member connected to both attachment members, and the moving member is movably connected to the rail member. Left-right movement mechanism.

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