JP2004058830A - Seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seat device provided with a locking mechanism locking the seat device on a floor securely without being affected by dimensional unevenness which occurs when manufacturing the vehicle floor and the seat device. <P>SOLUTION: This seat device is constituted in such a way that a first lock mechanism 20 is provided with a first bracket 21 connected with a seat main body 10 and a second bracket 28 locking in a first locking member 30 and a rotary shaft 22 is fixed to either of the first bracket 21 and the second bracket 28. A long hole 21b in which the rotary shaft 22 is fitted is provided in the other bracket of the first bracket 21 and the second bracket 28. When the second locking member 50 is engaged with a second lock mechanism 40, the seat main body 10 is moved in the forward and backward directions. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a seat device for a vehicle, and more particularly to a seat device that enables the seat device to rotate with respect to the floor of the vehicle and separates the seat device from the floor to make the space on the floor of the vehicle versatile. About.
[0002]
[Prior art]
The seat device is configured so that the seat device is flipped up on the floor of the vehicle to be in the upright position, or the seat device that has been further flipped up is detached from the floor and expanded to be usable in a luggage storage space on the floor. For example, there is one disclosed in US Pat. No. 5,498,051. In this embodiment, a first lock mechanism having a rotating shaft for rotatably supporting the seat device with respect to the floor is attached to the lower front end of the seat device, and the seat device is also provided at the lower rear end of the seat device. A second lock mechanism that supports and locks on the floor is provided. The first lock mechanism and the second lock mechanism are configured to be able to be locked and released from the first and second strikers fixed to the floor of the vehicle, respectively. Then, the engagement between the second lock mechanism and the second locking member is released, and the seat device can be rotated around the rotation axis of the first lock mechanism to be raised on the floor. Further, from the standing state, the first locking mechanism and the first locking member are disengaged from each other, so that the standing seat device can be detached from the floor. The luggage storage space on the vehicle floor can be widely used.
[0003]
[Problems to be solved by the invention]
However, in the seat device having this configuration, the distance between the second lock mechanism and the first lock mechanism that connects the seat device to the vehicle floor is set to a predetermined size. For this reason, depending on the dimensional variation that occurs in the vehicle floor and the seat device during manufacture, there is a problem that the second locking mechanism becomes difficult to lock or an excessive load is applied during the locking process. In order to avoid this problem, when assembling the first and second strikers on the vehicle floor, the first and second strikers are fixed while adjusting their positions. This required a lot of man-hours.
[0004]
For this reason, the present invention provides a seat device provided with a locking mechanism that can reliably lock the seat device on the floor without being affected by dimensional variations that occur on the vehicle floor and the seat device when manufactured. As an issue.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a first technical means adopted in the present invention is a seat body supported on a floor and a first body fixed to the floor and supporting a front portion of the seat body. A locking member, a second locking member fixed to the floor and supporting a rear portion of the seat body, a first locking mechanism capable of engaging with and disengaging from the first locking member; A seat device including a stop member and a second lock mechanism capable of engaging and disengaging.
The first lock mechanism includes a first bracket coupled to the seat body, and a second bracket that can be locked to the first locking member, and is provided on one side of the first bracket or the second bracket. An elongate hole for fixing the rotating shaft, and the rotating shaft fitted to the other side of the first bracket or the second bracket, wherein when the second locking member and the second locking mechanism are engaged, the seat is The main body is configured to be movable in the front-rear direction.
[0006]
With this configuration, if there is a manufacturing variation in the position of the first locking mechanism, the first locking member, the second locking mechanism, and the second locking member on the floor of the vehicle or the seat body, the second locking is performed. The rotating shaft moves forward or backward in the elongated hole so that the member and the second lock mechanism are securely engaged.
[0007]
Further, a technical second means adopted in the present invention is that, in addition to the first means, a pin is provided on the side of the first bracket or the second bracket to which the rotating shaft is fixed, while being separated from the rotating shaft. And a cam hole for engaging the pin is formed in the first bracket or the second bracket having the elongated hole, and the second bracket is rotated in one direction with respect to the first bracket. When the second bracket is rotated with respect to the first bracket against the urging force of the spring body, the rotating shaft is moved in the elongated hole according to the rotation angle of the second bracket. The cam hole is formed in a shape to be moved to a predetermined position.
[0008]
With this configuration, when the seat body is rotated to return from the tumble position to the seating position, the pin moves along the shape of the cam hole, so that the rotation shaft is positioned at the center of the elongated hole. Operate to move.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a seat device 1 according to the present invention will be described with reference to FIGS.
[0010]
As shown by a two-dot chain line A or a solid line in FIG. 1, the seat device 1, when the seat body 10 is set in a seatable state or a folded state, moves the seat body 10 to the front side (FIG. 1 is provided on a floor 9 of the vehicle at a first locking mechanism 2 and a second locking mechanism 4 is supported at a rear side.
[0011]
The seat body 10 includes a cushion portion 11 serving as a seating portion and a back portion 12 serving as a backrest portion, and a reclining device (not shown) attached between the cushion portion 11 and the back portion 12 is mounted. By the operation of the reclining device, the angle of the back 12 can be set to a seatable state shown by a two-dot chain line A in FIG. 1 and a folded state shown by a solid line. It is known that the back of the folded seat back 12 can be used as a table.
[0012]
In the seat device 1 according to the present invention, as shown by a two-dot chain line B in FIG. 1, the second locking mechanism 4 that supports the rear of the seat body 10 is released from the engagement with the floor 9 and the first It can be rotated forward (leftward in FIG. 1) around a rotation shaft 22 provided in the locking mechanism 2. And it is the structure which can be made into what is called a tumble state, when the cushion part 11 stands. Further, the seat body 10 can be detached from the floor 9 by operating the first locking mechanism 2 to release the engagement with the floor 9 from the tumble state.
[0013]
As shown in FIGS. 1 and 2, the first locking mechanism 2 includes a first locking mechanism 20 attached to the seat body 10 and a first striker (first locking member) 30 fixed on the floor 9. It is composed of The first striker 30 has a base 33 fixed to the floor 9 with mounting holes 33a and 33b, and two locking rod portions 31 and 32 that stand upright from the base 33 and are arranged in front and rear. On the other hand, the first lock mechanism 20 includes a lower bracket 28, and the lower bracket 28 is formed with grooves 28a and 28b into which the horizontal locking portions 31a and 32a of the locking rod portions 31 and 32 respectively fit. The groove 28a in which the front horizontal locking portion 31a fits is formed to open downward, and the groove 28b in which the rear horizontal locking portion 32a fits is formed to open rearward.
[0014]
As shown in detail in FIG. 2, the first lock mechanism 20 includes an upper bracket 21 rotatably connected to an upper portion of a lower bracket 28 by a rotation shaft 22. The upper bracket 21 is fixed to the front lower surface of the frame 11a of the cushion portion 11 by a mounting hole 21c. A fixing nut 29 is attached to an upper end of the lower bracket 28, and a rotation shaft 22 of the upper bracket 21 is fastened to a screw portion 29 a of the fixing nut 29. An elongated hole 21b is formed in the upper bracket 21, and the rotating shaft 22 penetrates the elongated hole 21b. The elongated hole 21b has a shape extending in the front-rear direction when the seat cushion 11 is supported on the floor 9 by the first locking mechanism 2 and the second locking mechanism 4, as shown in FIG. Further, the width of the elongated hole 21b and the diameter portion 22a of the rotary shaft 22 are set to substantially the same size, so that the rotary shaft 22 is restricted from moving in the width direction of the elongated hole 21b, and is allowed to move in the length direction. . With respect to the elongated hole 21b, an arc-shaped cam hole 21a is formed at a position opposite to the mounting hole 21c. Then, the pin 23 is fitted to the cam hole 21a and mounted upright on the side surface of the lower bracket 28. Both ends of the cam hole 21a come into contact with the pin 23 when the lower bracket 28 rotates with respect to the upper bracket 21, and act as stoppers for defining a range of rotation.
[0015]
As shown in FIG. 2, a hook 25 is rotatably mounted on the side surface of the lower bracket 28 below the pin 23 and above the groove 28 a by a pin 27. The hook 25 has a groove 25a that opens forward in the lower part, and the groove 25a engages with the horizontal locking part 31a of the locking rod part 31, so that the locking rod part 31 fits into the groove 28a. The configuration is such that the state can be maintained.
[0016]
A locking groove 27b is formed in the pin 27, and a coil spring 24 whose one end is locked in the locking groove 27b and the other end is locked in a hole 28e provided in the lower bracket 28 is provided. It is urged to rotate in a direction to be locked with 31. Further, a plurality of grooves 27a extending in the length direction are formed in the outer diameter portion of the pin 27, and an operation bar 26 which is engaged with the groove 27a and fixed to the pin 27 is attached by a hole 26a at one end. The other end of the operation bar 26 is fixed to a pin (not shown) of a first lock mechanism (not shown) attached to the opposite side of the seat body 10. Thus, the hook 25 can be released from the locking rod portion 31 by pulling the operation bar 26 upward against the urging force of the coil spring 24.
[0017]
A pipe 61 extending horizontally and horizontally is fitted and attached to the fixing nut 29 so as to connect the left and right first lock mechanisms 20. A stopper 63 is welded on the outer diameter of the pipe 61, and one end 62a and the other end 62b of the stopper 63 are engaged with the pin 26 attached to the hole 21d of the upper bracket 21 to form a coil-shaped spring. A lifting spring 62 is mounted. The flip-up spring 62 exerts an acting force on the upper bracket 21 so as to rotate the seat body 10 in a direction to be in a tumble state, that is, counterclockwise in FIG. When the seat body 10 is brought into the tumble state (two-dot chain line B in FIG. 1) or returned to the folded position, the weight of the seat body 10 is supported by the flip-up spring 62 so that it can be operated lightly. .
[0018]
As shown in FIGS. 1 and 6, the second locking mechanism 4 includes a second locking mechanism 40 attached to a lower rear portion of the frame 11 a of the seat body 10 and a second striker (fixed on the floor 9). (Second locking member) 50. The second striker 50 has a shape similar to that of the first striker, and has a locking rod portion 51 having a horizontal locking portion 51a.
[0019]
The second lock mechanism 40 is a known lock mechanism including a latch 43 and a pawl 44 that engages the latch 43, similar to an applicable lock mechanism such as an automobile door lock. Then, the latch 43 engages with the second striker 50 and maintains the engagement when the rotation is stopped by the pawl 44, and the cable 45 connected to the pawl 44 is pulled by operating means (not shown). The latch 43 is disengaged from the second striker 50 when the latch 43 is released. Note that the cable 45 may be configured so as to be linked with the folding operation of the seat back 12. When the second lock mechanism 40 is released, the seat body 20 can be rotated forward around the rotation shaft 22 of the first lock mechanism 20, and can be brought into a tumble state.
[0020]
As shown in FIG. 6, the bracket 42 provided in the second lock mechanism 40 has a groove 41 so as to open downward. In the groove 41, the position of the horizontal locking portion 51a of the locking rod portion 51 that is opposed to the seat body 10 and the floor 9 of the vehicle is also a manufacturing variation, and as shown in FIG. Even if it changes in the left-right direction), it is formed in a shape in which the lower width is widened so as to be acceptable.
[0021]
Next, the operation of the seat apparatus 1 configured as described above will be described.
[0022]
FIGS. 3 to 5 show various states of the first locking mechanism 2 when the seat body 20 changes from the folded state shown in FIG. 1 to the tumble state or vice versa. Further, as shown in detail in FIG. 7, the arc shape of the upper inner surface 21d of the cam hole 21a of the first lock mechanism 20 is such that when the distance from the center of the rotating shaft 22a to the radial surface of the pin 23 is r, the upper inner surface 21d Is formed so as to move from the above position to the position of the distance r on the axis of the elongated hole 21b, so that the seat body 20 is in a tumble state (the position in FIG. 3) as shown in FIG. When the seat cushion 11 of FIGS. 4 and 5 is returned to the folded state, the rotating shaft 22a is positioned at the most rearmost position (the uppermost portion in FIG. 7) of the elongated hole. It moves to the rear of 21b (downward in FIG. 7). Then, when returned to the folded state of FIG. 7, the rotating shaft 22 is set to be at the center position in the longitudinal direction of the elongated hole 21b. Therefore, even if the position of the second striker 50 is displaced in any of the front and rear directions due to an assembly error of the vehicle or the like, the seat body 20 can move the rotation shaft 22 within the range of the elongated hole 21b. . Then, the horizontal locking portion 51a of the second striker 50 can be smoothly guided into the groove 41 to be in a predetermined locking state.
[0023]
In the tumble state shown by the two-dot chain line B in FIG. 1, the position is maintained by the action of the flip-up spring 62, while being connected to the vehicle body by restraining means such as a belt (not shown) and safely restrained. Then, the space on the floor 9 can be used for storing luggage.
[0024]
As described above, the hook 25 can be released from the locking rod portion 31 by pulling the operation bar 26 upward against the urging force of the coil spring 24, as shown in FIGS. In a position other than the tumble state, the projection 25c is formed on the hook 25 so as to be in contact with the upper bracket 21 and acts so that the hook 25 cannot be released. In addition, a fail safe in which the hook 25 is not accidentally released is achieved.
[0025]
【The invention's effect】
As described above, in the present invention, at the front end of the seat body, an elongated hole is provided in the upper bracket of the first lock mechanism that supports the seat body, the rotation shaft can be moved by the elongated hole, and the seat body is moved from the tumble position. In the process of returning to the folded position, the seat body is automatically adjusted in the front-rear direction by the action of the cam hole and the pin. As a result, even if the position of the seat body and the position of the second lock mechanism are displaced, the seat body is securely locked.
[Brief description of the drawings]
FIG. 1 is a side view showing a folded state in which a seat back is turned forward in a seat device according to the present invention.
FIG. 2 is an exploded perspective view of a first locking mechanism in the seat device according to the present invention.
FIG. 3 is a side view of a first locking mechanism when the seat device according to the present invention is in a tumble state.
FIG. 4 is a side view of the first locking mechanism when the seat device according to the present invention returns from the tumble state to the folded state.
FIG. 5 is a side view of the first locking mechanism when the seat device according to the present invention is in a folded state.
FIG. 6 is a side view showing a state of the second locking mechanism immediately before the seat device according to the present invention enters a folded state.
FIG. 7 is a side view showing a shape of a cam hole formed in a first locking mechanism of the seat device according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat device 9 Floor 10 Seat main body 20 First lock mechanism 21 First bracket (upper bracket)
21a Cam hole 21b Slot 22 Rotating shaft 23 Pin 28 Second bracket (lower bracket)
30 first locking member (first striker)
40 second locking mechanism 50 second locking member (second striker)

Claims (2)

A seat body supported on the floor,
A first locking member fixed to the floor and supporting a front portion of the seat body;
A second locking member fixed to the floor and supporting a rear portion of the seat body;
A first lock mechanism capable of engaging with and disengaging from the first locking member;
A seat device comprising: a second lock mechanism configured to be capable of engaging and disengaging with the second locking member.
The first lock mechanism includes a first bracket coupled to the seat body, and a second bracket that can be locked to the first locking member, and is provided on one side of the first bracket or the second bracket. An elongate hole for fixing the rotating shaft, and the rotating shaft fitted to the other side of the first bracket or the second bracket, wherein when the second locking member and the second locking mechanism are engaged, the seat is A seat device wherein the main body is configured to be movable in the front-back direction. A pin is fixed to the side of the first bracket or the second bracket to which the rotation shaft is fixed, separately from the rotation shaft, and the pin is connected to the first bracket or the second bracket having the elongated hole. A spring for urging the second bracket in one direction with respect to the first bracket, wherein the second bracket is held against the urging force of the spring body. The cam hole is formed in a shape for moving the rotation shaft to a predetermined position in the elongated hole according to a rotation angle of the second bracket when rotating with respect to one bracket. The sheet device according to claim 1.

Images