JP2010234942A - Seat device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent the rear end of a seat from sinking downward when the seat is raised up forward. <P>SOLUTION: A seat device 1 for a vehicle includes: an arm 21 provided rotatably around a rotary shaft 22 to be in a forward inclined state from a backward inclined state; a seat 2 connected by a rotary shaft 20 to the rear end of the arm 21 in a state that the arm 21 is inclined backward, and provided rotatably around the rotary shaft 20 in the right and left directions; a guided part 30 provided to the rear part of the seat 2; and a guide 31 guiding the guided part 30 backward and forward. When the arm 21 is rotated to be in the forward inclined state from the backward inclined state, the front side of the seat 2 is raised up and the guided part 30 is moved forward by the guide 31. Then, the guided part 30 is released from the guide 31 and the seat 2 is turned forward. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seat device, and more particularly, to a seat device in which a seat portion is raised up.

  In order to make effective use of the passenger compartment, there are some that can store the back row seats and middle row seats that are not used so that the space where the back row seats and the middle row seats were installed can be used for the cargo area. . Specifically, the seat can be stored by raising the seat part forward and then tilting the backrest forward (see, for example, Patent Document 1). On the other hand, when the seat is used, the seat can be assembled by raising the backrest, which has been lying down, and then tilting the seat back backward (see Patent Document 1).

  When the seat is assembled, the rear end of the seat sinks under the lower end of the backrest, and the lower end of the backrest and the upper rear end of the seat are in contact, so the lower end of the backrest and the seat The gap between the rear ends is filled. However, when raising the seat part forward, the rear end part of the seat part and the lower end part of the backrest interfere with each other. In order to solve this problem, the vehicle seat described in Patent Document 1 uses two torsion springs and arms.

  Specifically, as described in Patent Document 1, the fixing member (21a) is fixed to the floor (F), and one end of the arm (21c) is rotatable and fixed by the rotating shaft (21b). Connected to the member (21a), the other end of the arm (21c) is rotatable by a rotating shaft (21d) and connected to the seat (2). The first torsion spring (22) is provided at the connecting portion between the arm (21c) and the fixing member (21a). The load of the first torsion spring (22) is such that the arm (21c) is centered on the rotation shaft (21b). Thus, the arm (21c) is acted in a direction to rotate from the state of falling back to the state of falling forward. On the other hand, the second torsion spring (21i) is provided at the connecting portion between the arm (21c) and the seat (2), and when viewed from the left, the load of the second torsion spring (21i) is applied to the rotating shaft (21d). It acts on the seat (2) in the clockwise direction around the center.

  In the state in which the vehicle seat described in Patent Document 1 is assembled, the arm (21c) is tilted backward, the seat surface of the seat (2) faces upward, and the rear end of the seat (2) (2b) sinks under the lower end (3d) of the backrest. On the other hand, when the vehicle seat is to be stored from this state, the rear end (2b) of the seat (2) is rotated downward by the second torsion spring (21i), thereby causing the rear of the seat (2). The end (2b) shifts forward from below the lower end (3d) of the backrest (3). Then, when the arm (21c) is rotated from the state where the arm (21c) is tilted back to the state where the arm (21c) is tilted backward, the rear end (2b) of the seat (2) is lowered to the lower end of the backrest (3). The seat (2) is raised up without interfering with the part (3d).

JP 2007-216704 A

However, in the vehicle seat described in Patent Document 1, when the seat portion (2) is raised up, the rear end portion (2b) of the seat portion (2) sinks downward, so the seat portion (2) A space is required below the rear end (2b). Therefore, when installing the vehicle seat in the passenger compartment, the size and design of the passenger compartment are greatly limited.
Therefore, an object of the present invention is to prevent the rear end portion of the seat portion from sinking downward when the seat portion is lifted forward.

  In order to solve the above-described problems, according to the invention according to claim 1, the seat device is connected to the floor and falls forward from a state where the seat device falls backward with the first connecting portion with the floor as a center. An arm that is rotatably provided in a closed state, and is connected to the arm behind the position of the first connecting portion in a state in which the arm is tilted backward, and is connected to the arm with respect to the arm. A seat provided rotatably about a left-right axis around the connecting portion, and a portion of the seat that is behind the position of the second connecting portion in a state where the arm is tilted backward And a downward movement restricting part that restricts the sinking of the lower part.

  According to the invention which concerns on Claim 2, the said seat apparatus is that the part of the back side rather than the position of the said 2nd connection part of the said seat part in the state which the said arm fell down is swung up upwards. An upper movement restricting portion for restricting is further provided.

  According to the invention of claim 3, the range in which sinking is restricted by the downward movement restricting portion is larger than the range in which swinging is restricted by the upward movement restricting portion.

  According to the invention of claim 4, the seat device is further provided with a stopper that is provided on the seat portion and is separated from the arm when the arm is tilted backward, and the arm is tilted backward. The stopper comes into contact with the arm when it rotates from the state to the state of being tilted forward.

  According to the invention which concerns on Claim 1, it can prevent that the rear-end part of a seat part sinks greatly below. Therefore, even if there is no space below the rear end portion of the seat portion, the rear end portion of the seat portion can be pulled forward from below the lower end of the backrest. Therefore, when installing the seat device in the passenger compartment, the degree of freedom of the size, design, etc. of the passenger compartment is improved.

  According to the invention which concerns on Claim 2, it can prevent that the rear-end part of a seat part swings up, and can make it come out from the lower end of a backrest to the front. Therefore, the rear end portion of the seat portion and the lower end of the backrest do not interfere, and the seat portion can be easily raised.

  According to the third aspect of the present invention, when the arm rotates from the state where the arm is tilted forward to the state where the arm is tilted backward and the seat part is turned backward, the rear end of the seat part is reliably regulated by the downward movement restricting part. can do.

  According to the fourth aspect of the present invention, when the arm rotates from the state where it falls backward to the state where it falls forward, the stopper comes into contact with the arm, and the relative rotation angle between the arm and the seat is maintained. Therefore, after that, when the arm rotates from a state where the arm is tilted forward to a state where the arm is tilted backward, the rear end portion of the seat portion can be reliably restricted by the downward movement restricting portion.

It is the side view which showed the sheet | seat apparatus of 1st Embodiment of this invention. It is the perspective view which showed the sheet | seat apparatus of the same embodiment. It is the side view which showed the sheet | seat apparatus of the same embodiment. It is the side view which showed the sheet | seat apparatus of the same embodiment. It is the side view which showed the sheet | seat apparatus of the same embodiment. It is the side view which showed a part of sheet apparatus of the same embodiment. It is the side view which showed the sheet | seat apparatus of 2nd Embodiment of this invention. It is the perspective view which showed the sheet | seat apparatus of 3rd Embodiment of this invention. It is the side view which showed the sheet | seat apparatus of 4th Embodiment of this invention. It is the perspective view which showed the locking mechanism and guide in the same embodiment. It is the perspective view which showed the sheet | seat apparatus of 5th Embodiment of this invention. It is the side view which showed the rear part of the seat part of the seat apparatus in the same embodiment. It is arrow sectional drawing of the surface along XIII-XIII shown by FIG.

  Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. However, although various technically preferable limitations for implementing the present invention are given to the embodiments described below, the scope of the invention is not limited to the following embodiments and illustrated examples.

[First Embodiment]
FIG. 1 is a side view of the vehicle seat device 1.
The vehicle seat device 1 is used for a rear row seat and a middle row seat of a passenger car.
The vehicle seat device 1 includes a seat portion 2, a backrest 3 provided in a standing state on the back side of the seat portion 2, and a headrest 4 provided at an upper end portion of the backrest 3.

  The lower end of the backrest 3 is connected to the floor of the passenger compartment via a reclining mechanism. When the vehicle seat device 1 is used, the inclination of the backrest 3 can be adjusted by the reclining mechanism, and the backrest 3 is tilted backward, the backrest 3 is raised forward, and the inclination angle of the backrest 3 is maintained. be able to. In addition, when the vehicle seat device 1 is stored, the backrest 3 can be brought to the front by the reclining mechanism, and the backrest 3 can be put to sleep.

  The seat 2 is obtained by covering a frame with a foamed urethane pad and enclosing it with an outer skin. An elastic stopper 10 is attached to an intermediate portion between the front end portion and the rear end portion of one side surface of the seat portion 2. The elastic stopper 10 is a leaf spring, the front end portion of the elastic stopper 10 is fixed to the side surface of the seat portion 2, the elastic stopper 10 extends rearward from the fixed portion, and the elastic stopper 10 has a cantilever shape. It is supported by. The elastic stopper 10 is formed with an engagement recess 10a that is recessed toward the seat surface 2a. The engagement recess 10a is formed so that an engagement protrusion 26 described later can be engaged.

  A rod-shaped guided portion 30 is fixed to the rear end portion of one side surface of the seat portion 2. The guided portion 30 extends laterally from the side surface of the seat portion 2 and is provided in a state where it is raised with respect to the side surface.

  FIG. 2 is a perspective view showing the seat 2 and the like. As shown in FIG. 2, one end of an arm 21 is connected to the left and right sides of the seat 2 via a rotating shaft 20, and these arms 21 are provided so as to be rotatable around the rotating shaft 20 with respect to the seat 2. It has been. The rotating shaft 20 is a second connecting portion that connects the arm 21 and the seat portion 2.

  Here, the rotating shaft 20 is connected to the seat portion 2 in a state extending in the left-right direction from the left end portion to the right end portion of the seat portion 2. The rotating shaft 20 is provided so as to be rotatable with respect to the seat portion 2 around the axis. The connecting position of the rotating shaft 20 and the seat 2 is an intermediate portion between the front end portion and the rear end portion of the seat portion 2 and is a lower portion of the seat portion 2. The connecting position of the rotary shaft 20 and the seat portion 2 is in the vicinity of the elastic stopper 10, and the elastic stopper 10 is disposed slightly closer to the seat surface 2 a than the rotary shaft 20. One end of the arm 21 is fixed to the left and right ends of the rotating shaft 20. These arms 21 are provided perpendicular to the rotating shaft 20. In addition, the arm 21 and the rotating shaft 20 may not be fixed, but the rotating shaft 20 may be provided so as to be rotatable around the axis of the arm 21.

  The other end of the arm 21 is connected to the floor of the passenger compartment via the rotating shaft 22 and the bracket 23, and the arm 21 is provided to be rotatable around the rotating shaft 22 with respect to the floor. The rotating shaft 22 is a first connecting portion that connects the arm 21 and the floor.

  Here, the rotary shaft 22 is provided perpendicular to the arms 21 and extends in the left-right direction from the other end of one arm 21 to the other end of the other arm 21. It is fixed to the arm 21. In addition, brackets 23 are connected to the left and right ends of the rotating shaft 22, and the rotating shaft 22 is provided so as to be rotatable with respect to the bracket 23 about its axis. The bracket 23 is fixed on the floor of the passenger compartment by bolts 24. The arm 21 and the rotating shaft 22 may not be fixed, and the rotating shaft 22 may be provided so as to be rotatable around the axis of the arm 21.

  An engaging convex portion 26 is provided on the protruding end portion of the arm 21 on the rotating shaft 20 side. The engaging convex portion 26 can be engaged with the engaging concave portion 10 a of the elastic stopper 10.

  A torsion spring 25 is inserted into the gap between the arm 21 and the bracket 23, and the torsion spring 25 is wound around the rotating shaft 22. One end of the torsion spring 25 is hooked on the arm 21, and the other end of the torsion spring 25 is hooked on the bracket 23. The torsion spring 25 urges the arm 21 counterclockwise when viewed in the direction shown in FIG. 1, that is, the arm 21 is swung up from the rear side to the front side.

  As shown in FIG. 2, a guide 31 is provided behind the bracket 23 to guide the guided portion 30 back and forth with the guided portion 30 sandwiched up and down. The guide 31 includes a plate-like fixing portion 32 fixed on the floor of the passenger compartment by a bolt 37, a leg portion 33 provided in a standing state with respect to the fixing portion 32, and a rear side from the upper end of the leg portion 33. An extended lower receiving surface 34, an arcuate stopper 35 provided in a standing state from the rear end of the lower receiving surface 34, and an upper receiver extending forward from the upper end of the stopper 35 and facing the lower receiving surface 34 And a surface 36. The lower receiving surface 34 and the upper receiving surface 36 are provided in parallel to each other, and a space between the front end of the lower receiving surface 34 and the front end of the upper receiving surface 36 is open. The longitudinal length of the upper receiving surface 36 is shorter than the longitudinal length of the lower receiving surface 34, the lower receiving surface 34 extends forward from the front end of the upper receiving surface 36, and the front end of the lower receiving surface 34 is the upper receiving surface 36. It is located in front of the front edge. The upper receiving surface 36 and the lower receiving surface 34 are positioned below the lower end portion of the backrest 3 in a standing state, and the front ends of the upper receiving surface 36 and the lower receiving surface 34 are positioned forward of the lower end portion of the backrest 3. Further, the upper receiving surface 36 and the lower receiving surface 34 are both inclined so as to descend downward.

As shown in FIGS. 1 and 3, when the arm 21 is swung back with the rotating shaft 22 as a fulcrum, the arm 21 is lying backward. In this state, the rotating shaft 20 is located behind the rotating shaft 22, and the guided portion 30 is located behind the rotating shaft 20. In the state where the arm 21 has fallen back, the seat 2 falls down, the seat 2 is arranged on the floor, the seat surface 2a of the seat 2 faces upward, and the rear end of the seat 2 is Underneath the lower end of the backrest 3. In this state, the guide 31 is positioned behind the rotary shaft 20, the guided portion 30 is inserted between the upper receiving surface 36 and the lower receiving surface 34, and is positioned at the rear ends of the receiving surfaces 34, 36. is doing. In this state, the engaging convex portion 26 is disengaged from the engaging concave portion 10 a and is positioned rearward of the rotating shaft 20. This state is maintained by the lock mechanism. For example, the state shown in FIGS. 1 and 3 is maintained when the lock mechanism is hooked on the arm 21, the seat portion 2, the rotating shaft 20, or the guided portion 30.
The elastic stopper 10, the guided portion 30, and the guide 31 are provided as a pair on the left and right.

  In the state shown in FIG. 1 and FIG. 3, the guided portion 30 and the lower receiving surface 34 restrict the sinking of the rear portion of the seat portion 2 relative to the rotating shaft 20 downward. The guided portion 30 and the lower receiving surface 34 function as a downward movement restricting portion. On the other hand, the guided portion 30 and the upper receiving surface 36 are restricted from swinging up the portion of the seat 2 that is behind the rotating shaft 20, so that the guided portion 30 and the upper receiving surface 36 are restricted from moving upward. It functions as a part. Further, since the longitudinal length of the lower receiving surface 34 is longer than the longitudinal length of the upper receiving surface 36, the range in which the lower movement restricting portion restricts the sinking of the rear portion of the seat portion 2 is limited by the upper moving restricting portion. The rear swing is larger than the restricted range. Since the guided portion 30, the upper receiving surface 36, and the lower receiving surface 34 are provided at a position higher than the floor, the guided portion 30, the upper receiving surface 36, and the lower receiving surface 34 are provided at positions higher than the floor of the lower movement restricting portion and the upper movement restricting portion.

The operation of the vehicle seat device 1 will be described.
When the vehicle seat device 1 is stored, the lock mechanism is unlocked. When the lock mechanism is unlocked, the load of the torsion spring 25 acts on the arm 21, so that the arm 21 rotates about the rotating shaft 22 and swings up. At this time, the guided portion 30 is guided forward by the guide 31. That is, the movement of the guided portion 30 in the vertical direction (direction perpendicular to the receiving surfaces 34, 36) is constrained by the receiving surfaces 34, 36, and the guided portion 30 moves between the upper receiving surface 36 and the lower receiving surface 34. Move forward along the planes 34, 36 between them. Since the guided portion 30 is in contact with the lower receiving surface 34, the rear end portion of the seat portion 2 does not sink. On the other hand, since the guided portion 30 is received by the upper receiving surface 36, the rear end portion of the seat portion 2 is not swung up, and the front side of the seat portion 2 is swung up with the guided portion 30 as a fulcrum. 2 and the arm 21 rotate relatively around the rotating shaft 20. Since the rear end portion of the seat portion 2 is not swung up, the rear end portion of the seat portion 2 does not hit the lower end of the backrest 3, and the movement of the seat portion 2 is not interfered by the backrest 3. Here, when the guided portion 30 is attached before the rearmost end of the seat portion 2, when the front side of the seat portion 2 is swung up with the guided portion 30 as a fulcrum, The last end sinks slightly. However, since the receiving surfaces 34 and 36 are inclined so as to climb forward, the guided portion 30 moves forward along the receiving surfaces 34 and 36, and the rear end of the seat portion 2 slightly rises. Therefore, the sinking of the rearmost end of the seat portion 2 accompanying the rising of the seat portion 2 is offset.

  Subsequently, when the arm 21 is swung up with the rotating shaft 22 as a fulcrum by the load of the torsion spring 25, the engaging convex portion 26 engages with the engaging concave portion 10a (FIGS. 4 and 6). When the engaging convex portion 26 is engaged with the engaging concave portion 10 a, the guided portion 30 is located closer to the front end of the upper receiving surface 36.

  Subsequently, when the arm 21 rotates about the rotation shaft 22 by the load of the torsion spring 25, the guided portion 30 is separated from the front end of the upper receiving surface 36, and the guided portion 30 is released from the guide 31. As a result, the arm 21 continues to rotate about the rotation shaft 22 by the load of the torsion spring 25, so that the guided portion 30 moves away from the lower receiving surface 34. Thus, when the arm 21 is tilted forward, the seat portion 2 pivots forward about the rotation shaft 22 (FIG. 5). At this time, since the engaging convex portion 26 engages with the engaging concave portion 10a and the protruding end portion of the arm 21 is received by the elastic stopper 10, the relative rotation of the arm 21 and the seat portion 2 is stopped, With the angle of the seat 2 with respect to the arm 21 kept constant, the seat 2 turns forward. When the seat part 2 is turned forward, the seat part 2 is in a standing state with its front end part facing down.

Thereafter, the backrest 3 is laid down with its lower end as a fulcrum.
Thus, the vehicle seat device 1 can be stored.

  When the vehicle seat device 1 is used as a seat, first, the backrest 3 is raised up with its lower end portion as a fulcrum. Subsequently, the seat 2 is turned backward against the load of the torsion spring 25. Then, the arm 21 is swung back with the rotating shaft 22 as a fulcrum. At this time, since the protruding end portion of the arm 21 is received by the elastic stopper 10, the seat portion 2 can be swung rearward while the angle of the seat portion 2 with respect to the arm 21 is kept constant.

  Since the angle of the seat portion 2 with respect to the arm 21 is kept constant, when the seat portion 2 is turned backward, the guided portion 30 reliably hits the front portion of the lower receiving surface 34. When the guided portion 30 comes into contact with the front portion of the lower receiving surface 34, the turning of the seat portion 2 is stopped, and the rotation of the arm 21 with the rotating shaft 22 as a fulcrum is also stopped.

Thereafter, when the seat 2 is pressed downward, the front side of the seat 2 is swung down with the guided portion 30 as a fulcrum, and the arm 21 is swung back with the rotating shaft 22 as a fulcrum. 21 rotates relatively around the rotation axis 20. At this time, the guided portion 30 moves rearward along the lower receiving surface 34 in contact with the lower receiving surface 34, and the guided portion 30 is inserted into the upper receiving surface 36 and the lower receiving surface 34 (see FIG. 4). When the guided portion 30 is inserted between the upper receiving surface 36 and the lower receiving surface 34, the vertical movement of the guided portion 30 (direction perpendicular to the receiving surfaces 34, 36) causes these receiving surfaces 34, It is restrained by 36.
Then, when the seat portion 2 is continuously pressed down, the guided portion 30 moves rearward along the receiving surfaces 34 and 36, and the front side of the seat portion 2 is swung down with the guided portion 30 as a fulcrum. In this way, the rear end portion of the seat portion 2 sinks under the lower end of the backrest 3. At this time, the elastic stopper 10 is elastically deformed, and the engaging convex portion 26 is detached from the engaging concave portion 10a.

Subsequently, when the seat portion 2 is pressed downward, the seat portion 2 is in the state shown in FIG. 3 and is locked by the lock mechanism.
By the above, the vehicle seat apparatus 1 can be assembled and the vehicle seat apparatus 1 can be used as a seat.

  As described above, according to the present embodiment, when the vehicle seat device 1 is stored, the front side of the seat portion 2 is swung up as shown in FIGS. Since it moves forward, it slips forward from the lower end of the backrest 2 from the rear end of the seat 2. Therefore, after that, when the seat part 2 turns forward, the rear end part of the seat part 2 and the lower end part of the backrest 2 do not interfere. Therefore, the operation of raising the seat portion 2 forward is facilitated.

  Further, since the rear end portion of the seat portion 2 does not interfere with the lower end portion of the backrest 2, the seat portion 2 is moved from the state of FIG. 3 to the state of FIG. 5 only by the load of the torsion spring 25. That is, the seat portion 2 can be raised as shown in FIG. 5 simply by performing an operation of unlocking the lock mechanism. Thus, the seat portion 2 can be easily raised without using a spring other than the torsion spring 25, so that the number of parts can be reduced.

  Further, when the rear end portion of the seat portion 2 is pulled out from the lower end of the backrest 3 to the front, the guided portion 30 is in contact with the lower receiving surface 34, so that the rear end portion of the seat portion 2 is lowered. It will not sink greatly. In particular, when the rear end portion of the seat portion 2 is pulled forward from below the lower end of the backrest 3, the rear end of the seat portion 2 climbs forward along the receiving surfaces 34 and 36. The sinking of the rearmost end of the seat portion 2 that accompanies the rising is offset. At this time, the rear end of the seat 2 rises up along the receiving surfaces 34 and 36 while the front side of the seat 2 rises, so that the rear end of the seat 2 and the lower end of the backrest 3 do not interfere with each other.

  When the rear end portion of the seat portion 2 is pulled forward from below the lower end of the backrest 3, there is no space below the rear end portion of the seat portion 2 because a large sinking of the rear end portion of the seat portion 2 does not occur. In any case, the rear end portion of the seat portion 2 can be pulled out from the lower end of the backrest 3 to the front. Therefore, when the vehicle seat device 1 is installed in a passenger compartment or the like, the degree of freedom of the size and design of the passenger compartment is improved.

The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.
For example, in each of the above-described embodiments, the case where the seat device according to the present invention is applied to a seat of an automobile has been described.

  In the above embodiment, the load of the torsion spring 25 is used to rotate the arm 21 counterclockwise with the rotation shaft 22 as a fulcrum as viewed in the direction shown in FIG. May be used to rotate the arm 21 counterclockwise. Similarly, the arm 21 may be rotated clockwise using a driving unit such as a motor instead of manually.

[Second Embodiment]
A second embodiment will be described with reference to FIG. FIG. 7 is a side view of the vehicle seat device 1 </ b> A according to the second embodiment. In addition, the same code | symbol is attached | subjected to the part which mutually respond | corresponds between 1 A of vehicle seat apparatuses of 1st Embodiment, and 1 A of vehicle seat apparatuses of 2nd Embodiment.

  In the vehicle seat device 1 of the first embodiment, the lower receiving surface 34 and the upper receiving surface 36 are provided in a straight line when viewed from the side, and the lower receiving surface 34 and the upper receiving surface 36 are inclined so as to climb forward. is doing. On the other hand, in 1 A of vehicle seat apparatuses of 2nd Embodiment, the lower receiving surface 34 and the upper receiving surface 36 are curving so that it may swell below. In other words, the rear side portion of the lower receiving surface 34 and the upper receiving surface 36 is slightly inclined so as to be lowered forward, and the front portion thereof is inclined so as to climb forward. Except for the lower receiving surface 34 and the upper receiving surface 36, portions corresponding to each other are similarly provided between the vehicle seat device 1 of the first embodiment and the vehicle seat device 1A of the second embodiment.

  Also in this embodiment, when the rear end portion of the seat portion 2 comes out from below the lower end of the backrest 3, the guided portion 30 is in contact with the lower receiving surface 34. Will not sink significantly below. Therefore, a large space is not required below the rear end portion of the seat portion 2.

  Further, since the rear portions of the lower receiving surface 34 and the upper receiving surface 36 are slightly inclined so as to be lowered forward, interference between the rear end portion of the seat portion 2 and the lower end of the backrest 3 is more efficiently performed. Can be suppressed.

[Third Embodiment]
A third embodiment will be described with reference to FIG. FIG. 8 is a perspective view of the vehicle seat device 1B according to the third embodiment. In addition, the same code | symbol is attached | subjected to the part which mutually respond | corresponds between the vehicle seat apparatus 1 of 1st Embodiment, and the vehicle seat apparatus 1B of 3rd Embodiment.

  In the vehicle seat device 1 of the first embodiment, the bracket 23 and the guide 31 are separate bodies. On the other hand, in the vehicle seat device 1B of the third embodiment, the bracket 23 and the guide 31 are integrated. That is, the fixing portion 32 of the guide 31 extends forward and is connected to the lower end portion of the bracket 23. Further, a leg portion 38 is connected to the rear portion of the lower receiving surface 34, the leg portion 38 hangs down from the rear end of the lower receiving surface 34, and a fixing portion 39 is provided at the lower end of the leg portion 38. Is fixed to the floor by bolts 40. Since the front part of the guide 31 is supported by the leg part 33 and the rear part of the guide 31 is supported by the leg part 38, the rear part of the seat part 2 in the state of lying down can be stably supported. Except for what has been described above, portions corresponding to each other are similarly provided between the vehicle seat device 1 of the first embodiment and the vehicle seat device 1B of the third embodiment. In the first embodiment, as in the third embodiment, the rear portion of the guide 31 may be supported by the leg portion 38, and the fixing portion 39 provided at the lower end of the leg portion 38 may be fixed by the bolt 40. .

[Fourth Embodiment]
A fourth embodiment will be described with reference to FIGS. FIG. 9 is a side view of the vehicle seat device 1 </ b> C according to the fourth embodiment. FIG. 10 is a perspective view showing the rear part of the seat part 2. In addition, the same code | symbol is attached | subjected to the part mutually corresponding between 1 C of vehicle seat apparatuses of 1st Embodiment, and 1C of vehicle seat apparatuses of 4th Embodiment.

  In the vehicle seat device 1 of the first embodiment, the guide 31 is formed by bending a belt-shaped metal plate. On the other hand, in the vehicle seat device 1C of the fourth embodiment, the guide 31 is formed by forming a long groove 41 in a metal plate. Specifically, the fixed plate 42 of the guide 31 is fixed on the floor, and the side plate 43 of the guide 31 is bent with respect to the fixed plate 42. The side plate 43 is provided below the backrest 3 so as to be parallel to the side surface of the seat portion 2. The long groove 41 is elongated in the front and rear direction and is provided on the side plate 43, and the front end portion of the long groove 41 opens at the front edge of the side plate 43. The lower edge of the long groove 41 becomes the lower receiving surface 34, and the upper edge of the long groove 41 becomes the upper receiving surface 36.

In the fourth embodiment, the lock mechanism 80 is provided at the rear portion of the guide 31. The lock mechanism 80 will be specifically described. A rotating shaft 81 is attached to the side plate 43 behind the long groove 41. The rotation shaft 81 is parallel to the left-right direction. A base end portion of the arm 82 is connected to the side plate 43 by a rotation shaft 81, and the arm 82 is pivotally supported by the rotation shaft 81. The arm 82 extends forward from the rotary shaft 81. A claw 83 protrudes downward from the tip of the arm 82. A torsion spring 85 is wound around the rotary shaft 81, one end of the torsion spring 85 is hung on the arm 82, and the other end of the torsion spring 85 is hung on the fixed plate 42. The torsion spring 85 urges the arm 82 in the counterclockwise direction when viewed in the direction shown in FIG. When the torsion spring 85 is in a natural state, the arm 82 is parallel to the long groove 41, the vertical position of the claw 83 is between the lower receiving surface 34 and the upper receiving surface 36, and the inclined surface 84 is diagonally below the front. It is suitable. One end of the cable 86 is connected to the arm 82, the other end of the cable 86 is connected to the operation unit, and a midway part of the cable 86 is supported behind the arm 82 by the support 87. The operation unit may be installed anywhere in the vehicle, and the length and the routing route of the cable 86 may be changed according to the installation position of the operation unit.
Except for what has been described above, portions corresponding to each other between the vehicle seat device 1 of the first embodiment and the vehicle seat device 1C of the fourth embodiment are similarly provided. In addition, you may attach this locking mechanism 80 to the rear part of the guide 31 in 1st-3rd embodiment.

An operation related to locking / releasing of the locking mechanism 80 will be described.
In a state where the arm 21 falls back and the seat portion 2 falls back, the guided portion 30 is engaged with the claw 83 behind the claw 83 while being inserted into the long groove 41. This is the locked state. On the other hand, when the operation unit is operated, the arm 82 is swung up around the rotation shaft 81 by the cable 86, and the claw 83 moves above the upper receiving surface 36. Then, the lock is released. Then, when the operation portion is released in a state where the guided portion 30 has moved before the claw 83, the arm 82 is swung down by the torsion spring 85, and the claw 83 is located between the upper receiving surface 36 and the lower receiving surface 34. Located in.
On the other hand, when the guided portion 30 moves rearward from the front of the claw 83 along the upper receiving surface 36 and the lower receiving surface 34, the guided portion 30 comes into contact with the inclined surface 84 of the claw 83. Further, when the guided portion 30 moves backward, the inclined surface 84 is inclined, so that the claw 83 is pushed up by the guided portion 30 and the arm 82 is swung up against the load of the torsion spring 85. When the guided portion 30 is positioned behind the claw 83, the arm 82 is swung down by the load of the torsion spring 85, and the guided portion 30 and the claw 83 are locked to be in a locked state.

[Fifth Embodiment]
A fifth embodiment will be described with reference to FIGS. FIG. 11 is a perspective view of a vehicle seat device 1D according to the fifth embodiment. FIG. 12 is a side view of the rear portion of the seat portion 2. 13 is a cross-sectional view taken along the line XIII-XIII shown in FIG. In addition, the same code | symbol is attached | subjected to the part which mutually respond | corresponds between the vehicle seat apparatus 1 of 1st Embodiment, and the vehicle seat apparatus 1D of 5th Embodiment.

  In the vehicle seat device 1 according to the first embodiment, the guide 31 is attached to the floor, and the guided portion 30 is attached to the seat portion 2. On the other hand, in the vehicle seat device 1D of the fifth embodiment, the guide 31 and the guided portion 30 are not provided. Instead, the clamping part 131 is attached to the rear side surface of the seat part 2, and the support part 130 clamped in the vertical direction by the clamping part 131 is fixed to the floor 99. Other than that, portions corresponding to each other between the vehicle seat device 1 of the first embodiment and the vehicle seat device 1D of the fifth embodiment are the guide 31, the guided portion 30, the clamping portion 131, and the support portion. Except for 130, it is provided similarly.

Hereinafter, the support part 130 and the clamping part 131 will be specifically described.
The support part 130 is integrated with the bracket 23. That is, the lower portion 23a of the bracket 23 is fixed to the floor 99 by the bolt 24, the lower portion 23a extends rearward, and the lower end of the support portion 130 is joined to the rear portion of the lower portion 23a of the bracket 23 by welding or the like. The rear portion of the lower portion 23 a of the bracket 23 is fixed to the floor 99 with bolts 137.

  The support part 130 is an L-shaped rod. That is, the support portion 130 is provided in a state of standing on the rear portion of the lower portion 23a of the bracket 23 below the backrest 3, and the upper end portion of the support portion 130 is bent toward the opposite side.

  The clamping unit 131 includes a lower receiving surface 134, a stopper 135, and an upper receiving surface 136. The upper receiving surface 136 is a surface facing downward, and is provided on the rear side surface of the seat portion 2. The upper receiving surface 136 extends forward from the rear end of the seat portion 2. The lower receiving surface 134 is a surface facing upward, and is provided on the rear side surface of the seat portion 2. The lower receiving surface 134 faces the upper receiving surface 136 below the upper receiving surface 136, and the lower receiving surface 134 and the upper receiving surface 136 are provided in parallel to each other. The lateral sides of the lower receiving surface 134 and the upper receiving surface 136 are open, and the support portion 130 is inserted between the lower receiving surface 134 and the upper receiving surface 136 from the side. A stopper 135 is connected between the front end of the lower receiving surface 134 and the front end of the upper receiving surface 136. Further, the longitudinal length of the lower receiving surface 134 is shorter than the longitudinal length of the upper receiving surface 136, the upper receiving surface 136 extends rearward from the rear end of the lower receiving surface 134, and the rear end of the upper receiving surface 136 is the lower receiving surface. It is located in front of the front end of the surface 134. In addition, the support part 130 and the clamping part 131 are provided in left and right pairs.

  In a state where the arm 21 is swung back with the rotating shaft 22 as a fulcrum, the arm 21 falls back and the seat 2 falls back. In this state, the rotating shaft 20 is located behind the rotating shaft 22, and the support portion 130 is located behind the rotating shaft 20. In the state where the arm 21 is lying backward, the seat portion 2 is arranged on the floor, the seat surface 2a of the seat portion 2 faces upward, and the rear end portion of the seat portion 2 sinks under the lower end of the backrest 3. It is out. In this state, the sandwiching portion 131 is positioned rearward of the rotary shaft 20, the support portion 130 is inserted between the upper receiving surface 136 and the lower receiving surface 134, and is positioned at the front ends of the receiving surfaces 134 and 136. ing.

  In the state where the seat portion 2 is laid back, the support portion 130 and the upper receiving surface 136 prevent the portion of the seat portion 2 behind the rotating shaft 20 from sinking downward. 130 and the upper receiving surface 136 function as a downward movement restricting portion. On the other hand, since the support portion 130 and the lower receiving surface 134 restrict the swinging of the rear portion of the seat portion 2 relative to the rotating shaft 20, the support portion 130 and the lower receiving surface 134 serve as the upward movement restricting portion. Function. In addition, since the longitudinal length of the upper receiving surface 136 is longer than the longitudinal length of the lower receiving surface 134, the range in which the lower movement restricting portion restricts the sinking of the rear portion of the seat portion 2 is limited by the upper moving restricting portion. The rear swing is larger than the restricted range. Since the support part 130, the upper receiving surface 136, and the lower receiving surface 134 are provided in a position higher than the floor, they are provided in a position higher than the floor of the lower movement restricting part and the upper movement restricting part.

  When the lock mechanism is unlocked from such a state, the arm 21 rotates about the rotation shaft 22 by the load of the torsion spring 25 and swings up. At this time, since the lower receiving surface 134 is in contact with the support portion 130, the rear side of the seat portion 2 is not swung up, the front side of the seat portion 2 is swung up around the support portion 130, and the seat portion 2 and the arm 21 rotates relative to the rotation axis 20. Since the rear end portion of the seat portion 2 is not swung up, the rear end portion of the seat portion 2 does not hit the lower end of the backrest 3, and the movement of the seat portion 2 is not interfered by the backrest 3. Further, as the arm 21 is swung up, the lower receiving surface 134 and the upper receiving surface 136 are inclined so that the front sides of the lower receiving surface 134 and the upper receiving surface 136 are raised. Along with this, the seat 2 is pulled upward and diagonally forward by the arm 21, and moves downward and diagonally forward with the lower receiving surface 134 and the upper receiving surface 136 in contact with the supporting portion 130. It slides back obliquely downward relative to the surface 134 and the upper receiving surface 136. Therefore, the rear end portion of the seat portion 2 does not sink.

  Subsequently, when the arm 21 is swung up with the rotating shaft 22 as a fulcrum by the load of the torsion spring 25, the engaging convex portion 26 is engaged with the engaging concave portion 10a. When the engaging convex portion 26 is engaged with the engaging concave portion 10 a, the support portion 130 is positioned near the rear end of the lower receiving surface 134.

Subsequently, when the arm 21 rotates about the rotation shaft 22 by the load of the torsion spring 25, the rear end of the lower receiving surface 134 is separated forward from the support portion 130, and the support portion 130 is released from the clamping portion 131. Then, the arm 21 continues to rotate about the rotation shaft 22 by the load of the torsion spring 25, so that the upper receiving surface 136 moves away from the support portion 130. Thus, when the arm 21 is tilted forward, the seat portion 2 pivots forward about the rotation shaft 22. At this time, since the engaging convex portion 26 engages with the engaging concave portion 10a and the protruding end portion of the arm 21 is received by the elastic stopper 10, the relative rotation of the arm 21 and the seat portion 2 is stopped, With the angle of the seat 2 with respect to the arm 21 kept constant, the seat 2 turns forward. When the seat part 2 is turned forward, the seat part 2 is in a standing state with its front end part facing down.
Thereafter, the backrest 3 is laid down with its lower end as a fulcrum.
Thus, the vehicle seat device 1D can be stored.

  When the vehicle seat device 1D is used as a seat, first, the backrest 3 is raised up with its lower end as a fulcrum. Subsequently, against the load of the torsion spring 25, the seat portion 2 is turned backward, and the arm 21 is swung back with the rotary shaft 22 as a fulcrum. At this time, since the protruding end portion of the arm 21 is received by the elastic stopper 10, the angle of the seat portion 2 with respect to the arm 21 is kept constant.

  Subsequently, when the arm 21 is swung back with the rotating shaft 22 as a fulcrum, the support portion 130 contacts the rear portion of the upper receiving surface 136. Then, the upper receiving surface 136 moves downward and obliquely rearward with the support portion 130 in contact with the support portion 130, the support portion 130 slides upward and obliquely forward relative to the lower support surface 134, and the support portion 130 is moved upward. It is inserted into the receiving surface 36 and the lower receiving surface 34.

  Thereafter, when the seat portion 2 is pressed downward, the front side of the seat portion 2 is swung down with the support portion 130 as a fulcrum. Accordingly, the lower receiving surface 134 and the upper receiving surface 136 are inclined so that the front sides of the lower receiving surface 134 and the upper receiving surface 136 are lowered, and the seat portion 2 is pushed downward and obliquely rearward by the arm 21, and the lower receiving surface 134 and The upper receiving surface 136 is moved obliquely backward and downward with the support portion 130 in contact with the support portion 130, and the support portion 130 slides relatively upward and obliquely forward with respect to the lower receiving surface 134 and the upper receiving surface 136. In this way, the rear end portion of the seat portion 2 sinks under the lower end of the backrest 3. When the rear end portion of the seat portion 2 sinks under the lower end of the backrest 3, the elastic stopper 10 is elastically deformed, and the engaging convex portion 26 is detached from the engaging concave portion 10a.

When the support portion 130 is positioned at the front ends of the upper receiving surface 136 and the lower receiving surface 134, the lock is locked by the lock mechanism.
As described above, the vehicle seat device 1D can be assembled, and the vehicle seat device 1D can be used as a seat.
When the lock mechanism 80 in the fourth embodiment is adopted in this embodiment, the rotation shaft 81 is provided on the side surface of the seat portion 2 behind the stop portion 135, and the arm 82 is extended rearward. When the torsion spring 85 is in a natural state, the claw 83 may be positioned between the upper receiving surface 136 and the lower receiving surface 134.

DESCRIPTION OF SYMBOLS 1 Vehicle seat apparatus 2 Seat part 2a Seat surface 10 Elastic stopper 10a Engaging recessed part 20 Rotating shaft 21 Arm 22 Rotating shaft 25 Torsion spring 26 Engaging convex part 30 Guided part 31 Guide 34 Lower receiving surface 36 Upper receiving surface 99 Floor DESCRIPTION OF SYMBOLS 130 Support part 131 Clamping part 134 Lower receiving surface 136 Upper receiving surface

Claims (4)

An arm that is connected to the floor, and is rotatably provided from the state of falling back to the front centered on the first connecting part with the floor;
The arm is connected to the arm behind the position of the first connecting portion in a state where the arm is tilted backward, and is about the axis in the left-right direction around the second connecting portion with the arm. A seat provided rotatably,
A downward movement restricting portion for restricting a lower portion of the seat portion from sinking downward from a position of the second connecting portion in a state where the arm is tilted backward. Sheet device.   The apparatus further comprises an upward movement restricting portion for restricting the rear portion of the seat portion from swinging upward from the position of the second connecting portion in a state where the arm is tilted backward. Item 2. The sheet apparatus according to Item 1.   The sheet apparatus according to claim 2, wherein a range in which sinking is restricted by the lower movement restriction unit is larger than a range in which swinging is restricted by the upper movement restriction unit. Provided in the seat, further comprising a stopper separated from the arm when the arm is tilted back;
4. The seat device according to claim 1, wherein the stopper comes into contact with the arm when the arm is rotated from a state where the arm is tilted backward to a state where the arm is tilted forward. 5.

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