JP6318014B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat capable of changing a seat layout by moving a seat cushion forward.

  2. Description of the Related Art Conventionally, in a rear seat of a passenger car or the like, a seat layout changing structure is known that expands a storage space at the rear of a vehicle by flipping the seat cushion forward and then tilting the seat back forward. In such a vehicle seat, after the rear end portion of the seat cushion is lifted, the seat cushion is moved downward in the front direction and the seat back is tilted forward (see Patent Document 1).

JP 2011-11665 A

  However, in the configuration of Patent Document 1, the rear end portion of the seat cushion is lifted, so that when the vehicle seat is stored, the rear end portion and the seat back that is tilted forward may interfere with each other.

  The present invention has been made in view of the above background, and provides a vehicle seat that suppresses interference between a seat cushion and a seat back when the vehicle seat is moved from the seating position to the storage position. With the goal.

  In order to achieve the above-described object, the vehicle seat of the present invention is seated and used with a seat cushion movable between a seating position at which the seat is used and a storage position in front of the seating position. A vehicle seat having a seat back movable between a seating position at a position where the seat is placed and a storage position tilted forward, wherein the seat cushion moves between the seating position and the storage position Sometimes, the rear end portion is configured to move below a horizontal plane passing through the upper end of the front end portion of the seat cushion at the seating position.

  According to such a configuration, since the movable range in the vertical direction of the rear end portion of the seat cushion becomes small, it is possible to suppress interference between the seat cushion and the seat back when moving from the seating position to the storage position. it can.

  When the vehicle seat includes a headrest provided on the seat back, the headrest contacts the seat cushion when the seat cushion and the seat back are positioned at the storage position, and the seat The back may be configured to contact the seat cushion.

  When only the seat back comes into contact with the seat cushion at the time of storage, the seat back and the seat cushion are relatively strongly hit, and the seat back contact mark is easily attached to the cushion material and the skin material of the seat cushion. However, according to the above-described configuration, it is possible to reduce contact marks on the seat cushion by contacting the seat cushion at two or more locations of the headrest and the seat back.

  In the configuration described above, the seat cushion has a convex portion protruding from the lower surface or a concave portion recessed from the lower surface, and the convex portion or the concave portion is provided in the vehicle body when the seat cushion is located at the seating position. In addition, the first engaging portion can be configured to be engageable.

  According to such a configuration, the seat cushion can be positioned at the seating position.

  In the configuration described above, the convex portion or the concave portion is configured to be engageable with a second engagement portion provided in the vehicle body when the seat cushion is located at the storage position. Can do.

  According to such a configuration, the seat cushion can be positioned at the storage position.

  According to the present invention, since the movable range in the vertical direction of the rear end portion of the seat cushion becomes small, it is possible to suppress interference between the seat cushion and the seat back when moving from the seating position to the storage position.

  According to the present invention, it is possible to reduce contact marks on the seat cushion by bringing it into contact with the seat cushion at two or more locations of the headrest and the seat back during storage.

  According to the present invention, the seat cushion can be positioned at the seating position, and the seat cushion can be prevented from tilting when moving from the seating position to the storage position.

  According to the present invention, the seat cushion can be positioned at the storage position.

1 is a perspective view of a vehicle seat as a vehicle seat according to an embodiment. It is a perspective view which shows the internal structure of the vehicle seat. It is the figure which looked at the internal structure of the seat cushion from the front. It is the figure which looked at the internal structure of the seat cushion from the top. FIG. 4 is a rear view of FIG. 3, and is an enlarged view of an extension portion. It is the figure which looked at the vehicle seat in a seating position from the left side, Comprising: It is the enlarged view (a) of a seat cushion part, and AA sectional drawing (b) of figure (a). It is the figure which looked at the vehicle seat from the left side, Comprising: It is a figure which shows a mode that a seat cushion and a seat back move ahead. It is the figure which looked at the vehicle seat in the storage position from the left side. It is the figure which looked at the internal structure of the seat cushion in the storing position from the front. It is a figure equivalent to Drawing 6 (b) in a modification.

  Next, an embodiment of the present invention will be described in detail with reference to the drawings as appropriate. As shown in FIG. 1, a vehicle seat 1 as an example of a vehicle seat is a three-seat seat used for a rear seat of an automobile, and includes a seat cushion 10, a seat back 20, and a headrest 30. Mainly prepared. The vehicle seat 1 is movable between a sitting position where the vehicle seat 1 is used by being seated and a storage position which is realized by moving the seat cushion 10 forward and tilting the seat back 20 into a space.

  The seat cushion 10 includes a left-side seat cushion 10A for two-seater and a right-side seat cushion 10B for one-seater, and the seat back 20 includes a left-side seat back 20A for two-seat, A right seat back 20B for one person.

  In the following description, front and rear, left and right, and top and bottom are based on a passenger sitting on the vehicle seat 1. Further, in the following description, unless otherwise specified, the seat cushion 10 and the seat back 20 will be described with respect to the left seat cushion 10A and the seat back 20A, and the right seat cushion 10B and the seat back 20B will be described with respect to the left side. Since it has substantially the same structure as the seat cushion 10A and the seat back 20A, description thereof is omitted.

  The seat cushion 10 includes a cushion body 11, and a first leg 100 and a second leg 110 that support the cushion body 11 so as to be rotatable with respect to the floor F of the vehicle body (for the right seat cushion 10B, a pair of legs 19). ). A pair of attachment members 12 for attaching the first leg 100 and the second leg 110 are fixed to the floor F with bolts 12A and the like.

  As shown in FIG. 2, the pair of attachment members 12 are arranged on the outer side (left side) in the left-right direction than the center tunnel F <b> 1 extending in the front-rear direction and formed in the center in the left-right direction of the floor F of the vehicle body.

  The seat cushion 10 includes a pipe 13 and a reinforcing wire 14 provided in the cushion body 11. Further, the seat cushion 10 has a pair of overhanging portions 15 (see FIG. 3) that project to the left and right outside of the pair of attachment members 12.

  The pipe 13 is provided at the front portion of the cushion body 11, and extends in the left-right direction over a range in which the pair of attachment members 12 and the center tunnel F1 are provided. The pipe 13 has a first protrusion 13A and a second protrusion 13B protruding downward, a first attachment part 13C for attaching the first leg 100, and a second attachment part 13D for attaching the second leg 110. And are provided.

  13 A of 1st protrusion parts are provided in the position corresponding between a pair of attachment members 12, and the 2nd protrusion part 13B is provided in the position facing the right end of the pipe 13, specifically the center tunnel F1. Yes. The center tunnel F1 is higher than the foot space portion F2 in front of the mounting member 12 by a height h, and the second protrusion 13B has a protrusion amount from the pipe 13 that is the height h. It is comprised so that it may become smaller than the protrusion amount of 13 A of protrusion parts (refer also FIG. 3).

  The first attachment portion 13 </ b> C is provided at the right end portion of the pipe 13, and the second attachment portion 13 </ b> D is provided at the left end portion of the pipe 13.

  The reinforcing wire 14 is made of a metal wire and is fixed to the pipe 13. The reinforcing wire 14 is provided so as to pass through the front side, the left and right sides, and the rear side of the pipe 13 along the outer shape of the cushion body 11.

  As shown in FIG. 3, of the pair of overhanging portions 15, the right overhanging portion 15 </ b> A (first leg 100 side) is in the same position as the center tunnel F <b> 1 in the left-right direction, and the seat cushion 10 is in the seating position. It is provided so as to pass over the center tunnel F1 when moving between the storage positions. The protruding portion 15A on the right side has a larger protruding amount than the protruding portion 15B on the left side (second leg 110 side). The right overhanging portion 15A has an overhanging amount corresponding to the width of one occupant.

  As shown in FIGS. 1 and 8, the seat back 20 is configured to be rotatable in the front-rear direction with the lower end portion as a fulcrum, and has a seat back main body 21. As shown in FIG. 2, a frame 22 and a rotating shaft 23 are provided in the seat back main body 21. The frame 22 is configured in a substantially U shape that opens downward. The rotating shaft 23 extends in the left-right direction, and the left and right lower ends of the frame 22 are fixed by welding or the like.

  The rotation shaft 23 is rotatably supported by attachment members 24 fixed to the floor F on the left and right sides of the seat back 20 so that the frame 22 can rotate with respect to the floor F. The rotating shaft 23 is provided with a spiral spring 25 that urges the seat back body 21 forward.

  As shown in FIG. 1, the headrest 30 includes a headrest body 31 and support pillars 32 (see FIG. 8) that support the headrest body 31 on the seat back 20. A total of three seat backs 20B are provided.

Next, the structure of the first leg 100 and the second leg 110 will be described.
As shown in FIG. 3, the first leg 100 is a leg that is disposed closer to the center tunnel F <b> 1 than the second leg 110 and supports the right side portion of the pipe 13. The first leg 100 is formed by bending a metal pipe, and has a support portion 101 extending from the lower end so as to approach the seat cushion 10 and an extension portion 102 extending from the upper end of the support portion 101 to the outer side in the left-right direction (right side). doing.

  The lower end of the support portion 101 is rotatably connected to the mounting member 12. As shown in FIG. 2, the support portion 101 is provided with a spiral spring 103 at the lower end, and is urged forward by the spiral spring 103.

  As shown in FIG. 3, the extending portion 102 is arranged in parallel with the pipe 13 and is located at the same position as the center tunnel F1 in the left-right direction so as to avoid the center tunnel F1, and the seat cushion 10 is in the seating position and the storage position. Are arranged so as to pass over the center tunnel F1. As shown in FIG. 4, the extension 102 is at least partially disposed between the pipe 13 and the reinforcing wire 14 on the front side of the pipe 13 in the front-rear direction. The second projecting portion 13 </ b> B described above is disposed on the outer side (right side) in the left-right direction of the right end of the extending portion 102.

  As shown in FIG. 5, the extending portion 102 has a first connecting portion 104 that is rotatably supported by the first mounting portion 13 </ b> C at the right end. The 1st connection part 104 consists of a member different from the extension part 102, and is being fixed to the right end of the extension part 102 by welding etc. As shown in FIG. The first connecting portion 104 extends from the right end of the extending portion 102 toward the rotation shaft 105 with the first mounting portion 13C (seat cushion 10).

  The 2nd leg 110 is provided with the 1st link 111 and the 2nd link 112 as shown to Fig.6 (a). The first link 111 is a leg that supports the left end portion of the pipe 13, the upper end is rotatably connected to the second attachment portion 13D of the pipe 13 (seat cushion 10) at the node N1, and the lower end is attached at the node N2. The member 12 is rotatably connected.

  The second link 112 forms a four-bar link together with the first link 111, the second attachment portion 13D, and the attachment member 12, and the seat cushion 10 with respect to the floor F is moved when the seat cushion 10 is moved between the seating position and the storage position. It is a member for prescribing | regulating the attitude | position of.

  The second link 112 is pivotally connected to the second mounting portion 13D at a position where the upper end is displaced from the node N1, specifically, a node N3 displaced upward and rearward of the node N1, and a lower end is connected to the node N2. It is rotatably connected to the mounting member 12 at a shifted position, specifically, at a node N4 shifted upward and rearward from the node N2. Further, the second link 112 is configured with a member thinner than the first link 111.

  As shown in FIG. 3, a second connecting portion 106 that connects the support portion 101 and the first link 111 is provided between the first leg 100 and the second leg 110. The second connecting portion 106 is disposed below the extending portion 102.

  As shown in FIG. 6A, the cushion body 11 is provided with a convex portion 11A protruding from the lower surface. The convex portion 11 </ b> A extends from the vicinity of the front end of the cushion body 11 to the rear end. A spacer 16 is provided between the floor F of the vehicle body and the seat cushion 10.

  The spacer 16 is a cushioning material made of foamed resin such as foamed beads, which forms part of the vehicle body together with the floor F. The spacer 16 is configured to fill a gap between the seat cushion 10 and the floor F. As shown in FIG. 6B, the spacer 16 is provided with a groove 16A as an example of a first engaging portion and a second engaging portion extending in the front-rear direction at a position corresponding to the convex portion 11A. The groove 16A is configured to engage with the convex portion 11A when the seat cushion 10 is located at the seating position and the storage position (see also FIG. 8).

The operation of the vehicle seat 1 configured as described above will be described.
When the operation unit (not shown) is operated from the sitting state shown in FIG. 6A to release the locked state of the seat cushion 10 to the floor F, the seat cushion 10 is moved by the action of the spiral spring 103 (see FIG. 2). The first leg 100 and the second leg 110 rotate around the lower end and begin to move forward. Similarly, when the locked state of the seat back 20 to the floor F is released, the seat back 20 rotates about the rotation shaft 23 by the action of the spiral spring 25 and starts to move forward.

  As shown in FIG. 7, the seat cushion 10 moves forward while the upper end is lifted by the rotation of the first leg 100 and the second leg 110. Here, due to the forward movement of the seat cushion 10, the attachment portions 13 </ b> C and 13 </ b> D rotate around the upper end of the first link 111, so that the rear end of the seat cushion 10 may jump upward. However, in the present embodiment, the second link 112 is connected to the second attachment portion 13D at the node N3 shifted to the rear of the first link 111 and the node N1, so that the rear portion of the second attachment portion 13D rotates upward. Since the movement is restricted, the jumping of the rear end portion of the seat cushion 10 is restricted.

  Then, as shown in FIG. 8, the seat cushion 10 moves forward and is disposed with the front end in contact with the floor F. In this manner, the seat cushion 10 moves between the seating position at which the seat cushion 10 is seated and used and the storage position in front of the seating position.

  Here, when the seat cushion 10 moves between the seating position and the storage position when the second link 112 restricts the jumping of the rear end portion, the seat cushion when the rear end portion is in the seating position is used. 10 moves below the horizontal plane H passing through the upper end of the front end. In other words, when the seat cushion 10 moves between the seating position and the storage position, the movement locus L of the rear end portion is located below the horizontal plane H.

  When the seat cushion 10 is in the storage position, the rear end of the convex portion 11A and the front end of the groove 16A are engaged. Thereby, the seat cushion 10 can be positioned in the left-right direction at the storage position.

  Further, the seat back 20 is tilted forward from the position of FIG. 6A, and the seat cushion in the storage position is provided at two locations, the headrest 30 portion and the upper end portion of the seat back 20, as shown in FIG. 10 is placed in contact with. In this way, the seat back 20 moves between the seating position where the seatback 20 is used while being seated and the storage position where the seatback 20 is tilted forward. Note that the seat cushion 10 and the seat back 20 may be moved from the seating position to the storage position at the same time when the lock is released, or may be moved at different timings.

  As shown in FIG. 9, when the seat cushion 10 is in the storage position, the first protrusion 13 </ b> A and the second protrusion 13 </ b> B are in contact with the floor F. More specifically, when the seat cushion 10 is in the storage position, the first protrusion 13A comes into contact with the foot space part F2, and the second protrusion 13B comes into contact with the center tunnel F1.

  On the other hand, after the seat back 20 is raised rearward manually from the storage position in FIG. 8 and moved to the seating position in FIG. 6A, the seat back 20 is locked to the floor F. Further, after the seat back 20 is moved, the seat cushion 10 is moved manually from the storage position in FIG. 8 to the rear and moved to the seating position in FIG. Lock to F. Thereby, the seat cushion 10 and the seat back 20 are fixed in a state in which an occupant can be seated. When the seat cushion 10 moves from the seating position to the storage position, the rear end portion moves along a movement locus L shown in FIG. Since the rear end of the seat cushion 10 moves without being raised so much, the position of the center of gravity of the seat cushion 10 does not rise so much when the seat cushion 10 is returned to the storage position. The seat cushion 10 can be returned to the seating position by force. Note that the seat cushion 10 may be configured to be interlocked with the operation of the seat back 20.

According to the above, the following effects can be obtained in the present embodiment.
Since the movement locus L of the rear end when the seat cushion 10 moves between the seating position and the storage position is located below the horizontal plane H, the vertical movable range of the rear end of the seat cushion 10 is reduced. be able to. Therefore, when the seat cushion 10 and the seat back 20 move from the seating position to the storage position, it is possible to prevent the seat cushion 10 and the seat back 20 from interfering with each other.

  Here, at the time of storage, when only the seat back is in contact with the seat cushion, the seat back and the seat cushion are relatively strongly hit, and the seat back contact mark is easily attached to the cushion material and the skin material of the seat cushion. However, in the present embodiment, since the seat cushion 10 is contacted at the two locations of the headrest 30 and the seat back 20, contact marks on the seat cushion 10 can be reduced.

  Further, since the convex portion 11A and the groove 16A are engaged at the seating position, the seat cushion 10 can be positioned at the seating position, and the seat cushion 10 is shifted to the left and right when moving from the seating position to the storage position. Can be suppressed.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to the said embodiment. About a concrete structure, it can change suitably in the range which does not deviate from the meaning of this invention.

  In the above embodiment, the seat cushion 10 has the convex portion 11A protruding from the lower surface, but the present invention is not limited to this, and as shown in FIG. 10, the seat cushion 10 has a concave portion 11B recessed from the lower surface. May be. In this case, the spacer 16 may be configured to have a spacer protrusion 16B that can be engaged with the recess 11B as the first engagement portion and the second engagement portion.

  In the embodiment, the groove 16A of the spacer 16 is exemplified as the first engaging portion and the second engaging portion. However, the present invention is not limited to this, and the first engaging portion and the second engaging portion are configured separately. May be.

  In the above embodiment, the convex portion 11A is provided on the seat cushion 10 and the groove 16A is provided on the spacer 16 (vehicle body). However, the present invention is not limited to this, and the convex portion 11A and the groove 16A are not provided. It may be a configuration.

  In the above-described embodiment, the seat cushion 10 is configured to come into contact with the upper end of the headrest 30 and the seat back 20 at the time of storage. However, the present invention is not limited to this, and only the seat back is used as the seat cushion. You may comprise so that it may contact.

  In the embodiment, the center tunnel F1 is formed on the floor F, but the present invention is not limited to this, and a protruding portion from another floor F such as a tire house may be formed. In this case, the extending portion of the first leg may be disposed so as to pass over the protruding portion when the seat cushion moves.

  In the above-described embodiment, at least a part of the extending portion 102 is disposed between the pipe 13 and the reinforcing wire 14 in the front-rear direction, but the present invention is not limited to this, and the pipe 13 and the reinforcing wire 14 It does not have to be arranged between them. In addition, at least a part of the extending portion may be disposed between the pipe and the reinforcing wire in the vertical direction. According to this, it can suppress that an extension part protrudes below the vehicle seat.

  In the said embodiment, although the 2nd protrusion part 13B was provided in the pipe 13, this invention is not limited to this, It is not necessary to provide a 2nd protrusion part, and it is 2nd in the member different from a pipe. A protrusion may be provided.

  In the embodiment, the first connecting portion 104 made of another member is provided in the extending portion 102. However, the present invention is not limited to this, and the first connecting portion is configured by bending the extending portion. May be.

  In the said embodiment, although the 2nd link 112 was provided in the 2nd leg 110, this invention is not limited to this, It is good also as a structure which provides the link member corresponded to a 2nd link in a 1st leg.

  In the said embodiment, although the 2nd connection part 106 was provided in the 1st leg 100 and the 2nd leg 110, this invention is not limited to this, It is not necessary to provide a 2nd connection part.

  In the said embodiment, although the vehicle seat 1 used with a motor vehicle was illustrated as a vehicle seat, this invention is not limited to this, For example, it uses with a rail vehicle, a ship, an aircraft, etc. It can also be applied to a sheet to be processed.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 10 Seat cushion 11A Convex part 13 Pipe 13B 2nd protrusion part 14 Reinforcement wire 16 Spacer 16A Groove 20 Seat back 30 Headrest 100 1st leg 101 Support part 102 Extension part 104 1st connection part 105 Rotating shaft 106 2nd connection part 110 2nd leg 111 1st link 112 2nd link F Floor F1 Center tunnel H Horizontal surface

Claims (8)

A seat cushion movable between a seating position at which the user is seated and used and a storage position in front of the seating position;
An attachment member fixed to the floor of the vehicle body provided separately from the seat cushion;
A seat back pivotally supported by the mounting member, the seat back being movable between a seating position at which the seat is seated and used and a stowed position tilted forward ;
A headrest provided on the seat back;
A vehicle seat comprising:
When the seat cushion and the seat back are positioned at the storage position, the headrest contacts the seat cushion, and the seat back contacts the seat cushion,
When the seat cushion moves between the seating position and the storage position, the rear end portion moves below a horizontal plane passing through the upper end of the front end portion of the seat cushion at the seating position. A vehicle seat characterized in that it is configured. A seat cushion that is movable between a seating position at which the user is seated and used and a storage position in front of the seating position; a seating position at which the user is seated and used; and a storage position that is tilted forward A vehicle seat having a seat back movable between and a headrest provided on the seat back ,
When the seat cushion and the seat back are positioned at the storage position, the headrest contacts the seat cushion, and the seat back contacts the seat cushion,
When the seat cushion moves between the seating position and the storage position, the rear end portion moves below a horizontal plane passing through the upper end of the front end portion of the seat cushion at the seating position. Configured ,
The vehicle seat according to claim 1 , wherein the front end of the headrest is positioned behind the front end of the seat cushion when positioned in the storage position . A seat cushion that is movable between a seating position at which the user is seated and used and a storage position in front of the seating position; a seating position at which the user is seated and used; and a storage position that is tilted forward A vehicle seat having a seat back movable between and a headrest provided on the seat back ,
When the seat cushion and the seat back are positioned at the storage position, the headrest contacts the seat cushion, and the seat back contacts the seat cushion,
When the seat cushion moves between the seating position and the storage position, the rear end portion moves below a horizontal plane passing through the upper end of the front end portion of the seat cushion at the seating position. Configured ,
The seat cushion has a convex portion protruding from the lower surface or a concave portion recessed from the lower surface,
The convex portion or the concave portion is provided so as to be engageable with a first engaging portion provided in a vehicle main body when the seat cushion is located at the seating position.
When the convex portion or the concave portion and the first engaging portion are engaged, a gap is formed between the lower end of the convex portion or the upper end of the concave portion and the first engaging portion. A feature vehicle seat. A seat cushion that is movable between a seating position at which the user is seated and used and a storage position in front of the seating position; a seating position at which the user is seated and used; and a storage position that is tilted forward A vehicle seat having a seat back movable between and a headrest provided on the seat back ,
When the seat cushion and the seat back are positioned at the storage position, the headrest contacts the seat cushion, and the seat back contacts the seat cushion,
When the seat cushion moves between the seating position and the storage position, the rear end portion moves below a horizontal plane passing through the upper end of the front end portion of the seat cushion at the seating position. Configured ,
The seat cushion has a convex portion protruding from the lower surface or a concave portion recessed from the lower surface,
The convex portion or the concave portion is provided so as to be engageable with a first engaging portion and a second engaging portion provided in the vehicle main body,
The convex portion or the concave portion includes a first portion extending in the front-rear direction and a second portion extending obliquely rearward and upward from the rear end of the first portion with respect to the first portion,
The first engagement portion extends in the front-rear direction,
The second engaging portion extends from the front end of the first engaging portion so as to incline forward and downward with respect to the first engaging portion,
When positioned in the seating position, the first portion engages the first engagement portion;
The vehicle seat, wherein the second portion engages with the second engaging portion when positioned in the storage position. A spacer provided between the seat cushion located at the seating position and the floor of the vehicle body;
5. The vehicle seat according to claim 4, wherein when the seat back is positioned at the storage position, the seat back faces the spacer without contacting the spacer and contacts the seat cushion. 6. The vehicle seat according to claim 5, wherein the first engagement portion and the second engagement portion are formed on the spacer. The seat back is rotatably supported on the floor,
The seat cushion has a cushion body and legs that support the cushion body so as to be rotatable with respect to the floor,
The leg includes a first link and a second link,
  The first link has an upper end rotatably connected to the cushion body at the first node, and a lower end rotatably connected to the floor at the second node.
  The second link is pivotally connected to the cushion body at a third node whose upper end is shifted upward and rearward from the first node, and whose lower end is a fourth node whose upper end is shifted upward and rearward from the second node. It is pivotally connected to the floor,
The vehicle according to claim 5 or 6, wherein when the spacer is located at the storage position, the spacer is located above the second node and below the pivot of the seat back. Sheet. The seat cushion has a protruding portion protruding downward,
The vehicle seat according to any one of claims 1 to 7, wherein the protruding portion is in contact with a floor of the vehicle main body when the protruding portion is located at the storage position.

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