JP6363415B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly, to a split and retractable vehicle seat provided with a seat back that can be divided into left and right parts and forwardly moved.

  Conventionally, as this type of vehicle seat, the lower part of the seat back divided into right and left is supported by a hinge mechanism so that it can be moved forward and backward, and when the seat back is raised, the outer portion of each seat back is secured by a lock mechanism. What is engaged with the striker of a vehicle body is known.

  For example, the split-foldable seat back described in Patent Document 1 is rotated by a side hinge disposed at the lower ends of the left and right outer portions and a center hinge disposed at the lower end of the inner portion (divided portion). It is supported so that it can move forward and left and right independently. A lock mechanism is provided on the upper side of the outer portions of the left and right seat backs. When the seat back is erected, the lock mechanism is engaged with a striker fixed to the side body.

  Further, in the center hinge structure described in the same document, a reinforcing bead is formed at the bent portion of the fixed hinge member. Thereby, the rigidity of the bent portion is enhanced, and damage and deformation of the center hinge and the seat back are suppressed.

  Further, for example, in Patent Document 2, in a seat back in which the outer side portion (left and right upper corners) of the seat back can be tilted independently on the left and right sides, a connecting means is provided at the center hinge portion. It is disclosed. The left and right hinge portions as connecting means described in the document allow the right and left seat backs to rise and fall at the normal time, and engage with each other when a load is input from the trunk room direction.

  Further, as another example of the prior art, for example, a split-foldable rear seat disclosed in Patent Document 3 is known. The rear seat described in the document includes a hook and a hook insertion part that can be engaged and disengaged by operating a lock knob as a connecting means for connecting the vicinity of the upper ends of the left and right seat backs.

JP 2008-6899 A (page 4-6, FIG. 1) JP 11-208336 A (page 4-5, FIG. 2) JP-A-8-216750 (page 2-3, FIG. 1)

  However, in the case of a split-foldable vehicle seat that engages and supports the outer portion of the seat back to the vehicle body as in the prior art described above, the left and right seat backs are deformed in a double-spread shape with respect to the load input from the rear. There was a problem that it was easy to do.

  FIG. 7 is a plan view schematically showing a state in which a load is applied from the rear to the split-foldable vehicle seat 201 of the prior art. Specifically, with reference to FIG. 7, each of the divided seat backs 2 is supported at both sides in the vehicle width direction, that is, the outer portion 11 and the inner portion 10 by the hinge mechanism 4. Only the outer portion 11 is supported by the engagement between the lock mechanism 5 and the striker 7. That is, each seat back 2 has a structure supported at three points as a whole, and the upper part of the inner portion 10 of each seat back 2 is not supported.

  Therefore, when a load (arrow F) acts from the rear of the seat back 2 (in the direction of the luggage compartment 9) toward the front, the left and right seat backs 2 have inner portions with the outer portion 11 side supported by the vehicle body as a fulcrum. The upper part on the 10 side is displaced so as to be rotated forward, and is deformed into a double-spread shape so that the interval between the left and right inner parts 10 is widened. The case where the load acts from the rear of the seat back 2 is, for example, the case where the load 50 of the luggage compartment 9 moves forward and collides against the seat back 2 and presses when the vehicle collides forward. .

  On the other hand, as a conventional technique for suppressing the deformation of the seat back, as described above, Patent Document 1 has a structure for increasing the rigidity of the center hinge portion, and Patent Document 2 has a connecting means for the center hinge portion. Is described. However, any of the conventional techniques increases the support strength of the center hinge portion of the seat back, that is, the lower portion of the seat back, and the effect of suppressing the deformation of the upper portion of the seat back is insufficient.

  Further, in the form of connecting the upper portions of the inner sides of the left and right seat backs by the connecting means that can be engaged and disengaged as in the prior art disclosed in Patent Document 3, the structure of the connecting means becomes complicated and the number of parts increases. However, there is a problem that the production cost increases. In addition, when the seat back is raised and lowered, an operation for releasing the connecting means is required, and there is a difficulty in operability.

  The present invention has been made in view of the above circumstances, and the object of the present invention is that it does not require a complicated mechanism, the seat back can be easily raised and lowered, and the seat back with respect to a load from the rear side can be easily obtained. An object of the present invention is to provide a split-foldable vehicle seat that is small in deformation and excellent in safety.

The vehicle seat of the present invention is disposed in front of the luggage compartment, a seat for a vehicle having a respective Mae倒closable seat back is divided into right and left, inside of one of the seat back is divided into the right and left One seat frame formed to form the skeleton of the one seat back, and the other seat frame formed inside the other seat back divided into the left and right to form the skeleton of the other seat back; , wherein the the one shoulder or near the region of the seat back, the engaging projection which is a part of the inner portion of the seat back facing the front SL other hand to project to the other seatback And the shoulder portion of the other seat back or a region near the shoulder portion has a plane parallel to the inner portion and a region facing the engagement convex portion in the height direction of the seat back. Concave shape Is, in the opposite region of the engagement recesses and the engagement projection, the engagement projection and the engagement recess and is engageable with uneven shapes by a load input from the luggage compartment is formed, The other seat frame positioned along the engagement receiving surface of the opposing region of the engaging recess includes the one seat frame positioned along the engaging surface of the opposing region of the engaging convex portion. disposed receiving bracket engaging the openings of the receiving bracket, it characterized that you have is larger than the other sheet frame to have spread.

  According to the vehicle seat of the present invention, the engagement convex portion protruding toward the other seat back side is formed in the vicinity of the shoulder portion of the inner side portion of one of the divided seat backs, and the inner side of the other seat back. In the vicinity of the shoulder portion, an engagement recess having an opposing region in the height direction of the engagement protrusion and the seat back is formed. The opposing region is formed with a concavo-convex shape in which the engaging convex portion and the engaging concave portion can engage with each other by a load input from the cargo compartment.

  As a result, when a load from the rear is applied, for example, when the load collides with the back of the seat back, the engagement convex portion and the engagement concave portion engage with each other when the left and right seat backs are displaced in the separating direction. The above separation can be suppressed. As a result, displacement of the seat back in the vehicle width direction can be suppressed, and at the same time, deformation toward the front, that is, the passenger side can be suppressed. Therefore, it is possible to suppress the deformation of the seat back when the vehicle body collides, and to increase the safety of the occupant.

  Further, the vehicle seat of the present invention can suppress the deformation amount of the seat back with respect to the load from the rear of the seat back without requiring a complicated mechanism such as a movable part or a power transmission mechanism. Further, the engagement surface of the opposing region of the engaging convex portion and the engagement receiving surface of the opposing region of the engaging concave portion are not engaged with each other in the normal state, and allow the left and right seat backs to be tilted. Therefore, it is possible to easily raise and lower the seat back without performing a special operation for engaging or releasing the engagement surface and the engagement receiving surface.

The uneven shape is a shape in which one seat frame located on the engagement surface engages with the other seat frame located on the engagement receiving surface. Thus, efficiently dispersed to transmit the load applied to the seat back to the right and left seat frames, increases the engagement force of the seat back, it is possible to further enhance the effect of suppressing the deformation of the seat back. As a result, safety at the time of a collision can be further enhanced.

It is a side view showing a schematic structure of a vehicular seat concerning an embodiment of the present invention. It is a rear view same as the above. FIG. 3 is a detailed view of a part A shown in FIG. It is a perspective view which shows the structure of a seat frame same as the above. 4A is a cross-sectional view taken along the line BB shown in FIG. 3 and FIG. 5B is a cross-sectional view schematically showing the deformation of the seat frame when a load is input (the same cross section as the cross section taken along the line BB). It is sectional drawing (cross section equivalent to the BB line cross section shown in FIG. 3) which shows the engaging part and engagement receiving part of the vehicle seat which concern on other embodiment of this invention. It is a top view which shows typically the state which the load acted on the division | segmentation folding type vehicle seat of a prior art from back.

  Hereinafter, the vehicle seat which concerns on embodiment of this invention is demonstrated in detail based on drawing.

  FIG. 1 is a side view showing a schematic structure of a vehicle seat 1 according to an embodiment of the present invention. The vehicle seat 1 is a rear seat of an automobile, and includes a seat cushion 3 on which an occupant sits and a seat back 2 that can be moved forward.

  The seat back 2 is rotatably supported by a hinge mechanism 4 whose lower part is fixed to a floor panel of the vehicle body. The seat back 2 functions as a backrest that supports the occupant's body in a standing state, and in the state in which the seatback 2 is tilted forward as indicated by a chain line in FIG. Function.

  A lock mechanism 5 for fixing the seat back 2 to the vehicle body in a standing state is provided on the outer portion 11 of the seat back 2, that is, the portion on the outer side in the vehicle width direction of each seat back 2 divided into left and right. .

  FIG. 2 is a rear view of the vehicle seat 1 as seen from the rear of the vehicle with the seat back 2 standing. As shown in FIG. 2, the lower portions of the outer portion 11 and the inner portion 10 (10A, 10B) are hinged so that the left and right seat backs 2 (2A, 2B) can be moved forward with the vicinity of the lower side as an axis. It is pivotally supported by mechanism 4.

  The lock mechanisms 5 provided on the outer portions 11 of the left and right seat backs 2 respectively engage with strikers 7 fixed to the left and right inner portions (for example, side bodies) of the vehicle body in a state where the seat back 2 is raised. .

  The inner portions 10 of the left and right seat backs 2 have surfaces that are substantially parallel to the front-rear direction of the vehicle, and face each other close to each other. In other words, the left inner portion 10A and the right inner portion 10B are spaced apart from each other by a predetermined distance so as to form a slight gap, or are disposed so that the surfaces of each other are in light contact with each other. Thereby, the operation of the left and right seat backs 2 can be independently raised and lowered in the front-rear direction of the vehicle without being restricted by the interference of the left and right inner portions 10.

  In the vicinity of the shoulder portion of the inner portion 10A of one divided (left side) seat back 2A, an engagement surface 12 facing the opposite side with respect to the other adjacent (right side) seat back 2B is formed.

  In the vicinity of the shoulder of the inner part 10B of the other (right side) seat back 2B, an engagement receiving surface 13 is formed facing the opposite side with respect to the one (left side) seat back 2A. The engagement surface 12 and the engagement receiving surface 13 are close to each other and face each other in the vehicle width direction in a state where both the left and right seat backs 2A and 2B are erected and the lock mechanism 5 is engaged with the striker 7.

  3 is a rear view showing the vicinity of the shoulder portion of the inner portion 10 of the seat back 2, and is a detailed view of a portion A shown in FIG. As shown in FIG. 3, from the shoulder portion of the inner portion 10A of one (left side) seat back 2A, a substantially L-shape projecting toward the other (right side) seat back 2B and extending downward. An engaging protrusion 14 having a shape is formed.

  A substantially U-shaped engagement recess 15 is formed in the shoulder of the inner portion 10B of the other (right) seat back 2B. The engagement recess 15 opens upward and surrounds the downward extension of the engagement protrusion 14. Yes. The engaging convex portion 14 and the engaging concave portion 15 are in a concave-convex relationship corresponding to each other, have an opposing region in the height direction, and the engaging convex portion 14 is engaged in a state where both the seat backs 2A and 2B are erected. It is inserted into the joint recess 15. Note that the facing region is the above-described opposing engaging surface 12 and engaging receiving surface 13 and the vicinity thereof.

  Here, the inner portions 10 of the left and right seat backs 2 are separated from each other by a predetermined distance so as to form a slight gap even in the engaging portion between the engaging convex portion 14 and the engaging concave portion 15, or each other. It is formed to the extent that the surface touches lightly. Thereby, even in the state where the engaging convex portion 14 is inserted into the engaging concave portion 15, the operations in the vehicle front-rear direction are not restricted with each other at normal times. Therefore, the left and right seat backs 2 can be easily and independently raised and lowered.

  And on the left side of the portion extending below the engaging convex portion 14 projecting from the shoulder of the left seat back 2A, that is, on the side facing the opposite side to the adjacent right seat back 2B The engagement surface 12 described above is formed. The engagement surface 12 is a surface substantially parallel to the inner portions 10 (see FIG. 4) of both seat backs 2A and 2B.

Further, the engagement receiving surface 13 described above is formed on the left side surface of the engagement recess 15 formed in the shoulder portion of the right seat back 2B, that is, on the side surface facing the opposite side to the adjacent left seat back 2A . Is formed. The engagement receiving surface 13 is a surface substantially parallel to the inner portions 10 (see FIG. 4) of both seat backs 2A and 2B.

  The engagement surface 12 and the engagement receiving surface 13 are formed substantially vertically and substantially parallel to the front-rear direction of the vehicle. Established. Therefore, in the normal state, the engagement surface 12 and the engagement receiving surface 13 are not engaged with each other, and the right and left seat backs 2 are allowed to rise and fall.

  On the other hand, when a load is input from the back side of the seat back 2, for example, when the load moves forward and presses the seat back 2 from the back side due to, for example, a vehicle colliding forward, the engagement surface 12 And the engagement receiving surface 13 are engaged with each other to suppress separation of the left and right seat backs 2A, 2B. Thereby, it can suppress that the seat back 2 deform | transforms into a folding door side shape in the passenger compartment side (front), and a passenger | crew's safety | security can be ensured at the time of a collision.

  FIG. 4 is a perspective view showing the structure of the seat frame 6 in the vicinity of the shoulder portion of the inner portion 10 of the seat back 2. As shown in FIG. 4, a seat frame 6 is disposed inside the seat back 2 as a strength member that forms a skeleton of the seat back 2. The seat frame 6 is made of, for example, a steel pipe material.

  A part of one (left side) seat frame 6A formed inside one (left side) seat back 2A extends to the inside of an engaging projection 14 protruding from the shoulder of the inner part 10A of the seat back 2A. It is extended.

  Specifically, the seat frame 6A extends substantially horizontally toward the other (right) seat back 2B in the vicinity of the shoulder portion of the inner portion 10B of the seat back 2A, and is bent downward to be engaged. Corresponding to the shape of the joint protrusion 14, it extends in a substantially L shape. The seat frame 6A is formed with an engagement portion 16 that extends along the engagement surface 12 and faces the opposite side of the other adjacent (right) seat back 2B.

  On the other hand, the other (right) seat frame 6B formed inside the other (right) seat back 2B corresponds to the shape of the engaging recess 15 in the vicinity of the shoulder of the inner portion 10B of the seat back 2B. Thus, it is formed in a substantially concave shape.

  Specifically, the seat frame 6B extending along the upper end of the seat back 2B is bent downward corresponding to the shape of the engaging recess 15 in the vicinity of the shoulder of the inner portion 10B. The seat frame 6B extending substantially vertically along the inner portion 10B of the seat back 2B extends upward and extends along the engagement receiving surface 13, and there is an adjacent one. An engagement receiving portion 17 facing the opposite side to the (left) seat back 2A is formed.

  A receiving bracket 18 having a substantially U-shaped cross section is fixed to a portion of the seat frame 6B where the engaging portion 16 is formed by welding or caulking. Thereby, the engaging part 16 and the engaging receiving part 17 are formed with uneven shapes corresponding to each other.

  FIG. 5A is a cross-sectional view taken along line BB shown in FIG. FIG. 5B is a cross-sectional view schematically showing deformation of the seat frame 6 at the time of load input, and represents the same cross section as FIG. 5A, that is, the cross section taken along line BB shown in FIG. .

  As shown in FIG. 5 (A), the seat back 2 includes a cushioning member 23 made of urethane foam material or the like disposed therein, and a skin material made of synthetic resin or leather covering the outer surface of the seat back 2. 22 and the above-described seat frame 6.

  The engaging portion 16 and the engaging receiving portion 17 formed by extending the seat frame 6 face each other in a line in a substantially straight line in the vehicle width direction on the cross-sectional view shown in FIG. In other words, the engaging portion 16 and the engaging receiving portion 17 are disposed so as to be opposed to each other in substantially the same plane parallel to the vehicle width direction in a state where the left and right seat backs 2A and 2B stand together. Is done.

  Thereby, when a load acts from the back of the seat back 2, the engaging portion 16 and the engagement receiving portion 17 are engaged, and the separation of the left and right seat backs 2A and 2B can be suppressed. Specifically, when a load is applied from the rear of the seat back 2, the engagement surface 12 and the engagement receiving surface 13 of the seat back 2 are in contact with each other and pressed, and the buffer member 23 provided in the seat back 2 is crushed. . Then, the engaging portion 16 and the engaging receiving portion 17 are engaged through the skin material 22 and the crushed buffer member 23.

  The engagement between the engagement portion 16 and the engagement receiving portion 17 suppresses the separation of the left and right seat backs 2A and 2B, and prevents the seat back 2 from being deformed in a double-sided manner toward the passenger compartment side (front). it can. As a result, safety at the time of a forward collision of the vehicle can be improved.

  In particular, by forming the engaging portion 16 and the engaging receiving portion 17 on the seat frame 6 that forms a skeleton inside the seat back 2, the load acting on the seat back 2 is applied to the left and right seat frames 6A and 6B. It is possible to efficiently distribute and transmit, increase the engagement force between the left and right seat backs 2A, 2B, and suppress deformation of the seat back 2.

  More specifically, on the seat frame 6 forming the skeleton of the seat back 2, a movable part of the hinge mechanism 4 (see FIG. 2) for supporting the seat back 2 and a lock mechanism 5 (see FIG. 2) are welded or bolted. It is fixed by etc. The seat frame 6 is coupled to and supported by the vehicle body via the hinge mechanism 4 and the lock mechanism 5.

  By forming the engaging portion 16 and the engaging receiving portion 17 on the seat frame 6, when a load acts on the seat back 2 from behind, the engaging portion 16 and the engaging receiving portion 17 are engaged. The left and right seat frames 6A and 6B are firmly coupled and integrated. The seat frame 6 integrally coupled is supported by the vehicle body at the lower portion by the hinge mechanism 4 and the outer portion 11 (see FIG. 2) by the lock mechanism 5.

  As a result, the force for pulling the left and right seat backs 2A and 2B apart and receiving them is received by the engaging portion 16 and the engaging receiving portion 17 and transmitted through the integrally connected seat frame 6, thereby the hinge mechanism. 4 and the lock mechanism 5 can be supported by the vehicle body.

  Further, since the seat frame 6 and the engaging portion 16 and the engaging receiving portion 17 formed therein are provided inside the seat back 2 and covered with the skin material 22, the engaging portion 16 and the engaging receiving portion are provided. It can prevent that the part 17 exposes outside and impairs the design property. Moreover, since it can prevent that a passenger | crew's body contacts the engaging part 16 or the engagement receiving part 17 directly, providing the engaging part 16 and the engagement receiving part 17 in the seat back 2 is safety. It is also preferable from the viewpoint.

As described above, the receiving bracket 18 is fixed to the portion of the seat frame 6A where the engaging portion 16 is formed by welding or caulking. The receiving bracket 18 is substantially U-shaped in cross section, and the length of the bottom part forming the recess is substantially the same as the outer diameter of the seat frame 6 forming the engaging part 16, and is bent and extends from the bottom part. The length of both side pieces is longer than the outer diameter of the seat frame 6 that forms the engaging portion 16. Further, the opening of the receiving bracket 18 opens toward the engagement receiving portion 17 that faces the engaging portion 16.

  As a result, the engaging portion 16 to which the receiving bracket 18 is fixed is formed with a concave shape with which the engaging receiving portion 17 can be engaged. That is, the seat frame 6A having a substantially circular cross section that constitutes the engagement receiving portion 17 has a convex shape, and the engaging portion 16 to which the receiving bracket 18 is fixed has a concave shape. The corrugated shapes corresponding to each other are formed.

  Then, as shown in FIG. 5B, the concavo-convex shapes of the engaging portion 16 and the engaging receiving portion 17 are engaged when a load is input to the seat back 2 from behind. That is, the engaging portion 16 and the engaging receiving portion 17 move relative to each other so that the convex shape of the engaging receiving portion 17 is engaged with the concave shape of the engaging portion 16 formed by the receiving bracket 18.

  Thus, by forming the concave and convex shapes corresponding to each other in the engaging portion 16 and the engaging receiving portion 17, the engaging portion 16 and the engaging receiving portion 17 are reliably engaged, and the vehicle longitudinal direction. It is possible to suppress deviation from As a result, the load acting on the seat back 2 can be efficiently transmitted to the seat frame 6, and safety at the time of a collision can be further enhanced.

Moreover, it is preferable that the receiving bracket 18 is formed so that the opening portion is expanded, that is, the opening length of the opening portion is longer than the length of the bottom portion. In other words, the opening of the receiving bracket 18 is formed larger than the outer diameter of the engagement receiving portion 17. Thus, to facilitate engagement between the engaging portion 16 and the engagement receiving portion 17, can be suppressed intends want unplugged both can increase the safety in collision or the like.

  In the embodiment described above, the receiving bracket 18 is fixed to the engaging portion 16, but the receiving bracket 18 may be provided in the engaging receiving portion 17 instead. Alternatively, a plurality of receiving brackets 18 may be provided and fixed at different heights. By providing a plurality of receiving brackets 18, the engaging portion 16 and the engaging receiving portion 17 can be more reliably engaged.

  Next, a vehicle seat 101 will be described in detail with reference to FIG. 6 as an example in which the embodiment is modified. 6 is a cross-sectional view showing the engaging portion 116 and the engaging receiving portion 117 of the vehicle seat 101, and shows a cross section corresponding to the cross section taken along line BB shown in FIG. In addition, the same code | symbol is attached | subjected about the component which show | plays the same or similar operation | movement and effect as already demonstrated embodiment, and the description is abbreviate | omitted.

  As shown in FIG. 6, in the vehicle seat 101 according to the present embodiment, brackets 118 and 119 that are formed in concave and convex shapes corresponding to each other are provided to constitute the engaging portion 116 and the engaging receiving portion 117. .

  The brackets 118 and 119 can be easily formed by, for example, press bending a steel plate. Further, the brackets 118 and 119 may be molded from a synthetic resin having sufficient strength.

  The brackets 118 and 119 can be fixed to a seat frame 6 (not shown) (see FIG. 5A) by welding, bolt fastening, or the like. As a modification, the shape of a part of the seat frame 6 itself may be formed into an uneven shape as shown in FIG.

  In this way, by disposing the engaging portion 116 and the engaging receiving portion 117 having uneven shapes corresponding to each other inside the seat back 2 along the engaging surface 12 and the engaging receiving surface 13, Thus, it is possible to suppress a deviation between the engagement surface 12 and the engagement receiving surface 13. Thereby, separation of the left and right seat backs 2A and 2B can be suppressed, and deformation of the seat back 2 can be suppressed.

  The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 1,101 Vehicle seat 2, 2A, 2B Seat back 3 Seat cushion 4 Hinge mechanism 5 Lock mechanism 6, 6A, 6B Seat frame 7 Striker 9 Cargo compartment 10, 10A, 10B Inner part 11 Outer part 12 Engagement surface 13 Engagement Intercepting surface 14 Engaging projection 15 Engaging recess 16, 116 Engaging portion 17, 117 Engaging receiving portion 18 Receiving bracket

Claims (5)

A vehicle seat that is disposed in front of the cargo compartment and has a seat back that can be moved forward and backward divided into left and right,
One seat frame formed inside the one seat back divided into the left and right, and forming a skeleton of the one seat back;
The other seat frame formed inside the other seat back divided into the left and right, and forming a skeleton of the other seat back, and
Wherein the one shoulder or near the region of the seat back, the engaging convex portion is a part of the inner portion of the seat back facing the front SL other hand to project to the other of the seat back side is formed,
An engagement recess having a surface parallel to the inner portion and a region facing the engagement protrusion in the height direction of the seat back is formed in the shoulder portion of the other seat back or in the vicinity thereof. ,
In the opposing region of the engaging convex portion and the engaging concave portion, an uneven shape is formed in which the engaging convex portion and the engaging concave portion can be engaged with each other by a load input from the cargo compartment ,
The other seat frame positioned along the engagement receiving surface of the opposing region of the engaging recess includes the one seat frame positioned along the engaging surface of the opposing region of the engaging convex portion. An engaging bracket is arranged,
The receiving opening of the bracket, a vehicle seat is characterized that you have is larger than the other sheet frame to have spread. A hinge mechanism that pivotally supports the seat back divided into the left and right sides so as to be able to move forward and backward with the vicinity of the lower side as an axis;
A lock mechanism for engaging each outer portion of the seat back divided into the left and right with strikers provided on the left and right inner portions of the vehicle body,
2. The vehicle seat according to claim 1, wherein the uneven shape is engaged by the load input in a state in which the seat back divided into the left and right is erected together and the lock mechanism is engaged with the striker. . The engaging convex part is a substantially L-shaped projecting from the shoulder part of the inner part of the one seat back toward the other seat back and extending downward.
The engaging recess is formed in a shoulder portion on the inner side of the other seat back and opens upward, and has a substantially U shape surrounding a downwardly extending portion of the engaging protrusion.
3. The vehicle seat according to claim 1, wherein the facing region is a region facing the engaging concave portion on the one seat back side of the extending portion of the engaging convex portion. . Wherein said engagement surface engages with the receiving surface, claim 1, wherein according to claim 3 that is the left and right seat back without engaging each other in a normal state is freely respectively Mae倒1 The vehicle seat according to Item. It said engagement surface and the engagement receiving surface is a vehicle seat according to any one of claims 1 to 4, characterized in that it consists of the skin material of the seat back.

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