JP4604701B2 - Automotive seat - Google Patents

Description

  The present invention relates to an automobile seat.

  In general, when getting into an automobile, first, the door is opened when the vehicle is stopped, and then the user sits on a seat installed in the passenger compartment while entering the passenger compartment through the opening. At this time, it is necessary to avoid the components of the automobile, for example, the roof and the pillar, to enter the room and sit on the seat with the seating surface facing forward. Especially in the driver's seat, in addition to the roof and pillar, it is necessary to enter the room avoiding the instrument panel and steering wheel and sit on the seat, so the posture becomes unstable and the seating operation is difficult. When getting out of a car, the posture becomes unstable and it is difficult to get out of the car as when getting on.

  In order to enhance the convenience of getting on and off such an automobile, an automobile seat having a turning mechanism for horizontally turning the seat body so that the center line of the seat body faces the door opening direction when getting on and off is provided. Proposed. In this automobile seat, the seat body is locked with the center line of the seat body facing the front of the vehicle by a lock mechanism operated by an operation lever so that the seat body does not rotate normally. The lock is released and the seat body is rotated so that the center line of the seat body is directed toward the opening of the door, and locked at the position where the rotation is stopped.

  As shown in FIG. 28, convex portions 100A, 100B are attached to the seat side of the rotating mechanism, and convex portions 101A, 101B, 101C, 101D are installed on the vehicle body side of the rotating mechanism. Has been.

  Here, the convex portion 100A that is normally in contact with the convex portion 101A rotates around the outside of the convex portion 101B when rotating, contacts the convex portion 101C, and rotates the sheet main body. Is regulated. In addition, the convex portion 100B that has been in contact with the convex portion 101B during normal rotation passes through the vicinity of the inside of the convex portion 101C when rotating, and contacts the convex portion 101D to restrict the rotation of the sheet body. The

  With the above operation, when riding, the seat body is turned so that the center line of the seat body is directed toward the door opening, then the seat body is locked and seated. If the seat body is rotated and locked at this position, it is not necessary to get on the vehicle while avoiding the roof, pillar, instrument panel, and handle when boarding, and it is possible to get on with easy seating.

Also, when getting off the vehicle, unlock the seat while sitting on the seat, then turn the seat body while seated, and rotate it at any position where the center line of the seat body faces the door opening. If it stops and locks, and it makes it stand up after that, it will become unnecessary to get off so that a roof, a pillar, an instrument panel, and a handle may be avoided, and it will become possible to get off by easy operation (refer to patent documents 1). ).
JP 2002-274230 A

  In such an automobile seat, in order to improve convenience when getting on and off, the seat body may be rotated in the direction of the door opening (hereinafter referred to as abduction), and in the opposite direction, that is, the center of the vehicle body As described above, in Patent Document 1, the rotation range of the seat body is restricted to the range in which the center line of the seat body faces the door opening from the front, as described above. It has a structure that does not adduction. With such a structure, it is possible to prevent the seat body from being turned in an incorrect direction or turning more than necessary when the seat body is turned.

  By the way, in the case of a side collision, it is conceivable that an impact is applied to the door, and the door is deformed toward the passenger compartment to approach the passenger. At this time, if the seat body is turned inside using the interference between the door deformed to the vehicle interior side and the seat body, and the occupant seated on the seat body can be directed to the center of the vehicle body together with the seat body, the occupant is moved away from the door. It is possible to improve occupant protection performance.

  However, in the prior art, even a seat body having a turning mechanism is provided with an inversion mechanism for the seat body as described above, thus realizing such a function for improving passenger protection performance. There is a problem that you can not.

  The subject of this invention is providing the vehicle seat which can improve the passenger | crew protection performance while improving the convenience at the time of boarding / alighting.

In order to solve the above-described problems, the invention according to claim 1 is directed to a turning mechanism that rotatably supports a seat body of an automobile, and a front direction of the vehicle body when the seat body is turned by the turning mechanism. Normal position fixing means for fixing the seat main body at the normal position, and boarding / exiting position fixing means for fixing the seat main body at the boarding / exiting position facing the proximity door opening when the seat main body is rotated by the rotation mechanism; A rotation restricting means for restricting the rotation within a rotation range of the normal position and the getting on / off position when the seat body is rotated, and the normal position fixing means is provided on a lower surface of the seat body. A convex portion that is attached and can be brought into contact with and separated from the upper surface of the base member located below the seat body, and a first concave portion that is provided on the base member and engages with the convex portion at the normal position. And said squared Position fixing means, said protrusion, provided on said base member, said is composed of a second recess that engages with the convex portion at the landing position, and the times on the side of the seat body during side impact When the impact force of a predetermined value or more is received from the proximity door side of the seat body at a position in front of the center of movement, the projection to the first recess in the normal position fixing means is caused by the impact force The seat body is released by releasing the engagement of the seat body and releasing the fixed state of the seat body by the normal position fixing means, and releasing the restriction of the rotation of the seat body toward the vehicle body center side by the rotation restricting means. It is characterized in that it is allowed to rotate toward the center of the vehicle body.

  According to the above configuration, the seat body that is fixed at the normal position at the time of boarding is released and the seat body is rotated in the direction of the proximity door opening, and is rotated to the boarding / alighting position facing the proximity door opening. After that, the seat body is fixed and seated at that position. This eliminates the need to get on the vehicle while avoiding the roof, pillar, instrument panel, and steering wheel when boarding, and makes it possible to ride with an easy seating operation.

  After the seating is finished, the seated state is released and the fixed state at the boarding / exiting position is released, the seat body is rotated in the normal position direction, and fixed at the normal position.

  Also, when getting off the vehicle, release the fixed state at the normal position while sitting on the seat, rotate the seat body to the getting-on / off position facing the proximity door opening, and fix at that position. Get up from. As a result, it is not necessary to get off the vehicle so as to avoid the roof, the pillar, the instrument panel, and the handle, and it is possible to get off the vehicle with an easy operation.

  At this time, the rotation of the seat body is restricted so that the seat body rotates within the range of the normal position and the boarding / alighting position, and the seat body is not rotated to an unnecessary position.

  In addition, when a side impact of the seat body is received at the side of the seat body and ahead of the pivot axis of the seat, an impact force of a predetermined value or more is received from the proximity door side of the seat body. Releases the fixed state of the main body, releases the restriction of the rotation of the seat body so that the seat body faces the center of the vehicle body, rotates the seat body to the center side of the vehicle body, and removes the passenger seated on the seat body Turn to the center of the car. By this action, the passenger can be moved away from the proximity door at the time of a side collision, and the passenger protection performance can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, while improving the convenience at the time of boarding / alighting, the vehicle seat which can improve passenger | crew protection performance is realizable.

  Embodiments of the present invention will be described below with reference to the drawings.

  1 to 4 are configuration diagrams of the first embodiment.

  As shown in FIGS. 1 and 2, a seat body 1 composed of a seat cushion 1A, a seat back 1B, and a headrest 1C (not shown in FIG. 2, see FIG. 7) is a seat frame 1D located on the lower surface of the seat cushion 1A. It is fixed to. The rotation mechanism 2 disposed below the seat frame 1D and rotatably supporting the seat body 1 is composed of an upper member 2A and a lower member 2B, and the upper member 2A is at the center of the lower member 2B. It is freely rotatable around a rotation shaft 2C (not shown in FIGS. 1 and 2, see FIG. 8). The seat frame 1D is fixed to the upper member 2A. The lower member 2B is fixed to the base frame 3. The floor panel 50 of the vehicle body below the base frame 3 is provided with a pair of left and right fixing portions 50A and 50B (only the left side is shown in FIG. 1), and the slide rail 5 is attached to the fixing portions 50A and 50B. . The left and right end portions 3A and 3A of the base frame 3 are attached to slide rails 5 and 5 so as to be slidable in the front-rear direction of the vehicle body and locked at an arbitrary position.

  As shown in FIG. 1, an operation handle 6A that is operated when the seat body 1 is rotated when getting on and off is attached to an end 61 of the first lever 6B. The first lever 6B is pivoted to a support bearing 6D fixed to the seat frame 1D so that the left and right end portions 61 and 62 can move in the vertical direction around a support shaft 6C provided at the center thereof. It is supported freely. Here, the first lever 6B is attached so that the side on which the operation handle 6A is provided is positioned at the rear of the vehicle body.

  A biasing force is generated around the support shaft 6C in a direction opposite to the direction in which the support shaft rotates when the operation handle 6A is operated, so that the first lever 6B is pushed back in the direction opposite to the operation direction. A torsion spring 6E is attached (see FIG. 2).

  FIG. 3 is an enlarged view of a portion that regulates the rotation direction of the sheet.

As shown in FIG. 3, a second lever 7A is attached below the seat frame 1D. The second lever 7A has a seat frame so that the left and right end portions 71 and 72 can be moved in the vertical direction in conjunction with the operation of the operation handle 6A around a support shaft 7B provided at the center thereof. It is rotatably supported by a support bearing 7C fixed to the lower surface of the 1D. The second lever 7A has one end 71 positioned in the center direction of the seat body 1 and the other end 72 abutting against the lower surface of the end 62 positioned in front of the vehicle body of the first lever 6B. Is attached. Between the end 71 and the support shaft 7B on the upper surface of the second lever 7A, a spring 7D that presses the second lever 7A downward is attached between the lower surface of the seat frame 1D. At the end 71 of the second lever 7A, a convex holding member 7F having a convex 7E attached to the tip is attached so that the convex 7E faces downward and comes into contact with a regulating member 4 described later. Yes.

  As shown in FIG. 3, a regulating member 4 is attached to the upper surface of the base frame 3 so as to abut the convex portion 7 </ b> E and regulate the rotational position of the seat. The restricting member 4 is provided with a first recess 4A at a position where it comes into contact with the protrusion 7E when the sheet body 1 (not shown, see FIG. 1) is in the normal position. Further, a second recess 4B is provided at a position where the seat body 1 is in contact with the protrusion 7E when the seat body 1 is in the getting-on / off position. Further, a first flat portion 4C having a flat upper surface is provided between the first concave portion 4A and the second concave portion 4B. Furthermore, a protrusion 4E having an inclined surface 4D connected to the first recess 4A is provided on the opposite side of the flat portion 4C across the first recess 4A. Here, as shown in FIG. 6, the tip of the protrusion 4E is provided so as to be positioned at a height that exceeds the height L1 at which the lower surface of the convex portion 7E is positioned when the operation handle 6A is operated to the maximum. A second flat portion 4F having a flat surface whose upper surface is lower than the height of the protruding portion 4E is provided between the protruding portion 4E and the vehicle interior side end portion 4G of the regulating member 4. Further, the outer side of the second recessed portion 4B is adjacent to the outer end 4H of the restricting member 4 whose upper surface is located at a height exceeding the height L1.

  FIG. 4 is a view of the regulating member 4 shown in FIG. 3 as viewed from above.

  Of the above configuration, the convex portion 7E and the first concave portion 4A constitute the normal position fixing means, and the convex portion 7E and the second concave portion 4B constitute the getting on / off position fixing means.

  The restricting member 4 constitutes a rotation restricting means.

  With the above configuration, the following operations are performed to rotate the seat body 1 when getting on and off and fix the seat body 1 at the normal position or the getting-on / off position.

  As shown in FIGS. 5 and 6, when the operating handle 6A is pulled upward (in the direction of arrow B) against the biasing force of the torsion spring 6E, the end 62 of the lever 6B is moved downward (indicated by the arrow) about the support shaft 6C. (C direction). At this time, the end portion 62 comes into contact with the end portion 72 of the lever 7A and pushes the end portion 72 downward (in the direction of arrow C). Accordingly, as shown in FIG. 6, the end portion 71 of the lever 7A moves upward (in the direction of arrow D) against the urging force of the spring 7D around the support shaft 7B. By this action, the convex portion 7E engaged with the first concave portion 4A or the second concave portion 4B is lifted upward to be disengaged, and the seat body 1 (not shown, see FIG. 1) is rotated. It becomes possible to move.

  On the other hand, when the hand is released from the operation handle 6A, the lever 6B returns to the initial position by the biasing force of the torsion spring 6E, and the end portion 62 of the lever 6B moves upward. As a result, the pressing of the end portion 72 of the lever 7A is released, so that the end portion 71 of the lever 7A is pushed downward by the biasing force of the spring 7D, and the convex portion holding member 7F attached to the end portion 71 of the lever 7A. The convex part 7E provided at the tip of is pressed by the regulating member 4. At this time, when the sheet main body is in the normal position, the convex portion 7E and the first concave portion 4A are engaged, the sheet is fixed, and the sheet is not rotated. When the seat body is in the getting-on / off position, the convex portion 7E and the second concave portion 4B are engaged to fix the seat, and the seat is not rotated.

  Next, the effect | action of a present Example is demonstrated using FIGS.

  FIG. 7 is a diagram in which the configuration diagram of FIG. 2 is simplified for explanation of the operation, and the constituent members on the lower surface of the seat frame 1D show only the convex portion 7E and the spring 7D, and the others are omitted.

  FIG. 8 is a plan view of FIG. 7 as viewed from above, and FIG. 9 is a cross-sectional view showing a cross section of SA1-SA1 in FIG.

  In the normal seat body 1, the center line LC of the seat body 1 is arranged toward the front of the vehicle. At this time, as shown in FIG. 9, the convex portion 7E attached to the lower surface of the seat frame 1D is pressed against the regulating member 4 attached to the base frame 3 by the urging force of the spring 7D, and the convex portion 7E is regulated. The seat body 1 (not shown, see FIG. 7) is fixed so as not to rotate by engaging with the first recess 4A provided in the member 4.

  Next, when the operation handle 6A is pulled upward (see FIG. 5), the convex portion 7E is pulled upward by the above-described operation, and the engagement with the first concave portion 4A is released. As a result, the seat body 1 can turn around the turning shaft 2C of the turning mechanism 2 and the seat body 1 is turned outward so that the center line LC of the seat body 1 faces the door opening when getting on and off. Can do.

  FIG. 10 is a diagram showing the positional relationship of each part when the lock of the seat body 1 in the normal state is released and the door is abducted, and FIG. 11 is a diagram showing a cross section of SA2-SA2 in FIG.

  As shown in FIG. 11, the convex portion 7 </ b> E is located on the first flat portion 4 </ b> C of the regulating member 4 in this state. At this time, if the hand is released from the operation handle 6A, the convex portion 7E is pressed against the flat portion 4C by the spring 7D. On the other hand, if the state in which the operation handle 6A is operated to the maximum is maintained, the lower surface of the convex portion 7E is at the height L1 and is not in contact with the flat portion 4C. When the seat body 1 (not shown, see FIG. 10) is rotated by operating the operation handle 6A to the maximum, the friction between the lower surface of the convex portion 7E and the flat portion 4C does not occur. Thus, the seat body 1 can be rotated more smoothly than when the seat body 1 is rotated.

  FIG. 12 is a diagram showing the positional relationship of each part when the seat body 1 is rotated to the maximum in the direction of the door opening to be the position when getting on and off, and FIG. 13 is a diagram showing a cross section of SA3-SA3 in FIG. is there.

  As shown in FIG. 13, in this state, the convex portion 7E engages with the second concave portion 4B of the restricting member 4 and is pressed downward by the spring 7D, and at this position, the sheet body 1 (not shown, FIG. 12). Reference) is fixed.

  Even when the seat body 1 is returned from the boarding / alighting position to the normal position, the seat can be rotated by the same operation as described above.

  The seat rotation position when the seat body 1 is rotated to the maximum in the direction of the door opening only needs to be set at a position where the boarding / exiting operation at the time of boarding / exiting is easy, and is at the position shown in FIG. It is not limited.

  As described above, in the present embodiment, the seat body 1 is normally fixed at a position where the center line LC of the seat body 1 faces the front of the vehicle, and when the passenger gets on and off the seat body 1 by operating the operation handle 6A. It is possible to rotate the center line LC toward the door opening, and the center line LC is fixed at the position where the center line LC is rotated to the position when getting on and off. This makes it possible to improve convenience when getting on and off.

  As described above, the vehicle interior side of the second recess 4B is adjacent to the vehicle interior outer end 4H whose upper surface is located at a height exceeding the height L1, so that the seat body 1 is further moved away from the entry / exit position. Even if the outer part is to be rotated, the convex part 7E is brought into contact with the vehicle compartment outer end 4H and the rotation is restricted, and the outer part cannot be rotated. At this time, even if the seat main body 1 is to be rotated while operating the operation handle 6A to the maximum, the convex portion 7E cannot exceed the vehicle compartment outer end 4H where the upper surface is located at a height exceeding the height L1. Therefore, the rotation is restricted and cannot be rotated. By this action, when the seat body 1 is rotated from the normal position to the boarding / exiting position, it is possible to prevent the seat body 1 from overturning beyond the fixed position at the time of getting on / off. Therefore, convenience is further improved.

  Further, the vehicle interior side of the first recess 4A is adjacent to a protrusion 4E whose tip is positioned at a height exceeding the height L1. For this reason, even if the seat body 1 is further inwardly rotated from the normal position, the convex portion 7E is brought into contact with the protruding portion 4E, the rotation is restricted, and the inward rotation cannot be performed. At this time, even if the seat body 1 is to be turned inward while operating the operation handle 6A to the maximum, the convex portion 7E cannot rotate beyond the protruding portion 4E whose tip is located at a height exceeding the height L1. Is regulated and cannot be inverted. Due to this action, when the seat body 1 is returned from the boarding / alighting position to the normal position, it is possible to prevent the seat body 1 from excessively overturning beyond the normal lock position. Convenience is further improved.

  Next, the operation during a side collision will be described.

  FIG. 14 is a plan view showing a state in which a load is applied from the outside of the door 20 at the time of a side collision and the door 20 is deformed, and the door 20 is pressed forward from the rotation shaft 2C of the seat body 1. FIG. 14 is a diagram illustrating a cross section of SA4-SA4 in FIG. FIG. 16 shows a corresponding diagram of FIG. 15 without omitting the constituent members.

  As shown in FIG. 16, in this state, the convex portion 7E moves upward along the inclined surface 4D of the protruding portion 4E due to a load at the time of a side collision.

  FIG. 17 is a plan view showing a state in which the door 20 is further deformed by applying a load, and the door 20 further presses the side surface of the seat body 1, and FIG. 18 is a view showing a cross section of SA5-SA5 in FIG. (Door 20 is omitted).

  As shown in FIGS. 17 and 18, when the load applied to the sheet main body 1 is equal to or greater than a predetermined value, the lower surface of the projection 7E exceeds the tip of the projection 4E due to the load, and finally to the second flat portion 4F. Moving. By this action, the seat body 1 can be turned inward. Therefore, the occupant seated on the seat body 1 can be directed to the center of the vehicle body together with the seat body 1, and the occupant can be moved away from the door, so that the occupant protection performance can be improved. The inward rotation stops when the convex portion 7E comes into contact with the vehicle interior side end portion 4G of the regulating member 4.

  The restricting member 4 is not limited to the shape described above, and for example, a member as shown in FIG. 19 may be used.

  The restricting member 10 shown in FIG. 19 has the same constituent elements as the restricting member 4 along the locus of the arc drawn by the convex portion 7E when the sheet body 1 rotates around the rotation axis 2C of the rotation mechanism 2. have. That is, the first recessed portion 4A of the restricting member 4 corresponds to the first recessed portion 10A of the restricting member 10, and similarly, the second recessed portion 4B is the second recessed portion 10B, and the first flat portion 4C is the first recessed portion 4C. A protrusion 4E having a slope 4D on the flat part 10C, a protrusion 10E having a slope 10D (not shown), a second flat part 4F on the second flat part 10F, and a vehicle interior side end of the regulating member 4 4G corresponds to the vehicle interior side end portion 10G of the restriction member 10, and the vehicle interior outside end portion 4H of the restriction member 4 corresponds to the vehicle interior outside end portion 10H of the restriction member 10, respectively. The positional relationship in the vehicle width direction of each part of the regulating member 10 is equivalent to the positional relationship in the vehicle width direction of each part of the regulating member 4.

  Even if the restricting member 4 is replaced with the restricting member 10 having such a shape, the same effect as in the first embodiment can be obtained.

  Further, the convex portion 7E may be held by the convex portion holding member 7F having a support shaft parallel to the regulating member 4 so as to roll on the regulating member 4 and move. With such a configuration, when the sheet body 1 is rotated while the convex portion 7E is pressed against the first flat portion 4C of the regulating member 4, the convex portion 7E and the first flat portion 4C As compared with the case where the convex portion 7E is fixed to the convex portion holding member 7F, the sheet body 1 can be rotated more smoothly than the case where the frictional force generated during the period is weakened.

  FIG. 20 is a plan view of a second embodiment of the present invention, and FIG. 21 is a structural view of a slide portion of the seat body 1. In this embodiment, a slide member 30 is attached to the lower surface of the seat frame 1D, and a rail 31 that holds the slide member 30 slidably in the vehicle width direction is fixed to the base frame 3. Other structures are the same as those in the first embodiment.

  In this embodiment, as shown in FIG. 22, when getting on and off, the seat body 1 is slid in the vehicle opening direction in parallel to the door opening portion, and the convex portion 7E is engaged with the second concave portion 4B. By fixing 1, convenience when getting on and off can be improved.

  When a load of a predetermined value or more is applied to the seat body from the outside of the door at the side collision, as shown in FIG. 23, the lower surface of the convex portion 7E exceeds the tip of the protruding portion 4E, and finally the second It moves to the flat part 4F, and the seat body 1 slides toward the vehicle interior side from the normal position. By this action, it becomes possible to move the occupant away from the door at the time of a side collision, and the occupant protection performance can be improved.

  The restriction member 4 of this embodiment uses the same restriction member 4 as that of the first embodiment. Thus, by using the structure of the restricting member 4 as described in the first embodiment, the same restricting member is used in a vehicle seat having different means for moving (rotating, sliding, etc.) the seat body 1 when getting on and off. This has the advantage that the components can be shared.

  FIG. 24 is a front view of a third embodiment of the present invention, FIG. 25 is a schematic view thereof, and FIG. 26 is a plan view of FIG. In this embodiment, the seat frame 1D of the first embodiment is replaced with a seat frame 1E, and the other structure is the same as that of the first embodiment.

  In the present embodiment, the portion of the seat frame 1E near the door side that is in front of the rotation shaft 2C has a shape that is closer to the door 20 than in the first embodiment. By adopting such a shape, even when there is little deformation of the door 20 toward the vehicle interior side during a side collision, the door 20 easily comes into contact with the adjacent door side end of the seat frame 1E. Compared to the above, the seat body 1 can be turned inward at an earlier time after the start of the side collision. This action can further improve occupant protection performance.

  FIG. 27 shows a plan view of a schematic diagram of the fourth embodiment of the present invention. In this embodiment, the seat frame 1D of the second embodiment is replaced with a seat frame 1E, and the other structure is the same as that of the second embodiment.

  In the present embodiment, the proximity door side end portion of the seat frame 1E has a shape that is closer to the door 20 than in the second embodiment. By adopting such a shape, even when there is little deformation of the door 20 toward the vehicle interior side during a side collision, the door 20 easily comes into contact with the adjacent door side end of the seat frame 1E. The seat body 1 can be slid toward the center of the vehicle body at an earlier time after the start of the side collision. This action can further improve occupant protection performance.

It is the block diagram which looked at the 1st example of the present invention from the vehicle left side. It is the figure which looked at the 1st Example of this invention from the arrow A in FIG. It is an enlarged view of the part which controls the rotation direction of the sheet | seat of 1st Example of this invention. It is a figure which shows the control member of 1st Example of this invention. It is operation | movement explanatory drawing of the 1st Example of this invention. It is other operation | movement explanatory drawing of the 1st Example of this invention. It is the schematic of the block diagram of the 1st Example of this invention. It is a top view of the schematic of the 1st example of the present invention. It is SA1-SA1 sectional drawing in FIG. It is other operation | movement explanatory drawing of the 1st Example of this invention. It is SA2-SA2 sectional drawing in FIG. It is other operation | movement explanatory drawing of the 1st Example of this invention. It is SA3-SA3 sectional drawing in FIG. It is other operation | movement explanatory drawing of the 1st Example of this invention. It is SA4-SA4 sectional drawing in FIG. It is a block diagram of the 1st Example corresponding to FIG. It is other operation | movement explanatory drawing of the 1st Example of this invention. It is SA5-SA5 sectional drawing in FIG. It is a figure which shows the Example using another control member in the 1st Example of this invention. It is a top view of the 2nd example of the present invention. It is the block diagram which looked at the seat downward part of the 2nd Example of this invention from the vehicle left side. It is operation | movement explanatory drawing of the 2nd Example of this invention. It is other operation | movement explanatory drawing of the 2nd Example of this invention. It is a front view of the 3rd example of the present invention. It is the schematic of the front view of the 3rd Example of this invention. It is a top view of the 3rd example of the present invention. It is a top view of the 4th example of the present invention. It is a figure which shows the prior art of the vehicle seat rotation mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat main body 1A Seat cushion 1B Seat back 1C Headrest 1D Seat frame 1E Seat frame 2 Rotating mechanism 2A Upper member 2B Lower member 2C Rotating shaft 3 Base frame 4 Restricting member 4A 1st recessed part 4B 2nd recessed part 4C 2nd One flat portion 4D Inclined surface 4E Protruding portion 4F Second flat portion 4G Vehicle interior side end 4H Vehicle interior outer side end 5 Slide rail 6 First lever mechanism 6A Operation handle 6B First lever 6C Support shaft 6D Support bearing 6E Torsion spring 7 Second lever mechanism 7A Second lever 7B Support shaft 7C Support bearing 7D Spring 7E Convex portion 7F Convex portion holding member 10 Restriction member 10A First concave portion 10B Second concave portion 10C First flat portion 10D Slope 10E Protrusion 10F Second flat part 10G Car interior side edge 10H Outside the car Side end 20 Door 30 Slide member 31 Rail

Claims (8)

A rotation mechanism for rotatably supporting the seat body of the automobile;
Normal position fixing means for fixing the seat body at a normal position facing the front of the vehicle body when the seat body is rotated by the rotation mechanism;
Boarding position fixing means for fixing the sheet main body at the boarding / alighting position facing the proximity door opening when the seat body is rotated by the rotation mechanism;
And a rotation restricting means for restricting the rotation in the rotation range of the passenger position and the normal position when the seat body is rotated,
The normal position fixing means is provided on the bottom surface of the base member, and is provided on the base member, and is provided on the bottom surface of the base member. A first recess that engages the part,
The getting on / off position fixing means includes the convex part and a second concave part that is provided on the base member and engages with the convex part at the getting on / off position,
When an impact force of a predetermined value or more is received from the proximity door side of the seat body at a position on the side surface of the seat body and in front of the rotation center at the time of a side collision , the normal position is determined by the impact force. The engagement of the convex portion with the first concave portion in the fixing means is released, the fixed state of the seat main body by the normal position fixing means is released, and the vehicle body central side of the seat main body by the rotation restricting means An automotive seat characterized in that the rotation of the seat body is released to allow the seat body to rotate toward the center of the vehicle body. The rotation restricting means has a protrusion provided on the base member adjacent to the vehicle body center side of the first recess,
When an impact force of a predetermined value or more is received from the proximity door side of the seat body at a position on the side surface of the seat body and in front of the center of rotation during a side collision, the projecting portion is caused by the impact force. The automobile seat according to claim 1 , wherein the restriction of the rotation of the seat body toward the center of the vehicle body is released by getting over the protrusion . The protrusion has a slope from the tip to the first recess, and the protrusion is higher than a maximum height at which the lower surface of the protrusion is positioned when the protrusion is separated from the base member. The automobile seat according to claim 2, wherein a height of the tip is provided . A slide mechanism for slidably supporting the seat body of the automobile in the vehicle width direction;
Normal position fixing means for fixing the seat main body at a normal position where the seat main body is slid to the boarding position by the slide mechanism;
Boarding position fixing means for fixing the seat body at the boarding / exiting position where the seat body is slid a predetermined distance in the direction of the proximity door opening by the slide mechanism;
A slide restricting means for restricting the slide within the slide range of the normal position and the boarding / exiting position when the seat body is slid;
The normal position fixing means is provided on the bottom surface of the base member, and is provided on the base member, and is provided on the bottom surface of the base member. A first recess that engages the part,
The getting on / off position fixing means includes the convex part and a second concave part that is provided on the base member and engages with the convex part at the getting on / off position,
When an impact force of a predetermined value or more is applied to the side surface of the seat body from the adjacent door side of the seat body at the time of a side collision, the projecting force to the first recess portion in the normal position fixing means is caused by the impact force. The seat body is disengaged, the fixed state of the seat body by the normal position fixing means is released, and the restriction of the slide of the seat body toward the vehicle body center side by the slide restricting means is released. automotive seat you wherein allowing sliding in the vehicle body center side. The slide restricting means has a protrusion provided on the base member adjacent to the vehicle body center side of the first recess,
When an impact force of a predetermined value or more is applied to the side surface of the seat body from the proximity door side of the seat body at the time of a side collision, the projecting portion gets over the projection by the impact force, The automobile seat according to claim 4, wherein the restriction of sliding toward the center of the vehicle body is released . The protrusion has a slope from the tip to the first recess, and the protrusion is higher than a maximum height at which the lower surface of the protrusion is positioned when the protrusion is separated from the base member. The automobile seat according to claim 5, wherein a height of the tip is provided . The part close | similar to this proximity door from the said sheet | seat main body was provided in the position ahead of the said rotation center on the proximity | contact door side of the said sheet | seat main body, The Claim 1 characterized by the above-mentioned. automotive seat of. The automobile seat according to any one of claims 4 to 6 , further comprising a portion that is closer to the proximity door than the seat main body on the proximity door side of the seat main body .

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