JP5609622B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat. More specifically, the present invention relates to a vehicle seat in which both a seat back and a seat cushion are provided with a shield that covers the inner part or the outer part thereof.

  2. Description of the Related Art Conventionally, in a vehicle seat, there is a vehicle seat provided with a cover member that covers a gap formed in the same portion at the connecting portion between the seat back and the seat cushion on both sides (Patent Document 1). reference). The cover member is formed as a rubber fin (elastic lip portion) fixed to the seat cushion frame and extending in the width direction, and formed between the seat back frames arranged side by side in the width direction. The gap is covered. The rubber fin is provided in contact with the seat back frame, but due to its elasticity, the seat back frame is bent in accordance with the rotational movement so that the sliding friction against the seat back frame does not increase. It is the composition to do.

Japanese Patent Laid-Open No. 11-346859

  In the above vehicle seat, when a shield that covers the inner part or the outer part of both the seat back and the seat cushion is set, a gap is also formed between the two shields arranged in the height direction. It is desirable to have a configuration that can easily fill this gap. The present invention has been devised to solve the above problems, and the problem to be solved by the present invention is that a gap formed between the shields provided on both the seat back and the seat cushion is simplified. It is to be packed by a simple configuration.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
1st invention is the vehicle seat by which the shield which coat | covers these inner side parts or an outer side part was provided in both the seat back and the seat cushion. The shield provided on the seat back side and the shield provided on the seat cushion side are provided side by side in the height direction. At least one of the surfaces of the two shields facing each other in the height direction is formed with a projection that projects toward the other facing side and closes a gap formed between them.

  According to the first aspect of the present invention, the gap formed by the shields provided on both the seat back and the seat cushion being arranged side by side in the height direction faces each other in the height direction. It is packed by protrusions formed on at least one of the mating surfaces. Thus, the gap formed between both shields can be reduced with a simple configuration in which protrusions are formed only on at least one shield.

  According to a second invention, in the first invention described above, the surfaces of the shields facing each other in the height direction are arc surfaces on which the surface of the shield provided on the seat back side is drawn around the tilt center of the seat back In contrast, the surface of the shield provided on the seat cushion side has a maintenance surface that always maintains a relationship facing the arc surface even when the seat back is tilted. In addition, protrusions are formed on at least one of the arcuate surfaces or the maintenance surfaces facing each other.

  According to the second aspect of the invention, the shield on the seat cushion side has the circular arc surface on the seat back side so that the clearance between the shields can allow the seat back to tilt in the front-rear direction or to lean forward. By forming a projection on at least one of the arc surface or the maintaining surface that always maintains the relationship facing the arc surface, even if it is formed in a shape that is not facing the shape of the shield and looking back downward The seat back can be tilted without causing the protrusion to interfere with the shield.

  According to a third invention, in the second invention described above, the protrusions are formed on both the maintaining surface and the arc surface, and a plurality of protrusions are formed side by side in the circumferential direction on the arc surface.

  According to the third aspect of the present invention, the protrusion is formed on the maintenance surface side that does not follow the tilting of the seat back, so that even when the seat back tilts, the gap between the arc surface is kept constant. Can be kept in. Further, by forming a plurality of protrusions side by side in the circumferential direction on the arc surface side, it is possible to prevent the clearance between the shield surface on the seat cushion side from spreading due to the tilt of the seat back.

1 is a perspective view showing an external configuration of a vehicle seat of Example 1. FIG. It is a disassembled perspective view of a vehicle seat. It is a disassembled perspective view of the principal part of a sheet | seat frame | skeleton. FIG. 4 is a side view taken along the line IV in FIG. 2. FIG. 3 is a side view of the V view of FIG. 2. FIG. 4 is a side view of FIG. It is a side view of the state where the shoulder opening lever was operated and the seat back was pushed down to the forward tilt position. It is a side view of the state where the push-down lever was operated and the seat back was greatly overturned. It is a perspective view of a lower shield simple substance. It is a side view which shows the protrusion each provided in the upper side shield and the lower side shield.

  EMBODIMENT OF THE INVENTION Below, the form for implementing this invention is demonstrated using drawing.

  First, the configuration of the vehicle seat according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat of this embodiment includes a seat back 2 in which the seat body 1 is a backrest, a seat cushion 3 that is a seating portion, and a headrest 4 that is a head support. It is prepared for. The seat back 2, the seat cushion 3, and the headrest 4 are respectively provided with cushion pads 2B, 3B, 4B so as to cover the skeleton structure therein, and cloth covers so as to cover the entire surface. 2C, 3C, and 4C are attached.

  As shown in FIGS. 2 to 3, the seat back 2 includes a reclining device 5 in which the lower end portions of the left and right side frame portions of the back frame 2 </ b> A constituting the skeleton function as a rotation shaft device capable of stopping rotation. It is connected to the rear end portions of the left and right side frame portions of the cushion frame 3 </ b> A constituting the skeleton of the seat cushion 3. Each of the reclining devices 5 is normally held in a rotation-stopped state in which the backrest angle of the seat back 2 is fixed, and the release arm 5A connected to the operation shaft passed through the center portion is rotated. Thus, the rotation stop state is released.

  The operation of releasing the rotation-stopped state of each reclining device 5 includes a release lever 6 provided on the side of the seat cushion 3 on the entrance / exit door side (outside) and the shoulder portion on the entrance / exit door side (outside) of the seat back 2. It can be performed by operating the shoulder lever 7 provided on the head. With the above configuration, the seat back 2 is normally held in a state in which the backrest angle with respect to the seat cushion 3 is fixed, and the operation of the release lever 6 and the shoulder lever 7 is performed to fix the backrest angle. The state is solved. Here, each of the reclining devices 5 is connected by the connecting rod 5B so that the operation structure for locking and releasing each other is operated in synchronization, and the rotation stopping state of the reclining device 5 on one side is released. Accordingly, the rotation stop state on the other side is also released all at once.

  As shown in FIG. 4, the release lever 6 is rotatably connected to a side frame portion outside the cushion frame 3A by a connecting shaft 6B. The release lever 6 has a lifting type operation structure, and is normally held in a state of being locked at an initial position before the lifting operation by the urging force of the spring 6C hooked between the connecting shaft 6B. Has been. The release lever 6 has a resin operation part 6A assembled at its tip, and when the operator grasps the operation part 6A and pulls it up, the release lever 6 rotates to the side frame part outside the cushion frame 3A. The operation link 6D that is axially connected is pushed by the release lever 6, and the driven link 6E that connects the operation link 6D and the release arm 5A of the reclining device 5 is lowered downward to rotate the release arm 5A. It is supposed to be.

  The shoulder opening lever 7 is provided at the shoulder opening on the outer side of the back frame 2A, and is connected to the operation link 6D by a cable 7B (see FIGS. 4 to 5). The shoulder lever 7 is driven in the same manner as when the release lever 6 is operated by directly rotating the operation link 6D via the cable 7B by raising the lever to the front side of the seat. The release arm 5A is rotated downward via 6E.

  Here, as shown in FIGS. 2 to 3, the spring SP that applies an urging force in the direction in which the seat back 2 is always tilted forward and rotated to the connecting portion of both side portions of the seat back 2 and the seat cushion 3. Is hung. As a result, the seat back 2 is released to the front side by the urging force of the spring SP by being released from the fixed state of the backrest angle, and is brought down to the forward leaning position shown in FIG. It is designed to be locked. Here, as shown in FIGS. 2, 3, and 6, the seat back 2 is brought down from the upright posture to the forward leaning posture at the connecting portion between the seat back 2 and the seat cushion 3 on the inner side of the seat body 1. The release mechanism 7 </ b> C for releasing the slide lock state of the slider device 9 that slidably connects the seat body 1 to the vehicle floor is provided.

  As shown in FIG. 6, the release mechanism 7C is connected to an operation link 7C1 rotatably connected to the inner side surface of the cushion frame 3A, and a lock mechanism (not shown) of the operation link 7C1 and the slider device 9. Cable 7C2 connecting the release arm 9A. The release mechanism 7C has a protruding kick portion 2A1 (FIGS. 2 to 3) in which the operation link 7C1 is integrally formed with the back frame 2A by the movement of the seat back 2 being tilted from the upright position to the forward tilt position. In this case, the release arm 9A is rotated via the cable 7C2 to release the slide lock state of the slider device 9. By this releasing operation, the seat main body 1 can be slid to the front side of the vehicle in a compact posture with the seat back 2 tilted forward, and the space for getting on and off the seat on the rear side can be widened. Can be.

  Here, the slider device 9 includes a pair of left and right slide rail structures, and lock mechanisms (not shown) provided on the slide rail structures on each side are operated in synchronization with each other by the connecting rod 9B. In this way, the operation of releasing the slide lock state of the lock mechanism on one side releases the slide lock state on the other side all at once. Note that the slide lock state of the slider device 9 is performed by pulling up a slide lock release lever 9 </ b> C that is connected to a lock mechanism portion (not shown) on each side and extends to the lower front portion of the seat cushion 3. Can also be released.

  Then, the seat back 2 that is tilted down to the forward tilt position is moved to the forward tilt position by performing a push-down operation of the push lever 8 provided on the outer side portion of the seat cushion 3 as shown in FIG. The latching state at is released, and it is greatly tilted to the position where it is tilted into the upper surface portion of the seat cushion 3. As shown in FIGS. 2 to 3, the push-down lever 8 is rotatably connected to the rear edge portion of the outer side frame portion of the cushion frame 3 </ b> A by a connecting shaft 8 </ b> B. The release lever 6 has a push-down operation structure, and is normally locked at an initial position before the push-down operation by a biasing force of a spring (not shown) hooked between the release shaft 6 and the connecting shaft 8B. Is held. This push-down lever 8 has a resin operation portion 8A assembled at the tip, and the operator leans forward by operating the shoulder lever 7 when the operator pushes the operation portion 8A down. The seat back 2 in the state of being pushed down to the position and locked is further operated so as to be pushed down to the position of the upper surface portion of the seat cushion 3 (see FIG. 8).

  Specifically, as shown in FIG. 4, the push-down lever 8 is configured integrally with the above-described connecting shaft 8B, and the connecting shaft 8B rotates about the side frame portion outside the cushion frame 3A. Connected as possible. More specifically, the connecting shaft 8B is provided so as to penetrate the cushion frame 3A in the plate thickness direction, and the forward rotation of the seat back 2 is brought into contact with the end portion penetrating the inner side surface thereof. Thus, a locking arm (not shown) having a locking pin that can be locked at a forward tilt position is integrally coupled. In the state where the push-down lever 8 is locked at the initial position before the push-down operation by the biasing force of the spring (not shown) described above, the push-down lever 8 rotates in the direction opposite to the push-down direction (clockwise direction in FIG. 4). It is in a restricted state, and when the seat back 2 rotates forward and tilts in this state, a protruding locking portion (not shown) formed on the side frame portion outside the back frame 2A, The front and back rotation of the seat back 2 is locked at the forward tilt position shown in FIG.

  Then, after the seat back 2 is locked at the forward tilt position as described above, by operating the push lever 8, the locking pin (not shown) that locks the seat back 2 described above. (Not shown) is operated so as to be released from the locked state with the locking portion (not shown) of the seat back 2 together with the operation movement of the push lever 8, and the locked state of the seat back 2 is released. . As a result, the seat back 2 can be further tilted forward and rotated from the forward tilt position, and the seat back 2 is folded down to the position of the upper surface portion of the seat cushion 3 (see FIG. 8).

  Here, as shown in FIGS. 1 to 3, the seat cushion 3 is configured such that the outer portions of the left and right sides are covered from both outer sides by the outer shield 10 made of resin, and the inner sides of the left and right sides. The portion is configured to be covered from both inner sides by a resin inner shield 20. Each of the inner shields 20 is divided into an upper shield 21 attached to the inner part of the back frame 2A and a lower shield 22 attached to the inner part of the cushion frame 3A. On the other hand, the outer shields 10 are attached to the outer portions of the left and right side frame portions of the cushion frame 3A, respectively, and cover the outer portions of the cushion frame 3A and the upper left and right rear edges of the cushion frame 3A. And a portion covering the portion connected to the back frame 2 </ b> A by the reclining device 5.

  The upper shield 21 and the lower shield 22 of the inner shields 20 described above are provided side by side in the height direction. As shown in FIG. 10, the upper shield 21 has an outer peripheral surface on the lower edge side around the tilt center R of the seat back 2 in accordance with the shape of the outer peripheral surface on the lower edge side of both side frame portions of the back frame 2A. It is formed by a circular arc surface 21A that is curved in a drawn circular arc shape. The circular arc surface 21A is formed so as to protrude from the outer peripheral edge of the upper shield 21 in a flange shape, and a plate portion extending from the outer peripheral area of the reclining device 5 formed in a disk shape to the upper side of the back frame 2A. It is formed so as to surround almost the entire circumferential area leaving the area. The arcuate surface 21A is formed by a thin rubber fin 21C in the majority of the area on the front side and the lower side of the sheet. The rubber fin 21 </ b> C is rigid enough to keep its shape so that foreign matter does not enter the upper shield 21 at all times. When a pressing force is applied from the inside or outside by applying a component member provided on the side or the like, the force can be released by bending in the direction in which the force is applied.

  On the other hand, as shown in FIGS. 9 to 10, the lower shield 22 has a receiving surface 22 </ b> A whose outer peripheral surface facing the arc surface 21 </ b> A in the height direction is more gently curved than the arc surface 21 </ b> A. Is formed. The receiving surface 22A is formed so as to protrude from the outer peripheral edge of the lower shield 22 in a flange shape. A rising surface portion 22B that rises above the seat so as to face the upper shield 21 in the width direction is formed on the outer edge portion of the receiving surface 22A. The rising surface portion 22B is interposed between the upper shield 21 and the side frame portion of the cushion frame 3A so as to function as a gap between them. Due to the relationship between the arc surface 21A of the upper shield 21 and the receiving surface 22A of the lower shield 22, the seat back 2 can be seen from the front side of the seat when the seat back 2 is standing between the arc surface 21A and the receiving surface 22A. A gap AC is formed on the near side and gradually narrowing toward the far side. This gap AC is necessary so that the upper shield 21 attached to the side of the seat back 2 that tilts does not interfere with the lower shield 22 that is the fixed side. Since the entry of foreign matter from the front side of the seat is caused, it is desirable to set it so as to be as narrow as possible.

  Here, the receiving surface 22A of the lower shield 22 described above is formed with an escape hole 22A3 at the center in the front-rear direction so as to avoid interference with the lower edge of the upper shield 21. Even if a position change occurs in which the rear edge surface of the receiving surface 22A formed on the front side of the relief hole 22A3 causes the seat back 2 to collapse from the seating use position to the position, the arc is always It is formed as a maintenance surface 22A1 (see FIG. 10) that continues to maintain a positional relationship facing any part of the surface 21A in the height direction. The surface on the front side of the maintenance surface 22A1 is a normal surface 21B that extends upward from the arcuate surface 21A of the seat back 2 when the seat back 2 is greatly tilted to the position where the seat back 2 is tilted. It is formed as a retracting surface 22A2 that is in an opposing relationship. The evacuation surface 22A2 does not interfere with the normal surface 21B that moves closer to the lower side when the seat back 2 is largely tilted, so that a slight gap is formed between the retracted surface 22A2 and the normal surface 21B after the large tilt. Further, it is formed at a position retracted downward.

  Therefore, for example, providing a protrusion on the retracting surface 22A2 for closing the gap AC formed between the seat back 2 and the normal circular arc surface 21A where the seat back 2 stands up is when the seat back 2 is greatly overturned. In addition, the normal surface 21B of the seat back 2 and the projections are in an interference relationship, which is not preferable. Therefore, in this embodiment, a protrusion 22A1a that protrudes upward toward the arcuate surface 21A is formed not on the retracting surface 22A2 but on the maintaining surface 22A1 that continues to maintain the relationship facing the arcuate surface 21A. Has been. Accordingly, the protrusion 22A1a always maintains the relationship facing the arcuate surface 21A even when the seatback 2 is largely tilted. Therefore, the arcuate surface 21A does not hinder the large collapse of the seatback 2 by the protrusion 22A1a. The gap AC can be closed. The protrusion 22A1a is formed on the maintenance surface 22A1 so as to protrude into a shelf shape that is long in the lateral width direction (see FIG. 1).

  In addition, a guide protrusion 22B1 that protrudes in an arc shape so as to be applied to the inner peripheral portion of the rubber fin 21C of the upper shield 21 is also formed on the rising surface portion 22B of the lower shield 22. The guide protrusion 22B1 protrudes so as to be applied along the edge on the inner peripheral surface side of the rubber fin 21C described above, and supports the rubber fin 21C from the inner peripheral side so that the rubber fin 21C is in an initial shape position. It is a guide to hold. Further, as shown in FIGS. 9 to 10, the guide protrusion 22B1 is arranged on the lower edge of the guide protrusion 22B1 in the circumferential direction so as to be longer than the guide protrusion 22B1 and on the rising surface portion 22B. A protrusion claw 22B2 protruding from the center is formed. The protrusion claw 22B2 is disposed so as to face the protrusion 22A1a formed on the maintenance surface 22A1 and facing the height direction. The rubber fin 21C is sandwiched between the protrusion 22A1a and the rubber fin 21C. Is guided so as not to bend inward in the gap AC between the protrusions 22A1a.

  Thus, according to the vehicle seat of the present embodiment, the upper shield 21 attached to the seat back 2 and the lower shield 22 attached to the seat cushion 3 are provided side by side in the height direction. The gap AC to be formed is filled with the protrusion 22A1a formed on the maintenance surface 22A1 of the lower shield 22. In this way, the gap AC formed between the shields 21 and 22 can be reduced by a simple configuration in which the protrusion 22A1a is simply formed on the lower shield 22.

  Further, the protrusion 22A1a is formed on the maintenance surface 22A1 of the lower shield 22 that continues to maintain the relationship of being opposed to the arcuate surface 21A of the upper shield 21 even when the seat back 2 is greatly tilted, so that the protrusion 22A1a is opposed to the opposite surface. Thus, the seat back 2 can be tilted without interfering with the upper shield 21. In addition, the protrusion 22A1a is formed on the maintenance surface 22A1 on the lower shield 22 side that does not follow the tilt of the seat back 2, so that even if the seat back 2 tilts, it is between the arc surface 21A of the upper shield 21. The gap AC can be kept in a fixed state.

  As mentioned above, although the embodiment of the present invention has been described using one example, the present invention can be implemented in various forms in addition to the above example. For example, in the above embodiment, a projection 22A1a is formed between the upper shield 21 and the lower shield 22 of the inner shield 20 that covers the inner portions of the left and right sides of the seat body 1 so as to close the gap AC therebetween. Although illustrated, the outer shield is divided into an upper shield and a lower shield that are opposed to each other in the height direction, and a protrusion is provided on the facing surface on at least one side so as to close a gap between them. Also good. Further, the protrusions may be formed so as to protrude from at least one surface of the upper shield or the lower shield facing each other. By forming the protrusion so that it protrudes from the arc surface of the upper shield that follows the movement of the seat back, the protrusion maintains a relationship that does not interfere with the receiving surface of the lower shield even if the seat back is greatly tilted. In order to continue, the gap between both shields can be better packed so as not to hinder the large fall of the seat back. Further, by forming a plurality of protrusions on the circular arc surface of the upper shield and arranged in a circumferential direction, even if the tilt angle of the seat back changes as compared with the case where the protrusions are configured by one, The state in which the gap is effectively packed can be maintained so that the gap does not widen.

DESCRIPTION OF SYMBOLS 1 Seat body 2 Seat back 2A Back frame 2A1 Kick part 2B Pad 2C Cover 3 Seat cushion 3A Cushion frame 3B Pad 3C Cover 4 Headrest 4B Pad 4C Cover 5 Reclining device 5A Release arm 5B Connecting rod 6 Release lever 6A Operation part 6B Connection shaft 6C Spring 6D Operation link 6E Follow link 7 Shoulder lever 7B Cable 7C Release mechanism 7C1 Operation link 7C2 Cable 8 Push-down lever 8A Operation part 8B Connection shaft 9 Slider device 9A Release arm 9B Connection rod 9C Slide lock release lever 10 Outer shield 20 Inner Shield 21 Upper shield 21A Arc surface 21B Normal surface 21C Rubber fin 22 Lower shield 22A Receiving surface 22A1 Maintenance surface 22A1a Protrusion 22A2 Retraction Surface 22A3 relief holes 22B rising surface portion 22B1 projection 22B2 protruding claw SP spring AC gap R tilting center

Claims (1)

A vehicle seat in which a shield that covers the inner side or the outer side of both the seat back and the seat cushion is provided,
The shield provided on the seat back side and the shield provided on the seat cushion side are provided side by side in the height direction, and each surface facing each other in the height direction is provided on the seat back side. Whereas the surface has an arc surface drawn around the tilt center of the seat back, the surface of the seat cushion side is always the arc surface even if there is a position variation due to the tilt of the seat back. And a shape having a maintenance surface that maintains a state of being opposed to each other with a certain gap therebetween,
A vehicular seat characterized in that a projection that closes the gap is formed on the maintenance surface so as to project in a height direction .

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