JP5481802B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat, and more particularly, to a vehicle that can be slid to an enlarged area in front of a use area in order to perform an expansion of a cargo compartment or a walk-in function in addition to a use area for a passenger to sit on. Related to the sheet.

As this type of vehicle seat, for example, the technique disclosed in Patent Document 1 is already known. In this technique, a vehicle seat is composed of a seat cushion and a seat back. In addition to a use area for an occupant to sit on the seat cushion, the seat cushion and the seat back are extended by a slide mechanism. It can be slid to the storage area in front of the use area to perform the walk-in function.
JP 2005-22551 A

  However, when the above-described vehicle seat is locked in the storage area, the seat cushion is locked in a tip-up state in which the seat cushion is flipped up to the seat back side from the viewpoint of preventing the seating of the occupant. Therefore, when this vehicle seat is applied to, for example, a second seat of a vehicle, the second seat in which the passenger of the third seat is locked in the storage area slides to the use area (returns to the use area). In this case, first, the third seat occupant had to return the seat cushion in the tip-up state from the back side of the seat back of the second seat to a seatable state. Therefore, there has been a problem that the workability of the return is poor.

  The present invention is intended to solve such a problem, and its purpose is to easily release the lock even when the vehicle is locked in the storage area in the state accompanied by the occupant's seating prevention. It is an object to provide a vehicle seat.

The present invention is for achieving the above object, and is configured as follows.
According to the first aspect of the present invention, a seat cushion assembled to be slidable back and forth with respect to the vehicle floor, a seat back assembled to the seat cushion, and assembled to be able to fall forward with respect to the seat back. The seat cushion slide range is a vehicle seat that includes at least a use area for a passenger to sit on and a storage area in front of the use area. A first slide lock mechanism that can be locked at a desired slide position is provided. When the headrest is tilted forward, the first slide lock mechanism is switched from the unlocked state to the locked state, and from this state, the headrest is raised backward. And the first slide lock mechanism is unlocked from the locked state. And a second slide lock mechanism capable of locking the seat cushion to a desired slide position in the use region. The first slide lock mechanism has a plurality of engagement claws and is pivotally attached to the upper rail. The second slide lock mechanism includes a second hook having a plurality of engaging claws and pivotally attached to the upper rail. The lower rail includes a first hook in the storage area. A plurality of lower first holes that can penetrate the plurality of engaging claws of the hook are formed, and a plurality of lower second holes that can penetrate the plurality of engaging claws of the second hook are formed in the use region. The upper rail is formed with an upper first hole that can penetrate the plurality of engaging claws of the first hook and an upper second hole that can penetrate the plurality of engaging claws of the second hook. 2nd hole and 2nd upper The hole size between the lower first hole and the upper first hole is such that the engaging hooks of the first hook do not penetrate into the lower second hole and the upper second hole. The hole pitches of the plurality of lower first holes are set so that the plurality of engaging claws of the second hook do not penetrate the plurality of lower first holes. The lower second hole is set to be larger than the hole pitch, and the lower second hole, the lower first hole, the upper second hole, and the upper first hole are set to be located in the same straight line. The first slide lock mechanism is switched from the unlocked state to the locked state when the engaging claw of the first hook penetrates the upper first hole of the upper rail and the lower first hole of the lower rail. The second slide lock mechanism is not locked. The switching from the closed state to the locked state is performed when the engaging claw of the second hook passes through the upper second hole of the upper rail and also passes through the lower second hole of the lower rail. When the unlocking operation of the second slide lock mechanism is performed while the lock mechanism is in the locked state, the first slide lock mechanism is switched from the locked state to the unlocked state in conjunction with this operation. And
According to this configuration, when the headrest is tilted forward, the seat cushion slide can be locked in the storage area. Then, when the headrest is raised from this state, the lock can be released. Therefore, for example, even if a third-seat occupant performs this unlocking, it can be performed easily. Further, when the headrest is tilted forward, the headrest interferes with the occupant's back when sitting, and thus the occupant cannot take a normal sitting posture. Therefore, it is possible to make the occupant recognize that the vehicle seat is in a seating-preventing state, that is, the vehicle seat is in a state that does not conform to the regulations when seated. Further, according to this configuration, when the second slide lock mechanism is unlocked, not only the second slide lock mechanism but also the first slide lock mechanism can be unlocked. Therefore, for example, when the occupant wants to unlock the first slide lock mechanism, the first slide lock mechanism can be operated by operating the operation knob even if the occupant does not know or forgets the release method. Can be unlocked. Therefore, since the two release methods are provided, the convenience of the passenger can be improved.

According to a second aspect of the present invention, there is provided a seat cushion that is slidable back and forth with respect to the vehicle floor, a seat back that is assembled to the seat cushion, and a lift that can be raised and lowered relative to the seat back. The seat cushion slide range is a vehicle seat comprising a use area for sitting and a storage area in front of the use area, and the seat cushion is desired in the storage area. The first slide lock mechanism that can be locked in the slide position is provided. When the headrest is lowered to the non-use position, the first slide lock mechanism is switched from the unlocked state to the locked state, and the headrest is used from this state. When raised to the position, the first slide lock mechanism is unlocked from the locked state. And a second slide lock mechanism capable of locking the seat cushion to a desired slide position in the use region. The first slide lock mechanism has a plurality of engagement claws and is pivotally attached to the upper rail. The second slide lock mechanism includes a second hook having a plurality of engaging claws and pivotally attached to the upper rail. The lower rail includes a first hook in the storage area. A plurality of lower first holes that can penetrate the plurality of engaging claws of the hook are formed, and a plurality of lower second holes that can penetrate the plurality of engaging claws of the second hook are formed in the use region. The upper rail is formed with an upper first hole that can penetrate the plurality of engaging claws of the first hook and an upper second hole that can penetrate the plurality of engaging claws of the second hook. 2nd hole and 2nd upper The hole size between the lower first hole and the upper first hole is such that the engaging hooks of the first hook do not penetrate into the lower second hole and the upper second hole. The hole pitches of the plurality of lower first holes are set so that the plurality of engaging claws of the second hook do not penetrate the plurality of lower first holes. The lower second hole is set to be larger than the hole pitch, and the lower second hole, the lower first hole, the upper second hole, and the upper first hole are set to be located in the same straight line. The first slide lock mechanism is switched from the unlocked state to the locked state when the engaging claw of the first hook penetrates the upper first hole of the upper rail and the lower first hole of the lower rail. The second slide lock mechanism is not locked. The switching from the closed state to the locked state is performed when the engaging claw of the second hook passes through the upper second hole of the upper rail and also passes through the lower second hole of the lower rail. When the unlocking operation of the second slide lock mechanism is performed while the lock mechanism is in the locked state, the first slide lock mechanism is switched from the locked state to the unlocked state in conjunction with this operation. And
According to this configuration, when the headrest is lowered to the non-use position, the first slide lock mechanism can be operated as in the first aspect. Therefore, also in this second aspect, the same effect as in the first aspect can be obtained.
In the second aspect, if the headrest is held at the non-use position, the occupant is in a state where the vehicle seat is prevented from being seated, as in the state where the headrest is tilted forward in the first aspect. It can be recognized that the vehicle seat is not in compliance with the regulations. Further, according to this configuration, when the second slide lock mechanism is unlocked, not only the second slide lock mechanism but also the first slide lock mechanism can be unlocked. Therefore, for example, when the occupant wants to unlock the first slide lock mechanism, the first slide lock mechanism can be operated by operating the operation knob even if the occupant does not know or forgets the release method. Can be unlocked. Therefore, since the two release methods are provided, the convenience of the passenger can be improved.

Hereinafter, the best mode for carrying out the present invention will be described with reference to the drawings.
Example 1
First, Example 1 of the present invention will be described with reference to FIGS. FIG. 1 is a schematic side view of a vehicle seat according to a first embodiment of the present invention. 2A and 2B are schematic views showing the operation of the headrest of FIG. 1, FIG. 2A is a schematic view seen from the side, and FIG. 2B is a schematic view seen from the front.
FIG. 3 is a schematic diagram showing operations of the first slide lock mechanism and the second slide lock mechanism of FIG. In the following description, the terms “up”, “down”, “front”, “rear”, “left” and “right” refer to the directions of “up”, “down”, “front”, “rear”, “left” and “right” described in the above-described drawings. When up, down, front, back, left, right are shown. The same applies to Example 2 described later.

  First, a vehicle seat according to an embodiment of the present invention will be described with reference to FIG. As an example of the vehicle seat, a second seat disposed in the vehicle will be described as an example. Further, a third seat (not shown) is disposed behind the second seat in the vehicle.

  The second seat has a seat cushion 1 that serves as a seat for the occupant, a seat back 2 that can be tilted with respect to the seat cushion 1 and serves as a backrest for the occupant, and can be tilted forward with respect to the seat back 2. It is comprised from the headrest 3 comprised and supporting a passenger | crew's rear head. Below, these structural members are demonstrated separately.

  First, the seat cushion 1 will be described. The seat cushion 1 includes a rectangular frame-shaped cushion frame 10 that forms an outline thereof, a pad member 12 that is assembled to the cushion frame 10 in a covering manner, and a cover member that covers the pad member 12 (not shown). ).

  The cushion frame 10 of the seat cushion 1 is assembled to the vehicle floor F via the slide mechanism 50. The slide mechanism 50 is a known mechanism and includes a pair of left and right lower rails 54 and 54 and a pair of left and right upper rails 56 and 56 slidable on both the lower rails 54, respectively. Both upper rails 56 are fixed to the cushion frame 10, and both lower rails 54 are fixed to the vehicle floor F via legs 52, 52. Thereby, the seat cushion 1 (second seat) can be slid in the front-rear direction together with the seat back 2.

  At this time, the slide range is composed of a use area for a passenger to sit on, a storage area in front of the use area, and an intermediate area between the use area and the storage area. Each of these areas will be described individually. The use area is an area in which an occupant seated on the seat cushion 1 can sit with a seat belt (not shown) in a state in conformity with the regulations. In this usage region, the second slide lock mechanism 70 described later can regulate the sliding of the upper rail 56 with respect to the lower rail 54. Thereby, the seat cushion 1 can be locked at a desired slide position in the use region.

  In addition, the storage area is, for example, an area for expanding the luggage compartment when the third seat is brought to a state of being overturned, or an area for performing a walk-in function for facilitating getting on and off the third seat. In this storage area, similarly to the above-described use area, the sliding of the upper rail 56 with respect to the lower rail 54 can be regulated by a first slide lock mechanism 60 described later. Thereby, even in the storage area, the seat cushion 1 can be locked at a desired slide position.

  The intermediate area is an area that does not belong to the use area or the storage area. Note that, in the intermediate area, the seat cushion 1 cannot be locked at a desired slide position like the use area and the storage area described above.

  Next, the seat back 2 will be described. The seat back 2 includes a substantially U-shaped back frame 20 that forms an outline thereof, a pad member 22 that is assembled to the back frame 20 in a wrapping manner, and a cover member that covers the pad member 22 (illustrated). Not). The lower end of the seat back 2 is assembled to the rear end of the seat cushion 1 via a known reclining mechanism R. Accordingly, the seat back 2 can be tilted with respect to the seat cushion 1 and can be locked at a desired tilt position.

  Next, the headrest 3 will be described with reference to FIGS. 2 (A) and 2 (B). The headrest 3 includes a fixed side member composed of a pair of left and right stays 30, 30 and a base 32 fixed so as to be integrated with both the stays 30, and a main body 40 having cushioning properties for supporting the occupant's rear head. It is comprised from the movable side member which consists of. The main body 40 is assembled to the base 32 so as to be rotatable about an axis whose axial direction is the left-right direction.

  A cam plate 34 having an engagement hole 34a, a cam surface 34b, and an engagement wall 34c formed on the outer peripheral surface is fixed to the base 32. On the other hand, on the main body 40, a lever 42 whose tip is urged to the side surface (for example, the left side surface) in a backward tilting direction (in the direction of arrow A in FIG. 2A) is assembled via a pivot shaft 42a. ing. A hook 44 is formed integrally with the lever 42, and when the tip 44 a of the hook 44 is fitted into the engagement hole 34 a of the cam plate 34, the headrest 3 is held in the standing position. Thereby, the passenger | crew's back head seated on the seat cushion 1 can be supported.

  From this state, when the headrest 3 is tilted forward by operating the lever 42 so as to cancel the fitted state between the tip 44a of the hook 44 and the engagement hole 34a of the cam plate 34, the tip 44a of the hook 44 is When the cam surface 34b of the cam plate 34 slides and the tip 44a of the hook 44 eventually reaches the engagement wall 34c, the hook 44 and the cam plate 34 are held in a locked state.

  Thereby, the headrest 3 can be hold | maintained in a forward fall position. Since this holding is performed by a spring force that urges the hook 44, the headrest 3 can be returned to the standing position when the headrest 3 is raised backward with a force exceeding the spring force. In this manner, the headrest 3 can be held in the upright position, and can be held in the forward-turned position where the headrest 3 is moved forward with respect to the seat back 2 from the upright position.

  Further, a plate 36 whose one end 36a is biased downward (in the direction of arrow B in FIG. 2B) is pivotally attached to the base 32. The plate 36 is pivotally attached to the base 32 so that when the headrest 3 is held in an upright state, the other end 36b is in contact with the pivot shaft 42a of the lever 42 via a bracket (not shown). Has been. Further, one end of the first operation cable 80 is fixed to one end 36 a of the plate 36.

  Here, the first operation cable 80 will be described in detail. The first operation cable 80 includes a cylindrical outer cable 82 and an inner cable 84 that can be inserted through the outer cable 82 2. It is a cable member with a heavy structure. One end of the outer cable 82 is hooked to a hook (not shown) fixed to the base 32, and the other end is hooked to a hook (not shown) fixed to the cushion frame 10 of the seat cushion 1. .

  On the other hand, one end of the inner cable 84 is fixed to the one end 36a of the plate 36 as described above, and the other end is movably hooked in a long hole 64c of the first switching lever 64 described later. The inner cable 84 is set so that a tension acts on itself only when the headrest 3 is held in the standing position.

  Next, the first slide lock mechanism 60 and the second slide lock mechanism 70 will be described individually with reference to FIG. First, the first slide lock mechanism 60 will be described. The first slide lock mechanism 60 includes a first hook 62 and a first switching lever 64. The first hook 62 is a hook member formed so that the two engaging claws 62a are adjacent to each other. The first hook 62 is pivotally attached to the left upper rail 56 about an axis whose axial direction is the front-rear direction.

  At this time, the first hook 62 is pivotally mounted in a biased state in a direction in which both engaging claws 62a pass through the two upper large holes 56a formed in the left upper rail 56. The lower rail 54 on which the upper rail 56 slides is also formed with a plurality of lower large holes 54a that can penetrate both engaging claws 62a of the first hook 62 when the seat cushion 1 is slid to the storage area. .

  Then, both engaging claws 62a are formed in the left lower rail 54 in a state where the two engaging claws 62a of the first hook 62 are passed through the two upper large holes 56a formed in the left upper rail 56, respectively. If the two lower large holes 54a adjacent to each other among the plurality of lower large holes 54a are respectively penetrated, the sliding of the left upper rail 56 with respect to the left lower rail 54 can be restricted. Thereby, in the storage area, the seat cushion 1 can be locked at a desired slide position.

  In addition, the first switching lever 64 is used to eliminate the state in which the both engaging claws 62a of the first hook 62 have penetrated the two lower large holes 54a formed in the lower rail 54, that is, In order to eliminate the state in which the sliding of the upper rail 56 with respect to the lower rail 54 is restricted by the hook 62, one end (lower end) 64 a pushes in the arm (not shown) of the first hook 62, and the pushing causes the first This is a lever member that rotates one hook 62.

  The first switching lever 64 is pivotally attached to the left cushion frame 10 about an axis whose axial direction is the left-right direction. At this time, the first switching lever 64 is pivotally mounted in the biased state in the direction opposite to the direction in which one end 64a pushes the arm of the first hook 62 (in the direction of arrow C in FIG. 3). A long hole 64c is formed in the other end 64b of the first switching lever 64. As described above, the other end of the inner cable 84 that constitutes the first operation cable 80 is movably hooked in the long hole 64c.

  When the headrest 3 is held in the standing position, the first switching lever 64 is rotated against the urging force because the other end 64 b is pulled by the tension acting on the inner cable 84. Accordingly, the one end 64a of the first switching lever 64 is in a state where the arm of the first hook 62 is pushed in, so that the first slide lock mechanism 60 can be held in the unlocked state.

  Next, the second slide lock mechanism 70 will be described. The second slide lock mechanism 70 is configured in the same manner as the first slide lock mechanism 60 described above, and includes a second hook 72, a second switching lever 74, and a connecting link 76. . The second hook 72 is a hook member formed so that the three engaging claws 72a are adjacent to each other. The second hook 72 is pivotally attached in the same manner as the first hook 62 described above, and is pivotally attached to the left upper rail 56 about an axis whose axial direction is the front-rear direction.

  At this time, the second hook 72 is pivotally mounted in a biased state in a direction in which each of the engaging claws 72 a passes through the three upper small holes 56 b formed in the left upper rail 56. The lower rail 54 on which the upper rail 56 slides is also formed with a plurality of lower small holes 54b that can pass through the engaging claws 72a of the second hook 72 when the seat cushion 1 is slid to the use area. .

  Then, each engagement claw 72a is further formed in the left lower rail 54 in a state where each engagement claw 72a of the second hook 72 is passed through the three upper small holes 56b formed in the left upper rail 56. By sliding through any three adjacent lower small holes 54b among the plurality of lower small holes 54b, the sliding of the left upper rail 56 with respect to the left lower rail 54 can be restricted. Thereby, even in the use region, the seat cushion 1 can be locked at a desired slide position.

  Further, the second switching lever 74 is used to eliminate the state in which each engaging claw 72a of the second hook 72 has penetrated the three lower small holes 54b formed in the lower rail 54, that is, In order to eliminate the state in which the sliding of the upper rail 56 with respect to the lower rail 54 is restricted by the hook 72, one end (lower end) 74a pushes the arm (not shown) of the second hook 72, and the pushing causes the first This is a lever member for rotating the second hook 72.

  The second switching lever 74 is pivotally mounted in the same manner as the first switching lever 64 described above, and is pivotally mounted on the left cushion frame 10 about an axis whose axial direction is the left-right direction. At this time, the second switching lever 74 is pivotally attached in a biased state in the direction opposite to the direction in which one end 74a pushes the arm of the second hook 72 (in the direction of arrow D in FIG. 3). A long hole 74 c is formed in the other end 74 b of the second switching lever 74. The other end of the second operation cable 90 (outer cable 92, inner cable 94) configured in the same manner as the first operation cable 80 already described is movably hooked in the long hole 74c.

  An operation knob (not shown) is fastened to one end of the second operation cable 90. When the operation knob is in the operation state, the inner cable 94 is set to be bent without any tension acting on itself. As a result, the one end 74 of the second switching lever 74 does not enter the state where the arm of the second hook 72 is pushed in, so that the second slide lock mechanism 70 can be held in the locked state.

  Note that the engaging claws 62 a of the first hook 62 described in the first slide lock mechanism 60 are formed larger than the engaging claws 72 a of the second hook 72 described in the second slide lock mechanism 70. Has been. Therefore, the engaging claws 62a of the first hook 62 do not pass through the lower small hole 54b and become locked. Further, the interval between the lower large holes 54a described in the first slide lock mechanism 60 and the interval between the engaging claws 72a of the second hook 72 described in the second slide lock mechanism 70 are different. Yes. Therefore, the engaging claws 72a of the second hook 72 do not pass through the lower large hole 54a and become locked.

  Finally, the connecting link 76 will be described. The connection link 76 is a link member that transmits the rotation to the first switching lever 64 when the operation knob is operated to rotate the second switching lever 74. One end (left end in FIG. 3) 76a of the connecting link 76 is pivotally attached to the second switching lever 74, and the other end (right end in FIG. 3) 76b is a pin formed on the first switching lever 64. 64d. At this time, a long hole 76c is formed in the other end 76b of the connecting link 76, and the pin 64d is latched so as to be movable in the long hole 76c.

  Then, the effect | action of the 2nd sheet | seat which consists of the structure mentioned above is demonstrated. In this description, the description starts from a state in which the slide of the seat cushion 1 is locked by the second slide lock mechanism 70 in the lowermost of the use area (the seat cushion 1 is the rearmost position in the use area). To do. At this time, the headrest 3 shall be hold | maintained in the standing position (state shown in FIG. 1). In this description, a case where a third-seat occupant operates the second seat will be described.

  From this state, for example, when it is desired to slide the second seat to the front most of the storage area (the seat cushion 1 is the frontmost position in the storage area), first, the occupant of the third seat operates the operation knob to The seat cushion 1 is slid forward while unlocking the slide lock mechanism 70. Next, when the seat cushion 1 reaches the front most in the storage area, the third seat occupant releases the operation knob and operates the lever 42 to move the headrest 3 forward.

  Then, inside the headrest 3, the plate 36 is rotated by the urging force acting on itself so that the other end 36b is not in contact with the pivot shaft 42a (FIG. 2B). In this case, the state is rotated from the state shown by the solid line to the state shown by the imaginary line). Due to this rotation, the inner cable 84 of the first operation cable 80 is bent, so that the first switching lever 64 is also rotated by the urging force acting on itself (in FIG. 3, it is imagined from the state shown by the solid line). Rotate to the state shown by the line). As a result, the state in which the arm of the first hook 62 is pushed in is eliminated, so that both the engaging claws 62a of the first hook 62 together with the upper large hole 56a of the upper rail 56 have the lower large hole 54a of the lower rail 54. It is rotated by the urging force acting on itself so as to be fitted in.

  When this fitting is completed, the first slide lock mechanism 60 is switched from the unlocked state to the locked state. In this manner, the third seat occupant can slide the second seat from the lowermost in the use area to the front most in the storage area. When the slide of the second seat is locked in the storage area, the headrest 3 is in the forward-turned state, so that the occupant conforms to the regulations when the second seat is seated, that is, the second seat is seated. You can recognize that it is not in the state.

  Next, when returning from this state to the state before sliding, that is, when returning from the front most in the storage area to the lower most in the use area, first, the passenger in the third seat raises the headrest 3 backward. Then, inside the headrest 3, the plate 36 rotates against the urging force acting on the plate 36 so that the other end 36b is brought back into contact with the pivot shaft 42a (FIG. 2B ) From the state indicated by the imaginary line to the state indicated by the solid line). Since the tension acts on the inner cable 84 of the first operation cable 80 by this rotation, the first switching lever 64 also rotates against the urging force acting on itself (in FIG. 3, a solid line). State shown).

  As a result, since the arm of the first hook 62 is pushed in, both the engaging claws 62a of the first hook 62 and the upper large hole 56a of the upper rail 56 are in contact with the lower large hole 54a of the lower rail 54. It turns against the urging force acting on itself so as to eliminate the fitting. When the removal of the fitting is completed, the first slide lock mechanism 60 is switched from the locked state to the unlocked state.

  Next, the passenger of the third seat slides the seat cushion 1 backward. When the seat cushion 1 reaches the front most in the use area, the second seat is returned to the locked state by the urging force acting on the second hook 72. Therefore, the occupant of the third seat further slides the seat cushion 1 backward while operating the operation knob to unlock the second slide lock mechanism 70. Then, when the seat cushion 1 reaches the rearmost in the use area, the occupant of the third seat releases the operation of the operation knob. In this manner, the third seat occupant can return the second seat from the front most in the storage area to the lower most in the use area.

  In this case (when returning from the front most in the storage area to the lower most in the use area), the passenger in the third seat may operate the operation knob instead of raising the headrest 3 as described above. In that case, when the passenger of the third seat operates the operation knob, the first switching lever 64 is brought into the same state as the state where the other end 64b is pulled by the tension acting on the inner cable 84 by the connecting link 76. It will be in a state of turning against the power. Thereby, since the 1st slide lock mechanism 60 can be held in an unlocked state as mentioned above, the second seat can be slid back. In this way, the third-seat occupant can operate the operation knob to return the second seat from the front most in the storage area to the lower most in the use area.

  The second sheet according to Example 1 of the present invention is configured as described above. According to this configuration, when the headrest 3 is tilted forward (when the second seat is seated and is not in compliance with the regulations), the slide of the seat cushion 1 can be locked in the storage area. Further, when the headrest 3 is raised backward from the state where the headrest 3 is tilted forward, the lock can be released. Therefore, even if the passenger of the third seat performs this unlocking, it can be performed easily.

  In addition, according to this configuration, when the second slide lock mechanism 70 is unlocked, not only the second slide lock mechanism 70 but also the first slide lock mechanism 60 can be unlocked. . Therefore, for example, when the occupant wants to unlock the first slide lock mechanism 60, even if he / she does not know or forgets how to release the first slide lock mechanism 60, if the operation knob is operated, the first slide lock The mechanism 60 can be unlocked. Therefore, since the two release methods are provided, the convenience of the passenger can be improved.

(Example 2)
Next, Example 2 of the present invention will be described with reference to FIGS. FIG. 4 is a schematic side view of the vehicle seat according to the second embodiment of the present invention. FIG. 5 is a schematic view seen from the front showing the operation of the headrest of FIG. In the following description, members having the same or equivalent configuration as those of the first embodiment are denoted by the same reference numerals in the drawings, and redundant description is omitted.

  The second seat of the second embodiment is different from the second seat of the first embodiment described above only in that the headrest 103 is assembled to the seat back 2 so as to be movable up and down. Therefore, as shown in FIG. 4, the headrest 103 of the second embodiment includes a pair of left and right stays 130, a base (not shown) fixed so as to be integrated with both the stays 130, and the occupant's rear head It is comprised from the main body 140 which has the cushioning property for supporting.

  The pair of left and right stays 130 are assembled to the back frame 20 of the seat back 2 so as to be movable up and down. At this time, the pair of left and right stays 130 can be held with respect to the back frame 20 at a use position (a position indicated by a solid line in FIG. 5) where the passenger's rear head can be supported and lowered from the use position. It is assembled so that it can be held with respect to the back frame 20 at a non-use position (a position indicated by an imaginary line in FIG. 5).

  Among these stays 130, for example, the left stay 130 has a plate 136 fixed to the lower end thereof. One end of the inner cable 84 of the first operation cable 80 is fixed to the plate 136. The inner cable 84 is set so that tension acts on itself only when the main body 140 (headrest 103) is held at the use position.

  The second sheet according to Example 2 of the present invention is configured as described above. According to this configuration, when the headrest 103 is lowered from the use position to the nonuse position, the first operation cable 80 acts in the same manner as in the state where the headrest 3 is tilted forward from the standing position. Similarly, the first slide lock mechanism 60 can be operated. Therefore, also in the second embodiment, it is possible to obtain the same effect as that of the first embodiment.

  Even in the second embodiment, when the headrest 103 is held at the non-use position, the occupant is in a state in which the second seat is prevented from being seated, as in the state in which the headrest 3 is tilted forward in the first embodiment. That is, it can be recognized that the second sheet is not in compliance with the regulations.

The contents described above are only related to one embodiment of the present invention, and do not mean that the present invention is limited to the above contents.
In each embodiment, a second seat that can be operated by a passenger in a third seat has been described as an example of the vehicle seat. However, the present invention is not limited to this, and it may be a first seat (passenger seat or driver seat) that can be operated by an occupant of the second seat.

FIG. 1 is a schematic side view of a vehicle seat according to a first embodiment of the present invention. 2A and 2B are schematic views showing the operation of the headrest of FIG. 1, FIG. 2A is a schematic view seen from the side, and FIG. 2B is a schematic view seen from the front. FIG. 3 is a schematic diagram showing operations of the first slide lock mechanism and the second slide lock mechanism of FIG. FIG. 4 is a schematic side view of the vehicle seat according to the second embodiment of the present invention. FIG. 5 is a schematic view seen from the front showing the operation of the headrest of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Seat cushion 2 Seat back 3 Headrest (Example 1)
60 First slide lock mechanism 70 Second slide lock mechanism 103 Headrest (Example 2)
F Vehicle floor

Claims (2)

It consists of a seat cushion that is slidable back and forth with respect to the vehicle floor, a seat back that is assembled to this seat cushion, and a headrest that is assembled to be able to tilt forward against this seat back.
The sliding range of the seat cushion is a vehicle seat that includes at least a use area for an occupant to sit on and a storage area in front of the use area,
A first slide lock mechanism capable of locking the seat cushion to a desired slide position in the storage area;
When the headrest is moved forward, the first slide lock mechanism switches from the unlocked state to the locked state,
From this state, when the headrest is raised backward, the first slide lock mechanism switches from the locked state to the unlocked state,
A second slide lock mechanism capable of locking the seat cushion to a desired slide position in the use region;
The first slide lock mechanism includes a first hook having a plurality of engaging claws and pivotally attached to the upper rail.
The second slide lock mechanism includes a second hook having a plurality of engaging claws and pivotally attached to the upper rail.
The lower rail is formed with a plurality of lower first holes that can penetrate the plurality of engaging claws of the first hook in the storage area, and the lower rail that can penetrate the plurality of engaging claws of the second hook in the use area. A plurality of second holes are formed;
The upper rail is formed with an upper first hole that can penetrate the plurality of engaging claws of the first hook and an upper second hole that can penetrate the plurality of engaging claws of the second hook.
The hole size of the lower second hole and the upper second hole is determined so that the engaging hook of the first hook does not penetrate the lower second hole and the upper second hole. It is set differently for the hole size with the upper first hole,
The hole pitch of the plurality of lower first holes is set so that the plurality of engagement claws of the second hook do not penetrate through the plurality of lower first holes. Is set to be large ,
The lower second hole, the lower first hole, the upper second hole, and the upper first hole are set to be positioned in the same straight line,
The first slide lock mechanism is switched from the non-lock state to the lock state when the engagement hook of the first hook penetrates the upper first hole of the upper rail and penetrates the lower first hole of the lower rail. Made by
The second slide lock mechanism is switched from the non-locked state to the locked state when the engaging hook of the second hook penetrates the upper second hole of the upper rail and also penetrates the lower second hole of the lower rail. Made by
If the unlock operation of the second slide lock mechanism is performed while the first slide lock mechanism is in the locked state, the first slide lock mechanism is changed from the locked state to the unlocked state in conjunction with this operation. A vehicle seat characterized by switching . It consists of a seat cushion that is slidable back and forth with respect to the vehicle floor, a seat back that is assembled to this seat cushion, and a headrest that is assembled so that it can be raised and lowered relative to this seat back.
The sliding range of the seat cushion is a vehicle seat comprising a use area for sitting and a storage area in front of the use area,
A first slide lock mechanism capable of locking the seat cushion to a desired slide position in the storage area;
When the headrest is lowered to the non-use position, the first slide lock mechanism switches from the unlocked state to the locked state,
From this state, when the headrest is raised to the use position, the first slide lock mechanism switches from the locked state to the unlocked state,
A second slide lock mechanism capable of locking the seat cushion to a desired slide position in the use region;
The first slide lock mechanism includes a first hook having a plurality of engaging claws and pivotally attached to the upper rail.
The second slide lock mechanism includes a second hook having a plurality of engaging claws and pivotally attached to the upper rail.
The lower rail is formed with a plurality of lower first holes that can penetrate the plurality of engaging claws of the first hook in the storage area, and the lower rail that can penetrate the plurality of engaging claws of the second hook in the use area. A plurality of second holes are formed;
The upper rail is formed with an upper first hole that can penetrate the plurality of engaging claws of the first hook and an upper second hole that can penetrate the plurality of engaging claws of the second hook.
The hole size of the lower second hole and the upper second hole is determined so that the engaging hook of the first hook does not penetrate the lower second hole and the upper second hole. It is set differently for the hole size with the upper first hole,
The hole pitch of the plurality of lower first holes is set so that the plurality of engagement claws of the second hook do not penetrate through the plurality of lower first holes. Is set to be large ,
The lower second hole, the lower first hole, the upper second hole, and the upper first hole are set to be positioned in the same straight line,
The first slide lock mechanism is switched from the non-lock state to the lock state when the engagement hook of the first hook penetrates the upper first hole of the upper rail and penetrates the lower first hole of the lower rail. Made by
The second slide lock mechanism is switched from the non-locked state to the locked state when the engaging hook of the second hook penetrates the upper second hole of the upper rail and also penetrates the lower second hole of the lower rail. Made by
If the unlock operation of the second slide lock mechanism is performed while the first slide lock mechanism is in the locked state, the first slide lock mechanism is changed from the locked state to the unlocked state in conjunction with this operation. A vehicle seat characterized by switching .

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