JP2013001176A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simply and continuously perform an operation for reclining a seat back to a predetermined forward tilt position and locking it, and an operation for releasing a locked state in the forward tilt position so that the seat back can be reclined to a folded-down position, with one hand.SOLUTION: A vehicle seat 1 includes a W/I lever 7 which makes the seat back 2 locked by being tiled to the predetermined forward tilt position from an ordinary use position, and an F/D button 9 which releases the locked state of the seat back 2 in the predetermined forward tilt position so that so that the seat back 2 can be reclined to the folded-down position. The F/D button 9 is provided together with the W/I lever 7 in the seat back 2, and disposed adjacently to a position after an operation in which the W/I lever 7 is operated, with respect to the W/I lever 7.

Description

  The present invention relates to a vehicle seat. Specifically, the forward tilt operation member that allows the seat back to be tilted from the normal use position to the predetermined forward tilt position and locked, and the locking state of the seat back at the predetermined forward tilt position are released. The present invention relates to a vehicular seat having a large tilting operation member that allows a seat back to be tilted down to a position.

  Conventionally, in a vehicle seat, by operating a first lever provided on the seat body, the seat back is tilted to a predetermined forward tilt position, and then the second lever is operated to increase the seat back. There is one configured to be pushed down to the fall position (see Patent Document 1). Specifically, the first lever is set on the side of the vehicle seat on the vehicle outer side (the side closer to the passenger door), and the second lever is set on the shoulder on the vehicle outer side of the seat back. .

JP 2009-255811 A

  However, in the above prior art, since the first lever and the second lever are arranged far apart in the height direction, the folding operation to the forward tilt position of the seat back and the subsequent large tilt position are performed. In order to perform the tilting operation up to 1 with one hand, it is necessary to release the hand from the first lever and move the hand to the second lever, and the operability is poor. The present invention was devised as a solution to the above-mentioned problem, and the problem to be solved by the present invention is that the seat back is tilted forward to a predetermined forward tilt position so as to be locked. The operation of the operation member and the operation of the large-down operation member that releases the locked state at the forward tilted position so that the seat back can be folded down to the position can be performed easily and continuously with one hand. There is to do.

In order to solve the above problems, the vehicle seat of the present invention takes the following means.
According to a first aspect of the present invention, there is provided a forward tilt operation member that allows the seat back to be tilted from the normal use position to a predetermined forward tilt position and locked, and the seat back at the predetermined forward tilt position. A vehicular seat having a large-turning operation member that releases the seatback so that the seatback is pushed down to a position. The large tilt operation member is provided on the seat back together with the forward tilt operation member, and is disposed adjacent to the position after the operation where the forward tilt operation member is operated with respect to the forward tilt operation member.

  According to the first aspect of the present invention, since the large tilting operation member is disposed adjacent to the position after the operation of the forward tilting operation member, the hand operating the forward tilting operation member is directly tilted as it is to the operation member. It becomes possible to operate. Therefore, the operation of the forward tilt operation member and the operation of the tilting operation member can be performed easily and continuously with one hand.

  According to a second invention, in the first invention described above, both the operation members are arranged and set in a shoulder opening portion of the seat back outside the vehicle.

  According to the second aspect of the present invention, since both the operation members are arranged and set on the shoulder opening portion on the vehicle outer side of the seat back, the vehicle can be used from the position where the user is seated on the seat on the rear row side of the vehicle seat. Each operation can be performed easily and continuously with one hand by placing hands on both operation members from a position of the seat standing outside the entrance door.

  According to a third aspect of the present invention, in the second aspect described above, the forward tilt operation member is a lever structure that is operated by being raised to the front side of the seat at the shoulder portion of the seat back, and the large tilt operation member is tilted forward. The push-type button structure is provided adjacent to the front side portion of the operation member.

  According to the third aspect of the present invention, when operating the forward tilting operation member, for example, when the operation is performed by using one of the four fingers from the index finger to pull up, the adjacent large tilting operation is performed after the operation. By operating the member so as to be pushed in with the thumb of the operated hand, both the operating members can be easily and continuously operated with one hand. In addition, when operating the forward tilt operation member so as to push it up with the thumb, after that operation, the adjacent tilting operation member is moved from the index finger of the operated hand to any one of the four fingers. By operating it so that it is pushed in, both operating members can be operated easily and continuously with one hand. In any case, when the seat back is tilted forward, the seat back can be tilted forward while holding the seat back with the hand of the operation having the forward tilt operation member. Even after the operation, while holding the seat back as it is, the seat back can be greatly tilted to the position, and the operability for tilting the seat back can be improved.

It is the perspective view which showed the external appearance structure of the vehicle seat. It is the perspective view which looked at the internal structure of the vehicle seat from the vehicle outside. It is the perspective view which looked at the internal structure of the vehicle seat from the vehicle inner side. It is the side view which showed the frame structure of the vehicle outer side of the vehicle seat. It is the VV sectional view taken on the line of FIG. It is the side view which showed the state by which the cancellation | release lever was operated from the state of FIG. It is the side view which showed the state by which the W / I lever was operated from the state of FIG. FIG. 8 is a side view showing a state in which the seat back is tilted to a forward tilt position from the state of FIG. 7. It is the side view which showed the state by which the F / D button was operated from the state of FIG. FIG. 10 is a side view showing a state in which the seatback is largely collapsed from the state of FIG. It is the side view which showed the frame structure inside the vehicle of the vehicle seat corresponding to the state of FIG. It is the side view which showed the state in the middle of being tilted to the forward tilt position. It is the side view which showed the state in which the seat back was tilted to the forward tilt position. It is the side view which showed the state by which the seat back was knocked down to the position. It is the enlarged view which showed the state of the hand when operating a W / I lever by the 1st way of holding. It is the enlarged view which showed the state of the hand when operating a W / I lever by the 2nd way of holding.

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

  First, the configuration of the vehicle seat 1 according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the vehicle seat 1 of the present embodiment is configured as a second row seat on the rear side of a passenger seat of a vehicle provided with a three row seat (not shown). The vehicle seat 1 includes a seat back 2 that serves as a backrest for a seated occupant, a seat cushion 3 that serves as a seating portion, and a headrest 4 that supports the head. As shown in FIGS. 2 to 3, the seat back 2 is a plane in which the lower ends of the left and right sides of the seat back frame 2 </ b> A that are assembled in an inverted U-shape forming the skeleton form the skeleton of the seat cushion 3 Recliner devices 5 and 5 functioning as a rotation shaft device capable of stopping rotation are connected to the rear end portions of the left and right sides of the seat cushion frame 3A assembled in a U-shape.

  The reclining devices 5 and 5 described above are normally held in a locked state in which the backrest angle of the seat back 2 with respect to the seat cushion 3 is fixed. The reclining devices 5 and 5 are in a locked state in which the release lever 6 provided on the side of the seat cushion 3 on the vehicle outer side (the side closer to the passenger door) is pulled up (see FIG. 6) or the seat back 2 is on the vehicle outer side. The W / I (walk-in) lever 7 provided at the shoulder portion of the head is lifted forward (see FIGS. 1 and 7) to be released. By releasing the locked state of these reclining devices 5, 5, the seat back 2 can be tilted back and forth around the axis of each reclining device 5, 5. Then, when the seat back 2 is adjusted to an arbitrary tilting position, the reclining devices 5 and 5 are returned to the locked state again by releasing the above-described operations, and the seat back 2 is adjusted to the adjusted backrest. Fixed at the angular position. Here, the W / I lever 7 corresponds to the “forward tilt operation member” of the present invention.

  Here, as shown in FIG. 2, a spiral spring 2 </ b> A <b> 3 is hooked between a vehicle outer side portion of the seat back frame 2 </ b> A and a seat cushion frame 3 </ b> A vehicle outer side portion. The spiral spring 2A3 has an inner end that is hooked on a vehicle outer side of the seat cushion frame 3A, and an outer end coupled to the vehicle outer side of the seat back frame 2A. The letter plate 2A2 is hooked from the rear side to the one part protruding to the vehicle outer side. By this spiral spring 2A3, the seat back 2 is always in a state where an urging force is applied in a direction in which the seat back 2 rotates forward. Therefore, the seat back 2 is configured so that the release lever 6 (see FIG. 6) and the W / I are positioned from a position where the user stands outside the passenger door outside the vehicle in a state where no person is seated on the vehicle seat 1. By operating the lever 7 (see FIG. 7), the lever 7 is pushed forward from the normal use position by the biasing force of the spiral spring 2A3.

  Here, as shown in FIGS. 3 to 4, the forward rotation of the seat back 2 is caused by the stopper pin 12 </ b> B of the locking mechanism 10 provided on the inner side surface of the seat cushion frame 3 </ b> A on the vehicle outer side. It is locked at the forward tilt position shown in FIG. 8 (corresponding to the “predetermined forward tilt position” of the present invention). As the seat back 2 tilts to the forward tilt position, as shown in FIGS. 2 and 11, the seat back 2 is provided on the inner side surface of the side portion of the seat cushion frame 3 </ b> A on the vehicle inner side (the side far from the passenger door). When the slide release mechanism 8 is pushed and kicked (see FIGS. 12 to 13), the slide locks of the slider devices 30 and 30 provided between the vehicle seat 1 and the floor via the cable 8C are operated. The state is to be released. By this release operation, the vehicular seat 1 can slide in the vehicle front-rear direction with respect to the floor. Therefore, by sliding the vehicle seat 1 to the front side of the vehicle in this state (a state in which the seatback 2 is tilted to the forward tilt position), a wide space for passengers to get on and off the rear seats is secured. Thus, the boarding / exiting ability can be improved.

  Further, the vehicle seat 1 is configured so that the F / D (provided at the front portion of the W / I lever 7 described above with reference to FIG. 1 from the state in which the seat back 2 illustrated in FIG. (Fold down) By pushing the button 9 downward, the locked state by the locking mechanism 10 is released, and the seat back 2 passes over the forward tilt position and overlaps the upper surface of the seat cushion 3. It is designed to be pushed down to the position. Here, the F / D button 9 corresponds to the “largely downsized operation member” of the present invention. Specifically, as shown in FIG. 2 to FIG. 3, the large fall rotation of the seat back 2 protrudes outside the L-shaped plates 2 </ b> A <b> 2 and 2 </ b> A <b> 2 coupled to the outer portions of the left and right side lower portions of the seat back frame 2 </ b> A. Each piece is stopped at a position where it abuts and stops against each stopper surface 3A1, 3A1, which is formed to protrude in a square shape on the front side at the rear upper edge of the left and right sides of the seat cushion frame 3A. (See FIGS. 10 and 14). When the seat back 2 is largely collapsed, the state in which the above-described slide release mechanism 8 is pushed and kicked by the seat back 2 is released, and the slider devices 30 and 30 are returned to the slide-locked state again. (See FIG. 14). As a result, the vehicle seat 1 is in a state where the seat back 2 is largely folded down and is compactly folded, so that the vehicle interior space can be expanded widely, and the back surface of the seat back 2 that has been largely collapsed is It becomes a state where it can be used as a loading surface for various luggage storages or tables, and the convenience in the passenger compartment can be improved.

  As described above, the vehicle seat 1 is configured such that the seat back 2 can be tilted to the forward tilt position by the operation of the W / I lever 7, and the seat by the operation of the F / D button 9 after tilting. The back 2 is tilted further forward so that it can be brought down to the position. Next, the configuration of the W / I lever 7 and the F / D button 9 will be described with reference to FIG. The W / I lever 7 is provided to be connected to the shoulder portion of the seatback 2 outside the vehicle so as to be able to rotate up and down by a connecting shaft 7B (see FIGS. 15 to 16). It is structured to be raised and operated on the front side of the seat. The W / I lever 7 has a plate-like gripping portion 7 </ b> C (see FIGS. 15 to 16) that extends from a connection portion with the connection shaft 7 </ b> B by a biasing force of a spring (not shown) at all times. It is held in a state where it is pushed down to the rear side of the seat to a position that is flush with the upper surface portion. The W / I lever 7 is operated by pulling the cable 7A connected to the W / I lever 7 by operating the user so that the user holds the gripping portion 7C and raises it to the front side of the seat. 7, an operation link 6 </ b> D, which will be described later with reference to FIG. 7, is rotated so that the seat back 2 is tilted to the forward tilt position.

  As shown in FIG. 1, the F / D button 9 is disposed adjacent to the front side of the location where the W / I lever 7 is disposed, and is operated by being pushed into the lower side of the seat back 2. It is supposed to be a structure. The F / D button 9 is provided so as to protrude in the height direction from the initial position before the operation of the W / I lever 7 by a biasing force of a spring (not shown) at all times. Operates to push the F / D button 9 downward, pulling the cable 9A connected to the F / D button 9 and operating the arm 13 of the locking mechanism 10 described later in FIG. Is rotated to release the locked state of the seat back 2 in the forward tilted position by the locking mechanism 10 so that the seat back 2 can be largely tilted to the position.

  By the way, since the F / D button 9 described above is disposed adjacent to the front side of the position where the W / I lever 7 is disposed, the operated hand remains as it is after the W / I lever 7 is operated. It can also reach the F / D button 9 so that the F / D button 9 can be pushed in continuously. Specifically, as shown in FIG. 15, for example, when the W / I lever 7 is operated as one of the first holding methods, the index finger of the operating hand is lifted by using any one of four fingers. When the operation is performed, the vacant thumb is brought close to the upper position of the F / D button 9 adjacent to the front side of the W / I lever 7 after the operation. Therefore, the F / D button 9 can be continuously operated while the W / I lever 7 is operated by holding the thumb on the F / D button 9 by extending the operation of the W / I lever 7 as it is. Can be done.

  Alternatively, as shown in FIG. 16, when the W / I lever 7 is operated to be pushed up with the thumb as a second way of holding, after the operation, the four fingers from the vacant index finger to the little finger are used. The finger is brought close to the upper position of the F / D button 9 adjacent to the W / I lever 7. Therefore, by holding one of those fingers as it is on the F / D button 9 by extending the operation of the W / I lever 7, the F / D button 9 can be operated while the W / I lever 7 is being operated. The operation can also be performed continuously.

  In addition, even when operated by any of the above holding methods, the finger that operates the W / I lever 7 and the finger that operates the F / D button 9 grip the shoulder portion of the seat back 2. Therefore, both when the W / I lever 7 is operated and when the F / D button 9 is operated, the seat back 2 is held while holding the seat back 2 with the operated hand. 2 can be brought down to the above-described forward tilt position or large fall position. Therefore, the falling speed of the seat back 2 can be suppressed with the hand holding the seat back 2 so that the falling speed of the seat back 2 does not become too rapid. Further, the operation direction of the W / I lever 7 described above is set to the same forward direction as the folding direction of the seat back 2, and the operation direction of the F / D button 9 is the same as the folding direction of the seat back 2. It is set downward. Therefore, since the operation feeling for performing these operations is close to the operation feeling for tilting the seat back 2 forward, the user can easily recognize the operation method of the W / I lever 7 and the F / D button 9. In addition, the operability can be improved.

  Further, as described above, the W / I lever 7 and the F / D button 9 include a finger of the hand that holds the W / I lever 7 and a finger that presses the remaining F / D button 9. When the F / D button 9 is operated with the hand operating the W / I lever 7, the operation direction is set so as to apply the force by grasping the shoulder portion of the seat back 2. It is easy to apply force, and after both operations, the shoulders of the seat back 2 can be held without changing hands until the seat back 2 is completely lowered. The seat back 2 can be pushed down while being held, and the operability is also good.

  Hereinafter, the structure of each mechanism mounted on the vehicle seat 1 described above will be described in detail. As shown in FIG. 1, the above-described seat back 2 has a cushion pad 2 </ b> B made of a urethane resin foam molding on the surface portion of the seat back frame 2 </ b> A shown in FIG. 2 or 3 described above. In addition, a cover 2C made of cloth is applied so as to cover the entire surface. Similarly, the seat cushion 3 is also covered with a cushion pad 3B made of a foamed foam of urethane resin on the surface portion of the seat cushion frame 3A shown in FIG. 2 and FIG. A cover 3C made of cloth is placed so as to cover it.

  First, the configuration of each reclining device 5, 5 will be described. The reclining devices 5 and 5 are arranged in symmetrical directions with each other, but the basic configuration of both is the same. Therefore, in the following, only the configuration of the reclining device 5 arranged outside the vehicle shown in FIG. 4 will be described on behalf of these. As shown in FIG. 5, the reclining device 5 includes a disc-shaped ratchet 5A that is in contact with and integrally welded to the outer surface of the side frame of the seat back frame 2A, and a side frame of the seat cushion frame 3A. A disc-shaped guide 5B that is in contact with the inner surface of the plate and is integrally welded. The ratchet 5A and the guide 5B are fitted in the axial direction and can rotate relative to each other around the same axis. In this state, the outer ring 5C is assembled so as to be prevented from coming off in the axial direction.

  The ratchet 5A and the guide 5B have two poles 5D and 5D each having an external tooth incorporated between them, and the hinge cam 5F is pivotally supported by the central portion of the guide 5B. The relative rotation is locked or released by being pressed so as to mesh with the ratchet 5A via the slide cam 5E that is slid by the 5F, or operated so as to be released from the meshed state with the ratchet 5A. It is the structure which can be switched so that.

  The hinge cam 5F is normally rotated and biased by the biasing force of the spiral spring 5G hooked between the hinge cam 5F and the pawls 5D and 5D in a state of being held in mesh with the ratchet 5A. ing. Accordingly, the reclining device 5 is normally in a state in which the backrest angle of the seat back 2 is fixed in a state where the relative rotation between the ratchet 5A and the guide 5B is locked (rotation stopped state). However, the hinge cam 5F is rotated by the operation of the release lever 6 and the W / I lever 7 (see FIG. 1) described above, with the operation shaft 5H inserted through the shaft center portion and made integral in the rotation direction. As a result, the pawl 5D is rotated against the urging force of the spiral spring 5G, and the pawls 5D and 5D are pulled back so as to be disengaged from the ratchet 5A. Thereby, the state (locked state) in which the ratchet 5A and the guide 5B are prevented from rotating is released, and the fixed state of the backrest angle of the seat back 2 is released.

  Further, when the release lever 6 and the W / I lever 7 are released, the hinge cam 5F returns to the state in which the pawls 5D and 5D are engaged with the ratchet 5A by the urging force of the spiral spring 5G again. To hold. The above is the basic structure of each reclining device 5, 5. Note that the operation shaft 5H of the reclining device 5 arranged on the vehicle inner side is integrally connected to the operation shaft 5H of the reclining device 5 arranged on the vehicle outer side via a connecting rod 5R. The lock / release switching operation is performed all at once in conjunction with the movement of the shaft 5H rotated by a release arm 5L described later.

  Next, the configuration of the release lever 6 will be described with reference to FIGS. 4 and 6. As shown in FIG. 4, the release lever 6 is rotatably connected to a surface portion of the side frame outside the vehicle of the seat cushion frame 3 </ b> A by a connecting shaft 6 </ b> B. Specifically, the connecting shaft 6B is integrally connected to the seat cushion frame 3A, and the release lever 6 is rotatably connected to the connecting shaft 6B. The release lever 6 is pivotally supported by the connecting shaft 6B at a rear portion position that is directly below the seat back 2, and an arm piece that serves as a grip portion extends from the pivot support portion toward the front side of the seat. Is formed. The release lever 6 is normally urged in the direction of rotating the arm piece extending forward by the urging force of the torsion spring 6C hooked between the release lever 6 and the connecting shaft 6B. The locking piece 6A2 formed on the lower surface portion is locked at a position where the locking piece 6A2 contacts the upper surface of the locking plate 3A2 formed by cutting and raising the seat cushion frame 3A.

  In addition to the release lever 6, an operation link 6D is rotatably connected to the connecting shaft 6B. The operation link 6D is configured to extend the arm piece in two radial directions, and the arm piece extending to the rear side of the seat in the initial state of FIG. 4 is described above via the driven link 6E. A release arm 5L connected to the operation shaft 5H of the reclining device 5 is linked. Specifically, the driven link 6E is formed in an elongated shape in the seat height direction, and its upper end portion is rotatably connected to the rear end portion of the release arm 5L by the connecting shaft 6E1, and the lower end portion is The connecting shaft 6E2 is rotatably connected to the rear end portion of the arm piece extending to the rear side of the operation link 6D described above. Here, the release arm 5L is provided so as to extend from the connecting portion with the operation shaft 5H of the reclining device 5 disposed on the vehicle outer side to the seat rear side. In addition, an arc-shaped elongated hole 6D2 extending in the rotation direction of the operation link 6D is formed in the arm piece that extends to the lower side of the seat of the operation link 6D. The end of the cable 7A connected to the lever 7 is connected.

  As shown in FIG. 6, when the release lever 6 is pulled up, the operation link 6 </ b> D has a leg piece 6 </ b> D <b> 1 formed on the upper surface of the arm piece that extends to the rear side of the seat. It is pushed by the formed corner 6A1 and rotates together with the release lever 6 in the clockwise direction in the figure. As a result, the driven link 6E is operated so as to be pushed downward, the release arm 5L connected to the operation shaft 5H of the reclining device 5 is rotated in the same direction, and the locked state of the reclining devices 5 and 5 is released. Is done. Further, the operation link 6D is released from the lifting lever 6 and the release lever 6 is returned to the initial position shown in FIG. 4 by the urging force of the torsion spring 6C. , 5 is returned to the original initial position state by the action of the urging force that returns the locked state to the locked state. Further, as shown in FIG. 7, the operation link 6D is pulled by the cable 7A connected to the W / I lever 7 even when the W / I lever 7 is operated. The reclining devices 5 and 5 are unlocked by being rotated in the same manner as when pushed by the release lever 6.

  Next, the configuration of the slide release mechanism 8 will be described with reference to FIGS. As shown in FIG. 11, the slide release mechanism 8 includes an operation link 8A, a kick link 8B, and a cable 8C. The operation link 8A is rotatably connected to the inner surface of the side frame on the vehicle inner side of the seat cushion frame 3A by a connecting shaft 8A1. The kick link 8B is axially connected to the operation link 8A by a connecting shaft 8A2. The operation link 8A has a shape in which the arm piece extends in two radial directions, and is kicked by the connecting shaft 8A2 on the arm piece that extends downward in the rear direction of the seat in the initial state shown in FIG. The lower end portion of 8B is rotatably connected to the shaft. Further, a cable 8C for operating a lock release arm 33 (to be described later) for releasing the slide lock state of each slider device 30, 30 is connected to the arm piece extending in the seat front direction of the operation link 8A. Yes. Here, the operation link 8A is rotatably connected to the connecting shaft 8A1, and the connecting shaft 8A1 is integrally coupled to the seat cushion frame 3A. A torsion spring 8A3 that urges the operation link 8A to rotate counterclockwise is hooked between the operation link 8A and the locking plate 3A3 formed on the seat cushion frame 3A. As a result, the operation link 8A is normally locked at a position where the arm piece extending in the rearward downward direction of the seat contacts the lower surface of the locking plate 3A3 by the biasing force of the torsion spring 8A3. It is said that.

  The kick link 8B is formed in a U-shaped curve toward the rear of the seat, and the lower end of the figure is an arm piece that extends downward in the rear of the operation link 8A by the connecting shaft 8A2. The shaft is rotatably connected. Specifically, the connecting shaft 8A2 is integrally connected to the kick link 8B, and is rotatably connected to the operation link 8A. Between the connecting shaft 8A2 and the operation link 8A, a torsion spring 8A4 that constantly biases the kick link 8B integrated with the connecting shaft 8A2 in the clockwise direction in the figure is hooked. As a result, the kick link 8B is normally held in a state where it is locked by pressing the U-shaped curved concave surface against the connecting shaft 8A1 which is the rotation shaft of the operation link 8A by the biasing force of the torsion spring 8A4. ing.

  A round bar-like leg pin 8B1 protruding in the axial direction is provided at the upper end of the kick link 8B in the figure. As shown in FIG. 11, in the initial state, the leg pin 8B1 is moved by the forward tilting rotation of the seat back 2 by the inner kick portion 2A1b provided protruding from the front lower peripheral edge of the seat back frame 2A. It is in a state where it is exposed at a position on the coming locus. As a result, the kick link 8B provided with the leg pin 8B1 is pushed and kicked by the inner kick portion 2A1b by the operation in which the seat back 2 is tilted to the forward tilted position, as shown in FIGS. As shown in the figure, the connecting shaft 8A1 is used as a fulcrum and is integrally pushed with the operation link 8A via the connecting shaft 8A2 so as to be pushed clockwise in the drawing. Then, by the rotation of the operation link 8A, the cable 8C is pulled, and the unlocking arm 33 connected to each of the slider devices 30 and 30 is operated to slide the slider devices 30 and 30. The locked state is released. When the kick link 8B is pushed around by the inner kick portion 2A1b, as shown in FIG. 13, when the seat back 2 is locked at the forward tilted position, the leg pin 8B1 is the peripheral surface of the inner kick portion 2A1b. By being kept in a state where it rides up, it is held in a pushed state.

  However, as shown in FIG. 14, the kick link 8B is moved to a position where the inner kick portion 2A1b comes out of the interference with the leg pin 8B1 when the seat back 2 is pushed down to the large tilt position beyond the forward tilt position. After passing, both the torsion springs 8A3 and 8A4 return to the initial position before the rotation operation together with the operation link 8A. Thereby, the pulling operation state of the cable 8C connected to the operation link 8A is released, and the slider devices 30 and 30 are returned to the slide-locked state again. The kick link 8B returned to the initial position has a relationship in which the leg pin 8B1 is pushed and kicked again by the inner kick portion 2A1b due to the movement of the seat back 2 being greatly tilted to the original use position. Sometimes, the kick link 8B is independently rotated counterclockwise around the connecting shaft 8A2 against the urging force of the torsion spring 8A4, and the kick link 8B is rotated in the same direction around the connecting shaft 8A1. It does not rotate together with the operation link 8A whose rotation is locked. By the single rotation of the kick link 8B, the movement of raising the seat back 2 can be released so as not to apply an excessive tensile force or bending force to the cable 8C connected to the operation link 8A.

  Here, as shown in FIGS. 2 to 3, each of the slider devices 30, 30 is provided as a pair on the left and right between the lower part of both side frames of the seat cushion frame 3 </ b> A and the floor. Each of the slider devices 30 and 30 is fixed on the floor and extended in the front-rear direction of the seat, and is fixed to the seat cushion frame 3A and assembled in a state in which it can slide back and forth with respect to the lower rail 31. An upper rail 32 and a lock claw (not shown) that is provided on the upper rail 32 and locks the slide of the upper rail 32 by engagement with the lower rail 31. Each of the lock claws (not shown) is normally held in a state in which the slide of the upper rail 32 is locked by engaging with the lower rail 31 by the urging force of a spring (not shown) hooked between the upper rail 32 and the upper rail 32. By being operated to rotate against the urging force, the slide rail is released from the engagement with the lower rail 31 to release the above-described slide lock state.

  Each of the lock claws (not shown) is connected integrally with a connecting rod 34 between them, so that the operation of unlocking each other is performed synchronously. A lock release arm 33 is integrally coupled to an end portion of the connecting rod 34 on the vehicle inner side, and the cable 8C is connected with the operation of the slide release mechanism 8 accompanying the forward rotation of the seat back 2 described above. The lock release arm 33 is rotated through the connecting rod 34, and the lock claws are rotated through the connecting rod 34, so that the slide lock state of the slider devices 30 and 30 is released.

  Next, with reference to FIGS. 1-4 and FIGS. 6-10, the structure of the F / D button 9 and the latching mechanism 10 is demonstrated. As shown in FIGS. 1 to 3, the F / D button 9 is provided adjacent to the front side portion of the W / I lever 7 disposed at the shoulder opening portion on the vehicle outer side of the seat back 2 described above. The F / D button 9 pulls the cable 9A connected to the F / D button 9 by pushing down the F / D button 9, and an operation arm of a locking mechanism 10 described later connected to the cable 9A. 13 is pulled and operated, and the locking state at the forward tilt position of the seat back 2 by the locking mechanism 10 is released. Next, the configuration of the locking mechanism 10 will be described. As shown in FIG. 4, the locking mechanism 10 includes a support arm 11, a stopper arm 12, and an operation arm 13. As shown in FIG. 3, the support arm 11 and the stopper arm 12 are arranged on the inner surface of the side frame outside the vehicle of the seat cushion frame 3A, and the operation arm 13 is connected to the seat as shown in FIG. The cushion frame 3A is disposed on the outer surface of the side frame on the vehicle outer side.

  The support arm 11 and the operation arm 13 are integrally coupled to each other by a coupling shaft 13A, and are pivotally coupled to the side frame of the seat cushion frame 3A. As described above, the cable 9A is connected to the operation arm 13 with the F / D button 9, and when the F / D button 9 is operated, the cable 9A is operated in the counterclockwise direction shown in the figure. (See FIG. 9). As shown in FIG. 4, the support arm 11 has a shape that extends arm pieces in two radial directions, and the arm piece that extends forward on the sheet is a stopper of a stopper arm 12 described later. A tension spring 11 </ b> A is hooked between the arm cushion extending in the forward and downward direction of the seat and the seat cushion frame 3 </ b> A. Due to the biasing force of the tension spring 11A, the support arm 11 and the operation arm 13 integrated with the support arm 11 are normally rotated and biased clockwise about the connecting shaft 13A. The arm piece extending in the forward and downward direction of the seat is locked at a position where it comes into contact with the rear surface of the locking plate 3A4 formed integrally with the seat cushion frame 3A.

  The stopper arm 12 is provided so as to be rotatably connected to the side frame of the seat cushion frame 3A by a connecting shaft 12A. A tension spring 12C is hooked between the stopper arm 12 and the seat cushion frame 3A. Normally, the stopper arm 12 is urged to rotate clockwise by the urging force of the tension spring 12C. A state in which a round bar-like stopper pin 12B provided protruding in the axial direction at the front end portion is locked in a state where it is pressed against the outer peripheral surface of the arm piece extending forward on the seat of the support arm 11; Has been. The force with which the stopper pin 12B is pressed against the outer peripheral surface of the arm piece of the support arm 11 is formed by the outer peripheral surface of the support arm 11 being curved in the shape of an arc drawn around the connecting shaft 13A. Further, it acts straight in the radial direction toward the connecting shaft 13A, and is supported by the connecting shaft 13A with a strong support force.

  As shown in FIG. 4, the stopper pin 12B is moved in the initial state by the forward tilting rotation of the seat back 2 by the outer kick portion 2A1a provided protruding from the front lower peripheral edge of the seat back frame 2A. It is in a state where it is exposed at a position on the coming locus. Accordingly, as shown in FIG. 8, the stopper pin 12B comes into contact with the outer kick portion 2A1a described above when the seat back 2 is tilted to the forward tilt position, and the support pin 11B is supported via the support arm 11 described above. The forward tilt rotation of the seat back 2 is locked at the forward tilt position. The locked state of the forward rotation of the seat back 2 by the stopper pin 12B is released by the user performing an operation of pushing down the F / D button 9.

  Specifically, as shown in FIG. 9, when the F / D button 9 is pushed downward, the operation arm 13 is rotated in the counterclockwise direction around the connecting shaft 13A, and the support arm 11 is It rotates integrally with this, and is removed from the contact state with the stopper pin 12B. At this time, the support arm 11 can be removed from the contact with the stopper pin 12B with a relatively light force because the contact surface with the stopper pin 12B is the arc surface. By the above operation, the stopper arm 12 provided with the stopper pin 12B rotates in the clockwise direction in the figure by the urging force of the tension spring 12C, retracts to a position where it does not come into contact with the outer kick portion 2A1a, and the seat back 2 is tilted forward. The function to stop rotation at the position does not work. As a result, as shown in FIG. 10, the seat back 2 is tilted forward beyond the forward tilt position by its forward tilting rotational force, and is provided at the lower outer portions of the left and right sides of the seat back frame 2A. The L-shaped plates 2A2 and 2A2 are brought into a large-fall position where they are brought into contact with the stopper surfaces 3A1 and 3A1 formed on the left and right side portions of the seat cushion frame 3A and locked. The stopper arm 12 retracted by operating the F / D button 9 is released from the initial position by the strong spring force of the tension spring 11A that overcomes the tension spring 12C when the operation state of the F / D button 9 is released. While being guided by the outer peripheral surface shape (inclined surface shape) of the support arm 11 returned to the state, it is returned to the original initial position state capable of the locking function shown in FIG.

  Thus, according to the configuration of the vehicle seat 1 of the present embodiment, the vehicle seat 1 has the F / D button 9 disposed adjacent to the position after the operation of the W / I lever 7. The hand that operated the W / I lever 7 can be operated by directly applying it to the F / D button 9 as well. Therefore, the operation of the W / I lever 7 and the operation of the F / D button 9 can be performed easily and continuously with one hand. Further, since both the W / I lever 7 and the F / D button 9 are arranged at the shoulder opening portion on the vehicle outer side of the seat back 2, the user can sit on the seat on the rear row side of the vehicle seat 1. From the position where the vehicle seat 1 stands on the outside of the entrance door on the outside of the vehicle, the W / I lever 7 and the F / D button 9 are respectively applied to each operation with one hand for simple and continuous operation. To be able to do so.

  In addition, the W / I lever 7 has a lever structure that is operated by being raised to the front side of the seat at the shoulder portion of the seat back 2, and the F / D button 9 is adjacent to the front side portion of the W / I lever 7. As described above, since the operation direction of the W / I lever 7 and the F / D button 9 is the direction in which the seat back 2 is pushed down, these operations are performed. It is easy to perform, and it is possible to tilt the seat back 2 while holding the seat back 2 with the hand operating the W / I lever 7 or the F / D button 9, thereby improving the operability of tilting the seat back 2. Can be made.

  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-described embodiment, the “W / I lever 7” of the rotary operation type that is raised to the front side of the seat as the “forward tilt operation member” of the present invention is pushed down as the “largely tilting operation member” of the present invention. Although the operation type “F / D button 9” is shown, various types of operation such as a slide type, a rotary type, and a push-pull type can be applied to the operation type and operation direction of these operation members. The operation direction can also be set as appropriate in various operation directions such as the seat front-rear direction, the seat width direction, and the height direction. Further, both operation members may be of the same operation type and operation direction. Further, the location of each operation member is not limited to the shoulder opening on the vehicle outer side of the seat back shown in the above-described embodiment, but various parts in the vehicle seat such as the side portion of the seat back and the side portion of the seat cushion. Can be set to the position.

  Further, the position of the forward tilting operation member with respect to the forward tilting operation member may be disposed adjacent to the position after the operation in which the forward tilting operation member is operated, and is not adjacent to the operation direction of the forward tilting operation member. However, it should just be arrange | positioned adjacent to one of the peripheral positions in the position after the operation of the forward tilting operation member.

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2A Seat back frame 2A1a Outer kick part 2A1b Inner kick part 2A2 L-shaped board 2A3 Spiral spring 2B Cushion pad 2C Cover 3 Seat cushion 3A Seat cushion frame 3A1 Stopper surface 3A2 Locking board 3A3 Locking board 3A4 Locking plate 3B Cushion pad 3C Cover 4 Headrest 5 Reclining device 5A Ratchet 5B Guide 5C Outer ring 5D Pole 5E Slide cam 5F Hinge cam 5G Spiral spring 5H Operation shaft 5L Release arm 5R Connecting rod 6 Release lever 6A1 Corner piece 6A2 Connection shaft 6C Torsion spring 6D Operation link 6D1 Leg piece 6D2 Long hole 6E Driven link 6E1 Connection shaft 6E2 Connection shaft 7 W / I lever (forward tilt operation member)
7A cable 7B connecting shaft 7C gripping portion 8 slide release mechanism 8A operation link 8A1 connecting shaft 8A2 connecting shaft 8A3 torsion spring 8A4 torsion spring 8B kick link 8B1 leg pin 8C cable 9 F / D button (large tilting operation member)
9A Cable 10 Locking mechanism 11 Support arm 11A Tension spring 12 Stopper arm 12A Connection shaft 12B Stopper pin 12C Extension spring 13 Operation arm 13A Connection shaft 30 Slider device 31 Lower rail 32 Upper rail 33 Lock release arm 34 Connection rod

Claims (3)

A forward tilt operation member that allows the seat back to be tilted from a normal use position to a predetermined forward tilt position and locked, and the seat back is released from the locked state at the predetermined forward tilt position. A vehicular seat having a large operation member that allows the back to be largely collapsed to a position,
The large tilt operation member is provided on the seat back together with the forward tilt operation member, and is disposed adjacent to a position after the operation where the forward tilt operation member is operated with respect to the forward tilt operation member. A vehicle seat characterized by that. The vehicle seat according to claim 1,
The vehicle seat, wherein both the operation members are arranged and set in a shoulder opening portion of the seat back outside the vehicle. The vehicle seat according to claim 2,
The forward tilting operation member has a lever structure that is operated by being raised to the front side of the seat at the shoulder portion of the seat back, and the large tilting operation member is disposed adjacent to a front side portion of the forward tilting operation member. A vehicular seat characterized by having a push-type button structure.

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