JP2011225099A - Slide lock mechanism and vehicle seat with the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a proper lock or unlock state in accordance with a use or extension area and a sittable or unsittable state of a seat, while reducing costs with a simple structure.SOLUTION: The slide lock mechanism includes: a regulation device 35 configured to be in a regulatable state capable of regulating the movement of an engagement pin by engagement between an engaged part 35a1 and the engagement pin when a vehicle seat is in an extension area and in an unregulatable state incapable of regulating the movement of the engagement pin without the engagement between the engaged part 35a1 and the engagement pin when the vehicle seat is in a use area; and a switch device 34 for performing the switching while the vehicle seat is positioned in the extension area so that the engaged part 35a1 of the regulation device 35 in the regulatable state is positioned at an engagement part regulation position within a reciprocal movement range of the engagement pin when a seat cushion is in a sittable state and the engaged part 35a1 is positioned at an engagement part unregulatable position outside the reciprocal movement range of the engagement pin when the seat cushion is in a unsittable state.

Description

  The present invention relates to a slide lock mechanism and a vehicle seat provided with the slide lock mechanism.

  As a type of vehicle seat, one disclosed in Patent Document 1 is known. As shown in FIGS. 3-5 of Patent Document 1, the vehicle seat includes two types of locking means. One is an engaging claw 45 for locking the slide mechanism 14 in the enlarged region of the seat, and the other is for locking the slide mechanism 14 in order to adjust the longitudinal position of the seat in the use region. This is an engaging claw 57. The shapes of the engaging claws 45 and the engaging claws 57 are different.

JP 2005-22551 A

  According to the vehicle seat described in Patent Document 1, since two types of different engaging claws are used to lock the slide mechanism 14, the configuration is complicated, the number of parts is increased, and the cost is increased. was there.

  The present invention has been made to solve the above-described problems, and is suitable for the use area / enlarged area of the seat and the seatable state / non-seatable state while achieving a simple configuration and cost reduction.・ The purpose is to create an unlocked state.

  In order to solve the above-described problem, the structural feature of the invention according to claim 1 is that an engaging claw that releasably locks the sliding mechanism of the vehicle seat, and an engaging claw that locks the sliding mechanism. A handle for switching to an unlocking position for releasing the lock, an interlocking device that is interposed between the handle and the engaging claw and interlocks the handle and the engaging claw, and the engaging claw, the handle, and the interlocking device. An engaging part that reciprocates between a locking position corresponding to the locking position of the engaging claw and an unlocking position corresponding to the unlocking position of the engaging claw, and the engaging part is detachable. And when the vehicle seat is in the enlarged region, the engagement portion engages with the engagement portion to move the engagement portion from the unlock position to the lock position of the engagement portion. While the vehicle is in a state where it can be controlled, the vehicle seat The restriction device configured to be in an unregulatable state where the engaged portion and the engaging portion are not engaged with each other and the movement of the engaging portion from the unlocked position to the locked position cannot be restricted when the is in the use region And when the seat portion of the vehicle seat is in a seatable state in a state where the vehicle seat is located in the enlarged region, the engaged portion of the restriction device in the restrictable state is within the reciprocating range of the engagement portion. When the seating portion is in a non-sitting state, the engaged portion of the restriction device that is in the restrictable state is set to an engagement portion uncontrollable position outside the reciprocating range of the engaging portion. And a switching device that switches to be positioned.

  The structural feature of the invention according to claim 2 is that, in claim 1, the regulating device is attached so as to move integrally with the switching device.

  According to a third aspect of the present invention, the switching device according to the first or second aspect is configured such that the switching device is engaged when the vehicle seat is located in the enlarged region and the seating portion is not seated. The portion is moved along the reciprocating locus of the engaging portion, and the engaged portion is positioned at the engaging portion unregulatable position set on the extension line of the reciprocating locus.

  According to a fourth aspect of the present invention, in the third aspect, the engaging portion is rotatably supported with respect to any one of the engaging claw, the handle and the interlocking device, and the regulating device is A latch that is supported so as to be pivotable about the rotation axis of the joint portion and has an engaged portion, a pole that is pivotally supported around a rotation axis different from the latch and that releasably latches, and a rotation shaft It has a latch and a release lever that can be pivoted around to release the latched state of the pole. The latch and release lever are supported by a first locking pin that moves together with the switching device, and the pole is switched. The second locking pin that moves integrally with the apparatus is supported.

  A structural feature of the invention according to claim 5 is that in any one of claims 1 to 4, the regulating device is regulated according to a change in the area between the enlarged area and the use area of the vehicle seat. It is further provided with a switching operation device that switches to a possible state or an unregulatable state.

  According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the switching operation device is pivotally attached to the vehicle seat and is urged to return to the neutral state to rotate from the neutral state. And a lever for switching the interlocking device in accordance with the control device, and a contact that is fixed at a position corresponding to the boundary between the enlarged region and the use region on the vehicle main body side, or a contact portion of the neutral lever. A part.

  According to a seventh aspect of the present invention, in any one of the first to sixth aspects, the switching device includes a link interlocking with the seating portion, and the seating portion is in a seatable state. The switching device is switched by the link to the restrictable position of the switching device in which the engaged portion of the restricting device in the restrictable state can be positioned at the engaging portion restricting position, and the seating portion is in a non-sitting state. When the switching device is switched by the link to the unregulatable position of the switching device, the engaged portion of the regulating device in the restrictable state can be positioned at the engaging portion unregulatable position.

  A structural feature of the invention according to claim 8 is that the slide lock mechanism according to any one of claims 1 to 7 is provided.

  In the invention according to claim 1 configured as described above, when the vehicle seat is in the use region, the restricting device is provided in either the handle or the interlocking device and corresponds to the locking position of the engaging claw. And the engaging portion that reciprocates between the unlocking position corresponding to the unlocking position of the engaging claw and the engaged portion that is detachable from the engaging portion are not engaged with each other. The movement from the lock position to the lock position cannot be regulated (allowed), and the regulation is impossible. Therefore, since the engagement claw operated via the interlocking device in accordance with the operation of the handle cannot restrict (allow) the movement from the unlock position to the lock position, the engagement claw locks or slides the slide mechanism. Can be unlocked.

  On the other hand, when the seat for the vehicle seat is in the seatable state in the state where the vehicle seat is located in the enlarged region, the switching device reciprocates the engaged portion of the regulation device in the restrictable state. It is located at the engaging portion restricting position within the moving range. In other words, the engagement between the engaged part and the engaging part restricts the movement of the engaging part from the unlocked position to the locked position. Therefore, since the engagement claw is restricted from moving from the unlock position to the lock position, the engagement claw cannot lock the slide mechanism.

  Further, when the seat for the vehicle seat is in a non-seatable state with the vehicle seat positioned in the enlarged region, the switching device reciprocates the engaged portion of the restriction device in the restrictable state. The engaging portion is located at a position where the engaging portion cannot be regulated which is outside the moving range. That is, the engaged portion and the engaging portion are not engaged, and the movement of the engaging portion from the unlocked position to the locked position is not restricted (allowed). Therefore, the slide mechanism can be locked or unlocked by the engaging claw operated in accordance with the operation of the handle.

  Therefore, it is possible to form an appropriate lock / unlock state according to the use / enlargement region of the seat and the seatable / non-seatable state while achieving a simple configuration and cost reduction.

  In the invention which concerns on Claim 2 comprised as mentioned above, in Claim 1, the control apparatus is attached so that it may move integrally with the switching apparatus. Thereby, a control apparatus can be moved directly and reliably only by moving a switching apparatus.

  In the invention according to claim 3 configured as described above, in claim 1 or claim 2, the switching device is engaged when the vehicle seat is located in the enlarged region and the seating portion is not seated. The mating part is moved along the reciprocal movement locus of the engaging part, and the engaged part is positioned at the engaging part unregulatable position set on the extension line of the reciprocating movement locus. As a result, a relatively simple configuration in which the engaged portion is retracted to the engaging portion uncontrollable position set on the extension line of the reciprocating movement locus of the engaging portion is possible, and the slide lock mechanism can be miniaturized. .

  In the invention according to claim 4 configured as described above, in claim 3, the engaging portion is rotatably supported with respect to any of the engaging claw, the handle, and the interlocking device, and the regulating device includes: A latch that is supported so as to be pivotable around the rotation axis of the engaging portion, and has a engaged portion, a pole that is pivotally supported around a different rotation axis from the latch and that releasably latches, and rotation And a release lever for releasing the latched state of the latch and the pole, which is rotatably supported around the shaft. The latch and the release lever are supported by a first locking pin that moves integrally with the switching device, and the pole is A second locking pin that moves integrally with the switching device is supported. That is, since the latch, the pawl, and the release lever are all attached to the switching device, the relative rotation shafts of the latch, the pawl, and the release lever are in either the seatable state or the non-seatable state. The positional relationship does not change. Therefore, the regulating device can be configured simply and compactly, and the regulating device can be securely attached to the switching device, and high operational reliability can be obtained.

  In the invention according to Claim 5 configured as described above, in any one of Claims 1 to 4, the regulating device is provided in accordance with a change in the area between the enlargement area and the use area of the vehicle seat. A switching operation device is further provided for switching operation to a restrictable state or an unregulatable state. Thereby, according to the range in which the vehicle seat is located, it is possible to appropriately switch the regulating device to either the regulation enabled state or the regulation disabled state.

  In the invention according to claim 6 configured as described above, in claim 5, the switching operation device is rotatably attached to the vehicle seat and is urged so as to return to the neutral state. A lever that switches and operates the regulating device in conjunction with the movement, and a lever that is fixed at a position on the vehicle main body side or a position corresponding to the boundary between the enlarged region and the use region, and abuts a contact portion of the neutral lever. And a contact portion. Thereby, the position of the vehicle seat can be accurately determined with a simple configuration.

  In the invention according to Claim 7 configured as described above, in any one of Claims 1 to 6, the switching device includes a link interlocking with the seating portion, and the seating portion is in a seatable state. When the switching device is switched to the restrictable position of the switching device by which the engaged portion of the restricting device in the restrictable state can be positioned at the engaging portion restricting position by the link, At a certain time, the switching device is switched by the link to the unregulatable position of the switching device that can position the engaged portion of the regulating device in the restrictable state at the engaging portion unregulatable position. Thereby, according to the state of the seating part of the vehicle seat, the switching device can be appropriately switched to either the restrictable position or the unregulatable position with a simple configuration.

  In the invention according to claim 8 configured as described above, a vehicle seat provided with a slide lock mechanism having the functions and effects of the invention according to claims 1 to 7 described above can be provided.

1 is a side view showing a seatable state of an embodiment of a vehicle seat according to the present invention. 1 is a side view showing an embodiment of a vehicle seat according to the present invention in a non-sitting state. It is an expansion perspective view which shows a part of internal structure of the vehicle seat shown in FIG. It is a disassembled expansion perspective view which shows a part of internal structure of the vehicle seat shown in FIG. 1 is a partially enlarged side view showing a seatable state according to an embodiment of a vehicle seat according to the present invention. It is a figure which shows the action | operation when the vehicle seat in the seatable state shown in FIG. The right side is a side view and the left side is a cross-sectional view. It is a figure which shows the action | operation in case the vehicle seat in the seatable state shown in FIG. 1 moves from a use area to an expansion area. The right side is a side view and the left side is a cross-sectional view. It is a figure which shows the action | operation in case the vehicle seat in the seatable state shown in FIG. 1 moves from an expansion area | region to a use area | region. The right side is a side view and the left side is a cross-sectional view. FIG. 3 is a partially enlarged side view showing the vehicle seat according to the present invention and showing a non-sitting state. It is a figure which shows the action | operation when the vehicle seat in the seating impossible state shown in FIG. 2 exists in a use area | region. The right side is a side view and the left side is a cross-sectional view. It is a figure which shows the action | operation in case the vehicle seat in the non-sitting state shown in FIG. 2 moves from a use area to an expansion area. The right side is a side view and the left side is a cross-sectional view. It is a figure which shows the action | operation in case the vehicle seat in the seatable state shown in FIG. 2 moves from an expansion area | region to a use area | region. The right side is a side view and the left side is a cross-sectional view. It is a schematic diagram which shows other embodiment of the vehicle seat by this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of a slide lock mechanism and a vehicle seat including a slide lock mechanism according to the present invention will be described with reference to the drawings. 1 is a side view showing a seatable state of a vehicle seat, FIG. 2 is a side view showing a non-seatable state of a vehicle seat, and FIG. 3 is an enlarged perspective view showing a part of the internal structure of the vehicle seat. FIG. 4 is an exploded perspective view showing a part of the internal structure of the vehicle seat. The left-right direction in FIGS. 1 and 2 is the front-rear direction, the front direction on the paper is the left direction, and the back direction on the paper is the right direction.

  The vehicle seat 10 includes a seat base 11, a seat cushion 12 (sitting portion), a seat back 13, a slide mechanism 14, and a slide lock mechanism 15.

  The seat base 11 is fixed to the upper rails 22a and 22b of the slide mechanism 14, and the seat cushion 12 and the seat back 13 are assembled to be rotatable. The seat base 11 includes left and right plates 11a and 11b and front and rear frames 11c and 11d. The left and right plates 11a and 11b are fixed to the left and right upper rails 22a and 22b, respectively. Both ends of the front frame 11c are connected to the front ends of the left and right plates 11a and 11b, and are held in a seatable state by abutting and supporting the seat cushion 12 in a seatable state. Both ends of the rear frame 11d are connected to the rear ends of the left and right plates 11a and 11b.

  The seat cushion 12 is in a seatable state, as shown in FIGS. 1 and 5, in a state where the seat cushion 12 is positioned horizontally and a passenger can be seated. Moreover, the seat cushion 12 being in a non-sitting state is a state in which the seat cushion 12 is positioned vertically and the occupant cannot sit as shown in FIGS.

  The seat base 11 is provided at the rear end portion of the seat cushion 12 and rotatably supports both ends of a rotating shaft 12a that rotates together with the seat cushion 12 by left and right plates 11a and 11b. Further, the seat base 11 rotatably supports the lower end portion of the seat back 13 by a reclining device (not shown) provided at the rear end portions of the left and right plates 11a and 11b. The left and right plates 11a and 11b are covered with a cover 11f, respectively. The cover 11f also covers the switching device 34, the regulating device 35, and the switching operation device 37.

  The slide mechanism 14 includes a lower rail 21a and an upper rail 22a on the left side of the seat, and a lower rail 21b and an upper rail 22b on the right side, and slides the vehicle seat 10 in the front-rear direction. The left and right lower rails 21a and 21b are fixed to a floor F of a vehicle (not shown) and extend along the front-rear direction of the vehicle. The left and right lower rails 21a and 21b are disposed across the use area A1 and the enlarged area A2. The left and right upper rails 22a and 22b extend along the longitudinal direction of the vehicle and are slidably assembled to the left and right lower rails 21a and 21b. The use area A1 is an area in which the seat front-rear position can be adjusted on the premise of sitting. The expansion area A2 is an area in which the seat is moved to a position beyond the use area A1 for the purpose of expanding the cargo compartment or walking in. In the present embodiment, there is a use area A1 behind the contact portion 37c, and an enlarged area A2 ahead.

  The left and right upper rails 22a and 22b are provided with engagement holes 22c for engaging engagement claws 31 to be described later. The engagement holes 22c are provided at least by the number of the claw pieces 31b of the engagement claw 31. The left and right lower rails 21a and 21b are provided with a number of engagement holes 21c for engaging engagement claws 31 described later. The engagement hole 21c is provided in both the use area A1 and the enlarged area A2. The engagement hole 21c is provided over the entire preset range in which the vehicle seat 10 can be positioned.

  The slide lock mechanism 15 is used for positioning and locking the vehicle seat 10 at a desired position. The slide lock mechanism 15 includes an engaging claw 31, a handle 32, an interlocking device 33, a switching device 34, a regulating device 35, an engaging pin 36, and a switching operation device 37.

  The engaging claw 31 locks the slide mechanism 14 of the vehicle seat 10 so as to be releasable. One engaging claw 31 is provided on each of the left and right sides of the vehicle seat 10 and is attached to the left and right upper rails 22a and 22b so as to be rotatable around a support shaft 31a (see FIGS. 6 and 10). Yes. The engaging claw 31 has a claw piece 31b that engages with the engaging hole 21c on one end side from the support shaft 31a and a pressing portion 31c on the other end side. In the present embodiment, the claw piece 31b is composed of three claws.

  When the claw piece 31b of the engagement claw 31 engages with the engagement hole 21c of the lower rail 21a (the engagement hole 21c of the lower rail 21b on the right side), the slide mechanism 14 is positioned and fixed (locked), and the one engagement is released. Then, the positioning and fixing of the slide mechanism 14 is released (the lock is released, that is, unlocked). The engaging claw 31 is urged toward the lock position (for example, clockwise in FIG. 6) by an urging means (for example, a spring) (not shown).

  The handle 32 is for switching the engagement claw 31 between a lock position (see FIG. 6) for locking the slide mechanism 14 and an unlock position (see FIG. 7) for releasing the lock. As shown in FIG. 5, the handle 32 is attached to the left plate 11a so as to be rotatable around the support shaft 32a. The handle 32 is biased counterclockwise (see FIGS. 1, 2, 5 to 7) by a spring (not shown). When the vehicle seat 10 is in a seatable state and the handle 32 is not pulled up, the urged handle 32 is positioned at the position shown in FIGS. The handle 32 is preferably provided on the outer side of the left and right plates 11a and 11b.

  The interlocking device 33 is interposed between the handle 32 and the engaging claw 31 and interlocks the handle 32 and the engaging claw 31. The interlocking device 33 includes a link 33a, a link 33b, a connecting shaft 33c, and a lever 33d. The link 33a has one end rotatably attached to the handle 32 and the other end rotatably attached to the link. The link 33b is integrally fixed to one end of the connecting shaft 33c, and rotates around the shaft together with the connecting shaft 33c. The connecting shaft 33c is rotatably mounted on the left and right plates 11a and 11b. The lever 33d is integrally fixed to the connecting shaft 33c, and rotates around the connecting shaft 33c. The distal end portion 33d1 of the lever 33d is in contact with the pressing portion 31c of the engaging claw 31. The lever 33d is also provided on the right side.

  As shown in FIGS. 7 and 11, when the handle 32 is rotated clockwise, the link 33a is pulled upward, and the link 33b is rotated counterclockwise (see FIG. 4). At the same time, when the connecting shaft 33c is rotated counterclockwise and the lever 33d is rotated counterclockwise, the pressing portion 31c of the engaging claw 31 with which the tip 33d1 of the lever 33d is in contact is pushed down (FIG. 7). FIG. 11). Therefore, the engaging claw 31 is moved counterclockwise to move from the locked position to the unlocked position, so that the slide mechanism 14 is unlocked.

  On the other hand, when the handle 32 is rotated counterclockwise, the link 33a is pulled downward, and the link 33b is rotated clockwise (see FIG. 4). At the same time, when the connecting shaft 33c is rotated clockwise and the lever 33d is rotated clockwise, the distal end portion 33d1 of the lever 33d moves upward, so that the biased engaging claw 31 is rotated clockwise. As a result of the rotation, the pressing portion 31c moves upward (see FIGS. 6 and 10). Therefore, the engaging claw 31 is rotated clockwise to move from the unlocked position to the locked position, so that the slide mechanism 14 is locked.

  The engaging pin 36 (engaging portion) is provided in the interlocking device 33. The engagement pin 36 has a lock position corresponding to the lock position of the engagement claw 31 (see FIG. 6) and an unlock position corresponding to the unlock position of the engagement claw 31 (shown by a broken line in FIGS. 6 and 7). It reciprocates between them. A path between the lock position and the unlock position of the engagement pin 36 is a reciprocating path of the engagement pin 36.

  The engagement pin 36 is provided on the link 33b. When the link 33b rotates around the rotation axis of the connection shaft 33c, the engagement pin 36 also rotates around the rotation axis of the connection shaft 33c. That is, the engagement pin 36 is supported so as to be rotatable around the rotation axis of the connecting shaft 33c. The engaging pin 36 is inserted into a guide hole 41a formed in the switching plate 41, and reciprocates while being guided by the guide hole 41a. The guide hole 41a is a path along which the engagement pin 36 reciprocates.

  Note that the engaging pin 36 may be provided on a part other than the link 33 b in the interlocking device 33, or may be provided on the engaging claw 31 and the handle 32. The engaging portion may be an engaging hole instead of the engaging pin.

  The restricting device 35 has an engaged portion (that is, an engaging convex portion 35a1 of the latch 35a) that is detachable from the engaging pin 36. When the vehicle seat 10 is in the enlarged region A2, the restricting device 35 moves from the unlocked position of the engaging pin 36 to the locked position of the engaging pin 36 by the engagement of the engaging convex portion 35a1 and the engaging pin 36. On the other hand, when the vehicle seat 10 is in the use region A1, the engagement convex portion 35a1 and the engagement pin 36 are not engaged and locked from the unlock position of the engagement pin 36 while the movement can be restricted. The movement to the position cannot be restricted (allowed), and is in an unregulated state. The regulating device 35 is attached so as to move integrally with the switching device 34.

  Note that the vehicle seat 10 being in (located) in the enlarged region A2 means that the reference point of the vehicle seat 10 is in the enlarged region A2, and in this embodiment, the reference point is the rotation of the slide interlocking lever 37a. The axis position. In addition to this, the reference point may be, for example, the center position in the front-rear direction of the vehicle seat 10. Further, the reference point may be set at a position where the slide interlocking lever 37a gets over the contact portion 37c. Similarly, when the vehicle seat 10 is in the use region A1, it means that the reference point of the vehicle seat 10 is in the use region A1.

  Specifically, for example, the regulating device 35 includes a latch 35a, a pole 35b, and a release lever 35c.

  The latch 35a is rotatably attached to a locking pin 38a1 (first locking pin) formed coaxially on the other end side of the support shaft 38a of the switching plate 41. The locking pin 38a1 is disposed coaxially with the connecting shaft 33c. The latch 35a is formed with an engagement protrusion 35b1 of the pole 35b and an engagement protrusion 35a1 that is releasably hooked. The engaging convex portion 35a1 moves along the reciprocating movement locus of the engaging pin 36 (including not only the reciprocating path but also the extended line). The latch 35a is urged clockwise by a spring 35d having one end locked to the latch 35a and the other end locked to the locking portion 41c of the switching plate 41. The biased latch 35a is locked to the locking portion 41f of the switching plate 41 and its rotation is restricted.

  Further, the latch 35a has a long hole 35a2. The long hole 35a2 is connected to the slide interlocking lever 37a and through which an interlocking pin 37e is inserted to guide the engaging pin 37e. The engagement pin 37e contacts and engages either end of the long hole 35a2.

  The pole 35b is rotatably attached to a locking pin 41d (second locking pin) of the switching plate 41. The pawl 35b is formed with an engaging convex portion 35a1 of the latch 35a and an engaging convex portion 35b1 that is releasably hooked. The pole 35b is biased counterclockwise by a spring 35e having one end locked to the pole 35b and the other end locked to the locking portion 41e of the switching plate 41. The biased pole 35b is locked to the locking portion 41g of the switching plate 41 and its rotation is restricted. Further, an engagement pin 35b2 is formed on the pole 35b.

  The release lever 35c is rotatably attached to the locking pin 38a1 of the switching plate 41, like the latch 35a. The release lever 35c is formed with an abutting portion 35c1 that abuts on the engaging pin 35b2 of the pole 35b. The release lever 35c is urged counterclockwise by a spring 35f having one end locked to the release lever 35c and the other end locked to the locking portion 41f of the switching plate 41.

  Further, the release lever 35c has a long hole 35c2. The elongated hole 35c2 is inserted through an engaging pin 37e that is connected to and interlocked with the slide interlocking lever 37a, and guides the engaging pin 37e. The biased release lever 35c abuts on the locking pin 41h of the switching plate 41, and the counterclockwise rotation of the release lever 35c is restricted.

  Furthermore, the contact portion 35c1 is formed wide. As shown in FIG. 8, when the vehicle seat 10 in a seatable state is moved from the enlarged region A2 to the use region A1, when the contact portion 37a1 of the slide interlocking lever 37a contacts the contact portion 37c, The rear side of the contact portion 35c1 contacts the engagement pin 35b2 of the pole 35b. On the other hand, as shown in FIG. 12, when the vehicle seat 10 in a non-sitting state is moved from the enlarged area A2 to the use area A1, the contact portion 37a1 of the slide interlocking lever 37a contacts the contact portion 37c. Further, the front side of the contact portion 35c1 contacts the engagement pin 35b2 of the pole 35b. This is because the pole 35b is separated from the slide interlocking lever 37a because the switching plate 41 is in the uncontrollable position. That is, the amount of movement of the engagement pin 37e of the slide interlocking lever 37a (the amount of rotation of the release lever 35c) does not change depending on the state of the vehicle seat 10, but the pawl 35b, that is, the engagement pin 35b2 escapes from the slide interlocking lever 37a. It is.

  When the seat cushion 12 of the vehicle seat 10 is in a seatable state in a state where the vehicle seat 10 is positioned in the enlarged region A2, the switching device 34 is engaged with the engaging convex portion 35a1 ( When the seat cushion 12 is in the non-seatable state, the engagement of the restriction device 35 in the restrictable state is performed. The projection 35a1 (the engaged portion) is switched so as to be positioned at the engaging portion unregulatable position outside the reciprocating range of the engaging pin 36.

  The engagement portion restricting position indicates the position of the engagement convex portion 35a1 (engaged portion), and is within the reciprocating range of the engagement pin 36 (engagement portion) and is within the engagement pin 36. Is a position where movement from the unlock position to the lock position is restricted. Further, the position where the engaging portion cannot be regulated indicates the position of the engaging convex portion 35a1 (the engaged portion), which is outside the reciprocating range of the engaging pin 36 (engaging portion) and is the engaging pin. Reference numeral 36 denotes a position where the movement from the unlock position to the lock position cannot be restricted. The position where the engaging portion cannot be regulated in the present embodiment is a position set on an extension line of the reciprocating locus by moving the engaging convex portion 35a1 (the engaged portion) along the reciprocating locus of the engaging pin 36. It is.

  Specifically, the switching device 34 includes a switching plate 41, a lever 42, and a link 43. The switching plate 41 is rotatably attached to the base plate 38 fixed to the left plate 11a or the upper frame 22a. In other words, one end side of the support shaft 38a that is fixed to penetrate the switching plate 41 is rotatably supported by the base plate 38. A latch 35a, a pole 35b, and a release lever 35c constituting the regulating device 35 are attached to the switching plate 41 so as to move integrally.

  The lever 42 is fixed to the left end of the rotation shaft 12a of the seat cushion 12 so as to be integrally rotatable. One end (lower end) of the link 43 is rotatably attached to the switching plate 41, and the other end (upper end) is attached so as to be guided along an elongated hole 42 a formed in the lever 42.

  As shown in FIGS. 5 and 6, when the seat cushion 12 of the vehicle seat 10 is seatable, the lever 42 that rotates integrally with the seat cushion 12 pushes down the link 43, so that the switching plate 41 is switched to the switching plate 41. It has been moved to the restrictable position. Thus, when the seat cushion 12 is in the seatable state, the switching device 34 is moved to the restrictable position of the switching device 34 by the link 43.

  On the other hand, when the seat cushion 12 of the vehicle seat 10 is not seated, the lever 42 is rotated clockwise to push up the link 43 as shown in FIGS. The plate 41 has been moved to an unregulatable position. As described above, when the seat cushion 12 is not seated, the switching device 34 is moved to the unregulatable position of the switching device 34 by the link 43. In the present embodiment, the uncontrollable position of the switching device 34 is related to the engaging convex portion 35a1 (the engaged portion) when the vehicle seat 10 is located in the enlarged region A2 and the seat cushion 12 is not seated. It is a position to be positioned at the joint restriction position.

  As described above, the link 43 is a link that interlocks with the seat cushion 12. The restrictable position of the switching device 34 indicates the position of the switching device 34, and the engaging convex portion 35a1 (the engaged portion) of the restricting device 35 in the restrictable state is set as the engaging portion restricting position. It is a position that can be positioned. That is, when the switching device 34 is in the restrictable position, when the restricting device 35 is in the restrictable state (when it is), the engaging convex portion 35a1 (the engaged portion) of the restricting device 35 is engaged. The pin 36 is located at the engaging portion restriction position. Further, the unregulatable position of the switching device 34 indicates the position of the switching device 34, and the engaging convex portion 35 a 1 (engaged portion) of the regulating device 35 in the restrictable state is set to the unengageable portion regulating position. It is a position that can be located at. That is, when the switching device 34 is in the unregulatable position, when the restricting device 35 is in a restrictable state (when it is), the engaging convex portion 35a1 (the engaged portion) of the restricting device 35 is engaged. The pin 36 is located at a position where the engaging portion cannot be regulated.

  The switching operation device 37 switches the regulating device 35 between the restrictable state and the unregulatable state in accordance with the change in the region between the enlarged region A2 and the use region A1 of the vehicle seat 10. Specifically, the switching operation device 37 includes a slide interlocking lever 37a, a link 37b, and a contact portion 37c.

  The slide interlocking lever 37a is a lever that is rotatably attached to the vehicle seat 10 side and is urged so as to return to the neutral state, and the switching device is operated in conjunction with the regulating device 35 in accordance with the rotation from the neutral state. . Specifically, the slide interlocking lever 37a is rotatably attached to the locking pin 38b of the base plate 38. One end of a spring 37d that urges the slide interlock lever 37a to be maintained in a neutral state (vertical state) is locked to one end side (upper end side) of the rotation shaft (lock pin 38b) of the slide interlock lever 37a. ing. The other end of the spring 37d is locked to the locking portion 38c of the base plate 38. Abutting on the abutting portion 37c from the rotation axis (locking pin 38b) of the slide interlocking lever 37a to the other end side (lower end side) (that is, on the lower end portion of the slide interlocking lever 37a in this embodiment). A portion 37a1 is formed. One end of the link 37b is connected to the other end side (lower end side) from the rotation shaft (locking pin 38b) of the slide interlocking lever 37a. An engaging pin 37e is provided at the other end of the link 37b.

  The contact portion 37c is fixed to a boundary between the enlarged region A2 and the use region A1 or a position corresponding to the boundary on the vehicle main body side, and contacts the contact portion 37a1 of the slide interlocking lever 37a in the neutral state. Specifically, the contact portion 37 c is fixed to the floor F. The contact portion 37c is disposed at the boundary between the use area A1 and the enlarged area A2.

The operation of the slide lock mechanism 15 configured as described above will be described. The case where the vehicle seat 10 in the seatable state is in the use area A1 will be described.
As shown in FIG. 6, when the seat cushion 12 of the vehicle seat 10 is in a seatable state, the switching plate 41 is located at a restrictable position of the switching plate 41. Further, since the vehicle seat 10 is in the use area A1, the restriction device 35 is engaged without engaging the engaged portion of the restriction device 35 (that is, the engagement protrusion 35a1 of the latch 35a) and the engagement pin 36. Uncontrollable state in which movement of the coupling pin 36 from the unlocked position (indicated by the broken line in FIG. 6) to the locked position (indicated by the solid line in FIG. 6) cannot be controlled (permitted), that is, latching of the latch 35a and the pole 35b It is in the release state.

  Under this circumstance, when the handle 32 is pulled up, the engaging claw 31 that has been in the locked position moves to the unlocked position. Therefore, the lock of the slide mechanism 14 is released. On the other hand, when the handle 32 pulled up is lowered, the engaging claw 31 that has been in the unlock position moves to the lock position. Therefore, the slide mechanism 14 is locked.

A case where the vehicle seat 10 in the seatable state is moved from the use area A1 to the enlarged area A2 will be described.
When the vehicle seat 10 is moved while the handle 32 is lifted, when the contact portion 37a1 of the slide interlock lever 37a contacts the contact portion 37c, the slide interlock lever 37a in the neutral state (see FIG. 6) is It is rotated counterclockwise (see FIG. 7). Then, the engagement pin 37e is moved rearward and comes into contact with the rear end (right end in FIG. 7) of the long hole 35a2 of the latch 35a, and then the latch 35a rotates counterclockwise against the urging force. To do. At this time, the latch 35a rotates counterclockwise while the engaging protrusion 35a1 of the latch 35a pushes the engaging protrusion 35b1 of the pole 35b, that is, while rotating the pole 35b clockwise. Thereafter, when the engagement projection 35a1 of the latch 35a exceeds the engagement projection 35b1 of the pole 35b and the slide interlocking lever 37a returns to the neutral state, the engagement projection 35b1 of the pole 35b is rotated clockwise by the urging force. The engaging projection 35a1 of the latch 35a rotated in the latching manner is latched (see FIG. 7). That is, the latch 35a is restricted from rotating counterclockwise by being latched with the pole 35b, and the restricting device 35 is in a restrictable state.

  The case where the vehicle seat 10 in the seatable state is in the enlarged region A2 will be described. At this time, since the vehicle seat 10 is in the enlarged region A2, the regulating device 35 unlocks the engagement pin 36 by engaging the engagement projection 35a1 (engaged portion) of the latch 35a with the engagement pin 36. In this state, the movement of the engagement pin 36 from the lock position to the lock position can be restricted. When the seat cushion 12 of the vehicle seat 10 is in the seatable state in a state where the vehicle seat 10 is located in the enlarged region A2, the switching device 34 is engaged with the engaging convex portion of the restriction device 35 in the restrictable state. 35a1 is positioned at an engaging portion restricting position (shown by a solid line in FIG. 7) within the reciprocating range of the engaging pin 36 (see FIG. 7).

  Therefore, even if the handle 32 that has been pulled up is lowered, the engaging pin 36 contacts and is engaged with the engaged portion of the restricting device 35 (that is, the engaging convex portion 35a1 of the latch 35a) (see FIG. 7). Indicated by a solid line). Therefore, since the engagement claw 31 is restricted from moving to the lock position, the engagement claw 31 remains in the unlocked state, and the slide mechanism 14 remains in the unlocked state.

A case where the vehicle seat 10 in the seatable state is moved from the enlarged area A2 to the use area A1 will be described.
When the vehicle seat 10 is moved while the handle 32 is pulled up, the slide interlocking lever 37a in the neutral state rotates clockwise when the contact part 37a1 of the slide interlocking lever 37a contacts the contact part 37c. Is done. Then, the engagement pin 37e is moved forward, and the release lever 35c rotates clockwise against the urging force. Thereafter, when the contact portion 35c1 of the release lever 35c contacts the engagement pin 35b2 of the pole 35b, and the release lever 35c further rotates in the contact state, the pole 35b rotates clockwise. At this time, the latching state of the engaging convex portion 35b1 of the pole 35b and the engaging convex portion 35a1 of the latch 35a is gradually released, and then the latching state is completely released. Then, the latch 35a is rotated clockwise by the urging force to release the latched state, and the regulation device 35 is in a regulation impossible state (see FIG. 8). Thereafter, when the slide interlocking lever 37a returns to the neutral state, the release lever 35c is rotated counterclockwise by the urging force and comes into contact with the locking pin 41h.

Next, the case where the vehicle seat 10 in a non-sitting state is in the use area A1 will be described.
As shown in FIG. 10, when the seat cushion 12 of the vehicle seat 10 is not seated, the switching plate 41 is located at a position where the switching plate 41 cannot be regulated (shown by a solid line in FIG. 10). The unregulatable position is a position rotated by a predetermined amount in the clockwise direction from the restrictable position (indicated by a broken line in FIG. 10). Therefore, the latch 35a, the pole 35b, and the release lever 35c that are integrally attached to the switching plate 41 also move in the same manner.

  Further, since the vehicle seat 10 is in the use area A1, the restriction device 35 is engaged without engaging the engaged portion of the restriction device 35 (that is, the engagement protrusion 35a1 of the latch 35a) and the engagement pin 36. Unable to regulate (permit) the movement of the coupling pin 36 from the unlocked position (indicated by the broken line in FIG. 10) to the locked position (indicated by the solid line in FIG. 10), that is, latching of the latch 35a and the pole 35b It is in the release state. Since the engagement pin 36 does not move integrally with the switching plate 41, the unlock position and the lock position of the engagement pin 36 do not move.

  Under this circumstance, when the handle 32 is pulled up, the engaging claw 31 that has been in the locked position moves to the unlocked position. Therefore, the lock of the slide mechanism 14 is released. On the other hand, when the handle 32 pulled up is lowered, the engaging claw 31 that has been in the unlock position moves to the lock position. Therefore, the slide mechanism 14 is locked.

The case where the vehicle seat 10 in the non-sitting state is moved from the use area A1 to the enlarged area A2 will be described.
When the vehicle seat 10 is moved while the handle 32 is pulled up, the abutting portion 37a1 of the sliding interlocking lever 37a abuts on the abutting portion 37c. It is rotated counterclockwise (see FIG. 11). Then, the engagement pin 37e is moved rearward and comes into contact with the rear end (right end in FIG. 11) of the long hole 35a2 of the latch 35a, and then the latch 35a rotates counterclockwise against the urging force. To do. At this time, the latch 35a rotates counterclockwise while the engaging protrusion 35a1 of the latch 35a pushes the engaging protrusion 35b1 of the pole 35b, that is, while rotating the pole 35b clockwise. Thereafter, when the engagement projection 35a1 of the latch 35a exceeds the engagement projection 35b1 of the pole 35b and the slide interlocking lever 37a returns to the neutral state, the engagement projection 35b1 of the pole 35b is rotated clockwise by the urging force. The engaging convex portion 35a1 of the latch 35a rotated to the hook is latched (see FIG. 11). That is, the restriction device 35 is in a state capable of restriction.

  The case where the vehicle seat 10 in the non-sitting state is in the enlarged region A2 will be described. At this time, since the vehicle seat 10 is in the enlarged region A2, the regulating device 35 unlocks the engagement pin 36 by engaging the engagement projection 35a1 (engaged portion) of the latch 35a with the engagement pin 36. In this state, the movement of the engagement pin 36 from the lock position to the lock position can be restricted.

  However, the engaging projection 35b1 of the pawl 35b in the hooked state is engaged on the extended line of the reciprocating locus of the engaging pin 36 as the switching plate 41 moves to the unregulatable position. It is located at a position where it cannot be restricted (shown by a solid line in FIG. 11). Therefore, since the engaging protrusion 35a1 (engaged portion) of the latch 35a in the latched state is not provided during the movement of the engaging pin 36 from the unlocked position to the locked position, the engaging claw 31 is in the locked position. Since the movement to is not restricted (permitted), the slide mechanism 14 is locked. That is, when the raised handle 32 is lowered, the slide mechanism 14 is locked.

  Therefore, when the handle 32 is pulled up, the engaging claw 31 that has been in the locked position moves to the unlocked position. Therefore, the lock of the slide mechanism 14 is released. On the other hand, when the handle 32 pulled up is lowered, the engaging claw 31 that has been in the unlock position moves to the lock position. Therefore, the slide mechanism 14 is locked.

A case where the vehicle seat 10 in a non-sitting state is moved from the enlarged region A2 to the use region A1 will be described.
When the vehicle seat 10 is moved while the handle 32 is pulled up, the slide interlocking lever 37a in the neutral state rotates clockwise when the contact part 37a1 of the slide interlocking lever 37a contacts the contact part 37c. Is done. Then, the engagement pin 37e is moved forward, and the release lever 35c rotates clockwise against the urging force. Thereafter, when the contact portion 35c1 of the release lever 35c contacts the engagement pin 35b2 of the pole 35b, and the release lever 35c further rotates in the contact state, the pole 35b rotates clockwise. At this time, the latching state of the engaging convex portion 35b1 of the pole 35b and the engaging convex portion 35a1 of the latch 35a is gradually released, and then the latching state is completely released. Then, the latch 35a is rotated clockwise by the urging force to release the latched state (see FIG. 10).

  In the present embodiment, the restrictable state of the restricting device 35 means that when the vehicle seat 10 is in the enlarged region A2, depending on the position of the switching device 34 (depending on the state of the seat cushion 12), The engagement convex portion 35a1 is engaged with the engagement pin 36, so that the movement of the engagement pin 36 can be regulated. Specifically, the latch 35a and the pawl 35b are latched. When the seat cushion 12 is in the seatable state, the engaging convex portion 35a1 and the engaging pin 36 are engaged. On the other hand, when the seat cushion 12 is not seatable, the engaging convex portion 35a1 and the engaging pin 36 are engaged. Do not match.

  Further, the unregulatable state of the restricting device 35 means that when the vehicle seat 10 is in the use area A1, regardless of the position of the switching device 34 (regardless of the state of the seat cushion 12), the engaging protrusion of the restricting device 35 is engaged. The state where the portion 35a1 does not engage with the engagement pin 36 and the movement of the engagement pin 36 cannot be restricted, specifically, the state where the latch 35a and the pawl 35b are released.

  As is clear from the above description, when the vehicle seat 10 is in the use area A1, the restricting device 35 is provided in either the handle 32 or the interlocking device 33, and is a lock position corresponding to the lock position of the engaging claw 31. And an engaging pin 36 that reciprocates between the unlocking position corresponding to the unlocking position of the engaging claw 31, and an engaging convex portion 35 a 1 (an engaged portion to be engaged) of the latch 35 a detachably engaged with the engaging pin 36. ) Is not engaged, and the movement of the engagement pin 36 from the unlocked position to the locked position cannot be regulated (allowed). Therefore, the engaging claw 31 that is operated via the interlock device 33 according to the operation of the handle 32 cannot be regulated (allowed) from the unlocked position to the locked position. The mechanism 14 can be locked or unlocked.

  On the other hand, in a state where the vehicle seat 10 is positioned in the enlarged region A2, when the seat cushion 12 of the vehicle seat 10 is in the seatable state, the switching device 34 is engaged with the latch 35a of the restriction device 35 in the restrictable state. The mating convex portion 35a1 (the engaged portion) is positioned at the engaging portion regulating position within the reciprocating range of the engaging pin 36. That is, movement of the engagement pin 36 from the unlock position to the lock position is restricted by the engagement of the engagement convex portion 35a1 (the engaged portion) and the engagement pin 36. Therefore, since the engagement claw 31 is restricted from moving from the unlock position to the lock position, the engagement claw 31 cannot lock the slide mechanism 14.

  Further, when the seat cushion 12 of the vehicle seat 10 is in a non-seatable state with the vehicle seat 10 positioned in the enlarged region A2, the switching device 34 engages with the engaging convex portion of the restriction device 35 in the restrictable state. 35a1 (the portion to be engaged) is positioned at a position where the engaging portion cannot be regulated, which is outside the reciprocating range of the engaging pin 36. That is, the engagement convex portion 35a1 (the engaged portion) and the engagement pin 36 are not engaged, and the movement of the engagement pin 36 from the unlock position to the lock position is not restricted (permitted). Therefore, the slide mechanism 14 can be locked or unlocked by the engaging claw 31 that is operated in accordance with the operation of the handle 32.

  Therefore, it is possible to form an appropriate lock / unlock state according to the use / enlargement region of the seat and the seatable / non-seatable state while achieving a simple configuration and cost reduction.

  The regulating device 35 is attached so as to move integrally with the switching device 34. Thereby, the regulating device 35 can be moved directly and reliably only by moving the switching device 34.

  Further, when the vehicle seat 10 is located in the enlarged region A2 and the seat cushion 12 is not seated, the switching device 34 connects the engagement protrusion 35a1 (engaged portion) of the latch 35a to the engagement pin 36. It is moved along the reciprocating locus, and the engaging convex portion 35a1 (engaged portion) is positioned at the engaging portion uncontrollable position set on the extension line of the reciprocating locus. As a result, a relatively simple configuration is possible in which the engaging convex portion 35a1 (the engaged portion) is retracted to the engaging portion unregulatable position set on the extension line of the reciprocating movement locus of the engaging pin 36. The mechanism 15 can be reduced in size.

  Further, the engagement pin 36 is rotatably supported with respect to any of the engagement claw 31, the handle 32, and the interlocking device 33, and the regulation device 35 is rotatable about the rotation axis of the engagement pin 36. A latch 35a that is supported and has an engaged portion, a pole 35b that is rotatably supported around a rotation axis different from the latch 35a and that releasably latches the latch 35a, and a support that is rotatable about the rotation axis. The latch 35a and the release lever 35c for releasing the latched state of the pole 35b are provided. The latch 35a and the release lever 35c are supported by the first locking pin 38a1 that moves integrally with the switching device 34, and the pole 35b is A second locking pin 41g that moves integrally with the switching device 34 is supported. That is, since the latch 35a, the pawl 35b, and the release lever 35c are all attached to the switching device 34, the latch 35a, the pawl 35b, and the release lever 35c are both seated and unseatable. The relative positional relationship of the rotating shafts of these does not change. Therefore, the regulating device 35 can be configured simply and compactly, and the regulating device 35 can be reliably attached to the switching device 34 and high operational reliability can be obtained.

  In addition, a switching operation device 37 that switches the regulating device 35 between the restrictable state and the unregulatable state according to a change in the region between the enlarged region A2 and the use region A1 of the vehicle seat 10 is further provided. Thereby, according to the range in which the vehicle seat 10 is located, the restriction device 35 can be appropriately switched to either the restrictable state or the uncontrollable state.

  Further, the switching operation device 37 is attached to the vehicle seat 10 so as to be pivotable and is urged so as to return to the neutral state. The slide operation interlocks the regulation device 35 in accordance with the rotation from the neutral state. A lever 37a, and a contact portion 37c that is fixed to a position corresponding to the boundary between the enlarged region A2 and the use region A1 on the vehicle main body side and that contacts the contact portion 37a1 of the slide interlocking lever 37a in the neutral state. I have. Thereby, the position of the vehicle seat 10 can be accurately determined with a simple configuration.

  Further, the switching device 34 includes a link 43 that interlocks with the seat cushion 12, and when the seat cushion 12 is in a seatable state, the switching device 34 is engaged by the link 43 with the engaging convex portion of the regulating device 35 that is in a regulating state. When the seat cushion 12 is in a non-seatable state when the switching device 34 is switched to the restrictable position of the switching device 34 that can position 35a1 (the engaged portion) in the engaging portion restricting position, the switching device 34 is The engaging projection 35a1 (engaged portion) of the restricting device 35 that is in the restrictable state is switched to the unregulatable position of the switching device 34 that can be positioned at the engaging portion unregulatable position. Thereby, according to the state of the seat cushion 12 of the vehicle seat 10, the switching device 34 can be appropriately switched to either the restrictable position or the unregulatable position with a simple configuration.

  Moreover, the vehicle seat provided with the slide lock mechanism 15 which has the effect | action and effect by this embodiment mentioned above can be provided.

  In the above-described embodiment, the engaging portion is configured by the engaging pin 36, but may be configured by an engaging hole. In this case, for example, the engagement hole may be constituted by a long hole formed in the coupling device 33. Moreover, what is necessary is just to provide the engaging convex part inserted in the guide hole 41a of a switching plate in the control apparatus 35 (for example, latch 35a).

  In the above-described embodiment, the restriction device 35 is configured by the latch 35a, the pole 35b, and the release lever 35c. However, the restriction device 35 is not limited thereto, and can be engaged with and disengaged from the engagement pin 36 (engagement portion). When the vehicle seat 10 is in the enlarged region A2, the engagement pin 36 is engaged with the engagement pin 36 from the unlock position of the engagement pin 36 when the vehicle seat 10 is in the enlarged region A2. On the other hand, when the vehicle seat 10 is in the use region A1, the engaged portion and the engagement pin 36 are not engaged with each other, and the engagement pin 36 is unengaged. The thing of the other structure comprised so that it may become an unregulated state which cannot restrict | limit the movement from a lock position to a lock position may be sufficient. For example, the restriction device may be configured to include an engaged portion that advances and retreats in a direction that intersects the reciprocating path of the engaging portion.

  Specifically, as shown in FIG. 13, a restriction device 135 may be provided instead of the restriction device 35 described above, and a switching device 134 may be provided instead of the switching device 34. The engagement pin 36 reciprocates between a locked position (indicated by a broken line in FIG. 13) and an unlocked position (indicated by a solid line in FIG. 13).

  Like the regulating device 35, the regulating device 135 has an engaged portion 135a that is detachable from the engaging pin 36 (engaging portion), and is engaged when the vehicle seat 10 is in the enlarged region A2. The state in which the movement from the unlock position of the engagement pin 36 to the lock position of the engagement pin 36 can be restricted by the engagement of the portion 135a and the engagement pin 36 (FIGS. 13A and 13C) On the other hand, when the vehicle seat 10 is in the use region A1, the engaged portion 135a and the engagement pin 36 are not engaged, and the movement of the engagement pin 36 from the unlock position to the lock position is restricted. It is a control apparatus comprised so that it may become the uncontrollable state (FIG.13 (b), (d)) which cannot be performed.

  The restriction device 135 is provided on the switching device 134 and is configured to be able to advance and retract in the vertical direction of the drawing. An engaged portion 135 a that can engage with the engagement pin 36 is provided at the upper end portion of the restriction device 135. The regulating device 135 is positioned and fixed in the extended state (FIGS. 13A and 13C), and is positioned and fixed in the contracted state (FIGS. 13B and 13D). In the extended state, the engaged portion 135a can engage with the engaging pin 36, and is in the restrictable state described above. In the contracted state, the engaged portion 135a cannot be engaged with the engaging pin 36, and is in the above-described unregulated state.

  The switching device 134 is configured to reciprocate substantially parallel to the reciprocal movement locus of the engagement pin 36. When the seat cushion 12 is in a seatable state in a state where the vehicle seat 10 is positioned in the enlarged region A2, the switching device 134 is configured to set the engaged portion 135a of the restriction device 135 in the restrictable state as described above. When the seat cushion 12 is in a non-seatable state when it is switched to the restrictable position (FIG. 13 (a)) of the switching device 134 that can be positioned at the joint restriction position (FIG. 13 (a)). The engaged portion 135a of the regulating device 135 is switched to the unregulatable position (FIG. 13C) of the switching device 134 that can position the engaged portion 135a in the engaging portion unregulatable position (FIG. 13C).

  Note that the switching device 134 is in the same position as the state in which the vehicle seat 10 is positioned in the enlarged region A2 when the seat cushion 12 is in the seatable state in the state where the vehicle seat 10 is positioned in the use region A1 (see FIG. 13 (b)), when the seat cushion 12 is in a non-sitting state, the vehicle seat 10 is switched to the same position (FIG. 13 (d)) as in the state where the vehicle seat 10 is positioned in the enlarged region A2.

  Further, the position where the engaging portion cannot be regulated of the regulating device may not be on the extension line of the reciprocating locus of the engaging portion, but may be a side portion of the reciprocating locus.

  In addition, the switching device described above is configured to move along the reciprocating path of the engaging portion, but other than this, the switching device may be configured to move along a direction perpendicular to the reciprocating path of the engaging portion. Good.

  DESCRIPTION OF SYMBOLS 10 ... Vehicle seat, 11 ... Seat base, 11a, 11b ... Left and right plates, 11c, 11d ... Front and rear frames, 12 ... Seat cushion, 13 ... Seat back, 14 ... Slide mechanism, 15 ... Slide lock mechanism, 21a, 21b ... Lower rail, 22a, 22b ... upper rail, 21c, 22c ... engagement hole, 31 ... engagement claw, 31a ... support shaft, 31b ... claw piece, 31c ... pressing part, 32 ... handle, 33 ... interlocking device, 33a, 33b ... Link, 33c ... Connecting shaft, 33d ... Lever, 34, 134 ... Switching device, 35, 135 ... Restricting device, 35a ... Latch, 35a1 ... Engaging projection (engaged portion), 35b ... Pole, 35b1 ... Engaging Projection, 35c ... Release lever, 36 ... Engagement pin (engagement part), 37 ... Switching actuator, 37a ... Slide interlocking lever, 37b ... Link, 37 ... abutting part, 38 ... base plate, 38a ... support shaft, 38a1 ... locking pin (first locking pin), 41 ... switching plate, 41a ... guide hole, 41d ... locking pin (second locking pin), 42 ... Lever, 43 ... Link, F ... Floor.

Claims (8)

An engaging claw that releasably locks the sliding mechanism of the vehicle seat;
A handle for switching the engagement claw between a lock position for locking the slide mechanism and an unlock position for releasing the lock;
An interlocking device that is interposed between the handle and the engaging claw and interlocks the handle and the engaging claw;
A reciprocating motion is provided between a locking position corresponding to a locking position of the engaging claw and an unlocking position corresponding to an unlocking position of the engaging claw provided on any of the engaging claw, the handle and the interlocking device. An engaging portion to
When the vehicle seat is in the enlarged region, the engagement portion is unlocked by the engagement between the engagement portion and the engagement portion when the vehicle seat is in the enlarged region. On the other hand, when the vehicle seat is in the use region, the engaged portion and the engaging portion do not engage with each other while the movement from the position to the lock position of the engaging portion can be restricted. A restricting device configured to be in an unregulatable state in which movement of the engaging portion from the unlock position to the lock position cannot be restricted;
When the seat for the vehicle seat is in a seatable state in a state where the vehicle seat is positioned in the enlarged region, the engaged portion of the restriction device in the restrictable state is reciprocated by the engagement portion. When the seating portion is in a non-sitting state and is positioned at the engaging portion restriction position that is within the movement range, the engaged portion of the restriction device that is in the restriction state is outside the reciprocation range of the engagement portion. A switching device that switches so as to be located at the position where the engaging portion cannot be regulated,
A slide lock mechanism characterized by comprising:   2. The slide lock mechanism according to claim 1, wherein the restriction device is attached so as to move integrally with the switching device.   3. The switching device according to claim 1, wherein when the vehicle seat is located in the enlarged region and the seating portion is not seated, the switching device moves the engaged portion back and forth. A slide lock mechanism configured to move along a trajectory and to position the engaged portion at a position where the engaging portion cannot be regulated set on an extension line of the reciprocating trajectory. In claim 3,
The engaging portion is rotatably supported with respect to any of the engaging claw, the handle and the interlocking device,
The restricting device is supported so as to be rotatable about a rotation axis of the engaging portion and is provided with the engaged portion, and is supported to be rotatable about a rotation axis different from the latch so that the latch can be released. A pawl to be latched, and a latch that is rotatably supported around the rotation shaft and a release lever that releases the latching state of the pawl;
The latch and the release lever are supported by a first locking pin that moves integrally with the switching device, and the pole is supported by a second locking pin that moves integrally with the switching device. Slide lock mechanism to do.   5. The switching device according to claim 1, wherein the restriction device is switched to the restrictable state or the unregulatable state in accordance with a change in the region between the enlarged region and the use region of the vehicle seat. A slide lock mechanism further comprising a switching operation device to be operated. In claim 5,
The switching operation device is pivotally attached to the vehicle seat and biased to return to the neutral state, and the switching device is operated in conjunction with the regulating device according to the rotation from the neutral state, And a contact portion that is fixed to a boundary between the enlarged region and the use region or a position corresponding to the boundary and contacts the contact portion of the neutral lever. Slide lock mechanism to do. In any one of Claims 1 thru | or 6, The said switching apparatus is provided with the link interlock | cooperated with the said seating part,
When the seating portion is in the seatable state, the switching device can position the engaged portion of the restricting device in the restrictable state at the engaging portion restricting position by the link. Can be switched to
When the seating portion is in the non-seatable state, the switching device can switch the engaged portion of the restriction device in the restrictable state to the engagement portion unrestricted position by the link. A slide lock mechanism that can be switched to an unregulatable position of the apparatus.   A vehicle seat comprising the slide lock mechanism according to any one of claims 1 to 7.

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