JP2008201235A - Unlocking mechanism for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the manipulability of a series of operations for forwardly tilting a seat back and also for unlocking engagement of a vehicle seat with a floor with the seat back forwardly tilted. <P>SOLUTION: In this unlocking mechanism, when a second operation member 40 is engaged with a first operation member 30 by an engagement pin P, the second operation member 40 is integrally rotated with the first operation member. Before the seat back 2 is forwardly tilted, the first operation member 30 and second operation member 40 are mutually engaged by the engagement pin P. The first and second operation members are integrally rotated, thereby the fixed back rest angle of the seat back 2 is made free. When the first operation member 30 is further rotated, the movement of the second operation member 30 in the same direction is regulated and also the rotation of the first operation member 30 is regulated. When the seat back 2 is forwardly tilted, the first and second operation members are disengaged from each other. The first operation member 30 is further rotated to thereby unlock engagement of the vehicle seat with the floor. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a vehicle seat unlocking operation mechanism. More specifically, the present invention relates to a vehicle seat unlocking operation mechanism that moves the seat back of the vehicle seat forward and operates so that the vehicle seat can be released from the locked engagement state with the floor in a state where the seat back is tilted forward.

Conventionally, some vehicle seats are provided with a function of switching the seat to a retracted posture state so as to free up the space in which the seat is installed. This storage function is activated by operating an operation lever provided on the seat. Specifically, first, the locked state of the reclining device is released by operating the operation lever. As a result, the seat back is moved forward and the seat is switched to the folded state. Then, by further operating the operation lever, the locked state of the lock device that engages the seat and the floor is released. As a result, the entire sheet in the folded posture state is raised from the floor or dropped into a recess on the floor, and the sheet is stored.
Here, the following Patent Document 1 discloses a technique that provides a function for preventing a malfunction that prevents the seat from being moved when the seat back is not brought forward when the seat is stored. . In this disclosure, by operating the first lever provided for unlocking the reclining device, the locked state of the reclining device is released and the seat back is moved forward. In conjunction with this movement, the second lever provided for unlocking the locking device that engages the seat with the floor is switched to an operable state. Therefore, by operating the second lever from this state, the engagement state between the seat and the floor is released, so that the seat can be moved from the installation position on the floor to the storage position.

JP 2001-347864 A

  However, in the related art disclosed above, it is possible to prevent malfunction when the sheet is retracted and moved, but the two operation levers have to be operated in sequence, which is troublesome.

  The present invention was created to solve the above-described problems, and the problem to be solved by the present invention is that the seat back of the vehicle seat is moved forward and the seat back of the vehicle seat is moved forward. It is intended to improve the operability of a series of operations for enabling removal from the locked engagement state with the floor.

In order to solve the above problems, the vehicle seat unlocking operation mechanism of the present invention takes the following means.
The first aspect of the present invention is to unlock the vehicle seat that operates to move the seat back of the vehicle seat forward and to release the vehicle seat from the engagement lock state with the floor when the seat back is tilted forward. Operation mechanism. The unlocking operation mechanism includes a first operation member, a second operation member, and an engagement / disengagement mechanism. The 1st operation member is provided in the vehicle seat so that rotation operation is possible. The second operation member is rotated integrally with the second operation member by engaging with the first operation member. The engagement / disengagement mechanism has a configuration in which the first and second operation members can be integrally engaged with or detached from each other in the rotation direction. This engagement / disengagement mechanism is in a state where the first and second operation members are integrally engaged with each other in the rotation direction at a normal time before the seat back is moved forward. The fixed state of the backrest angle of the seat back is released by rotating the first operating member integrally with the second operating member to the first rotating position. By rotating the first operation member to the second rotation position that is further rotated than the first rotation position, the movement of the second operation member in the same rotation direction is restricted, The first operating member is also restricted in its movement. When the seat back from which the fixed state of the backrest angle is released is moved forward, the engagement state of the first and second operation members is released by the operation of the engaging / disengaging member in conjunction with the movement. It has become. Then, the engagement lock state between the vehicle seat and the floor is released by further rotating the first operation member disengaged from the engagement with the second operation member from the second rotation position. It is configured to be operated as follows.
According to the first aspect of the present invention, the fixed state of the backrest angle of the seat back is released by rotating the first operating member to the first rotation position. The first operation member is rotated to the second rotation position, so that the rotation of the second operation member is restricted. Therefore, the movement of the rotation operation is restricted. Become. However, the first operating member is released from the engaged state with the second operating member by the operation of the engagement / disengagement mechanism when the seat back released from the fixed state is tilted forward. As a result, the first operation member can be further rotated from the second rotation position. Therefore, by further rotating the first operation member from the second rotation position, the engagement lock state between the vehicle seat and the floor is released.

Next, in a second aspect based on the first aspect described above, the operation for releasing the fixed state of the seat back backrest angle is a second operation in which the operation is rotated integrally with the first operation member. The operation member is operated by pushing and turning the operation release member for releasing the fixed state of the seat back backrest angle. The release member is held at an initial rotational operation position in which the backrest angle of the seat back is always fixed by urging. Then, the release member is operated to release the fixed state of the backrest angle by being pushed around the second operation member against this urging. In a state where the seat back is moved forward by the release operation of the release member and the first and second operation members are disengaged from each other, the release member pushes the second operation member back by urging and the initial rotation The movement returning toward the operating position is elastically received by the urging force of an elastic member such as a spring member provided between the second operating member and the first operating member. It has become.
According to the second aspect of the present invention, the release member is pushed against the second operating member against the bias, thereby releasing the fixed state of the backrest angle of the seat back. The release member is configured to perform an initial rotation operation while pushing back the second operation member by urging by releasing the engagement between the first operation member and the second operation member by moving the seat back forward. It will be returned to the position. At this time, the movement of the release member returning to the initial rotational operation position is elastically received by the urging force of an elastic member such as a spring member via the second operation member.

Next, according to a third aspect, in the second aspect described above, the movement of the release member returned from the position where the release member is released to the initial rotational operation position by the biasing force is pushed back by the release member. The movement of the rotating second operation member is abutted against and regulated by the first operation member, so that the second operation member is stopped at a position in the middle of being returned to the initial rotation operation position.
According to the third aspect of the invention, the movement of the release member returned to the initial rotation operation position is caused by the movement of the second operation member that is pushed back and rotated against the first operation member. Stopped by being hit and regulated. As a result, the movement of the release member returned to the initial rotational operation position by the urging is stopped at a midway position.

Next, a fourth invention is the vehicle seat according to any one of the first to third inventions described above, wherein the seat back is moved forward and the engagement lock state with the floor is released, so that the seat is In a folded posture with the back folded down, it can be stored and moved from the installation position on the floor to the storage position in the passenger compartment.
According to the fourth aspect of the invention, the vehicle seat is engaged with the floor after the seat back is first moved forward and switched to the folded posture by rotating the first operating member. Is removed. Therefore, an erroneous operation does not occur when the vehicle seat is stored in the storage position as a compact posture with the seat back folded.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first invention, since the restriction state of the rotation operation of the first operating member can be changed by the movement of the seat back being moved forward, the vehicle must be in a state where the seat back is not moved forward. The engagement lock state between the seat and the floor can be prevented from being removed. Therefore, since the above movement can be performed without malfunction only by the stepwise rotation operation of the first operation member in this way, the engagement lock state between the vehicle seat and the floor is released. A series of operations can be easily performed.
Furthermore, according to the second invention, the movement of the release member returned to the initial rotational operation position by the biasing is elastically received by the biasing force of the elastic member such as the spring member. It is possible to attenuate the movement of the release member with a bounce, and to suppress the generation of interference sound (abnormal noise).
Furthermore, according to the third aspect of the present invention, the movement of the release member that is returned to the initial rotational operation position by the biasing can be stopped at the midway position, so that the movement of the release member is boosted. Can be stopped at an early stage, and the effect of suppressing the occurrence of interference noise (abnormal noise) can be enhanced.
Furthermore, according to the fourth aspect of the invention, any one of the first to third aspects of the invention is applied to a retractable vehicle seat retracting operation structure, so that the vehicle seat is stored in a compact posture. The operation of storing in the position can be easily performed without malfunction.

  Embodiments of the best mode for carrying out the present invention will be described below with reference to the drawings.

First, the configuration of the vehicle seat unlocking operation mechanism of the first embodiment will be described with reference to FIGS.
Here, FIG. 1 is a perspective view showing a schematic configuration of the vehicle seat 1 of the present embodiment. The vehicle seat 1 includes a seat back 2 serving as a backrest portion and a seat cushion 3 serving as a seating portion. Here, the seat back 2 is connected to the seat cushion 3 by the reclining devices 10 and 10 provided at the lower portions of both sides in the width direction.
These reclining devices 10 and 10 are normally held in a locked state in which the backrest angle of the seat back 2 is fixed. And each reclining device 10 and 10 performs said rotation operation of the operation lever L arrange | positioned in the lower position of the left side (side shown in the figure front side) of the seat cushion 3 above-mentioned. The lock state is released. Here, each of the reclining devices 10 and 10 has a configuration in which operation parts for unlocking each other are connected by rod parts (not shown) so that the switching operation of the lock and release is performed synchronously on the left and right. It has become. Therefore, by rotating the operation lever L, the locked state of the reclining devices 10 and 10 is released and the fixed state of the backrest angle of the seat back 2 is released, so that the adjustment movement of the backrest angle can be performed. You can do it.

Here, a spring member (not shown) is hooked between the seat back 2 and the seat cushion 3, and is normally urged in the forward rotation direction. Therefore, when the operation lever L is turned in a state where no occupant is seated on the vehicle seat 1, the seat back 2 is automatically pushed forward by the above-described urging and folded on the upper side of the seat cushion 3. It is supposed to be included.
By the way, each of the reclining devices 10 and 10 described above is normally biased toward the operation direction that is locked, and is automatically returned to the locked state when the operation of the operation lever L is stopped. It is supposed to be. However, these reclining devices 10 and 10 further include a lock zone that is returned to the locked state by stopping the turning operation of the operating lever L, and a free zone that is not returned to the locked state even if the turning operation of the operating lever L is stopped. And are set. The former lock zone is normally set in an angular region that is used as a backrest by the occupant seated in the vehicle seat 1, and the seat back 2 is in a fully upright position and the seat back 2 is fully rearward. It is set in the area between the pivot position where it is pushed down. The latter free zone is set in an angular region where the occupant is not seated and used, and the rotation position where the seat back 2 is in an upright position and the rotation when the seat back 2 is fully pushed forward. It is set in the area between the moving position.
Therefore, when the seat back 2 is moved forward, the operation lever L is rotated, so that if the seat back 2 is tilted slightly forward, the seat back 2 can be operated without continuing the operation of the operation lever L. 2 is automatically pushed down to the position where it is folded over the seat cushion 3.

By the way, the vehicle seat 1 is further operated after the seat back 2 is turned down and switched to the folded posture by rotating the operation lever L, and then the vehicle seat 1 and the floor F are further Is disengaged, and the vehicle seat 1 is flipped up to the retracted position on the vehicle side (window side). Here, the state in which the seat back 2 is pushed down is shown by a solid line state in the figure, and the state in which the vehicle seat 1 is flipped up to the storage position on the side of the vehicle is a hypothetical state in the figure. Shown in line state.
That is, by operating only one control lever L, the vehicle seat 1 installed on the floor F is stored in a storage position on the side of the vehicle in a compact posture state in which the seat back 2 is folded. can do. Thereby, the space on the floor F on which the vehicle seat 1 is installed can be made free, and the installed space can be effectively used as a luggage space or the like.

The vehicle seat 1 is engaged and disengaged with respect to the floor F by an engaging / disengaging structure described below.
In other words, the vehicle seat 1 is normally locked in engagement with the floor F by the lock devices 5 and 5 and the hinge device 6 respectively disposed at the lower portions of both sides of the seat cushion 3. . The former locking devices 5 and 5 are arranged side by side in the front-rear direction along the lower edge of the support plate 4 erected on the lower surface of the left side of the seat cushion 3. The latter hinge device 6 is installed in such a manner as to pivotally support the right side (the side on the side shown in the figure) of the seat cushion 3 so that the seat cushion 3 can be turned upside down.
Specifically, each of the locking devices 5 and 5 includes hooks 5F and 5F that can be engaged with and disengaged from the frame-shaped strikers S and S that are arranged on the floor F in the front-rear direction. The hooks 5F and 5F are respectively engaged with the strikers S and S in conjunction with the movement of the lock devices 5 and 5 being pushed into the strikers S and S, and are locked in the engaged state. Yes. Here, each of the locking devices 5 and 5 provided with the hooks 5F and 5F is connected to an operation lever L via an operation cable CA described later with reference to FIG. As a result, the locking devices 5 and 5 are normally in a state in which the hooks 5F and 5F are engaged and locked with the strikers S and S, respectively. The engagement state of 5F and 5F is released.

Next, the support plate 4 is pivotally supported so that the plate-shaped upper end edge portion of the support plate 4 can be rotated up and down with respect to the seat cushion 3. As a result, the support plate 4 rises and falls between a posture state (solid line state) erected on the lower surface side of the seat cushion 3 and a posture state (virtual line state) folded on the lower surface side of the seat cushion 3. It can be rotated. Here, a spring member (not shown) is hooked between the support plate 4 and the seat cushion 3, and is normally urged in a rotational direction in which the support plate 4 is folded on the lower surface side of the seat cushion 3. Therefore, the support plate 4 is automatically folded on the lower surface side of the seat cushion 3 by releasing the engagement lock between the lock devices 5 and 5 and the strikers S and S.
On the other hand, the hinge device 6 provided on the right side of the seat cushion 3 hinges the seat cushion 3 to a member on the floor F side, and the installation position and floor where the seat cushion 3 is laid down on the floor F It can be turned upside down between the storage position raised from F and stood up. Here, a spring member that urges the seat cushion 3 in the direction to be raised from the floor F is assembled to the hinge device 6. As a result, the vehicle seat 1 is automatically raised from the floor F by releasing the engagement lock of the lock devices 5 and 5 by the turning operation of the operation lever L.

By the way, the operation structure of the operation lever L is provided with a mechanism for preventing malfunction so that the engagement lock between the vehicle seat 1 and the floor F is not released unless the seat back 2 is tilted forward. Yes. Hereinafter, the operation structure of the operation lever L will be described in detail.
Here, in FIG. 2, the operation structure of the operation lever L is shown by an internal structure diagram viewed from a cross section taken along line II-II in FIG. 1.
As shown in the figure, first, the reclining device 10 described above is disposed so as to be sandwiched between plate surfaces of a back frame 2F that forms the skeleton of the seat back 2 and a cushion frame 3F that forms the skeleton of the seat cushion 3. The two are connected to each other. The reclining device 10 is configured such that its operating state is switched between a locked state and a released state by the movement of the operating shaft 11 inserted through the center of the reclining device 10. The operation shaft 11 is provided from the inside of the reclining device 10 so as to penetrate the outer cushion frame 3F, and is integrated with the upper end portion of the link arm-shaped release member 12 at the tip through the cushion frame 3F. Connected. As a result, the reclining device 10 is configured such that the operating state is switched as described above in accordance with the movement of the release member 12 being rotated about the operation shaft 11.

The release member 12 is always in an initial rotation operation position in which the reclining device 10 is locked by a biasing force of a spring member (not shown) assembled to the reclining device 10 before the operation lever L is rotated. (Shown position). As shown in FIG. 3, the release member 12 is rotated in the clockwise direction in the figure against the urging force to release the locked state of the reclining device 10.
When the release member 12 is rotated in the clockwise direction, a protruding pin 12P provided at the lower end portion of the release member 12 so as to protrude in the plate thickness direction is provided on the long jaw portion 45 of the second operation member 40 described later. This is done by being pushed. Then, as shown in FIG. 5, the turning operation of the release member 12 is performed such that the locking projection 12S protruding from the upper end portion of the drawing is in contact with the operation stopper 3T formed on the cushion frame 3F. It is regulated by touching. The position where the locking protrusion 12S and the operation stopper 3T are in contact with each other is that the release member 12 is further rotated in the clockwise direction in the drawing than the position where the locked state of the reclining device 10 is released (see FIG. 3). Is in position.

Returning to FIG. 2, the cushion frame 3 </ b> F is assembled with component parts for performing the rotation operation of the release member 12 described above.
More specifically, first, a flat base plate 20 for assembling each component is integrally fixed to the cushion frame 3F. The base plate 20 includes an upper rotation stopper 21 for restricting the rotation of the pull-up link 80 (described later) in the clockwise direction in the figure, and the illustrated clocks of the first operation member 30 and the third operation member 50. A right-side rotation stopper 22 for restricting rotation in the rotation direction is formed.
The former upper rotation stopper 21 is formed at the upper left end position of the base plate 20 in the drawing, and the latter right rotation stopper 22 is formed at the right end portion of the base plate 20 in the drawing. . The end portion of the outer member C2 of the operation cable CA is hooked and fixed to the base plate 20 on the cable hooking portion 23 formed at the end portion position on the left side in the drawing.
The upper rotation stopper 21, the right rotation stopper 22, and the cable hooking portion 23 are formed by partially bending a part of the base plate 20 in the plate thickness direction.

A flat plate-like first operating member 30 is pivotally supported on the base plate 20 by a connecting shaft A1. Here, the connecting shaft A <b> 1 is integrally fixed to the base plate 20, and pivotally supports the first operating member 30 in a rotatable manner.
The operation lever L described above is integrally welded and fixed to the first operation member 30. Then, a double-sided rotation for restricting bidirectional rotation of the second operation member 40 to be described later is provided at a position on the lower edge side of the first operation member 30 in the vicinity of the rotation center (connection shaft A1). A stopper 31 is formed. The double-sided rotation stopper 31 is formed by partially bending a part of the first operation member 30 in the plate thickness direction.
At the end position on the upper right side of the first operating member 30 shown in the drawing, when the third operating member 50 is returned to the initial position, a return operating portion 32 is formed by rotating the third operating member 50 in the clockwise direction and pushing it back. Has been. As the first operating member 30 rotates in the clockwise direction in the drawing, the return operating portion 32 comes into contact with the upper locking portion 52 formed on the third operating member 50 and pushes it in the same direction. It comes to move.
A long hole 30 </ b> H that extends straight from the periphery of the first operating member 30 toward the rotation center (connection shaft A <b> 1) is formed at the upper end portion of the first operation member 30. The long hole 30 </ b> H is formed through the first operating member 30 in the thickness direction.

A flat plate-like second operation member 40 is pivotally supported on the connecting shaft A1 that pivotally supports the first operation member 30.
The second operating member 40 is disposed with its plate surface parallel to the first operating member 30 and is capable of rotating relative to the first operating member 30 about the connecting shaft A1. It is assembled to.
A torsion spring S <b> 1 is hooked between the second operating member 40 and the first operating member 30. Here, the torsion spring S1 corresponds to the elastic member of the present invention. The torsion spring S1 is provided around the connecting shaft A1. One end of the torsion spring S 1 is hooked on a spring hook 41 formed on the second operation member 40, and the other end is part of the double-sided rotation stopper 31 of the first operation member 30. It is hooked on the formed spring hook 31A. As a result, the second operating member 40 is normally urged to rotate relative to the first operating member 30 counterclockwise by the urging force of the torsion spring S1.
Here, the outer peripheral edge shape on the lower right side of the second operation member 40 in the figure is partially formed in a shape recessed inward in the radial direction. Thereby, the lower surface latching | locking part 42 and the upper surface latching | locking part 43 are formed in the both sides of the hollow. The double-sided rotation stopper 31 formed on the first operation member 30 described above enters the recess between the lower surface locking portion 42 and the upper surface locking portion 43. As a result, the second operation member 40 is rotated counterclockwise relative to the first operation member 30 by the biasing of the torsion spring S1 as described above. It is regulated at a position where it comes into contact with 31. Note that the second operating member 40 is locked on its upper surface by rotating it relative to the first operating member 30 in the clockwise direction in the figure against the bias of the torsion spring S1, for example. The rotation in the same direction is restricted at the position where the portion 43 and the double-sided rotation stopper 31 abut.

A short jaw portion 44 that protrudes short outward in the radial direction and a long jaw portion 45 that protrudes longer than this are spaced apart from each other in the circumferential direction at a portion on the upper edge side of the second operation member 40 in the figure. It is formed with a gap. As a result, a receiving port 40H having a shape recessed inward in the radial direction is formed between the short jaw portion 44 and the long jaw portion 45. The receiving port 40H is formed in the first operation member 30 in a state in which the biasing rotation of the second operation member 40 in the above-described counterclockwise direction with respect to the first operation member 30 is restricted. It is arranged and formed so as to overlap with the long hole 30H.
An engagement pin P is inserted through the space where the receiving port 40H and the long hole 30H overlap with each other. The engagement pin P is configured to be able to slide in the in-plane direction within the long hole 30H, and is normally positioned at the lower end of the long hole 30H in the drawing so that the inside of the receiving port 40H. It is also in a state that has entered. As a result, the second operating member 40 is rotated in the counterclockwise direction in the figure integrally with the first operating member 30 by rotating the operating lever L.
The engagement pin P is normally urged in a direction to rotate the operation lever L in the clockwise direction in the figure by an urging force of a tension spring S3 hooked between the engagement pin P and an operation link 70 described later. The movement of the operation lever L that rotates clockwise in response to this bias is formed on the base plate 20 by the return operation portion 32 via the upper locking portion 52 formed on the third operation member 50. It is regulated by coming into contact with the right rotation stopper 22 that has been made.
Here, the short jaw portion 44 formed on the second operation member 40 described above is configured so that the release member 12 connected to the reclining device 10 can be rotated even if the second operation member 40 is rotated counterclockwise in the drawing. The length is such that it does not interfere with the protruding pin 12P. However, as shown in FIG. 3, the long jaw portion 45 formed in the same manner is brought into contact with the protruding pin 12P of the release member 12 by rotating the second operation member 40 counterclockwise in the drawing. It is formed in the length which can push. Therefore, the second operating member 40 regulates its own counterclockwise rotation by pushing the release member 12 and rotating it to the position where the locking projection 12S contacts the operation stopper 3T. It will be in the state.

Next, returning to FIG. 2, a flat plate-like third operating member 50 is pivotally supported on the connecting shaft A1 that pivotally supports the second operating member 40 and the first operating member 30. Has been.
The third operating member 50 is disposed with the plate surface thereof parallel to each other in a form sandwiched between the first operating member 30 and the second operating member 40. Accordingly, the third operation member 50 is in a state of being rotatable relative to the first operation member 30 and the second operation member 40 around the connection axis A1.
In the third operation member 50, an end portion of the inner member C1 of the operation cable CA is hooked to a cable hook portion 51 formed in a portion on the lower end side in the drawing. An upper locking portion 52 that receives a pushing operation in the clockwise direction shown in the figure by the return operation portion 32 formed on the first operation member 30 is formed at the upper end portion of the third operation member 50 in the drawing. Has been. Then, on the side of the third operation member 50 on the lower end side in the figure, a lower locking part that receives a pushing operation in the counterclockwise direction shown in the figure by a pulling operation part 33 formed on the first operation member 30. 53 is formed. The cable hook portion 51, the upper locking portion 52, and the lower locking portion 53 are formed by partially bending a part of the third operation member 50 in the plate thickness direction.
The third operating member 50 having the above-described configuration is normally pushed by the return operating portion 32 of the first operating member 30 urged clockwise in the figure by the urging force of the tension spring S3 described above. The upper locking part 52 is held in a posture state in contact with the right rotation stopper 22 formed on the base plate 20. Then, from this state, as shown in FIG. 6, the third operating member 50 is moved downward by rotating the first operating member 30 counterclockwise by rotating the operating lever L. When the side locking portion 53 is pushed by the pulling operation portion 33, the side locking portion 53 is integrally rotated with the side operation portion 53 and rotated in the same direction. As a result, the third operating member 50 pulls the end of the inner member C1 of the operating cable CA from the end of the outer member C2.

Next, an engagement / disengagement mechanism of the engagement pin P for integrally connecting or removing the first operation member 30 and the second operation member 40 in the rotation direction by the engagement pin P described above. Will be described.
That is, as shown in FIG. 2, a link arm-like swing link 60 is pivotally supported on the operation shaft 11 integrally connected to the release member 12 of the reclining device 10 described above. Yes. The swing link 60 can be freely rotated with respect to the operation shaft 11, but is always shown in the figure by an operation link 70 linked to the right end of the link. Held at the initial rotation position.
As shown in FIG. 4, the swing link 60 is pushed against the pushing member 2 </ b> B attached to the back frame 2 </ b> F in accordance with the movement in which the reclining device 10 is released from the locked state and the seat back 2 is moved forward. It is moved and pushed in the counterclockwise direction shown in the figure. As a result, the swing link 60 is operated by pulling up the operation link 70 linked to the right end thereof.
The movement of the seat back 2 being tilted forward is regulated by the pushing member 2B coming into contact with the forward tilt stopper 3S fixed to the cushion frame 3F.

Returning to FIG. 2, the operation link 70 linked to the swing link 60 is formed in a link arm shape extending in the vertical direction in the drawing, and the lower end portion of the drawing in the drawing is further described later. The upper link 80 is linked to the link. In the operation link 70, one end of a tension spring S3 is hooked on a spring hooking portion 71 formed on the side of the link on the lower end side in the figure. Note that the other end of the tension spring S3 is hooked on the engagement pin P as described above.
The pull-up link 80 linked to the operation link 70 is formed in a link arm shape extending in the left-right direction in the figure, and the left end in the figure can be rotated to the base plate 20 by the connection axis A2. Is pivotally supported. The pull-up link 80 is normally urged to rotate in the clockwise direction by the urging force of the torsion spring S2 hooked between the pull-up link 80 and the base plate 20, but as shown in FIG. The rotation by the biasing is restricted by contact with the upper rotation stopper 21 formed on the base plate 20. The torsion spring S2 is provided so as to be wound around the connecting shaft A2. One end of the torsion spring S <b> 2 is hooked on a spring hook portion 21 </ b> A formed on the base plate 20, and the other end is hooked on a spring hook portion 81 formed on the pull-up link 80.
The pull-up link 80 is formed with a long hole 80H extending along the link length direction. The long hole 80H is formed so as to penetrate the pull-up link 80 in the thickness direction, and is formed in a curved shape so as to draw an arc around the connection axis A1. Then, the engagement pin P inserted through the long hole 30H formed in the first operation member 30 described above is inserted through the long hole 80H.

As shown in FIG. 2, the pull-up link 80 pushes the engagement pin P downward below the long hole 30H in a state where the clockwise rotation by the bias is restricted. Is held in a state where it is also inserted into the interior of the receiving port 40H. As shown in FIG. 4, the pull-up link 80 is rotated counterclockwise in the illustrated manner around the connection axis A <b> 2 when the seat back 2 is moved forward by the operation of the operation lever L and the operation link 70 is pulled up. Turned in the direction. As a result, the pull-up link 80 pulls the engaging pin P inserted into the long hole 80H upward and removes it from the receiving port 40H.
As a result, the integrally connected state of the first operating member 30 and the second operating member 40 in the rotational direction by the engagement pin P is removed, and therefore only the first operating member 30 is further singly provided. It can be turned counterclockwise. That is, as described above with reference to FIG. 5, the operation lever L is normally operated by the second operation member 40 and the locking projection 12S of the release member 12 in a state where the engagement pin P enters the receiving port 40H. When the rotation is restricted by contact with the stopper 3T, the rotation operation is restricted. However, as described above, the engagement pin P is removed from the receiving port 40H by moving the seat back 2 forward, so that the rotation of the second operation member 40 is restricted by the first operation member 30 alone. It is possible to further rotate counterclockwise from the position.
Therefore, as shown in FIG. 6, the first operation member 30 is further rotated counterclockwise by the rotation operation of the operation lever L, whereby the lower locking portion 53 of the third operation member 50 is rotated. Can be pushed by the pulling operation portion 33 and the third operation member 50 can be pushed in the counterclockwise direction. As a result, the third operating member 50 pulls the end portion of the inner member C1 of the operation cable CA from the end portion of the outer member C2. As a result, the lock states of the lock devices 5 and 5 that lock the vehicle seat 1 and the floor F are released.

At this time, as can be seen with reference to FIG. 4, the second operation member 40 released from the connected state by the engagement pin P is moved to the initial rotation operation position (before being operated) by the release member 12 being biased. When the force is returned to the position (2), it is pushed back in the clockwise direction in the figure.
However, the movement in which the second operating member 40 is pushed back is elastically received by the urging force of the torsion spring S1 hooked between the first operating member 30 and the upper surface locking portion. 43 and the double-sided rotation stopper 31 of the first operating member 30 are also received by contact. As a result, the release member 12 can stop the movement of the release member 12 and return to the initial rotation operation position, so that the metal generated when the release member 12 is returned to the initial rotation operation position with momentum. The occurrence of an impact sound (abnormal noise) can be suppressed.

Therefore, the movement of the operation structure of the operation lever L described above is summarized as follows.
That is, the operation lever L is held at the rotation position shown in FIG. 2 in the initial state before the rotation operation. In this state, the reclining device 10 is held in a locked state.
Therefore, first, the operation lever L is turned counterclockwise in the drawing. As a result, the first operating member 30 and the second operating member 40 are integrally rotated in the same direction. Then, by rotating the operation lever L to the first rotation position shown in FIG. 3, the long jaw portion 45 formed on the second operation member 40 becomes the protruding pin of the release member 12. 12P is pushed and the locked state of the reclining apparatus 10 is cancelled | released.
As a result, as shown in FIG. 4, the fixed state of the backrest angle of the seat back 2 is released, and the seat back 2 is tilted forward to a position where it is folded over the seat cushion 3. At this time, as the seat back 2 is moved forward, the swing link 60 is pushed by the pushing member 2B and turns counterclockwise in the drawing. As a result, the pull-up link 80 is pulled upward via the operation link 70 connected to the swing link 60, and the engagement pin P is removed from the receiving port 40 </ b> H formed in the second operation member 40. .

Here, returning to FIG. 3, the operation lever L is connected to the second operation member 40 in a state where the engagement pin P is still in the interior of the receiving port 40 </ b> H in the middle of the forward movement of the seatback 2. It is in an integrated state in the direction of rotation. Accordingly, at this stage, the operation lever L is further advanced so that the operation lever L is rotated to the second rotation position shown in FIG. When the rotation of 40 is restricted, the turning operation is restricted. As a result, the operation lever L cannot be operated to further rotate the operation lever L from the second rotation position unless the seat back 2 is tilted forward. That is, unless the seat back 2 is moved forward, the operation lever L cannot pull the operation cable CA to release the engagement lock state between the vehicle seat 1 and the floor F.
Accordingly, returning to FIG. 4, the seat back 2 is moved forward and the engaging pin P is removed from the receiving port 40H, so that the operation lever L can be further rotated. Rotate in the turning direction. As a result, as shown in FIG. 6, the third operating member 50 is pushed by the first operating member 30 and rotated in the same direction, so that the operation cable CA is pulled. As a result, the engagement lock state of each of the locking devices 5 and 5 is released, and the vehicle seat 1 is raised from the installation position on the floor F to the retracted position in a folded posture in which the seat back 2 is collapsed. Stored.
In addition, since the usage method of a present Example is demonstrated by the content which put together the motion of the operation structure of the said operation lever L, it abbreviate | omits.

Thus, according to the vehicle seat unlocking operation mechanism of the present embodiment, the restriction state of the rotation operation of the first operating member 30 can be changed by the forward movement of the seat back 2. The engagement lock state between the vehicle seat 1 and the floor F can be prevented from being released unless the seat back 2 is brought forward. Accordingly, since the above-described movement can be performed without malfunction only by the stepwise rotation operation of the first operating member 30 as described above, the engagement lock state between the vehicle seat 1 and the floor F is released. A series of operations can be easily performed.
Further, since the movement of the release member 12 returned to the initial rotational operation position by the biasing is elastically received by the biasing force of the torsion spring S1, the movement of the release member 12 with a bounce is made. It can be attenuated, and the occurrence of interference sound (abnormal sound) can be suppressed.
Further, the movement of the release member 12 returned to the initial rotation operation position by the biasing can be stopped at a position in the middle thereof by pressing the upper surface locking portion 43 against the double-sided rotation stopper 31 and locking it. By doing so, it is possible to quickly stop the movement of the release member 12 from moving, and it is possible to enhance the effect of suppressing the generation of interference noise (abnormal noise).
Furthermore, by applying this unlocking operation mechanism to the retracting operation structure of the retractable vehicle seat 1, the operation of storing the vehicle seat 1 in the retracted position as a compact posture in which the vehicle seat 1 is folded can be easily performed without malfunction. Can do.

Although the embodiment of the present invention has been described with respect to one example, the present invention can be implemented in various forms in addition to the above-described example.
For example, an example in which the unlocking operation mechanism is applied to a side-up type storage structure in which a vehicle seat is folded and flipped up to the side of the vehicle has been shown. The present invention can also be applied to other storage structures that are stored by being dropped into a recess formed on the floor. That is, the lock release operation mechanism of the present invention can be applied to various configurations used for the purpose of releasing the engagement lock state between the vehicle seat and the floor after the seat back is moved forward by operating the operation lever. .
Further, as a means for elastically receiving the movement of the release member returned toward the initial rotational operation position by the biasing force, a twist applied between the second operation member and the first operation member. Although a spring is shown, other elastic members such as a rubber member may be used. Note that the elastic member may not be provided, but in this case, since the elastic movement of the release member is not buffered, an interference sound is generated when the release member is returned to the initial rotation position. Care must be taken because it may occur.
Further, as a means for catching the movement of the release member returned to the initial rotational operation position by the bias at the midway position, the upper surface locking portion for receiving the movement of the second operation member and the double-side rotation Although the contact structure with the moving stopper is shown, this receiving means may not be provided. However, in this case, as in the case described above, an interference sound may be generated when the release member is returned to the initial rotation position.
In addition, as a configuration for restricting the rotation of the second operation member, a configuration in which the release member pushed by the second operation member abuts on an operation stopper formed on the cushion frame is shown. However, for example, the second operation member may be directly restricted by a stopper member provided on the cushion frame.

1 is a perspective view schematically illustrating a storage structure for a vehicle seat according to Embodiment 1. FIG. It is a block diagram showing the initial state of the lock release operation mechanism of the vehicle seat. It is a block diagram showing the state by which the operation lever was rotated to the 1st rotation position. It is a block diagram showing the state by which the seat back was brought forward. It is a block diagram showing the state by which the operation lever was rotated to the 2nd rotation position. It is a block diagram showing the state by which the operation lever was further rotated from the 2nd rotation position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle seat 2 Seat back 2F Back frame 2B Pushing member 3 Seat cushion 3F Cushion frame 3S Forward tilt stopper 3T Operation stopper 4 Support plate 5 Locking device 5F Hook 6 Hinge device 10 Reclining device 11 Operation shaft 12 Release member 12P Projection pin 12S Locking projection 20 Base plate 21 Upper rotation stopper 21A Spring hook portion 22 Right rotation stopper 23 Cable hook portion 30 First operation member 30H Long hole 31 Double-side rotation stopper 31A Spring hook portion 32 Return operation portion 33 Tension Operation part 40 Second operation member 40H Receiving port 41 Spring hook part 42 Lower surface locking part 43 Upper surface locking part 44 Short jaw part 45 Long jaw part 50 Third operation member 51 Cable hook part 52 Upper locking part 53 Below Side lock 60 Swing link 70 Operation link 71 Spring hook 80 pulling links 80H elongated hole 81 spring hook L control lever S1 torsion spring (elastic member)
S2 torsion spring S3 tension spring P engagement pin CA operation cable C1 inner member C2 outer member A1, A2 connecting shaft F floor S striker

Claims (4)

A vehicle seat unlocking operation mechanism that operates so that the seat back of the vehicle seat is moved forward and the vehicle seat is released from the engagement lock state with the floor in a state where the seat back is moved forward.
A first operation member provided on the vehicle seat so as to be rotatable;
A second operating member that is rotated integrally with the first operating member by engagement with the first operating member;
An engagement / disengagement mechanism capable of integrally engaging or disengaging the first and second operation members in the rotation direction.
The engaging / disengaging mechanism is in a state where the first and second operating members are integrally engaged with each other in the rotational direction at a normal time before the seat back is moved forward, and the first operation is performed. By rotating the member integrally with the second operation member to the first rotation position, the fixed state of the backrest angle of the seat back is released, and the first operation member Is moved to a second rotation position that is further rotated than the first rotation position, so that the movement of the second operation member in the same rotation direction is restricted, and the first operation member is also The movement of the pivoting operation is restricted, and the first and the first and second mechanisms are operated by the operation of the engagement / disengagement mechanism interlocked with the movement of the seat back after the fixed state of the backrest angle is released. The second operating members are disengaged from each other. Thus, the engagement lock state between the vehicle seat and the floor is released by rotating the first operation member released from the engagement with the second operation member further than the second rotation position. The vehicle seat unlocking mechanism is characterized in that it is operated as described above. The vehicle seat unlocking operation mechanism according to claim 1,
The operation of releasing the fixed state of the backrest angle of the seat back is performed by the second operating member that is rotated integrally with the first operating member in the fixed state of the backrest angle of the seat back. It is done by the movement of pushing the release member for operation to release,
The release member is held at an initial rotational operation position in which the seatback backrest angle is always fixed by an urging force, and is pushed by the second operation member against the urging force. To release the fixed state of the backrest angle,
In a state where the seat back is moved forward by the release operation of the release member and the first and second operation members are disengaged from each other, the release member pushes the second operation member back by urging and is initially The movement returning toward the rotational operation position is elastically received by an urging force of an elastic member such as a spring member provided between the second operation member and the first operation member. An unlocking mechanism for a vehicle seat, wherein The vehicle seat unlocking operation mechanism according to claim 2,
The movement of the release member returned from the release operation position to the initial rotation operation position by urging is the movement of the second operation member that is rotated back by the release member. A vehicle seat unlocking operation mechanism characterized in that it is stopped at a position in the middle of being returned to the initial rotational operation position by being abutted against and regulated by a member. The vehicle seat unlocking operation mechanism according to any one of claims 1 to 3,
When the seat back is tilted forward and the engagement lock state with the floor is released, the vehicle seat is moved from the installation position on the floor in the folded position where the seat back is collapsed. A vehicle seat unlocking operation mechanism characterized by being configured to be stored and moved to a storage position.

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