JP2006123578A - Holding device for vehicle seat - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a constitution that the living space or the housing space in a limited cabin space can be more widely ensured without giving restrictions in functions owned by items around a seat by the holding of the seat in a holding device for the vehicle seat which can keep the seat retained at a position for which the seat has been turned from a sitting position to a specified position by a one-touch simple operation. <P>SOLUTION: A turning in an opposite direction from the turning direction of a turning link mechanism 20 is regulated under the state that the seat 40 supported by the turning link mechanism 20 under a relatively turnable state to a car body 60 has been turned from the sitting position to the specified position. Thus, this holding device 10 for the vehicle seat keeps the seat 40 retained at the specified position. The holding device 10 is equipped with a locking mechanism 30 which is arranged in a manner to be linkable with the turning link mechanism 20, and regulates the turning in the opposite direction from the turning direction by engage-locking with the turning link mechanism 20 at least at two positions in a turning path by which the vehicle seat 40 is turned. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a vehicle seat holding device. More specifically, the present invention relates to a vehicle seat holding device that holds a vehicle seat in a state in which the vehicle seat is flipped up from a seating position to a predetermined storage position.

Conventionally, when designing the structure of each part of a vehicle such as an automobile, the living space and the accommodation space are ensured as wide as possible in the limited interior space. Specifically, for example, the seat portion is configured such that the seat can be flipped up in the front and rear, left and right directions of the vehicle, and can be held at a predetermined storage position. Accordingly, the seat cushion and the seat back of the seat are folded up and flipped up in the predetermined direction and held at the storage position, thereby securing an empty space as a living space or an accommodation space from which the seat is removed. Can do.
Further, Patent Document 1 described below discloses a technique that can easily perform a series of operations of flipping up a sheet and holding it in a stored state with one touch. In this disclosure, a hinge mechanism having a hinge pin that rotatably supports the seat with respect to the vehicle body is provided at the lower portion of the seat cushion. Thereby, the seat can be flipped up with the hinge as a rotation center. In addition, a torsion coil spring that urges the seat in the flip-up direction is provided inside the hinge mechanism. Further, a lock mechanism (reverse rotation prevention mechanism) that restricts the seat from rotating in a tilting direction (a direction opposite to the flip-up direction) is provided inside the hinge mechanism. The lock mechanism engages and locks with the hinge mechanism portion to restrict the rotation of the sheet in the tilting direction when the sheet is flipped up and reaches a predetermined rotation angle at which it is stored. Therefore, when the seat is stored, the seat is automatically flipped up to a predetermined storage position only by releasing the lock mechanism (striker) that holds the seat in the seating position. Locked. That is, it is possible to easily hold the sheet in the state where the sheet is flipped up to the storage position with one touch.

Japanese Utility Model Publication No. 6-67162

In the above-described conventional technology, that is, the conventional technology that can hold the sheet in the flipped-up position by a simple operation with one touch, the sheet is flipped up to reach the planned storage position, thereby moving the sheet in the tilting direction. The rotation was restricted.
Therefore, for example, when the rear seat is flipped up in the direction of the front seat to be in the retracted state, if the front seat is slid forward from the storage position of the rear seat, a wasteful empty space is created between them. End up. Further, in order to cope with the above problem, it is not preferable to set the rear seat retracted position as a position corresponding to the front slide position of the front seat because the slide of the front seat is restricted.
That is, since the storage position of the sheet is restricted by the surrounding area, the sheet cannot be stored in a position state that is always suitable for various uses.

  The present invention was created to solve the above-described problems, and the problem to be solved by the present invention is a state position in which the seat is rotated from the seating position to the predetermined position by a simple operation with one touch. In the vehicle seat holding device that can be held in the vehicle, it is possible to secure a wider living space and accommodation space in a limited vehicle interior space without restricting the functions of the surroundings by holding the seat. It is in the structure which can be performed.

In order to solve the above problems, the vehicle seat holding device of the present invention takes the following means.
First, the first aspect of the present invention is a vehicle seat supported as being rotatable relative to the vehicle body by a rotation link mechanism and rotated from a seating position in use to a predetermined position. A vehicle seat holding device that holds a vehicle seat in a predetermined position by restricting rotation in a direction opposite to the rotation direction of the dynamic link mechanism, and is arranged to be interlocked with the rotary link mechanism. Provided with a lock mechanism that engages and locks the rotation link mechanism at at least two positions among the rotation paths for rotating the vehicle seat and restricts rotation in the direction opposite to the rotation direction. It is.
Here, as the locking mechanism that is a mechanism for preventing the reverse rotation of the seat, various types can be mentioned depending on the engagement mode with the rotation link mechanism. As an example, a wedge type, a protrusion / claw type, or a brake type can be given. It is done. That is, in the wedge type, the portion that performs relative rotation in conjunction with the rotation link mechanism is formed as an eccentric shape or the like and cannot be reversed, and this wedge action restricts reverse rotation. It is. The protrusion / claw type is a type in which a swinging claw such as a so-called ratchet mechanism is fitted to restrict rotation in the reverse direction.
According to the first aspect of the present invention, when the vehicle seat is rotated relative to the vehicle body by the rotation link mechanism, the lock mechanism is engaged and locked to the rotation link mechanism in conjunction with this. Specifically, the lock mechanism engages and locks with the rotation link mechanism at at least two or more positions in the rotation path of the vehicle seat. As a result, the rotation link mechanism is restricted from rotating in the direction opposite to the rotation direction, and the vehicle seat is in a reverse rotation prevention state. That is, the vehicle seat is held in a rotated position.

Next, according to a second aspect of the present invention, in the first aspect described above, the lock mechanism is engaged and locked with the rotation link mechanism only when rotating the vehicle seat in the rotation direction. It is a one-way structure that restricts rotation in the direction opposite to the direction.
According to the second aspect of the invention, the lock mechanism engages and locks with the rotation link mechanism only when the vehicle seat is rotated from the seating position toward the predetermined position. Therefore, only by rotating the vehicle seat in the rotation direction, the lock mechanism automatically operates in conjunction with the rotation, so that the rotation link mechanism is in the engagement locked state. Further, when the engagement lock state is released and the vehicle seat is rotated in the direction opposite to the rotation direction, the lock mechanism does not operate.

Next, according to a third aspect of the present invention, in the second aspect described above, the rotation link mechanism includes a first base member fixed to the vehicle body side on the lower side of the vehicle seat, and a vehicle seat side. A seating position having a second base member that is fixed and a hinge pin that pivotally supports the first base member and the second base member so that the first base member and the second base member can rotate relative to each other; The lock mechanism is configured as a tumble mechanism that can be flipped up from the other end side portion, and is supported at a position where one end side portion is relatively rotatable at a predetermined position separated from the pivot support position of the hinge pin by the second base member. Is arranged on the contact surface formed on the first base member and is urged to rotate by a rotation urging means for urging the vehicle seat of the rotation link mechanism in a direction opposite to the direction in which the vehicle seat is flipped up. Pressed state that bites into the contact surface When the rotation link mechanism is rotated in the direction of flipping up the vehicle seat, the one end side portion of the additional plate is rotated in accordance with the rotation of the second base member. And the other end portion is urged in the direction opposite to the rotation direction to rotate and bite into the contact surface of the first base member, so that the follow-up plate is moved between the first base member and the second base member. The engagement lock state is maintained in a predetermined standing posture state in which the rotation in the direction opposite to the rotation direction of the second base member can be restricted.
According to the third aspect of the invention, when the second base member is rotated relative to the first base member by rotating the vehicle seat in the direction of flipping up, the one end side portion of the additional plate is displaced in the same direction. To do. In accordance with this displacement, the other end side portion of the follow-up plate is rotated and biased by the rotation biasing means, and acts to bite into the contact surface of the first base member. Thereby, the follow-up plate is held in a predetermined standing posture state between the first base member and the second base member. Then, the rotation of the second base member in the direction opposite to the rotation direction is restricted by the additional plate in the standing posture state. That is, the rotation link mechanism is in the engagement lock state in which the rotation in the reverse direction is restricted. The follow-up plate is displaced as the vehicle seat rotates in the flip-up direction, but is always held in a predetermined standing posture state. That is, as the vehicle seat rotates, the rotation link mechanism is continuously engaged and locked.

Next, according to a fourth aspect of the present invention, in the third aspect described above, the abutment surface formed on the first base member is formed on the driving plate by the vehicle seat being flipped up by a predetermined angle or more. It is set as a shape in which the other end side portion bites into an engagement locked state.
According to the fourth aspect of the present invention, the push-in plate holds the vehicle seat in a predetermined standing posture state by causing the vehicle seat to jump above a predetermined angle so that the other end side portion bites into the contact surface of the first base member. Is done.

The present invention can obtain the following effects by taking the above-described means.
First, according to the first aspect of the present invention, for example, when the rear seat is flipped up (rotated) in the direction of the front seat and held in the retracted state, the rear seat is moved to the sliding position in the front-rear direction of the front seat. It can hold | maintain as the combined appropriate flip-up state position. That is, the vehicle seat can be held at two or more target rotational positions in accordance with various usage purposes. Therefore, the living space and the accommodation space in the limited vehicle interior space can be secured more widely.
Furthermore, according to the second aspect of the present invention, the vehicle seat can be held more easily at two or more target rotation positions by simply rotating the vehicle seat from the seating position. Further, when the vehicle seat held in the rotating position is released from the reverse rotation prevention state (the engaging link state of the rotating link mechanism) and returned to the original seating position, the above engagement locking function is activated. Therefore, the operation of returning to the original position can be performed more easily.
Furthermore, according to the third aspect of the present invention, the rotation link mechanism can be continuously engaged and locked as the vehicle seat is rotated in the direction of flipping up. Therefore, it is possible to hold the vehicle seat as a flip-up state position aimed at with higher accuracy. Thereby, the living space and accommodation space of a vehicle interior space can be ensured still more widely.
Furthermore, according to the fourth aspect of the present invention, since the vehicle seat is in a reverse rotation-preventing state only within the target rotation range, the operability of the vehicle seat can be improved and the usability can be improved. .

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 holding device 10 according to the present embodiment will be described with reference to FIGS. FIG. 1 is a perspective view showing an appearance of a vehicle seat holding device 10, FIG. 2 is an enlarged view of a main part of FIG. 1, and FIG. 3 shows an arrangement state of the vehicle seat holding device 10 in a state where the seat 40 is in a seating position. FIG. 4 is a view showing a state in which the seat 40 is turned up from the state shown in FIG. 3, and FIG. 5 is a view showing a state in which the seat 40 is further turned up from the state shown in FIG. 6 is a diagram showing a state in which the seat 40 is flipped up to the maximum flip-up position, FIG. 7 is a diagram showing a state in which the seat 40 is flipped up and held at a position corresponding to the slide position of the front seat 50, FIG. FIG. 8 is a view showing a state in which the seat 40 is flipped up and held at a position corresponding to a position where the front seat 50 is slid rearward from the state of FIG. 7.

  First, as shown in FIGS. 7 and 8, the vehicle seat holding device 10 of this embodiment is provided on a rear seat (hereinafter, seat 40) configured to be able to be flipped up in the direction of the front seat 50. ing. Specifically, the seat 40 is provided with the rotation link mechanism 20 on the front leg 42a of the seat cushion 42, and is supported relative to the vehicle body 60 in a state in which the seat 40 can be relatively rotated in the direction of the arrow in the figure. In addition, a spiral spring (not shown) that is urged to rotate in the direction in which the seat 40 is flipped up is connected to the rotation link mechanism 20. Thereby, the operation when the sheet 40 is flipped up is assisted. In other words, the spring characteristics of the spiral spring are set so that a rotational biasing force is acted on supplementarily for the purpose of reducing the load applied when the seat 40 is flipped up. Therefore, even if the locking mechanism 43 provided on the rear leg 42b of the seat cushion 42 is released, the seat 40 is not immediately raised to the maximum jumping position, but is flipped up to an appropriate position that is flipped up manually. It is done. In this way, the rotation link mechanism 20 is configured as a tumble mechanism that can flip up the seat 40 from the seating position in the used state to the target flip-up state position.

  Further, as shown in FIG. 1, the vehicle seat holding device 10 of the present embodiment is configured to hold the seat 40 that has been flipped up as described above at the target flipped-up position. It is equipped as. In other words, the sheet 40 that has been spun up to the target flip-up position is placed in a reverse rotation prevention state in which the sheet 40 is prevented from rotating in the reverse direction from the flip-up position. Specifically, the rotation restriction of the seat 40 in the reverse direction is performed when the lock mechanism 30 disposed so as to be interlocked with the rotation link mechanism 20 is engaged and locked with the rotation link mechanism 20.

Hereinafter, the configuration of each unit will be described in detail.
First, as shown in FIG. 1, the rotation link mechanism 20 includes a first base member 21 fixed to the vehicle body 60 side on the lower side of the seat cushion 42, and a second base fixed to the seat cushion 42 side. A member 22 and a hinge pin 23 that pivotally supports the first base member 21 and the second base member 22 so as to be relatively rotatable are configured. Therefore, the seat 40 configured integrally with the second base member 22 can be rotated relative to the vehicle body 60 configured integrally with the first base member 21 in the flip-up direction with the hinge pin 23 as the rotation center. It is supposed to be in a state.
Specifically, as shown in FIGS. 2 and 3, the first base member 21 has a U-shaped cross section in which the inner plate surfaces of the two trapezoidal plate members 21 a are arranged to face each other and the bottom side is connected. Is formed. The bottom side is fixed to the vehicle body 60. In addition, at the upper position of the first base member 21, a hinge pin 23 is installed and fixed between the opposing plate members 21a. Further, as well shown in FIG. 2, a contact surface 21c for contacting a push-in plate 31 of a lock mechanism 30 described later is provided on the inner surface side of the plate member 21a disposed on the front side in the drawing. The guide member 21b is disposed. As shown in FIG. 2, the guide member 21b is formed in a shape in which two plate members are arranged to face each other and the follow-up plate 31 is slidably guided between these plate members. The abutting surfaces 21c formed between the plate members 21a will be described later together with the description of the locking mechanism 30, but as a whole, as shown in FIG. It is made into a shape. Further, the rear end portion of the abutting surface 21c (the right end portion in the drawing shown in FIGS. 2 and 3) is a play portion having a locally gentle curvature (not shown in the drawings). 21d is formed. Further, as well shown in FIGS. 2 and 3, one end of the spring member 32 of the lock mechanism 30 is provided at the front side portion (the left side portion in the drawing shown in the drawing) of each plate member 21 a of the first base member 21. A hook portion 21e for multiplying the two is formed. Here, the spring member 32 corresponds to the rotation urging means of the present invention. Further, a stopper member 21f for restricting the maximum rotation position of the second base member 22 is located near the position where the hinge pin 23 is installed in the first base member 21 (the position on the lower left side in the drawing of the hinge pin 23 shown in FIG. 3). Is installed and fixed. As shown in FIG. 6, the stopper member 21f is provided at a position set in advance as the maximum rotation position of the second base member 22, and when the second base member 22 is rotated to this position. Rotation is restricted by engaging with an engaging portion 22c described later.
Next, as shown in FIGS. 2 and 3, the second base member 22 has a substantially U-shaped cross section similar to that of the first base member 21 (the bottoms of the two plate members 22a facing each other are supporting members). 22b). The plate members 22a are pivotally supported on the hinge pins 23 in a state of being sandwiched between the plate members 21a of the first base member 21. Further, the support member 22b has a shape projecting rearward, and is fixed to the lower portion of the front side portion of the seat cushion 42 in a manner of receiving the seat cushion 42 from below as well shown in FIG. Yes. Further, a locking portion 22c that protrudes in a claw-like shape is formed at a position in front of the upper portion of each plate member 22a (position on the upper left side in the drawing shown in FIG. 3). As shown in FIG. 6, the locking portion 22c is formed as a portion that is locked to the stopper member 21f when the second base member 22 is rotated to a preset maximum rotation position. Yes.

  Next, the lock mechanism 30 is configured to include a follow-up plate 31 and a spring member 32, as well shown in FIGS. The former follow-up plate 31 is pivoted by a pin 31e so that one end side portion 31a can rotate relative to the plate member 22a of the second base member 22 (the plate member 22a disposed on the front side in the drawing surface shown in FIG. 2). The other end portion 31 b is supported on the contact surface 21 c of the first base member 21. The latter spring member 32 is stretched so that both ends thereof are overlapped with the follow-up plate 31 and the first base member 21. Specifically, as shown well in FIG. 3, the push-in plate 31 has a first end portion 31 a in the vicinity of the installation position of the hinge pin 23 in the second base member 22 (a position on the lower side in the drawing of the hinge pin 23 shown in FIG. 3). ). Further, a hook portion 31 c for hooking the other end of the spring member 32 is formed at a position near the center of the push-in plate 31, and the spring member 32 is formed between the hook portion 21 e of the first base member 21 and the push-in plate 31. It is stretched by being hooked to the hook portion 31c. Therefore, the push-in plate 31 is rotated in the direction opposite to the flip-up direction of the seat 40 around the pin 31e of the one end side portion 31a by the spring force of the tension spring member 32. It receives the action of the rotating biasing force. Therefore, the follow-up plate 31 is in a state in which the other end portion 31b disposed on the contact surface 21c is pressed against the contact surface 21c by the action of the rotation biasing force.

Therefore, as well shown in FIGS. 3 to 6, when the seat 40 is rotated in the direction in which the seat 40 is flipped up from the seating position (the arrow direction shown in FIGS. 7 and 8), 2 The base member 22 rotates relative to the hinge pin 23 as a rotation center. As the second base member 22 rotates, the one end side portion 31a of the push-in plate 31 follows the second base member 22 and is displaced and lifted in this rotating direction (see FIGS. 4 to 6). ). Then, the other end portion 31b of the push-in plate 31 rotates in the direction opposite to the rotation direction under the action of the rotation biasing force by the spring member 32 as the one end portion 31a is lifted. Then, the contact state that bites into the contact surface 21c is obtained. That is, the follow-up plate 31 is displaced so that the other end portion 31b is always in contact with the contact surface 21c in conjunction with the rotation link mechanism 20, and the first base member 21 and the first base member 21 are moved. 2 is always held in an upright posture with the base member 22. Therefore, in this state, even if the second base member 22 is rotated in the direction opposite to the rotation direction (the direction in which the second base member 22 is tilted), the follow-up plate 31 in the standing posture state has the first base member 21 and the second base member Since the support member is interposed between the member 22 and the member 22, the reverse rotation is restricted. That is, by the operation of the lock mechanism 30, the rotation link mechanism 20 enters an engagement lock state in which the reverse rotation is restricted.
However, in the engagement lock state, the rotation link mechanism 20 is not restricted by the lock mechanism 30 even if the rotation link mechanism 20 is rotated in the direction in which the seat 40 is flipped up. This point is apparent when considering the direction of rotation of the second base member 22 shown in FIGS. 3 to 6, that is, the direction of the load acting on the follow-up plate 31 of the second base member 22. Therefore, the seat 40 in the flip-up state position is always in a state in which it can be flipped up even when the rotation link mechanism 20 is in the engagement locked state.
By the way, the shape of the contact surface 21c of the guide member 21b described above is set as a shape that can always hold the push-in plate 31 in a preferable standing posture state when the sheet 40 is flipped up and rotated. That is, when the sheet 40 is flipped up and the one end side portion 31a of the push-in plate 31 is lifted, the push-in plate 31 is always suitable so that the other end side portion 31b corresponds to the amount of displacement of the lifted portion. It has a shape that is appropriately displaced so as to be bitten at a position where it is in a standing posture state. Further, the play portion 21d formed on the contact surface 21c is arranged so that the other end portion 31b of the push-in plate 31 contacts (see FIG. 3) when the seat 40 is in the seating position in use. ing. The play portion 21d has a gentler curvature than the other contact surface 21c. Therefore, in the section in which the play portion 21d is formed, the other end portion 31b bites into the abutment surface 21c even if a rotational biasing force (pressing force) is applied to the push-in plate 31 by the spring member 32. It will never be. That is, in this section, the rotation link mechanism 20 is prevented from being engaged and locked, and the operability is improved by giving a certain amount of play to the operation of flipping up the seat 40.

Then, the usage method of the holding | maintenance apparatus 10 for the vehicle seat of a present Example is demonstrated using FIGS. In the present embodiment, a case where the seat 40 (rear seat) is held in the flipped-up position that is flipped up in the direction of the front seat 50 will be described as well shown in FIGS.
First, as shown well in FIG. 3, in the state where the seat 40 (hereinafter, refer to FIG. 7 for the seat 40) is in the used seating position, the push-in plate 31 of the lock mechanism 30 has the other end side portion 31 b. It is positioned on the play portion 21d of the contact surface 21c.
Next, as well shown in FIG. 7, the locking mechanism 43 in the rear leg 42 b of the seat 40 with the seat back 41 folded into the seat cushion 42 is released, and the seat 40 is turned up in the direction of jumping up. . Then, as well shown in FIG. 4, the follow-up plate 31 is in the standing posture state between the first base member 21 and the second base member 22 as the second base member 22 rotates. In this state, for example, when the operation of raising the seat 40 is stopped, the follow-up plate 31 functions as a support member and restricts the reverse rotation of the second base member 22. That is, the seat 40 is brought into the reverse rotation prevention state (the rotation link mechanism 20 is in the engagement lock state). However, the rotation link mechanism 20 in the engagement lock state is always in a rotatable state in the direction in which the seat 40 is further raised. Accordingly, when the sheet 40 is further rotated in the direction of further jumping, the follow-up plate 31 is displaced along with this operation. At this time, the follow-up plate 31 is always in a posture state in which the standing posture state is maintained (see FIG. 5). That is, the seat 40 is always in the reverse rotation prevention state in which the reverse rotation is restricted in the rotation path in the flip-up direction. As well shown in FIG. 6, when the seat 40 is flipped up to a preset maximum rotation position, the locking portion 22c of the second base member 22 is locked to the stopper member 21f, so that the spring 40 jumps. The turning in the raising direction is restricted to this position.

Therefore, for example, as well shown in FIG. 7, when the front seat 50 is slid forward (leftward in the figure), the seat 40 (rear seat) is flipped up to the maximum rotation position. Thus, it is possible to hold the position as the flip-up state position close to the front seat 50. That is, there is no useless empty space between the front seat 50 and the seat 40. Further, as well shown in FIG. 8, when the sheet 40 is flipped up in a position in which the front seat 50 is slid backward from the state shown in FIG. May be flipped up to a position corresponding to the position where the front seat 50 is slid. As a result, the seat 40 can be held in the flip-up state position without restricting the sliding function of the front seat 50.
After that, when returning the seat 40 in the raised state position to the seating position in the used state again, for example, referring to FIG. 6, the other end portion 31b of the push-in plate 31 is moved from the contact surface 21c. What is necessary is just to pull out to the deviated position (position deviated to the right side in the paper surface shown in the figure). Specifically, for example, a pulling means such as a wire having a pulling operation lever is preliminarily hung on a hook portion 31d formed near the other end portion 31b of the follow-up plate 31, and this is pulled. What is necessary is just to pull out the other end side part 31b of the follow-in plate 31 by operating. Thereby, the engagement lock state of the rotation link mechanism 20 is released. Therefore, if the seat 40 is rotated in the tilting direction (the direction opposite to the flip-up direction) in this state, the lock mechanism 30 does not operate and the seat 40 can be easily returned to the original seating position.

As described above, the vehicle seat holding device 10 according to this embodiment restricts the seat 40 as much as possible with respect to the functions of the seat 40 such as the front seat 50 (functions such as sliding in the front-rear direction and reclining). Can be held in a state where it is flipped up to a position where it is not given. Therefore, it is possible to secure a wide living space and accommodation space in a limited interior space without creating a useless empty space with the front seat 50.
Further, the lock mechanism 30 for holding the seat 40 in the flip-up state position as the reverse rotation preventing state is provided so as to be interlocked with the rotation link mechanism 20, and only lifts (rotates) the seat 40 from the seating position. With this simple operation, the engagement lock state can be achieved at a plurality of two or more rotation positions aimed at the rotation link mechanism 20. Further, the lock mechanism 30 has a one-way structure that operates only when the seat 40 is rotated in the direction of flipping up from the seating position. Therefore, when releasing the engagement lock state of the seat 40 in the flip-up state position and returning it to the original seating position again, it is possible to perform an operation of returning more easily. Furthermore, since the lock mechanism 30 continuously engages and locks with the rotation link mechanism 20 as the seat 40 is rotated in the direction of flipping up, the seat 40 is flipped up with higher accuracy. It can be held in the state position. Therefore, it is possible to secure a wider space for accommodation and accommodation in the interior space of the vehicle. Furthermore, since the play portion 21d is formed on the contact surface 21c, it is possible to prevent the sheet 40 from being in the reverse rotation preventing state at the initial stage where the sheet 40 is flipped up. Thereby, play (freedom) can be given to the raising operation of the seat 40, and the operability can be improved.
Further, the lock mechanism 30 is configured to restrict the rotation of the second base member 22 in the reverse direction by causing the additional plate 31 to function as a support member. Therefore, for example, compared to a structure that prevents the reverse rotation by engaging the projection claw such as a ratchet mechanism, it can be configured to have a large strength that can withstand even in the event of a vehicle collision.

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 example.
First, in the present embodiment, the case where the rear seat (seat 40) is flipped up and held in the direction of the front seat 50 (front direction) is shown, but the present invention may be applied to other forms. For example, the present invention may be applied to a rear seat that is configured to be able to be flipped up in the rearward direction or the left-right direction. Moreover, it is not limited to a rear seat, You may equip with other seats, such as a front seat.
In addition, as shown in FIGS. 3 to 6, regarding the configuration of the lock mechanism 30, the follow-up plate 31 rotates in a direction opposite to the rotation direction with the rotation of the sheet in the flip-up direction. In this embodiment, the standing posture state is shown. However, the standing posture state may be obtained by rotating in the same direction as the sheet flip-up direction. That is, referring to FIG. 3, in the state where the seat is in the seating position in use, the other end portion of the push-in plate is disposed at the front end portion of the contact surface (the left end portion in the drawing shown in the figure). In addition, the spring member is configured to be urged to rotate in the same direction as the sheet flip-up direction.
Instead of the configuration of the lock mechanism 30, a ratchet mechanism or a brake type mechanism may be applied. However, in this case, as described above, it is necessary to pay attention to the fact that the strength against the load received at the time of a vehicle collision is lower than that of the configuration shown in the present embodiment.

It is a perspective view which shows the external appearance of the holding | maintenance apparatus of the vehicle seat of a present Example. It is a principal part enlarged view of FIG. It is a figure which shows the arrangement | positioning state of the holding | maintenance apparatus of a vehicle seat in the state where a seat | sheet is in a seating position. FIG. 4 is a diagram illustrating a state where the sheet is rotated in a direction in which the sheet is flipped up from the state of FIG. 3. FIG. 5 is a diagram illustrating a state in which the sheet is further rotated in the direction of flipping up from the state of FIG. 4. It is a figure which shows the state which raised the sheet | seat to the maximum flip-up position. It is a figure which shows the state which raised and hold | maintained the sheet | seat to the position corresponding to the slide position of a front seat. It is a figure which shows the state which raised and hold | maintained the sheet | seat in the position corresponding to the position which slid the front sheet | seat back from the state of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Vehicle seat holding | maintenance apparatus 20 Rotating link mechanism 21 1st base member 21a Plate member 21b Guide member 21c Contact surface 21d Playing part 21e Hanging part 21f Stopper member 22 2nd base member 22a Plate member 22b Support member 22c Locking Part 23 Hinge pin 30 Lock mechanism 31 Push-in plate 31a One end part 31b Other end part 31c Hanging part 31d Hanging part 31e Pin 32 Spring member (rotating biasing means)
40 seat 41 seat back 42 seat cushion 42a front leg 42b rear leg 43 lock mechanism 50 front seat 60 vehicle body

Claims (4)

The rotation direction of the rotation link mechanism is a state in which the vehicle seat supported by the rotation link mechanism as being relatively rotatable with respect to the vehicle body is rotated from the seating position in the use state to a predetermined position. A vehicle seat holding device that places the vehicle seat in the predetermined position by restricting rotation in the reverse direction,
The rotation link mechanism is arranged to be interlocked with the rotation link mechanism, and is engaged and locked to the rotation link mechanism at at least two or more positions in the rotation path for rotating the vehicle seat, and is opposite to the rotation direction. A vehicle seat holding device comprising a lock mechanism for restricting rotation in a direction. The vehicle seat holding device according to claim 1,
The lock mechanism has a one-way structure that engages and locks with the rotation link mechanism and restricts rotation in the direction opposite to the rotation direction only when the vehicle seat is rotated in the rotation direction. A vehicular seat holding device. The vehicle seat holding device according to claim 2,
The rotation link mechanism includes: a first base member fixed to the vehicle body side on a lower side of the vehicle seat; a second base member fixed to the vehicle seat side; the first base member; A hinge pin that pivotally supports the second base member so as to be relatively rotatable, and is configured as a tumble mechanism that can flip up the vehicle seat from the seating position in the use state with the hinge pin as a rotation center. And
The lock mechanism is pivotally supported so that the one end side portion is relatively rotatable at a predetermined position separated from the pivot support position of the hinge pin by the second base member, and the other end side portion is formed on the first base member. A pressure that is arranged on the contact surface and is urged by rotation by a rotation urging means that urges the vehicle seat of the rotation link mechanism in a direction opposite to the direction in which the vehicle seat is flipped up. It is configured to have a follow-up plate in a state,
When the pivot link mechanism pivots in the direction in which the vehicle seat is flipped up, the one end side portion of the follow-up plate is displaced in the pivot direction along with the pivot of the second base member and the other end side portion. Is urged in a direction opposite to the rotation direction and rotates and bites into the contact surface of the first base member, so that the follow-up plate is moved between the first base member and the second base member. The vehicle seat holding device according to claim 1, wherein the vehicle seat holding device is in an engagement lock state in which the second base member is held in a predetermined standing posture state capable of restricting the rotation of the second base member in the direction opposite to the rotation direction. The vehicle seat holding device according to claim 3,
The contact surface formed on the first base member is set as a shape in which the other end side portion of the push-in plate bites into an engagement locked state when the vehicle seat is flipped up by a predetermined angle or more. A vehicular seat holding device.

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