JPH0649473Y2 - Vehicle seat device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a vehicle seat device.

(Prior Art) In a vehicle seat device in which an end portion of a seat is rotatably supported in a vertical direction with respect to a vehicle body and the other end side can be flipped up as needed, A folding link is attached between the seat and the vehicle body, and when the seat is in the state of being lifted up, the folding link holds the seat in the state of being in the state of being lifted up (e.g.
-167737 publication).

Further, in such a bending link, when the sheet is extended and held in a state of being flipped up, if the sheet is bent due to vibration or the like, the sheet in the state of being flipped up will inadvertently fall down, and the sheet of the sheet will be flipped up. The stability in the state cannot be secured. For this reason, a seat side link 61 which is usually attached to the seat 59 side as shown in FIGS. 9 to 11 is provided in such a bent link.
And a seat side link at a position near the connecting pin 63 of the bending link 60 including the body side link 62 attached to the body 58 side.
A lock mechanism 70 including a lock pin 71 provided on the 61 side and a lock lever 71 provided on the vehicle body side link 62 side is provided.

The lock lever 72 is always engaged with the lock pin 71 by the return spring 73 (that is, the lock direction).
Is urged by. The lock lever 72 is directly rotated when unlocked (that is, the lock lever 72 also has a function as a lock release lever).

(Problems to be solved by the invention) By the way, when the seat 59 is repelled, the space formed after the seat 59 is repelled is used as a part of the luggage compartment. Therefore, sheet 59
When flipping up and loading a luggage in the empty space behind it, there is a risk that the luggage or the like touches the folding link 60 or the lock mechanism 70 that is exposed on the rear side of the flipped up seat.

However, in the conventional lock mechanism 70, the lock lever 72 functions as it is as the lock release lever as described above, and the rotation operation of the lock lever 72 immediately causes the engagement between the lock lever 72 and the lock pin 71. It is reflected as a change in the combined state (in other words, the turning operation of the lock lever 72 is immediately linked to the unlocking operation). Therefore, for example, as described above, when the seat 59 is flipped up and the luggage or the like is loaded into the space on the rear side thereof, the luggage or the like touches the lock lever 72 of the lock mechanism 70 and the lock lever 72 moves in the unlocking direction. When rotated, the locked state of the lock mechanism 70 is released and the bending link 60 is bent (9th
Diagram chain line shown. There is a concern that the seat 59 will inadvertently fall down from the flipped-up state and it will no longer be possible to load items such as luggage.

On the other hand, when performing the lock operation and the unlock operation, from the viewpoint that the operation can be performed lightly with the smallest possible operation force and that the operation is performed without interfering with surrounding articles, the operation occupation range (that is, the lock It is required that the occupancy range associated with the turning operation of the release lever etc.) is as small as possible. However, in the above-mentioned conventional example, since the single lock lever 72 is configured to function not only as the original lock mechanism but also as the lock release lever, both of the above two different requirements are satisfied. Therefore, in this conventional example, since the latter requirement is emphasized and the lock lever 72 is relatively small in size, the distance from the pivot point to the operating point is short and the operating force is relatively large. Has a required structure.

Therefore, in the present invention, in a vehicle seat device having a folding link between the seat and the vehicle body, in addition to improving the holding performance of the seat in the state of being lifted up, the operating force and the operating occupation range are both reduced. The purpose is to improve operability.

(Means for Solving the Problem) In the present invention, as a specific means for solving the problem, one end of the seat is pivotally supported in the up-down direction with respect to the vehicle body while the seat and the vehicle body are In between, the other end side of the first link whose one end side is pivotally attached to the seat side and the other end side of the second link whose one end side is pivotally attached to the vehicle body side are mutually bendable. A bent link that is connected, a lock mechanism that is provided in the vicinity of the connecting portion of the bent link and that holds the bent link in an extended state, and a lock mechanism that is provided in the vicinity of the lock mechanism. A seat supporting device having a lock release lever for releasing the locked state of the lock mechanism by a pivoting operation to enable the folding movement of the folding link is arranged. Supported by the seat support device In the vehicle seat device configured to be held, the lock mechanism includes a lock pin provided on one side of the first link and the second link and a lock pin provided on the other side of the first link and the second link. (1) A lock lever pivotally supported via a pivot pin, and the lock lever is provided with an engagement groove portion into which the lock pin can be engaged, and the lock pin is engaged in the engagement groove portion. At the lock position, the bending movement of the folding link is restricted and fixed and held in the extended state, and at the unlocking position where the lock pin is disengaged from the engaging groove portion, the folding movement of the folding link is performed. And the lock release lever is disposed via a second pivot pin arranged in parallel with the first pivot pin at a position separated from the first pivot pin with respect to the lock lever. Lock It is rotatably supported relative to the lever and is disengaged from the lock lever in the lock position within a predetermined rotation range from a specific initial setting position in the rotation direction to one side in the rotation direction. On the other hand, when the rotation operation is performed beyond the predetermined rotation range, the lock lever is engaged with the lock lever in the lock position to rotate the lock lever from the lock position to the lock release position. There is.

(Operation) In the present invention, the lock mechanism including the lock pin and the lock lever and the lock release lever engaging and disengaging the lock lever are separately configured, and when the lock lever is in the lock position, the lock release lever is in its initial position. Since the lock lever is disengaged within the predetermined rotation range from the set position, for example, when loading a luggage at the seat rear position with the seat being flipped up, the lock release lever may be incorrect. Even if the lock mechanism is rotated in the lock release direction, as long as the rotation range is within the predetermined range, the lock mechanism maintains the lock state regardless of the rotation operation of the lock release lever, and the bending link is in the extended state. It will be held fixed.

Further, since the lock release lever is pivotally supported by the second pivot pin spaced apart from the first pivot pin, the lock release lever is pivotally supported by the lock lever pivotally supported by the first pivot pin. During the unlocking operation of the lock lever by the operation of the lock lever, the lock release lever rotates within a predetermined rotation range from its initial setting position with a small rotation radius about the second pivot pin, and a predetermined rotation radius is reached. After reaching the rotation range, the lock lever is integrated with the lock lever for the first time and is rotated with a large rotation radius about the first pivot pin.
For example, as compared with a case where both the lock lever and the lock release lever are pivotally operated around the first pivot pin, the occupied range associated with the lock release operation becomes smaller,
Interference between the lock release lever and peripheral articles can be prevented as much as possible.

Further, when the lock release lever is operated beyond a predetermined rotation range, the lock release lever and the lock lever are integrated and the first pivot pin that is the pivot point of the lock lever is Since the pivot arm rotates about the center, the moment arm represented by the distance from the first pivot pin to the point of action of the lock release lever becomes longer, and the lock release operation of the lock lever can be performed lightly with a smaller operating force. Is something that can be done.

(Effect of the Invention) Therefore, according to the vehicle seat device of the present invention, even if the lock release lever is accidentally rotated in the lock release direction in the state where the lock lever is set to the lock position, the rotation range thereof is predetermined. As long as it stays within the range, the lock mechanism maintains the locked state regardless of the turning operation of the lock release lever, and the bending link is fixed and held in the extended state. Therefore, the effect that the reliability is improved can be obtained.

Further, the lock release lever is pivotally supported by the second pivot pin spaced apart from the first pivot pin with respect to the lock lever pivotally supported by the first pivot pin. Since the occupation range is reduced to prevent interference between the lock release lever and peripheral articles as much as possible, the lock release operation can be easily performed regardless of the presence of peripheral articles, The operability is improved.

Further, when the lock release lever is operated beyond a predetermined rotation range, the lock release lever and the lock lever are integrated to lengthen the moment arm around the first pivot pin. Therefore, the unlocking operation can be performed lightly with a smaller operating force, and the operability is further improved.

(Embodiment) A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 8.

FIG. 1 shows a vehicle seat device Z according to an embodiment of the present invention. In FIG. 1, reference numeral 1 is a seat including a seat cushion 2 and a seat back 3, and 4 is the seat 1.
Is the vehicle body floor to which is attached. The seat 1 is mounted in the front part of the seat so as to be vertically rotatable with respect to the vehicle body floor 4 by a pivotal support mechanism 5, and is provided on the vehicle body floor 4 side in the rear part of the seat via an engaging / disengaging mechanism 6. It is detachably connected to the fixing member 7. Further, the seat 1 is set to a normal seating position (not shown) by engaging the engagement / disengagement mechanism 6 with the fixing fitting 7, and the engagement / disengagement mechanism 6 is released so that the seat rear portion is splashed upward. When it is raised, it is set to the flip-up position as shown in FIG. The seat 1 is rotationally positioned and held in its posture by a seat supporting device 10 which will be described later when the seat 1 is flipped up. The specific structure and operation of the seat supporting apparatus 10 will be described below with reference to FIGS. 2 to 8 in addition to FIG.

First, the structure of the seat supporting apparatus 10 will be described with reference to FIGS. 1 and 5 to 8.
The other end of the first link 12 whose one end is pivotally attached to the seat cushion 2 side via the seat side bracket 15 and the other end of which is the second link whose one end is pivotally attached to the vehicle body floor 4 side via the vehicle body side bracket 16 A bending link (11) is formed by connecting the other end of the link (13) with a connecting pin (14) so as to be relatively rotatable. The folding link 11 holds the sheet 1 in a flipped-up state in the fully extended state. Therefore, the folding link 11 is selectively folded at a position near the connecting portion between the first link 12 and the second link 13. A lock mechanism 30 described later for fixing (that is, locking) the posture of the bending link 11 in a fully extended state and a lock release lever 33 described later for releasing the locked state of the lock mechanism 30 are provided.

The lock mechanism 30 is rotatably attached to the lock pin 32 attached to the first link 12 side and the second link 13 side via the first pivot pin 19, and is engaged with the lock pin 32 at one end thereof. And a lock lever 31 having a mating groove portion 34 formed therein. The lock lever 31 has an engaging groove portion 34 when the lock lever 31 rotates about the first pivot pin 19 in a direction from the second link 13 side to the first link 12 side.
The mounting direction is set so that the first link 12 and the second link 13 can be locked in the state of being fully extended while being engaged with the shaft 32. Further, the lock lever 31 is always locked by the return spring 22 in the locking direction (arrow R in FIGS. 1 and 2).
Direction). In the following, the position of the lock lever 31 when the lock pin 32 is engaged with the engaging groove portion 34 is referred to as a lock position, and the engaging groove portion 34
The position of the lock lever 31 when the lock pin 32 is disengaged from is referred to as an unlock position.

Further, in this lock lever 31, a lever mounting portion 37 is integrally formed at a lateral position of a portion where the engaging groove portion 34 is formed, and the engaging groove portion 34 of both end surfaces of the lever mounting portion 37 is formed.
Lock release lever whose end face located on the side opposite to the open side of
A first stopper surface 35 corresponding to the first engaging protrusion 36 of 33 and an end surface located on the opening side of the engaging groove 34 is a second stopper surface 35 corresponding to the second engaging protrusion 39 of the lock release lever 33. The stopper surface 38 is used. Further, a stopper 40 is provided on the lock lever 31, and the rotation of the lock lever 31 is restricted by the stopper 40.

The lock release lever 33 is integrally formed in a substantially rectangular shape and is rotatably attached to the lever attachment portion 37 of the lock release lever 33 by the screw 21 and the second pivot pin 20, and also the return spring. The lock lever 31 is always biased by 23 in the same direction as the biasing direction of the return spring 22. In the lock release lever 33, the first engaging projection 36 is selected as the first stopper surface 35 of the lock lever 31, and the second engaging projection 39 is selected as the second stopper surface 38 of the lock lever 31. The engagement is restricted in both directions by the positive engagement.

Next, the relative positional relationship between the lock lever 31, the lock pin 32, and the lock release lever 33 of the lock mechanism 30 and their operating states will be described more specifically with reference to FIGS. 1 and 2 to 4. To do.

First, a state in which the bending link 11 is extended and the operating force for the lock release lever 33 is released is shown in FIGS. 1 (solid line state) and FIG. In this state,
The lock lever 31 is locked by the spring force of the return spring 22 around the first pivot pin 19 (in the arrow R direction).
When the lock position is reached, the engagement groove portion 34 is fitted into the lock pin 32 to realize the locked state. Further, at this time, the lock release lever 33 is urged to rotate in the direction of arrow R by the spring force of the return spring 23, and its second
The engagement protrusion 39 engages with the second stopper surface 38 of the lock lever 31 to prevent further rotation. The rotational position of the lock release lever 33 at this time is the initial setting position, and the lock release lever 33 is entirely stored in the side of the bending link 11. At this time, the first engagement protrusion 36 of the lock release lever 33 is separated from the first stopper surface 35 of the lock lever 31. Therefore, in this state, the lock release lever 33 moves in the lock release direction (arrow L direction).
In, the lock lever 31 is disengaged.

When the lock release lever 33 is rotated about 90 ° in the lock release direction (direction of arrow L) from the initial setting position shown in FIG. 2, the first engaging projection 36 is moved to the lock position as shown in FIG. The lock release lever 33 is engaged with the first stopper surface 35 of a certain lock lever 31, and the lock release lever 33 and the lock lever 31 are integrated in the lock release direction (hereinafter, the position of the lock release lever 33 at this time is operated to release the lock release operation). Further, the turning range (about 90 °) from the initial setting position to the unlocking operation starting position is the "predetermined turning range" referred to in the utility model registration claim).

Therefore, when the lock release lever 33 is further rotated in the direction of the arrow L from the state shown in FIG. 3, the lock lever 31 receives the turning force of the lock release lever 33 and the lock lever 31 is rotated by the first pivot pin 19.
As shown in FIG. 4, the engagement between the engagement groove 34 and the lock pin 32 is released (that is, the lock mechanism 30 is unlocked), and the same is rotated about the arrow L in the direction of the arrow L in FIG. The first link 12 is the second link as shown by the chain line (reference numeral 12 ').
It is bent relative to 13 (see the chain line in FIG. 1, reference numeral 11 ').

As described above, the lock release lever 33 has no effect on the lock lever 31 between the initial setting position and the lock release operation start position, and the rotation operation thereof is invalid. Therefore, in the normal seat supporting state by the seat supporting device 10 in which the lock release lever 33 is positioned at the initial setting position as shown in FIG. 1, the lock release lever is erroneously erroneously loaded or unloaded at the rear of the seat. Even if a force to rotate 33 is applied to 33, if the load direction is the arrow R direction, it does not affect the support performance of lock mechanism 30 because it is the lock direction of lock mechanism 30. On the contrary, when the load direction is the arrow L direction (that is, the lock release direction), the lock mechanism is irrespective of the rotation of the lock release lever 33 as long as the rotation amount of the lock release lever 33 is within the rotation range. The lock state of 30 is maintained, and in any case, the seat support device 10 ensures the support of the seat 1 in the rebounded state, and the support performance thereof is at a high level. Are those lifting.

In addition, the lock lever 31 pivotally supported by the first pivot pin 19
On the other hand, since the lock release lever 33 is pivotally supported by the second pivot pin 20 that is arranged apart from the first pivot pin 19, the lock release lever 33 is used to unlock the lock lever 31. At the time of operation, the lock release lever 31 rotates with a small rotation radius about the second pivot pin 19 in the rotation range from the initial setting position to the lock release operation start position, and the lock release operation is performed. After reaching the start position, the first pivot pin 19 is integrated with the lock lever 31 for the first time.
It is operated to rotate with a large turning radius centering around. Therefore, for example, compared with the case where both the lock lever 31 and the lock release lever 33 are rotated around the first pivot pin 19, the occupied range associated with the lock release operation becomes smaller, and the lock release is accordingly performed. The chances of interference between the lever 33 and surrounding articles are reduced, and the operability is improved.

Further, when the lock release lever 33 is operated beyond the lock release start position, the lock release lever 33 is operated.
33 and the lock lever 31 are integrated, and the lock lever 31
Since it pivots about the first pivot pin 19 which is the pivot point, the moment arm represented by the distance between the first pivot pin 19 and the action point of the lock release lever 33 becomes longer, The unlocking operation of the lock lever 31 can be performed lightly with a smaller operating force.

[Brief description of drawings]

FIG. 1 is a side view of a main portion of a vehicle seat device according to an embodiment of the present invention, FIG. 2 is an enlarged view of the seat support device shown in FIG. 1, and FIGS. FIG. 5 is a state change diagram, FIG. 5 is a view of the VV main portion in FIG. 2, and FIG. 6 is a vertical sectional view taken along the line VI-VI of FIG. 5, and FIG. 7 is a view of the seat supporting device shown in FIG. FIG. 8 is an exploded perspective view of FIG. 8, FIG. 9 is an overall perspective view of a conventional vehicle seat device, FIG. 10 is a perspective view of the bending link portion shown in FIG. 9, and FIG. It is an exploded perspective view. 1 …… Seat 2 …… Seat cushion 3 …… Seat back 4 …… Vehicle floor 5 …… Pivot support mechanism 6 …… Disengagement mechanism 7 …… Fixing metal fittings 10 …… Seat support device 11 …… Bending link 12… … First link 13 …… Second link 14 …… Connecting pin 19 …… First pivot pin 20 …… Second pivot pin 22 …… Return spring 23 …… Return spring 30 …… Lock mechanism 31 …… Lock Lever 32 …… Lock pin 33 …… Lock release lever 34 …… Engagement groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Muramatsu 3-1 Shinchi, Fuchu-cho, Aki-gun, Hiroshima Prefecture Mazda Co., Ltd. (56) References: 62-189940 (JP, U) Actual: 49- 79599 (JP, U) Actual opening Sho 53-55396 (JP, U) Actual opening Sho 59-72133 (JP, U)

Claims (1)

[Scope of utility model registration request] Claim: What is claimed is: 1. One end of a seat is rotatably supported in a vertical direction with respect to a vehicle body, and between the seat and the vehicle body,
The other end side of a first link whose one end side is pivotally attached to the seat side and the other end side of a second link whose one end side is pivotally attached to the vehicle body side are mutually bendably connected. A bending link, and a lock mechanism provided near the connecting portion of the bending link to fix and hold the bending link in an extended state;
A seat support device provided with a lock release lever which is provided in the vicinity of the lock mechanism and releases the locked state of the lock mechanism by its rotation operation to enable the folding movement of the folding link is arranged. A seat device for a vehicle, wherein the seat is supported by the seat supporting device when the seat is in a flip-up state, and the lock mechanism is provided on one side of the first link and the second link. And a lock lever pivotally supported on the other side of either the first link or the second link via a first pivot pin, and the lock pin is engaged with the lock lever. A possible engaging groove portion is provided, and at the lock position where the lock pin is engaged in the engaging groove portion, the bending movement of the bending link is regulated to fix and hold the bending link in an extended state. In the unlocked position where the lock pin is disengaged from the engagement groove portion, it is configured to allow the bending movement of the bending link, and the lock release lever is provided with respect to the lock lever from the first pivot pin. The lock lever is pivotally supported relative to the lock lever via a second pivot pin arranged in parallel with the first pivot pin at a separated position, and a pivot direction from a specific initial setting position in the pivot direction. The lock lever is disengaged from the lock lever in the lock position in a predetermined rotation range to one side, and is in the lock position when the rotation operation is performed beyond the predetermined rotation range. A seat device for a vehicle, which is configured to engage and rotate the lock lever from a lock position to a lock release position.