JP3468345B2 - Seat device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foldable vehicle seat device, and more particularly to a device having a structure in which both a seat back and a seat cushion are rotated to be folded.

[0002]

2. Description of the Related Art Conventionally, as a seat device in which a seat cushion is rotated and folded in addition to a seat back, for example, a device disclosed in Japanese Utility Model Publication No. 58-49873 is known. . This conventional device
The seat cushion is attached to the vehicle body so as to be rotatable in the vehicle front-rear direction around its front portion, and the seat back is attached to the vehicle body so as to be rotatable in the vehicle front-rear direction around its lower end portion. A spring is provided in the front portion of the cushion to urge the seat cushion in the upright direction and maintain the seat surface in an upright state with the seat surface facing forward. It is configured to have a spring that urges the backrest surface and maintains the backrest surface in the forward tilted state.

Also, as a similar seat device, the one described in Japanese Patent Laid-Open No. 62-29441 is known, and in this conventional device, when the seat cushion is erected, a lock provided on the back surface of the seat cushion is used. The seat cushion is configured to be fixed by engaging a striker provided on the back surface of the seat back that is tilted forward.

[0004]

However, in the former conventional seat device, since the seat cushion is held in the upright state by the urging force of the spring, the seatback is placed on the back surface of the seat cushion together with the upright position of the seat cushion. There is a problem that the seat cushion is unstable when the seat cushion is in the upright position when the seat cushion is in the upright position, such as when the seat cushion is in the upright position without further tilting, or when the seat cushion is rotated further to the forward tilted position, and is easily shaken by vibration or external force. there were. In addition, since the seat cushion can be rotated only up to the upright state, it can be used as a cargo bed only up to a position behind the seat cushion, which is inconvenient.

Further, in the latter conventional seat device, although the seat cushion can be fixed by the lock in the upright state, this fixing can be performed only when the seat back is tilted forward, which is convenient. There was a problem of being bad. Further, since the seat cushion is fixed by locking the seat cushion and the striker on the seat back, if the relative positions of the seat cushion and the seat cushion are deviated from each other, the locking cannot be normally performed. There is a problem in that the position confirmation work during assembly of the seat back and the seat back requires accuracy, and the work is troublesome. Also, if the seat cushion and the seat back are provided with members, respectively There is a problem that the number of parts is increased due to the need for each member, and in addition, there is also a problem that if the back of the seat back is extended backward by the amount of the striker, it will be an obstacle to loading luggage. there were.

In view of the above-mentioned problems, the present invention can improve the convenience by widening the range in which the passenger compartment can be used as a luggage carrier. Moreover, the seat cushion is provided with a locking mechanism. This prevents the seat cushion from wobbling when the cushion is rotated from the seated position, and this locking mechanism is easy to use, reduces the number of parts, and increases the labor for assembly. It is an object of the present invention to provide a seat device that does not impose restrictions on the loading of luggage.

In order to achieve the above object, the invention of claim 1 is such that the seat cushion is attached to the vehicle body so as to be rotatable in the front-rear direction around the front portion thereof, and the seat back is rotated in the front-rear direction around the lower portion thereof. In the seat device movably attached to the vehicle body, the seat cushion is rotatably attached from a seated state in which the seat surface faces upward to a forward tilted state in which the seat surface faces downward. Is rotatably attached from a seated state in which its back surface faces rearward to a forward tilted state in which its back surface faces upward, and at least the seat cushion from the seated state to a standing state in which the seat surface faces forward. A biasing force applying means for applying a biasing force to rotate is provided, and the seat cushion can be fixed to each of the seated state, the upright state, and the forward tilted state. Yonrokku mechanism is provided, releasable cushion lock releasing mechanism is provided to fix the said seat cushion, said cushion lock mechanism, cars
Cushion base fixed to the body and seat cushion
The rotation axis that is fixed to the center of the seat cushion
Attached to the cushion base by
The cushion arm and the front edge of this cushion arm.
Seated locked tooth and standing locked tooth
And, the locked teeth for forward tilting can be engaged with each of these locked teeth.
Locking teeth are formed on each of the seat cushions.
When seated, standing and tilted forward
Seated locked teeth, upright locking teeth, and forward tilted locked teeth
It is arranged at a position where it can be engaged with and is locked with the locked state.
Mounted on the cushion base so that it can be displaced when released
It is configured to include a broken locking piece. In the invention according to claim 2, in the invention according to claim 1, when the seat back and the seat cushion are in a forward tilted state, the back surface of the seat back, the back surface of the seat cushion, and the floor of the luggage compartment. It is configured so that the surface and the surface are continuous at the same height. According to a third aspect of the invention, in the first or second aspect of the invention, the biasing force applying means applies a biasing force from the seated state to the forward tilted state. In the invention of claim 4, wherein, in the invention of any one of claims 1 to 3, wherein the cushion lock mechanism and the cushion lock releasing mechanism, the lockable state immediately after unlocking the cushion locking mechanism Configured to return. Claim
In the invention described in claim 5, the invention described in any one of claims 1 to 4
In the invention described above, the locking piece is a cushion arm.
Is urged by the urging means in the direction of engaging each locked tooth.
It has a structure .

[0008]

[0009]

According to the invention of claim 1, the seat back is rotatable from the seated state to the forward tilted state, and the seat cushion is rotatable from the seated state to the forward tilted state. The seat cushion can be fixed in each of the seated state, the upright state and the forward tilted state by the cushion lock mechanism. Therefore, when the user wants to use the seat device portion as a luggage compartment, the seat back is placed in the seated state and the seat cushion With the vehicle body floor between the seat back and the seat cushion being used as a loading platform, and with the seat back being seated and the seat cushion being tilted forward, the vehicle body between the seat back and the seat cushion. Use the floor and the back of the seat cushion as a cargo bed, and keep the seat back in the forward position. And a form in which the back of the seat back is used as a cargo bed with the seat cushion standing upright, and a form in which the back of the seat back and the back of the seat cushion are used as a cargo bed with both the seat back and the seat cushion tilted forward. It will be possible.
Then, when rotated in the seating state to cause standing state or forward tilting state of the sheet cushion to form a respective embodiments described above, the seat cushion can be fixed by the cushion lock mechanism and the seat cushion due to vibration or an external force There is no wobbling. That is, in this invention
Operate the locking piece to lock the locking tooth and the cushion.
When disengaged from each locked tooth on the arm, the seat cushion
The seat cushion can be rotated and the seat cushion
Each locked state as either standing state or forward state
When the teeth are engaged with the locking teeth of the locking piece, the seat cushion
Is seated, upright or tilted
Fixed. Therefore, the seated state, the standing state and the forward tilted state
In each state, the seat cushion is
There is no wobbling. When the seat cushion is in the seated state, the cushion lock release mechanism releases the fixation, that is, the locking teeth of the locking piece and the seated locked teeth are released .
When the seat cushion is disengaged and the fixation is released ,
It is automatically rotated by the urging force of the urging force applying means until it is in the standing state. Further, in the invention described in claim 1,
When assembling the foot cushion to the vehicle body,
Position on the slide base and the locking piece.
For example, at least regarding the operation of the cushion lock mechanism,
Positioning with the back-back side is not necessary. The seat
Positioning the cushion with respect to the vehicle body
It is a necessary work at the time of assembly regardless of the existence of
It

According to the second aspect of the present invention, the back of the seat back, the back of the seat cushion, and the floor of the luggage compartment are continuous at the same height by tilting both the seat back and the seat cushion forward. As a result, it is possible to secure a flat and wide cargo bed.

According to the third aspect of the invention, the urging force applying means is applied not only when the seat cushion is changed from the sitting state to the standing state but also when the seat state is changed from the sitting state to the forward tilting state or from the standing state to the forward tilting state. The seat cushion can be automatically rotated by the urging force of.

According to the fourth aspect of the invention, when the cushion lock release mechanism unlocks the cushion lock mechanism when the seat cushion is in the seated state or the upright state, immediately after that, the cushion lock release mechanism releases the lock. The operation is released and the cushion lock mechanism is returned to the lockable state, and is immediately locked when the seat cushion is rotated to the upright state or the forward tilted state. Therefore, in the device according to the first or third aspect, when the seat cushion is rotated by the urging force of the urging force applying means, the seat cushion is automatically locked when it is in the upright state or the forward tilted state.

[0013]

[0014]

According to the invention of claim 5, the inventions of claims 1 to 4
In the invention of any one, after releasing the engagement between each of the engagement Tomeha of locking teeth and the cushion arm of the locking piece, the biasing force of the removing operation force, the locking teeth are biasing means Is displaced in the engaging direction. Therefore, when the above-mentioned engagement is released and the seat cushion is rotated, the engagement piece of the locking piece is engaged at the time when the seat cushion is first brought into the seated state, the standing state or the forward tilted state. and either each of the <br/> locking teeth of Tomeha and cushion arm is engaged, is automatically locked in that state. In this case, when the disengagement is performed in the seated state, in the invention according to claims 1 to 3, the seat cushion is automatically rotated toward the standing position by the urging force of the urging force applying means. , Automatically fixed in the standing position. According to the third aspect of the invention, when the engagement is released in the seated state or the upright state, the seat cushion is rotated by the urging force of the urging force applying means, and the seat cushion is automatically moved in the upright state or the forward tilted state. Fixed to.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The seat device according to the first embodiment will be described in detail. FIG. 1 is a side view showing a seat device according to a first embodiment, in which 1 is a seat cushion and 2 is a seat back.

A cushion arm 3 is fixed to a front portion of a side surface of the seat cushion 1, and the seat cushion 1 is rotatable about a cushion rotating shaft S1 provided at a front end portion of the cushion arm 3 in the front-rear direction. It is attached to the cushion base 4 on the vehicle body side. Further, the seat cushion 1 is provided with a biasing force capable of being rotated by 180 degrees from the seated state in which the seat surface faces upward to the forward tilted state in which the seat surface faces downward by the return spring 5 (see FIG. 2). The cushion lock mechanism 6 can be fixed in the seated state, the forward tilted state, and the upright state in which the seat surface faces forward, and the cushion lock release mechanism 7 is provided.
You can release the lock by.

A back arm 8 is fixed to the lower portion of the side surface of the seat back 2, and the seat back 2 can be rotated in the front-rear direction about a back rotation shaft S2 provided at the lower end of the back arm 8. Is attached to the back base 9 on the vehicle body side. The seat back 2 is rotatable from a seated state in which its rear surface faces rearward to a forward tilted state in which its rear surface faces upward, and is fixed in the seated state by a back lock mechanism (not shown). At the same time, the seat lock state can be released by a back lock release lever 10 attached to the back arm 8.

In the figure, F1 is the floor of the luggage compartment, and when the seat cushion 1 and the seat back 2 are tilted forward, the back surface of the seat cushion 1, the back surface of the seat back 2 and the luggage compartment. The floor surface F1 is continuous at the same height.

FIG. 2 is a cushion lock mechanism 6 and a cushion lock release mechanism 7 of the seat device according to the first embodiment.
FIG. 3 is a side view showing the cushion lock mechanism 6 and the cushion lock release mechanism 7 of the seat device according to the first embodiment.

As shown in these figures, the cushion lock mechanism 6 includes a locking piece 61 having locking teeth 61a,
A seated locked tooth 62, a standing locked tooth 63, and a forward tilted locked tooth 64 formed on the front end edge of the cushion arm 3.
It consists of and.

The locking piece 61 is formed in a horizontally long shape,
It is arranged below the front end of the cushion arm 3 and has one end rotatably attached to the cushion base 4. Further, three locking teeth 61a are formed on a side edge portion facing the cushion arm 3, and the locked tooth 6 is provided adjacent to the locking piece 61 tip end side of the locking tooth 61a.
An arcuate convex portion 65 larger than 2, 63, 64 is provided. Further, the locking piece 61 is biased toward the cushion arm 3 side (direction of arrow D) by a return spring (not shown), and rotation (arrow E) on the side opposite to the biasing direction is It is restricted to a position where it comes into contact with the embossed portion 41 provided on the cushion base 4.

The seated locked tooth 62, the standing locked tooth 63, and the forward tilted locked tooth 64 are respectively formed in three shapes each corresponding to the locking tooth 61a. The seated locked tooth 62 is formed at a position that engages with the locking tooth 61a when the seat cushion 1 is seated, and the upright locked tooth 63 sets the seat cushion 1 in the upright state. Occasionally, it is formed at a position that engages with the locking tooth 61a, and the forward-moving locked tooth 64 is formed at a position that engages with the locking tooth 61a when the seat cushion 1 is in the forward-tilting state. There is. That is, the seated locked tooth 62, the standing locked tooth 63, and the forward tilted locked tooth 64 are arranged at different positions by 90 degrees in the circumferential direction of the front end edge of the cushion arm 3. In addition, the locked teeth 62, 63, 6
4, a recess 66 is formed next to the recess 4.
When the three locking teeth 61a of the locking piece 61 are all engaged with the locked teeth 62, 63, 64, the convex part 65 of the locking piece 61 is engaged.

The cushion lock release mechanism 7 is composed of the seat side lock release lever 71, the luggage compartment side lock release lever 72, and a lock release arm 73.

The seat-side lock release lever 71 is formed in an L shape so that one piece faces downward and the other piece faces front of the seat, and the downward piece is positioned so as to overlap the tip end portion of the locking piece 61. The cushion base 4 is arranged at the center.
Is rotatably attached to.

Further, the seat side lock release lever 71
The downward piece is provided with a locking piece push-down pin 71a and a roller-like locking piece push-up convex portion 71b rotatably attached to the downward piece by a shaft, as shown by the solid line in FIG. When the downward facing piece faces downward, the locking piece pushing-up convex portion 71b engages with the lower edge of the tip end portion of the locking piece 61, and the locking teeth 61a of the locking piece 61 and the cushion arm 3 are seated. Locked tooth 62, standing locked tooth 63,
The locking piece 61 is held at a position where it can be engaged with the front falling locked tooth 64. Further, as shown by the alternate long and short dash line in FIG. 3, when the seat side unlocking lever 71 is rotated in the direction of arrow a, the downward piece faces diagonally forward and the engaging piece pushing-up convex portion 71b causes the engaging piece 61 to move. When the locking piece push-down pin 71a pushes the upper edge of the tip of the locking piece 61 to rotate the locking piece 61 downward, the locking tooth 6 of the locking piece 61 is released.
1a is separated from the cushion arm 3, and the seat cushion 1 is unfixed. Further, when the seat side unlocking lever 71 is released, the locking piece 61 has the locking tooth 61a which is urged by the return spring.
The seated locked tooth 62, the standing locked tooth 63, and the forward tilted locked tooth 64 are returned to the positions where they can be engaged with each other.

That is, as shown in FIG. 3, when the seat cushion 1 is fixed in the seated state, if the seat side lock release lever 71 is rotated in the direction of arrow a, the seat cushion 1 is unfixed. Therefore, the return spring 5 is rotated to the upright side by the urging force of the return spring 5. And
When the seat side unlocking lever 71 is released, the locking tooth 61a of the locking piece 61 catches the standing locked tooth 63 that has moved in the direction of arrow B and engages with this. The seat cushion 1 is fixed in an upright state. After that, when the seat side lock release lever 71 is rotated again in the direction of the arrow A in the same manner, the seat cushion 1 is released from the fixed state, so that the seat cushion 1 is rotated forward by the biasing force of the return spring 5. . Then, when the seat release lever 71 is released during that time, the locking tooth 61a of the locking piece 61 catches the forward-moving locked tooth 64 that has moved in the direction of arrow B and engages with this. Therefore, the seat cushion 1 is fixed in the forward tilted state.

At this time, next to the locking tooth 61a of the locking piece 61, there is a convex portion 65 larger than the seated locked tooth 62, the standing locked tooth 63, and the forward tilted locked tooth 64. Since it is provided, the convex portion 65 has the locked teeth 62, 6 of the cushion arm 3.
The rotation of the cushion arm 3 does not stop until the three locking teeth 61a and the three locked teeth 62, 63, 64 are all engaged with each other after overcoming 3,64. That is, the locking teeth 6
The seat cushion 1 does not stop in an unstable state due to the 1a and the locked teeth 62, 63, 64 being caught halfway.

The unlocking arm 73 includes an arm body 731 formed in a dogleg shape and the arm body 7 thereof.
An arm head 732 rotatably attached to an upper end portion of the seat 31 and disposed below a downward piece of the seat-side lock release lever 71, and a central portion of the arm body 731 is the cushion. The arm head 7 is rotatably attached to the base 4, and when the downward piece of the seat side lock release lever 71 faces downward,
32 can contact the locking piece pushing-up convex portion 71b.

The arm body 731 is urged toward the side to be rotated rearward by a body return spring (not shown), and this rearward rotation is caused by the embossed portion 41 provided on the cushion base 4. It is regulated up to the contact position.

Further, the arm head 732 is integrally formed with a stopper 732a that abuts on the arm body 731 and allows the arm head 732 to rotate forward and regulate rearward. Body 731
A head return spring (not shown) having an urging force that urges the arm head 732 rearward to a position where the arm head 732 comes into contact with is provided. The luggage compartment side lock release lever 72 is installed in the luggage compartment at the rear of the seat device and is connected to the lower end portion of the arm body 731 via the wire 11.

FIG. 4 is a diagram showing the operation of the lock release arm 73. (i) is a state where the luggage compartment side lock release lever 72 is pulled backward, and (ii) is a hand from the luggage compartment side release lever 72. It shows the state when released. That is, when the luggage compartment side lock release lever 72 is pulled rearward, as shown in (i), the lock release arm 73 rotates because the lower end portion of the arm body 731 is pulled rearward by the wire. 732 moves forward. That is, first, as shown by the solid line, the arm head 732 causes the seat side lock release lever 7 to move.
It hits the locking piece pushing-up convex portion 71b of No. 1. Next, since the stopper 732a is in contact with the arm main body 731 and the rearward rotation is restricted, the arm head 732 moves forward while pushing up the locking piece pushing-up convex portion 71b as shown by the chain double-dashed line. To do. When the locking piece pushing-up convex portion 71b is pushed up by the arm head 732 in this way, the seat side unlocking lever 71 rotates in the direction of arrow a as shown in FIG. 3, so that the seat cushion 1 is not fixed. It will be canceled. Further pulling the luggage compartment side lock release lever 72 rearward,
As indicated by the dotted line, the arm head 732 does not reach the locking piece pushing-up convex portion 71b, and the unlocking arm 73 idles. Then, the seat side lock release lever 71
Returns to the original position shown by the solid line in FIG. 3 together with the locking piece 61.

Next, when the hand is released from the luggage compartment side lock release lever 72, the arm body 731 is rotated rearward as shown in (ii) by the urging force of the body return spring. At this time, the arm head 732 hits the engaging piece pushing-up convex portion 71b as shown by the solid line, and thereafter, the engaging piece pushing-up convex portion 71b is tilted forward by its reaction force as shown by the chain double-dashed line while keeping the engaging piece pushing-up convex portion 71b. pass. And arm head 7
When 32 is separated from the locking piece pushing-up convex portion 71b, the arm head 732 returns to the original straight state by the biasing force of the head return spring as shown by the dotted line. The body return spring force is stronger than the head return spring force.

That is, when releasing the fixation of the seat cushion 1, the seat side lock release lever 71
The release operation can be performed from the side or the front of the seat device, and the release operation can be performed from the luggage compartment by the luggage compartment side lock release lever 72.

FIG. 5 is a diagram showing a usage pattern of the seat device.
(I) shows the seat cushion 1 and the seat back 2 both in the seated state, (ii) shows the seat cushion 1 in the upright state while the seat back 2 remains in the seated state, and (iii) shows the seat back 2 in the seated state. The cushion 1 is in the forward tilted state, (iv) is the seat cushion 1 in the upright state and the seat back 2 is in the forward tilted state, and (v) is both the seat cushion 1 and the seat back 2 in the forward tilted state.

That is, in the state of (ii), the vehicle body floor surface F2 between the seat back 2 and the seat cushion 1 can be used as a cargo bed, and in the state of (iii), the seat back 2 and the seat cushion 1 are separated from each other. The vehicle body floor surface F2 between them and the back surface of the seat cushion 1 can be used as a luggage carrier, the back surface of the seat back 2 can be used as a luggage carrier in the state (iv), and the seat back 2 can be used in the state (v). The back surface of the seat cushion 1 and the back surface of the seat cushion 1 can be used as a luggage carrier.

That is, it is convenient because it can be appropriately selected from a plurality of usage forms according to the intended use. In particular, in the state of (v), the back surface of the seat back 2, the back surface of the seat cushion 1 and the cargo room floor surface F1 can be made continuous at the same height, and a flat and wide cargo bed can be secured. Thus, it becomes possible to load long items or wide items that could not be loaded conventionally.

Moreover, since the seat cushion 1 can be fixed in each state, the seat cushion 1 does not wobble due to vibration or external force, and a stable stacking state is possible. Further, when the seat cushion 1 is changed from the seated state to the standing state, the seat cushion 1 can be automatically rotated by the urging force of the return spring 5 until the seat cushion 1 is set to the standing state. Even when the seat cushion 1 is moved from the upright state to the forward tilted state, the seat cushion 1 is automatically rotated by the biasing force of the return spring 5 until the seat cushion 1 is brought to the forward tilted state simply by releasing the fixing of the seat cushion 1. Since it can be moved, even a weak woman or an elderly person can easily move the seat cushion 1.

[0039]

[0040]

[0041]

[0042]

[0043]

[0044]

[0045]

[0046]

[0047]

[0048]

[0049]

[0050]

[0051]

[0052]

[0053]

[0054]

[0055]

The embodiment of the present invention has been described in detail above with reference to the drawings. However, the specific structure is not limited to this embodiment, and changes in design and the like within the scope not departing from the gist of the present invention. Even if it exists, it is included in the present invention.

[0057]

As described above, according to the first aspect of the invention, the seat back is rotatable from the seated state to the forward tilted state, and the seat cushion is moved from the seated state to the forward tilted state. Since the seat cushion can be fixed to the seated state, the upright state and the forward tilted state by the cushion lock mechanism, it is possible to use the seat device part as a luggage compartment. A mode in which the seat back is kept in a seated state and the seat cushion is in an upright state and the vehicle body floor surface between the seat back and the seat cushion is used as a cargo bed, and the seat back is kept in a seated state and the seat cushion is used The front of the vehicle and the floor of the vehicle between the seat back and seat cushion and the back of the seat cushion as the loading platform. And a state in which the seat back is tilted forward and the seat cushion 1 is erected and the back surface of the seat back is used as a cargo bed, and both the seat back and the seat cushion are tilted forward and the back surface of the seat back and The back surface of the seat cushion can be appropriately selected according to the application from the form of using the back surface of the seat cushion as a platform, and the convenience is improved. In addition, in each of the above-described modes, the seat cushion is fixed by the cushion lock mechanism, so that there is an effect that the seat cushion does not wobble due to vibration or external force. Also, when changing the seat cushion from the sitting state to the standing state,
Since the seat cushion can be automatically rotated by the urging force of the urging force applying means until the seat cushion is in the upright state,
Even a weak woman or an elderly person can easily move the seat cushion, and it is also advantageous in achieving remote control. In addition, in the invention of claim 1,
Install the seat cushion in the seated, upright, and tilted positions.
Cushion lock mechanism to fix each to the car body
The fixed cushion base and seat cushion
Fixed and rotatably attached to the cushion base
The cushion arm and the front edge of this cushion arm
Seated locked teeth and standing locked teeth formed on the
Tooth and locked teeth for forward tilting, and each of these locked teeth can be engaged
Since it is composed of a locking piece with effective locking teeth,
Can be fixed regardless of the position of the seat back
Together with 3 states of sitting, standing and tilted
It can be fixed with, which can improve convenience.
It has the effect of not providing a member on the seat back side
Has the effect of reducing the number of parts
And the bulge on the back of the seat back.
And it will be advantageous in terms of loading luggage
The seat cushion is attached to the vehicle body.
If you check only the position of the
The locking mechanism works normally and the cushion lock
Seat back for the purpose of normal operation
It is not necessary to check the relative position with
This has an effect that simplification can be achieved.

According to the second aspect of the present invention, the seat back and the seat cushion are both brought forward so that the back surface of the seat back, the back surface of the seat cushion and the floor surface of the luggage compartment are at the same height. Since it can be continuously connected, a flat and wide cargo bed can be secured, and the effect of widening the range of applications can be obtained. According to the third aspect of the invention, the biasing force applying means is applied not only when the seat cushion is changed from the seated state to the upright state but also when the seat cushion is changed from the seated state to the forward tilted state or from the upright state to the forward tilted state. Since it is possible to utilize the urging force of, the seat cushion can be easily moved even by a weak woman or an elderly person, and there is an effect that it is even more advantageous for remote control. In the invention according to claim 4, when the seat cushion is unlocked, the cushion lock mechanism immediately returns to the lockable state. Therefore, for example, when the seat cushion is rotated from the seated state to the upright state, the seat is erroneously erected. A problem such as passing through the state does not occur, and especially when the seat cushion is rotated by the urging force of the urging force applying means as in the device according to claim 1 or 3, It is possible to obtain an effect that high convenience is obtained without any occurrence.

[0059]

[0060] In the fifth aspect of the present invention, the engaging piece, due to a structure in which urged by urging means in a direction to be engaged with each of the locking teeth of the cushion arm, displaces the locking piece with each to release the engagement between the locking teeth and the locking teeth when rotated the seat cushion in the desired position and removes the operating force against the locking piece, the locking piece is urging means Te returns to a position of each of the locking teeth and the locking by the force, automatically are those engagement of the locking teeth each other is performed in any state of the forward tilting state the seating state and the standing state, operability Excellent in.

[Brief description of drawings]

FIG. 1 is a side view showing a seat device according to a first embodiment.

FIG. 2 is a perspective view showing a cushion lock mechanism and a cushion lock release mechanism of the seat device according to the first embodiment.

FIG. 3 is a side view showing a cushion lock mechanism and a cushion lock release mechanism of the seat device according to the first embodiment.

FIG. 4 is a diagram showing the operation of the lock release arm, in which (i) shows the state when the luggage compartment side lock release lever is pulled rearward, and (ii) shows the state when the hands are released from the luggage compartment side release lever. Shows.

FIG. 5 is a diagram showing a usage pattern of the seat device according to the first embodiment.

[Explanation of symbols]

1 seat cushion 2 seat back 3 cushion arm 4 cushion base 5 Return spring 6 Cushion lock mechanism 7 Cushion lock release mechanism 8 back arms 9 back base 10 Back lock release lever 11 wires 41 Embossing section 61 Locking piece 61a locking tooth 62 Seated locked teeth 63 Locking teeth for standing 64 Locked teeth for forward tilting 65 convex 66 recess 71 Seat side lock release lever 71a Locking piece push-down pin 71b Locking piece pushing up convex part 72 Luggage compartment side lock release lever 73 unlocking arm 731 Arm body 732 arm head 732a stopper F1 luggage compartment floor F2 body floor 12 Front cushion lock mechanism 121 Locking piece 121a locking tooth 122 holding piece 122a Holding piece push down pin 122b Holding piece pushing up convex portion 123 Locking teeth for standing 124 Front locking teeth 13 Rear cushion lock mechanism 131 striker 132 bracket 132a holding groove 133 latch 133a engagement recess 133b engagement step 134 Latch lock 14 Cushion lock release mechanism 141 lock release arm 141a arm body 141b arm head 142 First interlocking lever 142a pressing part 143 Second interlocking lever 143a pressing part 144 Front lock release lever 145 Third interlocking lever 145a pressing part 146 4th interlocking lever 146a pressing part 147 Rear lock release lever 148,149,150,151 wire

─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-64-67434 (JP, A) JP-A-9-30303 (JP, A) JP-A-62-29441 (JP, A) Actual development Sho-62- 167737 (JP, U) Actual Open Sho 62-76038 (JP, U) Special Public Sho 63-45329 (JP, B1) Special Official Hei 2-15409 (JP, B2) Actual Official Hei 6-6995 (JP, Y2) Actual Public Sho 51-21464 (JP, Y1) Actual Public Sho 58-49873 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) B60N 2/00 -2/72

Claims (5)

(57) [Claims] 1. A seat device in which a seat cushion is attached to a vehicle body so as to be rotatable in the front-rear direction around a front portion thereof, and a seat back is attached to a vehicle body so as to be rotatable in the front-rear direction around a lower portion thereof. In the above, the seat cushion is rotatably attached from a seated state in which the seat surface faces upward to a forward tilted state in which the seat surface faces downward, and the seat back changes from a seated state in which the back surface faces rearward. The rear surface of the seat cushion is rotatably attached until it is in a forward tilted state, and the seat cushion has a biasing force that rotates the seat cushion from the seated state to a standing state in which the seat surface faces forward. A force applying means is provided, a cushion lock mechanism is provided that can fix the seat cushion in each of the seated state, the upright state, and the forward tilted state. Releasable cushion lock releasing mechanism is provided to fix the cushion, the cushion locking mechanism, which is fixed to the vehicle body succumbed
Seat base and seat cushion
Cushion base
Cushion arm rotatably attached to the
Formed on the front edge of the cushion arm of
Seated locked teeth, standing locked teeth and forward tilted locked teeth
And a locking tooth capable of engaging with each of the locked teeth is formed,
Set the seat cushions to the seated and standing states, respectively.
And the locked teeth for sitting and the
Is placed at a position where it can be engaged with the locked tooth for locking and the locked tooth for tilting forward.
Placed and can be displaced between the locked state and the unlocked state
The locking piece attached to the cushion base
The seat device is characterized by 2. When the seat back and the seat cushion are tilted forward, the back surface of the seat back, the back surface of the seat cushion, and the floor surface of the luggage compartment are continuously arranged at the same height. The seat apparatus according to claim 1, wherein the seat apparatus is provided. 3. The seat apparatus according to claim 1, wherein the biasing force applying means is configured to apply the biasing force from the seated state to the forward tilted state of the seat cushion. Wherein said cushion lock mechanism and the cushion lock releasing mechanism is, claims 1, characterized in that immediately after unlocking the cushion lock mechanism is configured to return to the lockable state 3
The seat device according to any one of 1 . 5. The engagement piece is provided for each cover of the cushion arm.
It is urged by the urging means in the direction of engaging the locking teeth.
The seat apparatus according to any one of claims 1 to 4, characterized in that: