JP3462105B2 - Variable position and attitude device for automotive seats - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention allows a seating position on a seat provided on a floor panel of a vehicle body to be changed forward and backward, and the seat can be rotated forward and upward from a seatable posture to achieve a compact size. The present invention relates to a vehicle seat position / posture changing device that can be changed into a storage posture.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. 8-
There is one disclosed in Japanese Patent No. 67186.

According to the above publication, the seat includes a seat body located above the floor panel of the vehicle body, and a support means for supporting the seat body on the floor panel, and the seat is in a seatable posture. It is said that.

In the above structure, recently, the supporting means extends frontward and rearward from the lower surface side of the seat body downward, and the front and rear legs thereof are arranged to be rotatable back and forth. Before and after the upper end is pivotally supported on the seat body, a rear upper pivot support, a front lower pivot support for pivotally supporting the lower end on the floor panel so as to rotate the front legs back and forth, and the rear A locking tool that locks the lower ends of the legs to the floor panel in a disengageable manner and pivotally supports the rear legs on the floor panel so that the rear legs can rotate back and forth in this locked state, and the lower ends of the front legs. It has been proposed that a part is provided with a connecting tool for connecting the lower end part of the rear leg.

According to the sheet having the above structure,
The rear leg is rotated in the front-rear direction about the front lower pivot support and the locking device, and the seat body and the front and rear legs are relatively rotated about the front and rear upper support. As a result, when the seat body is moved substantially horizontally in the front-rear direction, the seating position on the seat can be changed back and forth to suit the physique and preference of the seated person.

Further, the front leg is pivoted forward to a predetermined pivotal position about the front lower pivot support, and the seat body is centered on the front upper pivot support while the locking by the lock is released. When it is rotated forward and upward to a predetermined rotation position,
In a side view of the vehicle body, a line connecting the front upper pivot support, the rear upper pivot support, the front lower support, and the pivot support point between the rear leg and the connecting tool is vertically long and has a small width in the front-rear direction. Therefore, the seat is assumed to be in a compact, vertically long storage posture in the front-rear direction, and as a result, the riding space and working space of the vehicle compartment are expanded.

Further, if the seat, which is in the storage shape of the rhombus having the vertically long and small width dimension as described above, is rotated rearward and downward with the front lower pivot support as the center, the rhombus described above is rotated. The width dimension of gradually increases and approaches a rectangle,
The lower end portion of the rear leg is automatically locked to the floor panel by the locking tool, and the seat is returned to the original seatable posture.

In the above case, when the seat is rotated rearward and downward,
When the lower end of the rear leg that rotates with this is about to be locked to the floor panel by the locking tool, the lower end of the rear leg connects the lower end of the front leg to the lower end of the front leg. The connector is positioned at a predetermined position with respect to the locking tool, so that the locking by the locking tool is smoothly performed.

[0009]

By the way, the above-mentioned conventional techniques have the following problems.

That is, since there is a dimensional error in each component of the above-mentioned seat and an assembling error also occurs when these are assembled, the side view of the vehicle body when the seat is in the storage posture as described above. Therefore, the imaginary line connecting the rear upper pivot support and the front lower support may exceed the seat main body at the pivot point of the rear leg and the connecting tool. When trying to return to a seatable posture, the rear legs try to face the bottom side of the seat main body around the rear upper pivot device, so that the rear legs may be manually rotated to their original positions. Without such work, there is a risk that the seat cannot be changed from the stowed position to the seatable position.

Further, since the connecting member is formed by connecting the respective ends of the front leg and the rear leg to each other, the seat is brought into the storage posture by rotating the seat forward and upward with the front lower pivot support as the center. In this case, the connector is located at the rear of the seat in this storage posture, and the connector may unnecessarily narrow the space in the vehicle compartment behind the seat.

The present invention has been made by paying attention to the above circumstances, and when the posture is changed from the storage posture of the seat to the seatable posture, the change work can be surely performed smoothly. Another object of the present invention is to make the space in the vehicle compartment behind the seat in the stored posture wider.

[0013]

A vehicle seat position / posture varying device according to the present invention for solving the above problems is as follows.

According to the first aspect of the present invention, the seat 4 includes a seat body 6 located above the floor panel 2 of the vehicle body 1, and a support means 7 for supporting the seat body 6 on the floor panel 2. The means 7 extends from the lower surface side of the seat body 6 downward, the front legs 13 and 14, and
The front and rear upper pivot support members 15 and 16 and the front leg 13 are pivoted back and forth so that the upper ends of the front and rear legs 13 and 14 are pivotally supported by the seat body 6 so as to be pivotable back and forth. A front lower pivot support 17 for pivotally supporting the lower end portion of the floor panel 2 so as to be freely movable, and a lower end portion of the rear leg 14 releasably locked to the floor panel 2 in this locked state. A locking tool 18 for pivotally supporting the rear leg 14 on the floor panel 2 so as to be rotatable back and forth, and a connecting tool 53 for connecting the lower end portion of the front leg 13 to the lower end portion of the rear leg 14. In the position and posture changing device of the automobile seat,

The front leg 13 is pivoted forward to a predetermined pivot position about the front lower pivot support 17, and the locking by the locking tool 18 is released so that the seat main body 6 is supported by the front upper pivot support. When the seat 4 is put in the storage posture by rotating the tool 15 upward and forward to a predetermined rotating position,
A part 53a of the connecting tool 53 is pressed against a part of the seat body 6 to prevent further rotation of the rear leg 14 around the rear upper pivot support 16. is there.

According to the invention of claim 2, in addition to the invention of claim 1, one end of the connector 53 is pivotally supported at the lower end of the front leg 13 and the other end is at the lower end of the rear leg 14. A part 53a in the longitudinal direction of the connecting tool 53, which is composed of a rod that is pivotally supported.
Is formed to have a substantially V-shape protruding toward the bottom surface 6a of the seat body 6, and when the seat 4 is placed in the storage posture, a part 53a of the connector 53 is a bottom surface of the seat body 6. It is designed to be in pressure contact with 6a.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 in the drawings denotes a car body, and arrow Fr indicates the front of the car body 1.

The vehicle body 1 has a floor panel 2 made of sheet metal extending substantially horizontally, and the interior of the vehicle body 1 above the floor panel 2 is a vehicle compartment 3 for passengers such as occupants. A seat 4 is provided. This sheet 4
Is a seat body 6 located above the floor panel 2
And a supporting means 7 for supporting the seat body 6 on the floor panel 2.

The seat body 6 corresponds to the floor panel 2
A seat cushion 8 extending substantially horizontally above the seat cushion 8, a seat back 9 projecting upward from the rear end of the seat cushion 8, and a lower end of the seat back 9 at the rear end of the seat cushion 8. Pivoting means for pivoting 1
0, and the seat back 9 is reciprocally rotatable (A, B) toward the lower front with the pivotal means 10 as the center. Although not shown, the seat back 9
There is provided reclining means for blocking the rotation at an arbitrary rotation position.

The seat 4 is in a "seatable posture" for the seated person, that is, the seat cushion 8 of the seat body 6 is in a posture where the seated person can sit down.
The seat back 9 has a posture in which the backrest can be seated on the seat cushion 8 while sitting on the seat cushion 8.

The support means 7 is a pair of left and right sheet metal front legs 13 extending downward from the lower surface side of the front portion of the seat cushion 8 and downward from the lower surface side of the rear portion of the seat cushion 8. A pair of left and right sheet metal rear legs that extend
4 and the front and rear upper pivot support members 15 and 16 and the front leg 13 to the front and rear so that the upper ends of the front and rear legs 13 and 14 are pivotally supported by the seat cushion 8 so as to be rotatable front and rear. Front lower support 17 for pivotally supporting the lower end of the floor panel 2 so that the lower end of the rear leg 14 can be freely pivoted to the floor panel 2. 18 and 18.

The front and rear upper pivotal supports 15 and 16 are fixed to the seat cushion 8 so as to project from the lower surface of the seat cushion 8. The brackets 21 and 22 are fixed to the seat cushion 8.
And the front and rear legs 1 on the brackets 21 and 22.
3 and 14, pivot shafts 23 and 24 for pivotally supporting the upper end portions of the shafts 3 and 14, respectively. On the other hand, the front lower pivot support 17 includes a bracket 26 fixed to the floor panel 2 and a pivot shaft 27 for pivotally supporting the lower end portion of the front leg 13 on the bracket 26.
It has and.

The locking member 18 is fixed to the floor panel 2 and has a locking portion 29 which also functions as a locking shaft and a pivot shaft.
A notched locked portion 30 which is attached to the lower end of the rear leg 14 and which is locked downwardly by the vertical movement of the rear leg 14 so as to be disengageably engaged with the locking portion 29. ,
A holding means (not shown) is provided which can hold the locked portion 30 in the locked state with respect to the locking portion 29. Further, in the locked state of the locked portion 30 with respect to the locking portion 29, the rear leg 14 is rotatable back and forth around the locking portion 29, that is, the locking of the locking tool 18 is performed. The portion 29 pivotally supports the floor panel 2 so that the rear leg 14 can be rotated back and forth.

A first spring 32 is externally fitted to the pivot shaft 23 of the front upper pivot support 15, and the first spring 32 is centered on the pivot shaft 23 with respect to the front leg 13 and the seat body 6 is provided. Is urged to rotate forward. A second spring 33 is fitted onto the pivot shaft 27 of the front lower pivot support 17, and the second spring 33 moves the front leg 13 forward with respect to the floor panel 2 about the pivot shaft 24. It is biased to rotate.

The front lower pivot support member 17 is resisted against the second spring 33.
When the front leg 13 rotates to a predetermined rearward rotation position about the pivot shaft 27, the rear rotation stopper 34 that abuts a part of the front leg 13 to prevent further rearward rotation.
After that, the rotation stopper 34 is fixed to the floor panel 2. Further, when the front leg 13 is rotated about a pivot shaft 27 of the front lower pivot support 17 to a predetermined front rotation position, a part of the front leg 13 is brought into contact with the front leg 13 to rotate further forward. Is provided with a front rotation stopper 35, and the front rotation stopper 35 is used for the front lower pivot support 17
Is formed on the bracket 26.

Before the seat cushion 8 described above,
Rotation blocking means 38 for blocking the rotation of at least one of the rear legs 13 and 14 at an arbitrary rotation position is provided. Specifically, this rotation preventing means 38 is used for the front leg 1
3, a locked portion 39 that is a plurality of notches formed in the upper end portion of the front leg 13 and a bracket 21 of the front upper pivot support 15 pivots back and forth by a pivot shaft 40. (C, D) An arm-shaped locking portion 41 which is freely pivotally supported and selectively engages and disengages with any one of the cutouts of the locked portion 39 by the forward rotation (C), The locking portion 41 is provided with an operating portion 42 projecting therefrom. In this case, the locking portion 41 is biased by a spring (not shown) so as to rotate forward (C), that is, in the direction of engaging the locked portion 39.

There is provided another rotation preventing means 45 for preventing the rear leg 14 from rotating forward with respect to the seat cushion 8 more than a predetermined amount. The rotation preventing means 45 includes a locked concave portion 46 formed on the upper end portion of the rear leg 14,
The bracket 22 of the rear upper pivot support 16 is pivotally supported by a pivot shaft 47 so as to be reciprocally rotatable (E, F), and is engaged with and disengageably engaged with the locked recessed portion 46 by this forward pivot (E). And a locking arm portion 48 to be fitted. In this case, the locking arm portion 48 is biased by a spring (not shown) so as to rotate forward (E), that is, in the direction of engaging with the locked recessed portion 46.

An interlocking cable 49 is provided for interlockingly connecting the bracket 26 of the front lower pivot support 17 and the locking arm portion 48 to each other, and a middle portion of the interlocking cable 49 in the longitudinal direction is the seat cushion 8 and the front leg. The guide tube 50 is fixed to the guide tube 13 so as to be slidable only in the longitudinal direction thereof.

On the lower end of the front leg 13, there is provided a connecting tool 53 which is an interlocking link of a metal elastic rod having a circular cross section for interlockingly connecting the lower end of the rear leg 14. This connector 53
Is elastically bendable, a front end that is one end thereof is pivotally supported by the pivot shaft 27 on the lower end of the front leg 13, and a rear end that is the other end is the lower end of the rear leg 14. The part is pivotally supported by another pivot 55. In addition, the connecting tool 5
3 is bent and formed in a substantially V-shape in a side view of the vehicle body 1 so that a part 53a in the longitudinal direction thereof projects toward a middle portion of the bottom surface 6a of the seat cushion 8 of the seat body 6 in the front-rear direction. There is. In addition, the seat cushion 8
The bottom portion of is made of a rigid plate material such as a resin undercover, and the lower surface of this plate material is the bottom surface 6a. The front end of the connecting tool 53 may be pivotally supported on the floor panel 2 or the bracket 26 of the front lower pivot support 17 near the lower end of the front leg 13, that is, via the floor panel 2 or the bracket 26. It may be connected to the lower end of the front leg 13.

In FIGS. 1 and 2, the seat body 6 is positioned at the last portion of the forward and backward movable range of the seat 4 in the "sedentable posture" and is supported by the support means 7. In this case, the front leg 13 comes into contact with the rear rotation stopper 34 to prevent further rearward rotation of the floor panel 2. Further, the locking portion 41 engages with the cutout at the lowermost end of the locked portion 39 in the rotation preventing means 38, and the seat cushion 8 centered on the pivot shaft 23 of the front upper pivot support 15. The relative rotation with the front leg 13 is prevented.
Furthermore, the locked recessed portion 4 in the other rotation preventing means 45.
The engaging arm portion 48 is engaged with 6 to prevent relative rotation between the seat cushion 8 and the rear leg 14 around the pivot shaft 24 of the rear upper pivot support 16.

Therefore, the seat body 6 is the last portion of the seat 4 in the "sedentable posture", and the rear rotation stopper 34 and both rotation prevention means 38, 4 in the support means 7 are provided.
And 5 firmly support the floor panel 2. When the rotation blocking means 38 blocks the relative rotation between the seat cushion 8 and the front legs 13, the relative rotation between the seat cushion 8 and the rear legs 14 is also indirectly blocked. The rotation blocking means 45 may be omitted.

From the last portion of the seat body 6 in the "sedentable posture" of the seat 4 shown in FIGS. 1 and 2 and the chain double-dashed line in FIG. When the locking portion 41 is disengaged from the locked portion 39 by the backward rotation (D), the front of the seat body 6 is rotated by the front rotation of the front and rear legs 13 and 14 with respect to the floor panel 2. Movement is allowed.

Therefore, the pivot shaft 27 of the front lower pivot support 17 is
And the locking portion 29 of the locking tool 18 as the center, the front and rear legs 1
When the seats 3 and 14 are rotated forward to move the seat body 6 forward so as to be positioned at the foremost position in the "seated posture" of the seat 4, as shown by the solid line in FIG. Further forward rotation is prevented by the front rotation stopper 35. Therefore, when the locking portion 41 of the rotation preventing means 38 is rotated forward (C), the locking portion 41 engages with the notch at the uppermost end of the locked portion 39, and the front upper portion The relative rotation between the seat cushion 8 and the front leg 13 around the pivot 23 of the pivot 15 is prevented.

Therefore, the seat body 6 has the front rotation stopper 35 and the rotation prevention means 3 in the support means 7.
8 firmly supports the floor panel 2 so that the seating position for the seat 4 is changed from the last position in the "sedentable posture" to the foremost position. When the seat body 6 is located at the last portion, the shape of the connecting tool 53 is free,
When the seat body 6 is moved to the foremost position, the distance between the pivot 27 and the other pivot 55 changes,
At this time, the connector 53 is slightly elastically deformed and bent, so that the change in dimension is absorbed.

The state of the last portion of the seat body 6 in the "sedentable posture" of the seat 4 shown by the two-dot chain line in FIG. 3 (or by the solid line in FIG. 3). From the state of the foremost part of the seat body 6 in the "seated posture" of the seat 4), the locking portion 41 of the rotation preventing means 38 is described.
When the locking portion 41 is disengaged from the locked portion 39, the front and rear legs 13 and 14 rotate forward (or backward) relative to the floor panel 2. ), The forward movement (or backward movement) of the seat body 6 is permitted.

Therefore, the pivot shaft 27 of the front lower pivot support 17 is
And the locking portion 29 of the locking tool 18 as the center, the front and rear legs 1
3 and 14 are rotated forward (or backward) to move the seat body 6 forward (or backward) so that the seat body 6 is positioned at a midway portion in the front-rear direction in the "seated posture" of the seat 4. Then, the locking portion 41 of the rotation preventing means 38.
When the locking portion 41 is engaged with the notch in the middle of the locked portion 39 by rotating the forward rotation (C), the front upper pivot support 1
The relative rotation of the seat cushion 8 and the front leg 13 around the pivot shaft 23 of 5 is prevented, and, for example, the position change of the seat body 6 is prevented at the position indicated by the alternate long and short dash line in FIG. As a result, the seating position for the seat 4 is
It can be changed to a midway part in the front-back direction in the "sedentable posture".

In the above case, when the seat body 6 is moved forward from the last portion, the interlocking cable 49 slides forward in the guide tube 50, and the guide tube 50 rotates the locking arm portion 48 backward ( F), the locking arm portion 48 is separated from the locked recessed portion 46, so that the rotation prevention by the other rotation prevention means 45 is automatically released. On the other hand, when the seat body 6 moves rearward and returns to the last portion, the locking arm portion 48 is rotated forward (E) by the urging force of a spring (not shown), and again moves to the locked recessed portion 46. As a result, the rotation prevention by the other rotation prevention means 45 described above is automatically obtained.

In the above case, the front body and the rear legs 13 and 14 are pivoted forward with respect to the floor panel 2 so that the seat body 6 is rotated.
When trying to move forward from its last part,
The rotation of the front and rear legs 13 and 14 is caused by the rotation of the first and second springs 3
It is urged by 2, 33, and therefore, the forward movement from the last portion of the seat body 6 can be performed lightly.

On the other hand, when the seat body 6 is to be moved rearward from the midway portion by the rearward rotation of the front and rear legs 13 and 14 with respect to the floor panel 2, the first and second springs 32 and 33 are attached. Although it is necessary to resist the force, the rearward movement of the seat body 6 is normally performed by utilizing the weight of the seated person, and thus the rearward movement of the seat body 6 is performed lightly.

Further, when the seat body 6 moves rearward from the midway portion toward the last portion and the rearward movement lowers backward, the urging force of the first and second springs 32, 33 described above is applied to the seat. Since the rapid movement of the main body 6 to the lower rear side is suppressed, it is possible to prevent the seated person sitting on the seat body 6 from being given a feeling of falling downward rearward when the seat main body 6 is moved rearward.

When the seat body 6 moves forward from the midway portion side and approaches the frontmost portion, the overall biasing force of the first and second springs 32 and 33 causes the front leg 13 to move toward the floor panel 2. It is set so as to urge it to rotate backward.

Therefore, when the seat body 6 moves forward from the midway portion toward the foremost portion, and this forward movement is the forward downward movement, the urging force of the first and second springs 32 and 33 is the above. In order to prevent the seat body 6 from moving rapidly downward to the front, it is possible to prevent the seated person sitting on the seat body 6 from feeling that the seat body 6 should fall forward and downward. .

According to the above construction, in short, in the "seated position" of the seat 4, by operating the rotation preventing means 38, the front and rear legs 13, 1 with respect to the seat cushion 8 will be described.
4 is allowed to rotate, and then these front and rear legs 13 and 14
Is rotated with respect to the floor panel 2 and the seat cushion 8 to change the seat body 6 to a desired position in the front-rear direction, and the front and rear legs 13, 14 are rotated relative to the seat cushion 8 at this position. By blocking the rotation by the rotation blocking means 38 at the moving position, the seat body 6 can be supported at a desired position in the front-rear direction of the floor panel 2, that is, the seating position on the seat 4 can be set. It can be changed back and forth according to the physique and preference of the seated person.

As indicated by the solid line in FIG. 1, when the seat back 9 is rotated forward (A) from the state in which the seat body 6 is located at the last position in the "seated position" of the seat 4, The seat back 9 can be superposed on the upper surface side of the seat cushion 8 (two-dot chain line in FIG. 1).

4 and 5, when the locked portion 30 is disengaged from the locking portion 29 of the locking tool 18, that is, the rear leg 14 is disengaged from the floor panel 2, The seat 4 with the seat back 9 superposed on the seat cushion 8 is reciprocally rotatable forward and upward around the pivot shaft 27 of the front lower pivot support 17.

When the seat 4 is to be stored when it is not used, the seat back 9 is placed on the seat cushion 8 and the pivot shaft of the front lower pivot support 17 is used as described above. The seat 4 is rotated forward and upward around 27, which will be described more specifically.

The seat back 9 is attached to the seat cushion 8.
In the state where they are overlapped with each other, the locking of the locked portion 30 with respect to the locking portion 29 of the locking tool 18 is released, while the front leg 13 is centered around the pivot shaft 27 of the front lower pivot support tool 17. The seat body 6 is rotated forward to a predetermined rotational position, and further rearward rotation is blocked by the rearward rotation stopper 34 (solid line in FIGS. 4 and 5), and the seat body 6 is moved forward. 15
It is rotated forward and upward about the pivot shaft 23 of FIG. 2 to be in a vertically long posture (solid line in FIG. 4).

In the above state, the rotation preventing means 38
When the locking portion 41 is released from the locked portion 39 in
The first spring 32 urges the seat body 6 so as to rotate forward and upward around the pivot shaft 23 of the front upper pivot support 15, that is, the first spring 32 moves the seat. The body 6, the front legs 13, the rear legs 14, and the connecting member 53 are urged so as to form a rhombus that is long in the vertical direction and has a small width dimension in the front-rear direction in the side view of the vehicle body 1. The width dimension of is small and compact.

From the above state, the seat body 6 is further rotated forward and upward around the pivot shaft 23 of the front upper pivot support 15 to a predetermined rotational position which is separated upward from the floor panel 2. When the seat 4 is rotated (dashed line in FIGS. 4 and 5), the seat 4 is set in a rhombic "storage posture" having a smaller width dimension. As described above, when the seat 4 is set in the "storage posture", the storage stopper 56 is provided to prevent the seat main body 6 from further rotating in the upper front direction. The locking portion 41 of the rotation preventing means 38 and a stopper surface 57 formed on the front leg 13 for contacting the locking portion 41. And
The seat 4 is to be stored in the "storage posture" (dotted line in FIGS. 4 and 5).

In the above case, when the seat 4 is rotated forward and upward around the front lower pivot support 17, the biasing of the second spring 33 promotes the rotation of the seat 4 forward and upward,
Therefore, the work of storing the seat 4 can be performed lightly and easily.

4 and 5, when the seat 4 is rotated forward and upward with the front lower pivot support 17 as a center, the rotation preventing means 38 is interlocked with the rotation of the seat 4 forward and upward. A rotation blocking release mechanism 58 for automatically releasing the rotation blocking state of the front leg 13 is provided.

The rotation blocking release mechanism 58 includes a release arm 60 pivotally supported by the front leg 13 by a pivot shaft 59.
And a link 61 for connecting the release arm 60 to the bracket 26 of the front lower pivot support 17.

When the seat 4 is rotated forward and upward with the front lower pivot support 17 as a center from a state in which the seat body 6 is located at the last position in the "sedentable posture" of the seat 4. The rotation of the release arm 60 is controlled by the link 61 connecting the release arm 60 to the bracket 26 of the front lower pivot support 17, and the release arm 60 engages with the locked portion 39. The engaged locking portion 41 is forcibly rotated back (D) to release the engagement, that is, the rotation blocking state of the front leg 13 by the rotation blocking means 38 is set. It will be canceled automatically. Further, at this time, as described above, the interlocking cable 49 is used even when the rotation of the rear leg 14 is blocked by the other rotation blocking means 45.
And is released by the guide tube 50. Then,
As described above, the seat 4 is formed into a rhombic shape and compact by the biasing force of the first spring 32.

According to the above-mentioned structure, the pivot shaft 2 of the front lower pivot support 17 is attempted to be moved from the "seating position" of the seat 4 to the "storage position" for accommodating the seat 4.
When the front leg 13 is pivoted forward and upward with respect to the center, the pivotal blocking state of the front leg 13 by the pivotal blocking means 38 is automatically released, and thereafter, it is in a "sedentable posture". With the help of the urging forces of the first and second springs 32 and 33, the seat 4 can be made into a compact shape in the front-rear direction, such as a vertically long rhombus, and the storage space can be reduced.

Further, as described above, when the seat 4 is brought into the compact "storage posture", the operation for the rotation preventing means 38 is unnecessary, and therefore the seat 4 is brought into the "storage posture". Work becomes easier.

As described above, the front leg 13 is rotated about the pivot shaft 27 of the front lower pivot support 17 to a predetermined rotation position (solid line in FIGS. 4 and 5), and the seat body 6 is rotated. Is rotated forward and upward to a predetermined rotational position about the pivot shaft 23 of the front upper pivot support 15, so that the seat 4 is in the "storage posture".
When it is set (dashed-dotted line in FIGS. 4 and 5), the front leg 13 and the seat body 6 are prevented from further rotating forward and the rearward rotation from here is also prevented. Locking means 65 for locking and disengaging the seat cushion 8 is provided on the floor panel 2 so as to maintain the "storage posture" of No. 4.

When the front leg 13 pivots about the pivot shaft 27 of the front lower pivot support 17 to a predetermined pivot position, the locking means 65 prevents the front pivot further from turning forward. When the movement stopper 35 and the seat body 6 are pivoted forward and upward to a predetermined pivot position about the pivot shaft 23 of the front upper pivot support 15, further pivotal movement is prevented. And the stopper 56 for storage.

Further, the locking means 65 is used for the front leg 13
In the vicinity of the front of the floor panel 2, the upper end thereof is pivotally supported on the floor panel 2 by the pivot shaft 66 via the bracket 26 so that the upper portion thereof is rotatable in the front-rear direction. The arm 67 and the rotating arm 6
7, a spring 68 for urging the rotating arm 67 to rotate forward, a stopper means 69 for preventing the rotating arm 67 from rotating further forward when the rotating arm 67 is rotated forward to a predetermined rotating position, and the rotating arm 67. A notch-shaped engaging portion 72 that is integrally provided at the turning end of the seat, and can be engaged with and disengaged from the engaging portion 72 when the seat 4 is fixed to the seat cushion 8 and the seat 4 is in the "storage posture". And a shaft-shaped locked portion 73 that is locked to.

In the above case, the pivot shaft 23 of the front upper pivot device 15
Immediately before the locked portion 73, which rotates with the forward and upward rotation of the seat body 6 around the center, is about to be locked by the locking portion 72, the locked portion 73 is engaged. While sliding on the upper end surface of the stopper 72 while pressing it, the pivot arm 67 together with the stopper 72 is pivoted rearward while resisting the urging force of the spring 68 (a chain line in FIG. 5). ) Then, the locking portion 72 which rotates forward together with the rotating arm 67 by the biasing force of the spring 68 automatically locks the locked portion 73.

The engaging portion 72 has a notch shape, and when the engaged portion 73 is engaged with the engaging portion 72,
Rotation of the seat body 6 back and forth around the pivot shaft 23 of the front upper pivot support 15 is firmly prevented without rattling. As a result, the seat 4 is in the "storage position"
Held in.

In the above case, the storage stopper 56 may be omitted due to the existence of the engaging portion 72 and the engaged portion 73. On the contrary, the storage stopper 56 may be left, and the locking portion 72 may simply have a hook shape.

In particular, in FIG. 4, as described above, when the seat 4 is brought into the "stored posture", a part 53a in the longitudinal direction of the connector 53 is a part of the seat cushion 8 of the seat body 6. The rear leg 14 is pressed against a certain bottom surface to prevent the rear leg 14 from rotating further forward around the rear upper pivot support 16.

For this reason, as described above, when the front leg 13 and the seat body 6 are rotated toward the predetermined rotational position in order to bring the seat 4 into the "storage posture", the front leg 13 and the seat body 6 are connected to the front leg 13. Rear leg 14 that is interlocked via the tool 53
However, it is prevented from unnecessarily turning forward about the rear upper pivot support 16 unnecessarily, and a predetermined turning position (see FIG.
The seat 4 is kept in the middle one-dot chain line) and positioned, so that the seat 4 is in the "storage posture".

Therefore, thereafter, when the front leg 13 and the seat body 6 are rotated in the opposite direction to the above to return the seat 4 to the "sedentable posture", the connecting member 53 is attached to the front leg 13.
The rear legs 14 can be smoothly interlocked with each other via the seat, that is, when changing the posture of the seat 4 from the "stored posture" to the "seedable posture", the change work can be surely performed smoothly. Becomes

The connector 53 is made of a rod member, one end of which is pivotally supported by the lower end of the front leg 13 and the other end of which is pivotally supported by the lower end of the rear leg 14. A part 53a in the longitudinal direction of the connecting body 53 is formed in a substantially V shape protruding so as to curve toward the bottom surface 6a of the seat body 6, and when the seat 4 is in the storage posture. A part 53a is pressed against the bottom surface 6a which is a part of the seat body 6.

For this reason, when the seat 4 is brought into the "stored posture", the connector 53 has the seat 4 in the "stored posture".
Although it is located in the rear part, the connector 53 in this "storage posture" extends in the up-down direction, and is a part 5 which is an intermediate part thereof.
3a has a substantially doglegged shape in a side view of the vehicle body 1 protruding so as to curve forward.

Therefore, the inner space of the connecting member 53,
The space of the vehicle compartment 3 behind the seat 4 in the "storage posture" is widened, which is useful for riding and working.

In the above case, since the connecting member 53 is formed of the rod material, it is possible to achieve the above-described posture changing operation with a simple structure. Further, since the bottom surface 6a of the seat cushion 8 of the seat body 6 that presses the part 53a of the connecting tool 53 is formed of a rigid plate material, even if the part 53a presses the bottom surface 6a, The bottom surface 6a is prevented from being deformed, and accordingly, the rear leg 14 can be more accurately positioned at the predetermined rotation position.

Further, when the seat 4 is in the "accommodating posture", the connecting member 53 is an elastic body, and a part 53a of the connecting member 53 is pressed against the bottom surface 6a of the seat cushion 8. , And the pivot points of the connecting tool 53 for interlocking them are prevented from rattling. Also, although the connecting tool 53 is long, the middle part of the connecting tool 53 is also prevented from rattling. The generation of sound is prevented.

The bottom portion of the seat cushion 8 will be described in more detail. The bottom portion includes a base portion made of the above-mentioned rigid plate material and the base portion at a portion facing the portion 53a of the connecting tool 53. An elastic body is attached to the bottom surface (lower surface) by adhesion, and the bottom surface of the elastic body is the bottom surface 6a, and a part 53a of the connector 53 is pressed against the elastic body, that is, via the elastic body. Are pressed against the plate material. The elastic body is a rubber elastic plate having a thickness of 3 mm.

According to the above construction, the part 53a of the connecting member 53 elastically presses against the bottom surface 6a of the seat cushion 8. Therefore, first, vibrations during running of the automobile rub against the press contact portion. Is prevented from occurring. Secondly, the plate material of the bottom surface 6a of the seat cushion 8 is prevented from being worn and damaged. Thirdly, in addition to the elastic deformation of the connecting member 53, the elastic deformation of the elastic body absorbs a dimensional error that occurs between the components such as the connecting member 53 of the sheet 4 and thus the above-described respective structural components. Since high dimensional accuracy is not required, molding becomes easy.

2, 5 and 6, the locking state of the locking means 65 in which the locked portion 73 is locked to the locking portion 72 can be released by inputting an operating force G from the outside. The unlocking operation means 75 is provided, and by releasing this locking, the holding of the "storage posture" is released.

The unlocking operation means 75 has an end portion 77.
Is connected to a midway portion of the rotating arm 67 in the longitudinal direction,
The other end portion 78 projects rearward from the rotating arm 67, and the other end portion 78 is provided with a flexible tension body 79 that is a grip portion of an operator and is an input portion of the operating force G. . When the other end 78 of the pulling body 79 is gripped, the operating force G is input, and the pulling body 79 is pulled backward to move backward, the pivot arm 67 pivots backward in conjunction with this and the locking is performed. The lock between the portion 72 and the locked portion 73 can be released.

The tension member 79 is formed of a flexible belt material, has a long and thin ring shape in the front-rear direction in a plan view, and is provided with left and right side members 79a, 79a which are close to and face each other in the vehicle width direction. There is. The connector 5 is provided at the rear of the rotating arm 67 and at substantially the same position as the rotating arm 67 in the vehicle width direction.
3, a middle portion of the connector 53 is provided, and the middle portion of the connecting member 53 is penetrated between the left and right side pieces 79a, 79a in the middle portion of the tensile body 79 in the longitudinal direction. Also,
Left and right side pieces 79a, 79a of the other end portion 78 of the tension body 79.
Are sewn to each other and a sewn portion 80 is provided, and the sewn portion 80 and the end portion on the other end portion 78 side of the sewn portion 80 are easily gripped. The sewn portion 80 may be omitted.

According to the above construction, in particular, as shown in FIGS. 4 to 6, the front leg 13 is rotated forward about the front lower pivot support 17 to a predetermined rotation position, and the seat cushion 9 is seated back 9. The seat body 6 in a state of being superposed is pivoted forward and upward about the front upper pivot support 15 to a predetermined pivotal position upwardly separated from the floor panel 2, that is, the seat 4 is "stored". When it is in the "posture", the floor panel 2 is provided with the locking means 65 for automatically locking and disengaging the seat cushion 8, and the following effects are produced.

That is, the seat 4 is held in the "stored posture" by the locking of the seat cushion 8 by the locking means 65. In this case, the seat body 6 moves upward from the floor panel 2 as described above. Since it is located at a distance, the distance from the floor panel 2
It is possible to make the front legs 13 in a vertical orientation that is closer to vertical.

Therefore, the seat 4 including the front legs 13
The seat 4 can be made into a vertically long shape, so that the seat 4 can be made into a compact “storing posture” in the front-rear direction. Can be expanded.

Further, as described above, the front legs 13 and the seat body 6 are rotated to a predetermined rotation position so that these 6, 1
The seat cushion 8 of the seat body 6 is attached to the floor panel 2 when the seat 4 including the seat 3 is placed in the "storage posture".
The locking means 65 for automatically locking and disengaging the seat is provided, and by this locking, the seat 4 can be held in the "storage posture".

Therefore, since the seat 4 is held in the "stored position" automatically by the single locking means 65, the seat 4 is held in the stored position. Is achieved with a simple configuration, and
It is possible to easily operate the sheet 4 when holding it in this manner.

On the other hand, the operation for releasing the holding state of the "stored posture" is performed by a single locking means 65 in which the pulling body 79 is simply pulled to move backward.
A simple operation with respect to is sufficient, that is, the operation with respect to the seat 4 when releasing the holding of the above-mentioned "storage posture" can be easily performed.

5 and 6, in order to release the locking of the locked portion 73 by the locking portion 72, the other end 78 of the tension body 79 is grasped and pulled backward to move backward. When the pivot arm 67 is pivoted rearward about the pivot shaft 66 so as to be interlocked therewith, an unreasonable force is not generated around the pivot shaft 66 so that the tension can be smoothly performed. In order to achieve this, in the plan view of the vehicle body 1, the moving direction of the other end portion 78 of the tension body 79 is the rotation direction of the rotation arm 67 about the pivot shaft 66 (the diameter of the pivot shaft 66). It is preferable to make it coincide with the direction (solid line in FIG. 6).

Here, as described above, since the middle part of the connecting member 53 is made to penetrate between the left and right side pieces 79a, 79a of the tension body 79, the other end portion 78 of the tension body 79 is temporarily assumed. 6 is pulled in a direction inclined with respect to the turning direction of the turning arm 67 (two-dot chain line in FIG. 6), the midway portion of the tension body 79 in the longitudinal direction slides on the connector 53. Then, the one end portion 77 is guided so as to be pulled in substantially the same direction as the rotating direction of the rotating arm 67.

Therefore, in attempting to smoothly rotate the rotating arm 67, it is possible to prevent a strict restriction from being imposed on the pulling direction of the other end portion 78 of the pulling body 79, and to that extent, It is possible to easily operate the seat 4 for releasing the locking, that is, for releasing the holding in the "storage posture".

In addition, since the connecting member 53 has a circular cross section, when the tension body 79 is guided by the connecting member 53, the sliding movement is made smooth, so that the holding of the "storage posture" is released. The operation on the seat 4 for storing is further facilitated. Further, the easiness of the operation is achieved by using the connecting tool 53, that is, it is achieved by a simple structure.

When the holding of the "storage posture" is released as described above, the seat 4 is moved from this "storage posture".
The downward rotation is allowed. Therefore, the above-mentioned sheet 4
When the lever 4 is rotated rearward and downward, the release arm 60 allows the engagement of the engagement portion 41 with respect to the engagement portion 39 in the middle thereof, and this engagement and the further rearward and downward movement of the seat 4 are performed. By rotating the, it is possible to make it a "seated posture".

In the above case, when the seat 4 is pivoted rearward and downward, and the lower end portion of the rear leg 14 which is pivoted accordingly, is to be locked to the floor panel 2 by the locking tool 18. The lower end portion of the rear leg 14 is positioned at a predetermined position with respect to the locking tool 18 by the coupling tool 53 which interlocks the lower leg portion of the front leg 13 with each other. The locked portion 30 is securely and disengageably engaged with the locking portion 29, and the seat 4 is returned to the "sedentable posture".

2, 5 and 6, an interlocking body 84 for interlockingly connecting the rotating arm 67 to the front leg 13 is provided. The interlocking body 84 includes a link 85 extending in the front-rear direction. A long hole 86 extending in the longitudinal direction is formed at one end (front end) of the link 85, and the long hole 86 and the engaging pin 87 attached to the upper part of the rotating arm 67 slide back and forth. It is freely engaged. Also, the other end (rear end) of the link 85
Is pivotally supported on the upper part of the front leg 13 by a pivot shaft 88.

When the seat 4 is in the "accommodated posture", the engagement pin 87, which is pivoted forward together with the pivot arm 67 by the urging force of the spring 68, comes into contact with the front edge of the elongated hole 86 to pivot. Further forward rotation of the arm 67 is prevented (solid line in FIG. 5). Therefore, the interlocking body 84 constitutes the stopper means 69, and the stopper means 69 in the drawing may not be provided.

On the other hand, as described above, when the pulling body 79 is pulled and the turning arm 67 is turned rearward in order to release the locking of the locked portion 73 by the locking portion 72, this rotation The engagement pin 87, which rotates rearward together with the arm 67, slides rearward in the elongated hole 86 to allow the release of the locking (two-dot chain line in FIG. 5).

According to the above construction, the locking means 65 projects upward in the vicinity of the front of the front leg 13 from the floor panel 2 side, and the lower end thereof is rotatable in the front-rear direction. A rotating arm 67 pivotally supported by the floor panel 2, a locking portion 72 provided at a rotating end of the rotating arm 67, and a locking portion 72 provided on the seat cushion 8 and detachable from the locking portion 72. The locked portion 73 to be locked and the interlocking body 84 for interlockingly connecting the rotating arm 67 to the front leg 13 are provided.

Therefore, when the front leg 13 is rotated in the front-rear direction, such as when the seating position on the seat body 6 is changed, the rotating arm 67 is moved by the interlocking member 84 to move the front leg 13 from the front leg 13. The front legs 13 rotate in the vicinity.

Therefore, the rotating arm 67, which is a part of the component of the locking means 65, is fixed to the seat 4 regardless of whether the seat 4 is in the "seated position" or the "stored position". It is possible to prevent the seat body 6 and the supporting means 7 from significantly protruding outward, and the seat 4 can be kept compact as a whole in any posture.

[0094]

The effects of the present invention are as follows.

According to the first aspect of the present invention, the seat body is provided with the seat located above the floor panel of the vehicle body, and the supporting means for supporting the seat body on the floor panel. The supporting means comprises the seat. The front and rear legs, which extend downward from the lower surface side of the main body, and the front and rear upper pivots of which the upper ends of the front and rear legs are pivotally supported by the seat body so that the front and rear legs can rotate back and forth. Tool, a front lower pivot support tool for pivotally supporting the lower end portion of the front leg on the floor panel so that the front leg can rotate back and forth, and a lower end portion of the rear leg releasably locked to the floor panel. And a locking tool for pivotally supporting the rear leg on the floor panel so as to be rotatable back and forth in this locked state, and a connecting tool for connecting the lower end portion of the rear leg to the lower end portion of the front leg. In the position and posture changing device for automobile seats

The front leg is pivoted forward to a predetermined pivot position about the front lower pivot support, and the seat body is centered on the front upper pivot support by releasing the lock by the lock. When the seat is turned to the "retracted posture" by rotating the seat to the predetermined rotating position in the front upper direction, a part of the connecting tool is pressed against a part of the seat body, and the rear upper pivot support is attached. Further rotation of the rear leg around the center is prevented.

For this reason, as described above, when the front leg and the seat body are rotated toward the predetermined rotation position in order to bring the seat into the "storage posture", the front leg is interlocked with the connecting tool. The rear leg is prevented from unnecessarily pivoting forward around the rear upper pivotal support, is kept in a predetermined pivot position and is positioned, and the seat is in the "storage posture".

Therefore, thereafter, when the front leg and the seat body are rotated in the opposite direction to the above to return the seat to the "sedentable posture" in which the seat can be normally seated, the front leg and the connecting tool are interposed. The above-mentioned rear legs will smoothly interlock,
That is, when the posture of the seat is changed from the "storage posture" to the "seated posture", this change can be surely made smooth.

According to a second aspect of the present invention, the connector is a bar member having one end pivotally supported by the lower end of the front leg and the other end pivotally supported by the lower end of the rear leg. When a part of the connecting tool is formed so as to have a substantially V shape protruding toward the bottom surface of the seat body, and when the seat is in the "storage posture", a part of the connecting tool is the seat. It is pressed against the bottom of the body.

Therefore, when the seat is brought into the "storage posture", the above-mentioned connecting tool is located at the rear portion of the seat in this "storage posture", but the connecting tool in this "storage posture" extends in the vertical direction. In addition, a part of the middle portion thereof projects toward the front and has a substantially doglegged shape in a side view.

Therefore, the space in the vehicle interior behind the seat in the "storage posture" is widened by the inner space of the connector, which is useful for riding and working.

Further, in the "stored posture" of the seat, since a part of the connecting tool is pressed against the seat cushion of the seat body, the front legs, the rear legs, and the pivot points of the connecting tool for interlocking them. It is possible to prevent rattling, and to prevent rattling of the middle part of the connecting tool even though the above-mentioned connecting tool is long, thereby preventing generation of abnormal noise.

[Brief description of drawings]

FIG. 1 is an overall side view of a seat when a seat body is in a final position in a “seated posture” of the seat.

FIG. 2 is a partially enlarged view of FIG.

FIG. 3 is an operation explanatory view corresponding to FIG. 1 for explaining an operation in a “seated posture” of the seat.

FIG. 4 is a view for explaining the operation when storing a sheet.
It is an operation explanatory view corresponding to.

FIG. 5 is a partially enlarged view of FIG.

6 is a sectional view taken along line 6-6 of FIG.

[Explanation of symbols]

1 car body 2 floor panels 3 car compartment 4 seats 6 seat body 6a Bottom (part) 7 Supporting means 13 front legs 14 hind legs 15 Front upper support 16 Rear upper support 17 Front lower support 18 Locking tool 53 Connector 53a part

Claims (2)

(57) [Claims] 1. A seat main body in which a seat is located above a floor panel of a vehicle body, and support means for supporting the seat main body on the floor panel, the support means extending downward from a lower surface side of the seat main body. The front and rear legs, the front and rear upper legs, and the front and rear upper legs that pivotally support the upper and lower ends of the front and rear legs to the seat body so that the front and rear legs can rotate back and forth. Front lower pivoting tool for pivotally supporting its lower end portion on the floor panel so that the lower end portion of the rear leg can be freely rotated, and the lower end portion of the rear leg is detachably engaged with the floor panel, A position of a vehicle seat including a locking tool for pivotally supporting the rear leg on the floor panel so as to be rotatable back and forth, and a connector for connecting the lower end portion of the rear leg to the lower end portion of the front leg, In the posture varying device, the front leg is attached to the front lower pivot. The seat body is rotated forward to a predetermined rotation position and the locking by the locking device is released to rotate the seat body forward and upward to a predetermined rotation position about the front upper pivot support. Then, when the seat is brought into the storage posture, a part of the connecting tool is pressed against a part of the seat body to further rotate the rear leg about the rear upper pivot support. A position / posture changing device for an automobile seat that is designed to be blocked. 2. The connecting tool is formed of a bar member, one end of which is pivotally supported by the lower end of the front leg and the other end of which is pivotally supported by the lower end of the rear leg. A part of the connector is formed so as to have a substantially V shape protruding toward the bottom surface of the seat body, and when the seat is in the storage posture, a part of the connector is pressed against the bottom surface of the seat body. The position / posture varying device for a vehicle seat according to claim 1.