JP2000177456A - Changing device for position and attitude of automobile seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To certainly and smoothly change an attitude of a seat, and an enlarge a cabin space in the rear of a seat having a housing attitude. SOLUTION: A support means 7 through which a seat body 6 is supported on a floor panel 2 has front and hind legs 13, 14; front and back upper pivotal supports 15, 16 through which the seat main body 6 pivotally supports the front and hind legs 13, 14; a front lower pivotal support 17 through which the floor panel 2 pivotally supports the front leg 13; a lock tool 18 with which the hind leg 14 is locked on and pivotally supported by the floor panel 2; and a connector 53 for connecting the hind leg 14 with the front leg 13. When an attitude of a seat 4 is changed into a housing posture by turning the front leg 13 around the front lower pivotal support 17 and turning the seat body 6 around the front upper pivotal support 15 with the lock by the lock tool 18 released, a part 53a of the connector 53 is brought into pressure-contact with a part of the seat body 6 to prevent further turning of the hind leg 14 around the back upper pivotal support 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a compact seat by changing the seating position of a seat provided on a floor panel of a vehicle body back and forth, and rotating the seat forward and upward from a seatable posture. The present invention relates to a device for changing the position and attitude of an automobile seat that can be changed to a storage attitude.

[0002]

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

According to the above publication, the seat includes a seat body located above a floor panel of a vehicle body, and support means for supporting the seat body on the floor panel. It has been.

In the above arrangement, recently, the support means extends before and below the lower surface of the seat body, and rear legs, and each of the front and rear legs so that the front and rear legs can be freely rotated back and forth. Before pivoting the upper end to the seat body, a rear upper pivot, a front lower pivot that pivots the lower end to the floor panel so as to allow the front leg to rotate back and forth, and A locking member for locking a lower end of a leg to the floor panel so as to be freely detachable and locking the rear leg to be rotatable back and forth in the locked state; and a lower end of the front leg. There has been proposed a device provided with a connecting member for connecting a lower end portion of the rear leg to the portion.

According to the seat having the above structure,
While rotating the rear leg in the front-rear direction around the front lower pivot support and the locking device, the seat body and the front, the front leg, the front, relatively rotate around the rear upper pivot support, Thus, 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 so as to suit the physique and preference of the seated person.

Further, the front leg is pivoted forward to a predetermined pivot position around the front lower pivotal support, and the locking by the latch is released, and the seat body is pivoted around the front upper pivotal support. When pivoted forward and upward to a predetermined pivot position,
In a side view of the vehicle body, the line connecting the pivot point between the front upper support, the rear upper support, the front lower support, and the rear leg and the connector is a vertically elongated rhombus with a small width dimension in the front-rear direction. Thus, the seat is set to be in a vertically long storage position in the front-rear direction, whereby the riding space and the working space in the vehicle compartment are expanded.

[0007] In addition, if the sheet having the vertically long, small-width diamond-shaped storage position as described above is rotated rearward and downward about the front lower pivot support as the center, the above-described diamond shape is obtained. As the width dimension of the rectangle gradually increases, it approaches a rectangle,
The lower end of the rear leg is automatically locked to the floor panel by the locking tool, and the seat is returned to the original seatable position.

In the above case, by turning the seat backward and downward,
When the lower end of the rotating rear leg is to be locked to the floor panel by the locking device, the lower end of the rear leg is connected 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 performed smoothly.

[0009]

However, the above-mentioned conventional technology has the following problems.

That is, since the components of the seat described above have dimensional errors and assembly errors also occur when they are assembled, when the seat is placed in the storage position as described above, Therefore, there is a risk that the pivot point between the rear leg and the connecting tool may cross the imaginary line connecting the rear upper support and the front lower support to the seat body side.In this case, the seat is moved from this storage position. When trying to return to a seatable posture, the rear legs try to face the bottom side of the seat body around the rear upper support, and the rear legs are manually turned to the original position. Otherwise, there is a possibility that the seat cannot be changed from the stowed position to the seated position.

[0011] 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 rotated forward and upward about the front lower pivotal support so that the storage posture and the storage posture can be improved. In this case, the connecting member is located at the rear of the seat in this storage position, and the space in the passenger compartment behind the seat may be unnecessarily narrowed by the connecting member.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and when the posture is changed from a seat storage posture to a seatable posture, it is possible to ensure that the work of this change can be smoothly performed. It is another object of the present invention to increase the space in the vehicle compartment behind the seat in the storage posture.

[0013]

Means for Solving the Problems An apparatus for changing the position and attitude of an automobile seat according to the present invention for solving the above-mentioned problems is as follows.

According to the first aspect of the present invention, there is provided a seat body 6 in which the seat 4 is located above the floor panel 2 of the vehicle body 1, and support means 7 for supporting the seat body 6 on the floor panel 2. Before the means 7 extends downward from the lower surface side of the seat body 6, the rear legs 13, 14;
Before the upper ends of the front and rear legs 13 and 14 are pivotally supported by the seat body 6 so as to be rotatable back and forth, the rear upper pivotal supports 15 and 16 and the front legs 13 are pivoted back and forth. A front lower pivot 17 for pivotally supporting the lower end to the floor panel 2 so as to be freely movable, and a lower end of the rear leg 14 to be detachably engaged with the floor panel 2 and in this locked state. A locking member 18 for pivotally supporting the rear leg 14 on the floor panel 2 so as to be rotatable back and forth, and a connecting member 53 for connecting the lower end of the rear leg 14 to the lower end of the front leg 13 are provided. In the device for changing the position and attitude of the car seat,

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

According to a second aspect of the present invention, in addition to the first aspect, the connecting member 53 is pivotally supported at one end to the lower end of the front leg 13 and at the other end to the lower end of the rear leg 14. A part 53a in the longitudinal direction of the connecting tool 53, which is constituted by a pivotally supported bar.
Is formed so as to have a substantially U-shape protruding toward the bottom surface 6a of the seat body 6, and when the seat 4 is in the storage posture, a part 53a of the connecting tool 53 is 6a.

[0017]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a vehicle body of an automobile, and an arrow Fr indicates a front of the vehicle body 1 of the automobile.

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. The vehicle compartment 3 is for passengers such as occupants. A seat 4 is provided. This sheet 4
The seat body 6 located above the floor panel 2
And support means 7 for supporting the seat body 6 on the floor panel 2.

The seat body 6 is mounted on the floor panel 2.
, A seat back 9 protruding upward from the rear end side of the seat cushion 8, and a lower end of the seat back 9 being attached to a rear end of the seat cushion 8. Pivot means 1 to pivot
0, the seat back 9 is reciprocally pivotable (A, B) forward and downward about the pivot means 10. Although not shown, the seat back 9 is not shown.
Is provided with a reclining means capable of preventing the rotation of the lens at an arbitrary rotation position.

The above-mentioned seat 4 is set to a "seat-possible posture" for a seated person, that is, the seat cushion 8 of the seat body 6 is set to a seated-seat position.
The seat back 9 is in a posture in which a seat can be rested while sitting on the seat cushion 8.

The support means 7 includes a pair of left and right sheet metal front legs 13 extending downward from the lower surface of the front portion of the seat cushion 8 and downward from the lower surface of the rear portion of the seat cushion 8. Extending pair of left and right sheet metal rear legs 1
4, before and after the upper ends of the front and rear legs 13 and 14 are pivotally supported by the seat cushion 8 so that the front and rear legs 13 and 14 can be rotated back and forth. A front lower pivot support 17 for pivotally supporting the lower end of the rear panel 14 to the floor panel 2 so as to be freely rotatable; and a locking fixture for releasably engaging the lower end of the rear leg 14 to the floor panel 2. 18 is provided.

The front and rear pivotal supports 15 and 16 are respectively fixed to the brackets 21 and 22 so as to project from the lower surface of the seat cushion 8.
The front and rear legs 1 are attached to the brackets 21 and 22, respectively.
Pivot shafts 23 and 24 for pivotally supporting the respective upper end portions 3 and 14. 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 of the front leg 13 to the bracket 26.
And

The locking member 18 includes a locking portion 29 fixed to the floor panel 2 and serving 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 is removably locked to the locking portion 29 by the vertical movement of the rear leg 14 and is opened downward. ,
A holding means (not shown) is provided to enable the locked portion 30 to be held in a 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 about the locking portion 29, that is, the locking of the locking member 18. The portion 29 is pivotally supported by the floor panel 2 so that the rear leg 14 is rotatable back and forth.

A first spring 32 is externally fitted to a pivot shaft 23 of the front upper pivotal support 15, and the first spring 32 is attached to the front leg 13 with respect to the front leg 13 around the pivot shaft 23. Is urged to rotate forward. A second spring 33 is externally fitted to the pivot 27 of the front lower pivot 17, and the second spring 33 moves the front leg 13 forward with respect to the floor panel 2 about the pivot 24. It is biased to rotate.

The front lower support 17 is opposed to the second spring 33.
When the front leg 13 is rotated to a predetermined rearward rotation position about the pivot shaft 27, a rear rotation stopper 34 that abuts a part of the front leg 13 to prevent further rearward rotation.
Thereafter, the rotation stopper 34 is fixed to the floor panel 2. Further, when the front leg 13 is rotated to a predetermined front rotation position around the pivot shaft 27 of the front lower pivot support 17, a part of the front leg 13 is brought into contact with the front leg 13 for further forward rotation. The front rotation stopper 35 is provided to prevent the front lower pivot support 17 from moving.
Of the bracket 26.

Before the seat cushion 8,
A rotation preventing means 38 is provided which can prevent the rotation of at least one of the rear legs 13 and 14 at an arbitrary rotation position. Specifically, the rotation preventing means 38 is connected to the front leg 1.
3 and a plurality of notched locked portions 39 formed at an upper end portion of the front leg 13 and a bracket 21 of the front upper support 15 by a pivot shaft 40 for reciprocating rotation. (C, D) an arm-shaped locking portion 41 which is freely pivotally supported and selectively engages with and engages with one of the notches of the locked portion 39 in the forward rotation (C); An operation portion 42 protruding from the locking portion 41 is provided. In this case, the locking portion 41 is urged by a spring (not shown) so as to rotate forward (C), that is, urged in a direction to engage with the locked portion 39.

Another rotation preventing means 45 is provided which can prevent the rear leg 14 from rotating forward with respect to the seat cushion 8 by a predetermined amount or more. The rotation preventing means 45 includes a locked concave portion 46 formed at the upper end of the rear leg 14,
The bracket 22 of the rear upper support 16 is pivotally supported by a pivot shaft 47 so as to be reciprocally pivotable (E, F), and is removably engaged with the locked recess 46 by the forward pivot (E). And a locking arm portion 48 to be fitted. In this case, the locking arm 48 is urged by a spring (not shown) so as to make a forward rotation (E), that is, urged in a direction of engaging with the locked concave portion 46.

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

At the lower end of the front leg 13, there is provided a connecting member 53 which is an interlocking link of a metal elastic bar having a circular cross section for interlockingly connecting the lower end of the rear leg 14. This connecting tool 53
Is elastically bendable, the front end of one end is pivotally supported by the lower end of the front leg 13 by the pivot shaft 27, and the rear end of the other end is the lower end of the rear leg 14. The part is pivotally supported by another pivot shaft 55. In addition, the connecting tool 5
3 is formed by bending the vehicle body 1 so that a part 53a in the longitudinal direction projects toward a middle part in the front-rear direction of the bottom surface 6a of the seat cushion 8 of the seat body 6 in a side view of the vehicle body 1. I have. The seat cushion 8
Is made of a rigid plate material such as a resin under cover, and the lower surface of the plate material is the bottom surface 6a. Note that the front end of the connecting tool 53 may be pivotally supported by the bracket 26 of the floor panel 2 or the front lower 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 position in the front-rear movable range of the seat 4 in the “seatable posture” and is supported by the support means 7. In this case, the front leg 13 abuts on the rear rotation stopper 34, and further rearward rotation with respect to the floor panel 2 is prevented. Further, the locking portion 41 is engaged with the notch at the lowermost end of the locked portion 39 in the rotation preventing means 38, and the seat cushion 8 around the pivot shaft 23 of the front upper pivotal support 15 is The relative rotation with respect to the front leg 13 is prevented.
Further, the locked concave portion 4 in the other rotation preventing means 45 is used.
The engagement arm portion 48 is engaged with 6, and the relative rotation of the seat cushion 8 and the rear leg 14 around the pivot 24 of the rear upper pivot 16 is prevented.

Therefore, the seat body 6 is located at the last position of the seat 4 in the "seatable posture", and the rear rotation stopper 34 and the both-rotation preventing means 38, 4 of the support means 7 are provided.
5 strongly supports the floor panel 2. When the relative rotation between the seat cushion 8 and the front leg 13 is prevented by the rotation preventing means 38, the relative rotation between the seat cushion 8 and the rear leg 14 is also indirectly prevented. May be omitted.

From the last part of the seat body 6 in the "seatable posture" of the seat 4 shown by FIGS. 1 and 2 and the two-dot chain line in FIG. When the engaging portion 41 is disengaged from the locked portion 39 by returning to the back (D), the front of the seat body 6 is rotated forward by the front and rear legs 13 and 14 with respect to the floor panel 2. Movement is allowed.

Therefore, the pivot 27 of the front lower pivot 17 is provided.
And the front and rear legs 1 around the locking portion 29 of the locking device 18.
When the seat body 6 is moved forward so that the seat body 6 is positioned at the foremost position in the “seatable 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, if 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 relative rotation between the seat cushion 8 and the front leg 13 around the pivot shaft 23 of the pivot support 15 is prevented.

Therefore, the sheet main body 6 is connected to the front rotation stopper 35 and the rotation preventing means 3 of the support means 7.
8 allows the seat panel 4 to be firmly supported by the floor panel 2, whereby the seating position for the seat 4 is changed from the last site in the “seatable posture” to the front site. When the seat body 6 is located at the last position, the shape of the connecting tool 53 is in a free state.
When the seat body 6 is moved to the frontmost position, the distance between the pivot shaft 27 and the other pivot shaft 55 changes,
At this time, the connecting tool 53 is slightly elastically deformed and bent, so that the dimensional change is absorbed.

The state of the last part of the seat body 6 in the "seatable posture" of the seat 4 shown by the above-mentioned FIGS. 1 and 2 and the two-dot chain line in FIG. 3 (or the solid line shown in FIG. 3) From the state of the frontmost portion of the seat body 6 in the “seatable posture” of the seat 4), the locking portion 41
Is rotated backward (D), and the engagement of the locking portion 41 with the locked portion 39 is released, so that the front and rear legs 13 and 14 rotate forward (or backward rotate) with respect to the floor panel 2. ) Is allowed to move forward (or backward) of the seat body 6.

Therefore, the pivot shaft 27 of the front lower pivot bracket 17 is provided.
And the front and rear legs 1 around the locking portion 29 of the locking device 18.
By rotating the seats 3 and 14 forward (or backward), the seat body 6 is moved forward (or backward) so that the seat body 6 is positioned at an intermediate position in the front-rear direction in the “seatable posture” of the seat 4. The locking portion 41 of the rotation preventing means 38
Is rotated forward (C), and the locking portion 41 is engaged with the notch in the middle of the locked portion 39.
The relative rotation of the seat cushion 8 and the front leg 13 around the pivot shaft 23 of the fifth body 5 is prevented. For example, the position change of the seat body 6 is prevented at a position indicated by a dashed line in FIG. Thereby, the seating position with respect to the seat 4 is
It can be changed to a middle part in the front-rear direction in the “seatable posture”.

In the above case, when the seat body 6 is moved forward from the last position, the interlocking cable 49 slides forward in the guide tube 50, and the guide tube 50 rotates the locking arm portion 48 backward (backward rotation). F), the locking arm portion 48 separates from the locked concave portion 46, and the rotation inhibition by the other rotation inhibiting means 45 is automatically released. On the other hand, when the seat body 6 moves rearward and returns to the last position, the locking arm 48 rotates forward (E) by the urging force of a spring (not shown), and is again moved into the locked concave portion 46. Engagement, thereby automatically preventing rotation by the other rotation prevention means 45 described above.

In the above case, the front and rear legs 13 and 14 rotate 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 controlled by the first and second springs 3.
2, 33, the forward movement of the seat body 6 from the rearmost portion can be made light.

On the other hand, when the seat body 6 is to be moved rearward from an intermediate position by the rearward rotation of the front and rear legs 13, 14 with respect to the floor panel 2, the first and second springs 32, 33 are attached. Although it is necessary to oppose the force, the rearward movement of the seat body 6 is normally performed using the weight of the occupant, so that the rearward movement of the seat body 6 is lightened.

When the seat body 6 moves rearward from the halfway part toward the last part, and when this rearward movement falls backward, the urging force of the first and second springs 32, 33 is applied to the seat. In order to suppress the rearward and downward rapid movement of the main body 6, when the seat main body 6 is moved rearward, it is possible to prevent a seated person sitting on the seat body 6 from being given a feeling of falling down rearward and downward.

When the seat body 6 moves forward from the halfway part side and approaches the foremost part, the overall urging force of the first and second springs 32 and 33 applies the front legs 13 to the floor panel 2. It is set to be urged to rotate backward.

For this reason, when the seat body 6 moves forward from the halfway part toward the foremost part, and when this forward movement falls forward, the urging force of the first and second springs 32 and 33 is reduced by the above-described force. In order to suppress the rapid forward and downward movement of the seat body 6, when the seat body 6 moves forward, it is suppressed that a seated person sitting on the seat body 6 feels like falling forward and downward. .

According to the above configuration, in short, in the "seatable posture" of the seat 4, the front and rear legs 13, 1 with respect to the seat cushion 8 are operated by the operation of the rotation preventing means 38.
4 and then the front and rear legs 13, 14
Is rotated with respect to the floor panel 2 and the seat cushion 8, respectively, to change the seat body 6 to a desired position in the front-rear direction, and the rotation of the front and rear legs 13, 14 with respect to the seat cushion 8 at this position. If the rotation is prevented by the rotation preventing means 38 in 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 adjusted. It can be changed back and forth according to the physique and preference of the seated person.

As shown by the solid line in FIG. 1, when the seat back 9 is turned forward (A) from the state where the seat body 6 is located at the last position in the "seatable posture" of the seat 4, this The seat back 9 can be overlaid on the upper surface side of the seat cushion 8 (two-dot chain line in FIG. 1).

4 and 5, in the state in which the locked portion 30 of the locking device 18 is released from the locking portion 29, that is, in the state in which the rear leg 14 is released from the floor panel 2, The seat 4 in a state where the seat back 9 is overlaid on the seat cushion 8 is reciprocally rotatable upward and forward around the pivot shaft 27 of the front lower pivot support 17.

When the seat 4 is to be stored when not in use, for example, the seat back 9 is superimposed on the seat cushion 8 as described above, and the pivot shaft of the front lower pivot bracket 17 is provided. The seat 4 is rotated upward and forward around the center 27, which will be described more specifically.

The seat back 9 is attached to the seat cushion 8.
In the state in which the locking parts 18 are overlapped, the locking of the locked part 30 with the locking part 29 of the locking tool 18 is released, and the front leg 13 is pivoted about the pivot shaft 27 of the front lower pivot support 17. The seat body 6 is turned forward to a predetermined turning position, and is prevented from further turning forward by the rear turning stopper 34 (solid line in FIGS. 4 and 5). Fifteen
Is pivoted forward and upward about the pivot shaft 23 of FIG. 4 to have 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 at
The first spring 32 urges the seat body 6 to rotate forward and upward about the pivot shaft 23 of the front upper pivotal support 15, that is, the first spring 32 applies a force to the seat spring 6. The main body 6, the front legs 13, the rear legs 14, and the connecting tool 53 are urged so as to have a rhombus shape that is long in the vertical direction and small in the front-rear direction when viewed from the side of the vehicle body 1. Becomes smaller, and becomes compact.

From the above state, the seat body 6 is further rotated forward and upward about the pivot shaft 23 of the front upper pivot support 15 to a predetermined rotational position separated upward from the floor panel 2. When the seat 4 is rotated (indicated by the alternate long and short dash line in FIGS. 4 and 5), the sheet 4 is set in a diamond-shaped “storage posture” with a smaller width. As described above, when the seat 4 is set in the “storage posture”, the storage stopper 56 that prevents further rotation of the sheet body 6 in the forward and upward direction is provided. The locking portion 41 of the rotation preventing means 38 and a stopper surface 57 formed on the front leg 13 and contacting the locking portion 41. And
The sheet 4 is stored in the "storage posture" (dotted line in FIGS. 4 and 5).

In the above case, when the seat 4 is turned forward and upward about the front lower pivot 17, the forward and upward rotation of the seat 4 is promoted by the urging of the second spring 33.
Therefore, the work of storing the seat 4 can be performed lightly and easily.

In FIGS. 4 and 5, when the seat 4 is rotated forward and upward about the front lower support 17, the rotation preventing means 38 is interlocked with the forward and upward rotation. , A rotation prevention release mechanism 58 for automatically releasing the rotation prevention state of the front leg 13 is provided.

The rotation inhibition release mechanism 58 includes a release arm 60 pivotally supported on 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.

Then, when the seat body 6 is rotated forward and upward about the front lower pivot 17 from the state where the seat body 6 is located at the last position in the "seatable posture" of the seat 4. The rotation of the release arm 60 is controlled by a link 61 connecting the release arm 60 to the bracket 26 of the front lower support 17, and the release arm 60 is engaged with the locked portion 39. The engaged locking portion 41 is forcibly rotated backward (D) to release the engagement, that is, the rotation preventing state of the front leg 13 by the rotation preventing means 38 is set. Canceled automatically. At this time, as described above, the state in which the rotation of the rear leg 14 is prevented by the other rotation preventing means 45 is also determined by the interlocking cable
And the guide tube 50. Then
As described above, the urging force of the first spring 32 causes the seat 4 to have a rhombic shape and be compact.

According to the above configuration, the pivot shaft 2 of the front lower pivot bracket 17 attempts to change from the “seatable posture” of the seat 4 to the “storage posture” for accommodating the seat 4.
When the front leg 13 is pivoted forward and upward about the center 7, the rotation inhibition state of the front leg 13 by the rotation inhibition means 38 is automatically released, and thereafter, the posture is such that the seat 13 can be seated. With the help of the urging forces of the first and second springs 32 and 33, the seat 4 can be formed into a compact shape in the front-rear direction, such as a vertically long rhombus, and its storage space can be reduced.

As described above, when the seat 4 is made to be in the compact "storage posture", since the operation to the rotation preventing means 38 is unnecessary, the seat 4 is made to be in the "storage posture". Work becomes easier.

As described above, the front leg 13 is rotated to the predetermined rotation position about the pivot shaft 27 of the front lower pivot support 17 (solid line in FIGS. 4 and 5), and the seat body 6 is rotated. Is pivoted forward and upward about the pivot shaft 23 of the front upper pivotal support 15 to a predetermined pivot position, so that the seat 4 is in the “storage posture”.
(Indicated by the alternate long and short dash line in FIGS. 4 and 5), the front leg 13 and the seat body 6 are prevented from further turning forward, and are also prevented from turning backward therefrom. In order to maintain the “storage posture” of No. 4, locking means 65 for locking the seat cushion 8 to the floor panel 2 so as to be detachable is provided.

The locking means 65 prevents the further forward rotation when the front leg 13 rotates to a predetermined rotation position around the pivot shaft 27 of the front lower pivot support 17. When the movement stopper 35 and the seat body 6 rotate forward and upward to a predetermined rotation position around the pivot shaft 23 of the front upper pivotal support 15, further forward and upward rotation is prevented. The storage stopper 56 is provided.

The locking means 65 is connected to the front leg 13.
Is pivotally supported by the floor panel 2 via the bracket 26 by the pivot shaft 66 so that the upper portion thereof is rotatable in the front-rear direction so that the upper portion thereof is rotatable in the front-rear direction. Arm 67 and the rotating arm 6
A spring 68 for urging the rotation arm 7 forward; a stopper means 69 for preventing further rotation when the rotation arm 67 is rotated forward to a predetermined rotation position; A notch-shaped engaging portion 72 provided integrally with the rotating end of the seat 4; and the engaging portion 72 fixed to the seat cushion 8 and capable of engaging and disengaging from the engaging portion 72 when the seat 4 is in the "storage posture". And a shaft-shaped locked portion 73 locked to the shaft.

In the above case, the pivot 23 of the front upper pivot 15
The locked portion 73 is engaged immediately before the locked portion 73 that rotates with the rotation of the seat body 6 in the front and upper direction around the locking portion 72 is about to be locked. While sliding against the upper end surface of the stopping portion 72 while being pressed against it, the turning arm 67 is once turned back together with the locking portion 72 while resisting the urging force of the spring 68 (indicated by a dashed 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 locking portion 72 has a notch shape, and when the locked portion 73 is locked to the locking portion 72,
Rotation of the seat body 6 back and forth about the pivot 23 of the front upper pivot 15 is firmly prevented without rattling. As a result, the seat 4 is in the "storage posture".
Is held.

In the above case, the stopper 56 for storage may not be necessary due to the presence of the locking portion 72 and the locked portion 73. Conversely, the storage stopper 56 may be left, and the locking portion 72 may have a simple hook shape.

In particular, referring to FIG. 4, when the seat 4 is in the "storage posture" as described above, a part 53a of the connecting member 53 in the longitudinal direction is a part of the seat cushion 8 of the seat body 6. The rear leg 14 is pressed against a certain bottom surface so that further forward rotation of the rear leg 14 around the rear upper support 16 is prevented.

Therefore, as described above, when the front leg 13 and the seat body 6 are respectively turned to the predetermined turning positions in order to bring the seat 4 into the "storage posture", the seat 4 is connected to the front leg 13. Rear leg 14 interlocking via the tool 53
Is prevented from rotating forward unnecessarily around the rear upper support 16 at a predetermined rotation position (FIG. 4).
The position of the seat 4 is limited to the position indicated by the dashed line in FIG.

Therefore, when the front leg 13 and the seat body 6 are thereafter rotated in the opposite direction to return the seat 4 to the “seatable posture”, the connecting member 53 is attached to the front leg 13.
The rear legs 14 are smoothly interlocked with each other, that is, when the posture of the seat 4 is changed from the "storage posture" to the "seatable posture", the work of this change can be performed smoothly without fail. Becomes

The connecting member 53 is formed of a bar whose one end is pivotally supported by the lower end of the front leg 13 and the other end is pivotally supported by the lower end of the rear leg 14. Is formed so that a part 53a in a longitudinal direction of the connecting member 53 is formed into a substantially U-shape protruding so as to be curved toward the bottom surface 6a of the seat body 6, and when the seat 4 is in the storage posture, A portion 53a is brought into pressure contact with a bottom surface 6a which is a part of the seat body 6.

For this reason, when the seat 4 is brought into the "storage posture", the connecting tool 53 is moved to the seat 4 in the "storage posture".
In this “storage posture”, the connecting tool 53 extends in the up-down direction, and a part 5
The vehicle body 1 protrudes so that the body 3a curves forward.

Therefore, the space inside the connecting tool 53 is
The space of the passenger compartment 3 behind the seat 4 in the "storage posture" is widened, which is beneficial for riding and work.

In the above case, since the connecting tool 53 is formed of a bar, smoothing the above-described posture changing operation can be achieved with a simple configuration. Further, since the bottom surface 6a of the seat cushion 8 of the seat body 6 which presses the part 53a of the connecting member 53 is formed of a rigid plate material, even if the part 53a is pressed against the bottom surface 6a, The deformation of the bottom surface 6a is prevented, and the positioning of the rear leg 14 at the predetermined rotation position is more accurately performed.

In the "storage posture" of the seat 4, 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, so that the front leg 13 and the rear leg 14 are provided. , And each pivot point of the connecting tool 53 for interlocking and linking them is prevented from rattling. Further, although the connecting tool 53 is long, it is also possible to prevent the middle part of the connecting tool 53 from shaking. The generation of sound is prevented.

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

According to the above configuration, since the portion 53a of the connecting member 53 is elastically pressed against the bottom surface 6a of the seat cushion 8, first of all, a noise rubs against the pressed portion due to the vibration of the vehicle during running. Is prevented from occurring. Secondly, the plate material on the bottom surface 6a of the seat cushion 8 is prevented from being worn and damaged. Third, a dimensional error occurring between each component such as the connector 53 of the seat 4 is absorbed by the elastic deformation of the elastic body in addition to the elastic deformation of the connector 53, and therefore, each component is Since high dimensional accuracy is not required, the molding is facilitated.

In FIGS. 2, 5, and 6, the locked 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 operation force G from the outside. Is provided, and the release of the lock releases the holding of the “storage posture”.

The lock release operation means 75 includes one end 77
Is connected to a longitudinally intermediate portion of the rotating arm 67,
The other end 78 protrudes rearward from the rotating arm 67, and the other end 78 is provided with a flexible tension member 79 which is a grip portion of the operator and serves as an input portion of the operation force G. . If the other end 78 of the pulling body 79 is gripped and the operation force G is input and pulled backward to move backward, the rotating arm 67 rotates backward in conjunction with this and the locking The locking 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 narrow ring shape in the front-rear direction in plan view, and includes left and right side pieces 79a, 79a approaching each other in the vehicle width direction. I have. The connecting tool 5 is located behind the rotating arm 67 and substantially at the same position as the rotating arm 67 in the vehicle width direction.
3, a middle part in the longitudinal direction is provided, and a middle part of the connecting tool 53 is penetrated between the left and right pieces 79a, 79a in the middle part in the longitudinal direction of the tension body 79. Also,
Left and right pieces 79a, 79a of the other end 78 of the tension body 79
Are sewn to each other to provide a sewn portion 80, so that the sewn portion 80 and the end on the other end portion 78 side of the sewn portion 80 can be easily gripped. The sewn portion 80 may not be provided.

According to the above configuration, in particular, in FIGS. 4 to 6, the front leg 13 is rotated forward to a predetermined rotation position around the front lower pivot support 17 and the seat back 9 is Is rotated forward and upward around the front pivotal support 15 to a predetermined rotational position separated upward from the floor panel 2, that is, the seat 4 is stored When the posture is set, the locking means 65 for automatically locking the seat cushion 8 to the floor panel 2 so that the seat cushion 8 can be freely detached is provided.

That is, the seat 4 is held in the “storage posture” by the locking of the seat cushion 8 by the locking means 65 described above, and in this case, the seat body 6 moves upward from the floor panel 2 as described above. Because it is located at a distance, the distance from the floor panel 2
The front leg 13 can be made to be in a vertical position closer to vertical.

Therefore, the seat 4 including the front legs 13
Can be vertically elongated as a whole, the seat 4 can be made to have a compact "storage posture" in the front-rear direction, and thus the seat 4 can be made compact. Can be spread.

Further, as described above, the front leg 13 and the seat body 6 are turned to the predetermined turning position,
The seat cushion 8 of the seat body 6 is attached to the floor panel 2 when the seat 4 including
There is provided a locking means 65 for automatically and detachably locking the seat 4, whereby the seat 4 can be held in the “storage posture”.

Therefore, since the holding of the sheet 4 in the "storage position" is automatically achieved by the single locking means 65, it is necessary to hold the sheet 4 in the "storage position". Is achieved with a simple configuration, and
The operation on the sheet 4 at the time of holding in this manner can be easily performed.

On the other hand, the operation for releasing the holding state of the "storage posture" is performed by simply pulling the tension member 79 and moving it backward.
In other words, the operation for the seat 4 can be easily performed when the holding of the above-mentioned “storage posture” is released by a simple operation for the seat 4.

In FIGS. 5 and 6, in order to release the locking of the locked portion 73 by the locking portion 72, the other end portion 78 of the tension member 79 is gripped and pulled rearward to be moved rearward. When the rotating arm 67 is rotated backward about the pivot shaft 66 so as to interlock with this, an excessive force is not generated around the pivot shaft 66 so that the tension can be smoothly performed. In order to perform this operation, the moving direction of the other end 78 of the pulling body 79 in the plan view of the vehicle body 1 is changed to the turning direction of the turning arm 67 about the pivot shaft 66 (the diameter of the pivot shaft 66). Direction (solid line in FIG. 6).

Here, as described above, since the middle part of the connecting member 53 is penetrated between the left and right side pieces 79a, 79a of the tension body 79, the other end 78 of the tension body 79 is temporarily provided. 6 is pulled in a direction inclined with respect to the rotation direction of the rotation arm 67 (two-dot chain line in FIG. 6), but the middle part in the longitudinal direction of the tension body 79 slides with respect to the coupling tool 53. The one end 77 is guided so as to be pulled substantially in the same direction as the rotation direction of the rotation arm 67.

Therefore, in attempting to smoothly rotate the rotary arm 67, it is suppressed that a strict restriction is imposed on the pulling direction of the other end 78 of the pulling body 79, and accordingly, Operation of the seat 4 for releasing the locking, that is, releasing the holding of the “storage posture” can be easily performed.

Further, since the connecting member 53 has a circular cross section, the sliding when the tension body 79 is guided by the connecting member 53 is smoothly performed, and therefore, the release of the holding of the "storage posture" is achieved. Operation for the seat 4 is further facilitated. Further, this simplification of the operation is achieved by using the above-mentioned connecting tool 53, that is, achieved by a simple configuration.

When the holding of the “storage posture” is released as described above, the seat 4 is moved from the “storage posture”.
Is allowed to rotate backward and downward. Therefore, the above sheet 4
Is pivoted rearward and downward, the release arm 60 allows the engagement of the locking portion 41 with the locked portion 39 on the way, and this engagement and the further rearward and downward movement of the seat 4 are performed. By the rotation of, the seating position can be set.

In the above case, when the lower end portion of the rear leg 14 which rotates with the rearward and downward rotation of the seat 4 is to be locked to the floor panel 2 by the locking member 18, The lower end of the rear leg 14 is positioned at a predetermined position with respect to the locking member 18 by the connecting member 53 that links the lower end of the rear leg 14 to the lower end of the front leg 13. The locked portion 30 is securely engaged with the locking portion 29 so as to be freely detachable, and the seat 4 is returned to the “seatable posture”.

In FIGS. 2, 5, and 6, an interlocking body 84 is provided on the front leg 13 to interlock and connect the rotating arm 67. This interlocking body 84 includes a link 85 that extends long in the front-rear direction. One end (front end) of the link 85 is formed with a long hole 86 extending in the longitudinal direction. The long hole 86 and an engaging pin 87 attached to the upper part of the rotating arm 67 slide back and forth. It is engaged so as to be free. The other end (rear end) of the link 85
Is pivotally supported on the upper part of the front leg 13 by a pivot 88.

In the “storage posture” of the seat 4, the engaging pin 87, which has been rotated forward together with the rotating arm 67 by the bias of the spring 68, comes into contact with the front edge of the elongated hole 86, and Further forward rotation of the arm 67 is prevented (solid line in FIG. 5). For this reason, as the interlocking body 84 constitutes the stopper means 69, the stopper means 69 in the drawing may not be provided.

On the other hand, as described above, when the tension member 79 is pulled to rotate the rotating arm 67 backward to release the locking of the locked portion 73 by the locking portion 72, the rotation The engagement pin 87 that rotates rearward with the arm 67 slides rearward through the long hole 86 to allow the release of the lock (two-dot chain line in FIG. 5).

According to the above configuration, the locking means 65 protrudes upward from the floor panel 2 near the front of the front leg 13 and has a lower end portion which is rotatable in the front-rear direction. A pivot arm 67 pivotally supported by the floor panel 2, a locking portion 72 provided at a rotation end of the rotation arm 67, and a locking portion 72 provided on the seat cushion 8 so as to be freely detachable from the locking portion 72. A locked part 73 to be locked is provided, and an interlocking body 84 for interlockingly connecting the rotating arm 67 to the front leg 13 is provided.

Therefore, when the front leg 13 is rotated in the front-rear direction, for example, when the seating position on the seat body 6 is changed, the rotating arm 67 is moved by the interlocking body 84 to move the front leg 13. It rotates together with the front leg 13 in the vicinity.

Therefore, the pivot arm 67, which is a part of the components of the locking means 65, is capable of moving the seat 4 in any of the "seatable posture" and the "storage posture". It is suppressed that the sheet 4 largely protrudes outward from the seat body 6 and the support means 7, and the seat 4 is 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, there is provided a seat body in which the seat is located above the floor panel of the vehicle body, and support means for supporting the seat body on the floor panel, wherein the support means comprises the seat Before extending downward from the lower surface side of the main body, before and after the rear legs, and before and after pivoting the upper ends of the front and rear legs to the seat body so that the front and rear legs can be rotated back and forth, A front and lower pivotal support for pivotally supporting the lower end of the front leg to the floor panel so that the front leg can be rotated back and forth, and a lower end of the rear leg is detachably engaged with the floor panel. A locking device for pivotally supporting the rear leg so that the rear leg is rotatable back and forth in the locked state; and a connecting device for connecting a lower end of the rear leg to a lower end of the front leg. The position and posture of the vehicle seat

The front leg is pivoted forward to a predetermined pivot position around the front lower pivot support, and the locking by the latch is released to allow the seat body to pivot about the front upper pivot. When the seat is turned to the "storage posture" by rotating the seat forward and upward to a predetermined turning position, a part of the connecting member is pressed against a part of the seat body, and the rear upper pivoting member is moved. Further rotation of the rear leg about the center is prevented.

For this reason, as described above, when the front leg and the seat body are respectively turned to the predetermined turning position in order to bring the seat into the "storage posture", the front leg is interlocked with the front leg via the connecting member. The unnecessary rear legs are prevented from being unnecessarily rotated forward around the rear upper pivotal support, and the rear legs are kept at the predetermined rotation position and positioned, so that the seat is in the "storage posture".

Therefore, when the front leg and the seat body are thereafter rotated in the opposite direction to return the seat to a "seatable posture" in which the seat can be normally seated, the front leg is connected to the seat via the connecting member. The above hind legs will smoothly interlock,
In other words, when the posture of the seat is changed from the "storage posture" to the "seatable posture", the change can be made smoothly without fail.

According to a second aspect of the present invention, the connecting member is constituted by a rod material 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. A part in the longitudinal direction of the component is formed to have a substantially V-shape protruding toward the bottom surface of the sheet body, and when the sheet is in the “storage posture”, a part of the connecting component is formed in the sheet. It comes into contact with the bottom of the main body.

For this reason, when the sheet is brought into the "storage position", the connecting member is located at the rear of the sheet in the "storage position", but the connecting device in this "storage position" extends vertically. Thus, a halfway portion of the vehicle body projecting forward has a substantially U shape in a side view.

Therefore, the space inside the cabin behind the seat in the "storage posture" is widened by the space inside the connecting member, which is beneficial for riding and work.

Further, in the "storage posture" of the seat, since a part of the connecting member is pressed against the seat cushion of the seat body, the front legs, the rear legs, and the pivot points of the connecting member for connecting the connecting members in an interlocking manner. The rattling is prevented, and although the above-mentioned connecting tool is long, it is possible to prevent the middle part of the connecting tool from rattling, thereby preventing generation of abnormal noise.

[Brief description of the drawings]

FIG. 1 is an overall side view of a seat when a seat body is at a rearmost position in a “seatable 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 “seatable posture” of a seat.

FIG. 4 is a diagram illustrating an operation when a sheet is stored.
FIG.

FIG. 5 is a partially enlarged view of FIG. 4;

FIG. 6 is a sectional view taken along line 6-6 of FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 2 Floor panel 3 Cab 4 Seat 6 Seat body 6a Bottom (part) 7 Support means 13 Front leg 14 Rear leg 15 Front upper support 16 Rear upper support 17 Front lower support 18 Locking device 53 Connector 53a part

Claims (2)

[Claims] 1. A seat body having a seat positioned above a floor panel of a vehicle body, and support means for supporting the seat body on the floor panel, wherein the support means extends downward from a lower surface of the seat body. Before extending the front leg, the rear leg, and before and after pivoting the upper ends of the front and rear legs to the seat body so that the front and rear legs can be rotated back and forth, A front lower pivotal support for pivotally supporting the lower end of the rear panel to the floor panel so as to be rotatable; and a lower end of the rear leg being detachably engaged with the floor panel. A position of a vehicle seat comprising: a locking device for pivotally supporting the rear panel so that the rear leg can be rotated back and forth; and a connecting device for connecting a lower end of the rear leg to a lower end of the front leg. In the posture changing device, the front leg is connected to the front lower pivot. The seat body is pivoted forward to a predetermined pivot position, and the seat body is pivoted forward and upward to a predetermined pivot position around the front upper pivotal support by releasing the locking by the locking device. When the seat is in the storage position, a part of the connecting member is pressed against a part of the seat body to further rotate the rear leg about the rear upper support. A device for varying the position and attitude of a vehicle seat that is to be blocked. 2. The connecting member is formed of a bar 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, and is provided in the longitudinal direction of the coupling. A part is formed so as to have a substantially U-shape protruding toward the bottom surface of the seat body, and when the sheet is placed in the storage posture, a part of the coupling tool is pressed against the bottom surface of the sheet body. The apparatus for varying the position and attitude of an automobile seat according to claim 1.