JP3517136B2 - Car seat support device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for supporting a vehicle seat. 2. Description of the Related Art Conventionally, automobile seats have been disclosed in Japanese Unexamined Patent Publication No.
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 a support device for supporting the seat body on the floor panel, and the seat is in a seatable posture. It has been. In the above construction, recently, before and after the support device extends downward from the lower surface side of the seat body, each of the rear legs, and each of the front and rear legs so as to be rotatable back and forth. Before and after pivoting the upper end to the seat body, a rear upper pivot, a front lower pivot to pivot the lower end to the floor panel so that the front leg can be rotated back and forth, and A locking member for locking a lower end of the leg to the floor panel so as to be freely detachable and locking the rear leg to the floor panel so as to be rotatable back and forth in the locked state; By allowing the seat body to move back and forth with the back and forth rotation of the rear legs, and by releasing the locking state of the locking member,
There has been proposed a seat in which the seat is rotatable forward and upward around the front lower support. In the seat having the above-described structure, if the seat body is moved in the front-rear direction to prevent the rotation of the front and rear legs at a desired portion so as to be releasable, the seat can fit the physique and taste of the seated person. The seating position on the seat can be changed back and forth. When the locking device is unlocked and the seat is turned forward and upward around the front lower pivot support to a predetermined turning position, the seat is compact and vertically long in the front-rear direction. It is assumed that the seat is in the stowed posture, whereby the riding space and the working space of the passenger compartment behind the seat are widened. [0007] In the above-described conventional technique, the lower end of the rear leg is only locked by the locking member with respect to the floor panel. There is a possibility that the supporting strength of the lower end portion of the rear leg is insufficient, causing inconvenience such as rattling during running of the vehicle. Therefore, it is conceivable to more firmly hold the locked state of the locking tool. However, if this is done simply, the operation for releasing the locked state of the locking tool becomes complicated. That is, there is a possibility that the operation for bringing the sheet into the storage position becomes complicated. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances. Before the seat body is pivoted back and forth with respect to the floor panel, the seat body is pivotally supported by a rear leg. It is another object of the present invention to provide a structure in which, when the lower end of the floor panel is detachably locked by a locking member, the seat is more firmly supported on the floor panel. It is another object of the present invention to easily perform an operation for rotating a sheet forward and upward to a storage position even in the case described above. [0011] In order to solve the above-mentioned problems, the present invention provides an apparatus for supporting a vehicle seat, wherein the seat 4 comprises:
Seat body 6 located above floor panel 2 of vehicle body 1
Before extending downward from the lower surface side of the seat body 6, the rear legs 13, 14, and the upper ends of the rear legs 13, 14 so that the front and rear legs 13, 14 can be rotated back and forth. Before pivoting to the main body 6, rear upper pivoting supports 15, 16, and a front lower pivoting support 17 for pivotally supporting the lower end of the front leg 13 to the floor panel 2 so that the front leg 13 can rotate back and forth. A locking tool that locks the lower end of the rear leg 14 to the floor panel 2 so as to be freely detachable and engages with the floor panel 2 so that the rear leg 14 can rotate back and forth in this locked state. 1
8, the seat body 6 can be moved back and forth with the front and rear legs 13 and 14 rotating back and forth, and the seat 4 is released by releasing the locking state of the locking member 18. In a vehicle seat apparatus which is rotatable forward and upward around a front lower pivot 17, the vehicle is linked to the seat 4 to lock the locking member 18 in its locked state. only when the seat body 6 is in a predetermined portion of the front-rear direction, provided with a locking means 41 for releasing the lock, the locking device 18, the upper
The striker 28 protruding from the floor panel 2
The striker 28 is formed at the lower end of the rear leg 14 and
A locking groove 29 which is removably fitted from above the rear leg,
14 is rotatably supported by the lower end thereof, and the rotation
The lower end opening of the stop groove 29 is closed and the locking groove 29
A locking hook for releasably holding the fitted state with the squid 28
33 and the lower end of the rear leg 14 pivotably supported by the
The lever is pivotally engaged with the locking hook 33 so as to be detachably engaged.
An engagement hook 35 for preventing rotation of the locking hook 33;
The locking means 41 is pivotally attached to the rear leg 14.
Arm 43 pivotally supported by the
Link 43 for linking 43 to the seat body 6
4 and the lock arm 43 is provided with the locking groove 29.
By maintaining the fitted state of the
Engagement hook 35 of the locking tool 18 in the stopped state
And prevents the rotation of the engagement hook 35.
On the other hand, the seat body 6 is a predetermined portion in the front-rear direction.
At this time, the seat body 6 is
The lock arm 43 operates in conjunction with the lock arm 43.
Is the engagement of the engagement hook 35 with the engagement hook 33.
From the rotation locus of the engagement hook 35 sufficient to release
It is designed to be removed . Embodiments of the present invention will be described below with reference to the drawings. In the drawings, 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 a support device 7 for supporting the seat body 6 on the floor panel 2. The seat body 6 is connected to 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 attached to a rear end of the seat cushion 8. Pivot means 1 to pivot
0, and the seat back 9 is reciprocally rotatable around the pivot means 10 toward the lower front. Although not shown, a reclining means is provided for enabling the seat back 9 to be prevented from turning at an arbitrary turning position. The seat 4 shown by the solid line and the dashed line in FIGS. 1 to 3 is in a posture in which a occupant can sit down, that is, the seat cushion 8 of the seat body 6 can be seated by the occupant. The seat back 9 is in a posture in which the seat back 9 can be rested while sitting on the seat cushion 8. The support device 7 includes 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 when the seat body 6 is in a position where the seat body 6 can be seated. A pair of left and right sheet metal rear legs 14 extending downward from the lower surface side of the rear portion of the cushion 8.
Before pivoting the upper ends of the front and rear legs 13, 14 back and forth to the seat cushion 8, the rear upper pivotal supports 15, 16 and the front legs 13 are moved back and forth. A front lower pivotal support 17 for pivotally supporting the lower end of the rear panel 14 to the floor panel 2 so as to be rotatable; and a lower end of the rear leg 14 is detachably engaged with the floor panel 2;
A locking device 18 is provided for pivotally supporting the rear leg 14 on the floor panel 2 so that the rear leg 14 can be rotated back and forth in this locked state. In the above case, the seat body 6 can be moved back and forth (A, B) with respect to the floor panel 2 with the front and rear rotation of the front and rear legs 13 and 14 described above. in this case,
A front rotation stopper (not shown) for preventing the seat body 6 from moving forward by a predetermined amount or more is provided, and when the seat body 6 is blocked in this way, the seat body 6 is located at the forefront position (indicated by the alternate long and short dash line in FIG. 1). , FIG. 3). On the other hand, a rear rotation stopper 20 for preventing the seat body 6 from moving backward more than a predetermined amount is provided. When the rear rotation stopper 20 is thus stopped, the seat body 6 is located at the last position (FIG. 1 solid line, FIG. 2). By the front and rear rotation of the front and rear legs 13 and 14, the seat body 6 is set to a desired portion in the front and rear movable range from the foremost portion to the last portion of the seat body 6. If the rotation of the rear legs 13 and 14 is releasably blocked by a rotation blocking means (not shown), a seating position that matches the physique and preference of the seated person with respect to the seat 4 can be obtained. On the other hand, when the locking state of the locking member 18 is released, the seat 4 is rotatable forward and upward (C) around the front lower pivot support 17 (FIG. 1). Middle two-dot chain line, FIG. 4). When the seat 4 is rotated upward and forward to a predetermined rotation position, the seat 4 is in a compact vertically long storage position in the front-rear direction. The rear upper support 16 is a bracket 21 fixed to the seat cushion 8 so as to protrude from the lower surface of the seat cushion 8, and a pivot supporting the upper end of the rear leg 14 to the bracket 21. And a shaft 22. The locking member 18 is located below the rear portion of the seat body 6 and protrudes from the floor panel 2, and is formed at the lower end of the rear leg 14 so as to be viewed from the side of the floor panel 2. The striker 28 has an inverted U-shape, and has an upper portion of the striker 28 and a locking groove 29 which is removably fitted from above. The upper part of the striker 28 has a shaft axis extending in the vehicle width direction, and a pivot shaft 30 for pivotally supporting the rear leg 14 in a forward and backward direction in a state where the locking groove 29 is fitted.
It has been. The locking member 18 is pivotally supported at the lower end of the rear leg 14 by a pivot shaft 32 so as to be able to rotate back and forth, and closes the lower end opening of the locking groove 29 by rotating backward. A locking hook 33 for releasably holding the engagement between the locking groove 29 and the pivot shaft 30, and a pivot shaft 3 at the lower end of the rear leg 14.
An engagement hook 35 pivotally supported back and forth by 4 to engage and disengage with the locking hook 33 by its forward rotation to prevent the locking hook 33 from rotating forward; It has. Further, a spring (not shown) is provided for urging the engagement hook 35 to rotate forward (D) so as to be engaged with the engagement hook 33. The locking member 18 is provided with the pivot shaft 34.
And a rotation arm 37 interlocking with the engagement hook 35 through the arm, and an unlocking operation portion 38 made of a belt protruding rearward from the rotation arm 37. In the state shown in FIGS. 1 and 2, the locking member 18 is in a locked state in which the lower end of the rear leg 14 is locked to the floor panel 2. As described above, the front and rear legs 13, 14 are both rotatable back and forth. As shown by a dashed line in FIG. 2, when the operation portion 38 is gripped and pulled backward, the engagement hook 35 is connected to the rotation arm 37 and the pivot shaft 34.
In conjunction with each other, the engagement hook 3
5 is released, that is, the locking state of the locking tool 18 is released. From the state in which the locking device 18 is released, the seat 4 is moved forward and upward about the front lower pivot 17 as shown by the two-dot chain line in FIG. 1 and FIG. When rotated (C), as shown in FIG.
3 is pushed forward by the pivot shaft 30 of the striker 28, and opens downward at the lower end opening of the locking groove 29. The lower end of the rear leg 14 is pivotally connected to the pivot shaft of the striker 28. 30 from above. In this case, the locking hook 33 is held in a posture in which the lower end opening of the locking groove 29 is kept open by the urging force of a spring (not shown). Also, at this time, when the operation portion 38 is released from the pulling operation force, the engagement hook 35 is rotated forward (D) by the urging force of the spring and abuts on a part of the locking hook 33. It is held in that position. When the seat 4 is further rotated forward and upward in this state, the seat 4 assumes the above-described storage posture. From the storage position of the seat 4, the seat 4 is rotated rearward and downward (in a direction opposite to C) in a direction opposite to the rotating direction along a trajectory in which the seat 4 is rotated upward and forward. When the locking groove 29 at the lower end of the rear leg 14 is fitted to the pivot shaft 30 of the striker 28 from the position shown in FIG. 4, the locking hook 33 is pushed by the pivot shaft 30 and At this time, the engaging hook 35 is automatically engaged with the locking hook 33 by the urging force of the spring, and the locking member 18 is in the original locked state shown by a solid line in FIGS. Return to In FIGS. 1 to 3, the seat body 6 of the seat 4 and the rear leg 14 are operatively connected to each other to automatically lock the locking member 18 in its locked state (FIG. 3). A lock means 41 is provided for automatically releasing the lock only when the seat body 6 is at a substantially last position (solid line in FIGS. 1 and 2) which is a predetermined position in the front-back direction. The lock means 41 includes a lock arm 43 pivotally supported on a lower end of the rear leg 14 by a pivot shaft 42 so as to be rotatable up and down. The lock arm 43 is connected to the seat body via the bracket 21. And an interlocking link 44 interlockingly connected to the seat cushion 8 of No. 6. As shown by the alternate long and short dash line in FIG. 1 and FIG.
When the seat body 6 of the seat 4 moves substantially forward of the last part, the lock arm 43 is interlocked with the seat body 6 via the interlocking link 44, and the rotation end of the lock arm 43 is locked. The engagement hook 35 is positioned near the rear end face of the engagement hook 35 in the state, and prevents the engagement hook 35 from rotating backward. Automatically locked to keep it as is. As shown by the solid line in FIGS. 1 and 2, when the seat body 6 of the seat 4 is almost at the rearmost position, the lock arm 43 is interlocked with the seat body 6 via the interlocking link 44. rotating end portion of the lock arm 43 are brought into disengaged from the rotation locus of the engagement hook 35 sufficient to disengage <br/> the engagement hook 35 with respect to the locking hook 33, have been, and the Thus, the lock of the locking state of the locking member 18 is automatically released. According to the above configuration, the locking member 18 is interlocked with the seat 4 to lock the locking member 18 in its locked state,
A lock means 41 for releasing the lock is provided only when the seat body 6 is at a predetermined position in the front-rear direction. Therefore, the locking state of the lower end of the rear leg 14 with respect to the floor panel 2 by the locking member 18 is the same as that of the locking means 41 except when the seat body 6 is set at a predetermined position in the front-rear direction. The locking operation of the above will enhance the overall performance. Accordingly, the support of the seat 4 on the floor panel 2 is made stronger as a whole. Further, as described above, when the seat body 6 is positioned at a predetermined position, the lock by the locking means 41 is automatically released, so that the locked state by the locking member 18 is released. When the seat 4 is to be placed in the storage position, first, the seat body 6 is positioned at the predetermined position, and then the locking member 18 is released from the locked state, whereby the floor panel 2 is released. , The lower end of the rear leg 14 can be detached, so that the seat 4 can be rotated forward and upward around the front lower pivot 17. Therefore, when the seat 4 is to be placed in the storage position, the seat body 6 is set at a predetermined position, so that the operation to the locking means 41 becomes unnecessary. Can be easily performed. As described above, the predetermined portion of the seat body 6 to be unlocked by the locking means 41 is the last portion in the front and rear movable range of the seat body 6. Here, the occupant of a general body shape is seated on the seat body 6 which is located substantially forward of the last part during normal running, so that the locking member 18 during normal running is used. Is always locked in the locked state by the locking means 41, so that the support of the seat 4 on the floor panel 2 becomes stronger as a whole. In addition, the positioning of the seat body 6 at the last position can be easily performed by the rear rotation stopper 20, that is, the lock by the locking means 41 can be easily released. This operation can be performed very easily. According to the present invention, the seat body is located above the floor panel of the vehicle body, and the rear legs before and after the seat body extends downward from the lower surface side of the seat body. Before pivoting the upper ends of the front and rear legs back and forth to the seat body, the rear upper pivotal support, and the lower end of the front legs to pivot the front legs forward and backward. A front lower pivot supporting the floor panel and a lower end of the rear leg are removably locked to the floor panel, and the rear leg is rotatable back and forth in this locked state. A locking device pivotally supported by the floor panel, the front and the rear legs are made to move back and forth with the front and rear rotation, and the locking device is released from the locked state to release the seat. The seat can be turned upward and forward around the front lower support. In the seat apparatus for an automobile, the locking device is interlocked with the seat to lock the locking member in the locked state, and the lock is released only when the seat body is at a predetermined position in the front-rear direction. A locking means, wherein the locking member is attached to the floor panel.
A striker to be protruded and formed at the lower end of the rear leg
To engage with the striker from above.
A stop groove and a lower end of the rear leg rotatably pivotally supported.
Rotation closes the lower end opening of the locking groove and closes the locking groove with the switch.
Locking hook that retains the state of engagement with the
And pivotally supported by the lower end of the rear leg,
The engagement hook is detachably engaged with the engagement hook to move the engagement hook.
And an engaging hook for preventing rotation of the lock.
A lock arm in which a step is pivotally supported by the rear leg.
And the lock arm is linked to the seat body
An interlocking link, wherein the lock arm is
Locked by maintaining the fitting state of the groove and striker
In the vicinity of the engagement hook of the above-mentioned locking tool in the state.
To prevent the engagement hook from rotating,
When the main body is set at a predetermined position in the front-rear direction, this seat
The lock arm interlocks with the main unit via the interlock link
The locking arm is engaged with the locking hook.
A pivoting rail of this engagement hook sufficient to disengage the hook
It is designed to be separated from the trace . Therefore, as described above, the lock arm
Can maintain the fitting state between the locking groove and the striker.
The engaging hook of the above-mentioned locking device locked by the
Block near the hook to prevent the rotation of this hook.
As a result, the locking state of the locking tool is maintained as it is.
Automatically, that is, the locking means
Since the locking operation is performed, the locking state of the lower end portion of the rear leg with respect to the floor panel by the locking device is entirely controlled by the locking operation of the locking means, except when the seat body is set at a predetermined position in the front-rear direction. Will be strengthened. Therefore, the support of the seat on the floor panel is made stronger as a whole. Further, as described above, when the seat body is positioned at a predetermined position , the above-mentioned interlocking link is attached to the seat body.
The lock arm is linked via the
Release the engagement of the engagement hook with the locking hook.
Enough to be disengaged from the rotation locus of this engagement hook.
The lock of the locking device is automatically released.
In other words, since the lock by the locking means is automatically released, when the locking state by the locking device is released and the sheet is to be stored, first, the sheet body is moved to the predetermined position. Then, if the operation of releasing the locked state is performed with respect to the locking tool, the lower end of the rear leg can be detached from the floor panel, and thus the front lower pivotal support is centered. The seat can be turned forward and upward. Therefore, when the seat is to be placed in the storage position, the operation of the locking means is not required by setting the sheet body to a predetermined position, so that the operation for bringing the sheet into the storage position is not required. It can be done easily.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a seat. FIG. 2 is a partially enlarged view of FIG. FIG. 3 is an operation explanatory view corresponding to FIG. 2; FIG. 4 is another operation explanatory view corresponding to FIG. 2; [Reference Numerals] 1 vehicle body 2 floor panel 4 sheet 6 sheet body 7 supporting device 13 before lower front leg 14 after the legs 17 pivot支具18 locking member 20 after rotation stopper 28 striker 29 engaging groove 30 pivot 33 engaging Stop hook 35 Engagement hook 41 Lock means 43 Lock arm 44 Interlocking link

Claims (1)

(57) [Claims 1] A seat body positioned above a floor panel of a vehicle body, and rear legs before and after extending downward from a lower surface side of the seat body. Before pivoting the upper ends of the front and rear legs back and forth to the seat body, the rear upper pivot support and the lower end of the front legs to pivot the front legs back and forth. A front lower pivot supporting the floor panel and a lower end of the rear leg are removably locked to the floor panel, and the rear leg is rotatable back and forth in this locked state. A locking device pivotally supported by the floor panel, the front and the rear legs are made to move back and forth with the front and rear rotation, and the locking device is released from the locked state to release the seat. An automobile in which the seat can be turned upward and forward around the front lower support. In the seat apparatus, while locking the fastener is interlocked with the seat in its locked state, only when the seat body is in a predetermined portion of the front-rear direction, provided with a locking means for releasing the lock, the A striking device in which the locking device projects from the floor panel
Mosquito and formed at the lower end of the rear leg to the striker
A locking groove that is fitted so as to be detachable from above,
The lower end portion is pivotally supported so that it can rotate freely.
Close the lower end opening and fit this locking groove with the striker
And a hook below the rear leg
The locking hook is rotatably supported at the end and is rotated by the rotation.
To prevent the hook from turning.
An engagement hook, wherein the locking means is rotatably supported by the rear leg.
Lock arm and this lock arm to the seat body.
An interlocking link for dynamic connection, wherein the lock arm is fitted with the locking groove and the striker.
The above-mentioned locking tool which is locked by holding the state
In the vicinity of the engagement hook in
While the rotation is prevented, the seat body is
When it is set as a part, this link
The lock arm is interlocked via this lock arm
Releases the engagement of the engagement hook with the engagement hook.
Enough to be disengaged from the locus of rotation of this engaging hook.
The device for supporting automobile seats.