JP2553746Y2 - Vehicle seat device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat device applied to an automobile or the like.

[0002]

2. Description of the Related Art For example, in trucks and cab-over vehicles, there are not a few structures in which an engine room and an inspection port are provided below the floor where a seat is provided. In this type of vehicle, when inspecting the interior of the engine room, it is necessary to secure the inspection opening by removing the seat. Therefore, this type of vehicle seat device includes a seat cushion and a seat back, and the seat cushion is rotated about the rear end side to be horizontally disposed along the floor surface with the use position. A non-use position is used, and the seat back is moved back and forth in conjunction with the switching of the seat cushion so that a large floor surface under the seat can be secured.

FIG. 7 is a perspective view showing an example of this type of vehicle seat device. This seat device is an example of a seat device for a cab-over vehicle, and includes a driver seat 51A and a passenger seat 51B. The seat 51A includes a seat cushion 52 and a seat back 53, and is fixedly provided at a substantially predetermined position in a substantially predetermined state.

[0004] On the other hand, the seat 51B is similarly constituted by a seat cushion 54 and a seat back 55. Then, in the seat 51B, the seat cushion 54 is rotated about the rear end side as a fulcrum, and by this rotation, the seat cushion 54 is turned upside down with the use position (see FIGS. 7 and 8) disposed horizontally along the floor surface 73. The seat back 55 is also moved back and forth in conjunction with the switching of the seat cushion 54, so that a large floor surface under the seat 51B can be secured. Has become.

FIGS. 8 and 9 show a schematic structure of a moving mechanism of the seat 51B and an operation state thereof.
Therefore, the moving mechanism of the seat 51B shown in FIG. 7 will be further described with reference to FIGS. 8 and 9. The moving mechanism of the seat 51B is an upper hinge mechanism 56 formed corresponding to an intermediate portion of the seat back 55, and a seat back. 55 and a lower hinge mechanism 57 formed corresponding to the lower end portion of the lower lever 55.

The upper hinge mechanism 56 includes a pair of left and right seat back side hinge halves 60, one end of which is rotatably attached to the left and right sides of the seat back 55 via pivots 59, respectively, and a seat back side hinge. A pair of left and right first body side hinges fixedly attached to the vehicle body side wall surface 61 corresponding to the half body 60 and hingedly connected to the other end side of the seat back side hinge half 60 via the pivot 63. And a half 62.

On the other hand, the lower hinge mechanism 57 has a seat cushion side hinge half 64 fixed at one end to the left and right sides of the seat cushion 54, and a vehicle body side corresponding to the seat cushion side hinge half 64. And a pair of left and right second body side hinge halves 66 hingedly connected to the other end of the seat cushion side hinge half 64 via a pivot 65. In addition, the seat cushion side hinge half 6
A lower end portion of the seat back 55 is rotatably attached to an intermediate portion of the seat back 4 via a pivot 67.

Further, a hook 68 is fixedly attached to a lower portion of the front end of the seat cushion 54, and an elongated seal rubber 72a having a substantially pipe shape is provided at front and rear positions on the lower surface.
72b is fixedly attached while lying in the left-right direction. On the wall surface 61 side, one end side is fixed to the wall surface 61 via a fixing member 69, and an engaging ring portion 71 with which a hook 68 is engaged is provided at a tip end on the other end side as a free end. A fixed belt 70 is disposed corresponding to the hook 68.

Next, the operation of the seat 51B will be described. First, as shown in FIGS. 7 and 8, normally, the lower surface of the seat cushion 54 is
The seat cushion 54 is used in a state in which the seat cushion 54 is held horizontally along the floor surface 73, that is, in a state where the seat cushion 54 is disposed at the use position.

When the user wants to release the seat 51B to check the inside of the engine room (not shown), the front lower surface of the seat cushion 54 is lifted upward. Then, the seat cushion 54 is pivoted upward with the pivot 65 as a fulcrum, and the space between the seat cushion side hinge half 64 and the seat back 55 becomes the seat back 55, the seat back side hinge half 60, and the seat back. With the rotation between the side hinge half 60 and the body side hinge half 62,
The seat back 55 rotates about the pivot 67 as a fulcrum, and moves upward and rearward. Further, as shown in FIG. 9, the seat cushion 54 is rotated until the seat cushion 54 is in a state of being inverted with respect to the floor surface 73.

Further, at the rotated final position, the engagement ring 71 of the fixed belt 70 is engaged with the hook 68 of the seat cushion 54 to prevent the seat cushion 55 from rolling in the return direction. FIG. 9 shows a state at the unused position. Therefore, in this state, the sheet 5
The floor under the floor of 1B is greatly opened, so that the seat 51B
Work in the engine room under the floor becomes easier.

On the other hand, when returning the seat 51B from the non-use position to the use position, the engagement ring 71 of the belt 70 engaged with the hook 68 is removed. Then, the weight of the seat cushion 54 causes the seat cushion 54 to rotate downward together with the seat cushion side hinge half 64. Thus, the upper hinge mechanism 56 and the lower hinge mechanism 5
The seat cushion 54 and the seat back 55 return to the use position shown in FIGS. 7 and 8 with the rotation at 7, and the seat 51B can be used again. In this use position, the seat cushion 54 and the floor 7
3, seal rubbers 72a and 72b are interposed, and the seat cushion 54 is received on the floor surface 73 via the seal rubbers 72a and 72b.

[0013]

However, in the seat 51B of the above-described conventional seat apparatus, the pivot 65 is fixed as a structure for moving the seat cushion 54, and the pivot 65 is used as a fulcrum.
Is designed to rotate. Therefore, as shown in FIG. 6, the seal rubbers 72a and 72b move in the lateral direction while being pressed against the floor surface 73 in the vicinity where the seat cushion 54 is arranged at the use position. For this reason, there is a problem that the seat cushion 54 is easily worn and the durability is poor. In addition, since it moves in the lateral direction, the collapsed shape of the seal rubbers 72a and 72b does not become constant at the final position on the use position side, and there is a problem that the seal rubbers 72a and 72b are deformed to deteriorate the sealability.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicle seat device having a structure capable of improving durability and sealing performance.

[0015]

In order to achieve the above object, the present invention comprises a hinge member comprising a body side hinge half and a cushion side hinge half hinged to each other via a pivot. A seat cushion is mounted via a hinge member so as to be pivotally switchable between a use position where the seat cushion is disposed horizontally along the floor surface and a non-use position where the seat cushion is inverted, and the seat cushion is sealed rubber at the use position. In the vehicle seat device mounted on the floor via the hinge, the pivot is provided on one of the two hinge halves of the hinge member, and the other is provided with a long hole in which the pivot is engaged. Extending in the direction
An urging spring is provided for applying an urging force that causes the pivot to abut on the upper end of the long hole so that the seat cushion is raised above the floor surface at the use position, and the urging spring is provided to the seat cushion at the use position. When an external force that overcomes the urging force of the urging spring is applied, the seat cushion is displaced toward the floor surface by play between the pivot and the elongated hole and received on the floor surface via the seal rubber. It is what was constituted.

[0016]

According to this configuration, before an external force that overcomes the urging force of the urging spring is applied to the seat cushion at the use position, the seat cushion is raised from the floor surface by the urging force of the urging spring, and the seat cushion is lifted. When rotated, the seal rubber does not move laterally while being strongly pressed against the floor in the vicinity of the use position, so that the wear of the seal rubber can be reduced. Also, only when an external force that overcomes the urging force of the urging spring is applied, the seat cushion is displaced toward the floor surface due to play between the pivot and the elongated hole, is received on the floor surface via the seal rubber, and is sealed. Since the rubber is always crushed in a certain shape by receiving an external force from above, a stable sealing property can be obtained.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 5 show an embodiment of the present invention. The sheets shown in FIGS. 1 to 5 correspond to the sheet 51B shown in FIGS. 7 to 9. Therefore, in FIGS. 1 to 5, FIGS.
7 to 9 correspond to the sheet members shown in FIGS.
The description is given with the same reference numerals.

The sheet 51B shown in FIGS.
Shows a seat 51B for a front passenger seat in a seat device of a cab-over vehicle, which is constituted by a seat cushion 54 and a seat back 55, and the seat cushion 54 is rotated about the rear end side as a fulcrum. By this rotation, it is possible to switch between a use position (see FIG. 3) horizontally disposed along the floor surface 73 and a non-use position (see FIG. 4) which is inverted, and the seat cushion 54.
The seat back 55 is also moved back and forth in conjunction with the switching of the seating, so that a large floor surface under the seat 51B can be secured.

The moving structure of the seat 51B will be described in more detail. The moving structure of the seat 51B corresponds to an upper hinge mechanism 56 formed corresponding to an intermediate portion of the seat back 55 and a lower end portion of the seat back 55. And a lower hinge mechanism 57 formed as described above.

The upper hinge mechanism 56 includes a pair of left and right seat back hinge halves 60, one end of which is rotatably mounted on each of the left and right sides of the seat back 55 via a pivot 59, and a seat back side hinge. A pair of left and right first body side hinges fixedly attached to the vehicle body side wall surface 61 corresponding to the half body 60 and hingedly connected to the other end side of the seat back side hinge half 60 via the pivot 63. And a half 62.

On the other hand, the lower hinge mechanism 57 includes a seat cushion side hinge half 64 fixed at one end to both left and right sides of the seat cushion 54, and a vehicle body side corresponding to the seat cushion side hinge half 64. And a pair of left and right second body side hinge halves 66 hingedly connected to the other end of the seat cushion side hinge half 64 via a pivot 65. In addition, the seat cushion side hinge half 6
4 are provided with mounting holes 10 formed in the intermediate portion.
The lower end portion of the seat back 55 is rotatably mounted via a pivot 67 (see FIGS. 3 and 4) inserted into the seat back (see FIGS. 1 and 2).

The seat cushion side hinge half 64 is also provided.
A mounting hole 12 provided with a weld nut 11 is formed at a position corresponding to the pivot 65.

On the other hand, the body-side hinge half 66 has an elongated hole 13 through which the pivot 65 is inserted corresponding to the mounting hole 12 of the seat cushion-side hinge half 64. The elongated hole 13 is formed so as to extend vertically when the seat cushion 54 is located at the use position, and the pivot 65 is inserted into the elongated hole 13. In this state, there is play with the pivot 65. In addition, a locking pin 14 is fixedly attached above the long hole 13.

On the other hand, the pivot 65 is composed of a bush 65a and a bolt 65b rotatably mounted through the center of the bush 65a. When connecting the seat cushion side hinge half 64 and the body side hinge half 66, the bush 65 a is mounted in such a manner that the bush 65 a is arranged in the elongated hole 13 with the bolt 65 b attached to the bush 65 a. When the bolt 65b is screwed and fixed to the weld nut 11 at the position where the bolt 65b passes through the mounting hole 12, the bolt 65b can be rotatably connected via the pivot 65.

The seat cushion side hinge half 64 is also provided.
After the first half 15a and the body-side hinge half 66 are connected, the one end 15a
The coil spring 15 is disposed between the locking pin 14 and the pivot 65 so as to lock the b on the pivot 65, and the urging force of the coil spring 15 always keeps the pivot 65 on the upper end inner surface 13 a of the elongated hole 13. They are in contact. Therefore, normally, the hinge half 64 and 66 rotate between the hinge halves 64 in a state where the pivot 65 is in contact with the upper end inner surface 13a of the elongated hole 13 and is positioned.

Further, a hook 68 is fixedly attached to a lower portion of the front end of the seat cushion 54, and a substantially pipe-like elongated seal rubber 72a,
72b is fixedly attached while lying in the left-right direction. On the wall surface 61 side, one end side is fixed to the wall surface 61 via a fixing member 69, and an engaging ring portion 71 with which a hook 68 is engaged is provided at a tip end on the other end side as a free end. A fixed belt 70 is disposed corresponding to the hook 68.

Next, the operation of the sheet 51B will be described. First, usually, the pivot 65 is the upper end inner surface 13a of the long hole 13.
The seat cushion 54 is positioned so that the seal rubbers 72a and 72b are
Immediately before the state in which the seal rubbers 72a and 72b are lightly in contact with the floor surface 73 (including the state where the seal rubbers 72a and 72b are lightly in contact with the floor surface 73).
3, the seat cushion 54 is held horizontally along the floor surface 73 as shown in FIG.

When an occupant sits on the seat cushion 54 in this state, the coil spring 15 extends and the pivot 65 slides downward in the elongated hole 13, so that the entire seat cushion 54 is displaced downward. The seat cushion 54 is received on the floor 73 via the seal rubbers 72a and 72b. Note that when the occupant or the like returns and the force overcoming the coil spring 15 is removed, the pivot 6
5 is displaced upward by the urging force of the coil spring 15,
It returns to the state where it comes into contact with the upper end inner surface 13a of the long hole 13.

When the user wants to release the seat 51B to check the inside of the engine room (not shown), the front lower surface of the seat cushion 54 is lifted upward. Then, the seat cushion 54 is pivoted upward with the pivot 65 as a fulcrum, and the space between the seat cushion side hinge half 64 and the seat back 55 becomes the seat back 55, the seat back side hinge half 60, and the seat back. With the rotation between the side hinge half 60 and the body side hinge half 62,
The seat back 55 rotates about the pivot 67 as a fulcrum, and moves upward and rearward. Further, as shown in FIG. 4, this is rotated until the seat cushion 54 is in a state of being inverted with respect to the floor surface.

Further, in the rotated final position, the engagement ring 71 of the fixed belt 70 is engaged with the hook 68 of the seat cushion 54 to prevent the seat cushion 55 from rolling in the return direction. FIG. 4 shows a state at the unused position. Therefore, in this state, the sheet 5
The floor under the floor of 1B is greatly opened, so that the seat 51B
Work in the engine room under the floor becomes easier.

On the other hand, when returning the seat 51B from the non-use position to the use position, the engagement ring 71 of the belt 70 engaged with the hook 68 is removed. Then, the weight of the seat cushion 54 causes the seat cushion 54 to rotate downward together with the seat cushion side hinge half 64. Thus, the upper hinge mechanism 56 and the lower hinge mechanism 5
7, the seat cushion 54 and the seat back 55 are moved to the use position shown in FIG. 3, that is, immediately before the seal rubbers 72a and 72b are completely in contact with the floor surface 73. The seat 51B can be used again by being rotated to the front side.

Therefore, in this seat device, as shown in FIG. 5, the movement of the seal rubbers 72a and 72b shows that before the external force which overcomes the urging force of the coil spring 15 as the urging spring is applied to the seat cushion 54 at the use position. As shown by the dashed line, the seat cushion 54 is lifted from the floor surface 73 by the urging force of the coil spring 15, and the seal rubbers 72a and 72b are placed near the position where the seat cushion 54 is disposed at the use position as in the conventional structure. Since it does not move laterally while pressing against the floor,
Wear of the seal rubbers 72a, 72b can be reduced.

Only when an external force that overcomes the urging force of the coil spring 15 is applied, the seal rubber 72
The seat cushion 54 is displaced downward by the play between the pivot 65 and the elongated hole 13 until the a and 72b are brought into contact with the floor surface 73 shown by the solid line from the position indicated by the dashed line. 54 is a seal rubber 72a, 7
Since the seal rubbers 72a and 72b receive the external force from the upper side, the seal rubbers 72a and 72b are crushed in a certain shape because the seal rubbers 72a and 72b receive the external force.

In the above-described embodiment, the structure in which the elongated hole 13 and the locking pin 14 are provided in the body side hinge half 66 and the pivot 65 is provided in the cushion side hinge half 67 has been disclosed.
Conversely, a structure in which the pivot 65 is provided on the body side hinge half 66 and the elongated hole 13 and the locking pin 14 are provided on the cushion side hinge half 67 may be used.

[0035]

As described above, according to the vehicle seat device of the present invention, before the external force that overcomes the urging force of the urging spring is applied to the seat cushion at the position of use, the seat cushion is moved by the urging spring. When the seat cushion is turned by the urging force and the seat cushion is rotated, the seal rubber does not move laterally while being strongly pressed against the floor near the use position, reducing wear of the seal rubber. The durability can be improved. Also, only when an external force that overcomes the urging force of the urging spring is applied, the seat cushion is displaced toward the floor surface due to play between the pivot and the elongated hole, is received on the floor surface via the seal rubber, and is sealed. Since the rubber is always crushed in a certain shape by receiving an external force from above, an effect such as a stable sealing property can be expected.

[Brief description of the drawings]

FIG. 1 is a side view of a main part of a vehicle seat device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the above shown in FIG.

FIG. 3 is a side view showing a state in which a seat of the apparatus according to the embodiment is arranged at a use position.

FIG. 4 is a side view showing a state in which the seat of the apparatus of this embodiment is arranged at a non-use position.

FIG. 5 is a schematic diagram for explaining the movement of a seal rubber of the apparatus according to the embodiment.

FIG. 6 is a schematic diagram for explaining the movement of a seal rubber of a conventional device.

FIG. 7 is a perspective view showing an example of a conventional vehicle seat device.

FIG. 8 is a side view showing a state in which a seat of the conventional device is arranged at a use position.

FIG. 9 is a side view showing a state in which the seat of the conventional device is arranged at a non-use position.

[Explanation of symbols]

 Reference Signs List 13 long hole 15 coil spring (biasing means) 51B seat 54 seat cushion 55 seat back 57 lower hinge mechanism 64 seat cushion side hinge half 66 body side hinge half 65 pivot 72a seal rubber 72b seal rubber 73 floor

Claims (1)

(57) [Scope of request for utility model registration] 1. A hinge member comprising a body-side hinge half and a cushion-side hinge half hinged to each other via a pivot, and a seat cushion is horizontally mounted on the body along the floor via the hinge member. For a vehicle, the seat cushion is mounted on the floor via the seal rubber at the use position while being rotatably switchable between a use position disposed on the vehicle and a non-use position inverted. In the seat device, the pivot is provided on one of the two hinge halves of the hinge member, and the other is provided with an elongated hole in which the pivot is engaged in the vertical direction, and the other is provided at the upper end of the elongated hole. An urging spring for applying an urging force for bringing the seat cushion up above the floor surface at the use position by bringing a pivot into contact with the seat cushion; When an external force that overcomes the urging force of the urging spring is applied to the seat cushion, the seat cushion is displaced toward the floor by the play between the pivot and the elongated hole, and the seat cushion is displaced toward the floor via the seal rubber. A seat device for a vehicle, wherein the seat device is adapted to be received.