JPH0659130U - Vehicle seat device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a vehicle seat device having a structure capable of improving the appearance. [Structure] A body side hinge half 24 fixedly attached to a vehicle body side corresponding to a lower end portion of a seat back 5, and one end fixed to a rear end portion of a seat cushion 4 and the other end being a pin 2
Cushion-side hinge half body in which the lower end portion of the seat back 5 is rotatably attached to the body-side hinge half body 24 through 7 and is rotatably attached to the intermediate portion through a bolt 22. 13, one end of which is rotatably attached to the lower end of the seat back 5 and the other end of which is the pin 3
And a link member 28 rotatably attached to the body side hinge half body 24 via the body side hinge half 24, and the body side hinge half body 2 is provided between the seat back 5 and the body side hinge half body 24.
4, a parallel link mechanism 36 including the cushion-side hinge half body 13, the link member 28, and the seat back 5 is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a vehicle seat device applied to an automobile or the like.

[0002]

[Prior art]

 For example, in trucks and cab-over vehicles, there are quite a few structures in which the engine room and inspection port are provided under the floor where the seats are installed. For this type of vehicle, when inspecting the engine room, it is necessary to remove the seat and secure an inspection port. Therefore, this type of vehicle seat device is provided with a seat cushion and a seat back, and the seat cushion is rotated about the rear end side as a fulcrum to be horizontally arranged along the floor surface and an inverted position. The structure is such that it can be switched to the unused position, and the seat back can be moved back and forth in conjunction with the switching of the seat cushion to secure a large floor surface under the seat.

FIG. 5 is a perspective view showing an example of this type of vehicle seat device. This seat device exemplifies a seat device of a cab-over vehicle, and includes a driver seat 51A and a passenger seat 51B. Of these, the seat 51A is composed of a seat cushion 52 and a seat back 53, and is fixedly arranged at a substantially predetermined position in a substantially predetermined state.

On the other hand, the seat 51 B is also composed of a seat cushion 54 and a seat back 55. Then, in this seat 51B, the seat cushion 54 is rotated around the rear end side as a fulcrum, and by this rotation, the seat cushion 54 is inverted with respect to the use position (see FIGS. 5 and 6) horizontally arranged along the floor surface 73. The structure can be switched to the unused position (see FIG. 7) and the seat back 55 can be moved back and forth in conjunction with the switching of the seat cushion 54 to secure a large floor surface under the seat 51B. It has become.

6 and 7 show the schematic structure of the moving mechanism of the seat 51B and its operating state. Therefore, further explaining the moving mechanism of the seat 51B shown in FIG. 5 together with FIG. 6 and FIG. 7, the moving mechanism of the seat 51B is an upper hinge mechanism 56 formed corresponding to an intermediate portion of the seat back 55. The lower hinge mechanism 57 is formed corresponding to the lower end portion of the seat back 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 side surfaces of the seat back 55 via pivots 59, respectively. A pair of left and right first bodies fixedly attached to the wall surface 61 on the vehicle body side corresponding to the hinge half body 60 and hinged to the other end side of the seat back side hinge half body 60 via a pivot 63, respectively. Side hinge half 62.

On the other hand, the lower hinge mechanism 57 includes a seat cushion side hinge half body 64 fixed at one end side to both left and right side surfaces of the seat cushion 54, and a vehicle body side corresponding to the seat cushion side hinge half body 64. Is fixedly attached to the wall surface 61 of the seat cushion, and is composed of a pair of left and right second body-side hinge halves 66 hinged to the other end of the seat cushion-side hinge half 64 via a pivot 65. . In addition, a lower end portion of the seat back 55 is rotatably attached to an intermediate portion of the seat cushion side hinge half body 64 via a pivot 67.

Further, a hook 68 is fixedly attached to a lower portion of a front end of the seat cushion 54, and a leg 72 is fixedly attached to an intermediate lower surface side. 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 the hook 68 is engaged is provided at the other end side free end. A fixed belt 70 formed of is provided corresponding to the hook 68.

Next, the operation of the seat 51B will be described. First, as shown in FIGS. 5 and 6, normally, the legs 72 of the seat cushion 54 are in contact with the floor surface 73, and the seat cushion 54 is held horizontally along the floor surface 73, that is, It is used in a state where it is arranged at the use position.

When it is desired to remove 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 rotated upward with the pivot 65 as a fulcrum, and the space between the seat cushion side hinge half body 64 and the seat back 55 is provided between the seat back 55, the seat back side hinge half body 60, and the seat back side. With the rotation between the side hinge half body 60 and the body side hinge half body 62, the seat back 55 moves upward and rearward with the pivot 67 as a fulcrum. Further, as shown in FIG. 7, this is rotated until the seat cushion 54 is in an inverted state with respect to the floor surface.

Further, at the final rotated position, the engaging ring portion 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 returning direction. FIG. 7 shows a state in this unused position. Therefore, in this state, the underfloor of the seat 51B is largely opened, which facilitates the work in the engine room under the floor of the seat 51B.

On the other hand, when returning the seat 51B from the non-use position to the use position again, the engaging wheel portion 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. As a result, the seat cushion 54 and the seat back 55 return to the use positions shown in FIGS. 5 and 6 while the upper hinge mechanism 56 and the lower hinge mechanism 57 rotate, and the seat 51B can be used again. .

[0013]

[Problems to be solved by the device]

 However, in the seat 51B in the above-described conventional seat device, as a structure for moving the seat 51B, 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 corresponding to the above. Of these, the lower hinge mechanism 57 is disposed at the lower end side of the seat 51B and is not so visible as it is less visible from inside the vehicle, but the upper hinge mechanism 57 corresponds to the intermediate portion of the seat back 55. Since it is installed in the car, it looks good from the inside of the car and is not well-formed. For this reason, there has been a problem that a device for making the lower hinge mechanism 57 inconspicuous is required, the structure is complicated, and the cost is high.

The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat device having a structure capable of improving the appearance without increasing the cost.

[0015]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention comprises a seat cushion and a seat back, and the seat cushion is rotated around a rear end side as a fulcrum, and by this rotation, the seat cushion is arranged horizontally along a floor surface. In a vehicle seat device that can be switched between a use position and an inverted non-use position, and in which the seat back is moved back and forth in conjunction with the switching of the seat cushion, it corresponds to a lower end portion of the seat back. And a body side hinge half body fixedly attached to the vehicle body side, and one end fixed to a rear end portion of the seat cushion, and the other end rotatably hinged to the body side hinge half body via a pivot. In addition, the cushion-side hinge half body, in which the lower end of the seat back is rotatably attached to the intermediate portion via a pivot, and one end of the seat back is A link member that is rotatably attached to an end portion, and the other end is rotatably attached to the body-side hinge half body via a pivot, and the seat back and the body-side hinge half body are provided. A parallel link mechanism including the body side hinge half body, the cushion side hinge half body, the link member, and the seat back is provided between the two.

[0016]

[Action]

 According to this configuration, when the seat cushion is switched from the use position to the non-use position, or conversely from the non-use position to the use position, the cushion side hinge half body fixed at one end to the seat cushion is used. The parallel link mechanism is driven, and the back and forth movement of the seat back is also performed simultaneously. Therefore, in the conventional structure, while the hinges are provided above and below the seat back, in the case of the present invention, it suffices that the seat back be provided at one place on the lower end side, and the appearance may be impaired by providing the hinge. It is possible to reduce the number of points where

[0017]

【Example】

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 3 is a perspective view of a vehicle seat device according to an embodiment of the present invention. This seat device is, for example, a seat device for a cab-over vehicle, and includes a driver seat 1A and a passenger seat 1B. Of these, the seat 1A is composed of a seat cushion 2 and a seat back 3, and is fixedly arranged at a substantially predetermined position in a substantially predetermined state.

On the other hand, the seat 1 B is also composed of a seat cushion 4 and a seat back 5. In this seat 1B, the seat cushion 4 is rotated around the rear end side as a fulcrum, and by this rotation, the seat cushion 4 is horizontally arranged along the floor surface 6 (see FIGS. 1 and 2) (see FIG. 1). And FIG. 3) and an inverted non-use position (see FIG. 2), and in conjunction with the switching of the seat cushion 4, the seat back 5 is also moved back and forth and the floor under the seat 1B. It has a structure that can secure a large surface.

1 and 2 show the schematic structure of the moving mechanism of the seat 1B and its operating state, and FIG. 4 shows the skeleton structure inside the seat 1B. Therefore, the moving mechanism of the seat 1B shown in FIG. 3 will be further described with reference to FIGS. 1, 2, and 4.

First, in the seat cushion 4, a seat cushion frame 8 in which a plurality of cushion springs 7 are stretched is provided. A cushion pad (not shown) is attached to the seat cushion frame 8, and the upper side of the cushion pad is viewed. It is in a state of being covered with a skin material not shown.

A substantially L-shaped hook 9 is provided on the front side of the seat cushion frame 8 so as to project downward from the lower end of the front side of the seat cushion 4, and further on the outer side. Legs 10 are provided in the side intermediate portion in a state of hanging downward.

In addition, a projecting piece 11 is provided at the inner rear end of the seat cushion frame 8 in a state of projecting upward, and an engaging hole 12 formed by penetrating left and right in the projecting piece 11 is formed. ing. On the other hand, the seat cushion side hinge half 13 is provided at the outer rear end of the seat cushion frame 8 in a state of protruding upward. The seat cushion side hinge half 13 integrally includes a vertical portion 13a directed upward from the seat cushion frame 8 and a horizontal portion 13b extending substantially rearward from the tip of the vertical portion 13a. Engagement holes 14 and 15 penetrating to the left and right are formed at a substantially intermediate portion serving as a boundary of the horizontal portion 13b and at a tip end side of the horizontal portion 13b.

On the other hand, in the seat back 5, a seat back frame 17 in which a plurality of cushion springs 16 are stretched is provided. A cushion pad (not shown) is attached to the seat back frame 17, and the upper side of the cushion pad is attached. It is covered with a skin material (not shown).

Further, the engagement pin 13 is attached to the inner lower end of the seatback frame 17 in a state in which the engagement pin 13 projects substantially at a right angle from the side surface of the frame 12 in correspondence with the engagement hole 12 on the seat cushion frame 8 side. Has been. On the other hand, mounting holes 18 and 19 are formed in the outer lower end portion of the seatback frame 17 so as to be vertically separated from each other, and weld nuts 20 and 21 are provided on the back surfaces of the mounting holes 18 and 19, respectively. Is attached. The mounting hole 18 of the two mounting holes 18 and 19 corresponds to the mounting hole 14 of the seat cushion side hinge half 13.

The seat cushion 4 and the seat back 5 are attached to the seat cushion side hinge half body 13 with the engagement pin 13 serving as a pivot inserted and engaged with the engagement hole 12. When the bolt 22 which also serves as a pivot is inserted into the mounting hole 13 from the outside of the seat cushion side hinge half body 13 and the screw nut is screwed and fixed to the weld nut 20 through the mounting hole 18, The engaging pin 13 and the bolt 22 are rotatably hinged to each other as a fulcrum to be integrated.

On the other hand, the seat cushion 4 and the seat back 5 integrated in this way are attached to the wall surface 3 on the vehicle body side. The wall surface 3 side corresponds to the seat back side hinge half 13, The body-side hinge half body 24 is fixedly attached by a mounting screw (not shown). The body-side hinge half 24 is provided with two mounting holes 25 and 26 which are vertically separated from each other. Then, the mounting hole 25 of the cushion-side hinge half body 13 is made to correspond to the mounting hole 25, and in this state, when the pin 27 is inserted into the mounting hole 24 and the mounting hole 15 and caulked, the cushion-side hinge half body 13 and The hinge half 24 on the body side is rotatably connected.

In addition, a link member 28 is attached between the body-side hinge half 24 and the seat back 5. Mounting holes 29 and 30 are formed at both ends of the link member 28, respectively. Then, the mounting hole 29 of the link member 28 is made to correspond to the mounting hole 19 of the seat back frame 17, and the bolt 31 serving as a pivot is inserted into the mounting hole 29 from the outside of the link member 28, and further passed through the mounting hole 19. It is screwed and fixed to the weld nut 21. Then, the link member 28 and the seat back frame 17 are rotatably connected to each other with the bolt 31 as a fulcrum. Further, the mounting hole 30 of the link member 28 is made to correspond to the mounting hole 26 of the body side hinge half body 24, and the pin 32 serving as a pivot is inserted into the mounting hole 26 from the outside of the body side hinge half body 24. The pin 32 is crimped on the back side of the link member 28 through 30. Then, the link member 28 and the body-side hinge half body 24 are rotatably connected to each other about the pin 32 as a fulcrum.

That is, in the structure of the present embodiment, the body side hinge half body 24, the cushion side hinge half body 13, the link member 28 and the seat back 5 form a parallel link mechanism 36. .

On the side of the wall surface 23, one end side is fixed to the wall surface 23 via a fixing member 33, and the engaging ring portion 34 with which the hook 9 is engaged is a free end of the other end side. The fixing belt 35 provided in the above is arranged corresponding to the hook 9.

Next, the operation of the seat 1B will be described. First, as shown in FIGS. 1 and 3, normally, the legs 10 of the seat cushion 4 are in contact with the floor surface 6, and the seat cushion 4 is held horizontally along the floor surface 6, that is, It is used in a state where it is arranged at the use position.

When it is desired to remove the seat 1B for checking the inside of the engine room (not shown), the front lower surface of the seat cushion 4 is lifted upward. Then, the seat cushion 4 is rotated upward with the pin 27 as a pivot serving as a fulcrum, and the parallel link mechanism 36 is rotated with the pin 27 and the pin 32 and the bolts 22 and 31 serving as a fulcrum as pivots. The seat back 5 is guided and moves upward and rearward. Further, as shown in FIG. 2, the seat cushion 4 is rotated until the seat cushion 4 is inverted with respect to the floor surface 6.

Further, at the final rotated position, the engaging ring portion 34 of the fixed belt 35 is engaged with the hook 9 of the seat cushion 4 to prevent the seat cushion 5 from rolling in the returning direction. FIG. 2 shows a state in this unused position. Therefore, in this state, the underfloor of the seat 1B is largely opened, which facilitates the work in the engine room under the seat 1B.

On the other hand, when returning the seat 1B from the non-use position to the use position again, the engaging ring portion 34 of the fixing belt 35 engaged with the hook 9 is removed. Then, the weight of the seat cushion 4 causes the seat cushion 4 to rotate downward together with the seat cushion side hinge half 13. As a result, the seat cushion 4 and the seat back 5 return to the use positions shown in FIGS. 1 and 3 while the parallel link mechanism 36 rotates, and the seat 1B can be used again.

Therefore, in the structure of this embodiment, since the seat cushion 4 and the seat back 5 can be firmly held on the vehicle body side by the parallel link mechanism 36 provided on the lower end side of the seat back 5, the conventional structure Therefore, it is not necessary to provide the upper hinge mechanism provided in the middle part of the seat back. Therefore, the appearance of the seat back 5 is improved by eliminating the hinge mechanism in the middle portion of the seat back 5, and the structure is simplified, so that the cost can be suppressed and the cost can be reduced.

In the structure of the above embodiment, the structure in which the parallel link mechanism 36 is provided only on the outer side surface is disclosed, but it may be provided if it is provided on the inner side surface, that is, on both the left and right sides. is there.

[0036]

[Effect of device]

 As described above, according to the vehicle seat of the present invention, when the seat cushion is switched from the use position to the non-use position, or conversely from the non-use position to the use position, one end is fixedly attached to the seat cushion. Since the parallel link mechanism is driven via the cushion-side hinge half, the front-back movement of the seatback is simultaneously performed, so in the conventional structure, hinges are provided above and below the seatback. On the other hand, in the case of the present invention, only one position on the lower end side of the seat back is required. Therefore, it is possible to reduce the number of places where the appearance may be impaired by providing the hinge, and it is expected that the appearance is improved.

[Brief description of drawings]

FIG. 1 is a side view showing a seat in a seat device according to an embodiment of the present invention in a state in which a seat is placed in a use position.

FIG. 2 is a side view showing a state in which a seat is arranged in a non-use position in the above-mentioned embodiment apparatus.

FIG. 3 is a perspective view of a vehicle seat device according to the above embodiment.

FIG. 4 is an exploded perspective view showing a structure of a main part inside a seat in the apparatus according to the above embodiment.

FIG. 5 is a perspective view showing an example of a conventional vehicle seat device.

FIG. 6 is a side view showing a state in which a seat is arranged in a use position in a conventional seat device.

FIG. 7 is a side view showing a state in which a seat in a conventional seat device is arranged in a non-use position.

[Explanation of symbols]

 1B seat 4 seat cushion 5 seat back 6 floor surface 13 seat cushion side hinge half 22 bolt (pivot) 24 body side hinge half 27 pin (pivot) 28 link member 31 bolt (pivot) 32 pin (pivot) 36 parallel link mechanism

Claims (1)

[Scope of utility model registration request] 1. A seat cushion and a seat back are provided, and the seat cushion is rotated about a rear end side as a fulcrum, and by this rotation, the seat cushion is inverted from a use position horizontally arranged along a floor surface. In a vehicle seat device that can be switched to a non-use position and in which the seat back is moved back and forth in conjunction with the switching of the seat cushion, the seat back is fixed to a vehicle body side corresponding to a lower end portion of the seat back. Attached to the body side hinge half, one end of which is fixed to a rear end portion of the seat cushion, and the other end of which is rotatably hinged to the body side hinge half through a pivot, and an intermediate portion. A cushion-side hinge half body to which a lower end portion of the seat back is rotatably attached via a pivot, and one end rotatably attached to a lower end portion of the seat back. And a link member rotatably attached to the body-side hinge half through the other end via a pivot, and between the seat back and the body-side hinge half,
A vehicle seat device comprising a parallel link mechanism including the body side hinge half body, the cushion side hinge half body, the link member and the seat back.