JPH0442210B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a seat device used in a vehicle or the like.

(Prior art) The rear end of the conventional seat cushion can be rotated around the rear end of the seat cushion from a seatingable state to a state in which the seating surface (upper surface) of the seat cushion is raised to face the front surface of the seat back or folded. As a folding sheet device, for example, those shown in FIG. 8A and B are known.

In the conventional seat device shown in FIG. 8A, the rear end of the seat cushion 01 is positioned in contact with the lower part of the seat bag 02, and the seat cushion rotation shaft 03 projects forward from the seat bag 02. It was provided between a bracket 05 fixed to the leg 04 and the seat back 02 so as to be located at the upper rear end of the seat cushion, and a bracket 06 extending upward from the side surface of the seat cushion. Therefore, the seat cushion 0 reaches the position shown by the imaginary line.
1 can be rotated and folded. Also, the 8th
Another conventional seat device shown in FIG. I was able to rotate and fold the seat cushion 01.

(Problems to be Solved by the Invention) However, in all of these conventional sheet devices, there are restrictions on folding and the device.

In the case of Fig. 8 A, the seat cushion rotation axis is 0.
3 is located on the side of the seat cushion, the legs and a seat frame connecting the legs are provided at the bottom of the seat cushion, and the seat cushion extends further outward than the legs and seat frame. Difficult to use for things. Furthermore, if the seat cushion rotation axis is set downward, when the seat cushion is folded, the rear end of the seat cushion comes into contact with the front surface of the seat bag, making it difficult to rotate the seat cushion. Furthermore, in the case shown in FIG. 8B, the seat back moves and is difficult to operate, resulting in poor operability. In addition, in order to ensure that the seat cushion rotates smoothly in any case, the thickness of the seat cushion and seat back, as well as the position and shape of the seat cushion rotation axis should be considered, and the seat cushion A problem arises in that a gap must be provided between the seat bag and the seat bag, and that the gap must be minimized, which requires time and effort in manufacturing and assembling.

In addition, an engine cover is provided on the floor of the passenger compartment.
In a so-called cab-over type vehicle, examples of the seat device installed on the engine cover are disclosed in Japanese Utility Model Application No. 58-25238 and Japanese Utility Model Application No. 48-24119.
The one shown in Publication No. 1 is known. However, because this seat device supports the seat cushion directly with the engine cover, the height of the seat cushion can only be determined by the shape of the floor surface or the thickness of the seat cushion. This method has the disadvantage that it cannot be applied to vehicles with mostly flat floors.

Therefore, it is conceivable to use a seat device such as that described in JP-A-58-164445, in which the seat cushion is provided with legs and the seat cushion can be folded. This seat device has no gap between the rear end of the seat cushion and the lower end of the seat back, but when folding the seat back, the seat back is folded down, overlapped with the seat cushion, and then both are raised up, which is a problem in that it is cumbersome to operate. It was hot.

(Means for Solving the Problems) The present invention was made for the purpose of solving the above-mentioned problems, and in order to achieve this purpose, the present invention provides a seat cushion that The seat cushion is placed on a seat frame that connects the seats, and the seat cushion is supported so as to be rotatable about the seat cushion rotation axis from a seated state to a folded state raised toward the seat back side. In the seat device, a link rotation shaft is supported by a link support bracket fixed to the seat frame or the leg at a position spaced forward from the rear end of the seat cushion, and a link rotation shaft is supported on the rear back surface of the seat cushion. , a seat cushion support bracket is fixed to the seat cushion support bracket, and the seat cushion support bracket includes a seat cushion at a position between the rear end of the seat cushion in the seated state and the link rotation shaft.
The seat cushion rotation shaft is provided, a link member is interposed between the link rotation shaft and the seat cushion rotation shaft, and the seat cushion rotation shaft and the link rotation shaft are connected to each other. When the seat cushion is rotated to the folded state, the rear end of the seat cushion is provided with a dimensional separation such that the rear end of the seat cushion does not come into contact with the seat frame and the legs and prevent rotation of the seat cushion, The link support bracket is provided with a link rotation stopper that stops the link member from rotating forward from an upright position when the link member is rotated about the link rotation axis. It was used as a means.

(Function) When folding the sheet device of the present invention, the following procedure is used.

First, when the rear part of the seat cushion is pulled forward and upward, the link member rotates around the link rotation axis, and the rear end of the seat cushion moves forward and upward, causing the seat back and the rear end of the seat cushion to The contact comes off. At this time, as the link member rotates forward and upward, the seat cushion rotation shaft is separated forward and upward from the seat bag and upward from the legs and seat frame. At this position, the link member contacts the link rotation stopper and is no longer rotated forward, so that the link member is in an upright state. Next, with this seat cushion rotating shaft separated from the seat back, legs, and seat frame, the seat cushion can be rotated toward the seat back and folded.

Therefore, when installing the seat according to the present invention, the seat cushion rotation shaft can be moved forward and upward away from the seat bag, and further upward away from the legs and the seat frame.

(Example) Hereinafter, an example of the present invention is shown in FIGS. 1 to 7 and will be described in detail.

First, the configuration of the embodiment will be explained.

As shown in the figure, the seat device according to the embodiment of the present invention includes a seat cushion 10, a seat bag 20,
Seat frame 30, link member 40, leg 104
It is installed facing the front of the vehicle behind the driver's seat 103 of a cab-over type automobile A having an engine cover 102 provided on the floor surface 101 of the vehicle body.

Incidentally, as shown in FIG. 2, the engine cover 102 is arranged approximately at the center in the vehicle width direction, and the end on the left side of the vehicle is pivotally attached to the floor surface 101.

The seat frame 30 is a frame formed of a round pipe for fixedly supporting one side of the seat cushion 10 divided into two parts and removably mounting and supporting the other side, and includes flat legs 104, 105 and connects the legs 104 and 105.
Further, as shown in FIGS. 3 and 4, the seat frame 30 is arranged above the engine cover 102, and its left front end is bent inward so as not to overlap with the rotation locus of the engine cover 102. Thus, a relief portion 31 is formed.

Further, this seat frame 30 is provided with a reinforcing frame 32 in the front-rear direction at the central portion, and two link support brackets facing forward in the portion of the seat frame 30 partitioned on the left side by the reinforcing frame 32. 33, 33 are arranged side by side, and a rear hook 34 is provided at the center thereof.

The rear hook 34, as shown in FIG.
Support member 35 fixed to seat frame 30
A lever 36 is rotatably attached to the support member 35, and a base 37 is rotatably attached to a position closer to the tip of the lever than the rotation center 39 of the lever 36.

Note that among the legs 104 and 105, the left leg 10
5 is formed short in front and rear dimensions so as not to overlap on the engine cover 102. When a load is applied to the tip of the seat cushion 10 on the escape portion 31, the column-shaped front leg 13 is attached to the back surface 23 of the seat cushion 10 to ensure safety even if the rear hook 34 is forgotten. It is attached at a position corresponding to section 31. The tips (lower ends) of the front legs 13 are in contact with the engine cover 102 and support the seat cushion 10 when the seat is in a seatable state.

Further, at the tip of the link support bracket 33, there is a link rotation stopper 38 on the left and right sides that abuts against the end surface of the link member 40 to restrict the forward rotation of the seat and stop the link member in an upright state. (Fig. 1, Fig. 4).

The seat cushion 10 is formed to be larger in front, rear, right and left dimensions than the seat frame 30 and the legs 104 and 105, and is supported by the seat frame 30.
are the right seat cushion 1 for one person each.
1 and a left seat cushion 12.

The right side seat cushion 11 is fixedly supported on the right side of the seat frame 30, and the left side seat cushion 12 is supported on the left side of the seat frame 30 via a link member 40 in a separable manner. .

The left seat cushion 12 is formed so as to be supported by the seat frame 30 in a mounted state when the seat apparatus is in a seated state (seated state).

Further, a seat cushion support bracket 14 is attached to the back surface 23 of the left seat cushion 12 to be connected to the link member 40 and supported by the link member 40. This seat cushion support bracket 14 is attached to the back surface 23 of the left seat cushion 12, as shown in FIG.
a cushion mounting plate 15 that is fixedly attached to the cushion mounting plate 15; connecting portions 16, 16 extending downward from both left and right ends of the cushion mounting plate 15; A rear hook hook portion 17 is provided.

The rear hook hook portion 17 is hooked to the cap 37 of the rear hook 34 provided on the seat frame 30 when the left seat cushion 12 is in the seated state, and restricts the forward sliding movement of the left cushion 12. . Further, the connecting portion 16,
Connection holes 18, 18 are formed in each of the holes 16, respectively.

The base 37 of the rear hook 34 and the rear hook latching portion 17 can be locked by rotating the tip of the lever 36 rearward and upward, as shown by the solid line in FIG. 5. .

The seat bag 20 is attached to a support bracket 106 formed at the rear of the legs 104, 105, as shown in FIG. Further, as shown in FIG.
It is arranged so as to be in contact with the rear end 19 so that there is no gap between the two.

In addition, this seat bag 20 is shown in FIG.
It is formed so that the inclination angle can be changed by operating the reclining control lever 22 using a known mechanism. (Details not shown) The link members 40, 40 are provided with a link rotation shaft 41 on one end side, and a left cushion rotation shaft 42 on the other end side. , Left cushion rotation axis 4
The link members 40, 40 have one end attached to the link support brackets 33, 33 so as to be rotatable by a link rotation shaft 41. The other end of the seat cushion support bracket 14 is rotatably attached to the connecting portion 16 of the seat cushion support bracket 14 by means of a left cushion rotation shaft 42.

Further, as shown in FIG. 1, the link members 40, 40 include shoes that abut against the connecting portions 16, 16 and restrict the rotation of the seat cushion 10 when the left seat cushion 12 is in the folded state. A shock stopper 43 is provided to protrude toward the connection bracket 14 side.

Note that the link members 40, 40 are connected to the connecting rod 4.
Connected by 4.

Furthermore, the length of the link member 40 interposed between the link rotation shaft 41 and the seat cushion rotation shaft 42, that is, the length of the link member 40 interposed between the link rotation shaft 41 and the seat cushion rotation shaft 42, The length between the left seat cushion 12 and the left seat cushion 12 when the left seat cushion 12 is rotated to the folded state is
The rear end 19 is connected to the seat frame 30 and the leg 10.
The left seat cushion 12 is provided with a distance of at least a distance such that rotation of the left seat cushion 12 is not prevented by contacting the seat cushion 5.

Contact here does not mean that the rear end 19 of the left seat cushion 12 does not contact the seat frame 30 or the leg 105 at all, but it means that the amount of contact is not such that it cannot rotate. do. Then, the rear end 1 of the left seat cushion 12
9 is provided with an operation belt 24 to facilitate the operation of pulling the rear part of the seat cushion forward and upward.

Next, the operation of the embodiment will be explained.

When opening the engine cover 102 for engine inspection or the like, the left seat cushion 12 is folded according to the following procedure.

First, the lever 36 of the rear hook 34 is rotated downward to the front side to release the latch between the rear hook hook part 17 and the base 37.

Next, the operating belt 2 located between the rear end of the left seat cushion 12 and the lower end of the seat back 20
4 and press the left seat cushion 12.
Lift the rear part upward and forward.

Further, at this time, the link member 40 is rotated about a link rotation shaft 41 supported by the link support bracket 33 on one end side, and this rotation causes the left cushion rotation shaft 42 on the other end side to rotate toward the seat back. 2
It is moved forward and upward away from 0.
At this time, the rear end 19 of the left seat cushion 12
is moved upward and away from the seat frame 30 and the jamb 105. (...Dotted line in Figure 1) Next, after supporting the front part of the left seat cushion 12, the cushion 12 is moved around the left cushion rotation axis 42 so that the seat surface 100 and the back abutment surface 21 face each other. Rotate to fold the left seat cushion 12.

The rotation of the link member 40 relative to the link support bracket 33 (seat frame 30) about the link rotation axis 41 is as shown in FIG.
The link member 40 is regulated when it comes into contact with the link rotation stopper 38 formed at the tip of the link support bracket 33.

Further, the rotation of the left seat cushion 12 about the left seat cushion rotation shaft 42 is caused by the first rotation.
As shown in the figure, the seat cushion support bracket 14 on the back side is regulated when it comes into contact with a cushion stopper 43 formed on the link member 40. (...FIG. 1, two-dot chain line) After that, the left seat cushion 12 may be further rotated. In that case, the link member 40 rotates toward the seat bag 20 and stops when the left seat cushion 12 comes into contact with the seat bag 20. (...FIG. 1, one-dot chain line) As described above, the engine cover 102 is opened after folding the left seat cushion 12 and removing obstacles on the rotation trajectory of the engine cover 102.

Next, when returning the left seat cushion 12 to a seatingable state after closing the engine cover 102, the following operation is performed in reverse to the folding operation described above.

First, the left seat cushion 12 is rotated forward about the left cushion rotation shaft 42 until the front leg 13 contacts the engine cover 102, and when the front leg 13 contacts the engine cover 102, the left seat cushion 12 is moved rearward.

Due to this rearward movement of the left seat cushion 12, the link member 40 is rotated rearward about the link rotation shaft 41, and the rear part of the left seat cushion 12 is also supported by the seat frame 30.

At this time, the rear hook latching part 17 of the left seat cushion 12 is in a state where it can be latched to the base 37 of the rear hook 34.Hang the base 37 on the rear hook latching part 17 by hand, and then push the lever 36. It is locked by rotating it upwards.

As explained above, the following effects can be obtained by mounting the seat according to the embodiment of the present invention.

Although the left seat cushion 12 is formed so that the cushion side can be moved and folded, the left seat cushion 12
There is no gap between the seat back 20 and the seat back 20, making it comfortable to sit on. Moreover, this is due to the provision of the link member 40, and the left cushion rotation shaft 42
It is not necessary to take the trouble of positioning the left side seat cushion 12 and the thickness of the seat back 20 accurately.

Therefore, the engine cover 10 is placed under the seat device.
It is most suitable as a seat device to be installed in a place where there are 2 or storage compartments.

In addition, the rear hook 34 and the rear hook hook part 1
7, the locking of the left seat cushion 12 in the seated state is ensured, and there is no inconvenience that the left seat cushion 12 moves in the seated state.

Further, since the left side seat cushion 12, which is a movable part of the seat cushion 10, is divided, there is no need to move the entire seat cushion 10, and the operation is easy.

Hereinafter, embodiments of the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to these embodiments, and the present invention may be modified without departing from the gist of the present invention. included.

For example, the seat device of the present invention can be used not only on an engine cover as in the embodiment, but also on various seats that require folding.

Furthermore, the shapes of the seat cushion frame and legs are not limited to the embodiments.

(Effects of the Invention) As explained above, in the seat device of the present invention, the seat cushion rotation axis is moved forward and upward away from the seat back and moved upward from the seat frame and legs by the link member. Even if the rear end of the seat cushion and the lower end of the seat bag come into contact with each other in the seated state, there is no need to take the trouble of accurately determining the thickness of the seat cushion or seat bag or the position of the seat cushion rotation axis. Therefore, even if the seat cushion is placed on the seat frame or legs, the seat device can be easily folded by rotating the seat cushion side.

In addition to the above effects, the folding operation of the seat cushion is very simple as all that is required is rotation of the seat cushion.Furthermore, the seat cushion is supported by the seat cushion frame and the legs. Therefore, the height of the seat cushion can be made unaffected by the shape of the floor surface.

[Brief explanation of the drawing]

FIG. 1 is a partial cross-sectional view showing the seat device according to the embodiment of the present invention and its operation, FIG. 2 is an overall view of the device according to the embodiment, FIG. 5 is a partial sectional view showing the main parts of the apparatus of this embodiment; FIGS. 6 and 7 are perspective views showing the main parts of the apparatus of this embodiment;
FIGS. 8A and 8B are side views showing a conventional device. 10...Seat cushion, 14...Seat cushion support bracket, 20...Seat bag,
30... Sea frame, 33... Link support bracket, 38... Link rotation stopper, 40...
Link member, 41...Link rotation axis, 42...Left cushion rotation axis (seat cushion rotation axis),
104...legs.

Claims (1)

[Scope of Claims] 1. A folded state in which a seat cushion is placed on a leg and a seat frame that connects the legs, and the seat cushion is raised from a seated state toward the seat back side. In a seat device which is rotatably supported around a seat cushion rotation axis up to a point, the link support bracket fixed to the seat frame or the leg allows the seat cushion to be placed at a position spaced forward from the rear end of the seat cushion. A link rotation shaft is supported, and a seat cushion support bracket is fixed to the rear back surface of the seat cushion, and the seat cushion support bracket has a rear end of the seat cushion in the seated state and the link rotation shaft. The seat cushion rotation shaft is provided at a position between the seat cushion rotation shaft, a link member is interposed between the link rotation shaft and the seat cushion rotation shaft, and the seat cushion rotation shaft and the seat cushion rotation shaft When the link rotation shaft rotates the seat cushion to the folded state, the rear end of the seat cushion comes into contact with the seat frame and the legs, and the rotation of the seat cushion is not blocked. The link support bracket is provided with a link rotation that stops the link member from rotating forward from a position in which the link member is in an upright position when the link member is rotated about the link rotation axis. A seat device characterized by being provided with a moving stopper.