JPH0617632Y2 - Suspension seat - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a suspension seat that absorbs vibrations and shocks.

[Prior Art] Reclining and sliding mechanisms are generally adopted in vehicle seats, so that the seat can be adjusted to a desired state to obtain an appropriate sitting posture according to the physique and taste of an occupant. There is.

Furthermore, recently, a damper mechanism that absorbs and absorbs vibrations transmitted from the vehicle body has been adopted, and a suspension seat that enables a more comfortable sitting state has been put into practical use.

FIG. 4 shows an example of a conventional suspension seat.

The suspension seat in the figure is a seat cushion 10.
1 and a seat body 103 including a seat back 102
And a holding mechanism 105 interposed between the seat cushion 101 and the vehicle body 104 to elastically support the seat body 103.
It has and.

The holding mechanism 105 includes a pair of link arms pivotally supported in a substantially X shape and a torsion bar hung between the link arms. is doing. Further, a damper mechanism such as a shock absorber is incorporated in the holding mechanism 105, and shocks, vibrations, etc. transmitted from the vehicle body 104 are alleviated and absorbed by the holding mechanism 6 and the damper mechanism.

[Problems to be solved by the invention] By the way, in addition to the suspension mechanism, an adjustment mechanism of the seat itself such as a lumbar, a side, and a side support is related to the seating comfort factor. However, the conventional suspension mechanism is designed to be completely independent of the adjustment mechanism of the seat itself.

On the other hand, it has been found that, for example, when traveling for a long distance, it may be less tired to tilt the seat cushion 2 appropriately so that the crotch side is relatively higher than the hip side.

Therefore, as a result of various studies, the applicant of the present invention has confirmed that it is possible to further improve the ride comfort of the seat by utilizing the suspension seat holding mechanism and making technical improvements thereto. The present invention was obtained.

It is an object of the present invention to provide a suspension seat in which a seat cushion is tilted by utilizing the elastic supporting force of a suspension so as to have a function of supporting a side.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a suspension seat including a holding mechanism that is disposed between a seat cushion of a seat body and a vehicle body and elastically supports the seat body. In the above-mentioned holding mechanism, the lower frame fixed to the vehicle body side, the rear side of the seat cushion are connected via a hinge, and the front side of the seat cushion is connected via a link mechanism. A frame, a first elastic support member interposed between the upper frame and the lower frame, and between the seat cushion and the lower frame, and normally biases the seat cushion in a contracted state in a lifting direction, Push up the front end of the seat cushion via the link mechanism and tilt the seat cushion with the hinge as a fulcrum. Defeatable second
And an elastic supporting member.

[Operation] According to the present invention having the above configuration, the vibration and the shock transmitted from the vehicle body are alleviated and absorbed by the first elastic support member and the second elastic support member.

Further, the seat cushion is biased upward by the second elastic support member, and the front side of the seat cushion is lifted and tilted with the hinge serving as a fulcrum due to the operation of the link mechanism and the hinge with respect to the upper frame.
The seat holding state is similar to the size support function.

[Embodiment] An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side view showing a suspension seat to which the present invention is applied, and FIG. 2 is a perspective view showing an essential part of the seat.

The suspension seat shown in FIG. 1 includes a seat body 3 including a seat cushion 1 and a seat back 2, and a holding mechanism 6 installed between the seat cushion 1 and the vehicle body 4.
Consists of.

The holding mechanism 6 serves as a frame-shaped lower frame 10 fixed to the vehicle body 4, an upper frame 12 that holds the seat cushion 1, and a first elastic support member interposed between the frames 10 and 12 at the four corners. Energy absorber 11
And an energy absorber 13 as a second elastic support member provided between the frames 10 and 12 and substantially in the center.

The lower frame 10 and the upper frame 12 are substantially frame-shaped as in the conventional case, and the seat cushion 1 is mounted on the upper frame 12 via the tilting mechanism 14.

The tilting mechanism 14 includes a rear bracket 15 and a front bracket 17, which are provided at four corners of the upper frame 12 so as to be opposed to each other, a shaft 16 rotatably installed between the rear brackets 15, and a front bracket 17. Pin 1 in between
8 and a shaft 20 erected vertically via a link 19, a connecting bracket 22 hung between the shafts 16 and 20 and connected to the upper end of the energy absorber 13, and a shaft 20 swinging. The operation member 23 for locking the movement is provided.

Links 19 are fixed to both ends of the shaft 20. A guide groove 25 is formed on the lower side of the link 19 to which the shaft 20 is coupled. And the bracket 1
By fitting the guide groove 25 to the pin 18 projectingly provided on the shaft 7, the shaft 20 is pivotally supported vertically along the pin 18 between the brackets 17 into which the guide groove 25 is fitted.

Further, the shaft 20 has an operating member 23 that is engaged with and disengaged from the upper frame 23, and is locked to the upper frame 12 at the lowermost position and held at substantially the same height as the shaft 16. The operating member 23 has a hook formed at its tip so that it can be hooked and engaged with the side of the upper frame 23, and the base is rotatably joined to the shaft 20.

Although not shown in the drawing, the seat cushion 1
Is arranged on the upper rail 12 and is connected and fixed to both shafts 16 and 20 by appropriate means.

The energy absorber 11 is made of, for example, hard rubber, and its upper and lower portions are fixed to the frames 10 and 12.

The energy absorber 13 functions as a suspension in a state where it can expand and contract and contracts against the biasing force, but it may be composed of, for example, a compression spring.

Further, the upper part of the energy absorber 13 has a connecting bracket 20.
To an elastic body 21. In this case, the energy absorber 13 is attached between the lower frame 10 and the connecting bracket 20 in a contracted state against the biasing force, and extends upward when the operating member 23 is unlocked. That is, the energy absorber 13 is used as a drive source of the tilting mechanism 14.

According to the above configuration, in the normal state, as shown in FIG. 3A, the operation member 23 is hooked and engaged with the front side portion of the upper frame 23. Therefore, the vibrations, impacts, etc. transmitted from the vehicle body 4 are alleviated and absorbed by the energy absorbers 11 and 13, and a good suspension function is exhibited.

Further, for example, when the seat cushion 1 is desired to be tilted during long-distance traveling, the operation member 23 is pulled and the engagement with the upper ram 23 is released, as shown in FIG.

As a result, the connecting bracket 22 is connected to the energy absorber 1
As a result of 3 extending upward, the front side stands up with the shaft 16 as a hinge. Due to this rising, the front portion of the seat cushion 1 is lifted and tilted, and the seat cushion 1 is in a seat holding state similar to the side support function.

As described above, in the suspension seat of the present invention, since the seat cushion 1 or the seat body 3 can be tilted by utilizing the holding function 6, various seat holding states can be obtained at low cost.

[Advantages of the Invention] As is apparent from the above-described embodiments, the suspension seat according to the present invention is provided between the upper frame and the lower frame with respect to the conventional holding mechanism including the X-shaped link arm and the torsion bar. Since the elastic supporting force is obtained by the first elastic supporting member and the second elastic supporting member, it is possible to reduce the size and the weight.

In addition, the present invention, along with the original suspension function,
The seat cushion can be brought into a seat holding state similar to a side support function by lifting and tilting the front side via the link mechanism with the hinge serving as a fulcrum. In this case, since only the second elastic support member is used as a drive source for tilting the seat cushion, the second elastic support member is simply used, the cost is achieved, and the riding comfort of the seat can be further improved in addition to the suspension function.

[Brief description of drawings]

FIG. 1 is a side view of a suspension seat showing an embodiment of the present invention, FIG. 2 is a perspective view showing an essential part of the seat, and FIG.
Figure (a) is a side view of a main part showing a normal use state of the seat,
FIG. 3 (b) is a side view of a main portion showing the seat tilted state,
FIG. 4 is a schematic view showing the structure of a conventional suspension seat. 1 ... Seat cushion 3 ... Seat body 4 ... Car body 6 ... Holding mechanism 10 ... Lower frame 11 ... Energy absorber (first elastic support member) 12 ... Upper frame 13 ... Energy absorber ( Second elastic support member)

Claims (1)

[Scope of utility model registration request] 1. A suspension seat provided with a holding mechanism which is disposed between a seat cushion of a seat body and a vehicle body and elastically supports the seat body, wherein the holding mechanism is fixed to the vehicle body side. And a rear side of the seat cushion is connected via a hinge, and a front side of the seat cushion is connected via a link mechanism, and a first frame interposed between the upper frame and the lower frame. Between the elastic support member 1 and the seat cushion and the lower frame, the seat cushion is normally urged in a contracted state in the direction of lifting, and the front end portion of the seat cushion is pushed up via the link mechanism to The seat cushion includes a second elastic support member that can be tilted around the hinge as a fulcrum. Suspension seat.