JPS6127483Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a lumbar lateral support device for a seated person.

For example, there is a demand for a vehicle seat that can support both sides of the lumbar vertebrae and increase safety according to the physique and preferences of the occupant.

The purpose of the present invention is to provide a lumbar lateral support device for a seated person that can satisfactorily support both sides of the lumbar vertebrae of a seated person and that can steplessly adjust the support pressure on both sides of the lumbar vertebrae. This will become clearer from the detailed description below with reference to the drawings.

1, 2, 3 and 4 show an embodiment of the present invention. In this embodiment, lumbar lateral support devices 3 _L and 3 _R are provided on both sides of the lower half of a back frame 1 of a seat S having a seat cushion S ₁ and a seat back S ₂ .

In this embodiment, the lumbar lateral support devices 3 _L and 3 _R include a support plate 4 attached to a plate 2 fixed to the back frame 1, and a support plate 4 attached to the plate 2 fixed to the back frame 1.
and a return spring 6 attached between the ends of each support plate 4, an air bag 8 disposed between the same plate 2 and each support plate 4, and an air pump 9 for sending air to each air bag 8. There is.

Each support plate 4 is formed in a width and shape suitable for supporting the lumbar region of the seated person, and is attached to a plate 2 fixed to the back frame 1 via a hinge 5 so as to be able to rise and fall freely.

The air bag 8 is shaped like a bellows in this embodiment, and is connected to an air pump 9 via a hose 10. Each air bag 8 has an exhaust valve 12.
are provided, and the pressure can be adjusted individually through the exhaust valves 12.

The air pump 9 is of an electric type that is activated by operating a switch 11 provided on the side portion shown in FIG. , air is sent to each air bag 8 from a separate hose 10, but one air pump 9
Two hoses may be connected, the hoses may be branched to each air bag 8 from the middle of the hose, and each branched hose may be provided with a check valve.

In both of the lumbar side support devices 3 _L and 3 _R , the portions attached to the back frame 1 are surrounded by a resilient member and skin of the same quality as the seat body.

Further, the lumbar lateral support device 3 shown in phantom lines in FIG. 3 may be a separate assembly from the seat bag body and may be separately attached to the seat bag body.

Next, the operation of the above embodiment will be explained.

The user sits on the seat S and operates the switch 11 provided on the side of the seat cushion S ₁ to start the air pump 9 and feed air into the air bags 8 on both sides to fill them up.

When the air bag 8 is fully filled, the support plate 4 is rotated through the hinge 5 in a direction to support the lumbar vertebrae of the seated person against the return spring 6.

By increasing the airbags 8 on both sides, rotating the support plate 4, and adjusting the lumbar region of the seated person to be supported from both sides according to their physique and preferences, the seated person can be provided with wide surface contact. It can be supported evenly and stably.

Further, the pressure of the air bags 8 can be adjusted steplessly, and in this embodiment, the pressure of each air bag 8 can be freely adjusted by operating the exhaust valves 12 provided on each air bag 8 on both sides. ,
It is possible to match the feeling desired by the seated person.

When returning each support plate 4, the air in each air bag 8 is discharged through an exhaust valve 12 provided on each air bag 8, and the support plate 4 is automatically returned by the action of the return spring 6.

Next, FIG. 5 shows another embodiment of the air bag portion. The air bag 13 of this embodiment is a double tube consisting of a bellows-shaped outer tube 14 and a snap-fitting inner tube 15, and the inner tube 15 is connected to an air pump. The other configurations and operations of this embodiment are similar to those of the previous embodiment.

Furthermore, in the embodiment shown in FIG. 5, the return spring 6 can be omitted if the outer tube 14 is structured to be strongly contractible and the support plate 4 is fixed to the outer tube 14.

In addition, the lumbar lateral support device configured as described above is not limited to the seat back S ₂ , but the seat cushion
It may be provided in _S1 , or may be provided in seat back _S2 and seat cushion _S1 .

The above is the configuration of one embodiment of the lumbar lateral support device according to the present invention, and according to this configuration, the support plate is attached to the both sides of the frame of at least the seat back and the seat cushion in a manner that it can be raised and lowered. , comprising an air bag disposed between the frame and each support plate, and an air pump that sends air to both air bags, and can evenly support both sides of the lumbar vertebrae of the seated person through wide surface contact, thus improving the stability of the seated person. This has the effect of significantly increasing the feeling of comfort, and since the support pressure can be adjusted steplessly, it also has the effect of making it possible to accurately match the support pressure to the preferences of the seated person.

It should be noted that the above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

Figures 1 to 4 show one embodiment of the present invention. Figure 1 is a perspective view showing an example of the mounting position, Figure 2 is a front view of the main part, and Figure 3 is a half of the main part. FIG. 4 is an explanatory view of the connections between the air bag, exhaust valve, and air pump, and FIG. 5 is a longitudinal sectional view of the air bag portion according to another embodiment of the present invention. In the figure, S...seat, _S1 ...seat cushion, S2...seat back, ₁ ...seat back frame, _3L , _3R , 3...lumbar lateral support device,
4...Support plate, 5...Hinge, 6...
Return spring, 8... Air bag, 9...
Air pump, 10...Hose, 11...Air pump switch, 12...Exhaust valve, 13...Air bag.

Claims (1)

[Scope of utility model registration request] A pair of fixing plates are fixed to both sides of the frame of at least either the seat cushion or the seat back, and a pair of support plates are attached to the pair of fixing plates so as to be able to rise and fall freely by pivot parts formed on the inner side of the fixing plates. , an air bag connected to an air pump is disposed between the fixed plate and the support plate, a return spring is stretched between an outer end of the support plate and an outer end of the fixed plate, and air is supplied to the air bag. When the air bag is fed in, the support plate rotates around the pivot portion of the fixed plate against the return spring, and when the air in the air bag is discharged, the support plate is pulled back toward the fixed plate by the return spring. A lumbar lateral support device for a seated person.