JPS6110524Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for supporting the thighs of an occupant seated on an automobile seat.

If an automobile seat is equipped with a device for adjusting the pressure applied to the areas corresponding to the thighs of the occupant, it can be conveniently adjusted according to whether the vehicle is driving for sporty driving or for family driving, making the ride more comfortable. However, a conventional device of this type has a cylinder disposed at the bottom of the seat cushion, one end of the thigh support is supported by a piston that slides within the cylinder, and the other end is movable in the width direction of the seat cushion. However, this structure is complicated and expensive, and is not suitable for general public cars.

In view of the above drawbacks, the present invention provides a thigh support device for an automobile seat that is simple in structure, functions reliably, and is inexpensive.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. 1 to 3, 1 is a seat equipped with the device of the present invention, and a seat cushion 2 whose lower surface is fixed to the vehicle body (not shown) is attached at a predetermined angle to the rear side of the seat cushion 2. It consists of a seat bag 30 that stands upright. 3 is a seat cushion frame that forms the framework of seat cushion 2. Reference numeral 5 denotes a base body having a roughly shaped cross section, and has hanging walls 6, 6 extending upwardly, through which one engaging end 8 of a support core 7 (to be described later) is inserted. Equipped with rotatable through holes 6a, 6a,
The bottom surface is fixed to both sides of the seat cushion frame 3. Reference numeral 7 denotes a supporting core that forms the core material of the bank portions (swelled portions) on both sides of the seat cushion 2, and one engaging end portion 8 is connected to the hanging walls 6, 6 of the base body 5.
The other engaging end 9 is inserted into the through holes 6a, 6a and rotatably supported, and the other engaging end 9 is connected to the upright wall 4 erected on the front side of the seat cushion frame 3.
is supported by. Reference numeral 10 denotes a torsion coil spring serving as a thigh support, and a hooking portion 1 that hooks onto the core 7.
2, a torsion coil part 13 surrounding the engagement end 8 of the support core 7, and a short arm part 14 having an engagement part 15 that abuts an eccentric cam 16, which will be described later. Reference numeral 16 denotes an eccentric cam that presses the engaging portion 15 of the short arm portion 14 in stages, and bushes 23 are fitted in the width direction of the seat 1 on both sides of the seat cushion frame 3.
In addition to being integrated with the handle shaft 24 inserted into the handle shaft 24 with an engaging pin 27, the first engaging portion 17, the second engaging portion 18, and the second engaging portion 18 are formed at different distances from the axis of the handle shaft 24. The eccentric cam 16 has three engaging portions 19 and a fourth engaging portion 20, and the eccentric cam 16 rotates while the contact portions 21 and 22 are in contact with the seat cushion frame 3. The first engaging portion 17, the second engaging portion 18,
The third engaging portion 19 and the fourth engaging portion 20 correspond to the engaging portion 15 of the short arm portion 14 of the torsion coil spring 10, and gradually increase the amount of pressure applied to the torsion coil spring 10. There is. Reference numeral 26 denotes an operation handle that integrates the eccentric cam 16 and is fixed to one end of the handle shaft 24 with a screw 29, and is disposed on the side of the seat cushion 2. 28 is a retaining ring, which is attached to the ring groove 25 of the handle shaft 24;
25 so that the handle shaft 24 does not come off from the seat cushion frame 3 in the axial direction.

With the above configuration, the operation will be explained as follows: When an occupant sits on the seat 1 and rotates the operation handle 26 disposed on the side of the seat cushion 2 in the direction of the arrow A in FIG. As the eccentric cam 26 rotates, the second engaging part 18 that has moved from the first engaging part 17 of the eccentric cam 16 presses the engaging part 15 of the short arm part 14 of the torsion coil spring 10.
The amount of pressure applied to the torsion coil spring 10 increases, and the long arm portion 11 of the torsion coil spring 10 is pushed inward of the seat cushion 2. As the support core 7, which is engaged with the engagement portion 12 of the long arm portion 11, moves inward, the seat cushion 2
In other words, the pinching force that pushes the occupant's thighs inward increases. If the operating handle 26 is further rotated in the direction of arrow A in FIG.
6 from the second engaging part 17 to the third engaging part 19, and the third engaging part 19 and the torsion coil spring 10
The engagement portion 15 of the short arm portion 14 of the torsion coil spring 10 corresponds to the engagement portion 15 of the torsion coil spring 10, and the long arm portion 11 of the torsion coil spring 10 is pushed inward of the seat cushion 2 in the same manner as described above, so that the thigh clamping support force is will further increase. Subsequently, if the operating handle 26 is further rotated in the direction of arrow A in FIG. The supporting capacity is further increased. On the other hand, if it is desired to reduce the support force of the thigh between the thighs, this can be easily done by reversing the procedure described above.

As explained above, the present invention includes hanging walls 6 extending upwardly on the sides of the seat cushion frame 3.
6 is fixed to the base 5, and the seat cushion 2 is fixed.
One engaging end 8 of the supporting core 7 forming the core material of the bank is supported by the hanging walls 6, 6, and the other engaging end 9 is supported by the seat cushion frame 3, An eccentric cam 16 and an operating handle 26 are fixed to a handle shaft 24 supported perpendicularly to the engaging end 8, and one of the thigh-snapping supports 10 is engaged with the supporting core 7, and the other is By arranging the eccentric cam 16 to correspond to the eccentric cam 16, it is possible to easily adjust the thigh support force by rotating the operating handle 26 in the front-rear direction of the seat 1. This structure reliably performs the function of adjusting the support force between the thighs of the occupant seated on the seat, and it can be manufactured at a low cost, making it highly practical.

[Brief explanation of the drawing]

Figures 1 to 3 show the device of the present invention. Figure 1 is a perspective view of the seat 1 equipped with the device, Figure 2 is an exploded view of its main parts, and Figure 3 shows the eccentric cam 16 and the thigh. FIG. 2 is a schematic cross-sectional view showing a state of contact with a torsion coil spring 10 serving as a support. 1... Sheet, 2... Seat cushion, 3...
... Seat cushion frame, 5... Base, 6...
...hanging wall, 7...support core, 8...engaging end, 9...
...Engagement end portion, 10...Torsion coil spring serving as thigh support, 16...Eccentric cam, 24...Handle shaft, 26...Operating handle.

Claims (1)

[Scope of utility model registration request] A base body having hanging walls extending upward is fixed to both sides of the seat cushion frame, and one engaging end of a support core forming the core material of the bank of the seat cushion is attached to the hanging wall when the vehicle is moving. an engagement member that is supported in the traveling direction, has its other engagement end supported by the seat cushion frame in the vehicle backward direction such that the two engagement ends face each other, and is supported by the hanging wall; An eccentric cam and an operating handle are fixed to a handle shaft supported in the width direction of the seat at the end, and one of the thigh supports is engaged with the support core, and the other of the thigh supports is attached to the seat so as to correspond to the eccentric cam. By supporting and arranging the seat so that it can rotate in the width direction, it is possible to adjust the support force by inserting the thigh into the seat as the operating handle rotates in the front-rear direction of the seat. A thigh support device for automobile seats.