JPS62102705A - Seat apparatus for car - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) This invention relates to an automatic heavy-duty seat used for a seat cushion or a seat back, and particularly for pressing and adjusting the lumbar vertebrae of a person sitting on the seat! This article describes an automobile seat device that can be used as a seat device.

(Prior Art) Self-help vehicle seats have conventionally been equipped with a lumbar support mechanism that presses on the lumbar region of a seated person, a thigh support mechanism that presses on the thighs of a seated person, etc. Various devices have been developed.

In such an automobile seat device, for example, as shown in FIG. 8, one end is rotatably attached to portions a (hereinafter referred to as side frames) on both sides of a seat cushion frame or a seat pack frame. , a pair of first arms C rotated by a rotatable cam b; and a pair of second arms that rotate while engaging with the first arm C.

There are known configurations that include the following. In this automobile seat device, the cam b is biased by an operation not shown in the drawings, such as 7, to bias the cam b, and the S spring d, which is stretched over the second arm e, is moved upward via the first arm C. It is moved to press the lumbar vertebrae and thighs of the seated person from the inside of the seat.

[Problem to be solved]

However, in an automobile seat device with such a configuration, the pressing part against the seated person is always at a substantially constant position, so the gears can be adjusted in a fine and continuous manner according to various physiques and individual preferences. Pressure adjustment is not possible.

Therefore, in view of the above-mentioned conventional drawbacks, the present invention provides an automobile seat device that can freely and steplessly adjust its pressing position with respect to the vertebral region, buttocks, thighs, etc. The purpose is to

(Means for Solving the Problems) The present invention is an automobile seat device used for a seat cushion or a seat back, which comprises a drive means for rotating a rotating shaft and a rotational force of the drive means. a clutch mechanism that simultaneously or selectively transmits the rotational force of each rotational shaft; a rotational force conversion means that transmits the rotational force of each rotational shaft transmitted by the clutch mechanism to each slide shaft; A pair of left and right three-point connecting links each consisting of a first and a second arm whose proximal ends move along the axial direction of the slide shaft by the rotational force of the slide shaft, and whose distal ends are rotatably connected to each other. The device is provided with a link system in which the left and right first arms or second arms are respectively interlocked with each other, and a pressing body installed between the three-point connecting links.

(Function) In the automobile seat device of the present invention, the drive means simultaneously or selectively rotates the slide shaft via the rotational force converting means, and the rotation of the slide shaft causes the first and second arms to be rotated, respectively. The first arm or the second arm on the left and right sides of the pair of left and right three-point connecting links can be moved freely in a direction perpendicular to the width direction of the seat (hereinafter referred to as the seat length direction) while interlocking each other. In other words, it is possible to selectively move only one side of the left and right first arms or the second arms, or to move the left and right first and second arms simultaneously. This allows the pressing position to be freely and steplessly adjusted according to the various physiques and preferences of the seated person.

(Example) Hereinafter, an example of the present invention will be described with reference to the accompanying drawings.

1 and 2 show an automobile seat device according to the present invention. This automobile seat device is attached to the seat back frame 1 side and used as a lumbar support mechanism, and the driving means is used as a lumbar support mechanism. 2, a clutch machine vI43, a rotational force converting means 4, a link system 5, and a pressing body 6.

Although the driving means 2 is constituted by a manual operation knob in this embodiment, it is of course possible to automate the operation by using a motor or the like, for example. This operating knob 2 has an arc-shaped guide 1 formed so that the depth of the groove gradually increases on the inner surface side.
A pair of rotating shafts 12a are provided, and one end side of a rotating shaft 7 is fixed to the center part, and the other end side of the rotating shaft 7 is rotatably attached to the side frame 1a on the side side of the seat back frame 1. ('J has been kicked.

The clutch mechanism 3 is for transmitting the rotational force of the drive means 2 (fil) to the rotational force converter [4 side simultaneously or selectively only to one side. As shown in the figure and FIG. 3, a rotating body 8 provided with a pair of pins 8a that engage with guide grooves 28, a sector gear 9 fixed to this rotating body 8, and this sector gear 9 selectively mesh with each other. The rotating body 8 is composed of a first gear 10a, a second gear 10b, and a first rotating shaft 11a and a second rotating shaft 11b, which correspond to the rotating shafts of the first gear 10a and the second gear 10b. A connecting shaft 9a formed on the sector gear 9 side rotates integrally with the sector gear 9 side, and these rotary bodies 8.
The rotating shaft 7 rotatably passes through the center of the connecting shaft 9a and the sector gear 9. As shown in FIG. 4, these rotating body 8 and sector gear 9 move on the rotating shaft 7 to the outermost position near the operating knob 2 when the bin 8a engages with the deepest part of the guide groove 2a. When the bin 8a engages with the remaining portion of the guide groove 28, it moves to the innermost position as shown in FIG. A spring 12 is disposed between the side frame 1a on the inner side of the sector gear 9 and the sector gear 9, and the elastic force of the spring 12 constantly presses the rotating body 8 and the sector gear 9 toward the operation knob 2. ing. First rotating shaft 11
a and the 20th transfer shaft 11b are rotatably attached to both support frames 13 and 14 through the side frame 1a. Note that the clutch device 113 of this embodiment transmits the rotational force of the operation knob 2 to either the first gear 10a or the second gear 10b, and rotates the first and second rotating shafts 11a.
, 11b is selectively rotated. The first gear is simultaneously transmitted to the second gear. The configuration may be such that the second rotating shaft can also be rotated at the same time.

The rotational force converting means 4 separately converts the rotational force of the clutch mechanism 3fllll into the first and second clutch mechanisms. Second slide shaft 17a, 1
7b, and in this embodiment, the first. It is comprised of worm gears 15 formed on the second rotating shafts 11a and 11b, respectively, and a wheel gear 16 that meshes with these worm gears 15 and rotates. Each of these wheel gears 16 has the first one as its rotation axis. Second slide shafts 17a, 17b are attached, and these first slide shafts 17a, 17b are attached. Second
The slide shafts 17a and 17b are threaded in opposite directions, for example, so as to have a right-hand thread and a left-hand thread, respectively. Further, on the other side arm (circuit) side, there are respectively first and second side arms. First and second slide shafts 17c and 17d, which rotate in conjunction with the second slide shafts 17a and 17b, are provided via flexible wires 18 and 19, respectively. Note that, as the rotational force converting means according to the present invention, it is of course possible to use, for example, a babel gear or the like in addition to the above-mentioned ones.

The link system 5 is composed of three-point connecting links 5a and 5L+ provided on both side frames 1a, respectively, and the three-point connecting link 5a provided on the rotational force converting means 4 side.
1st. This is for freely moving the pressing body 6 in a direction substantially perpendicular to the sheet (hereinafter referred to as the sheet perpendicular direction) and in the sheet length direction while moving along the axial direction of the second slide shafts 17a and 17b. There are two arms, a first arm 20a and a second arm 20b. The first of these. Second arm 20a.

20b, the base end side is the first. 2nd slide shaft 1
7a and 17b mesh with each other. 2nd screw nut 21
8.21b, and the distal ends thereof are rotatably connected to each other. Each of the screw nuts 21a and 21b has female threads cut in opposite directions on the inner surface thereof, for example, so as to have a right-hand thread and a left-hand thread, and a portion of the outer surface thereof is threaded as shown in FIG. As shown in FIG.
1Xib, thereby allowing them to move on the slide shafts 17a and 17b, respectively, while maintaining a constant posture at all times. Note that the three-point connecting link 5b on the other side has the same configuration, that is, the third arm 200.
．． 20d, and these arms 20c
, 20d has the 1st and 2nd screw nuts 2 on the III end side.
1c and 21d are rotatably attached.

The pressing body 6 is constructed across the same dirt floor as the three-point connecting links 5 on both sides, and in this embodiment is constructed of an S spring. As explained above, this S spring can be freely moved in the vertical direction of the seat and in the longitudinal direction of the seat by moving the three-point connecting link 5. It is now possible to press the button at a position that suits each person's preference, and by adjusting the pressing force steplessly.

The automobile seat device of this embodiment is used as a bar support by attaching it to the seat back side to press the lumbar region, but it can also be attached to the seat cushion side to adjust seating pressure and use it as a thigh support. It is also possible.

Therefore, according to the automobile seat device according to this embodiment, for example, as shown in FIG.
By transmitting rotational force to the first arm 20a
, with the 2Oc side aligned in the sheet length direction in Fig. 7 (b'
), the S spring 6 can be strongly pressed by the lumbar vertebrae of the four occupants through the seat.

Further, as shown in FIG. 7(C), by rotating and operating the operating knob 2 from the state of FIG. 7(b) to transmit the rotational force to the second gear 10b, the second arm 20b, 2
Move the Od side downward in the figure along the sheet quality direction.
It can be adjusted to the lower side of the lumbar region of the seated person or for children.

Further, as shown in FIG. 7(b), by rotating and operating the operation knob 2 from the state of FIG. 7(C) to transmit the rotational force to the first gear 10a side, the first arm 20a
, 2Oc side can be moved upward in the figure along the sheet length direction to weaken the pressing force.

〔effect〕

As described above, according to the automobile seat device according to the present invention, the first... Since it is possible to move only one side of the back of the second arm or both arms together, the pressing body attached to these three-point connecting links can be moved in the seat vertical direction and the seat length direction. In other words, it is possible to make fine-grained UA adjustment according to the physique and preferences of each seated person, which has an extremely large practical effect.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing an automobile seat device according to the present invention, FIG. 2 is a schematic perspective view showing a clutch mechanism and rotational force converting means of the automobile seat device according to the invention, and FIG. 3 is a schematic perspective view showing the automobile seat device according to the invention. FIG. 4 and FIG. 5 are plan views showing the action of the clutch mechanism of the vehicle seat device according to the present invention, and FIG. 6 is a plan view showing the clutch mechanism of the vehicle seat device according to the present invention. 7(a) to (d) are explanatory diagrams illustrating the operation of the automobile seat device according to the present invention, and FIG. FIG. 2 is a schematic side view showing a conventional lumbar support mechanism. 2... Operating means (operating knob), 3...
Clutch mechanism, 4...Rotational force conversion means, 5...Link system, 5a, 5b...3-point connection link, 6...
... Pressing body, 7 ... Rotating shaft, 118.11b ... (1st and 2nd) rotating shaft, 17a, 1
7b...(1st, 2nd) slide shaft, 20a
, 20c...First arm, 20t1.20d.
...Second arm.

Claims (1)

[Claims] 1. An automobile seat device used for a seat cushion or a seat back, comprising: a drive means for rotating a rotating shaft; and a rotational force of the drive means transmitted simultaneously or selectively. a clutch mechanism for rotating each rotating shaft; a rotating force converting means for transmitting the rotating force of each rotating shaft transmitted by the clutch mechanism to each slide shaft; A pair of left and right three-point connecting links are provided, each consisting of a first arm and a second arm, whose proximal ends move along the axial direction of the slide shaft, and whose distal ends are rotatably connected to each other. An automobile seat device comprising: a link system in which the first arms or the second arms interlock with each other; and a pressing body installed between the three-point connecting links.