JPS5849869Y2 - Automobile safety seat with pillow - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a seat with a safety pillow for an automobile, especially a front seat, in which the safety pillow can be placed in a position that does not obstruct the front view of rear seat passengers under normal conditions.
If the seat occupant experiences severe acceleration backwards, such as in the case of a rear-end collision, the seatback tilts backward to absorb and alleviate the acceleration, and at the same time raises the safety pillow to a position approximately parallel to the seatback. The object of the present invention is to provide a seat with a safety pillow that can prevent the occupant's head from tilting backward.

Conventional car seats, especially the front seat backs, have a safety pillow placed at a position equivalent to the occupant's head, so even if the position can be adjusted vertically, the front view of the rear seat occupant is always maintained. Not only does this have the disadvantage of giving the living space a sense of great pressure, but the cushioning distance to the rear of the seatback is only a slight displacement of the cushioning material inside the seatback. In the event of a rear-end collision, the acceleration is hardly absorbed or alleviated.

Of course, even if a reclining adjuster is attached,
This only adjusts the degree of rearward inclination of the seat back during normal operation, and does not have any of the above-mentioned acceleration absorption and mitigation functions.

By adopting the configuration described in the claims for utility model registration, the present invention does not obstruct the forward view of the rear seat occupants under normal conditions, and when severe rearward acceleration is applied to the seated occupants, such as in the case of a rear-end collision, etc. When this occurs, the system absorbs and alleviates the acceleration and at the same time allows the safety pillow to be moved to the head protection position.

The configuration of the illustrated example will be explained below.

FIG. 1 and FIG. 2 are examples of implementation, and the seat back 1
is attached to the seat cushion 2 via a reclining adjuster 3 so that its inclination angle can be adjusted.

This reclining adjuster 3 supports a bracket 5 of the seat back 1 with a shaft 4 as a tilting shaft, and a first arm 6 extending toward the front side is pivotally connected to the bracket 1 of the seat cushion 2 by a shaft 8.

Further, a second extending arm 9 extends downward and slightly forward from the reclining adjuster 3, and a long hole 10 formed in the arm 9 is inserted into the protruding shaft 11 of the bracket 7. , friction plates 12, 13, compressible rubber plates 14, 15. Spring washer 16. It is tightly fastened to the bracket 7 with a lock nut 7 or the like.

The elongated hole 10 described above has an arc shape centered on the shaft 18, and a rotational moment in the direction of arrow A is applied to the reclining adjuster 3, and this moment is applied to the friction plates 12, 1.
3. Lock nut 1γ through compressible rubber plate 14°15
Only when the frictional locking force of the second extending arm 9 which is clamped to the bracket 1 is greater than that, the reclining adjuster 3 can be moved around the axis 8 within the length of the elongated hole 10. It is configured so that it can rotate in the direction of the arrow.

This reclining adjuster 3 is connected to the shaft 4 as described above.
, the seat back 1 is supported via the bracket 5, so the aforementioned rotation of the reclining adjuster 3 in the direction of arrow A will simply cause the seat back 1 to tilt in the direction of arrow A. As a result, a tilting moment is generated in the seat back 1 in the direction of arrow A, and its value is greater than the frictional force caused by the friction plates 12 and 13, the aE compressible comb plates 14 and 15, the spring washer 16, the lock nut 17, etc. , the seat back 1 will tilt.

The first extending arm 6, shaft 8, second extending arm 9 described above,
Long hole 10, protruding shaft 11. Friction plates 12, 13, iJE compressed rubber plates 14, 15. Spring washer 16. A series of members such as the lock nut 17 together constitute a braking shaft support 18 that allows the seat back 10 to rotate when a rearward tilting moment 1 of a certain value or more is applied to the seat back 1. .

A safety plug 19 is provided on the upper part of the seat back 1 so as to be tiltable.

That is, the lower end 21 of the pillow frame 20 of the safety stopper 19 is the first
It is supported by a seat back frame (not shown) by a support shaft 22 so as to be tiltable in the direction of the arrow.

On the other hand, a second support shaft 24 is provided at a position closer to the upper end 23 of the frame from the first support shaft 22 toward the pillow frame 20, and a connecting rod 25 is pivotally attached to the second support shaft 24 so as to hang down and press the button. , its lower end 26 is pivotally connected to the rear end 28 of the bracket 7 of the seat cushion 2 through a third support shaft 2T.

In the above configuration, the connection side connecting the shaft 8, the first support shaft 22, the second support shaft 24, and the third support shaft 2γ is the fixed side that connects the shaft 8 and the third support shaft 27. a position where the tilting range of the second support shaft 24 can make the pillow frame 20, that is, the safety plug 19, substantially horizontal;
The position of each axis is selected to be within two positions of the pillow frame 20, that is, the position where the safety plug 19 is raised.

The above-mentioned position where the safety plug 19 can be approximately horizontal means that the seat back 1 is maintained at the selected inclination angle by the reclining adjuster 3, as shown by the solid line in FIG.
In contrast, the safety plug 19 falls backward to an extent that it becomes approximately horizontal,
The position where the front view of the rear seat occupant is not blocked and the position where the safety plug 19 is raised is indicated by chain lines 1' and 1 in Figure 1.
As shown by 9', a safety plug 19' is located parallel to the seatback 1' which is tilted by the action of the brake shaft support 18, and is positioned in parallel to the seat back 1', which is tilted by the action of the brake shaft support 18, and is located at a position where the occupant's head can be prevented from tilting backwards. are doing.

Under normal conditions, the seat back 1 occupies the position shown by the solid line in FIG. 1 by adjusting the reclining adjuster 3.
The safety plug 19 is laid down substantially horizontally to the rear and is stationary.

In this state, if the occupant receives sudden acceleration backwards due to a rear-end collision, etc., the seat back 1 is pushed in the direction of arrow A in FIG. 2, and the seat back 1 and seat cushion 2 are A tilting moment acts on the joints of, in particular around the axis 8.

If this tilting moment exceeds a preset value for the brake shaft support 18, slippage 9 will occur in the brake shaft support 18, and the reclining adjuster 3, bracket 5 The seat back 1 including the seat back 1 is inclined in the direction of arrow A, as shown by the chain line in FIG.

This inclination causes displacement of the four-bar link described above, and the first support shaft 22 and the second support shaft 24 rotate in the directions of arrows B and C in FIG. 2, and the lower end of the pillow frame 20 21 in the direction of the arrow, the pillow frame 20, ie, the safety stopper 19, is erected as shown by the chain line 19' in FIG. 1, and placed in a position to support the occupant's head and prevent it from tilting.

The seatback 1, which is counteracted by the frictional force of the brake shaft support 18 and tilts while causing slippage on the iron part, gradually absorbs and alleviates the impact force and damps the acceleration acting on the occupant. It is something that makes you

During such movement of the seat back 1, the reclining adjuster 3 does not operate at all.

FIGS. 3 and 4 show another embodiment, and the embodiment shown in FIGS. In contrast, in the case shown in FIGS. 3 and 4, the axis of the reclining adjuster is the center of rotation when a tilting moment is applied.

As is clear from FIGS. 3 and 4, the seat back 29
The shaft 33 is attached to the bracket 32 of the seat cushion 31.
The reclining adjuster 30 is pivotally mounted on the reclining adjuster 30, and the reclining adjuster 30 is attached so that the inclination angle can be arbitrarily adjusted using its shaft 33 as a tilting axis.

On the other hand, the casing 34 of the reclining adjuster 30, which is assembled so as to behave integrally with the shaft 33, is provided with an extending arm 35 extending toward the front side. An arc-shaped long hole 36 is bored, and the long hole 36 is connected to the friction plates 37 and 38 and the compressible rubber plate 3.
9, 40, the bracket 32 via the lock nut 41, etc.
It is enclosed in a protruding shaft 42.

Now, a rotational moment is applied to the reclining adjuster 30, that is, the casing 34, in the direction of the small arrow, and this moment is applied to the aforementioned friction plate 3γ.

38, the reclining adjuster 3 is closed only when the friction locking force of the extending arm 35, which is properly tightened to the bracket 32 with the compressible rubber plates 39 and 40 and the lock nut 41, is
0 is configured to be able to rotate in the direction indicated by the arrow with respect to the bracket 32 around the shaft 33 within the range of the elongated hole 36.

Another bracket 43 is installed and fixed in parallel to the aforementioned bracket 32, and a shaft 44 supports the swinging rod 45 almost at the center, and a long hole 46 at the front end of the swinging rod 45 is provided with a long hole 46. casing 34
The distal end portion 4γ is rotatably engaged with a pin 48.

The frame of the seat back 29, in the illustrated embodiment, the bracket 49 for fixing the reclining adjuster 33 to the seat back 29 has a bell crank-shaped arm portion 50 that protrudes from the front side and an arm portion 51 that protrudes toward the rear side. The swing arm rod 52 is swingably attached to the shaft 53;
A pin 55 at the rear end of the swinging rod 45 is rotatably locked in a long hole 54 at the tip of the arm portion 50 .

The shaft 33 of the aforementioned reclining adjuster 30, the extending arm 35 of the casing 34, the protruding shaft 42, the friction plates 3γ, 38,
A series of members such as the compressible rubber plates 39 and 40 and the lock nut 41 constitute the brake shaft support 56 of the seat back 29.

A safety pillow 57 is provided at the upper end of the seat back 29 so as to be tiltable.

That is, the lower end 59 of the pillow frame 58 of the safety pillow 51
The supporting shaft 60 (not shown) is attached to the stirrer back frame.
It is supported so that it can tilt freely in the two directions indicated by the arrows.

On the other hand, a second support shaft 62 is located at a position closer to the upper end 61 of the frame from the first support shaft 60 attached to the pillow frame 58.
A connecting rod 63 is pivotally attached thereto and hangs down, and the lower end 64 of the connecting rod 63 is a third support shaft 65 that connects to the end of the arm portion 51 of the swinging arm rod 52 that protrudes toward the rear side. It is pivotally connected to the section 66.

In accordance with the above configuration, the connection side connecting the shaft 33, the first support shaft 60, the second support shaft 62, and the third support shaft 65 is the side connecting the shaft 33 and the first support shaft 60. 4 of both lever mechanisms with fixed sides
It has a link structure similar to a node link.

In this embodiment as well, the tilting range of the second support shaft 62 is at a position where the pillow frame 58, that is, the safety pillow 51 can be made approximately horizontal, as in the embodiments shown in FIGS. 1 and 2. , and the position where the pillow frame 58, ie, the safety pillow 51, is erected.

The actions and functions of each part when the occupant receives sudden acceleration backward due to an accident such as a rear-end collision are the same as those shown in FIGS. 1 and 2.

In each of the embodiments described above, the braking force of the rotary brake shaft support is obtained by the friction plate mechanism, but it is of course possible to replace it with any other mechanism that utilizes the damper damping force.
Furthermore, the seat of the present invention can be applied to any vehicle for any purpose and to any part of the seat.

The seat of the present invention has the configuration and function described above, and is capable of keeping the safety pillow in a reclined position under normal conditions, thereby preventing the backseat occupants from having a feeling of being forced by a force that obstructs their forward view. When a seated occupant receives severe acceleration backwards, the braking force of the braking shaft absorbs and alleviates the acceleration, increasing the cushioning performance of the seat. Furthermore, by utilizing the backward tilting movement of the seatback caused by a load greater than the braking force of the brake shaft support, the safety pillow from the aforementioned reclining position is erected to a position parallel to the seatback, thereby preventing the occupant's head from tilting backwards. Since it can be used for various purposes, it is effective in ensuring the safety of the crew, and
It also has the effect of being able to be added without compromising the function of a normal reclining adjuster.

[Brief explanation of the drawing]

Fig. 1 is a side view of one example of implementation, Fig. 2 is an exploded perspective view of its main parts, Fig. 3 is a side view of another implementation row, and Fig. 4 is an exploded perspective view of its main parts. . 1... Seat back, 2... Seat cushion, 1
8... Brake shaft support, 19... Safety pillow, 20... Pillow frame 21... Lower end of pillow frame, 22...
First support shaft, 24...Second support shaft, 25...Connection rod, 26...Lower end of connection rod, 21...Third support shaft.

Claims (1)

[Scope of utility model registration request] The safety pillow is supported by a braking shaft support that allows rotation only when a backward tilting moment of a certain value or more is applied to the seat cushion, and the safety pillow is supported by a first support shaft at the lower end of the pillow frame. As a result, the lower end of the connecting rod, which is tiltably supported on the upper part of the seat back and is pivotally connected to the second support shaft at a position closer to the upper end side than the support shaft of the pillow frame and hangs down, is connected to the third support shaft. The support shaft is pivotally connected to a ring member forming a link between the brake shaft support and the first brake shaft support. The connecting sides with the second and third support shafts constitute a four-bar link, and the tilting range of the second support shaft is a rest position where the safety pillow is approximately horizontal, and a seat where the safety pillow is tilted backward. A safety seat with a pillow for an automobile, characterized in that it has a range of two positions: a back position and an operating position standing up substantially parallel to the back.