JPH035146Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat with a suspension device for a vehicle or the like, and more particularly to a belt anchor mechanism for fastening a seat belt for restraining and holding a seated person.

[Prior Art] Vehicles, such as automobiles, are equipped with a suspension device that elastically supports the seat between the seat and the floor in order to absorb vibrations and shocks when driving on rough roads. There is.

This suspension device supports an upper frame attached to the underside of the seat so as to be movable in the vertical direction via an X-shaped link with respect to a lower frame fixed to the floor, and between the X-shaped link and the frame. A spring is interposed between the two frames, and a shock absorber is interposed between the two frames, and the suspension operation is performed by the spring and the shock absorber.

A seatbelt is also worn on a seat with a suspension device, but if the belt anchor is fixed to the seat or the upper frame of the suspension device, it will attach directly to the suspension device in the event of a collision. There is a risk that the seat belt will be damaged due to the recoil of the seated person, and the seated person may be ejected.Furthermore, if the belt anchor is fixed to the floor side, the seat belt may unnecessarily tighten the seat belt due to the operation of the suspension device even during normal driving. Conventionally, the primary belt anchor was fixed to the seat or upper frame, the secondary belt anchor was fixed to the floor side, and the secondary belt anchor and the primary belt anchor were connected by the secondary belt. The vehicle was constructed so that the tensile load due to the reaction of the seated person acting on the seat belt during a collision is received on the floor side.

[Problem that the invention attempts to solve]

As described above, in conventional seats with suspension devices, the secondary belt anchor and secondary belt are used to attach the seat belt, making the configuration complicated. It is necessary to install the secondary belt with slack in consideration of the change in length due to the amount of movement of the slide rail, and the amount of slack in this secondary belt varies depending on the position of the front and back of the seat, making it difficult for the seated person to sit comfortably. There is.

In view of this, the present invention provides a seat with a suspension device that has a simple configuration and allows a seated person to be reliably and safely restrained by a seatbelt.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a seat with a suspension device in which the suspension device is attached to the seat via the slide rail of the seat adjuster, and a seat belt is tied to the side of the seat. The belt anchor and the lower end portion are extended downward to fix the hook-shaped engaging member, and the engaging member is slidable in the front and back direction on the upper frame of the suspension device, and is hook-shaped in the upward direction. An engagement guide member that is engaged with the suspension device is fixed, and a link piece is rotatably attached to one of the upper frame and the lower frame of the suspension device, and the link piece is rotatably attached to the other one of the upper frame and the lower frame of the suspension device. It is constructed by engaging the free end portions so as to be movable in the front-back direction.

[Effect]

With this configuration, in the event of a collision, the tensile load applied to the seat belt due to the reaction of the occupant is transferred from the belt anchor to the engagement portion between the seat side engagement member and the suspension device side engagement guide member, and the upper and lower frames. The seated person is reliably restrained and held on the seat without any tensile load being applied to the seat adjuster and suspension device by being received on the floor side through the connecting portion formed by the link piece between them.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes an automobile seat consisting of a seat cushion 2 and a seat back 3. A suspension device 6 is provided on the lower surface side of the seat cushion 2 via a slide rail 5 of a seat adjuster 4. It is fixed on the vehicle body floor surface F through the vehicle body floor surface F.

The seat back 3 is connected to the seat cushion 2 by a reclining device 7 so as to be able to adjust its inclination angle, and the upper rail 5a of the slide rail 5 is fixed to the lower surface of the cushion frame 2a of the seat cushion 2.
b is the upper frame 8 of the suspension device 6
It is fixed on a bracket 9 fixed to the side surface of.

Similar to the well-known suspension device 6, the upper frame 8 is attached to the support link pieces 11, 1 for the lower frame 10 which is fixed to the floor surface F side of the vehicle body.
2 is supported movably in the vertical direction by an X-shaped link 13 which is pivotally connected in a cross shape, and one frame, for example, the upper frame 8, and one link piece of the X-shaped link 13, for example, the movable side end of the link piece 11. A tension coil spring 14 is stretched between the upper and lower frames 8 and 10, and a shock absorber 15 is interposed between the upper and lower frames 8 and 10.

Note that guide rails 16 having a U-shaped cross section are provided on both sides of the upper frame 8 and the lower frame 10.
and 17 are arranged in the front-rear direction, and the support link pieces 11 described above are attached to the respective guide rails 16 and 17.
Id rollers 18 and 19 are rotatably inserted into the movable end portions of the rollers 18 and 12, and the shafts 20 and 21 of the rollers 18 and 19 connect the connecting pipe members 22 and 12 that connect the link pieces on both sides. 23 and is connected to the roller of the support link piece on the other side.

In this example, the reclining device 7
A belt anchor 24 is integrally provided on the upper part of the base plate 7a fixed to the seat cushion 2, and the lower part of the base plate 7a has a flange stopper part 25 extending downward from the seat cushion 2 and having a U-shaped cross section. is formed,
A connecting belt 26 is tied to the belt anchor 24, and the free end of a seat belt 27 that restrains a seated person is engaged with the connecting belt 26. Note that the base end portion of the seat belt 27 is wrapped around a retractor and fixed to a center pillar of the vehicle body, etc., similarly to a well-known belt.

At the side surface of the upper frame 8 of the suspension device 6, that is, at the outer end of the bracket 9, there is a flange stopper part 28 having an inverted U-shaped cross section so as to correspond to the above-mentioned flange stopper part 25 in a vertically hooked manner. A guide bracket 29 is fixed horizontally in the front-rear direction, and the rear half of the guide bracket 29 is formed wide so that the wide part 29
A sliding engagement hole 30 that is long in the front-rear direction is formed in a.

Further, a connecting link piece 31 is rotatably supported in the front and rear direction by a stepped shaft pin 32 at the rear of the side surface of the lower frame 10.
An engagement pin 33 is fixed to the free end of the guide bracket 29. In order to prevent the pin 33 from slipping out of the sliding engagement hole 30, the nut 34 is screwed into the threaded end portion 33a while the pin 33 is inserted into the engagement hole 30.

Next, the operation of the seat with the suspension device of this example configured as described above will be explained.

In the normal state when a seated person is seated on the seat 1, the flange stopper part 25 of the base plate 7a of the reclining device 7 and the flange stopper part 28 of the guide bracket 29 on the suspension device 6 side have their edges bent inside the other. It is in a hook-like engagement state that lightly touches the bottom, and the seat 1
the slide rail 5 of the seat adjuster 4 relative to the suspension device 6, that is, the upper rail 5.
It is movable in the front-rear direction via the sliding contact portion between a and the lower rail 5b, and the front-rear position can be adjusted.

With the front and rear positions of the seat 1 adjusted in this way, the seated person can place the seat belt 2 on his or her body as usual.
7 and attach the free end to the belt anchor 24.
By engaging with the connecting belt 26 tied to the seat 1, the seat 1 enters a traveling state in which it is restrained relative to the seat 1.

When a large impact occurs due to a collision or the like in this normal driving condition, a tensile load is applied to the seat belt 27 due to the reaction of the seated person, the seat cushion 2 is lifted, and the flange stopper portion 25 on the reclining device 7 side is lifted. Flange stopper part 2 on the suspension device 6 side
8 is strongly engaged. For this reason, the rear part of the upper frame 8 of this suspension device 6 also tries to lift up together with the seat cushion 2;
Since the upper frame 8 is connected to the lower frame 10 by the connecting link piece 31, upward movement is almost completely suppressed, and the belt anchor 24 is connected to the vehicle body via both flange stopper parts 25, 28 and the connecting link piece 31. The seat belt 27 is fixed to the floor F, the tensile load applied to the seat belt 27 is received by the floor, and the seated person is reliably restrained and safely protected.

Furthermore, even when the front and rear positions of the seat 1 are changed, only the engagement position of the flange stopper part 25 on the reclining device 7 side with the flange stopper part 28 on the suspension device 6 side changes, and both flange stopper parts are fixed when an impact occurs. par part 25,
28 does not change, and when the suspension device 6 moves up and down, the engagement position of the link piece 31 with respect to the sliding engagement hole 30 of the guide bracket 29 on the upper frame 8 side changes. The seat can be restrained and held without causing any loosening as would be the case with the use of wires or wires, and without giving the seated person a sense of instability.

In the above configuration, the connecting link piece 31 that connects the upper frame 8 and lower frame 10 of the suspension device 6 is pivotally attached to the upper frame 8 side, and has a sliding engagement hole formed in the lower frame 10 side. The belt anchor 24 and the flange stopper part 25 on the seat 1 side are not formed on the base plate 7a of the reclining device 7, but are formed separately and fixed to the seat cushion 2. The bent shapes of the flange stopper portions 25 and 28 may also be changed in various ways.

[Effect of idea]

As described above, according to the present invention, in a seat with a suspension device, the seat and the upper frame of the suspension device are provided with an engagement member that is slidable in the front-rear direction and engaged in the vertical direction, and By connecting the upper frame and lower frame of the suspension device with a connecting link piece, the tensile load applied to the seat belt due to the reaction of the occupant in the event of a collision is absorbed by the engaging portions of both engaging members and the connecting link piece. Since it is configured so that it can be received on the floor side through the seat belt, the seated person can be securely restrained and held against the seat, further improving safety. Also, since the connecting link piece is used as a secondary belt anchor, There is no loosening that occurs when belts or wires are used as in the past, and the seated person has the advantage of not feeling uneasy and having a comfortable sitting feeling.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of the seat according to the present invention;
FIG. 2 is an enlarged longitudinal cross-sectional view of the belt anchor mechanism of the seat, FIG. 3 is a partially omitted side view of the seat according to the present invention, and FIG. 4 is a side view of the seat in a lowered state. In the figure, 1 is a seat, 2 is a seat cushion, 5 is a slide rail, 6 is a suspension device, 7 is a reclining device, 7a is a base plate, 8
is upper frame, 10 is lower frame, 2
4 is a belt anchor, 25 is a flange stopper portion as an engaging member, 27 is a seat belt, 28
and 29 are a flange stopper portion and a guide bracket as engagement guide members, 30 is a sliding engagement hole, and 31 is a connecting link piece.

Claims (1)

[Claims for Utility Model Registration] A seat with a suspension device in which a suspension device is attached to the seat via a seat adjuster, wherein the side of the seat has a belt anchor and a lower end portion to which a seat belt is attached. An engaging member extending downward and bent into a hook shape is fixed, and the engaging member is slidable in the front-rear direction and engaged upward in a hook-like manner with the upper frame of the suspension device. An engagement guide member is fixed, a connecting link piece is pivotally attached to one of the upper frame and the lower frame of the suspension device so as to be rotatable in the front-rear direction, and the free end of the link piece is attached to the other side. are engaged so as to be movable in the longitudinal direction, and the tensile load of the seat belt is transferred to the engagement portion between the engagement member and the engagement guide member and between the frames of the suspension device. A seat with a suspension device for a vehicle, etc., characterized in that the seat is received on the floor side through the connecting link piece.