JPH034591Y2 - - 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 particularly to a mechanism for holding a seated person using a seat belt.

[Conventional technology]

2. Description of the Related Art Some vehicles, such as automobiles, are equipped with a suspension device that elastically supports the seat between the seat and the floor surface in order to absorb vibrations and shocks when driving on rough roads.

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 shock absorber is interposed between both frames, and the suspension operation is performed by the spring and the shock absorber.

When wearing a seat belt on a seat with a suspension device, if the belt anchor is fixed to the seat or the upper frame of the suspension device, in the event of a collision, the suspension device will be directly affected by the recoil of the occupant and will be damaged. There is a risk that the seat belt may be thrown out, and if the belt anchor is fixed to the floor side, there will be a problem that the seat belt will be unnecessarily tightened by the seat belt due to the operation of the suspension device even during normal driving. A belt anchor is fixed to the seat or upper frame, and a secondary belt anchor is fixed to the floor side, and the secondary belt anchor and the primary belt anchor are connected by a secondary belt or a link, and the seat belt is attached to the seat belt in the event of a collision. It was constructed so that the recoil of the user was received on the floor side.

[Problem that the invention attempts to solve]

As described above, in conventional seats with suspension devices, a secondary belt anchor and a secondary belt or link are used to attach the seat belt, which makes the configuration complicated. It is necessary to install the secondary belt with slack in consideration of changes in length due to the amount of stroke and the amount of movement of the slide rail, and the amount of slack in this secondary belt varies depending on the set position in the front and back of the seat so that the seated person can sit comfortably. There is an inconvenience that it cannot be done.

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 held securely and safely with a seat belt.

[Means for solving problems]

In order to solve the above problems, the present invention provides a seat with a suspension device in which the seat is supported by a suspension mechanism. Bent engagement edges are formed opposite to each other at the ends of the protection covers that are fixed to the rear surfaces of the par frame and the lower frame in a vertical manner, and the engagement edges of the protection covers The two engagement edges are hooked together so that their edges correspond to the inner bottom of the mating engagement edge at a required distance.

[Effect]

With this configuration, the engaging edges of both protection covers of the suspension device do not interfere with each other under normal conditions, and in the event of a collision, a tensile load is applied to the seat belt due to the reaction of the seated person, and this can prevent the When the frames are lifted and deformed, they engage with each other and receive the tensile load of the seat belt, holding the seated person against the seat.

〔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 4 is provided between the seat cushion 2 and the floor surface F of the vehicle body. A belt anchor 6 is attached to bind the free end of the seat belt 5 that holds the seat belt 5. Note that the base end of the seat belt 5 is wrapped around a retractor (not shown) and fixed to a center pillar or the like in the same way as a normal seat belt.

The suspension device 4 includes an upper frame 7 fixed to the lower surface of the seat cushion 2 and a pair of link pieces 9 and 10 pivoted in a crosswise manner to a lower frame 8 fixed to the floor F of the vehicle body. X consisting of
It is supported movably in the vertical direction by a link 11, and a tension coil spring 12 is suspended between one frame, for example, the upper frame 7, and the movable end of one link piece, for example, link piece 9 of the X-shaped link 11. In addition, a shock absorber 13 is interposed between the frames 7 and 8.

Protection covers 14 and 15 are fixed to the rear side of the suspension device 4, that is, the rear surface of the upper frame 7 and the rear surface of the lower frame 8, respectively, facing each other vertically from the viewpoint of safety for rear seat occupants. . This protection cover 14,1
In this example, 5 is made of a rigid plate material with high mechanical strength, such as a steel plate, and has engagement edges 14a and 15a bent in a U-shape facing upward and downward at each end. In the normal state, the engaging edges 14a and 15a of the protection covers 14 and 15 are hooked together so that their edges correspond to the inner bottom of the other engaging edge with a required distance. Therefore, the upper frame 7 can freely move up and down with respect to the lower frame 8 in a normal seating state. If the upper frame 7 moves upward more than necessary, the engaging edges 14a, 15a of both protection covers 14, 15 mesh with each other to prevent the upper frame 7 from moving upward. has been completed.

Also, both protection covers 14 and 15
The engaging edges 14a, 15a of the two engaging edges 14a, 15a are formed by adjusting the bent shape and dimensions of the U-shape or the like.
The end edges of 15a can be formed so as to always face each other in the front-rear direction.

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

First, a seated person, seated on the seat 1, wraps the seat belt 5 around his or her body and ties the end to the belt anchor 6 as usual. In this state, during normal running, the suspension device 4 operates freely and absorbs vibrations, shocks, etc. without the protection covers 14 and 15 engaging.

In this normal driving condition, if a large impact occurs due to a collision, etc., the suspension device 4
The tensile load of the seat belt 5 due to the reaction of the occupant is applied to the upper frame 7 of the upper frame 7, and the upper frame 7 deforms the X-link 11 and the rear part of the upper frame 7 is lifted. The engaging edges 14a and 15a mesh and engage with each other, preventing the upper frame 7 from lifting and deforming with respect to the lower frame 8, thereby preventing the suspension device 4 from being deformed or damaged.

That is, when a large impact occurs such as in a collision, the belt anchor 6 becomes fixed to the vehicle floor surface F via the protection covers 14 and 15, and the tensile load applied to the seat belt 5 is transferred to the floor surface F. The seated person is received by the side, and the seated person is securely held in the arms and is safely protected without being thrown out from the seat 1.

Furthermore, by forming the engaging edges 14a, 15a of the protection covers 14, 15 so that their end surfaces always correspond to each other, the meshing engagement of the protection covers 14, 15 is more secure when an impact occurs. You will be able to do this.

FIG. 4 shows another embodiment of the protection cover, showing the upper and lower protection covers 24, 2 of this embodiment.
5 has a plate surface formed in a wave shape, and the engaging edges 24a, 25a are bent into a U-shape while keeping the wave shape.

Therefore, the engaging edges 24a, 25a of the protection covers 24, 25 are formed into a wavy shape in plan and a U-shape in cross section, and this wavy shape becomes a rib to form a rib on the engaging edges 24a, 25a. The bending strength is improved, and the opening of the engaging edges 24a, 25a is suppressed during the meshing engagement due to the tensile load when an impact occurs as described above. Therefore, even if the tensile load of the seat belt is applied to the upper frame of the suspension device in the event of a collision, the upper frame is prevented from lifting and deforming, and the seated person is more securely held by the seat belt. Become.

Note that the plate surface shape of the protection cover and the bent shape of the engagement edge are not limited to those described above, and can be modified in various ways without departing from the gist of the present invention.

[Effect of idea]

As described above, according to the present invention, in a seat with a suspension device, the tension load applied to the seat belt attached to the seat due to the reaction of the seated person in the event of a collision is applied to the upper and lower portions of the suspension device. Since it is configured so that it can be received on the floor side through the cover, the seated person can be securely held against the seat, further improving safety. Since no secondary belt or the like is used, the structure is simple and the cost can be reduced.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts of a seat with a suspension device according to the present invention, Fig. 2 is a side view of the seat, Fig. 3 is a side view of the seat in an operating state, and Fig. 4 is a side view of the seat in an operating state.
The figure is an exploded perspective view of another example of the protection cover applied to the present invention. In the figure, 1 is the seat, 4 is the suspension device, and 5 is the seat.
is the seat belt, 6 is the belt anchor, 7 is the upper frame, 8 is the lower frame, 14, 15,
24, 25 are protection covers, 14a, 1
5a, 24a, 25a are engaging edges.

Claims (1)

[Claims for Utility Model Registration] A seat with a suspension device in which the seat is supported by a suspension mechanism, a belt anchor to which a seat belt is fastened is fixed to the seat, and an upper frame of the suspension device. and a protection cover that is fixed to the rear surface of each of the lower frames in a vertically corresponding manner, and bent engagement edges are formed to face each other at respective ends thereof, and the engagement edges of both protection covers A seat with a suspension device for a vehicle, etc., characterized in that these are combined in a hooked state so that their edges correspond to the inner bottom of the mating engagement edge with a required spacing.