JPH0415546Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention relates to a seat cushion hinge structure for an automobile that supports a seat cushion so that it can be raised forward.

(Prior art and its problems) In recent years, in the rear seat 1 of an automobile as shown in FIG. 8, the seat cushion 2 is supported so that it can be raised forward.
Attempts have been made to utilize the space created between the seat bag 3 and the seat bag 3 as a luggage storage area. As shown in FIGS. 9 and 10, this hinge structure supports the seat cushion 2 so that it can be raised forward, and the seat cushion 2 is attached to the floor 5 of the vehicle body through an arm 4 so as to be swingable back and forth. It has been well known in the past that the shaft is pivoted in such a manner that the

However, in the case of the conventional example in which the front end of the seat cushion 2 is directly received by the floor 5 as shown in FIG. 9 in order to keep the forward posture of the seat cushion 2 constant, the seat cushion 2 Not only will the front end become dirty, but the uneven shape of the floor 5,
Since the forward tilting angle of the arm 4 is regulated by the length of the arm 4, the pivot position, etc., there is a drawback that the various design conditions described above are restricted in setting the desired forward tilting angle. Ta. In addition, in the case of the conventional example in which the intermediate portion of the arm 4 is supported by the stepped portion 5a of the floor 5 and the seat cushion 2 is held floating above the floor 5, as shown in FIG. There is no need to worry about floor 2 getting dirty, but floor 5
As in the previous example, restrictions are imposed on the uneven shape of the arm 4 and the pivot position of the arm 4, and especially in this case,
Since the entire load of the seat cushion 2 is applied to the arm 4, breakage is likely to occur, and in order to avoid breakage, the strength of the arm 4 must be increased, which has the drawback of increasing material costs.

(Purpose of the invention) This invention was made to solve the above problem, and it is possible to improve the seat cushion without imposing restrictions on other design conditions and without concentrating the load of the seat cushion on one member. An object of the present invention is to provide a seat cushion hinge structure for an automobile, which allows the seat cushion to be easily set in an arbitrary tilted forward position that is raised from the floor of the vehicle body, and in which a safe cover member is provided at the hinge part. .

(Means for achieving the object) In order to achieve the above object, the automobile seat cushion hinge structure according to the present invention has a seat cushion fixed to the upper part of the lower end of the bracket provided on the floor of the vehicle body. The lower end of the arm is pivoted so that the arm can swing back and forth, and a pair of left and right rods of a slide stopper formed of wire are attached to the support member provided at the upper end of the bracket at a predetermined stroke. The slide stopper is supported so that it can slide back and forth and swing up and down, and the front ends of the rods of the slide stopper are bent inward and inserted and locked into holes formed on both sides of the arm. The front end of the rod of the slide stopper is pressed against both sides of the arm by both sides of a cover member made of an elastic material and attached to the arm to hide its front surface.

(Function) A pair of left and right rods of a slide stopper made of wire are supported on a support member provided at the upper end of the bracket so that they can slide by a predetermined stroke and are swingable, and each rod of the slide stopper is Since the front end of the rod is inserted and locked into the hole in the arm, the swing angle of the arm is regulated by the stroke length of the arm, and the arm is firmly held in the bracket. Further, the front end of each rod of the slide stopper is bent and inserted and locked into a hole in the arm, so the structure is extremely simple, and the cover member at the front of the arm is provided for safety. Since the locking portion is pressed against the rod, there is no fear that the front end of the rod will come off from the hole in the arm.

(Example) Fig. 1 is an exploded perspective view of a seat cushion hinge structure for an automobile which is an embodiment of this invention, Fig. 2 is an exploded perspective view of a stopper support part in the seat cushion hinge structure, and Fig. 3 4 and 4 respectively show a rear perspective view of the cover member in the seat cushion hinge structure and a horizontal sectional view of the cover member in its attached state, and FIG. 5 shows a longitudinal sectional view of the seat cushion hinge structure in operation.

The seat cushion hinge structure in this embodiment is applied to the rear seat of an automobile, and a fifth
A bracket 7 having ribs 7a on both side edges is provided on the front side of the protrusion 6a formed as shown in the figure.
It is fixed by tightening with a bolt 9 (shown in FIG. 5) through a mounting hole 8 formed in the center thereof. A cylindrical bearing part 10 is formed at the lower end of this bracket 7, and a seat cushion 11 is formed in the upper half part.
A similarly cylindrical bearing portion 13 formed at the lower end of the arm 12 to which the arm 12 is fixed is connected to the bearing portion 10 on the bracket 7 side via a shaft 14, so that the arm 12 is fixed to the floor panel 6. It is pivoted so that it can swing back and forth. The arm 12 is generally dogleg-shaped and has ribs 12a on both side edges, and when the arm 12 is in a closed position with respect to the bracket 7, its upper half is placed on the protrusion 6a of the floor panel 6 almost parallel to the protrusion 6a. It is formed in a horizontal position. In addition, the lower half of the arm 12 is slightly bent forward to create a space 15 (shown in FIG. 5) that is large enough to prevent your hand from being caught between the arm 12 and the bracket 7 when the arm 12 is in a closed position. It is becoming secured. A mounting hole 16 is formed in the upper half of the arm 12 for tightening and fixing the lower surface side of the front part of the seat cushion 11 with a screw, and the lower half of the arm 12 is formed with a mounting hole 16 for fixing the lower surface of the front part of the seat cushion 11 with a screw. a mounting hole 18 for mounting a concealing cover member 17;
19 is formed.

On the other hand, a cylindrical bearing part 20 is formed at the upper end of the bracket 7, and this bearing part 20 has a cylindrical stopper support member 2 as shown in FIG.
1 is rotatably inserted. This stopper support member 21 is made of a flexible and deformable elastic material such as resin, and has guide grooves 21a formed at both ends thereof with the width of the tip end being the width of the guide groove 21a. A positioning flange 21b is formed at a closer position, and a positioning claw 21c is formed at a position corresponding to the guide groove 21a on the circumferential surface of the other end. Then, the end side where the positioning pawl 21c is formed is pressed from above and below the guide groove 21a so as to crush the guide groove 21a, and the stopper support member 21 is attached to the bearing part 20 of the bracket 7 from this end side. By inserting the stopper support member 21, the stopper support member 21 is inserted with the bearing portion 20 sandwiched between the positioning flanges 21b and the positioning claws 21c at both ends.
The stopper support member 21 can be positioned in the width direction with respect to the bearing portion 20 without using other members such as a retaining ring. The guide grooves 21a at both ends of the stopper support member 21 are engaged with the rods 22a on both left and right sides of the slide stopper 22, which is approximately U-shaped and formed of wire, and the slide stopper 22 is guided by the guide grooves 21a. is supported so that it can slide freely back and forth.
The stroke of the slide stopper 22 is limited by the rear portion 22b of the slide stopper 22 being received by the bearing portion 20 of the bracket 7. The front ends of the rods 22a on both the left and right sides of the slide stopper 22 are respectively locked in elongated holes 23 formed vertically in the left and right ribs 12a of the arm 12. That is, the front end of the rod 22a of the slide stopper 22 is bent inward as shown in FIG.
After being inserted into the elongated hole 23 of 2, it is caulked in a direction perpendicular to the longitudinal direction of the elongated hole 23, and the caulked portion 22c prevents it from coming off. Also,
The above-mentioned cover member 17 attached to the front surface of the lower half of the bracket 12 is made of an elastic material such as resin that can be flexibly deformed so that the left and right sides 17d of the cover member 17 are always in the shape shown by the imaginary lines in FIG. Then, the right and left side portions 17d are slightly expanded and overlapped with the front end of the rod 22a of the slide stopper 22, so that the restoring force of the both side portions 17d of the cover member 17 presses the front end of the rod 22a inward. It is composed of Therefore, rattling of the slide stopper 22 with respect to the arm 12 can be suppressed without separately providing other members. As shown in FIG.
Pads 17c are integrally formed on the back surface of d, and the protrusions 17a, 17b are connected to the mounting holes 18,
The pad 17c is fitted to the arm 12 for vertical positioning, and the pad 17c is pressed against the rib 12a for horizontal positioning. A pair of the above-described seat cushion hinge structures are provided in parallel to one seat cushion 11 of the rear seat.

Next, the operation of this seat cushion hinge structure will be explained. When the seat cushion 11 is folded backwards and used as a seat, the arm 12 is in a horizontal position with its upper half above and parallel to the protrusion 6a of the floor panel 6, as shown by the solid line in FIG. On the other hand, the lower half is positioned on the front side of the bracket 7, overlapping with it. At this time, the front surface of the lower half of the arm 12 is hidden by the cover member 17, and this portion is not exposed to view. On the other hand, the slide stopper 22 is retracted rearward in a horizontal position substantially parallel to the protrusion 6a of the floor panel 6.

When the rear end side of the seat cushion 11 is lifted from the above-mentioned backward position, the counterclockwise rotation of the arm 12 causes the slide stopper 2 to
2 is a stopper support member 2 that follows the arm 12.
The slide stopper 22 slides forward while being guided by the guide groove 21a of FIG.
The arm 12 is supported by the slide stopper 22 when the arm 12 is advanced to the point where it is received by the bearing part 20 of the seat cushion 11, and the seat cushion 11 is tilted forward at a predetermined forward angle such that its front end is slightly raised from the floor panel 6. is maintained. Therefore, the forward tilting angle of the seat cushion 11 can be arbitrarily selected and set by changing the length of the slide stopper 22. At this time, the load of the seat cushion 11 is applied to the arm 12 and the slide stopper 22.
This means that they will be able to share their support.

In the above-mentioned forward raising operation, since the front end of the slide stopper 22 is locked by the elongated hole 23 of the bracket 12, the slide stopper 22 is fully left behind as shown in FIG. During the movement, the elongated hole 23 provides a relief for the movement in which the front end of the slide stopper 22 tries to move up and down following the up and down displacement caused by the rotation of the arm 12. It turns out. Therefore, over the entire rotation range of the arm 12, the rear part 22b of the slide stopper 22 does not swing up and down significantly using the stopper support member 21 as a fulcrum, and the rear part 22b of the slide stopper 22 does not swing up and down significantly using the stopper support member 21 as a fulcrum. As shown in each figure, almost horizontal trajectories are drawn. Therefore, the protrusion 6 of the floor panel 6
It is not necessary to provide a very large gap in order to accommodate the slide stopper 22 between the seat cushion 11 and the seat cushion 11 in the rearward position. Incidentally, if the round hole 24 is used to lock the front end of the slide stopper 22 to the bracket 12 as shown in FIG. 7, the front end of the slide stopper 22 will be vertically displaced as the arm 12 rotates. Since there is no escape part for the slide stopper 22, it will be displaced vertically as it is, and as shown by the one-dot chain line and the two-dot chain line in the same figure, the front end of the slide stopper 22 can be slightly displaced vertically using the stopper support member 21 as a fulcrum. Reflected in the rear part 22b, the vertical swing stroke S of the rear part 22b is also larger than in the case of FIG. 6, but the situation where the size of the swing stroke S of the rear part 22b becomes a problem is The period is from just before the cushion 11 is completely rearwardly moved to when the rearward tilting is completed. At this stage, the arm 12 is close to the stopper support part 21 of the bracket 7, so the stopper support part 21 of the round hole 24 The vertical vertical movement of the rear part 22 is not very large, and the vertical swing stroke S of the rear part 22 is not very large as shown in the figure, so the gap between the seat cushion 11 and the protrusion 6a of the floor 6 is slightly widened. Alternatively, this can be solved by providing a small recess along the trajectory of the rear part 22b of the slide stopper 22 on the back surface of the seat cushion 11 or on the upper surface of the protrusion 6a. If provided, there is an advantage that such trouble is not required.

The operation of returning the seat cushion 11 from the forward posture shown by the phantom line in FIG. 5 to the backward posture shown by the solid line is performed by a process reverse to the above-described forward movement. Even if you inadvertently put your hand between the bracket 7 and the arm 12 during this backward tilting operation, there is a space 15 between the bracket 7 and the arm 12 to prevent your hand from getting caught, as mentioned above. There is no need to worry about any accidents that may result in injury to your hands.

In the above embodiment, the seat cushion hinge structure of this invention was applied to a rear seat, but it can be similarly applied to a front seat.

(Effects of the invention) As described above, according to the automobile seat cushion hinge structure of this invention, the arm pivotally connected to support the seat cushion so as to be able to swing back and forth is moved by the slide stopper. Since the rotation angle is restricted to a predetermined position, there is no need to limit the design conditions such as floor shape, arm length, arm pivot position, etc. Since the load on the seat cushion is shared between the arm and the slide stopper, the entire load is concentrated on one member, resulting in increased strength. Problems can also be avoided. Moreover, the front end of the rod of the slide stopper is pressed against both sides of the arm by utilizing the elastic restoring action of both sides of the cover member to hide the front surface of the arm. The rattling of the locking portion can be suppressed by using the cover member without using a separate member, and the number of parts and the number of assembly steps can be reduced.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a seat cushion hinge structure for an automobile which is an embodiment of this invention, Fig. 2 is an exploded perspective view showing the mounting state of the stopper support member in the embodiment, and Fig. 3 is a cover in the embodiment. 4 is a horizontal sectional view showing the assembled state of the bracket, slide stopper, and cover member in the embodiment; FIG. 5 is a longitudinal sectional view showing the operation of the embodiment; Fig. 6 is an explanatory diagram showing the relationship between the elongated hole of the bracket and the operation of the slide stopper in the embodiment, and Fig. 7 is an explanatory diagram showing the operation of the slide stopper when the elongated hole of the bracket in the embodiment is made into a round hole. , FIG. 8 is a perspective view of a rear seat, and FIGS. 9 and 10 are schematic views of conventional examples. 6...Floor panel, 7...Bracket, 11
...Seat cushion, 12...Arm, 17...
...Cover member, 17d...Side part, 21...Stopper support member, 22...Slide stopper, 2
2a... Rod, 23... Long hole.

Claims (1)

[Scope of utility model registration request] The lower end of an arm having a seat cushion fixed to its upper part is pivoted to the lower end of a bracket provided on the floor of the vehicle body so that the arm can swing back and forth, while a support provided at the upper end of the bracket A pair of left and right rods of a slide stopper formed of wire are supported by a member so as to be able to slide back and forth by a predetermined stroke and swing up and down, and the front end of each rod of the slide stopper is The rod of the slide stopper is bent inward and inserted and locked into holes formed on both sides of the arm, and the rod of the slide stopper is attached to both sides of a cover member made of an elastic material and attached to the arm to hide its front surface. An automobile seat cushion hinge structure characterized in that the front end is pressed against both sides of the arm.