JPH057861Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention mainly relates to a mechanism for locking forward tilting of a seat installed in an automobile and capable of tilting forward.

[Conventional technology]

Conventionally, as shown in FIGS. 6 and 7, a fitting groove 5 into which a striker 9, which stands upright from the floor 10, is fitted is provided at the lower end of the trailing edge frame 4 of the seat which can be folded forward. A lock bracket 6 is inserted into the fitting groove 5, and a fitting groove 7 into which the striker 9 is fitted is inserted into the lock bracket 6.
A lock 8 is attached to the fitting groove 7 so as to be retractable.

In the above structure, the striker 9 fits into the fitting groove 7 of the lock bracket 6 through the fitting groove 5 of the trailing edge frame 4 and engages with the lock 8, thereby preventing the seat from falling forward. There is.

[Problem that the invention attempts to solve]

In the conventional configuration described above, when an external force as shown by the arrow in FIG. Since there is a notch, the periphery of the fitting groove 5 is easily pushed by the striker 9 and the fitting groove 5 is easily deformed in the direction of opening. When the fitting groove 5 opens, the lock bracket 6 also opens, making it easier for the striker 9 to disengage from the lock 8.
If the seat is disengaged, the seat will fall forward, which is extremely dangerous.

[Means for solving problems]

In the present invention, as a means to solve the above conventional problems, the front legs 11A of the seat 11 are pivotally connected to the floor 20, so that the seat 11 can be folded forward. A fitting groove 15 into which a striker 19 installed upright from the floor 20 is fitted is provided at the lower end.
A notch 15A extending rearward is formed at a predetermined location of the seat 5A, and a lock 18 that engages with the striker 19 is attached to the trailing edge frame 14 to provide a locking mechanism for locking the seat forward. be.

[Function] When an external force is applied in the forward direction to the trailing edge frame of the seat due to a sudden stop of an automobile, etc., and the trailing edge frame moves slightly forward, the inner side of the striker will strike the notch in the insertion groove of the trailing edge frame. into the groove, and do not press the periphery of the groove.

[Effect of idea]

Therefore, in the present invention, even if a forward external force is applied to the trailing edge frame of the seat, the periphery of the insertion groove of the trailing edge frame is not pushed by the striker, so the trailing edge frame cannot be opened. Without,
Therefore, the engagement between the striker and the lock does not come off, and the seat can be reliably prevented from falling forward, ensuring extremely high safety.

〔Example〕

The present invention will be explained with reference to an embodiment shown in FIGS. 1 to 5. As shown in FIG. The front leg 11A is suspended from the front part of the seat 12, and the lower end of the front leg 11A is pivoted to the floor 20. At the rear edge of the seat portion 12 of the seat 11 is a rear edge frame 14 as shown in FIG. A fitting groove 15 is provided, and a notch 15A extending rearward is formed at a predetermined location of the fitting groove 15. An inverted U-shaped lock bracket 16 is inserted into the fitting groove 15, and a lock bracket 16 has a fitting groove 17 into which a striker 19 is fitted, and a lock 18 is attached to the fitting groove 17 so as to be retractable. ing. The lock 18 is held in the first position by a spring 18A.
It is biased in the direction of the arrow in the figure and is received on the lower surface of the trailing edge frame 14, and also the rotation shaft 18B of the lock 18.
is extended and a handle 18C is attached to the outside of the trailing edge frame 14. The striker 19 erected from the floor 20 has an inner and outer side portion 19.
A, 19B and an upper side 19C, and when the sheet 11 is used as shown in FIG.
is the insertion groove 1 of the rear edge frame 14 from the upper side 19C.
5 and pushes up the lock 18 to the inside, and as shown in FIG. 4, the upper side 19C of the striker 19 and the lock 18 engage to prevent the trailing edge frame 15 from moving upward. are doing. In this way, the seat 11 is prevented from falling forward, but in order to make the seat 11 fall forward, the striker 19 and the lock 1 are rotated by rotating the lock 18 in the opposite direction of the arrow in FIG. 1 using the handle 18C.
8, and move the backrest 13 to the seat 12.
After tilting the seat 11 upward, the seat 11 is folded forward as shown in FIG. When an external force in the forward direction shown by the arrow is applied to the trailing edge frame 14 via the seat belt 11B as shown in FIG. 2 due to a sudden stop of the automobile, the trailing edge frame 14 is pulled by it and the fourth
Move slightly forward from the position shown in the figure to the position shown in Figure 5. At this time, if the notch 15A of the fitting groove 15 of the trailing edge frame 14 is located at the inner side 19A of the striker 19, the inner side 19A is located as shown in FIG.
fits into the notch 15A. Therefore, even if the trailing edge frame 14 moves slightly forward, the striker 19 will not push the periphery of the fitting groove to deform the trailing edge frame 14 in the opening direction. In this way, even if a forward external force is applied to the seat 11, the engagement between the striker 19 and the lock 18 is not released, and the seat 11 is reliably prevented from falling forward.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention, in which Figure 1 is a cutaway perspective view of the outer end of the rear edge frame, Figure 2 is a side view of the seat in use, and Figure 3 is a side view of the seat in use. 4 is a bottom view of the trailing edge frame in the locked state; FIG. 5 is a bottom view of the trailing edge frame having moved slightly forward; FIG. 6 is the outer end of the trailing edge frame of the conventional example. Part cutaway perspective view, No. 7
The figure is a side view of the trailing edge frame in a deformed state. In the figure, 11... Seat, 11A... Front legs, 14
... Trailing edge frame, 15 ... Fitting groove, 15A ...
Notch, 18...lock, 19...strike,
20...floor.

Claims (1)

[Scope of utility model registration request] The front legs of the seat are pivotally connected to the floor, allowing the seat to fold forward, and the lower end of the trailing edge frame of the seat is provided with an insertion groove into which a striker installed upright from the floor is inserted. A forward tilting mechanism for a seat, characterized in that a notch extending rearward is formed at a predetermined location of the insertion groove, and a lock that engages with the striker is attached to the trailing edge frame. Stop mechanism.