JPH0329224Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a locking mechanism for fixing a floor-contacting frame of a vehicle seat to the floor.

[Conventional technology]

First, let me explain about a vehicle seat that has a floor-touching frame that is fixed to the floor using a locking mechanism.
As shown by the solid line in FIG. 3, the lower end of the front leg 1 is
A rear leg 5, which is rotatably attached to an upright piece 3 fixed to the floor 2 by a pin 4 and protrudes toward the floor from the lower end of the seat back part B, is attached to a locking mechanism A at the center of the floor grounding frame 6. has. As shown in FIGS. 4 and 5, this lock mechanism A is fixed to an L-shaped lock operating member 7 and a rotating shaft 9 that is close to a handle portion 8 of this operating member 7 and perpendicular to the handle portion. a U-shaped upper spring receiver 10, a U-shaped frame 11 that laterally holds the floor contact frame 6, and a rotation axis of the operating member 7 disposed between this frame 11 and the upper spring receiver 10. Spring 1 inserted into 9
2. An engaging piece 14 is fixed to the end of the rotating shaft 9 of the operating member with a nut 13. This engaging piece 14 is rectangular as shown in FIG.

This locking mechanism is constructed by inserting a spring 12 into the rotating shaft 9 of the operating member 7, and then inserting the rotating shaft 9 into the through holes 16, 16 provided in the parallel pieces 15, 15 of the frame 11, respectively, and into the upper part of the floor-contacting frame. The engaging piece 14 is inserted into the holes 17, 17 that are drilled toward the floor, and then the center hole 18 of the engaging piece 14 is inserted into the tip of the rotating shaft 9 that protrudes below the floor-grounding frame 6. It is assembled by screwing the nut 13 onto the rotating shaft 9.

When using the seat shown in FIG. 3 as a seat, the rear legs 5 are placed on the floor 2, and the rectangular direction of the engaging piece is aligned with the rectangular locking hole 19 provided in the floor, and then the operation is performed. By grasping the handle 8 of the member 7 and pushing down the operating member against the spring 12, the engaging piece 14 is positioned below the back surface 20 of the floor 2 as shown by the two-dot chain line in FIG. Turn the handle 8 to rotate the engagement piece 14 along with the rotating shaft at 90°.
The engaging piece 14 is latched to the floor 2 by rotation. This will keep the seat in place. When using this seat attachment part as a place to store luggage, turn the handle 8 90 degrees to release the engagement piece from the floor, then
Rotate the back part B around the pin C and overlap it with the cushion part D, stand the rear leg 5 upright, and direct the floor-grounding frame 6 toward the ceiling, as shown by the two-dot chain line in FIG. rotate forward. If the luggage is placed behind the seat in this state, the rear legs 5 will remain upright on the ceiling side even if the luggage is loaded high, thereby preventing the luggage from moving forward when the vehicle is stopped.

[Problem that the invention attempts to solve]

By the way, when the seat is tilted forward as described above, the floor grounding frame 6 is located on the ceiling side,
Since the engaging piece 14 of the locking mechanism protrudes beyond the floor-grounding frame 6, there is a problem in that there is a risk of damage to luggage or the human body.

[Means for solving problems]

This invention was made with the aim of solving the above problem, and is characterized in that a guard member having a through hole surrounding the outer periphery of the engaging piece of the locking mechanism is fixed to the floor grounding frame. do.

[Effect]

In this invention, a guard member having a through hole that surrounds the outer periphery of the engaging piece of the locking mechanism attached to the floor-grounding frame is fixed to the floor-grounding frame.
To prevent damage to cargo or the human body when a floor-grounding frame is located on the ceiling side. Furthermore, when the guard member is formed of an elastic member such as rubber, it serves as a buffer member that absorbs the impact when the floor-contacting frame touches the floor. The engaging piece is guided by the through hole.

〔Example〕

An embodiment of this invention will be described below in detail with reference to the drawings.

Figure 1 is a side cross-sectional view of the locking mechanism of this invention when the floor-grounding frame of the seat is in contact with the floor, and Figure 2 is a side sectional view of the locking mechanism of this invention when the floor-grounding frame of the seat is on the ceiling side.
FIG. 3 is a perspective view of the locking mechanism shown in the figure;

The locking mechanism of the embodiment shown in FIGS.
It has all the conventional locking mechanisms shown in the figure. Each code from 1 to 20 is 1 in Figure 5.
Indicates the same thing as each code from to 20.

The locking mechanism of the embodiment shown in FIGS. 1 and 2 differs from the locking mechanism of FIG. 5 only in that it includes a guard member 21, so this guard member 21 will be described below. The guard member 21 has a U-shaped cross section, and consists of a bottom portion 22 and two side portions 23, 23 that rise from both sides of the bottom portion 22 and face each other so as to sandwich the vicinity of the spring 12.
3 to form a groove 24. This groove 24 has a width that allows insertion of the floor-touching frame. Outer surface 2 of bottom 22
Stepped bolt hole 2 penetrating from 5 to the groove 24
6 and 26 are respectively drilled near both ends in the longitudinal direction of the groove 24, and threaded bolts 27 and 27 are inserted into the bolt holes 26 and 26, respectively, to attach the guard member 21 to the floor frame. bottom part 22
is provided with a rectangular through hole 28 having the same shape and the same orientation as the rectangular locking hole 19 provided in the floor. The engaging piece 14 is located in the through hole 28, and the bottom 22 of the guard member 21 surrounds the outer periphery of the engaging piece 14.
In order to engage the engagement piece 14 on the back surface of the floor 2, the operation member 7 may be pushed down, the engagement piece 14 may be pushed down through the through hole 28 and the locking hole 19, and the operation member 7 may be rotated by 90 degrees. When the floor-grounding frame is on the ceiling side, the engaging piece is located in the through hole 28 and surrounded by the guard member, so that it will not damage luggage or the human body. In this embodiment, the guard member 21 is molded from an elastic and rigid resin, and the bottom part of the guard member 21 is shaped to be in contact with the floor before the floor-contacting frame is in contact with the floor, so that the impact when the floor-contacting frame is in contact with the floor is I was able to alleviate this. In addition, the side portions 23, 2
3, when even the spring 12 is surrounded, the spring will not be clogged with foreign matter and the elasticity of the spring will not be impaired.

[Effect of idea]

In this invention, a guard member having a through hole that surrounds the outer circumference of the engagement piece of the lock mechanism is fixed to the floor frame, so that when the floor frame is on the ceiling side, the engagement piece can without damaging it. In particular, the through hole has substantially the same shape and orientation as the locking hole in the floor, and when inserting the engaging piece into the locking hole, this functions as a guide, making insertion easier.

[Brief explanation of the drawing]

Figure 1 is a side sectional view of the locking mechanism of this invention when the floor-grounding frame is in contact with the floor, Figure 2 is a perspective view of the locking mechanism of Figure 1 when the floor-grounding frame is on the ceiling side, Fig. 3 is a perspective view of a seat with a locking mechanism, Fig. 4 is a perspective view of a conventional locking mechanism, Fig. 5 is an enlarged side sectional view of the locking mechanism of Fig. 4, and Fig. 6 is a plan view of an engaging piece. It is a diagram. 2... Floor, 6... Floor grounding frame, 7... Operation member,
14... Engaging piece, 19... Locking hole, 20... Back side of floor,
21...Guard member.

Claims (1)

[Scope of utility model registration request] An operating member that is inserted into a hole extending in the floor direction formed in a floor-contacting frame of a vehicle seat and is rotatable and can move forward and backward in the direction of the locking hole in the floor, and is fixed to the tip of the operating member, In a locking mechanism for a vehicle seat, the locking mechanism includes an engaging piece that comes into contact with the underside of the floor through the locking hole, and the locking piece is set substantially in the same shape and in the same direction as the locking hole, and surrounds the outer periphery of the engaging piece. A locking mechanism for a vehicle seat, characterized in that a guard member having a through hole is fixed to the floor grounding frame.