JPS6229309Y2 - - Google Patents

Description

[Detailed Description of the Invention] Conventional widened seats have the disadvantage that it is difficult to change the degree of widening.

The present invention was developed to eliminate such drawbacks of the conventional method, and the main seat frame supporting the main seat rest is extended laterally to form a sub-bottom frame, which is received horizontally on top of the sub-bottom frame. In a widened seat in which a sub-seat is provided on a sub-seat frame fixed on a movable rail that can move left and right by being supported by a receiving rail with a fixed rail, a sub-seat rest is provided at the bottom of the receiving rail. A notch is formed in the detachable lock piece along the left-right direction, and the lock piece is pivotally connected to the moving rail at a pivot point, and an operating handle is provided on an engaging pawl that is removably engaged with the notch.

The configuration of the present invention will be explained below with reference to drawings of embodiments of the present invention.

To first explain the correspondence between the symbols in the figure and the names of their parts, 1 is the main seat frame, 2 is the sub-bottom frame, 3 is the receiving rail, 4 is the moving rail, 5 is the sub-seat frame, 6 is the detachable lock piece, 7 is a notch, 8 is a pivot point, 9 is an engaging claw,
10 is an operation handle.

A main seat frame 1 supporting a main seat rest is laterally extended to form a sub-lower frame 2.

A receiving rail 3 is fixed on the sub-lower frame 2 in the left-right direction. A sub-seat frame 5 fixed on a movable rail 4 that can be received by a receiving rail 3 and moved in the left-right direction
A sub-restaurant is provided above.

Let us consider the widened seat constructed in this way.

Detachable lock piece 6 provided at the bottom of the receiving rail 3
A notch 7 is bored along the left and right direction. The detachable lock piece 6 is detachably attached to the receiving rail 3 by, for example, a screw 11. The notch 7 may be a hole. Although the number of notches 7 is four in the figure, it is not limited to four.

An operating handle 10 is provided on an engaging claw 9 which is pivotally connected to the moving rail 4 at a pivot point 8 and is removably engaged with a notch 7. In the figure, when the operating handle 10 is moved to the right, the engagement claw 9 and the notch 7 are disengaged, and when the operating handle 10 is released, the spring 12
Due to the restoring force, the engaging claw 9 engages again.

The structure in which the main seat rest 13 is supported by the main seat frame 1 and the structure in which the sub-seat rest 14 is supported by the sub-seat frame 5 are well known, so their explanation will be omitted. The receiving rail 3 is the moving rail 4
Although a structure for supporting the rail is also known, an example is shown in FIG. 4, in which the receiving rail 3 and the moving rail
A roller 15 is interposed between the two.

Since the present invention has such a configuration, its functions and effects are as follows.

When it is necessary to change the width expansion range, adjustment pitch, etc., in the present invention, it is only necessary to replace the detachable lock piece 6 with a suitable one, and the work is extremely simple.

The maximum width expansion is determined by the engagement claw 9 coming into contact with the stopper 16 on the detachable lock piece 6, and the minimum width expansion is determined by the engagement claw 9 coming into contact with the stopper 17.

When the operating handle 10 hits the stopper 18,
Further rotation of the engaging claw 9 is restricted.

The structures of the detachable lock piece 6, engagement claw 9, etc. are not limited to those shown in the drawings.

As described above, the present invention eliminates the drawbacks of the conventional seat and provides a widened seat that allows the degree of widening to be easily changed, and is of great practical value.

[Brief explanation of the drawing]

Figure 1 is a top view with the main seat rest and sub-rest removed, and the width has not been expanded. FIG. 2 is a top view of the same state, but with the width widened to the maximum. FIG. 3 is a front view in the maximum widening state. FIG. 4 is a cross-sectional view of the receiving rail and the vicinity of the moving rail. In the figure, 1 is the main seat frame, 2 is the sub-bottom frame, 3 is the receiving rail, 4 is the moving rail, 5 is the sub-seat frame, 6 is the detachable lock piece, 7 is the notch, 8 is the pivot point, and 9 is the engagement point. Synthetic nails,
10 is an operating handle, 13 is a main seat rest, and 14 is a sub-rest.

Claims (1)

[Scope of utility model registration request] The main seat frame 1 that supports the main seat support is extended laterally to form a sub-bottom frame 2, and a receiving rail 3 is fixed on the sub-bottom frame 2 in the left and right direction. In a widened seat in which a sub-seat is provided on a sub-seat frame 5 fixed on a movable rail 4 that can be moved in the direction, a removable lock piece 6 provided at the bottom of the receiving rail 3 is attached along the left-right direction. This widened seat has a removable locking piece, which is provided with an operating handle 10 on an engaging pawl 9 which is pivoted to a movable rail 4 by a pivot point 8, and which is removably engaged with the notch 7.