JPS58218914A - Reclining device for seat - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat reclining device, and particularly to a rotation range regulating portion of a rotation arm provided on a base portion to which the rotation arm is pivotally attached.

Conventionally, a seat-clining deno (chair D) has a base part 1 attached to the seat cushion part side, and a rotating shaft pivotally connected to this base part 1 by a shaft 2, as shown in FIGS. 1 and 2. It is provided with a movable arm 3, a latch mechanism (not shown) for adjusting the rotation angle of the rotation arm, and an operation arm 4 for controlling the latch mechanism and adjusting the rotation angle of the rotation arm 3.

A lock part B is fixed to the free end of the rotating arm 3, and a pin 5 protruding in the direction of the base part 1 is provided at the end on the base part 1 side. An arc-shaped slit 6 is formed on the part 1 side, and both ends 6a of this slit 6.

6b, the movement range of the pin 5, that is, the rotation arm 3
The rotation range of is restricted. Note that the operating arm 4 is provided with a pin 15 fitted into a slit 16.

However, according to the conventional seat reclining device, since the slit 6 is formed in the base portion 1, the strength of the base portion 1 in the bending direction is reduced.

In particular, this poses an important problem when the wall thickness of the base part 1 is set thin (also when the wall thickness of the base part 1 is set to be thin). The bottle is accommodated in this press groove, and the pin is regulated at both ends of the press groove to eliminate the above drawbacks, and will be described in detail below using examples.

3 to 6 are diagrams showing one embodiment of the seat reclining device according to the present invention, particularly the base part, and in each figure, the base part 10 has a movement trajectory of the bin 5 provided on the rotating arm 3. A press groove 11 is provided along. The depth of the press groove 11 is such that the pin 5 housed in the groove 11 does not come into contact with the bottom surface 11a, and holes 11b are formed at both ends of the press groove 11.

Therefore, the bottle 5 is guided along the groove 11 and the hole 1
It comes into contact with the edge 11x of 1b and its movement is restricted.

According to the above configuration, since the base portion 10 does not have a slit like the conventional one, there is no possibility that the strength of the base portion 10 will decrease. Furthermore, since the press grooves 11 protrude toward the back side of the base portion 10 and have a bead shape, the strength of the base portion 10 can be increased on the contrary.

The purpose of the hole 11b is to prevent the bottle 5 from protruding from the groove 11 along the inclination when the edge 11y of the press groove 110 is inclined.
If e can be formed in the right angle direction as shown in FIG. 7, this may be omitted.

Moreover, by providing a slit S instead of the hole 11b as shown in FIG. 8, and forming a press groove 11 in the vicinity of the slit S, the pin can be regulated.

Further, a pin 15 may also be provided for the manual operation arm 4 for adjusting the rotation angle of the rotation arm 3, and the rotation angle may be adjusted using a groove 11 similar to that explained in FIG. .

As explained above, the seat sheet according to the present invention,
According to the lining device, the base portion has a plate shape;
A rotating arm for operating the seat back part which is rotatably pivoted to this base part, and an operating arm for adjusting the rotation angle of this rotating arm, or a rotating arm provided on the operating arm. Since it is constructed with a bottom that accommodates a pin placed in the base part along the locus of movement of the bottle, it is possible to reliably control the rotation range of the rotating arm or operating arm and increase the strength of the base part. can improve reliability.

[Brief explanation of drawings]

1 and 2 are a perspective view and a front view showing an example of a conventional seat reclining device, and FIGS. 3 to 6 are a front view and a perspective view showing an embodiment of a seat reclining device according to the present invention. 7 and 8 are a sectional view and a perspective view showing other embodiments of the seat reclining device according to the present invention. 1.10...Base part, 3...Rotating arm, 4...
・Operation arm, 5.15... pin, 6 river slits, l
l...Press groove.

Claims (3)

[Claims] (1) A base portion in the form of a plate, a rotation arm for operating the seat pack portion rotatably attached to the base portion, and an operation arm for adjusting the rotation angle of the rotation arm; 1. A reclining device for a seat, comprising: a bottomed groove for accommodating a pin provided on a base portion along a locus of movement of a pin provided on a rotating arm or an operating arm. (2) The bottomed groove is a press groove.
Reclining device for seats as described in Section 2. (3) The seat reclining device according to claim 1, wherein the bottomed groove has holes or slits at both ends.