JPS60203205A - Reclining 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 (Technical Field of the Invention) The present invention relates to the structure of a reclining seat used, for example, as a front seat of an automobile.

(Prior Art and Problems) Conventionally, this type of reclining seat I/C has been designed to fit a general body shape from an ergonomic point of view by adjusting the seat surface of the cushion part and the back contact part of the backrest that constitute the seat body. Various measures have been taken to improve comfort while sitting and to stabilize the back muscles.

However, with such a conventional structure, the shape of the backrest part of the seat body is fixed, and cannot be adjusted to suit the body shape of the individual occupant, making it functionally inadequate. Instead, there were various inconveniences, such as a feeling of discomfort and tiringness.

(Object of the Invention) The present invention has been made under the above circumstances, and its purpose is to provide a functional reclining system by making the backrest part deformable according to the body shape of the passenger. The purpose is to provide seats.

(Structure of the Invention) In order to achieve the above-mentioned object, the present invention is characterized in that the backrest portion of the seat body can be bent forward in a plurality of stages.

(Embodiment of the Invention) Hereinafter, the present invention will be described in detail based on an illustrated embodiment.

As shown in FIG. 1, reference numeral 1 in the figure is a reclining seat main body according to the present invention, which includes a cushion portion 2, a reclining seat Il@(not shown in detail) 3 and an arm 4 on the cushion portion 2.
5. Backrest part that can be tilted and adjusted in the front-back direction via the backrest part 5. The backrest portion 5 is constructed of three upper and lower sections of the paddle 121 to the portion 5a, the backrest portion 5b, and the waist portion 5C via a link mechanism and a ratchet type locking mechanism, which will be described later. As shown by the two-dot dashed line, it can be articulated forward.

That is, the link mechanism 6 that allows the backrest portion 5 to be bent and movable in an articulated manner is as shown in FIGS. 3 and 4.
A first link 7 forming the headrest portion 5a and a lower end 7a of the first link 7 are pivotally supported forward through a pin 8 so as to be freely bent and rotatable, and the lower end 9a is attached to the arm 4. a second link 9 pivotally supported via a pin 10;
connecting end portions 11a for communicating between the first link 7, which is pivotally supported by a link 9, and the arm 4;

11b is pivotally supported by pins 12 and 13 forming the back support part 5b, and one end part 15a corresponding to the waist part 5C side is attached to the support shaft 14 which is pivotally inserted in the middle part of the third link 11.
is rotatably connected to the rack shaft 1, and the other end 15b is meshed with a binion gear 16 of a locking mechanism to be described later.
5, and as shown in FIG. By rotating the link 7 forward and at the same time moving the pivot points of the first link 7 and the second link 9 rearward, the entire body can be bent and rotated in an articular manner.

The pinion gear 1 meshed with the rack shaft 15
6, the rotating shaft 18 of the operating knob 17 is used as a support shaft, and a ratchet type locking mechanism 19 as shown in FIG. 6 enables adjustment of forward and reverse rotation.

That is, the lock mechanism 19 is capable of freely rotating the lock gear 2o fixed to the arch 4 and the lock members 22 and 23 that are always biased by a spring or the like in a direction that meshes with the lock gear 2o via the retainer 21. an adjustment member 24 provided in the adjustment member 24, and a pair of pins 26. which operate the lock members 22 and 23 to alternately open and release the meshing state with the lock gear 20, respectively, in one long hole 25a concentrically formed in the adjustment member 24. 27 and the other elongated hole 25b provided in the rotary member 28 and formed concentrically in the adjustment member 24 to restrict the rotation range of the rotary member 28. A beam member 30 is attached to the rotating member 28.
The operating knob 17 is fixed through the C, and allows rotation of the operating knob 17 in the counterclockwise -81 direction or in the clockwise direction, as shown in FIGS. , can be locked in the desired rotational position.

(Effects of the Invention) As explained above, the present invention provides a backrest portion that
The link mechanism allows for forward joint bending adjustment over multiple stages, making it far more functional and highly practical than conventional structures.
j effect.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing an embodiment of the reclining seat according to the present invention, Figure 2 is a dimensional explanatory diagram showing the jointly bent state of the backrest, and Figures 3 to 5 are of the link mechanism. FIG. 6 is an exploded perspective view of the locking mechanism, and FIGS. 7(a), 7(b), and 7(c) are explanatory views showing the locking mechanism in the open operating state. 1... Seat body, 2... Cushion part, 3...
Reclining hinge mechanism, 4... arm, 5...
Backrest portion, 6...link mechanism, 19...lock mechanism. Patent applicant: Ikeda Bussan Co., Ltd.

Claims (1)

[Claims] A reclining seat characterized in that the backrest portion of the seat body can be bent forward in multiple @joint ways.