JPS587244A - Seat with hip part support apparatus - 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 with a lumbar support device in which the lower part of the seat back main body of a seat such as an automobile can move back and forth to adjust the pressing force around the fifth to fifth lumbar vertebrae of an occupant.

Figure 4 shows the body pressure distribution map in the self-resting car seat. This body pressure distribution indicates the body pressure (P) applied to the seat pack when the seat is in an ideal position.

In the figure, A is the thoracic vertebrae, and B is the lumbar vertebrae. The highest load area is the lumbar vertebrae (B), especially the third to fifth lumbar vertebrae. By the way, when manufacturing conventional automobile seats, the seat pack is adjusted to suit the standard body shape and provided to the user, and the lumbar support may be adjusted slightly depending on the change in reclining angle. It was no more than what was done.

When a passenger sits there, the load is not ideally applied to the third to fifth lumbar vertebrae of the passenger, making it difficult to drive comfortably and causing fatigue, which is often on the left side. Furthermore, constantly applying body pressure to the same area can easily cause fatigue, but occasionally changing the pressure around the 3rd to 5th lumbar vertebrae, which have the highest body pressure distribution, can help prevent blood circulation disorders. Become. In this way, it is important to appropriately adjust the pressing force of the 6th to 5th lumbar vertebrae using the seat back body, but in the past, almost no attempt was made to adjust the pressing force of the 3rd to 5th lumbar vertebrae. is. Therefore, it was not possible for the occupant to easily adjust the pressing force on the fifth to fifth lumbar vertebrae, and no seat was available with a mechanism for this purpose.

Focusing on the above points, the present invention divides the main body of the seat pack into a fixed upper main body, a movable lower main body, and a fixed lower main body, and uses the upper part of the movable lower main body as a hinge structure to move the lower part back and forth, This made it possible to adjust the pressing force on the third to fifth lumbar vertebrae manually or electrically by the occupant.

This will be explained in detail below with reference to the drawings.

The drawings illustrate the present invention, and FIG. 1 is a cutaway front view of a main part of an automobile seat, and FIG. 2 is a side view of the same.

FIG. 3 is a perspective view of the seat. This seat consists of a fixed upper body (1) and a movable lower body (2).
) and a fixed lower body (3), and the upper part of the movable lower body (2) has a hinge structure so that the lower part can move back and forth.

It has a special structure that prevents That is, first, the side frames (6a) (6) are attached to the seat back frame (5).
b) Attach the long hole metal/' to the top of this side frame.
(7) (7) is installed. Then, a bottle attachment meta~ (9) is attached to the upper part of the gate-shaped movable lower body frame (8).
) (9) was attached, and the attached bottle QOαQ was fitted into the elongated hole Meta 1%/(7) (b) described above, creating a hinge structure in which the bottle αq could slide inside the elongated hole. .

With such a structure, the lower part of the movable lower main body (2) can be moved back and forth due to the hinge structure while the front upper part (Y) is kept in a substantially fixed position.

As described above, the movable lower body (2) is rotated by turning the adjustment knob (to). To do this, attach the adjustment knob (2) to the end of the adjustment shaft (2), which is supported between the left and right side frames (6a) (61:) by the α force of a bearing (B) and whose one end reaches the side of the seat pack. (To) is installed, and reverse threads are cut on the left and right sides of the adjustment shaft @. And the screw receiver α→α◆ is screwed into this threaded portion (to) (to). This screw receiver Q◆a4 is the vertical movement connecting rod (a)
It is connected to the vertical movement axis Ql via (g).

The vertical movement axis α has both ends attached to the side frames (6a) (6b
), and the upper end of the curved bracket α is fitted inside it. The upper end of the curved bracket α9 is also provided with a long bracket. Ql is a member formed almost in a U-shape, and the side frame (6a) is shaped like a bin in the center.
((51)) It is rotatably supported by a support bracket provided above. The lower end of the curved bracket a is attached to the lower part of the gate-shaped movable lower body frame (8) by means of a pin.

In this example, the adjustment knob (
) to enable manual rotation of the adjustment shaft, but as shown by the dashed line on the left side of Figure 1,
It is also possible to drive the motor by attaching the motor to the side frame (6a) and attaching a reduction gear to the adjustment shaft (2). When the adjustment shaft @ is rotated manually or electrically in either the forward or backward direction, the screw receiver α4α◆ moves to the left or right, and the vertical movement axis α moves to either the up or down direction via the connecting rod (G). Rotate the curved bracket α. The movable lower body (2
) moves back and forth. Therefore, the movable lower body (2
) can be adjusted arbitrarily between the normal position (Xa) and the most protruding position (xb) 1.

In order to enable the movable lower body (2) to press just the third to fifth lumbar vertebrae, a fixed lower body (3) is provided at the lower part of the movable lower body (2). The fixed lower body frame (to) connects to the left and right seat back frames (5) (5)
It has the same structure as the other fixed upper body (1) in that it is suspended over K and a foamed elastic body is formed thereon.

Since the present invention has the structure as described in detail above, even when the movable lower body is rotated, the hinge structure is special and there is no gap at the contact part with the fixed upper body, so there is no discomfort. Appropriate pressure can be applied to the 5th to 5th lumbar vertebrae from the back even when the occupant's body shape changes or the reclining inclination changes, which is good for the appearance, and this can be adjusted appropriately according to the occupant's preference. It has many excellent points such as:

[Brief explanation of the drawing]

FIG. 1 is a cutaway front view of the main parts of the automobile seat, and FIG. 2 is a side view of the same. FIG. 6 is a perspective view of the seat. FIG. 4 is a body pressure distribution chart. (1) Fixed upper body (2) Movable lower body (3
) Fixed lower body (4) Seat (8) Movable lower body frame @ Adjustment shaft (To) Threaded part α◆ Screw receiver (To) Vertical movement connecting rod σQ
Vertical movement axis Qlle Curved buffet plane Upper long hole Support bracket (to) Motor thread Fixed lower body frame■ Adjustment knob and above Applicant Namba Press Kogyo Co., Ltd. Agent Patent attorney Mori Hirozobe Figure 1 Male 2 Figure 53

Claims (1)

[Claims] IV-) The main body of the bag is divided into a fixed upper body (1), a movable lower body (2), and a fixed lower body (3), and the upper part of the movable lower body (2) is attached to a hinge. A seat with a lumbar support device, characterized in that the lower part of the seat can be moved back and forth, and the pressing force on the third to fifth lumbar vertebrae of an occupant can be adjusted. 2 It is rotatably supported toward the frame side by a support bracket in the center, and the lower part of the curved bracket fitted with the vertical movement shaft (l) that moves up and down by the rotation of the adjustment shaft (6) in the upper oblong hole is Movable lower body frame with hinge structure (8
2. A seat with a lumbar support device according to claim 1, wherein the lower part of the movable lower body (2) is moved back and forth by rotation of the adjustment shaft (2).