JPH03123507A - Chair with reclining means - Google Patents

Abstract

PURPOSE:To facilitate adjustment of reclining angle with a simple means by providing a chair with leg members, a seat member placed on the leg members and coupled rotatably therewith, and a head support and back support reclining members which can adjust the reclining angle of the seat member. CONSTITUTION:A chair 1 comprises a leg member 2 having LAMBDA-shaped side sections, and a seat member 3 is mounted on the front and upper part of the leg member 2 rotatably around an shaft 4. A first head support reclining mem ber 6 is mounted to the leg member 2 through a long hole formed 5 in the leg member 2 and on the rear part of the seat member 3 in such a way as can vary the reclining angle with respect to the seat member 3. A shaft 7 which connects the long hole 5 and the first reclining member 6 and the seat member 3 are connected through a connection rod 11 in such a manner that the reclining angle of the first reclining member 6 can be adjusted. Further they can lock each other when weight is put on the seat member 3 and unlocked when weight is put on the first reclining member 6. A second back support reclining member 14 is mounted on the leg member 2 and the rear part of the seat member 3 in such a way as can vary the reclining angle with respect to the seat member 3 following the movement of the first reclining member 6.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a chair with a relining device that allows the backrest angle to be easily adjusted.

(Prior Art) Conventionally, as a backrest angle adjustment mechanism for a chair with a regrining device, a mechanically complex stepless regrining device with a relatively large number of parts, as seen in automobile regrining devices, or a single mechanism has been used. There is a ratchet type relining device that is simple but difficult to operate.

(Problem to be Solved by the Invention) Therefore, although the automobile relining device has good operability and is easy to use, it has the disadvantage of being expensive, and
In the case of the ratchet type relining device, although it is cheap, it is difficult to operate, and what is common to both of them is that the back of the seat does not come down when the backrest is reclined, making it uncomfortable to sit. There was a drawback that it was not good.

Therefore, an object of the present invention is to provide a simple and inexpensive device, and to
Moreover, it is an object of the present invention to provide a chair with a reglining device that is easy to operate.

(Means for Solving the Problems) That is, the present invention provides a seat member for a seat rotatably attached to the front upper part of the leg member of a chair as a hinge, and a guide formed from the front of the leg member toward the rear. A first back member for a head support backrest, which is attached to the rear part of the seat part and the seat part so as to be able to change the backrest angle, and a guide part formed on the leg member and the first back member are connected to each other. and the seat member are connected to each other such that the backrest angle of the first back member can be adjusted, the seat member can be locked when the body weight is applied to the seat member, and the seat member can be unlocked when the body weight is applied to the first back member. a rod, an armrest attached to the connecting rod, and a back support backrest that is attached to the leg member and the rear part of the seat part so as to be able to change the angle of the backrest between the leg member and the seat part while following the first back member. and a second back member for use in the chair.

(Function) In the case of a chair with a relining device configured as described above, in the normal posture of sitting on the chair, the weight of the person is on the seat and the second back member, so the seat member and the connecting rod are In the locked state, the weight applied to the second backrest member does not affect the connecting rod in any way, so that the backrest angle remains stable in any tilted state of the backrest member.

Next, when changing the reclining angle of the back member, one person should bend their body with their hips slightly lifted from the rear of the seat member, and the first back member, which supports the shoulders and head, will move backward. When force is applied, the seat member and the connecting rod become unlocked, and both the first back member and the second back member can gradually increase their inclinations, and the seat member and the second back member are connected at an appropriate inclination angle.
When the user returns to the normal sitting position in which weight is applied to the back member, the seat member and the connecting rod are locked again.

Next, when you put your hand on the armrest to restore the reclining posture where the back member is tilted, your back and hips may be slightly separated from the back member and the seat member, so they are connected to the seat member. The rod is in an unlocked state, and the back member can easily return to its original substantially right-angled position.

(Effect of the invention) In this way, in the case of the present invention, it is possible to change the sitting posture with respect to the recliner chair, and in particular, in this case, the user does not recline in the normal sitting posture when resting, but reclines with the body arched. The chair is equipped with a regrining device, which has a simple structure, in which the regrining operation is performed naturally in a straight posture with the will to recline, and there is no need for a troublesome manual regrining operation. This has the effect of significantly lowering the price of.

(Example) Next, the configuration of an example of the present invention will be described with reference to the drawings.

A seat member 3 for sitting is rotatably attached to the front upper part of the leg member 2 whose left and right side surfaces of the chair 1 are approximately human-shaped. A guide part such as a rail or a long groove formed toward the front, in this embodiment, a first head support backrest that can change the backrest angle between the length 1fi5 and the rear part of the seat member 3.
A back member 6 is attached.

That is, in the case of this embodiment, the lower end of the first back member 6 is connected to the length t11!5 via the shaft 7, and the middle part of the first back member 6 is formed at the middle part of the first back member 6. It is connected via a shaft 10 passed through the length y1B and a hole 9 formed in the rear part of the seat member 3.

In addition, the shaft 7 of the connecting portion between the long groove 5 formed in the leg member 2 and the first back member 6 and the seat member 3 are arranged such that the backrest angle Tl4m of the first back member 6 is possible and the weight is applied to the seat member 3. They are connected via a connecting rod 11 in such a way that they can be unlocked when one's weight is applied to the locking portion/first back member 6.

That is, the intermediate portion of the connecting rod 11 is slidably fitted into grooves 12 formed at the left and right positions of the seat member 3, and in this fitted state forms a kind of flexible hook or lever. An armrest 13 is attached.

In addition, the leg member 2 and the seat member 3 are connected to each other while following the first back member 6.
A second back member 14 for back supporting backrest is attached to the backrest angle changing rotation between the rear part and the seat member 3.

That is, the lower end of the second back member 14 is connected to the length II through the shaft 15.
I! The intermediate portion of the second back member 14 is connected to the rear portion of the seat member 3 via a shaft IO.

Next, the operation of this embodiment will be explained.

In the case of the chair l with a relining device configured in this way, when the person is seated in the chair l in a normal posture, the weight of the person is applied to the seat member 3 and the second back member 14, so that the seat member 3
and the connecting rod 11 are in a locked state, and the weight applied to the second back member 14 has no effect on the connecting rod 11, so that the backrest angle does not change when both the front members 6, 14 are in any state of tension. is stable without changing.

Next, when changing the reclining angle of both front members 6.14, the person should bend his or her body slightly upward from the rear of the seat member 3. A rearward force is applied to the member 6, and the seat member 3' and the connecting rod 11 become unlocked, and the inclination of the f52 back member 14 as well as the first back member 6 can be gradually increased, and an appropriate When the seat member 3 and the connecting rod 11 are returned to the normal sitting position in which the weight is applied to the seat member 3 and the second back member 14 at the inclination angle, the seat member 3 and the connecting rod 11 are locked again.

Next, in order to restore the reclining posture in which the front members 6 and 14 are tilted, when the hand is placed on the armrest 13, the back and hips are slightly separated from the front members 6 and 14 and the seat member 3. As a result, the seat member 3 and the connecting rod 11 become unlocked, and both the front members 6 and 14 can easily return to their original substantially right-angled positions.

As described above, in the case of this embodiment, changing the sitting posture with respect to the reglining chair l, in particular, in this case, instead of reglining in the normal sitting posture when resting, the body is bent into a reglining preparation posture, that is, the reglining posture is changed. When the back is stretched out with the intention of lining, the reglining operation is performed naturally, and there is no need for troublesome manual reglining operations.The structure is simple, and the price of the chair with reglining device 1 is significantly reduced. can be lowered to

[Brief explanation of drawings]

1 and 2 are side views of one embodiment of the present invention, and FIGS.
FIG. 6 is a detailed view of the parts.

Claims (1)

[Claims] a seat member rotatably attached to the front upper part of the leg member of the chair; a guide portion formed from the front to the rear of the leg member; A first back member for a head support backrest that is attached so that the backrest angle can be changed, a connecting portion between a guide portion formed on the leg member and the first back member, and the seat member are connected to each other so that the backrest angle of the first backrest member can be changed. a connecting rod that is adjustable and connected to be lockable when one's weight is applied to the seat member and unlockable when one's weight is applied to the first back member; an armrest attached to the connecting rod; A second back member for a back support backrest is provided, which is attached to the leg member and the rear part of the seat portion so as to follow the back member so as to be able to change the angle of the backrest between the leg member and the seat portion. Chair with relining device.