JP3020942B1 - Movable chair - Google Patents

Abstract

An object of the present invention is to adjust a seat plate in a movable chair in accordance with various adjustment states so as to provide a more natural use feeling. SOLUTION: A waist frame 6 includes an outer waist frame 6a and an inner waist frame 6b.
And attached to the protruding portion 12 on the support beam portion 4 so as to be rotatable independently of each other.
Is protruded from the support beam portion 4, and a foot frame 7 is rotatably attached to the front end. In this case, the foot frame 7 has a connection structure that maximizes displacement in a straight line with respect to the outer waist frame 6a. Near the connection point of the foot frame 7 with the outer waist frame 6a, the distal end of the linear motion shaft 8b of the driving means 8 is connected via the activation arm 16, while the distal end abuts on the inner waist frame 6b to form the inner waist frame. A push-up link 18 for interlocking and tilting the frame 6b is protruded from the activation arm 16 at a predetermined angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable chair in which a back frame for supporting an upper body and a foot frame for supporting a lower body can be adjusted, and a seat plate is adjusted in accordance with the adjustment of the back frame and the foot frame. In addition, the present invention relates to a movable chair that realizes a more natural feeling of use.

[0002]

2. Description of the Related Art Conventionally, there is a movable chair having a structure which can be adjusted to a normal sitting state, a leg-lifting state, or a flat state like a bed. By using these functions, the user can literally relax, can be used not only as a chair, but also for rest and nap, and because the posture of the user can be freely adjusted, it is used for treatment, barber, beauty It is widely used in many fields.

[0003]

However, the waist frame, that is, the seat plate, is usually of a fixed structure, and in any adjustment state, the seat plate remains intact, so it is undeniable that some unnaturalness remains. By the way. The present invention has been proposed in order to improve such a problem, and in a movable chair configured to be capable of adjusting a back frame, a foot frame, and a waist frame, a seat plate is provided in accordance with various adjustment states. It is an object to provide a movable chair that can be adjusted to provide a more natural feel.

[0004]

In order to solve the above-mentioned problems, the present invention comprises a back frame for supporting the upper body, a waist frame for supporting the buttocks, and a foot frame for supporting the lower body. In a movable chair in which a frame and a back frame drive means and a foot frame drive means are configured to be able to raise and lower, respectively,
Waist frame and is divided into a second waist frame, these first and second waist
Rotatably attached to one end of the frame in the vicinity before xenon frame side respectively, while pivotally coupled to the foot frame to the first waist frame legs in the connecting portion near the foot frame and the first waist frame In the frame,
The foot frame drive unit is connected via an activation arm, and an interlocking link linked to the activation arm forms a predetermined angle with respect to the activation arm.
Fixed to each back frame driving hand and the back frame and foot frame as
Steps, at least the chair state by adjusting the undulation by the foot frame drive means , and can be adjusted to a flat state, when adjusting to the chair state ,
Activate the foot frame drive means and activate the link via the activation arm
And the end of the second waist frame near the foot frame is lifted by movably contacting the distal end side of the interlocking link with the second waist frame. The present invention, and a foot frame supporting the lower back frame and the lower body supporting the back frame and the buttocks supporting the upper body, the back frame driving unit and the back frame and foot frame respectively, the feet
In a movable chair configured to be capable of raising and lowering adjustment by frame driving means, the waist frame is divided into a first waist frame and a second waist frame, and one end sides of these first and second waist frames are respectively described as above. The foot frame is rotatably attached to the vicinity of the back frame side, and the foot frame is rotatably connected to the first waist frame within a predetermined range, and the foot frame is connected to the foot frame near the connection point between the foot frame and the first waist frame. The foot frame drive means is connected via an activation arm, and an interlocking link interlocked with the activation arm is fixed at a predetermined angle with respect to the activation arm, and the back frame and the foot frame are connected to each other. It can be adjusted to a chair state or a flat state by adjusting the undulation by the back frame drive means and the foot frame drive means, respectively.
While the ability to higher than the foot frame side to the back frame side
When adjusting to the chair state , the foot frame drive means
Activate the interlocking link via the activation arm
Then , the distal end side of the interlocking link is movably abutted on the second waist frame to lift the end side of the second waist frame near the foot frame, while the foot frame side is moved from the flat state to the back side. When the height is higher than the frame side, the first waist frame side is adjusted in conjunction with the foot frame.

[0005]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a movable chair according to the present invention. FIG. 1 shows a movable chair 1. This movable chair 1 has a leg 3 erected on a base leg 2 and a support beam 4 disposed on the top of the leg. In the figure, the back frame 5 is rotatably attached to the right end side,
The back frame drive means (not shown) is configured to be able to adjust the undulation, and the waist frame 6 is rotatably attached to a portion of the support beam portion 4 near the back frame 5, while the tip of the waist frame 6 is supported at the support beam portion. The foot frame 7 is rotatably connected to the front end side of the waist frame 6 so that the foot frame 7 can be raised and lowered by foot frame driving means 8. The cushion member M that follows the movement of the foot frame 7 is placed.

The base leg 2 is in contact with the floor via a roller 9 and an adjuster leg 10. Further, of the legs 3 erected on the base leg 2, the right side, that is, the leg 3 supporting the back frame 5 is provided with a motor 8 constituting the foot frame driving means 8.
a is swingably mounted. As described above, the support beam portion 4 includes, on the right end side on the upper surface side facing the waist frame 6,
The back frame 5 is rotatably mounted via the protrusion 11. Also, the projection 11 to which the back frame 5 of the support beam 4 is attached.
In the vicinity, the waist frame 6 is rotatably mounted via the protrusions 12, while a spacer member 13 for holding the waist frame 6 in a substantially horizontal state is provided near the left end of the support beam 4. Provided.

The back frame 5 has a projection 1 on the support beam 4.
A starting arm 14 is provided protrudingly from the vicinity of the mounting point 1 for connecting the back frame driving means (not shown) to adjust the height of the back frame 5. The waist frame 6 includes an outer waist frame 6 a and an inner waist frame 6.
and b, and is attached to the projection 12 on the support beam 4 so as to be rotatable independently of each other.
The outer waist frame 6a is longer than the inner waist frame 6b,
The tip side projects from the support beam part 4, and the foot frame 7 is rotatably attached to the tip side. In this case foot frame 7
Has a connection structure that maximizes displacement in a straight line with respect to the outer waist frame 6a. That is, in the hinge 15 for pivotally fixing the foot frame 7 and the outer waist frame 6a,
When the foot frame 7 is displaced so as to be linear with respect to the outer waist frame 6a, the ends of the foot frame 7 come into contact with each other and the foot frame 7 is further moved.
Cannot be lifted (see FIG. 2).

In the vicinity of the connection point of the foot frame 7 with the outer waist frame 6a, a linear motion shaft 8b constituting the foot frame driving means 8 is provided.
Activation arm 1 for connecting the tip and raising and lowering foot frame 7
6 is provided via a horizontal shaft 17 fixed to the back of the foot frame 7,
Further, a push-up link 18 for fixing the inner waist frame 6b in an interlocking manner by abutting the tip of the inner waist frame 6b on the horizontal shaft 17 is fixed. In this case, the push-up link 18 is protruded at a predetermined angle with respect to the activation arm 16, and a roller 18 a is provided at an end thereof so as to be movable while being in contact with the inner waist frame 6 b. I have. It should be noted that the foot frame driving means 8 can be replaced with a manual driving means or other driving means using hydraulic pressure, air pressure or the like.

In the movable chair 1 as described above, in the chair state, the distal end of the foot frame 7 is bent toward the floor so that the user's feet reach the floor. At this time, feet
The linear drive shaft 8b in the frame drive means 8 is most retracted,
The activation arm 16 on the back of the foot frame 7 is in a state of being pulled up and lifted, and therefore, the push-up link 18 is also lifted, the inner waist frame 6b is inclined, and the knee-raising angle is set on the seat surface supported by the inner waist frame 6b. (See FIG. 1). On the other hand, the outer waist frame 6a does not move and is supported by the spacer member 13 in a horizontal state. From this state, when the motor 8a of the foot frame driving means 8 is started to extend the linear motion shaft 8b, the foot frame 7 rotates clockwise in the figure around the connection point with the outer waist frame 6a. As the foot frame 7 rotates clockwise, the push-up link 18 also rotates clockwise following the foot frame 7, whereby the inner waist frame 6b lifted by the push-up link 18 falls down and is flat. It becomes. On the other hand, if the back frame 5 is also laid down by a back frame driving means (not shown), the back frame 5, the outer waist frame 6a, the inner waist frame 6b, and the foot frame 7 are aligned, and the cushion member M The whole becomes flat (see FIG. 3).

If necessary, the back frame 5 can be made lower than the foot frame 7 (extended state). In this case, the linear motion shaft 8b of the foot frame driving means 8 is further extended. Then, the hinge 15 at the connection point of the foot frame 7 with the outer waist frame 6a allows the foot frame 7 and the outer waist frame 6a to be attached to the protruding portion 12 on the support beam portion 4 in a linear state. It rotates clockwise around the center of rotation. At this time, since the push-up link 18 is further displaced with respect to the inner waist frame 6b, the inner waist frame 6b does not move and remains supported by the spacer member 13 in a horizontal state. On the other hand, independently of such an operation, the back frame 5 is tilt-adjusted by a back frame drive unit (not shown),
The back frame 5 side is low, and the back frame 5, the outer waist frame 6a, and the foot frame 7 can be in a straight extension position (see FIG. 4).

[0011]

According to the present invention, a chair state, a flat state,
When adjusting to the stretched state, according to the angle of the foot frame,
Since the waist frame can be displaced in conjunction with each other, in any state, the user can be brought into an adjusted state without a sense of incongruity as a whole, and a more comfortable use feeling is provided.

[0012]

[Brief description of the drawings]

FIG. 1 is a schematic structural explanatory view showing an example of a movable chair according to the present invention.

FIG. 2 is a schematic enlarged explanatory view showing a connection structure between a foot frame and an outer waist frame in the movable chair shown in FIG. 1;

FIG. 3 is a schematic side view showing the movable chair shown in FIG. 1 in a flat state.

4 is a schematic side view showing the movable chair shown in FIG. 1 in a reversely extended state.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Movable chair 2 Base leg 3 Leg part 4 Support beam part 5 Back frame 6 Waist frame 6a Outer waist frame 6b Inner waist frame 7 Foot frame 8 Foot frame drive means 8a Motor 8b Linear motion shaft 9 Roller 10 Adjuster leg 11 Projection DESCRIPTION OF SYMBOLS 12 Projection part 13 Spacer member 14 Starting arm 15 Hinge 16 Starting arm 17 Horizontal axis 18 Push-up link 18a Roller

Claims (2)

(57) [Claims] 1. A back frame for supporting an upper body, a waist frame for supporting a buttocks, and a foot frame for supporting a lower body, wherein the back frame and the foot frame can be respectively raised and lowered by a back frame driving means and a foot frame driving means. In the movable chair configured as described above, the waist frame is divided into a first waist frame and a second waist frame, and these first and second waist frames are divided.
Are rotatably mounted near the back frame side, and the foot frame is rotatably connected to the first waist frame.
Foot frame at connection points near the foot frame and the first waist frame, wherein
Linked via the activation arm legs frame driving means, communicating to the start arm
Make the moving link link at a predetermined angle with respect to the activation arm.
And the back frame and the foot frame are respectively provided with back frame driving means,
At least chair state by adjusting up and down by foot frame drive means ,
Adjustable to a flat state, when adjusting to a chair state , foot frame
Activate the driving means and connect the interlocking link via the activation arm.
The movable chair is configured to lift the end of the second waist frame near the foot frame by moving the leading end of the interlocking link so as to be movable with respect to the second waist frame. . 2. A back frame for supporting the upper body, a waist frame for supporting the buttocks, and a foot frame for supporting the lower body, wherein the back frame and the foot frame can be respectively raised and lowered by a back frame driving means and a foot frame driving means. In the movable chair configured as described above, the waist frame is divided into a first waist frame and a second waist frame, and these first and second waist frames are divided.
Are rotatably mounted in the vicinity of the back frame side, respectively , and the foot frame is rotatably connected to the first waist frame within a predetermined range, and a connection point between the foot frame and the first waist frame. To the foot frame in the vicinity, the foot frame driving means is connected via an activation arm,
A link linked to this activation arm is placed on the activation arm.
Fixed to form a fixed angle , and the back frame and the foot frame
Back frame drive means, and undulating adjusted by foot frame driving means, while the adjustable chair state or flat state, and adjustable to higher than the foot frame side to the back frame side, adjust the chair state When starting, activate the foot frame drive means and through the activation arm
A configuration in which the end of the second waist frame closer to the foot frame is lifted by linking the interlocking link so that the distal end side of the interlocking link movably abuts the second waist frame. On the other hand, when the height of the foot frame is higher than the height of the back frame from the flat state, the first waist frame is adjusted in conjunction with the foot frame.