KR930009707B1 - Armchair - Google Patents

Abstract

The comfortable chair comprises the spring (5,15); the arm- supporting frame which can be rotated on the axis-supporter (20); the first axis (8) composed of the back frame (1) and the left frame (2) which are rotatable; and the second and the third axis composed of a friction piston (14) which can perform a sliding-friction movement and a T-type supporting frame having the center axis (16) of the back frame and the left frame. The operation of the chair starts when the rotation of the third axis is bigger or less than the sliding motion of the friction piston (14).

Description

Self-adjusting armchair by weight

1 is a perspective view of the present invention.

2 is a side cross-sectional view illustrating an operating state.

3 is the enlarged section of the main part.

4a, b, c is a perspective view showing the assembled state of the present invention;

(a) is a perspective view showing the coupling state of the back plate and the seat plate.

(b) is a rear exploded perspective view showing the bonding state of the T-type support frame.

(c) is an exploded perspective view showing the bonding state to the leg frame.

5 is a side view illustrating a state of use of the assembled invention.

* Explanation of symbols for main parts of the drawings

1: back frame 2: seat frame

3: T-type supporting frame 6: Arm part

8: 1st axis 11: 2nd axis

14: friction piston 15: third axis

16: central axis 17: cylinder

18: extended end 19: fixed handle

The present invention relates to an armchair, and more particularly, to an automatically adjustable armchair by weight that can naturally adjust the angle of the back and the left wave according to the user's weight or sitting position.

Conventionally, an armchair generally has the seat plate tilted backwards about 10-15 ° horizontally, and the obtuse angle between the seat plate and the back plate is about 110-120 °. The adjustment lever was able to adjust the angle change of the back plate.

However, in these cases, the angle change is not only limited, but even if the angle can be adjusted, it is impossible to achieve natural and detailed angle conversion in lying down or sitting state, even though the angle is changed step by step.

In other words, the stepless angle change is difficult to obtain an effective comfort.

The present invention has been made in order to solve such a problem in the prior art, so that the back plate and the seat plate capable of articulation are joint motion and sliding friction movement in the state supported by two points by a separate support means from the bottom, This is achieved by applying a distributed weight to the seat plate to allow for a natural and stepless angle shift in the lying down or sitting state.

The present invention will be described in detail with reference to the accompanying drawings.

1 to 5, 1 is a back frame, 1 'is a back plate on a back frame 1, 2 is a seat frame, and 2' is a left wave on a seat frame 2. , 3 is a T-shaped support frame, 4 is a leg frame, and 4 'is a leg covered with the leg frame 4.

The back frame 1 is a U-shaped spring (5) is installed at equal intervals in the middle, and both sides of the lower side is rotatably coupled with the arm (6) of the arm portion 6 of the T-shaped support frame (3) first The shaft 8 is formed, and both sides of the lower end of the back frame 1 are formed with a stud 9, and the pin 10 is rotatably coupled with the seat frame 2 and the second shaft 11 is formed by this coupling. Will form.

Armrest frame 12 is formed at both sides of the seat frame frame 2 and springs 51 are installed at equal intervals in the middle, and the rear end frame is formed with a dowel 91 on the back end frame so as to be rotatable with the back frame frame 1. ) Coupling A second shaft 11 is formed, and a c-shaped connector 13 is formed at the front center thereof so that the friction piston 14 and the pin 101 are coupled to each other to form a third shaft 15.

The T-shaped support frame 3 has a T-shape in which a central axis 16 is formed at the center thereof, a cylinder 17 having a friction piston 14 at the front thereof, and a back frame 1 and the first shaft described above. An arm portion 6 for forming and joining (8) is formed.

One end of the carriage piston 14 in the cylinder 17 is coupled to the connector 13 and the pin 101 of the seat frame frame 2 and the other end is formed with an extended end 18 for stopping the sliding motion in the cylinder 17. On one side of the cylinder 17, a fixed handle 19 for manually stopping the sliding movement of the friction piston 14 in the cylinder 17 is screwed.

The leg frame 4 has a bearing 20 for rotatably supporting the central axis 16 in the center as usual.

All the above-mentioned materials are made of a sheet which is covered with the back frame 1, the seat frame 2 and the leg frame 4 if it is a metal to form the back plate 1 ', the seat plate 2' and the legs 4, respectively. The material may be selected and implemented as leather or similar material in which the elastic member is embedded.

The present invention is basically configured such that when folded the seat plate frame 2 has an inclination of about 10 ° in the horizontal plane, and the inside angles of the back plate frame 1 and the seat plate frame 2 constitute about 110 °.

In addition, the cylinder 17 and the friction piston 14, which play an important role in the present invention, are configured to have an inclination of about 18-22 ° in the horizontal plane.

The angle was determined by the experiment to the angle of the range that can perform the most suitable friction force and sliding motion.

The present invention is assembled in the following order and decomposed by chronological order.

As shown in FIG. 4a, the pin 10 is fitted between the protrusions 91 protruding from the back plate 1 ', and the T-shaped support frame 3 is formed on both sides of the back plate 1' as shown in (b). Fasten both ends of the arm part 6 of the arm as a bolt (7) and couple the friction piston 14 to the connector (13) protruding from the lower surface of the seat plate (2 ') by the pin (101), the end of the coupling (4 ') When the central axis 16 is inserted in the center, the assembly is completed, and when the work proceeds in the reverse order, disassembly is achieved.

Based on FIG. 2 and FIG. 3, the effect of this invention is demonstrated. When folded, that is, when the cabinets of the back frame (1) and the seat frame (2) maintain their angles of 110 ° and the weight is loaded, the friction piston (14) starts to slide when the forces A and C are equal or greater than A. It doesn't work.

In the friction piston 14, the point where a static friction or dynamic friction force acts the most in a relationship with the cylinder 17 with or without sliding motion is point a and point b.

In this state, when the force B becomes larger than A and C and the force A becomes weaker than C, the back frame (1) and the seat frame (2) start to unfold.

In other words, in the above state, since the frictional force of point a and point b is lower than the forces B and C, the friction piston 14 starts the sliding motion, and this movement is at its maximum. Will be converted to the position of the virtual line.

That is, the interior of the back frame (1) and the seat frame (2) is about 70 degrees, the joint motion of the back frame (1) and the seat frame (2) by the above motion is the first axis (8) and The second shaft 11 and the third shaft 15 are rotated simultaneously.

When folded in the unfolded state, force A is greater than C and force B is less than C.

At this time, the sliding motion performed by the friction piston 14 also proceeds in the opposite direction at the same level as the above-described dynamics when unfolded.

The dynamics when unfolded and the dynamics when folded can be set up to a differential coefficient that is conscious of angular transformation by weight.

Such the present invention is easy to disassemble and have the effect of performing a very light and smooth angle conversion only by the weight in a sitting or lying state.

Claims (3)

In an armchair with springs 5, 51 installed and a central axis 16 pivotable on a bearing 20 in the center of the die frame 4 and having an armrest frame 12, the back frame 1 and The seat plate frame 2 is rotatably coupled to form a first shaft 8, and the back plate frame 1 and the seat plate frame 2 are both ends of the T-shaped support body 3 having a central axis 16 at the center thereof. The second shaft 11 and the third shaft 15 are coupled to each other by the arm portion 6 and the friction piston 14 capable of sliding friction, respectively, the first shaft 8 and the second shaft. Automatically adjustable armchair by weight characterized in that the rotational movement of the shaft (11) and the third shaft (5) and the sliding movement of the friction piston (14) is started when the force A or B is large. The friction piston (14) according to claim 1, wherein the friction piston (14) is made to slide in the cylinder (17) on one side of the T-shaped support frame (3) and to be stopped by the fixing handle (19), and the slope of 18-22 ° C in the horizontal plane. Self-adjusting armchair by weight, characterized in that to have. The pin 10 according to claim 1, wherein the pins 10 are projected by protruding the pins 9 and 91 into the back plate 1 'which is seated on the back frame 1 and the seat plate 2' which is seated on the left frame 2, respectively. The connector 13 is projected to the seat plate 2 'so that the friction piston 14 of the T-shaped support frame 3 and the pin 101 are coupled to each other, and the arm part 6 is formed on the back plate 1'. Automatically adjustable armchair by weight, characterized in that the bolt (7) is coupled to both sides and the central shaft (16) is fitted in the center of the leg (4 ') seated on the leg frame (4).