KR101012520B1 - Waist backing chair with complex elastic supporter - Google Patents

Abstract

The present invention relates to a backrest chair, in which the backrest (3) is coupled to the backrest fixing plate (1) by a supporter (supporter), the supporter side elastic arm extending downward from the backrest fixing plate (1) long (7), a torsion coil spring (5) continuously formed at the lower end of the backrest-side elastic arm (7), and formed to be inclined upwardly forward from the torsion coil spring (5), and at the end of the back (3). Composed of the waist side elastic arm (9) assembled, the support direction and the support force for the seat back of the waist 3, the restoring force of the torsion coil spring (5) and the restoring force of the back side elastic arm (7) And by the restoring force of the elastic arm (9) and the lower back side, so that the seated person sits close to the lower back (3) close to the part that he wants to be supported, the torsion coil spring (5), Receiving-side elastic arm 7 and the receiving-side waist resilient arms (9) are combined to function as characterized by the possible to maintain the bearing capacity of that part to the end.

Chair, waist

Description

Composite elastic support backrest chair {WAIST BACKING CHAIR WITH COMPLEX ELASTIC SUPPORTER}

The present invention relates to a backrest chair, and more particularly, when a user selects and closes to the waist to be supported while seated, the user does not miss the selection point, while following the seating, and then the selection point is completed in the horizontal direction, the vertical direction, and the following. It relates to a composite resilient support backrest chair that can be supported by a composite resilient in the rotation direction.

In general, office workers or students who sit on chairs for long periods of time do not have a special device to support the lower back part. Nevertheless, many people in most cases complain of back pain. Recently, chairs with a backrest have been manufactured and sold, but the support point of the backrest does not become a desired point for the seater, and it does not reflect the human characteristics of the seater by supporting only a certain point with a predetermined direction and resilience. have.

Conventional representative backrest chairs or auxiliary backrest chairs are disclosed in Korean Patent Publication No. 10-459987. The invention of the 10-459987 is a height adjustment rod insertion portion is formed in the center of the backrest support is formed with a fastening bolt hole, the bottom of the spring support plate is supported to support the engaging portion of the spring, both sides of the spring support plate bolt through ring is It is composed, and the outer peripheral surface of the connecting tube formed on the upper backrest connecting rod is fitted with a spring of elasticity twisted in the opposite direction to each other centering on the center of the engaging portion, both ends of the spring is inserted into the spring insertion hole formed in the auxiliary backrest connecting rod The auxiliary backrest connecting rod is coupled to the backrest support by a bolt fixed through a bolt through ring and connecting pipe on one side and a bolt through ring on the other side and fixed with a nut, and a pivoting groove is provided in the lower center of the auxiliary backrest connecting rod. Rotating bolt holes are formed on both sides of the rotational fitting groove, and the auxiliary backrest is formed on the back side. Disclosed is a chair in which a pivoting hole formed with a pivoting bolt hole is formed in a pivoting groove fitting groove and coupled to an auxiliary backrest connecting rod by a pivoting bolt and a nut. According to the invention No. 10-459987, a spring-wound connector is inserted into the bolt through ring of the lower backrest support to the hinge function, and the auxiliary backrest connector is rotated around the connector, and the auxiliary backrest connector end The backrest has a hinged structure. In addition, the connection pipe is provided with a spring, and is configured to provide a restoring force in the upward rotation direction when the auxiliary backrest rotates downward about the connection pipe. Therefore, since the movement of the auxiliary backrest can only rotate about the connecting tube, the present invention supports only a predetermined position regardless of where the user wants to be supported, and the auxiliary backrest is disposed only on the rotational trajectory. It provides only elastic force in the direction. That is, the user may not select the support point of the auxiliary backrest in the seated state of the auxiliary backrest, and may not adjust the support position in the vertical direction or the vertical direction. Therefore, even if the seated person is in close contact with the backrest at the waist position to be supported in the seating process, the seatback supports only the other position after the seating, that is, the position set when the chair is manufactured.

Further, in the invention of No. 10-459987, since the bearing force is generated only by the restoring force in the rotational direction, the bearing force in the horizontal and vertical directions cannot be exhibited. Therefore, the seated person may not feel that his waist is supported in the horizontal direction and the vertical direction, and feels only an unstable back pressure.

According to the present invention to solve the problems of the above-mentioned conventional spring-elastic support backrest chair, when the user selects and close the waist close to the support to be supported while sitting, while not following the selection point, while completing the seating, the selection point It is an object of the present invention to provide a composite resilient support backrest chair that can support the composite resilient in the horizontal, vertical and rotational directions.

The backrest chair according to the present invention for achieving the above object is a backrest elastic arm that extends downward from the backrest fixing plate and the backrest when the backrest is coupled to the backrest fixing plate by a supporter. The torsion coil spring continuously formed at the lower end of the side elastic arm, and is formed to be inclined upwardly forward from the torsion coil spring, the end is characterized by consisting of the waist side elastic arm assembled with the waist.

According to the present invention having the above-described configuration, the supporting direction and the supporting force of the seat back of the waistrest are formed by the combined action of the restoring force of the torsion coil spring, the restoring force of the backrest elastic arm and the restoring force of the backrest elastic arm. Therefore, when the seated person sits in close contact with the waist of the part that he wants to receive most of his waist, the torsion coil spring, the back elastic arm and the lower elastic arm act in combination to maintain the supporting force to the end. . That is, since the horizontal restoring force of the backrest elastic arm and the rotational restoring force of the torsion coil spring and the vertical restoring force of the backrest elastic arm act on the chair's waist, the seated person's waist is in the horizontal, rotational direction and vertical. Feeling supported in both directions, the effect is that a very stable and comfortable sitting. In addition, according to the present invention, the structure is very simple, the structure is simple, the production cost is low, and because of the simple structure can provide a very high durability backrest chair.

With reference to the accompanying drawings, preferred embodiments of the composite resilient support backrest chair according to the present invention will be described in detail.

Figure 1 is a side view of the supporter according to the invention, Figure 2 is a front perspective view of the supporter according to the invention, Figure 3a is a rear perspective view of the supporter according to the invention, Figure 3b is a rear exploded perspective view of the supporter according to the invention 4 is a front perspective view illustrating the supporter assembled to the backrest fixing plate.

In the backrest chair according to the present invention, the backrest supporters (7, 5, 9) for coupling the backrest (3) to the backrest fixing plate (1) of the chair has a complex three-dimensional force on the backrest (3). Designed to work, the waistrest 3 is characterized by allowing the chair occupant to substantially support the waist as desired.

To this end, as shown in Figures 1 to 4, the back-side elastic arm (7) is formed long in the vertical direction at both ends of the torsion coil spring 5 to be fixed to the chair back fixing plate (1), the torsion coil spring (5) is formed in the middle of the waist side elastic arm (9) in the oblique direction and fixed to the back of the waist (3). As shown in Figs. 1 to 3b, the backrest elastic arm 7, the torsion coil spring 5 and the waist elastic arm 9 are formed of a straight line connected in series. It is preferable to bend and shape. In addition, the backrest side arm (7), the torsion coil spring (5) and the waistband side arm (9) is preferably formed to have a double structure connected to the middle. In the figure, the middle part of the back side arm 9 is exemplarily connected, but it may be molded so that the tip of the back side arm 7 is continuously connected.

As shown in Figures 3a and 3b, the backrest 3 can be molded in a variety of materials and shapes, the rear end of the supporter 19 is preferably attached to facilitate assembly with the backrest supporter. The front end of the lower arm 9 of the supporter is coupled to the connector 9 by a washer 13 and a screw 15.

5 is a perspective view of a composite resilient support backrest chair according to the present invention.

As shown in FIGS. 4 and 5, a bracket 11 having a longitudinal residual hole 25 is attached to the front end of the backrest arm 7, and the bracket 11 is also attached to the front surface of the backrest fixing plate 1. ) To form a connection part of a suitable form, and to which the bracket 11 is fastened to the bolt 17.

As shown in FIG. 4, at this time, the coil spring 5 is disposed below the lower end of the backrest fixing plate 1 so that when the seated person sits while keeping the waist 3 in close contact with the desired point, Allow the torsion spring 5 to run backwards. In this case, when the seated person is seated on the chair, the backrest 3 moves elastically with the human body in the space without departing from the point where the seated person first adhered to, so that the seated seat is elastically even after completing the seating. I can support it.

That is, the feature of the backrest chair according to the present invention is in the structure and the method of arrangement of the supporters 7, 5, 9 coupled to the backrest fixing plate 1. The supporter side elastic arm 7 extending downward from the backrest fixing plate 1, the torsion coil spring 5 continuously formed at the lower end of the backrest side elastic arm 7, and the coil spring 5 It is formed to be inclined upwardly from the front, and at its end is composed of the waist side elastic arm 9 assembled with the waist 3, the support direction and the supporting force for the seat occupant waist of the waist 3 is twisted The restoring force of the coil spring 5 and the restoring force of the back elastic arm 7 and the restoring force of the back elastic arm 9 are formed so that the seated part is most likely to be supported by the waist. When seated in close contact with the support 3, the torsion coil spring 5, the backrest elastic arm 7 and the backrest elastic arm 9 act in combination to maintain the supporting force of the portion to the end.

As shown in FIG. 5, by coupling the backrest 3 by the composite resilient supporters 7, 5, and 9 to the backrest fixing plate 1 of the chair, the load on the lumbar spine according to the physical characteristics of the seated person. Finding a point in the seating process to minimize the position of the backrest along the lumbar curve, the elasticity of the backrest arm (7), torsion coil spring (5) and waistband arm (9) Since the seater is working as it is adjusted, the backrest does not press the unnecessary part of the seater and is provided with lumbar support that is most suitable for the body condition of the seater.

6a to 6c is a state diagram used in the composite resilient support backrest chair according to the present invention.

Such effects of the present invention will be more apparent with reference to FIGS. 6A to 6C.

Figure 6a shows a state in which the seated person is brought back into contact with the waist point to be supported for the seating. As shown in Fig. 6a, the torsional coil spring 5 of the backrest chair according to the invention is located far below the backrest fixing plate 1, and the backrest 3 is above the torsional coil spring 5 Is placed. The backrest resilient arm 7 extends vertically from both ends of the torsion coil spring 5 and is coupled to the backrest fixing plate 1, and the backrest resilient arm 9 is upwardly forward from the middle of the torsion coil spring 5. It is extended to be inclined to be coupled to the waistrest (3).

6B illustrates a step in which the seated person comes into close contact with his / her back toward the chair back after contacting the waist portion to be supported by the backrest. At this time, the lower part of the backrest side elastic arm (7) is elastically bent rearwards, when the degree of deflection reaches the limit only acts as a restoring force toward the front. At this time, the back of the seated person is almost in close contact with the chair back, but the hips and legs are somewhat separated from the seat plate.

FIG. 6C shows a step in which the seated person is seated on the seat plate 23 in a state where the back is in close contact with the back 3. In the seating process, the torsion coil spring 5 is released, and the waist elastic arm 9 is bent downward to be almost horizontal, and in the process, the waist 3 is initially positioned at the waist point contacted by the seated occupant. The seated person is very comfortable because the backrest is supported by the horizontal restoring force of the backrest resilient arm 7 and the rotational restoring force of the torsion coil spring 5 and the vertical restoring force of the backrest arm 9 You will have a stable sitting posture.

The conventional backrest chair has a structure capable of supporting the seater's waist only in the rotational direction, whereas as described above, the backrest chair according to the present invention supports the seater's waist in three directions: horizontal, vertical and rotational directions. Since it has a structure that can be, while the waist support by the conventional backrest chair is unstable and did not give the seated person a sense of stability, the backrest chair according to the present invention is to give a very stable support to the seated person. In addition, the present invention has a very simple structure, simple structure, low production cost, and very durable due to the simple structure.

1 is a side view of a supporter according to the present invention.

2 is a front perspective view of the supporter according to the present invention.

3a is a rear perspective view of the supporter according to the present invention;

Figure 3b is a rear exploded perspective view of the supporter according to the present invention.

4 is a front perspective view illustrating the supporter assembled to the backrest fixing plate.

5 is a perspective view of a composite resilient support backrest chair according to the present invention.

6a to 6c is a state diagram used in the composite resilient support backrest chair according to the present invention.

            Explanation of symbols on the main parts of the drawings

1: backrest fixing plate 3: backrest

5: Torsion coil spring 7: Back support elastic arm

9: back side elastic arm 11: bracket

13: washer 15: screw

17 bolt 19 connector

21: back 23: seat

25: remnant air

Claims (2)

In coupling the backrest 3 to the backrest fixing plate 1 by a supporter, the backrest side elastic arm 7 extending downward from the backrest fixing plate 1 and the backrest side elastic arm. Torsion coil spring (5) continuously formed at the lower end of (7), and the waist elastic side arm (9), which is formed to be inclined upwardly forward from the torsion coil spring (5), and at the end of which the hip support (3) is assembled. ), The support direction and the support force of the seat back of the waistrest 3 are the restoring force of the torsion coil spring 5 and the restoring force of the backrest elastic arm 7 and the backrest elastic arm 9 When the seated person is seated in close contact with the backrest 3, the torsion coil spring 5, the backrest elastic arm 7 and the backrest side are formed by the combined action of the restoring force. Shout Cancer (9) This complex acts as a composite resilient support bustle of the chair wherein one can maintain the force of that section to the end. The method of claim 1, The backrest side elastic arm (7), the torsion coil spring (5) and the backrest side elastic arm (9) is a composite elastic support waistrest, characterized in that the bending by forming a single steel wire of a straight line connected in series chair.

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