KR200234069Y1 - Chair Having support department of waist - Google Patents

Abstract

The chair having a waist support portion of the present invention has a stretchable waist support plate fixed to the bottom of the backrest inclined backwards, and one end of the waist support plate to automatically interlock the waist support plate according to the operation of the backrest. It is fixed and extends to the bottom and the other end is composed of an operating connection portion fixed on the fixed frame fixed to the lower end of the backrest and the seat plate is fixed, the operation connection end is fixed to the upper end of the backrest plate and extends downward The other end is fixed to the fixed frame to which the seat plate is fixed, and the connection wire is inserted and one end is fixed and positioned below a certain distance from the top of the connection wire, and the other end is fixed to the bottom or the fixed frame of the backrest. When the backrest rotates, the connecting wire moves up and down according to the distance between the fixed frame and the bottom of the backrest. As a result, the lower back plate is bent or extended.

Description

Chair with waist support {Chair Having support department of waist}

The present invention relates to a chair having a waist support, and more specifically, when the backrest is inclined backward when the chair is operated, the lower back support is installed in the lower part of the back so as to protrude convexly forward. It is operated to support the wearer's waist comfortably.When returning to the original position, the waist support part is extended to return to the original position, and it is automatically connected to the movement of the backrest, which is convenient to use and promotes the health of the wearer. The present invention relates to a chair having a lower back support which works.

In general, a chair that is widely used is widely used to operate the chair so that the back of the chair is folded back when rested and the work is returned to its original position in order to improve the convenience of chair use. When the chair is operated such that the backrest is operated or the seat plate and the backrest of the chair are integrated, the user's body is fully flipped when the chair is flipped backwards. There is no part to rest comfortably, even if there is a part that supports the lower back part, regardless of the operation of the chair, users operate the backrest plate by turning the handle by hand, which makes the user uncomfortable to use effectively There was this.

The purpose of the present invention is to solve this problem, and to support the spine, which is the most important part of the human body, more comfortably, the lower back support supporting the waist according to the inclination of the seat of the chair is automatically operated. It is to provide a chair having a back support that can support the waist and improve the health of the chair user and easily operated to increase the ease of use.

This object of the present invention is an elastic waist support plate fixed to the bottom of the backrest inclined backwards, and one end is fixed to the top of the backrest plate and extends downward to automatically interlock the waistrest plate according to the operation of the backrest. The other end is hingedly fixed to the lower end of the backrest and is composed of an operation connector fixed on the fixed frame is fixed to the seat plate, the operation connector is fixed to the upper end of the lower back plate and extended to the lower seat plate is fixed The other end of the connection wire is fixed to the fixed frame, the connection wire is inserted and one end is fixed to be positioned below the predetermined distance from the top of the connection wire and the other end is fixed to the bottom of the backrest or the fixed frame is fixed when the backrest is rotated As the connecting wire moves up and down according to the distance between the frame and the lower back, It is achieved by a chair having a lumbar support according to the present invention which performs the bending or spreading of the plate.

With reference to the accompanying drawings, a chair having a waist support according to the present invention will be understood more clearly the features and advantages by the embodiments described in detail below.

1 is a schematic perspective view of a chair having a waist supporter according to an embodiment of the present invention;

FIG. 2 is a schematic longitudinal cross-sectional view of a chair having a lumbar support shown in FIG.

Figure 3a is a cross-sectional view showing the operation of the waist support the operation of the back frame inclined

Figure 3b is a cross-sectional view showing the operation of the waist support the operation of the back frame back.

Figure 4a is a cross-sectional view showing the operation of the chair according to another embodiment of the present invention operation of the back frame inclined

Fig. 4B is an operation diagram when the chair of Fig. 4A is returned.

Explanation of symbols on the main parts of the drawings

1. Fixed frame 2. Back frame 3. Back support

31. Lumbar support plate 32. Operating connection 32a. Connection wire

32b. Connector

Chair (A) having a waist supporter according to the present invention, as shown in the figure, the backrest frame (2) is attached to the backrest 20 is fixed on the fixed frame (1) for fixing the seat plate (10) It is fixed rotatably. At the lower end of the backrest frame 2 of the chair A, the lower back support convexly protrudes during the inclined operation of the backrest frame 2 and stretches upon returning to the original position of the backrest frame 2 and elastically returns back to its original position. The supporting part 3 is provided.

The lower back support 3 is an elastic waist support plate 31 fixed to the bottom of the backrest 20 of the backrest frame 2 and the waistrest plate 31 automatically according to the operation of the backrest frame 2. One end is fixed to the upper end 31a of the waist support plate 31 and extends downward so as to be interlocked with the other end to an operation connecting part 32 fixed on the fixing frame 1 which hinges and fixes the backrest frame 2. It is composed.

The operation connecting portion 32 is one end is fixed to the upper end of the backrest plate 31 and extends to the lower connection wire (32a) the other end is fixed to the fixed frame (1) is fixed to the back frame 2 inclined rotation And, the connection wire (32a) is inherent to pass through and one end is fixed to be located at a predetermined distance downward from the top of the connection wire (32a) and the other end is fixed to the lower or fixed frame (1) of the backrest frame (2) In this embodiment, it is composed of a flexible connecting pipe (32b) fixed to the lower part of the backrest frame (2). In the present embodiment, the operation connecting portion 32 is described as consisting of a connecting wire 32a and a connecting pipe 32b, but can also be configured as a connection wire only.

One end fixed on the waist support plate 31 of the connection wire 32a is installed to have an exposed distance L in which a fixed end of the connection pipe 32b is exposed at a predetermined distance in a normal position. The exposure distance L of the connection wire 32a is equal to or slightly longer than the maximum separation distance L 'at which the fixed frame 1 and the backrest frame 2 are maximized during the tilting operation of the backrest frame 2. It is preferably formed. If the exposure distance L is shorter than the maximum separation distance L ', a heavy load is applied to the connection wire 32a, which may cause a problem such as damage to the connection wire 32a.

Chair (A) having a lower back support according to the present invention having such a structure, as shown in the figure, when the wearer is seated and leans back the backrest frame (2) for rest, the backrest frame (2) is When it is flipped back, since the lower portion of the backrest frame 2 having one end fixed on the fixed frame 1 moves downward, the separation distance L 'is widened, so that it is fixed to one end of the backrest plate 31. As the connection wire 32a is pulled downward, the lower back plate 31 is pulled downward, so that the elastic waist back plate 31 is bent forward and convexly protruded to a position that comfortably supports the waist of the seated person. It will protrude. The protruding operation of the backrest plate 31 is the same when the backrest frame 2 is turned over and ends in the same state. When the backrest frame 2 returns to its original position, the separation distance L 'is returned. Since the connection wire 32a is reduced in tension, the elastic backing force is applied to the curved backrest plate 31 which protrudes forward, and is gradually extended to return to its original position.

Figure 4a, 4b is an operation of the chair (A) according to another embodiment of the present invention, the connection wire (32a) of the operation connecting portion 32 is fixed to the lower end of the waist support plate 31 is extended a predetermined length upwards A structure having a structure that is bent downwardly, when the wearer is seated and leans back the back frame 2 to rest, the back frame is fixed on the fixed frame 1 when the back frame 2 is turned back. Since the lower part of the frame 2 moves downward, the separation distance L 'is widened, so that the connection wire 32a fixed to the lower end of the backrest plate 31 is pulled upward and the backrest plate 31 is pulled upward. Pulled up so that the elastic waist support plate 31 is convexly projected forward so that it is protruded to a position that comfortably supports the waist of the seated person. This protruding operation is maintained in the same state when the back frame 2 is ended and the back frame 2 is returned to its original position. When the back frame 2 returns to its original position, the connecting wire 32a is released from the tensioned state. The lumbar support plate 31 protruded to be protruding is to be returned to its original position while the elastic restoring force is gradually extended.

The chair having a back support frame according to the present invention is bent back to the seat of the seat of the seat supporter is automatically convex protruding back to the seat of the seat of the back support frame when the back frame is tilted back and the back of the back frame When returning to the original position, the waist support plate is stretched by the elastic restoring force, which is very convenient to use and has an excellent effect of protecting the user's waist.

Claims (5)

A chair in which a backrest frame having a backrest attached to a fixed frame for fixing a seat plate is rotatably fixed to the front and rear, A lower back support is provided at the lower end of the back frame of the chair to protrude convexly during the tilting operation of the back frame and to extend back when the back frame is returned to its original position and to elastically return to its original position. Chair equipped with wealth. The waist support plate of claim 1, wherein the waist support plate is fixed to the lower end of the backrest frame of the backrest frame and one end fixed to the upper end of the backrest plate to automatically interlock the waistrest plate according to the operation of the backrest frame. The lower end is extended to the lower end and the other end is composed of the operation connection is fixed on the fixed frame, the back support plate is bent or extended as the operation connection is lifted and operated in accordance with the space between the fixed frame and the lower back during rotation of the backrest Chair with auxiliary support. According to claim 1, The connecting portion is one end is fixed to the upper end of the lower back plate and extends to the lower end and the other end is fixed to the fixed frame, the connection wire is inherent to pass through one end of the upper end of the connection wire Positioned below and fixed at a certain distance from the other end of the chair having a waist support, characterized in that consisting of a connector fixed to the lower portion of the fixed frame or backrest frame. The chair having a lower back support according to claim 1, wherein one end of the actuating connecting part is fixed to an upper end of the lower back support plate and extends downward, and the other end is fixed to the fixed frame. According to claim 2, The connecting portion is one end is fixed to the lower end of the backrest plate and the other end is fixed to the fixed frame, the connection wire is inherent to pass through and one end is a certain distance downward from the top of the connection wire Positioned and fixed to the other end of the chair having a waist support, characterized in that consisting of a connector fixed to the lower portion of the frame or back frame.