KR-102961428-B1 - Chair for a lumbar support

Abstract

The present invention relates to a lumbar support chair formed to support the lower back when seated. Specifically, the invention provides a lumbar support chair comprising: a seating portion with a movable support attached to the lower part of a seat plate; a backrest portion attached to the lower part of the seat plate of the seating portion; and a lumbar support portion attached to the lower part of the seat plate of the seating portion and located on the lower side of the backrest portion. The lumbar support portion comprises: a support plate attached to the seat plate; a pair of left and right connecting rods bent from the support plate toward the lower side of the backrest portion, each upper end of which is bent in the left and right directions to form a horizontal projection; and a support plate formed with projection coupling holes on both sides of the back surface to accommodate the horizontal projection, and a plurality of projection coupling holes arranged vertically to adjust the coupling height.

Inventors

• 박경준

Assignees

• 주식회사 퍼스퍼

Dates

Publication Date

20260507

Application Date

20240807

Claims (2)

1. A seating portion with a movable support attached to the lower part of the seat plate; A backrest portion coupled to the lower part of the seat plate of the above-mentioned seating portion; and It includes a lumbar support portion that is coupled to the lower part of the seat plate of the above-mentioned seating portion and is located at the lower part on the inner side of the backrest portion; The above-mentioned waist support part is, Support plate connected to the seat plate; A connecting member comprising a pair of left and right members bent from the support plate toward the inner lower portion of the backrest, with each upper end bent in the left and right directions to form a horizontal projection; and A base plate comprising: protrusion coupling holes formed on both sides of the back surface to accommodate the horizontal protrusion, and a plurality of protrusion coupling holes arranged vertically to adjust the coupling height; The above-mentioned base plate is composed of a front plate and a rear plate, and the front plate has a front protrusion formed thereon that supports the front of the horizontal protrusion while forming the front of the protrusion coupling member, and the rear plate has a rear groove formed thereon that surrounds the rear of the horizontal protrusion while forming the rear of the protrusion coupling member. The above rear plate is formed to be fastened and assembled with the above rear plate in a separated state, including a rear groove portion on either the left or right side. It is configured to include an elastic member that is fitted and coupled to the horizontal projection and elastically supports the base plate while inserted into the projection coupling member, and It is configured to include a vibration generating means installed between the left and right connecting rods and for transmitting vibration to a base plate through the connecting rods, and A heating means or a blowing means is installed between the front plate and the rear plate of the above-mentioned base plate, and A sleeve for applying power is formed on the outer surface of the end of the horizontal projection of the above-mentioned connecting member, and a wire is connected to the connecting member through a hollow formed along the center, and the end of the wire is connected to the sleeve, while, A lumbar support chair characterized by having a contact terminal coupled to the front protrusion of the above-described front plate for receiving power through contact with the above-described sleeve.
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Description

Chair for a lumbar support The present invention relates to a chair for lumbar support formed to support the lower back when seated. Korean Patent No. 2314380 (October 21, 2021) describes an invention of a 'lumbar support for a chair,' wherein the invention comprises 'a fixing part (110) fixed to the front of an inner frame (11) of a backrest (10), a first connecting part (120) with a rear end inserted into the inner front of the fixing part (110) and moving in the up-and-down direction of the chair by a height adjustment means (150), a second connecting part (130) with a rear end fixed to the front of the first connecting part (120) by a fastening means (170), and a support part (140) with a rear end inserted into the inner front of the second connecting part (130) and moving in the front-back direction of the chair by a depth adjustment means (160) to support the lumbar spine,' wherein the height adjustment means (150) comprises a plurality of step adjustment grooves (151) formed on both sides of the front of the inner frame (11) and the first The connecting part (120) is configured to include elastic protrusions (152) formed on both sides at the rear end of the connecting part (120) and pressed into one of the step adjustment grooves (151); the depth adjustment means (160) is configured to include a nut part (161) inserted and fixed to the inner side of the rear end of the supporting part (140), a bolt part (162) having its front end connected to the nut part (161) by screw threads and its rear end penetrating the inner side of the second connecting part (130), and a knob part (163) fixed to the rear end of the bolt part (162) and rotating between the first connecting part (120) and the second connecting part (130); and the fastening means (170) is configured to include a hook part (171) protruding from the upper and lower sides of the front end of the first connecting part (120), respectively, and penetrating the upper and lower sides of the rear end of the second connecting part (130), respectively, into which the hook part (171) is inserted and fixed. It is a configuration that includes a catch groove (172). Conventional lumbar supports like this are inconvenient to use, and the height adjustment mechanism is structurally weak and easily damaged. In addition, there is a high possibility that the lumbar support may be pressed or subjected to pressure during use, causing it to deform from the adjusted position to a different position. FIGS. 1 and FIGS. 2 are explanatory diagrams illustrating the external appearance of a chair to which the present invention is applied. FIGS. 3 to 6 are diagrams illustrating the configuration and operation of a lumbar support portion of a chair to which the present invention is applied. FIGS. 7 to 10 are explanatory diagrams illustrating the configuration of the main part of a chair to which the present invention is applied. A preferred embodiment of the present invention will be examined in detail with reference to the attached drawings. As shown in FIGS. 1 to 10, the lumbar support chair of the present invention comprises: a seating portion (100) with a movable support attached to the lower part of a seat plate; a backrest portion (200) attached to the lower part of the seat plate of the seating portion; and a lumbar support portion (300) attached to the lower part of the seat plate of the seating portion and located on the lower part of the backrest portion. The lumbar support portion comprises: a support plate (310) attached to the seat plate; a connecting member (320) consisting of a pair of left and right members bent from the support plate to the lower part of the backrest portion, with each upper end bent in the left and right direction to form a horizontal projection (321); and a support plate (330) formed with projection coupling members (331) formed on both sides of the back surface to allow the horizontal projection to be inserted, and a plurality of projection coupling members arranged vertically to adjust the attachment height. As shown in FIGS. 1 and 2, the above-described seating portion (100) is composed of a seat plate (110) including a cushion and a movable base (120) having a plurality of wheels radially connected to it to facilitate movement while maintaining the seat plate at a certain height. The seat plate (110) is pivotally connected to the top of the movable base (120) to allow it to rotate smoothly left and right. The backrest portion (200) is coupled to the lower part of the seat plate (110) of the seating portion (100) as shown in FIGS. 1 and 2. At this time, a headrest may be formed on the upper part of the backrest portion (200) as shown in the drawing. As shown in FIGS. 1 and 2, the above-mentioned waist support (300) is formed to be connected to the lower part of the seat plate (110) of the seating part (100) and positioned on the lower part inside the backrest part (200) to support the waist of the seated person. The above-described waist