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KR-20260067655-A - CHAIR

KR20260067655AKR 20260067655 AKR20260067655 AKR 20260067655AKR-20260067655-A

Abstract

The chair according to the present invention has the advantage of easy replacement of the backrest portion because the backrest connector connecting the backrest frame and the backrest post comprises a coupling member having an elastic coupling projection protruding forward that is elastically coupled to a coupling hole formed in the backrest frame, and a locking member installed on the outer surface of the coupling member to lock or unlock the elastic coupling projection to the coupling hole.

Inventors

  • 김미래
  • 서다찬

Assignees

  • 주식회사 시디즈

Dates

Publication Date
20260513
Application Date
20241106

Claims (12)

  1. Backrest frame; A backrest post positioned at the rear of the above backrest frame; and A backrest connector connecting the backrest frame and the backrest post; including The above backrest connector is, A coupling member having an elastic coupling projection formed protruding forward that is elastically coupled to a coupling hole formed in the backrest frame, and A chair comprising a locking member installed on the outer surface of the above-mentioned coupling member to lock or unlock the elastic coupling projection into the coupling hole.
  2. In claim 1, A spiral groove is formed on the outer surface of the above-mentioned coupling member, extending to the outer surface of the above-mentioned elastic coupling projection, and A chair having a spiral projection formed on the inner surface of the locking member that engages with the spiral groove.
  3. In claim 2, The above locking member is, When rotated in one direction, the spiral projection engages with the spiral groove formed on the elastic coupling projection, thereby pressing the elastic coupling projection inward to lock the hook formed on the elastic coupling projection in a state where it is inserted into the coupling hole. A chair that, when rotated in the opposite direction, the spiral projection comes out of the spiral groove formed in the elastic coupling projection, releasing the pressure of the elastic coupling projection to unlock the hook so that it can be separated from the coupling hole.
  4. In claim 2, A rear connecting part is formed protruding from the rear surface of the above-mentioned backrest frame, and A chair having a seating groove and a coupling hole formed on the outer surface of the rear coupling portion, wherein the elastic coupling projection is seated thereon.
  5. In claim 4, In the rear coupling portion above, a guide groove is formed on the outer surface within the seating groove to guide the forward and backward movement of the hook, and The above coupling hole is a chair formed at the front end of the above guide groove.
  6. In claim 1, The above-mentioned connecting member is formed in a tubular shape with an open rear surface, and A chair having an elasticity-giving groove formed on the inner surface of the coupling member, extending to the rear end of the coupling member at a position corresponding to the elastic coupling projection.
  7. In claim 1, A center tube is formed protrudingly in the central part of the front surface of the above-mentioned connecting member, and The above elastic coupling projection is formed on the front surface of the coupling member, spaced radially outward from the center tube.
  8. In claim 1, A rotation-restricting projection is formed on the front surface of the above-mentioned locking member, and A chair having an arc-shaped rotation-regulating groove formed on the rear surface of the backrest frame into which the rotation-regulating projection is inserted.
  9. In claim 7, The above backrest connector is, A fixed link member coupled to the above-mentioned backrest post, and A chair further comprising a rotating link member coupled to the fixed link member so as to be rotatable with a horizontal axis as a rotational center and coupled to the center tube.
  10. In claim 9, A soft portion is formed in the above-mentioned rotating link member that contacts the front surface of the above-mentioned fixed link member, and The above soft part is a chair that deforms when the above-described rotating link member is rotated by the user's back load applied to the backrest.
  11. In claim 10, The above soft part is a chair comprising wing parts that protrude upward and downward from the above rotating link member.
  12. In claim 9, On the front surface of the above-mentioned backrest post, a post rib is formed protruding to form an insertion groove into which the above-mentioned fixing link member is inserted, and The above post rib is a chair that is inserted into the interior of the locking member from the rear of the locking member.

Description

Chair The present invention relates to a chair, and more specifically, to a chair having a backrest. Generally, a dining chair consists of a seat and a backrest. The seat is positioned upward from the floor of the installation location by means of legs to support the user's buttocks and thighs, and the backrest is positioned protruding upward from the rear of the seat to support the user's back. Korean Utility Model Publication No. 20-2022-0000587 (March 11, 2022) (hereinafter referred to as the "prior art") discloses a dining chair having a seat portion which is a seat part and a backrest portion which is a backrest part, and a "dining chair including a seat plate having a plurality of connection positions." The above-described prior art relates to a dining chair comprising a seat, a frame, and a backrest, wherein the seat is characterized by having a seat latex laid on a seat synthetic wood and a seat fabric added thereto. Meanwhile, the above dining chair includes not only the chair with the seat fabric attached to the seat portion of the above-described prior art, but also the chair with the fabric attached to the back portion. Considering the usage environment of the above dining chair, the backrest may be easily contaminated by food. When a chair with a fabric backrest is used as a dining chair, the fabric on the backrest cannot easily remove food stains, so it is aesthetically pleasing to replace the backrest. However, since the above-mentioned conventional technology has a structure in which the backrest is fixed, there was a problem in that it was not easy to replace the backrest even if it became contaminated. FIG. 1 is a front perspective view showing a chair according to an embodiment of the present invention, FIG. 2 is a bottom perspective view of FIG. 1 viewed from the rear, FIG. 3 is a drawing showing the state with the backrest cushion removed from FIG. 1. FIG. 4 is a front perspective view showing the backrest frame, backrest post, and backrest connector illustrated in FIG. 2 in a disassembled state. FIG. 5 is a rear perspective view of FIG. 4, FIG. 6 is an exploded view of the backrest connector shown in FIG. 4. FIG. 7 is a rear perspective view of FIG. 6, FIG. 8 is an enlarged view of the rear coupling portion formed on the rear surface of the backrest frame illustrated in FIG. 5. FIG. 9 is an enlarged view of the connecting member shown in FIG. 6. FIG. 10 is a rear perspective view of FIG. 9, FIG. 11 is a cross-sectional view showing the state in which an elastic coupling projection of a coupling member shown in FIG. 9 is coupled to the rear coupling portion of the backrest frame shown in FIG. 8. FIG. 12 is an exploded perspective view showing the rotating link member illustrated in FIG. 6, FIG. 13 is a cross-sectional view showing the backrest frame illustrated in FIG. 4 connected to the backrest post through the backrest connector. Hereinafter, a chair according to an embodiment of the present invention will be described with reference to the drawings. It should be noted that when assigning reference numerals to the components of each drawing, the same components are assigned the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, in describing the embodiments of the present invention, if it is determined that a detailed description of related known components or functions would hinder understanding of the embodiments of the present invention, such detailed description is omitted. In describing the components of the embodiments of the present invention, terms such as first, second, A, B, (a), (b), etc., may be used. These terms are intended merely to distinguish the components from other components, and the essence, order, or sequence of the components is not limited by such terms. Furthermore, unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an ideal or overly formal sense unless explicitly defined in this application. FIG. 1 is a front perspective view showing a chair according to an embodiment of the present invention, FIG. 2 is a bottom perspective view looking at FIG. 1 from the rear, and FIG. 3 is a drawing showing the state with the backrest cushion removed from FIG. 1. In the following description, regarding terms related to directions such as up, down, front, back, left, and right, the up, down, front, back, left, and right directions follow the up, down, front, back, left, and right directions indicated by the arrows in Fig. 1. Referring to FIGS. 1 to 3, a chair (1) according to an embodiment of the present invention may include a chair body (100) and a leg portion (300).