Chair armrest height adjustment device

Abstract

The present invention relates to a chair armrest height adjustment device, and more specifically, to a chair armrest height adjustment device that allows the height of an armrest installed on a chair to be adjusted by simply lifting the armrest, and when moving it downward, allows the height to be easily adjusted by lifting it to the top and then naturally moving it downward. The present invention, for achieving the above-mentioned purpose, comprises an armrest height adjustment device installed on a chair, the device being characterized by comprising: a case coupled to both sides of the chair; a lifting bar provided to be movable up and down inside the case; an armrest member installed on the upper part of the lifting bar; and an operating member provided inside the case to adjust the height of the lifting bar.

Description

Technology Field

[0001] The present invention relates to a chair armrest height adjustment device, and more specifically, to a chair armrest height adjustment device that allows the height of an armrest installed on a chair to be adjusted by simply lifting the armrest, and when moving it downward, allows the height to be easily adjusted by lifting it to the top and then naturally moving it downward. Background Technology

[0002] Generally, a chair consists of a seat, legs that support the seat, a backrest that is attached to the seat and supports the user's back, a cylinder installed between the seat and the legs to adjust the height, and a headrest installed on the upper part of the backrest to support the user's head.

[0003] In addition, cushions are installed on the backrests of chairs to provide convenience to users, and recently, chairs are being manufactured that utilize seats made of breathable mesh material to provide great comfort to users.

[0004] Recently, chairs have evolved beyond the concept of being merely furniture for users to sit on, being designed and manufactured with diverse functions and designs. In particular, to enhance comfort, chairs are being used that allow not only the angle of the seat but also the height of the armrests to accommodate various body structures and situations.

[0005] As shown in FIG. 1, the armrest (1) for a chair according to the prior art is installed on each side of the seat plate of the chair and is equipped with a fastening plate (2) installed on the seat plate of the chair, and is composed of a support member (3) with one end fixed to the fastening plate (2) and an armrest member (4) installed on the upper end of the support member (3), and a height adjustment device is additionally installed so that the height can be adjusted to suit the user's body shape or posture.

[0006] At this time, the height adjustment device comprises a movable frame (5) connected to an armrest member (4), a fixed frame (7) inserted into the movable frame (5) and forming a multi-stage locking projection (6), a locking pin (8) with one end connected to the movable frame (5) and elastically coupled with the outer circumference of the locking projection (6), and a button part (9) that releases the elastic coupling force by pressing the locking pin (8).

[0007] Therefore, when a user lifts the armrest member (4) while sitting on the chair, the locking pin (8) must be rotated, the height of the armrest member (4) adjusted, and then rotated again to fix it. In order to lower the height of the armrest member (4), the locking pin (8) must be rotated to release the locking from the locking tab (6), and then the armrest member (4) can be pressed downward.

[0008] However, in the conventional technology described above, since the height of the armrest of the chair can only be adjusted by rotating the locking pin (8), there is a cumbersome problem in that it must be fixed again after being adjusted each time. Prior art literature

[0009] Korean Utility Model Registration No. 20-0467366 (Registered June 3, 2013) The problem to be solved

[0010] The present invention has been devised to solve the aforementioned problems, and the objective of the present invention is to provide a chair armrest height adjustment device that allows the height of an armrest installed on a chair to be adjusted simply by lifting the armrest without any special operation, and when moving it downward, the height can be easily adjusted by lifting it to the top and then naturally moving it downward. means of solving the problem

[0011] The present invention for solving these problems is as follows:

[0012] An armrest height adjustment device installed on a chair is characterized by comprising a case coupled to both sides of the chair, a lifting bar provided to be movable up and down inside the case, an armrest member installed on the upper part of the lifting bar, and an operating member provided inside the case to adjust the height of the lifting bar.

[0013] Here, a moving groove is formed in the vertical direction on one side of the lifting bar, a support groove is formed on the side of the moving groove, and an inclined surface is formed on the upper part of the support groove to be connected to the end of the support groove located above.

[0014] At this time, an operating receiving groove into which the operating member is inserted is formed on the inner surface of the case, and a supporting projection is formed protrudingly on one side of the operating member, which moves along the moving groove and is supported by the supporting groove, and a spring is provided on one side of the operating receiving groove to elastically support the operating member in the direction in which the supporting projection is inserted into the supporting groove.

[0015] In addition, the above-described operating member is formed with a shape in which the width is wide at the bottom and narrows toward the top, wherein an upper locking projection is formed at the top of the operating member, an upper locking groove into which the upper locking projection is inserted is formed at the top of the operating receiving groove, a lower locking groove is formed at the bottom of the operating receiving groove, and a lower locking projection is formed at the bottom of the operating member to protrude downward in correspondence with the lower locking groove.

[0016] Here, an adjustment groove is further formed at the bottom of the moving groove, and when the support projection is inserted into the adjustment groove, the upper locking projection is maintained in a state of being inserted into the upper locking groove by the elastic force of the spring.

[0017] Meanwhile, an armrest coupling part is further installed on one side of the above chair, wherein a receiving groove into which the case is inserted is formed on the upper part of the armrest coupling part, a support projection is formed on the upper part of the case to protrude outward, and a support groove that supports the support projection is formed on the upper part of the receiving groove.

[0018] At this time, the armrest coupling part is characterized by being provided with a fixing bolt to fix the case. Effects of the invention

[0019] According to the present invention with the above-described configuration, when adjusting the height of an armrest installed on a chair, the height can be adjusted simply by lifting the armrest without any special operation, and when moving it downward, it can be lifted to the top and then naturally moved downward, thereby providing the effect of easily adjusting the height. Brief explanation of the drawing

[0020] Figure 1 is a conceptual diagram of a conventional chair armrest height adjustment device. FIG. 2 is a perspective view of a chair with an armrest height adjustment device according to the present invention. FIG. 3 is an exploded perspective view of a chair armrest height adjustment device according to the present invention in a separated state from the chair. FIG. 4 is an exploded perspective view of a chair armrest height adjustment device according to the present invention. FIG. 5 is a perspective view of an operating member of a chair armrest height adjustment device according to the present invention. FIG. 6 is a conceptual diagram showing the operating state of an operating member of a chair armrest height adjustment device according to the present invention. Specific details for implementing the invention

[0021] Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the attached drawings. Identical components in the drawings are denoted by the same reference numerals, and redundant descriptions of identical components are omitted. Furthermore, it should be understood that the present invention can be implemented in a number of different forms and is not limited to the described embodiments.

[0022] FIG. 2 is a perspective view of a chair to which a chair armrest height adjustment device according to the present invention is applied, FIG. 3 is an exploded perspective view of the chair armrest height adjustment device according to the present invention separated from the chair, FIG. 4 is an exploded perspective view of the chair armrest height adjustment device according to the present invention, FIG. 5 is a perspective view of an operating member of the chair armrest height adjustment device according to the present invention, and FIG. 6 is a conceptual diagram showing the operating state of the operating member of the chair armrest height adjustment device according to the present invention.

[0023] The present invention relates to an armrest height adjustment device (200) installed on a chair (100), and as shown in FIGS. 2 to 6, the configuration comprises a case (220) coupled to both sides of the chair (100), a lifting bar (250) provided to be movable up and down inside the case (220), and an armrest member (260) installed on the upper part of the lifting bar (250).

[0024] Here, the chair (100) comprises a seat portion (110) formed for a user to sit on, a backrest portion (120) located at the rear of the seat portion to support the user's back, and a leg portion (130) supporting the lower part of the seat portion (110), and on both sides of the chair (100), an armrest connecting portion (210) to which the case (220) is connected is installed.

[0025] At this time, the armrest connecting part (210) may be installed on both lower sides of the backrest part (120) as shown in the drawing, or on both sides of the seat part (110) although not shown in the drawing.

[0026] Therefore, the height of the armrest member (260) can be adjusted through the lifting bar (250) which is provided to be movable up and down in the case (220), so that the height can be adjusted to suit the user's physical condition, thereby allowing the chair to be used in a comfortable state.

[0027] In addition, a moving groove (252) is formed in the upper and lower direction at the front center of the lifting bar (250), and a support groove (254) is formed at regular intervals along the upper and lower direction on the side of the moving groove (252).

[0028] Here, an inclined surface (255) is formed on the upper part of the support groove (254) to be connected to the inner end of the support groove (254) located at the top, so that when the lifting bar (250) is moved upward, the support protrusion (246) of the operating member (240) described later moves along the inclined surface (255), thereby allowing the lifting bar (250) to move upward easily.

[0029] Meanwhile, the above case (220) comprises a first case member (222) covering one side of the lifting bar (250) and a second case member (224) covering the other side, wherein an operating receiving groove (230) is formed on the inner surface of either the first case member (222) or the second case member (224) at a position corresponding to the moving groove (252).

[0030] Here, the aforementioned operating member (240) is inserted into the operating receiving groove (230) so as to be movable at a predetermined interval, and a supporting protrusion (246) is formed on one side of the operating member (240) to protrude laterally.

[0031] At this time, the support protrusion (246) is installed to be inserted and supported in the support groove (254) while moving up and down along the moving groove (252) as described above, and a spring (238) is provided on one side of the operating receiving groove (230) to elastically support the operating member (240) in the direction in which the support protrusion (246) is inserted into the support groove (254).

[0032] Therefore, by the elastic force of the spring (238), the operating member (240) is pressed to one side, and the support protrusion (246) formed on one side of the operating member (240) is maintained in a state where it is inserted into the support groove (254) formed on the side of the moving groove (252), thereby preventing the lifting bar (250) from moving downward, so that even if the user's arm is positioned on the upper part of the armrest (210), it is stably supported without moving downward.

[0033] In addition, the upper part of the operating member (240) is formed in a triangular shape that is narrow and widens toward the lower part, and the lower part of the operating member (240) is formed so that a lower locking projection (244) protrudes downward, and the lower part of the operating receiving groove (230) has a lower locking groove (236) into which the lower locking projection (244) is inserted.

[0034] Here, the entire lower stopper portion (236) is formed to be inclined in a round shape, so that the upper part of the operating member (240) can rotate relative to the lower stopper portion (236), and accordingly, the support portion (246) can move between the moving groove (252) and the support groove (254).

[0035] At this time, a spring support bar (232) into which one side of the spring (238) is inserted is formed on one side of the operating receiving groove (230), and a spring receiving groove (248) into which the other side of the spring (238) is inserted is formed on one side of the operating member (240).

[0036] Therefore, when the lifting bar (250) is moved upward while the support protrusion (246) is inserted into the support groove (254), the operating member (240) can rotate left and right relative to the lower locking protrusion (236). As shown in FIG. 6, the support protrusion (246) moves in the direction of pressing the spring (238) by means of the inclined surface (255) formed at the bottom of the support groove (254), and is easily moved to the support groove (254) located at the bottom.

[0037] Conversely, the upper part of the support groove (254) is formed flat and supported on the upper part of the support protrusion (246), thereby preventing the lifting bar (250) from moving downward arbitrarily.

[0038] Meanwhile, an upper locking groove (234) is formed concavely upward on the upper part of the above-mentioned operating receiving groove (230), and an upper locking projection (242) is formed to protrude upward on the upper part of the above-mentioned operating member (240) to correspond to the upper locking groove (234).

[0039] Here, an adjustment groove (256) is further formed at the bottom of the moving groove (252), and when the lifting bar (250) moves to the top, the support protrusion (246) of the operating member (240) moves along the inclined surface (255) and is inserted into the adjustment groove (256).

[0040] At this time, as illustrated in FIG. 6, when the support protrusion (246) is inserted into the adjustment groove (256), the position of the upper locking protrusion (242) corresponds to the upper locking groove (234). In this state, when the lifting bar (250) is moved further upward, the support protrusion (246) is inserted into the adjustment groove (256) and cannot move downward, so the operating member (240) moves upward, causing the operating receiving groove (230) to move upward, and the upper locking protrusion (242) is inserted into the upper locking groove (234).

[0041] Additionally, even if the operating member (240) moves upward, the lower locking projection (244) remains partially inserted into the lower locking groove (236), and since the operating member (240) is elastically supported by the elastic force of the spring (238), the upper locking projection (242) remains inserted into the upper locking groove (234).

[0042] Therefore, in this state, as shown in FIG. 6, since the support protrusion (246) is withdrawn from the support groove (254), when moving the lifting bar (250) downward, it can be easily moved downward without getting caught in the support groove (254).

[0043] Here, when the lifting bar (250) moves to the lowest position, the support protrusion (246) comes into contact with the upper end of the moving groove (252). In this state, when the lifting bar (250) is moved further downward, the operating member (240) moves downward together with the support protrusion (246).

[0044] Therefore, the upper locking projection (242) inserted into the upper locking groove (234) is withdrawn from the upper locking groove (234) as the operating member (240) moves downward, and accordingly, the upper part of the operating member (240) moves sideways due to the elastic force of the spring (238), thereby causing the support projection (246) to move and be inserted into the support groove (254).

[0045] In addition, a receiving groove (212) is formed on the upper part of the armrest connecting part (210) installed on both sides of the chair (100) so that the case (220) is inserted therein, and a support groove (214) is formed on the upper part of the receiving groove (212).

[0046] Here, the first case member (222) and the second case member (224) are joined in various known ways, such as bolts or adhesive bonding, to form a case (220). A support projection (226) is formed on the top of the case (220) to protrude outwardly and is inserted into the support groove (214), thereby preventing the case (220) from being excessively inserted into the receiving groove (212).

[0047] At this time, a fixing bolt (not shown) is provided on the lower or side of the armrest coupling part (210) so that the case (220) inserted into the receiving groove (212) can be fixed as well as separated, allowing the armrest part (200) to be easily separated when replacing or repairing it.

[0048] Although preferred embodiments of the present invention have been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to those within a substantially equivalent range to the embodiments of the present invention. Various modifications can be made by those skilled in the art to which the present invention belongs, without departing from the spirit of the present invention. Industrial applicability

[0049] The present invention relates to a chair armrest height adjustment device, and more specifically, to a chair armrest height adjustment device that allows the height of an armrest installed on a chair to be adjusted by simply lifting the armrest, and when moving it downward, allows the height to be easily adjusted by lifting it to the top and then naturally moving it downward. Explanation of the symbols

[0050] 100 : Chair 110 : Seat 120: Backrest 130: Legs 200: Armrest part 210: Armrest connecting part 220 : Case 230 : Operating receiving groove 240 : Operating member 250 : Lift bar 260 : Armrest component

Claims

Claim 1 An armrest height adjustment device installed on a chair comprises a case coupled to both sides of the chair, a lifting bar provided to be movable up and down inside the case, an armrest member installed on the upper part of the lifting bar, and an operating member provided on the inner part of the case to adjust the height of the lifting bar; a moving groove is formed in the up and down direction on one side of the lifting bar, a support groove is formed on the side of the moving groove, and an inclined surface is formed on the upper part of the support groove to be connected to the end of the support groove located at the upper part, an operating receiving groove into which the operating member is inserted is formed on the inner side of the case, and a support projection is formed protruding from one side of the operating member to move along the moving groove and be supported by the support groove, and a spring is provided on one side of the operating receiving groove to elastically support the operating member in the direction in which the support projection is inserted into the support groove, and the operating member is formed in a shape in which the width is wide at the bottom and narrows towards the top, and the upper part of the operating member A chair armrest height adjustment device characterized by the following: an upper locking projection is formed; an upper locking groove into which the upper locking projection is inserted is formed in the upper part of the operating receiving groove; a lower locking groove is formed in the lower part of the operating receiving groove; a lower locking projection is formed to protrude downwardly in correspondence with the lower locking groove in the lower part of the operating member; an armrest coupling part is further installed on one side of the chair, wherein a receiving groove into which the case is inserted is formed in the upper part of the armrest coupling part; a support projection is formed to protrude outwardly on the upper part of the case; a support groove in which the support projection is supported is formed on the upper part of the receiving groove; and a fixing bolt is provided in the armrest coupling part to fix the case so as to be detachably attached. Claim 2 delete Claim 3 delete Claim 4 delete Claim 5 A chair armrest height adjustment device according to claim 1, wherein an adjustment groove is further formed at the bottom of the moving groove, and when the support projection is inserted into the adjustment groove, the upper locking projection is maintained in a state of being inserted into the upper locking groove by the elastic force of the spring. Claim 6 delete Claim 7 delete

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