TWI653016B - Chair armrest height adjustment structure - Google Patents

Abstract

The invention relates to a chair armrest height adjusting structure, comprising a handrail horizontal top and a support body disposed under the horizontal cross section of the handrail, the support body is provided with a joint portion for combining with the chair body, the support body comprises An outer tube culverts an inner tube, and the invention mainly achieves the stretching and contraction of the outer tube and the inner tube by a relatively simple structure and a relatively saving type assembly, thereby achieving the height adjustment of the support body and The role of positioning.

Description

Chair armrest height adjustment structure

The present invention relates to a chair, and more particularly to a handrail for a chair.

According to the chair, the chair is a device for providing a human body. In order to further provide a human body, the hand can be supported, especially for an office chair that is used for a long time. Usually, the chair has a handrail, and the chair usually has a chair. The armrests are fixed. Therefore, it is not easy to provide adjustments for height and height and different needs. Later, there was a designer design such as the Taiwan Invention Patent Publication No. M308021 (Prior Art 1), a stepless lift arm structure, but later the applicant considered that the problem with the prior art was to push the action part only to make the gear Rotate one or two teeth to adjust the height of one to two teeth of the rack. Therefore, the adjustment is slow. If there is a large distance adjustment, it is necessary to repeatedly press the action part to achieve the adjustment effect. This is extremely laborious and difficult to operate. . Later, the applicant applied for an invention patent M397204 (previous technical second). The purpose and effect of the adjustment structure according to the patent specification mainly lies in the fact that the outer tube body is sleeved on the armrest and the corresponding sleeve is set on the seat. The inner tube body is provided with a latch seat in the inner tube body, and a guide groove for the movable displacement of the embedded rod is arranged in the cassette seat, and the concave and convex teeth are arranged on both sides of the guide groove. Corresponding to the locking portion of the embedded rod, and one end of the inserting rod is correspondingly fixed with a torsion member and a resilient ring embedded on the outer tube body; thereby, the design of the twisting member is used to insert the elastic ring The locking portion of the fixed rod is positioned or disengaged from the concave and convex portions of the tooth, so that the effect of adjusting the height of the armrest of the chair can be achieved. However, the Applicant believes that the prior art 2, although exerting the expected efficacy, generally achieves the expected efficacy in terms of the cumbersomeness of the structure relative to the components, such as a cassette inside the inner tube body and the outer tube. The elastic ring of the body is provided with a guide groove for the displacement of the embedded rod in the cassette seat. Both may produce more cumbersome components and assembly costs, so there is still room for improvement.

In view of the problems of the prior art, the inventors believe that there should be a chair armrest height adjustment structure, including a handrail cross top and a support body disposed under the cross top of the armrest, the support body is provided with a chair body In combination with the joint portion, the support body comprises an outer tube culvert and an inner tube, and a side wall of the inner tube is provided with a plurality of joint holes which are open at the inner side and an open end, and the inner tube is provided with an elastic component, the elasticity The assembly includes a rod body that is separated from the body by a reed, and the rod body is disposed perpendicular to the reeling direction of the reed, and the first protruding post of the one of the holes can be received by the open ends, and the rod The top end of the rod body is provided with a boring hole, and a perforation corresponding to the outer tube is arranged to allow the truss of one piece to be inserted for pressing and relaxing the rod body toward the reed. When the operator wants to adjust the length of the overall support body, the ram can be pulled to cause the shank to swing the shank and compress the reed to be compressed on the inner side wall of the inner tube. The stud is bare from the open end of the orifice, causing the outer tube to disengage from the inner tube. At this time, the outer tube can be compressed relative to the length of the user according to the length required by the user, and adjusted to the required length. Then, the member is released, and the spring is released, so that the first protrusion is inserted into the hole from the open end of the section hole to be repositioned to form a positioning. According to the foregoing configuration, the inner tube can create a plurality of joint holes which are separated from each other and have an open end toward the inner side, and the elastic body is generated from the main body by a reed, and the structure is relatively simple and saves. This type of assembly is still capable of elastic actuation, adjustment of height and positioning.

The structure, features, and embodiments of the present invention will be described in conjunction with the drawings. Referring to the first figure, in conjunction with the second figure, the present invention relates to a chair armrest height adjustment structure, comprising a handrail horizontal top (1) and a support body disposed under the armrest horizontal top (1) (2) The support body (2) is provided with a joint portion (24) for coupling with the seat body. The support body (2) includes an outer tube (20) and an inner tube (21). The joint portion (24) is preferably disposed at the bottom of the inner tube (21), and the inner tube (21) is provided with a side wall. A plurality of spaced apart opening holes (211) are provided on the inner side, and an inner elastic tube (22) is disposed inside the inner tube (21), and the elastic assembly (22) includes a rod body (221), the rod body ( 221) a reed (222) from the body, and the rod (221) is disposed perpendicular to a direction in which the reed (222) is zoomed, and the first end of the one of the holes (211) may be included by the open ends. a column (221A), and a top end of the rod body (221) is provided with a twisting hole (221C), corresponding to a through hole (201) of the outer tube (20), allowing a mast (23) of the mast ( 231) incorporating for the lever (221) to be pressed and relaxed toward the reed (222). The inner edge of the tampering tunnel (221C) may be provided with a convex key (221D), and the outer edge of the shank (231) is provided with a keyway (232) into which the male key (221D) can be inserted (in conjunction with the fourth figure) Show). Referring to the third and fourth figures, when the operator wants to adjust the length of the overall support (2), the member (23) can be pulled so that the mast (231) smashes the rod (221). Rotating and pressing the reed (222) to compress the inner side wall of the inner tube (21), at which time the first stud (221A) is exposed by the open end of the orifice (211), such that The outer tube (20) is separated from the inner tube (21) in a stuck state. At this time, the outer tube (20) can be compressed relative to the length of the user according to the length required by the user, and adjusted to the required length. Then, the component (23) is released, and the spring (222) is released, so that the first protrusion (221A) enters the orifice (211) from the open end of the orifice (211) and is re-introduced. The card is positioned to form a positioning. In a preferred embodiment of the present invention, the second protrusion (221B) is further disposed at a position adjacent to the first protrusion (213), and the first protrusion (221A) and the second protrusion (221B) are simultaneously used. The inclusion of two of the holes (211) makes the positioning more stable and stable. In the present invention, the inner side wall of the inner tube (21) is spaced apart from the top by a rib (212), so that the elastic component (22) is limited to one side of the rib (212), and the elastic component (22) can be The inner tube (21) is incorporated in a small volume, and although the volume is saved, the elasticity can be achieved, and the stability of the structure is achieved by the limit, and the spacing can also allow the rod (221) to have a swing when it is swung. Large operating margin (as shown in the third figure). In summary, the present invention is indeed in line with industrial utilization, and is not found in publications or publicly used before application, nor is it known to the public, and has non-obvious knowledge, conforms to patentable requirements, and patents are filed according to law. . However, the above description is a preferred embodiment of the industry of the present invention, and all the equivalent changes made by the scope of the patent application of the present invention are within the scope of the claim.

(1)‧‧‧Handrail horizontal

(2) ‧‧‧Support

(20) ‧‧‧External management

(201) ‧‧‧Perforation

(21) ‧ ‧ inner management

(211) ‧ ‧ holes

(212)‧‧‧ Ribs

(22)‧‧‧Flexible components

(221)‧‧‧ rods

(221A) ‧‧‧First stud

(221B)‧‧‧second stud

(221C) ‧ ‧ can be turned into a tunnel

(221D) ‧ ‧ convex keys

(222)‧‧‧Reed

(23) ‧ ‧ 掣

(231)‧‧‧Mast

(232)‧‧‧ keyway

(24) ‧ ‧ joints

The first figure is a combined perspective view of the present invention. The second drawing is a perspective exploded view of the present invention. The third figure is a schematic diagram of the adjustment high and low state of the present invention. The fourth figure is a schematic diagram of the positioning of the present invention.

Claims (2)

A chair armrest height adjusting structure comprises a handrail horizontal top and a support body disposed under the horizontal cross of the handrail, the support body is provided with a joint portion for combining with the chair body, the support body comprises an outer pipe culvert An inner tube is disposed, and a side wall of the inner tube is provided with a plurality of section holes which are open to the inner side and an elastic end is disposed inside the inner tube, and the elastic tube comprises a rod body, the rod body is divergent from the bottom of the body body a reed, and the rod body is disposed perpendicular to the reeling direction of the reed, and the first protruding post of the one of the holes is received by the open ends, and a top end of the rod body is provided with a twisting hole, A perforation shall be provided in the outer tube to allow a mast to be inserted into the rod for pressing and relaxing toward the reed, wherein the inner side wall of the inner tube is spaced apart from the top by a rib, so that the elastic component is Limited to one side of the rib, and the spacing allows for a large operating margin when the shaft is swung. The armrest height adjustment structure of the chair armrest according to the first aspect of the invention, wherein the second protrusion is further disposed at a position adjacent to the first protrusion.