WO-2026090904-A1 - ADJUSTABLE CHAIR

WO2026090904A1WO 2026090904 A1WO2026090904 A1WO 2026090904A1WO-2026090904-A1

Abstract

An adjustable chair, comprising a chair seat, a chair back frame, a chair back plate, and two armrest structures. The chair back frame is pivotally connected to the chair seat and comprises two side plates. Each armrest structure comprises a fixing plate, a pin member, a stabilizing sleeve, and an armrest support. The fixing plate is fixed to the side plate and comprises a pivot hole. The armrest support is locked to the pin member. Rotation of the chair back frame by a first angle drives the armrest structures to rotate by a second angle, the second angle of the armrest structures being less than the first angle. Thereby, the convenience of use can be improved.

Inventors

CHENG, MING-CHUAN
CHENG, Shun-yuan

Assignees

国睦工业股份有限公司

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (10)

An adjustable chair, characterized in that it comprises: Seat; The backrest frame is pivotally connected to the seat and includes two side panels; A chair backrest panel, movably mounted on the chair back frame; and Two handrail structures are pivotally connected to the two side panels, and each of the two handrail structures includes: A fixing plate, fixed to each of the two side plates and including a pivot hole; A pin is inserted through the pivot hole; The stabilizing kit is fitted onto the pin; and The handrail bracket is locked to the pin. The backrest frame rotates a first angle relative to the seat, which in turn causes each of the two armrest structures to rotate a second angle relative to the seat. The second angle of each of the two armrest structures is smaller than the first angle.
The adjustable chair as claimed in claim 1 is characterized in that the first angle is between 0 degrees and 80 degrees, and the second angle of each of the two armrest structures is between 0 degrees and 30 degrees.
The adjustable chair as described in claim 1, further comprising: Drive components, disposed on the seat; and A drive rod is connected to the drive assembly and one of the two side plates; The drive assembly drives the drive rod, causing the chair back frame to be positioned relative to... The chair seat rotates.
The adjustable chair as claimed in claim 1, characterized in that each of the two side plates includes two tracks, and each of the two fixed plates further includes a plate body, two sliding parts and two fixing members, the two sliding parts are connected to the plate body and respectively accommodated in the two tracks, and the two fixing members respectively pass through the plate body and lock into the two sliding parts.
The adjustable chair as described in claim 1, characterized in that it further comprises two linkages, each of the two linkages comprising: The first stud is installed on one of the two handrail supports; Insertion rod, one end of which is used for inserting the first stud; and The second stud is disposed on the seat and inserted into the other end of the insertion rod.
The adjustable chair as claimed in claim 1, characterized in that each of the two armrest structures further includes an annular assembly, each of the two annular assemblies is accommodated in each of the two pivot holes, and each of the two annular assemblies is sleeved on each of the two pins and contacts each of the two stabilizing assemblies.
An adjustable chair, characterized in that it comprises: Seat; A backrest frame, pivotally connected to the seat and comprising two side panels; and Two handrail structures, pivotally connected to the two side panels, each of the two handrails Hand structures include: A fixing plate, fixed to each of the two side plates and including a pivot hole; A pin is inserted through the pivot hole; A stabilizing kit, fitted onto the pin, and the stabilizing kit being flexible; and The handrail bracket is locked to the pin. The stabilizing kit is deformed by the pin, causing the backrest frame to rotate at a first angle relative to the seat, which in turn causes each of the two armrest structures to rotate at a second angle relative to the backrest frame, the second angle being smaller than the first angle.
The adjustable chair as claimed in claim 7 is characterized in that the stabilizing kit has a nylon body.
The adjustable chair as claimed in claim 7 is characterized in that the first angle is between 0 degrees and 80 degrees, and the second angle of each of the two armrest structures is between 0 degrees and 30 degrees.
The adjustable chair as described in claim 7, further comprising: Drive components, disposed on the seat; and A drive rod is connected to the drive assembly and one of the two side plates; The drive assembly drives the drive rod, causing the backrest frame to rotate relative to the seat.

Description

Adjustable chair Technical Field This invention relates to a chair, and more particularly to an adjustable chair with an armrest structure. Background Technology The rise of health awareness has led to increased public attention to ergonomics. A typical chair consists of a seat, backrest, and armrests. The backrest is located on the seat, and the armrests are on the backrest. The chair can be adjusted to a reclining position, allowing the backrest to tilt backward. Since the position of the hands may differ between reclining and sitting positions, the armrests can be further adjusted to conform to ergonomic principles. However, this method of adjusting the handrails requires manual adjustment by the user, which is not feasible for users with limited hands, and therefore there is still room for improvement. Summary of the Invention To address the aforementioned problems, this invention provides an adjustable chair whose structural design enhances ease of use. According to one embodiment of the present invention, an adjustable chair is provided. The adjustable chair includes a seat, a backrest frame, a backrest panel, and two armrest structures. The backrest frame is pivotally connected to the seat and includes two side panels. The backrest panel is movably disposed on the backrest frame. The two armrest structures are respectively pivotally connected to the two side panels, and each armrest... The structure includes a fixing plate, pins, stabilizing components, and armrest supports. The fixing plate is fixed to each side plate and includes pivot holes. The pins pass through the pivot holes. The stabilizing components are fitted onto the pins. The armrest supports are locked to the pins. When the backrest frame rotates relative to the seat by a first angle, it causes each armrest structure to rotate relative to the seat by a second angle, the second angle of each armrest structure being smaller than the first angle. According to the aforementioned embodiment of the adjustable chair, the first angle can be between 0 degrees and 80 degrees, and the second angle of each armrest structure can be between 0 degrees and 30 degrees. The adjustable chair according to the aforementioned embodiment may further include a drive assembly and a drive rod. The drive assembly is disposed on the seat. The drive rod is connected to the drive assembly and one of the two side plates. The drive assembly drives the drive rod, causing the backrest frame to rotate relative to the seat. According to the aforementioned embodiment of the adjustable chair, each side panel may include two tracks, and each fixed plate may further include a plate body, two sliding parts and two fixing members. The two sliding parts are connected to the plate body and are respectively accommodated in the two tracks, and the two fixing members are respectively inserted through the plate body and locked into the two sliding parts. The adjustable chair according to the aforementioned embodiment may further include two linkages, each linkage including a first stud, a insertion rod, and a second stud. The first stud is disposed in one of the two armrest supports. One end of the insertion rod is into which the first stud is inserted. The second stud is disposed in the seat and inserted into the other end of the insertion rod. According to the aforementioned embodiment of the adjustable chair, each armrest structure may further include annular components, each annular component being accommodated in each pivot hole, each annular component being sleeved on each pin and contacting each stabilizing component. According to another embodiment of the present invention, an adjustable chair is provided. The adjustable chair includes a seat, a backrest frame, and two armrest structures. The backrest frame is pivotally connected to the seat and includes two side plates. The two armrest structures are respectively pivotally connected to the two side plates, and each armrest structure includes a fixing plate, a pin, a stabilizing sleeve, and an armrest bracket. The fixing plate is fixed to each side plate and includes a pivot hole. The pin passes through the pivot hole. The stabilizing sleeve is fitted onto the pin and is elastic. The armrest bracket is locked to the pin. The stabilizing sleeve is deformed by the pin, causing the backrest frame to rotate relative to the seat by a first angle, which in turn causes each armrest structure to rotate relative to the backrest frame by a second angle, the second angle being smaller than the first angle. The adjustable chair according to the aforementioned embodiment may have a nylon body for the stabilizing kit. According to the aforementioned embodiment of the adjustable chair, the first angle can be between 0 degrees and 80 degrees, and the second angle of each armrest structure can be between 0 degrees and 30 degrees. The adjustable chair according to the aforementioned embodiment may further include a drive assembly and a drive r