Intelligent chair capable of flexibly changing armrest supporting positions

Abstract

The utility model discloses an intelligent chair capable of flexibly changing armrest supporting positions. The overall lifting of the chair is driven by a first electric push rod arranged in a lifting upright post; the independent lifting of the handrail is driven by a second electric push rod and is realized through a vertical guide mechanism; when a linkage mode is started, the height of the seat can be adjusted to automatically and synchronously adjust the height of the armrest, the preset height difference between the seat and the armrest is kept unchanged, operation is simplified, and supporting comfort is guaranteed; the memory function can store / recover absolute height values, set by a user, of the seat and the armrests through one key; according to the utility model, the problems that the traditional seat needs to be respectively adjusted, the optimal supporting height difference is difficult to keep and the memory function is not available are solved, and the adjusting efficiency and the sitting posture comfort are obviously improved.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a chair, and more specifically to a smart chair with flexibly adjustable armrest support positions. Background Technology

[0002] Existing chair armrest adjustment functions are limited, typically only supporting height adjustment or simple angle rotation. The adjustment methods are mostly manual and mechanical, which is inconvenient and difficult to accurately adapt to the needs of different user body types, sitting posture preferences, or specific tasks (such as working, reading, resting, and gaming). The cumbersome and limited nature of traditional armrest adjustments becomes a significant pain point, especially when frequently switching between usage scenarios. Furthermore, the lack of intelligent management functions means they cannot remember user preferences or achieve automated adjustment.

[0003] The existing technology, namely the "Office Chair for Lower Back Health" with patent number CN108392007A, only supports fixed position memory and cannot dynamically match changes in seat height, and only supports single absolute position storage. Utility Model Content

[0004] The purpose of this utility model is to provide a smart chair with flexible armrest support positions in order to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0006] This utility model proposes a smart chair with flexibly adjustable armrest positions, including a base, a lifting support column, a seat, a backrest, an armrest height adjustment mechanism, a second electric push rod, a control unit, a seat lifting button, an armrest lifting button, and a memory button. The base has anti-slip pads at the bottom for stable support on the ground. The lifting support column is vertically fixed to the base via a flange and has a first electric push rod inside. The seat is fixed to the top of the lifting support column via a quick-release mechanism. The backrest is hinged to the rear side of the seat. Armrests are symmetrically arranged on both sides of the seat, and the armrest body is connected to the seat and is driven to lift independently by the second electric push rod. The control unit is integrated into the bottom cavity of the seat, and a touch control panel is located on the lower front edge of the seat.

[0007] As a preferred embodiment of this utility model, the control unit is configured as follows:

[0008] a) Linkage mode: In response to the seat height adjustment command, the second electric push rod is synchronously controlled to maintain the armrest height at the preset difference ΔH between the armrest height and the seat height;

[0009] b) Memory function: Stores the absolute height values ​​of the seat and armrests, and can be restored with one click.

[0010] As a preferred technical solution of this utility model, the position detection module is a Hall encoder integrated in the first electric push rod and the second electric push rod, or a photoelectric position sensor independently installed on the slide rail.

[0011] The beneficial effects of this utility model are as follows:

[0012] 1. One-button linkage height adjustment: In linkage mode, simply adjust the seat height and the armrests will automatically follow, always maintaining the optimal support height difference, greatly simplifying operation and improving the consistency of sitting posture.

[0013] 2. Independent and flexible adjustment: The linkage can be turned off at any time, and the armrest height can be adjusted independently and precisely to meet special needs;

[0014] 3. Compact and reliable structure: Utilizing mature and reliable electric linear actuator technology, the structure is relatively simple and easy to implement and manufacture. Attached Figure Description

[0015] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0016] Fig. 2 Here are detailed images of the lifting support column and the first electric actuator;

[0017] Fig. 3 This is a detailed diagram of the second lifting support and the second electric push rod.

[0018] Reference numerals: 1. Base; 2. Lifting column; 3. Seat; 4. Backrest; 5. Armrest body; 6. Control panel; 7. Control unit; 21. First electric push rod; 51. Second lifting column; 52. Second electric push rod; 8. Position detection module; 9. Linkage control module; 10. Storage module; 11. Recovery module; 81. Hall sensor. Detailed Implementation Example 1

[0019] Test environment:

[0020] The tester was 175cm tall and weighed 70kg. The table height was 720mm. The usage time was 8 hours / day.

[0021] Initial settings: Activate "Office Mode" via the touch panel on the side of the armrest, set ΔH=80mm, and save the first set of scene data: seat height 450mm / armrest height 530mm;

[0022] Linkage adjustment: When the seat is raised to 480mm, the armrest automatically rises to 560mm in sync. The Hall encoder provides real-time position feedback, and the PID controller adjusts the push rod speed.

[0023] Memory retrieval: After lunch break, clicking the "Scene 1" button causes the dual push rods to precisely reset to the stored position within 8 seconds. The photoelectric sensor verifies that the final positioning error is <0.8mm.

[0024] Technical benefits: Compared to traditional seats, adjustment time is reduced by 60%, and elbow support pressure distribution is improved by 35%.

[0025] like Figs. 1 to 3 As shown, this utility model proposes: a smart chair with flexibly adjustable armrest positions, comprising a base, a lifting support column, a seat, a backrest, armrest bodies, and a control unit. The lifting support column has a built-in first electric push rod, the telescopic end of which is fixedly connected to the inner tube of the lifting support column, driving the support column and seat to rise and fall as a whole; the armrest bodies are respectively connected to both sides of the seat, and a second electric push rod is hinged to the bottom of each armrest body, the base of which is fixed to the seat support; the control unit includes:

[0026] The position detection module acquires the seat height and armrest height values ​​in real time;

[0027] The linkage control module is configured as follows:

[0028] When the linkage mode is activated, it responds to the seat lifting command, calculates the target height of the armrest based on the preset height difference ΔH, and synchronously drives the second electric push rod;

[0029] The storage module binds and stores the absolute coordinates of the seat height and armrest height as scene data;

[0030] The recovery module responds to memory commands and drives the dual push rods to restore the stored absolute coordinate values.

[0031] The position detection module is either a Hall encoder integrated into the first and second electric push rods, or a photoelectric position sensor independently mounted on the slide rail.

[0032] The storage module supports at least three sets of scene data storage, each set of data including seat height, armrest height, and linkage mode status marker.

[0033] The preset difference ΔH can be customized within the range of 50-150mm via the touch panel, with a step accuracy of 5mm.

[0034] Working principle:

[0035] I. Lifting Drive System

[0036] The first electric push rod telescopically drives the inner tube of the support column, realizing overall height adjustment of the chair seat with a stroke accuracy of ±0.5mm;

[0037] The second electric push rod drives the handrail via a hinge, and works with a PTFE self-lubricating slide rail to achieve a height adjustment of 50-150mm;

[0038] II. Intelligent Control Logic

[0039] Dual-mode adjustment

[0040] Linkage mode: The target height of the armrest is dynamically calculated based on the ΔH difference (which can be set from 50 to 150 mm) and synchronized with the seat lifting.

[0041] Independent mode: Armrests / seats can be adjusted separately, and position data is stored independently;

[0042] Scene memory

[0043] The storage module records three sets of absolute coordinates, with a reset accuracy error of <1mm.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart chair with flexibly adjustable armrest support position, comprising a base (1), a lifting support column (2), a seat (3), a back cushion (4), armrest body (5), a control panel (6), and a control unit (7), characterized in that: The lifting support column (2) has a built-in first electric push rod (21), the telescopic end of the first electric push rod (21) is fixedly connected to the inner tube of the lifting support column (2), and drives the support column and the seat (3) to lift as a whole; the armrest body (5) is connected to both sides of the seat (3), and each armrest body (5) has a second lifting support column (51) at the bottom, the second lifting support column (51) has a built-in second electric push rod (52), and the base of the second electric push rod (52) is fixed to the seat (3) bracket; The control panel (6) is located below the seat (2); the control unit includes: The position detection module (8) acquires the seat height value and armrest height value in real time; The linkage control module (9) is configured as follows: When the linkage mode is activated, it responds to the seat lifting command, calculates the target height of the armrest according to the preset height difference ΔH, and synchronously drives the second electric push rod (52). The storage module (10) binds and stores the absolute coordinate values ​​of the seat height value and the armrest height value as scene data; The recovery module (11) responds to the memory command and drives the dual push rods to restore the stored absolute coordinate values.

2. The smart chair with flexibly changeable armrest support position according to claim 1, characterized in that: The position detection module is a Hall sensor (81) integrated in the first electric push rod (21) and the second electric push rod (52).

3. The smart chair with flexibly adjustable armrest support position according to claim 1, characterized in that: The storage module (9) supports at least 3 sets of scene data storage, each set of data including seat height, armrest height and linkage mode status mark.

4. The smart chair with flexibly changeable armrest support position according to claim 1, characterized in that: The preset difference ΔH can be customized within the range of 50-150mm via the control panel (6), with a step accuracy of 5mm.

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