Patent Application
20250235001
This application is based on and claims the benefit of priority from Chinese Patent Application No. 2024100954761, filed on 22 Jan. 2024, the entirety of which is incorporated by reference herein.
The disclosure relates to the field of chairs, and in particular to a base frame assembly and a chair having the same.
As we all know, existing chairs such as office chairs typically come with adjustable features, such as a rotatable backrest, and a cushion adjustable in position and height. However, in order to achieve these adjustments, an occupant needs to operate corresponding parts of the chair, which undoubtedly results in inconvenient use.
The disclosure aims at solving at least one of the technical problems in the existing technology. Therefore, the disclosure proposes a base frame assembly, which can conveniently adjust a state of a chair.
The disclosure further proposes a chair having the base frame assembly.
The base frame assembly according to an embodiment in a first aspect of the disclosure comprises a frame body, a lifting connecting structure, a translation connecting structure, a backrest connecting structure and a control handle; the lifting connecting structure is arranged on the frame body, the lifting connecting structure is used for driving the frame body to lift up or down; the translation connecting structure is arranged on the frame body, the translation connecting structure is used for driving the frame body to move back and forth and/or move left and right; the backrest connecting structure is arranged on the frame body and is used for connecting with a backrest, the backrest connecting structure is used for driving the backrest to rotate relative to the frame body; the control handle is movably arranged on the frame body, the lifting connecting structure, the translation connecting structure and the backrest connecting structure are all connected with the control handle; and the control handle is movable and/or rotatable in at least three different directions, to respectively drive the lifting connecting structure, the translation connecting structure and the backrest connecting structure through different motion trajectories.
The base frame assembly according to the embodiment of the disclosure has at least the following beneficial effects. The frame body is liftable relative to a ground and other parts by the lifting connecting structure, movable relative to a cushion by the translation connecting structure, and able to drive a backrest to rotate by the backrest connecting structure, so that each state of the chair can be smoothly adjusted to a target state for an occupant.
When adjusting each state of the chair, the occupant only needs to drive the control handle to move or rotate in a corresponding direction, so as to achieve adjustment to the corresponding state. As the adjustment to various states can be achieved by the control handle, the time and effort required by the occupant to find and drive the adjustment parts respectively when adjusting a plurality of chair states can be effectively reduced, thus effectively achieving convenient and quick use.
According to some embodiments of the disclosure, the lifting connecting structure comprises a pneumatic rod connecting part arranged on the frame body, the pneumatic rod connecting part is connected with a pneumatic rod component to drive the frame body to lift up or down; the pneumatic rod connecting part is connected with a pull rope, one end of the pull rope is connected with a pneumatic rod to control operation thereof, and the other end of the pull rope is connected with the control handle.
According to some embodiments of the disclosure, the frame body comprises a hidden rack, the control handle is movably connected to the hidden rack; the pull rope extends from the pneumatic rod connecting part into the hidden rack and is connected with the control handle, and the hidden rack is used for shielding the pull rope to prevent the pull rope from being exposed.
According to some embodiments of the disclosure, the frame body is provided with a mounting seat, a rotating seat is rotatably connected to the mounting seat, the control handle is hinged to an end of the rotating seat, a rotating shaft of the rotating seat and a rotating shaft of the control handle relative to the rotating seat are interlaced with each other; the pull rope passes through the mounting seat and the rotating seat and is connected with the control handle; and the translation connecting structure is connected with the rotating seat.
According to some embodiments of the disclosure, the translation connecting structure comprises a rotating seat connected with the control handle, the control handle is able to drive the rotating seat to rotate; the translation connecting structure comprises a cushion connecting part and a sliding block, the sliding block is connected with the cushion connecting part; and a side part of the rotating seat is connected with the sliding block and is able to drive the sliding block to slide relative to the frame body.
According to some embodiments of the disclosure, a clamping block is liftably arranged on the frame body, a clamping groove is arranged in the cushion connecting part, the clamping block is able to extend into the clamping groove; a wedge-shaped inclined plane is arranged between the sliding block and the clamping block, and when the sliding block slides, the clamping block is driven to lift up or down through the wedge-shaped inclined plane.
According to some embodiments of the disclosure, the backrest connecting structure comprises a connecting shaft, the connecting shaft is used for connecting the backrest and driving the backrest to rotate relative to the frame body; an end of the connecting shaft is connected with a toothed part, an engaging block is slidably arranged in the frame body, the engaging block is able to be engaged with the toothed part to prevent the toothed part from rotating, and the engaging block is connected with a pull rope and is connected with the control handle through the pull rope.
According to some embodiments of the disclosure, a driving torsion spring is arranged in the frame body, the driving torsion spring is used for connecting to the backrest and driving the backrest to rotate relative to the frame body; a handle and an elastic force adjusting structure are arranged in the frame body, and the handle is rotatable to adjust an elastic force applied to the backrest by the driving torsion spring through the elastic force adjusting structure.
According to some embodiments of the disclosure, a screw is provided around which the handle is rotatable, the screw is connected with a supporting base, an end of the driving torsion spring is engaged with the supporting base and is driven to move by the supporting base; the frame body is provided with a gear, one end of the handle is connected with the gear, the other end of the handle is provided with a rotary knob, a pull rope and a connecting member, the connecting member is provided with clamping teeth, the rotary knob is connected with the connecting member through the pull rope, and the connecting member is rotatable relative to the gear, so that the clamping teeth are engaged with the gear.
A chair according to an embodiment in second aspect of the disclosure comprises the base frame assembly according to the embodiment in the first aspect of the disclosure.
The chair according to the embodiment of the disclosure has at least the following beneficial effects. The frame body is liftable relative to a ground and other parts by the lifting connecting structure, movable relative to a cushion by the translation connecting structure, and able to drive a backrest to rotate by the backrest connecting structure, so that each state of the chair can be smoothly adjusted to a target state for an occupant.
When adjusting each state of the chair, the occupant only needs to drive the control handle to move or rotate in a corresponding direction, so as to achieve adjustment to the corresponding state. As the adjustment to various states can be achieved by the control handle, the time and effort required by the occupant to find and drive the adjustment parts respectively when adjusting a plurality of chair states can be effectively reduced, thus effectively achieving convenient and quick use.
The additional aspects and advantages of the disclosure will be partially given in the following description, and will be partially apparent from the following description, or will be understood via the practice of the disclosure.
The above and/or additional aspects and advantages of the disclosure will be more apparent from the following description of the embodiments in conjunction with the accompanying drawings, wherein:
The embodiments of the disclosure will be described in detail hereinafter. Examples of the embodiments are shown in the accompanying drawings. The same or similar reference numerals throughout the drawings denote the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only intended to explain the disclosure, but should not be construed as limiting the disclosure.
In the description of the disclosure, it should be understood that the orientation or position relation related to the orientation description, such as the orientation or position relation indicated by the terms such as upper, lower, front, rear, left, right, etc., is based on the orientation or position relation shown in the drawings, which is only used for convenience of description of the disclosure and simplification of description instead of indicating or implying that the indicated device or element must have a specific orientation, and be constructed and operated in a specific orientation, and thus shall not be understood as a limitation to the disclosure.
In the description of the disclosure, several means one or more, multiple means two or more, greater than, less than and exceeding are understood as excluding the following number, and above, below and within are understood as including the following number. If first and second are described, the descriptions are used for the purpose of distinguishing the technical features only, and cannot be understood as indicating or implying relative importance, or implicitly indicating the number of technical features indicated thereby, or implicitly indicating the order of technical features indicated thereby.
In the description of the disclosure, unless otherwise clearly defined, words such as setting, installation, connection, and the like, shall be understood broadly, and those of ordinary skills in the art can reasonably determine the specific meanings of the above words in the disclosure in combination with the specific contents of the technical solution.
Referring to
To be specific, the frame body 100 is provided with a rotating seat 520, the rotating seat 520 can rotate by taking a vertical direction as an axial direction of a rotating shaft, and the control handle 500 is hinged to the rotating seat 520 and can rotate by taking a horizontal direction as the axial direction of the rotating shaft, so that the multi-directional rotation for the rotating seat 520 can be successfully achieved.
In some embodiments, referring to
To be specific, an end of the control handle 500 is hinged to the frame body 100, a connecting part of the pull rope and the control handle 500 is deviated from a rotation center of the control handle 500.
It is foreseeable that the lifting connecting structure 200 can also be composed of other components, such as adjusting a height position of the frame body 100 through a telescopic rod, and fixing the height position of the frame body 100 through structures such as a buckle. The specific implementation can be adjusted according to an actual need, which is not limited hereto.
In some embodiments, referring to
To be specific, the rotating seat 520 is provided with a through hole 515, and one end of the through hole 515 extends into the hidden rack 750. The frame body 100 is provided with a connecting port 710, the pull rope extends into the hidden rack 750 through the connecting port 710 and is connected with the control handle 500 through the through hole 515, so that the pull rope can be shielded and prevented from being exposed.
It is foreseeable that other components can also be driven by the pull rope, and each pull rope is hidden in the hidden rack 750. The specific implementation can be adjusted according to the actual need, which is not limited hereto.
In some embodiments, referring to
In some embodiments, referring to
To be specific, the rotating seat 520 is connected with a connection torsion spring 531, and the connection torsion spring 531 is connected with the sliding block 537. The rotating seat 520 can drive the sliding block 537 through the connection torsion spring 531 when rotating, and the connection torsion spring 531 can convert the rotation of the rotating seat 520, so that the sliding block 537 is hard to be influenced by a torque brought by the rotating movement, and the sliding block 537 can slide smoothly.
It is foreseeable that the translation connecting structure 530 can also be composed of other components, for example, the cushion is driven by an eccentric wheel to swing eccentrically relative to the frame body 100, so as to achieve displacement adjusting. The specific implementation can be adjusted according to the actual need, which is not limited hereto.
In some embodiments, referring to
To be specific, a pushing spring 540 is connected to a bottom of the clamping block 533, and the sliding block 537 is connected with a reset spring 532. The reset spring 532 can drive the sliding block 537 to reset after the control handle 500 removes a force applied to the sliding block 537. In this process, the pushing spring 540 will automatically drive the clamping block 533 to reset and clamp in the clamping groove 305, so that the cushion connecting part 300 can automatically reset.
It is foreseeable that a position of the clamping block 533 can also be manually adjusted by the occupant. The specific implementation can be adjusted according to the actual need, which is not limited hereto.
In some embodiments, referring to
To be specific, the frame body 100 is provided with a control knob 600, and the control knob 600 is connected with a locking latch 470 through a pull rope. The connecting shaft 440 is provided with a locking member 460, the locking member 460 is provided with a blocking step, the frame body 100 is internally provided with a reset torsion spring connected with the locking latch 470 and used for driving the locking latch 470 to move towards the blocking step, the locking latch 470 is used for abutting against and blocking the rotation of the blocking step. The control knob 600 can drive the locking latch 470 to move away from the blocking step by the pull rope. When the control knob 600 does not exert a force on the locking latch 470, the reset torsion spring will exert a force on the locking latch 470, so that the locking latch 470 moves towards and abuts against the blocking step. After that, because the blocking step and the locking latch 470 are mutually blocked, the connecting shaft 440 will be blocked at the blocking step to be unable to move continuously, so as to directly and effectively lock a rotating position of the backrest. After the control knob 600 exerts a force on the locking latch 470 through the pull rope, the locking latch 470 can be driven away from the blocking step, so that the connecting shaft 440 can continue to rotate, and thus smoothly adjusting the backrest.
In some embodiments, referring to
In some embodiments, referring to
Further, the connecting member 831 is provided with two clamping teeth 832, and the two camping teeth 832 are located on both sides of the gear 835 respectively.
In a second aspect, an embodiment of the disclosure provides a chair, comprising the above base frame assembly. The frame body 100 is liftable relative to a ground and other parts by the lifting connecting structure 200, movable relative to a cushion by the translation connecting structure 530, and able to drive a backrest to rotate by the backrest connecting structure 400, so that each state of the chair can be smoothly adjusted to a target state for an occupant. When adjusting each state of the chair, the occupant only needs to drive the control handle 500 to move or rotate in a corresponding direction, so as to achieve adjustment to the corresponding state. As the adjustment to various states can be achieved by the control handle 500, the time and effort required by the occupant to find and drive the adjustment parts respectively when adjusting a plurality of chair states can be effectively reduced, thus effectively achieving convenient and quick use.
The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as no contradiction exits between the combinations of these technical features, the combinations should be considered within the scope recorded in this specification.
The embodiments of the disclosure have been described in detail with reference to the accompanying drawings, but the disclosure is not limited to the above embodiments, and various changes may be made within the knowledge of those of ordinary skills in the art without departing from the purpose of the disclosure.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2024100954761 | Jan 2024 | CN | national |
