Patent Application
20190239651
The present invention relates to a foldable chair structure, and more particularly to a wall-mounted foldable chair.
According to a prior art, a foldable seat comprises: a supporting frame a rotatable frame, and a seating member. The supporting frame is mainly composed of a two locking bars extending laterally from both ends of a rotating rod. Furthermore, a connecting tube parallel to the rotating rod is connected between the two locking bars. One end of the rotating rod is provided with an elastic sheet and a pressing block on the elastic sheet protruding through a through hole opened on the rotating rod. A connecting rod is pivoted at the connecting tube and a free end of the connecting rod is provided with a through aperture. A rotatable frame is formed as a U-shaped elbow and a rotation shaft is connected to its middle section, and the rotating frame passes through the through aperture of the connecting rod with the rotation shaft. Furthermore, two openings of the U-shaped elbow are connected with a shaft rod. The seating member is provided with two secure bars at its lower end, each secure bar is provided with a receiving opening, the receiving openings respectively sleeves onto the two ends of the rotating rod and the shaft rod, to form a rectangular frame with the secure bars, the rotating rod and the shaft rod. Moreover, the connection between the secure bar and the rotating rod is provided with an elastic sheet having a pressing block and a corresponding pressing hole.
It is not difficult to find shortcomings of the above conventional structure. The main reasons are as follows: When the conventional structure of the chair is unfolded, by pressing the U-shaped elbow of the rotatable frame against the wall, the friction created between the rotatable frame and the wall forms a resistance so as to achieve the support of the rotatable frame relative to the seating member. However, when a user is actually sitting on the seating member, due to the small surface area of the seating member, the weight might completely falls on the front end of the seating member, resulting in uneven bearing of the rotatable frame causing deformation.
Second, since the supporting frame is pivotally connected with a long connecting rod, the rotatable frame forms a U-shaped elbow and is connected to the rotation shaft. With the connection between the rotation shaft and the connected rod, when the chair frame is collapsed, the length of the connecting rod prevents the rotatable frame from moving closer to the supporting frame. In addition, the U-shaped elbow of the rotatable frame cannot achieve a folding effect, instead of increasing the occupied space and reducing the practicality of the structure.
Therefore, it is desirable to provide a wall-mounted foldable chair to mitigate and/or obviate the aforementioned problems.
An objective of present invention is to provide a reinforcement for a hub ratchet base which is capable of improving the above-mention problems.
In order to achieve the above mentioned objective, A wall-mounted the foldable chair comprises a supporting frame, a rotatable frame and a seating member. The supporting frame has two L-shaped assembling bars, and an end of each assembling bar is fixed onto a wall surface with a mounting member. Another end of each assembling bar is connected to a horizontal axial tube, and a shaft rod is mounted parallel to the axial tube between the two assembling bars and provided with a pivoted connecting rod. The connecting rod is bent and has an arm section and a supporting section. The rotatable frame is provided with a rotation shaft, at least two parallel supporting leg frames connected to the rotation shaft, and a connecting bar parallel to the rotation shaft and between the two supporting leg. A bottom of each supporting leg member of the rotatable frame is connected to form a U-shape and further provided with an anti-slip pad. The connecting bar is pivotally connected to another end of the connecting rod. The connecting bar of the rotatable frame is further sleeved with two side tubes sandwiching the connecting rod to position the connecting rod at a middle of the connecting bar. Furthermore, an end of each of the two side tubes is provided with a resilient plug, and the two resilient plugs are configured to push against the two supporting leg members and respectively engage the two ends of the connecting bar by a locking member. Therefore, the rotatable frame is able to rotate relative to the supporting frame via the connecting rod. The seating member has a pad member and two parallel secure rods below the pad member. Each of the two secure rods respectively has two assembling holes rotatably and respectively jacket onto two ends of the axial tube of the supporting frame and two ends of the rotation shaft of the rotatable frame, to form a rectangular structure with the axial tube, the rotation shaft and the two secure rods. Accordingly, the seating member moves with the supporting frame and the rotatable frame.
Other objects, advantages, and novel features of invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
Please refer to
For structure assembly, please refer to
For actual use, please refer to
Furthermore, in order to store the structure, please see
By the structure of the above specific embodiments, the following benefits can be obtained:
(1) The chair frame structure needs less components, and the supporting frame 10, the rotatable frame 20 and the seating member 30 are easy to manufacture, which increases production efficiency, only needs a quick assembly, and reduces the cost of the structure.
(2) When the structure of the chair frame is unfolded, the opening frame 20 and the seating member 30 are perpendicular to each other and are supported on the ground by the two supporting leg members 22. Moreover, the rotatable frame 20 and the supporting frame 10 are connected and restricted by the connecting rod 14, to ensure the stability of the rotatable frame 20.
(3) The connecting rod 14 is bent to have the arm section 141 and the supporting section 142, which can drive the rotatable frame 20. When the rotatable frame 20 is to be retracted and folded, the rotatable frame 20 can be further folded closer to the supporting frame 10 due to the curved connecting rod 14, which substantially reduces the volume of the folded frame.
Although the present invention has been explained in relation to its preferred embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of invention as hereinafter claimed.
