The present invention relates to a seat, and more particularly to a seat with adjustable support according to need.
A conventional seat has a base and two sponge cushions mounted on a top surface of the base. A user sits on the conventional seat, and the two sponge cushions respectively support a left hip and a right hip of the user. When sitting posture of the user is changed, pressures stressed on the two sponge cushions may be different, and deformations of the two sponge cushions may be different as well to fit the user. However, the support of the seat is only provided by the two sponge cushions and is insufficient.
For increasing the support of the conventional seat, another seat is applied and has the base, a seat cushion, and multiple oscillating members. The seat cushion is mounted on the base and has a board and a cushioning body mounted on the board. The oscillating members are mounted between the base and the seat cushion. Each one of the oscillating members has an oscillating plate, a first pivoted portion, and a second pivoted portion. The oscillating plate is located between the base and the board. The first pivoted portion is mounted on the oscillating plate and is tiltably connected to the base. The second pivoted portion is mounted on the oscillating plate and is tiltably connected to the base. When the sitting posture of the user is changed, the seat cushion can move relative to the base by the oscillating members. However, each one of the oscillating members can provide sufficient support by the first pivoted portion and the second pivoted portion, but cushioning performance of the oscillating members is not good.
For improving the cushioning performance, still another seat has the base, the seat cushion, and multiple buffer members. The seat cushion is mounted on the base and has the board and the cushioning body mounted on the board. The base has multiple assembling recesses and multiple positioning protrusions. The assembling recesses are formed on a bottom surface of the base. Each one of the positioning protrusions is formed on an inner-top surface of one of the assembling recesses. The buffer members are respectively disposed in the assembling recesses. A bottom end of each one of the buffer members abut against the base. A top end of each one of the buffer members abut against the board around a corresponding one of the positioning protrusions. In use, the buffer members can provide good cushioning performance. However, there is a gap formed between each one of the buffer members and a corresponding one of the assembling recesses. The bottom end of each one of the positioning protrusions does not protrude out of a bottom surface of the board. Thus, the positioning protrusions cannot effectively guide the buffer members to compress vertically. The buffer members are easy to laterally deviate excessively to decrease the support.
To overcome the shortcomings, the present invention provides a seat to mitigate or obviate the aforementioned problems.
The objective of the invention is to provide a seat that can solve the drawback that the support and the cushioning performance of the conventional seats are not good.
The seat of the present invention has a base, two seat cushions, and two supporting members. The base has multiple through holes formed through the base. The two seat cushions are disposed above the base and are laterally arranged. Each one of the seat cushions has a front half section, a rear half section, a board disposed above the base, a cushioning body mounted on a top surface of the board, and a frame structure mounted on a bottom surface of the board. Each one of the two supporting members is mounted on the frame structure of a corresponding one of the two seat cushions, is connected to the base, and has multiple supporting elements. The supporting elements are respectively located at the front half section and the rear half section of the corresponding one of the two seat cushions.
Each one of the supporting elements has a guiding rod and a spring. The guiding rod is mounted on the base and has a head and a shank. The head is located on a bottom surface of the base. An outer diameter of the head is larger than a diameter of a corresponding one of the through holes. The shank is formed on the head, is movably inserted through the corresponding one of the through holes, and is screwed into the frame structure of the corresponding one of the two seat cushions. The spring is disposed around the shank of the guiding rod. Two ends of the spring respectively abut against the base and the frame structure of the corresponding one of the two seat cushions.
The seat is mounted on legs of a chair. When a user sits on the seat, the user's left hip and left thigh rest on one of the two seat cushions, and the user's right hip and right thigh rest on the other seat cushion. The two seat cushions move downwardly according to pressures stressed on the two seat cushions. In the movement of one of the supporting elements, the shank of the guiding rod moves downwardly relative to the base, and the spring is compressed along an axial direction of the shank to avoid deviation by the shank and provide good support.
In addition, the supporting elements of each one of the two supporting members are respectively located at the front half section and the rear half section of the corresponding one of the two seat cushions. According to the difference of the user's sitting posture and the change of the pressures stressed on the two seat cushions, the spring of each one of the supporting elements can generate different degrees of compression and provide different degrees of supporting force to form a multi-point support configuration and to increase support effectively. The spring can provide a cushioning performance simultaneously. The seat has both the support and the cushioning performance to improve sitting comfort.
Furthermore, in each one of the supporting elements, the shank of the guiding rod is screwed into the frame structure of the corresponding one of the two seat cushions. The guiding rod can be rotated according to the user's needs to adjust the support of the spring for satisfying individual differences.
Other objectives, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
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