SK500542014U1 - Chair with balancing mechanism - Google Patents

Abstract

Described is a chair whose balance mechanism (9) is formed by a flexible element disposed between the seat (8) and the foot (2) of the chair. The flexible element is a progressive coil spring and a stabilizing mechanism (10) is arranged between or around the outside of the flexible element between the seat (8) and the chair leg (2).

Description

Technical field

The technical solution concerns a chair with a balancing mechanism between the seat and the chair leg.

BACKGROUND OF THE INVENTION

Currently, technical solutions are known which solve the problem of one-sided loading of the spine and pelvic area during sitting, especially long-term sitting, on a chair, which include a balance mechanism between the seat and the chair leg.

SK 5675 Y1 describes a chair with a stabilizing seat mechanism. This chair consists of an adjusting unit which on one side is detachably attached to the chassis and on the other side attached to a beam with a stable backrest to which is attached a hinged unit which on the other side is rotatably mounted in a case which is fixed to an unstable pad or unstable seat.

The disadvantage of this technical solution is that it is not possible to regulate the balance and instability of the seat. The seat is unstable when sitting and getting up, which reduces the user's comfort. Users with health problems may be at risk of accident or injury. In this solution, although the seat can be locked, the use of the seat lock reduces the comfort of the user, since the lock must be carried out repeatedly when sitting or getting up.

Another disadvantage of this solution is the complexity of the construction, which is negatively reflected in the manufacturing costs.

Furthermore, SI 20508 A discloses an active orthopedic chair whose design allows seat flexibility in all directions, thereby inducing seating on the ball and can replace conventional office chairs.

The seat of this active orthopedic chair is attached to the carrier through an element which

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allows seat flexibility in all directions. The element providing said flexibility may be a coil spring, a resilient element or a sliding mechanism.

A disadvantage of this solution is also that it is not possible in any way to regulate or eliminate the balance and instability of the seat. When sitting and getting up, the seat is permanently unstable, which may pose a danger to healthy users, but especially to users with health problems for whom this type of chair is primarily intended.

The essence of the technical solution

The aim of this technical solution is to eliminate or largely eliminate the shortcomings of the prior art, which consist in the impossibility of regulating the balance and instability of the seat, especially when sitting on and getting up from the chair. The present invention also seeks to eliminate these shortcomings while minimizing manufacturing costs, i. simplicity of construction of the technical solution.

Said objectives are achieved by a stool, with a balancing mechanism according to the present invention, wherein the balancing mechanism is formed by a flexible element arranged between the seat and the foot of the chair, the essence of the solution being that the flexible element is a progressive coil spring and A stabilizing mechanism is arranged between the seat and the chair leg.

The most advantageous constructional design of the stabilization mechanism, in terms of construction simplicity and manufacturing cost, is a coil spring.

It is also advantageous if the coil spring is a conical coil spring, since the narrower end of the spring fits well on the usually narrower end of the chair leg and the wider end of the spring is then circumferentially supported on the seat sufficiently far from the balance axis.

These objectives are also achieved by a chair with a balancing mechanism according to the present invention, wherein the balancing mechanism between the seat and the foot of the chair comprises a fixed balancing axis to which a stabilizing mechanism consisting of a flexible element arranged between the seat and the foot of the chair is associated. the flexible element is formed by at least three pistons selected from the group of hydraulic, air or spring or combinations thereof.

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A chair with a balancing mechanism according to the present invention provides the advantage that its seat is seated or standing up when the seat is not being directed by the user's weight or is still being driven. moved to a substantially central position, practically to a position that is characteristic of a conventional fixed chair seat. This substantially eliminates the unwanted tilt or position of the seat when sitting or getting out of the chair, and thus, even for the user, sitting or getting up from such a chair becomes more secure.

BRIEF DESCRIPTION OF THE DRAWINGS

The technical solution is shown in the accompanying drawings for better understanding, where Figure 1 shows the overall front view of the chair according to the present invention with a balancing mechanism formed by a flexible element between the seat and the chair leg where the flexible element is progressive coil spring and conical around the spring the coil spring of the stabilization mechanism;

Figure 2 shows a detail of the balancing mechanism and stabilizing mechanism of Figure 1 in an unloaded state, with partial removal of the spring drawing of the stabilizing mechanism in the spring region of the flexible member for better clarity;

Figure 3 shows a detail of the balancing mechanism and the stabilizing mechanism of Figure 1 in a loaded state, with partial removal of the spring drawing of the stabilizing mechanism in the spring region of the flexible member for better clarity;

Figure 4 shows an overall side view of the chair of Figure 1;

Figure 5 shows an overall front view of the chair according to the present invention with a balance mechanism between the seat and the chair leg with a fixed balance axis to which a piston-stabilizing mechanism is associated;

Figure 6 shows a detail of the balance mechanism and the stabilization mechanism of Figure 5.

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EXAMPLES

The chair with the balancing mechanism according to FIGS. 1 to 3 is formed by a foot in this case by a bogie 1, to which a height-adjustable element 2 with a control 3 is detachably attached. On the height-adjustable element 2 is a supporting part 4.

The support part 4 in this case carries the chair back 6, the armrests 7 and the balancing mechanism 9 with a flexible balancing axis formed by a flexible element, in this case a progressive coil spring.

A stabilizing mechanism 10 is provided on the outside of the balancing mechanism 9. The stabilizing mechanism 10 comprises a flexible element, which in this case is formed by a coil spring arranged around a spring constituting the flexible balancing axis of the balancing mechanism 9. On the balancing mechanism 9 and the stabilizing mechanism 10 placed seat 8.

In this example, the spring of the stabilizing mechanism 1 is a conical spring that extends from the carrier 4 to the seat 8.

The seat is stabilized by the stabilizing mechanism 10 in the saddle. By its arrangement, the stabilizing mechanism 10 reduces the instability and balance of the seat 8. After seating and loaded seats, the progressive coil spring 9 is compressed, the spring stiffness of the balance mechanism 9 is increased and the balance axis is formed. The seat 8 becomes unstable and allows movement in all directions, imitating seating e.g. on the fitlopte, strengthens the back muscles, eliminates muscle disbalance and prevents improper posture.

Then, when getting up from the chair, the stiffness of the progressive spring decreases and the spring action of the stabilizing mechanism increases, thereby positioning the seat in a stable position.

The balancing mechanism 9 and the stabilizing mechanism 10 can be manufactured in various combinations of load capacities, thereby adapting the chair to the requirements of the user, possibly according to the physician's recommendations.

The chair with the balancing mechanism of Figures 5 and 6 is basically the same construction as the chair of the preceding embodiment, except that the balancing mechanism 9 comprises a fixed balancing axis. The fixed balancing axis extends from the support part 4 or it may also be a continuation of the height-adjustable element 2. A seat 8 is located on the fixed balancing axis of the balancing mechanism 9.

4, the seating of the seat 8 on a fixed balance axis is known and can be formed in any known manner. The stabilizing mechanism 10 in this case comprises a flexible element formed by at least three pistons. The pistons are attached with one end to the seat 8 and the other end to the leg of the chair, in this case the height-adjustable element 2.

By using pistons of different length, stiffness and sequence of onset of the piston resistance it is possible to adjust the properties according to the user's requirements. Smooth sideways movement can be achieved during the initial tilt phases for increased safety. In the case of using pistons with the possibility of adjusting their parameters, the properties of the balancing mechanism 9 can be adjusted according to the user's requirements or the doctor's recommendations.

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Claims (3)

PROTECTION REQUIREMENTS A chair with a balance mechanism, wherein the balance mechanism consists of a flexible element arranged between the seat and the chair leg, characterized in that the flexible element is a progressive coil spring and is outside or around the flexible element between the seat (8) and the chair leg (2) an arranged stabilization mechanism (10). A balancing mechanism chair according to claim 1, characterized in that the stabilizing mechanism (10) is a coil spring. A balancing mechanism chair according to claim 2, characterized in that the coil spring is a conical coil spring.