Multifunctional chair

Abstract

The present invention relates to a multifunctional chair which is configured to train, rehabilitate, and correct the back spine, pelvis and knee joints of the user. The angle of inclination of a seat member can be adjusted arbitrarily to the front, rear, left and right, thereby preventing back injury due to a sharp angle of inclination from the outset, while at the same time completely preventing rocking of the seat member when back exercises are not being carried out and thus allowing the chair to be used as a general chair. A rolling member provided in a lower part of the seat is improved, thereby imparting a cushioned feel to the seat while restricting the range of tilting movement of the seat to only front-and-back, left-and-right and multidirectional and preventing rotation in such a way as to limit excessive rocking of the seat overall and hence prevent side effects from seated exercises.

Description

TECHNICAL FIELD[0001]The present invention relates to a multifunctional chair which aims at training, rehabilitating and correcting a users back spine, pelvises and knee joints, and in particular to a multifunctional chair which is directed to preventing a waist injury which might occur due to a sharp slope angle when a user first sits by providing a function of freely adjusting a slope angle in forward, backward, leftward and rightward directions, and when a waist is not exercised, it is possible to prevent well the movements of a seat member, thus being used as an ordinary chair. The sitting seat is made to have a good cushion feeling by improving a rolling member provided beneath a seat, and the movement range of a slope of a seat is limited to a forward and backward direction and a leftward and rightward direction and multiple directions, respectively, whereas the rotation is prevented, thus limiting an over movement of a sitting seat in whole and preventing a side effect in ter...

AI Technical Summary

Benefits of technology

[0019]The present invention has very efficient effects since it is characterized in that it is possible to prevent injuries which might occur due to a sharp slope in such a way to properly adjust the slope angle depending on a user by providing a rolling adjusting means which can freely adjust the slope angles in the forward, backward, leftward and rightward directions of the rolling means installed at the lower side of the seat member, and the multifunctional chair of the present invention can be used for the purpose of an ordinary chair in such a way to handle the seat member not to move by making use of the rolling adjusting means, and a spring member, which is shaped like a double-headed drum with a narrow waist in the middle, is elastically installed at a rolling adjusting means, and the top of it is fixed at the upper housing fixed with the seat member, and the lower side of the spring member is fixed at the lower housing connected with the moving means, so the user can easily sit since the seat member is always positioned in normal place.

[0020]The present invention has advantageous effects that the multifunctional chair of the present invention can be usefully used as a multifunctional chair having both ordinary chair function and sitting type exercise function in such a way to prevent the injuries and side effects which might occur due to the over movements during the sitting type exercise by preventing the unnecessary twisting operations of the sitting seat during the sitting type exercise using the sitting seat as a hexagonal head part belonging to the rolling member is engaged to a hexagonal engaging groove provided at the height adjusting parts of the rolling adjusting lever and the fixing bracket which intermittently adjust the heights of the seat support member in terms of the rotations of the sitting seat when the sitting seat rolls in the forward, backward, leftward or rightward direction, and the multifunctional chair of the present invention can be efficiently used for a multifunctional chair which has both ordinary chair function and sitting type exercise function by providing a sitting seat with a cushion feeling with the aid of the material of the body of the rolling member and the compression spring provided in the interior.

Problems solved by technology

However, in the above described conventional multifunctional chair, the rolling mean B is characterized in that the slope angle of the rolling in terms of the seat member 1 is determined by means of a cushion member 57 made from a urethane material, when the elasticity of the cushion member 57 is weakened or it is damaged, the shape of the seat member 1 is deformed in one direction or the slope angles of the forward, backward, leftward and rightward directions become inaccurate, so the injuries of the users such as weak persons might be worsened.

Since there is not a means for fixing the seat member 1 in place, not to move, in the conventional art, it is needed for a user to sit after he adjusts the seat member 1 to a normal position, thus causing, any inconveniences.

Since there is not a means for adjusting a slope angle of the seat member 1 in a conventional art, when an old or weak person or a user who suffers from a weak waist sits carelessly, since the slope angle that the seat member 1 inclines at is too large, a user might have a waist injury.

However, in the above described conventional multifunctional chair, the rolling of the sitting seat contributes to adjusting step by step the rolling slope by adjusting the height of the seat support member by way of the rolling adjusting lever by adapting the vertical rod of the fixing bracket as an axis; however the rolling operation has a problem that it spins out of the movement ranges in the forward, backward, leftward and rightward directions of the sitting seat, so the over movements of the seat might cause side effects in terms of the sitting type exercise.

It is disadvantageous that the cushion feeling of the sitting seat is generally worsened in whole in the range of limiting the rolling operations, which results in the degradation of the chair which actually has both chair function and exercise function.

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