CN2125973U - Healthcare foldable chair - Google Patents

Abstract

The utility model relates to a healthcare foldable chair which is suitable for sitting positions of bending over the desk, positively sitting, and leaning. The utility model is especially suitable for work and study bending over the desk, which is beneficial to keep the health of the waist and the intestine and stomach part and the beneficial sight distance. When leaning and sitting, people can have the comfortable feeling, and the healthcare foldable chair can be used for an ordinary chair. The utility model conforms to the biomechanics property of the person sitting on the chair. The utility model is characterized in that a pair of claw 4 hinged between the lower end D of the slot of a back frame 2 and a sliding pin to form a positioning mechanism. The positioning mechanism can make the chair seat face obtain different tilt angles and an actual rotation center O near the knee joint of people which is coincident with various sitting postures. The healthcare foldable chair has the advantages of simple structure, portability, and practicality.

Description

Healthcare foldable chair

The utility model belongs to a kind of seat, and particularly a kind of bend over one's desk working and to be of value to the person when learning healthy and comfortable also can be faced upward the multifunctional folding chair of seat and central seats that directly face the stage.Suitable various people's bow seat, central seats that directly face the stage and face upward the seat posture and use.

The seat surface of common common seat generally be level or the minute angle that recedes slightly, and inclination of the seat surface is changeless.When this chair of people's seat was bent over one's desk working and learnt, lumbar vertebra was big to front curve, and stomach is subjected to certain compressing.The person that for a long time do not bend over the desk, waist is easily ached, and digestion function of stomach and intestine is influenced.Particularly steel folding seat seat surface is on the low side and recede slightly, when person's seat of short and small stature is bent over the desk, is difficult for keeping fit sighting distance and the health that influences eyes; And the more fat person's seat of health is especially obviously felt the constriction of stomach when bending over the desk.

Various inclination of the seat surface barbed chairs according to the interrelated data introduction, as GG87200160 and CN2048706U, be that the inclination of the seat surface guiding mechanism is complicated, be to use function few (as break-in top rake and seat surface center of rotation height no change only, or can not do common chair with), or be that chair is collapsible etc.

The purpose of this utility model provides that a kind of suitable people bends over the desk, central seats that directly face the stage and face upward the multifunction folding seat of seat appearance, it can make easily chair base surface turn forward, recede or the one-tenth level between choose at random and change and collapsible, when different situations are used, be of value to people's health and comfort is arranged.

The utility model is finished as follows: a kind of seat surface tiltable of being made up of back rest, seat surface framework and back leg becomes the folding seat at several inclination angles, it is characterized in that being hinged with two pawls between following hinge pin that is provided with of back rest upper hopper chute and the sliding pin on the seat surface framework, constitute two pawl detent mechanisms.Its feature is again that two pawls are hinged on hinge pin or the sliding pin, has the opening that several do not wait to pin joint place distance on two pawls.When these openings of pawl were stuck on sliding pin or the hinge pin, this pair pawl detent mechanism can be determined the different relative positions of sliding pin in chute, located when making chair base surface be inclined to inclination angle corresponding to people's seat appearance.

The people is at the seat of bowing, central seats that directly face the stage with when facing upward the seat appearance, and body's center of gravity is successively from high to low.Therefore, not only the seat surface of chair will correspondingly tilt, and the height of seat surface also will correspondingly change, and so just meets people's biomechanics characteristic.When chair base surface turns to top rake to become with horizontal plane from horizontal plane

During the angle, suit to bend over one's desk working and learn and use; When turning to rear-inclined to become the φ angle, the suitable seat of facing upward; When seat surface became level, suitable central seats that directly face the stage as conventional chair used.The utility model many usefulness simple in structure, light, the example structure that will describe in detail below adopting, number of parts and cost need increase hardly.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the folding seat of a kind of concrete structure of the utility model.

Fig. 2 is a schematic diagram of the present utility model.

Fig. 3 is the pawl (two) of the two pawl detent mechanisms of Fig. 2.

Shown in Figure 1 " zhang " seat surface framework 1, back leg 3 and the back rest (or claiming front leg) 2 of the hinged chute-type folding seat of font be hinged in twos.Hinge B place connects by the sliding pin on chute on the back rest 2 and the seat surface framework 15.During joint-stool, sliding pin 5 can slide relatively along chute.

When chair base surface will rotate and determine that two pawl detent mechanisms that the hinged pawl 4 of chute on the back rest 2 and pin joint D place, below thereof is constituted just can be determined the relative position of sliding pin 5 in chute when using with the corresponding incident angle of people's seat appearance.

Figure 2 shows that the operation principle of above-mentioned pair of pawl detent mechanism.When chair base surface framework 1 will lean forward During the angle, the opening a or the b on pawl 4 tops align with chute, and the relative position of sliding pin 5 with chute so just determined in the bottom that allows sliding pin 5 slide and fall opening a or b, and the forward tilt position of seat surface framework 1 has also just obtained determining.When seat surface framework 1 will be in a horizontal position, sliding pin 5 was fallen the bottom of the opening c of pawl 4.When seat surface framework 1 will recede into the φ angle, sliding pin 5 was fallen the bottom of the opening d of calvus 4, or whole calvus 4 turns to down around hinge pin D, and the bottom, lower end that sliding pin 5 is fallen chute gets final product.

Fig. 3 is two of the pawl 4(of the two pawl detent mechanisms of Fig. 2).On the pawl several openings to the distance at its pin joint place do not wait and when being in different angle by Fig. 2 seat surface framework 1 sliding pin 5 determine to the distance of hinge pin D.

Working as seat surface framework 1 among Fig. 1 is inclined to forward or backward

When angle or φ angle, the α angle correspondingly reduces thereupon or increases, and hinge A also correspondingly increases or reduces apart from the height on ground.Seat surface tilts and the compound motion of these two motions of lifting, can make near the roughly present edge in front, actual rotation center of seat surface, i.e. human knee joint O point place.So just obtained being suitable for that the people bends over the desk, central seats that directly face the stage and face upward seat surface position by three kinds of seat appearance biomechanics characteristics, give healthy comfort.

The inclination angle that chair base surface turns forward

Be generally 5 °～15 °, and sweptback declination angle is generally 5 °～20 °.

When chair base surface will turn forward into inclination maximum, the opening a on two pawls 4 is alignd with the chute of back rest 2, the opening a bottom that allows sliding pin 5 drop on two pawls 4 gets final product.Can make seat surface obtain different inclination angles in the same way, just when seat surface will recede into inclination maximum, two pawls 4 be turned to down, allow sliding pin 5 drop on the chute bottom and get final product.

Claims (2)

1, a kind of by back rest 2, seat surface framework 1 becomes the folding seat at several inclination angles with the seat surface tiltable that back leg 3 is formed, it is characterized in that being hinged with two pawls 4 between following hinge pin D that is provided with of back rest 2 upper hopper chutes and the sliding pin 5 on the seat surface framework 1, constitute two pawl detent mechanisms.

2,, it is characterized in that two pawls 4 are hinged on hinge pin D or the sliding pin 5 by the described folding seat of claim 1.

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