CN101579176A - Office chair capable of bending backwards used by modern knowledge workers - Google Patents

Abstract

The invention provides an office chair capable of bending backwards used by modern knowledge workers. The chair comprises a seating and leaning on part provided with a backrest and hand rests, a tabletop connected into a whole with the seating and leaning on part, supporting columns fixedly connected under the seating and leaning on part, and a base under the supporting columns. The base is fixed on a floor; a less differential gear reductor which causes the supporting columns to bend backwards so as to lead the seating and leaning on part to bend backwards is arranged between the base and the supporting columns; simultaneously, the table top is fixed with a skidproof blend stop, wherein the shell of the less differential gear reductor is fixedly connected with the base; and an input shaft of a high-speed end of the less differential gear reductor is an output shaft of a motor, an output member of a low-speed end thereof is a driven plate which is fixedly connected with the supporting columns. In fact, the less differential gear reductor is utilized to be taken as a 'joint' of the office chair for bending backward, thereby providing a safe office chair for the modern knowledge workers that can really have a rest and relax at an original place.

Description

The swung back office seating that a kind of modern knowledge worker uses

Technical field

The present invention relates to self have the office seating of desktop.

Background technology

In existing office furniture, a kind of office seating that himself has a desktop is arranged.This desktop be positioned at seat part the place ahead, partly connect as one at the front end place and the seat of armrest (common right handrail).This desktop area is little, is commonly used to place a spot of office accommodation (or articles for use).It is limited that this office seating is particularly suitable for the place, and the office or the study occasion of user's office accommodation few (or used books are few during study).At present, many modern knowledge workers that handle official business or learn with notebook computer are as the researcher, design and develop personnel etc., because of it just only uses a notebook computer basically, so office or study on this office seating just all are accustomed to being sitting in limited place in the place.In most cases, place the place of this office seating, its office space all is limited, generally all can not place other furniture that sofa, chaise longue etc. are had a rest for the modern knowledge worker in addition again; And most of modern knowledge workers are after entering duty, often continuous operation several hours even more time.They feel that health is tired out, brain fag or when entering the state that ponders a problem, also can only recede body a little at the most little by little leans against on the backrest---obviously, the health of this moment be not in actually real loosen, resting state.In other words, the modern knowledge worker is sitting on the original position of existing this office seating, even having a rest, its body and mind can not obtain real loosening.

Summary of the invention

The objective of the invention is, provide a kind of modern knowledge worker only to be sitting in the office seating that original position just can be loosened, have a rest.

The technical scheme that realizes described purpose is the swung back office seating that a kind of modern knowledge worker uses.Aspect same as the prior art is, this office seating comprises the seating part that has backrest and handrail, be positioned at this seating part the place ahead, at the desktop that front end place and this seating of a handrail partly connects as one, connect firmly at the support column of this seating part bottom and be positioned at the base of this support column bottom.Its improvements are that the base among the present invention is fixed on the ground; Between this base and support column, be connected with a little tooth difference speed reducer that can allow this support column retreat and then its seating part is faced upward backward; Simultaneously, be fixed with the blend stop of the office accommodation landing that prevents to put thereon on the desktop.Wherein, the casing of described little tooth difference speed reducer is fixedlyed connected with this base, and the speed end power shaft of this little tooth difference speed reducer is the output shaft of a motor, and the output link of its low speed end is a clutch plate, and this clutch plate and support column connect firmly together.

Those skilled in the art is fully aware of, little tooth difference speed reducer (comprise the title difference but be the decelerator that manufactures and designs according to " few tooth poor " principle equally) is though there is multiple different concrete structure, but they all have a common characteristic, and that is exactly that very big gearratio (usually all greater than 80, more big speed ratio reaches 150 or more) is all arranged.As the modern knowledge worker who is sitting in office on the office seating of the present invention, study, feel that health is tired out, in the brain fag, or to enter before the state that ponders a problem, as long as the described motor of starting, the seating part of this office seating will feel that at it layback position of loosening fully stops motor more very lentamente to layback.This just is equivalent to, and become seat for chaise longue this moment, can make modern knowledge worker's body and mind obtain real rest and loosen, it is pondered a problem under the state that body and mind loosens.

Simultaneously, owing to be fixed with blend stop on the table, the office accommodation of putting thereon can be because of its layback landing yet.

The more important thing is, very big mainly due to the little tooth difference speed reducer gearratio, in little tooth difference speed reducer, between each parts frictional resistance is arranged in addition, so, if attempt from the output of these little tooth difference speed reducers inversely power transmission enter and then allow the rotor of motor rotate (in fact being exactly to allow motor generate electricity inversely), so, the moment of torsion of its reverse input is with respect to the multiple of the starting torque of this rotor, and is also more much bigger than its gearratio.That is to say that under the normal situation of using office seating of the present invention, the layback and the reduction of this office seating seating part all can only transfer realization by motor positive and negative, have (under normal operating position) irreversible " self-locking " characteristic.

From the present invention program, it can also be seen that,, can also be equipped with different controlling organizations for wherein forward and reverse starting and the control that stops of motor.For example: for the situation of on the desktop of office seating of the present invention, placing notebook computer; can control by the control system of a single-chip microcomputer; input is equivalent to the such programmed instruction of computer " screen protection program " in this single-chip microcomputer, and between this single-chip microcomputer and notebook computer the USB mouth by separately, couple together with corresponding data line.After detecting certain hour; when its modern knowledge worker does not have rolling mouse or handles keyboard; single-chip microcomputer sends starting order just as computer starting " screen protection program " to electromotor control circuit, so that the seating of office seating of the present invention part is faced upward backward.Otherwise, as stopping " screen protection program ", send the back-to-back starting instruction to electromotor control circuit, again so that the seating of office seating of the present invention is partly recovered normal condition.

In a word, be actually " joint " that the seating part utilizing little tooth difference speed reducer, be used as its office seating is faced upward backward in the present invention, not only for the modern knowledge worker provide one only be sitting in original position just can really obtain having a rest with loosen, safety office seating, and, also, it provides further improved necessary condition for (promptly improving automaticity) aspect control.

The present invention is further illustrated below in conjunction with accompanying drawing

Description of drawings

Fig. 1---the present invention (not being in the layback state as yet) structural representation

The right view of Fig. 2---Fig. 1 (having placed a notebook computer on the desktop)

Fig. 3---(be with Fig. 2 reference) the present invention is in the structural representation of layback state

Fig. 4---the partial enlarged drawing in I zone among Fig. 1

Fig. 5---A-A is to profile among Fig. 4

Fig. 6---the partial enlarged drawing in III zone among Fig. 2

Fig. 7---the partial enlarged drawing in IV zone among Fig. 2

Fig. 8---the partial enlarged drawing in II zone among Fig. 1

The specific embodiment

The swung back office seating (with reference to figure 1,2,3) that a kind of modern knowledge worker uses.This office seating comprises the seating part that has backrest and handrail, be positioned at this seating part the place ahead, at the desktop 22 that front end place and this seating of a handrail partly connects as one, connect firmly at the support column 6 of this seating part bottom and be positioned at the base 30 of these support column 6 bottoms.That is to say that the present invention can also directly utilize existing office seating to come it is transformed (for example shown in Fig. 1, its support column 6 is partly with the existing office seating of height adjustment mechanism).In the present invention, base 30 (by foundation bolt 32) is fixed on the ground 31; Between this base 30 and support column 6, be connected with a little tooth difference speed reducer that can allow this support column 6 retreat and then the seating part of office seating is faced upward backward; Simultaneously, be fixed with the blend stop 19 (office accommodation that signal is drawn out among Fig. 2,3 is a notebook computer 21) of the office accommodation landing that prevents to put thereon on the desktop 22.Wherein, the casing of described little tooth difference speed reducer is fixedlyed connected with this base 30, the speed end power shaft of this little tooth difference speed reducer is the output shaft 8 of a motor 4, the output link of its low speed end be a clutch plate 6 ', this clutch plate 6 ' connect firmly together with support column 6.

Specify, among the figure expression ground 31 dissect symbol, being plotted in one does not have in the enclosed areas, the technical staff who is familiar with schematic diagram of mechanism is clear, in the case this dissects symbolic representation only is " frame ", do not represent it must be metal.Using this representation in the accompanying drawing, obviously is the steadiness of emphasizing " ground 31 ".It is equally evident that, base 30 is fixed on purpose and effect on the ground 31, all is in order to prevent that this office seating loses center of gravity and tumbles when the seating part of office seating is faced upward backward.According to this purpose and effect, as a kind of scheme that is equal to replacement be, the area design of base 30 is got enough big, to guarantee that the center of gravity after it changes still can be projected within the areal extent of this base 30 when the seating of office seating part is faced upward backward.The advantage of this alternative is that corresponding office seating just can move; Weak point is, and is excessive because of the area of its base 30, and may meet user and the people's of process pin from the side.

Disclose so far, those skilled in the art are again in conjunction with the understanding to superiority of the present invention, fully can be according to different condition and other requirements more specifically, or transform or directly design little tooth difference speed reducer wherein after selecting for use and it and office seating is combined.

In this specific embodiment, adopted the simple relatively little tooth difference speed reducer (with reference to figure 4,5) of a kind of structure.Concrete structure is: the casing of this little tooth difference speed reducer is left and right sides two clamping plates (11,11 '), and there is the vertical plane that is parallel to each other the inboard of this two clamping plates (11,11 ').Motor 4 is fixedly mounted on these left side clamping plate 11 with state, (by the screw 12) that its output shaft 8 flatly passes wherein left clamping plate 11; This output shaft 8 is in the part of these left clamping plate 11 inboards, from the interior internal-gear 1 that is set with an eccentric wheel 9, bearing 2, external tooth gear 10 toward the other places successively and meshes with this external tooth gear 10.Wherein, eccentric wheel 9 is that (by flat key 3) is enclosed within on this output shaft 8 regularly, and internal-gear 1 (by screw 7) is fixedly attached on these left side clamping plate 11.Under the medial surface state of contact of an end with slip state and these left side clamping plate 11 of eccentric wheel 9 and external tooth gear 10, the other end of this eccentric wheel 9 and external tooth gear 10 and the corresponding end coplane of this internal-gear 1.And support column 6 connect firmly together clutch plate 6 ' with the slip state be clamped in above-mentioned three's coplane end and right clamping plate 11 ' medial surface between; The state of this clutch plate 6 ' go up with matched in clearance is interspersed with a single mandrel 81, and the output shaft of this axle 81 and motor 4 is 8 coaxial, its external part is fixed on right clamping plate 11 ' on.On external tooth gear 10, at least two fingers 5 (what in figure draw out be six fingers 5) parallel with the output shaft 8 of motor 4 are installed symmetrically, the external part of this finger 5 be inserted in clutch plate 6 ' on the dial hole 61 corresponding with it in---the position and the hole wall of this dial hole 61, overlapping (that is to say of envelope cylinder of being marked when rotating with its external tooth gear 10 with this finger 5, the aperture of this dial hole 61 equals the eccentric distance e that finger 5 diameters add eccentric wheel 9, and the axis of the axis of this dial hole 61 and described envelope cylinder is overlapping).

Specify " left side " in the above-mentioned left and right sides two clamping plates (11,11 ') and " right side ", not " left hand, the right hand " the such meaning that definitely can not put upside down; Only be succinct in order to describe, clear, at the projected position of Fig. 4.

Further, on the basis of the aforementioned schemes and the specific embodiment, those skilled in the art can use conventional technological means fully, and proposition can be controlled the concrete scheme of the layback angle of (rather than manually controlled by the user) its office seating seating part automatically.The scheme of this specific embodiment is (with reference to figure 2,3,6,7): between the rear side and base 30 of support column 6, the limit switch assembly 20 that one cover air cylinder structure is installed with the hinged and diagonal brace state in its two ends ground is (obvious, be partly with at support column 6 under the situation of height adjustment mechanism, be positioned at the hinged seat of support column 6 one sides, should be arranged on outside the sleeve of its underpart), piston 15 two ends in these limit switch assembly 20 cylinders 14 are separately installed with the travel switch (16,16 ') of a closed type.Wherein, to be in normal operation position corresponding for the travel switch 16 that is positioned at piston rod 13 1 sides and the seating section branch of office seating; Away from the travel switch 16 of piston rod 13 1 sides ' to be in the position of maximum layback angle corresponding with the seating section branch of office seating.Obviously, the maximum of office seating seating part layback angle, should feel comfortably cool with most of modern knowledge workers is degree, experiment shows, swing back 15 ° just proper.It is equally evident that, under the not high enough situation of the backrest height of office seating, the headrest 29 that can rest the head on head should be set also above this backrest.

From above-mentioned disclosure and accompanying drawing thereof, those skilled in the art can find out that " limit switch assembly 20 " only has " air cylinder structure " and be not cylinder, uses the cylinder term and describes can be more succinct and clear.Obviously, under this configuration state, even do not speak up, those skilled in the art also knows all should leave necessary spiracle on the sidewall of cylinder 14.Because these spiracles have been arranged, the call wire 161 of travel switch (16,16 ') also can therefrom be drawn and needn't have been opened fairlead more in addition.In this specific embodiment, the axial limiting of travel switch (16,16 ') is by being transverse on cylinder 14 walls, and their latch 17 realizes and oppositely prop up.

Say that further the modern knowledge worker passes in and out the seating part of this office seating for convenience, has set out rotatable support governor motion (with reference to figure 1,8) in this specific embodiment.Concrete structure is: desktop 22 partly connects as one by fagging 23 of fixedlying connected with it seating with office seating.In the bottom of this fagging 23, near the front end place of a handrail of office seating have a rotating shaft 23 ', this rotating shaft 23 ' insert in the rotating shaft cover 24 that has been fixed on this handrail front end with the state of matched in clearance.Have in the side of rotating shaft cover 24 one its bump pearl 28 support to this rotating shaft 23 ' spring latch lock mechanism, this rotating shaft 23 ' on have one at least when desktop 22 is positioned at normal use location, bump the location pit that pearl 28 mates with this.Pass in and out in the seating part process of this office seating the modern knowledge worker,, promptly make things convenient for it to pass in and out this desktop 22 (with its fagging 23) turn-off.After the modern knowledge worker enters and settles down, again this desktop 22 is gone back to, when desktop 22 rotate back into normal use location, promptly bump pearl 28 supported into rotating shaft 23 in this position correspondence ' on the location pit time, just can carry out operate as normal.

For desktop 22 when the normal operation position, unlikely at random with regard to turn-off, at the tail end of the spring 26 of this spring latch lock mechanism an adjustment screw 25 can also be set, when the elastic force of spring 26 is big inadequately, to regulate; For prevent spring 26 front ends because of directly with bump pearl 28 offset exceedingly swipe this mechanism's inwall, cause inflexible problem, bump between the pearl 28 at spring 26 front ends and its, also can set up a guide posts 27.

Certainly, in order to allow the modern knowledge worker that certain angle sense, unlikely at will spinning and influence other people when this desktop 22 leaves normal operation position are maybe arranged when the rotary desktop 22, be on the circumference of sustained height at rotating shaft 23 ' outer wall and location pit, can also process several pits identical with this location pit.

Claims (5)

1. the swung back office seating that uses of a modern knowledge worker, this office seating comprises the seating part that has backrest and handrail, be positioned at this seating part the place ahead, the desktop (22) that partly connects as one in front end place and this seating of a handrail, connect firmly at the support column (6) of this seating part bottom and be positioned at the base (30) of this support column (6) bottom, it is characterized in that, described base (30) is fixed on the ground, between this base (30) and described support column (6), being connected with one can allow this support column (6) retreat, and then the little tooth difference speed reducer that described seating part is faced upward backward, be fixed with the blend stop (19) of the office accommodation landing that prevents to put thereon on the described desktop (22); Wherein, the casing of described little tooth difference speed reducer is fixedlyed connected with this base (30), the speed end power shaft of this little tooth difference speed reducer is the output shaft (8) of a motor (4), the output link of its low speed end is a clutch plate (6 '), and this clutch plate (6 ') connects firmly together with described support column (6).

2. the swung back office seating that uses according to the described modern knowledge worker of claim 1, it is characterized in that, the casing of described little tooth difference speed reducer is left and right sides two clamping plates (11,11 '), and there is the vertical plane that is parallel to each other the inboard of this two clamping plates (11,11 '); Described motor (4) with its output shaft (8) flatly pass wherein left clamping plate (11) state, be fixedly mounted on these left side clamping plate (11); This output shaft (8) is in the inboard part of these left clamping plate (11), from the interior internal-gear (1) that is set with an eccentric wheel (9), bearing (2), external tooth gear (10) toward the other places successively and meshes with this external tooth gear (10); Wherein, described eccentric wheel (9) is to be enclosed within regularly on this output shaft (8), and described internal-gear (1) is fixedly attached on these left side clamping plate (11); Under the medial surface state of contact of an end with slip state and these left side clamping plate (11) of described eccentric wheel (9) and external tooth gear (10), the other end of this eccentric wheel (9) and external tooth gear (10) and the corresponding end coplane of this internal-gear (1); Described clutch plate (6 ') with the slip state be clamped between the medial surface of above-mentioned three's coplane end and right clamping plate (11 '), the state that this clutch plate (6 ') is gone up with matched in clearance is interspersed with a single mandrel (81), and this axle (81) is coaxial with the output shaft (8) of described motor (4), its external part is fixed on the described right clamping plate (11 '); On described external tooth gear (10), at least two fingers (5) parallel with the output shaft (8) of described motor (4) are installed symmetrically, the external part of this finger (5) is inserted in the dial hole (61) corresponding with it on the described clutch plate (6 '); The position and the hole wall of this dial hole (61), the envelope cylinder that is marked when rotating with its external tooth gear (10) with this finger (5) is overlapping.

3. the swung back office seating that uses according to claim 1 or 2 described modern knowledge workers, it is characterized in that, between the rear side and described base (30) of described support column (6), the one limit switch assembly (20) that overlaps air cylinder structure is installed with the hinged and diagonal brace state in its two ends ground; Piston (15) two ends in this limit switch assembly (20) cylinder (14), be separately installed with the travel switch (16,16 ') of a closed type, wherein, it is corresponding that the travel switch (16) that is positioned at piston rod (13) one sides and the seating section branch of described office seating are in normal operation position, and the position that is in maximum layback angle away from the travel switch (16 ') and the seating section branch of described office seating of piston rod (13) one sides is corresponding.

4. according to the swung back office seating of claim 1 or 2 described modern knowledge workers uses, it is characterized in that described desktop (22) is to come partly to connect as one with the seating of described office seating by a fagging (23) of fixedlying connected with it; There is a rotating shaft (23 ') at the front end place of the bottom of this fagging (23), a close handrail of described office seating, and this rotating shaft (23 ') has been fixed in the rotating shaft cover (24) of this handrail front end with the state insertion of matched in clearance; Have in the side of rotating shaft cover (24) one its bump pearl (28) and support spring latch lock mechanism to this rotating shaft (23 '), on this rotating shaft (23 '), have one at least at described desktop (22) when being positioned at normal use location, bump the location pit that pearl (28) mates with this.

5. the swung back office seating that uses according to the described modern knowledge worker of claim 3 is characterized in that, described desktop (22) is to come partly to connect as one with the seating of described office seating by a fagging (23) of fixedlying connected with it; There is a rotating shaft (23 ') at the front end place of the bottom of this fagging (23), a close handrail of described office seating, and this rotating shaft (23 ') has been fixed in the rotating shaft cover (24) of this handrail front end with the state insertion of matched in clearance; Have in the side of rotating shaft cover (24) one its bump pearl (28) and support spring latch lock mechanism to this rotating shaft (23 '), on this rotating shaft (23 '), have one at least at described desktop (22) when being positioned at normal use location, bump the location pit that pearl (28) mates with this.

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