CN1857135A - Adjustable office arm chair structure with seat and back rest synchronous moving connecting mode - Google Patents

Abstract

The office chair with synchronous regulation of seat and back has the structure including a caster wheel type movable pedestal, a height adjustable strut on the pedestal to support the hinged seat and back, and a head rest and a waist support supported with the back. The office chair features the central support bearing the seat and fixed through a vertical shaft to the top of the adjustable strut, two arm rest supporting struts with height regulator and back locking device and supported with the central support in the bottom, the back supporting frame for the central part of the arm rest supporting struts to be hinged to and connected to the back part of the seat, and the built-in compression spring set between the central support and the back supporting frame.

Description

Have and make the be synchronized with the movement adjustable office arm chair structure of connecting mode of seat and backrest

Technical field

The present invention relates to a kind of have make the be synchronized with the movement adjustable office arm chair structure of connecting mode of seat and backrest.

Background technology

The application particularly points out not unique field, high-quality seat that is applied to office furniture.。

That yes is known for adjustable office seat and armchair.In order to obtain than those more comfortable seats of low-quality static type chair, except being provided, a device adjusts height, and also to utilize a kind of device to control swing, this device just directly is arranged on the following of seat surface usually and is integral with it.Said device can further activate by leverage, and this leverage projection and be easy to grasping and follow other direction rotation along a direction does not thus provide up to interior arrangement till the release of above-mentioned connection.

In brief, can assert that for this reason following content is known:

-chair, wherein seat and backrest are positioned at independently on the main body, and the two is to connect in such a way, and promptly the gradient of backrest is consistent with the motion that the seat is parallel to the bottom surface;

-chair wherein has only backrest to freely swing;

-chair, wherein the rising of seat face is consistent with the gradient of backrest;

-chair, wherein seat and backrest are all adjustable respectively;

-last, chair wherein seat and backrest interconnects, and realizes synchronous banking motion.

The related art of invention

Be first dynamic apparatus of chair described in FR 2075176 (Suspa) for example, this device has the base that is equipped with a plurality of support arms, and erectting on it has pillar to constitute gas collecting jar with ground-on cover plate.End at said gas collecting jar with ground-on cover plate is inserted into whole cutting off the round taper hole that obtains from the box-like hermetically-sealed construction of this device, and the button on this gas collecting jar with ground-on cover plate end comes application piston to stretch out.

U.S. Pat 4986601 (Inoue) even more noteworthy, it mentions the swing mechanism that supports chair and back, this swing mechanism comprises the centre strut that stretches out from chair base, be connected to first Support bracket on the centre strut by pedestal, can be connected on the seat and be hinged to second Support bracket of first Support bracket by axle, be connected to the back support and be hinged to the 3rd Support bracket of second Support bracket and the axle of hinged first Support bracket to the, three Support brackets by axle.US4986601 (Inoue) also has the gas piston that has valve by lever operation, is arranged on and is used for adjusting selectively the pillar height on the centre strut.Last US4986601 (Inoue) also provides and has been arranged between first carriage and second carriage to produce the spring assembly of reaction force on second Support bracket.

DE0198056 (Neumuller) also merits attention.It shows the swing mechanism of a kind of support chair stroma plane and back, this swing mechanism comprises the centre strut that stretches out from chair base, be connected to first Support bracket on the centre strut, can be connected on the seat face and be connected to second Support bracket of first carriage by first rotating shaft, be connected on the backrest and be hinged to the 3rd Support bracket of second Support bracket, also have the device that first Support bracket is hinged to the 3rd Support bracket by second rotating shaft.DE0198056 (Neumuller) also provides the spring assembly that is arranged between first Support bracket and second Support bracket, is used for producing reaction force in the motion of second carriage.DE0198056 (Neumuller) also is provided with locking device, and locking device comprises and have a plurality of disks the 3rd rotating shaft that is connected first carriage of cooperating with each other and the 4th rotating shaft that is connected second carriage that prolongs groove that rotating shaft wherein is a penetrating type.The bar that links to each other with respective axes of rotation allows disk friction to clamp, and disk keeps together by this way.

A kind of mechanical device that specifically is synchronized with the movement at the seat and the backrest of chair has also been described in IT 1236439 (Miotto).The characteristics of this application are that it comprises first Support bracket, this Support bracket its end be connected in the centre strut that stretches out from rotating base and second a support bracket fastened end crosscut be mounted on the said chair, said second analog bracket crosscut ground and the axial line that deflects away from said centre strut are hinged on the other end, and the 3rd analog bracket of said backrest, said backrest has guider and realizes its swing with respect to said first carriage and second carriage, and the 3rd analog bracket has the selection of being used for and is locked in said first, the device of a plurality of positions of the second and the 3rd tray chamber.

Because ITTV 2000A000084 (Bordin) has described a kind of structure with bionic chair-armchair of headrest adjustable and lower backrest, therefore also merit attention, this structure comprises the base that has relatively perpendicular to the support bar of seat face and backrest, the type of backrest is to stretch out plate from the both sides of chair-armchair to obtain, on the backrest, the support component of headrest and low backrest is according to the profile development of the backrest of the near zone of backrest rear side, be fixed on one side the seat face below, another side is fixed on the connecting band between the chair side; Wherein furthermore, said headrest and low backrest are can be along said support component adjustment, and provide the selection locking device.

Shortcoming

Brief says, it can be asserted that these three applications of US4986601 (Inoue), DE0198056 (Neumuller) and IT1236439 (Miotto), because the interaction of three carriages, and conceptive closely similar, these three applications all require a plurality of elements, and this causes the structure of chair complicated especially.Except the main difficulty that causes assembling stage and inevitable too much time, also can cause in the warehouse irrational management to the single code of discerning each element.

On the other hand, In the view of the applicant, this structure is because the frictional force between single parts makes the function that connects reduce, and this not only makes to connect and becomes inessential, neither provide the more optimization structure of soft feel for the user.

Passive aspect in addition relate to according to the inoperative position of adjusting device control lever select to lock-do not lock being synchronized with the movement of seat and backrest.

Passive aspect also relates to has extreme position and an adjustment degree in order to the waist support arrangement that loosens the lumbar region, rear portion.In this case, known to solution in the support of existing waist have complicated especially supporting construction and be unpractical according to application.

Summary of the invention

According to the feature that is comprised in the claim, realize that these and other purpose of the present invention is to solve the problem that is proposed by the office chair structure that the mode of being synchronized with the movement with adjustable type seat and backrest connects, this structure comprises the type movable pedestal of turning, on base, stretch out the carriage that adjustable for height pillar comes the supporting seat plane and is hinged, this back rest supports headrest, and the waist support also can be regulated, wherein:

-seat face is connected to the corresponding front side of central support with two with being with forward directions, but central support is fixed on the top of adjustable fixing along vertical axis;

-support the bottom of two handrail posts with rotating shaft at the central support rear portion, handrail post has the device of the height that is used for regulating the seat and the locking-non-locking device of control backrest and chair swing, and said pillar further is hinged on the center of back support frame end end;

The framework of-backrest is hinged along the side and with seat back;

-compression spring is built between the support frame of central support and backrest.

Advantage

Therefore, obtained some target by utilizing quite creative device, the effect of this device is to have improved technological level immediately, can produce fully than the settling mode softness that has existed the chair of Duoing.

Because the quantity of element is few, the light in structure of chair makes said chair almost not have frictional force when mobile, and noise also reduces thereupon and the wearing and tearing of element reduce.

Second purpose is to make the adjustment control device of common adjustment control device that tilts of seat and backrest and seat height more practical.The 3rd purpose is to propose a kind of chair, proposes the optimum position and damage preventing in whole coordination, not only controlled and adjusted the common seat that tilts and backrest but also control the height of adjusting the seat.

Along with the minimizing of number of elements, further purpose is conspicuous, i.e. the management in warehouse is obviously simplified, and saves time and reduce cost.

In a word, might produce the Chair structure with high technology content, be that the public provides function as much as possible with rational cost.Embody among will be hereinafter special at least one embodiment that describes of these and other advantage, embodiment has the help of appended schematic diagram, and the details of schematic diagram is not restriction and only be explanation.

Description of drawings

Fig. 1 is the side view that seat face and backrest are in the office chair structure of resting guard;

Fig. 2 is rendered as that the seat is set level and the side view of the office chair structure of backrest inclination;

Fig. 3 is the vertical view of same office chair structure among the last figure;

At last, Fig. 4 is the lateral side view of office chair structure among the last figure.

The specific embodiment

Still with reference to accompanying drawing, can see that office armrest A is the type that is made of base 1, base 1 support level thereon portion seat face 2 and with the backrests 3 that are connected mutually as face 2.

In this case, can see that base 1 comprises a plurality of spokes of installing radially 10 that are hinged with rotation castor 11 at each end.All collect in the low side of vertical column 12 at the other end of each spoke 10, vertical column 12 comprises traditional gas collecting jar with ground-on cover plate, and the bar 121 of gas collecting jar with ground-on cover plate is installed in the top of central support 4.

In more detail, said central support 4 comprises the plate 40 with circular cone annular opening hole, and coaxial with the bar 121 that can start, and the top of bar 121 is provided with button.Said plate 40 is set to suspend and reaches on a pair of curved slightly parallel arms 41 of front portion at seat.What be hinged with the end 410 of each said arm 41 is support 5, and support 5 is articulated with projection 21 successively, and projection 21 is meshed with the support component that crosses along the bottom surface of seat face 2.

Said central support 4 also has the low side 61 of the pair of posts 6 that is hinged at arm 41 other ends, and each pillar 6 all correspondingly configured arm 60 in top braces.On point and the position between the builder arm 60 that pillar 6 and central support 4 are articulated, the bottom 30 of the supported on both sides framework of backrest 3 is mutually hinged, and said in addition back support frame 3 is L-shaped and fix at 31 places along the rear portion of the opposite side 20 of seat face 2.Like this, the crooked vertical component effect of back support 3 protrudes upward.In addition, the connection between back support frame 3 and the central support 4 is made of spiral compression spring 7 as can be seen, and in the process of chair swing, spiral compression spring 7 supports user's weight.Said spring 7 crosses on the element 32 being connected on the one end 71, when the other end 70 when crossing element and be fixed to the rear portion of central support 4, cross element 32 both sides of support frame 3 linked together.

Near the backrest rear side, have the headrest 8 at top and the waist support 9 of bottom respectively, the both is equipped with adjusting device along vertical axis.In more detail, headrest 8 comprises two arch support that suspend 80, in the bottom and vertical connection of the top of crossing element 33 that is connected backrest 3 support frame both sides of arch support 80.Said arch support element 80 by on vertical axis 81, insert can regulate guider connect the headrest 8.As can be seen, waist support 9 is fixed on the centre of the arcuate member 91 of two shapings by the guider of regulating along vertical axis 90, the arcuate member 91 of two shapings connects endways and reaches another side from the one side of support frame 3, and is connected with the bottom of support frame 3.

For the locking-non-locking function that realizes that seat face 2 and backrest 3 are synchronized with the movement, near above the forward edge place key 62 is set all at two handrails, one has three said keys 62 in the operation, it starts, and the height of controlling chair (seat face 2 and backrest 3) is respectively regulated and the swing of himself, key here is used for corresponding non-locked position for this reason, and a key is used for the position of corresponding locking.Or rather, the support frame of backrest 3 together rotates around relative fulcrum and low side 30 on non-locked position, and by jockey 31 it to be dragged to side 20 be the rear portion of seat face 2.In this case, to have the function that opposition swings backward be intelligible to spring 7.

Claims (6)

1, a kind of office chair structure that relies on the connecting mode that is synchronized with the movement of adjustable type seat and backrest, comprise castor formula movable pedestal, stretch out adjustable for height pillar from this base and support seat and the backrest that is hinged, headrest that said back rest supports can be regulated and waist support is characterized in that:

-seat face is connected in the front portion of its front end with corresponding central support, and central support is fixed on the top of adjustable strut along vertical axis;

The rear portion of-central support supports at least one that have seat height adjustment device and control backrest and chair swing with rotating shaft and locks-bottom of two handrail supporting struts of locking device not, and said pillar further is hinged to the end of back support frame in the center;

The framework of-backrest is hinged and link to each other with the rear portion at seat along the limit;

-between the support frame of central support and backrest, for a built-in compression spring of back and seats.

2, according to the office chair structure of the connecting mode that has motion of claim 1, it is characterized in that: central support comprises flat board, dull and stereotyped suspending and stretching to the front portion at seat of being provided with, in a pair of parallel arms that slightly is crooked shape each and relative terminal linking to each other, each arm all has the hinged pillar that is hinged on successively on the seat face.

3, according to claim 1 and 2 so that the office chair structure that the connecting mode of motion connects, it is characterized in that: central support is hinged in the bottom of pair of posts from the parallel arms opposite, each pillar wherein is all at the correspondingly configured arm of top braces; On the hinged place and the position between the builder arm of the relative pillar of said relatively central support, said pillar provides the hinged of back support frame bottom.

4, according to aforementioned claim so that the office chair structure that the connecting mode of motion connects it is characterized in that: the support frame of backrest is L shaped and fixes along the rear portion of seat face opposite side.

5, according to aforementioned claim so that the office chair structure that the connecting mode of motion connects, it is characterized in that: screw type compression spring is built between the support frame and central support of backrest, it is connected to lateral direction element at an end, lateral direction element is connected between two limits of support frame, and another end connects along the rear portion that laterally reaches of central support.

6, according to aforementioned claim so that the office chair structure that the connecting mode of motion connects it is characterized in that: near the rear side of backrest, have respectively:

-comprise the headrest of two mount supports elements, two mount supports elements link to each other with the bottom of headrest and vertical thereon the lateral direction element on the both sides that are connected back support frame, and said support component comprises the guider that is built in the adjustable headrest on its vertical axis;

-have the waist support of adjustable guider along vertical axis, be fixed on the centre position of two arch-shaped elements, the end of arch-shaped elements is meshed with support frame, one side it is from the inboard that extends to another side of support frame.

Images