CN201270990Y

CN201270990Y - seat return device

Info

Publication number: CN201270990Y
Application number: CNU2008200484334U
Authority: CN
Inventors: 哥洛克
Original assignee: Dongguan Meiti Leatherware Co ltd
Current assignee: Dongguan Meiti Leatherware Co ltd
Priority date: 2008-05-28
Filing date: 2008-05-28
Publication date: 2009-07-15
Anticipated expiration: 2018-05-28

Abstract

The utility model relates to a return means of seat, especially return means of bar high-foot bench, the mid portion that contains a main cylinder is the part that supports the seat part, the base part at the mid portion withstands slope and resilience by return means, wherein the base part contains a fixed axle, the hinge point is located epaxial end and is close to the seat part between base part and mid portion, with the scope of restriction seat part pendulum motion, provide an elastic material between axle and upper end part, this elastic material not only is settled between the lateral wall but also is settled between the antetheca. Therefore, the swing amplitude will not be too large, and the user can sit safely and stably.

Description

The return mechanism of seat

Technical field

The utility model relates to the return mechanism of a seat, and is especially relevant with the return mechanism of barstool.

Background technology

Barstool is well known seat substantially.Yet its shortcoming is above the people is sitting in, and almost can't rotate.The sitting person at very long night, the muscle at back will be felt tired, and the person's that causes the seat sitting posture is bad.Be sitting in the people of office most of all day, similarly become the main cause that muscle of back power is degenerated.The people that these people, especially those muscle of back power have weakened, the time is sitting on the actionless barstool if also spend the whole night, can cause sitting posture bad usually, and therefore produces backache.One continuation, standard ground increase the sitting posture of loading to interverbebral disc, will cause sanguimotor having some setbacks, and its consequence may cause the injury of nonvolatil back.Another adverse factors is, the both legs that are sitting in barstool are unsettled being tilted to down, and therefore, most seat persons has the tendency that forms the back of a bow.If it is uncomfortable to discover this sitting posture, the client in bar can support self on the cross bar of barstool, and this causes the one-sided over load of interverbebral disc again.

WO-A-96 24 273 patent No.s show the return mechanism of a seat, especially the return mechanism of barstool, comprise a main cylinder mid portion, it is the part of supporting chair part, the base of this mid portion supports and resilience by return mechanism, wherein the sleeve pipe that forms by an elastomeric material between base portion and the mid portion directly links, and sleeve pipe not only is placed between the sidewall but also is placed between the antetheca.

Because this fact, mid portion are directly kept on base and resilience, the seat person can rock back and forth again and again slightly.Therefore, muscle of back is similarly kept slight moving all the time, and interverbebral disc can be supplied blood at any time.

One has elastic force pars intermedia branch to cause the vibration of barstool, even the minimum action of its longitudinal axis, so muscle of back can over and over again move, in addition, interverbebral disc is without any the impression of dead load.

The utility model content

Main purpose of the present utility model is in order further to improve the existing defective of prior art, a kind of return mechanism of seat to be provided.

For realizing above-mentioned purpose, the utility model is taked following technical scheme:

A kind of return mechanism of seat, especially the return mechanism of barstool, comprising a main cylindrical mid portion is the part of supporting chair part, base portion at mid portion supports and resilience by return mechanism, wherein base portion comprises a fixed axis, pin joint is positioned at the axle upper end and near the seat part, divides the scope of pendular movement to limit seat portion between base portion and mid portion, provides a tool flexible material between axle and upper part.This elastomeric material not only is placed between the sidewall but also is placed between the antetheca.

Above-mentioned return mechanism provides rubber-metal swing connector between mid portion and base portion.

The screen resilience of above-mentioned return mechanism is adjustable.

Above-mentioned mid portion is to be located on the return mechanism via the spline linkage frame.

The upper part of above-mentioned return mechanism main body tubulose, this upper end links for spline and base portion is used, and is fixed on the support arm of base portion.

Above-mentioned pedestal is located on the base section, and the bottom side of axle comprises the inside of base section and the top of axle, and a similar cup is around the axle upper part.

The upper part, axle and base section all link mutually with screw rod, and the effect of return mechanism primary stress is by the co-operating of adjusting nut and screw rod.

Between screw rod head end and the upper part, additional configuration one elastic parts.

The end of return mechanism provides one to strengthen the CONTACT WITH FRICTION device, makes it can touch the floor.

By this, the utility model comprises a fixed axis by base portion, and the hinge point between base portion and mid portion, this hinge point is positioned at the upper end of fixed axis, guarantee that by fixed axis the hinge member chair surface that can not disseat is too far away, therefore, the action of pendulum is limited to an effective scope.

In addition, it is useful settling a pin circle from the floor to the axle of preset distance.Pin circle is locked is fixed on the axle for this, so be actually fixing.Therefore the seat person can place pin on the pin circle, although its buttocks and swing above the waist, owing to pin has been placed on the pin circle, so be able to be seated safe and sedately.The pin circle has the vertical advantage of adjusting on axle, and the seat person can adjust it according to the configuration of its best.

The preferred embodiment of one variant has been that the resilience of mid portion is ready, comprises a center pole and a spring structure, and center pole and spring structure link the rheological force that is series at the load seat.

Allowing this two-part series connection link becomes possibility, and the design of center pole is not having mounting spring to weaken under the function of longitudinal axis, needs vertically to adjust.

This is the favourable part of variant structure specific embodiment, and another favourable part is a center pole and spring structure is placed in coaxially, and forms a guide bearing between center pole and the spring structure.The arranged in co-axial alignment of centre strut and spring structure makes it to realize that series connection links center pole and spring structure in the arrangement of a relative compact.This is very important, because-as mentioned above-the shear points chair surface that can not disseat is too far away, therefore just allows the arrangement of center pole and spring structure be close to mutually simply, will cause the shear points position too far away from base portion.

The favourable part of spring structure is to have dynamically and the static spring frame of seat, is lived between spring by embedding, and this is relatively simply constructed, and makes it might use a suitable standard spring.

The favourable part of center pole is to be configured to the spring strut of an Adjustable Range, and for example, for instance, an air spring has at least a vertical guide rail and guide bearing to cooperatively interact.

The favourable part of guide bearing is to comprise the split bearing of a perpendicular separation, and ball or roller are intended for the optimal components of bearing.

In a special preferred embodiment, bearing assembly be subjected to extruding spring extruding and near guide rail.When bearing assembly does not have the spring-loaded time spent of doing, swing and error that oscillation action produces are very noticeable during this, and the dynamic sitting posture of activity is produced very large devastating effect.

It is favourable that each bearing on guide rail is installed at least two kinds of bearing assemblies.

The favourable part of the bearing assembly of present case is the device of energy rigid bearing assembly, and the device extrusion bearing assembly of bearing assembly is to guide rail; Or via the compression spring; Or via strain zone or via an elasticity protrusion.Compression spring or strain zone or protrusion extrusion bearing assembly are centripetal type radial.

Its favourable part of guide rail is to be designed to a tubulose, and its pipe front end is connected to the tail end of spring strut and the dynamic end that its rear end is connected to the spring frame of seat.

In addition, settling a sliding bearing axle sleeve is favourable between guide rail pipe and spring strut, and its preferable design is to be used as an air spring.About the continuous oscillation swing during a dynamic moving of the longitudinal axis of mid portion, mainly be that its spring structure is the extremely low air spring of an extent of rebound, this is the result between the sliding bearing axle sleeve is mainly used in vertical the adjustment period.

The best arrangement of guide bearing is on the main body of support foot, and wherein Bearing fittings is spring loaded and supports, and the displacement radial.About the longitudinal axis of mid portion, its scale error is remedied by spring-loaded bearing assembly, to produce unanimity, fault-free and almost noiseless vibration.

The main body of support foot preferably is located on the axle of base portion via a spline linkage frame.

The spacing that can adjust between the dynamic and static spring frame of seat is favourable.For this purpose, a rotatable union nut becomes the device of support foot main body upper support spring, and is used to impose the pretension of spring.The pretension of spring makes that rocking type pad stool can be according to the human body weight adjustment, and consequently, when someone sat thereon, seat surface can not sink, just can away from or only feel a little unhappiness.The mechanism that forms pretension via rotatable articulation on the support foot main body is favourable, and through nut thus, and by this nut of rotation, spring can be subjected to pretension or loosen.

The favourable part of return mechanism is to design rubber-metal swing connector between mid portion and base portion.And can see through this screen resilience of wheel adjustment on the other hand.

Description of drawings

Fig. 1 shows the side view and the half-sectional view thereof of rocking type pad stool;

Fig. 2 shows the profile of Fig. 1 mid portion end, is a zoomed-in view;

Fig. 3 shows that mid portion has the zone of guide bearing;

Fig. 4 a shows the cross section by mid portion guide bearing zone;

Fig. 4 b shows the more detailed zoomed-in view of Fig. 4 a;

Fig. 4 c shows the view of the different specific embodiments of Fig. 4 b;

Fig. 5 shows the axle and the oblique view of pin circle;

Fig. 6 shows the cross section of a variant axle.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is further described.

Fig. 1 shows the side view and the half-sectional view thereof of rocking type pad stool, comprises a seat part 1, one mid portion 3 and a base portion 2.Mid portion 3 has center pole 4 and spring structure 5, and supports the end of the base portion 2 of inclination and resilience.Center pole 4 is configured to a vertical adjustable spring strut 10, is generally an air spring.Seat part 1 links fixing spring pillar 10 via a plug type joint 22, and rotates the longitudinal axis of this spring strut by the bearing 23 that is positioned at spring strut 10 ends.In order to adjust the upright position of seat surface 1, a control lever 24 is placed in the bottom side, when actuating, acts on spring strut with the method, can vertically adjust with known method subsequently.In addition, center pole 4 still comprises a vertical guide rail 11, and this guide rail is designed to tubular ring and is around in around the spring strut 10, is linked to the end of spring strut 10 via bearing 23 rotations.

In order to reach the movable dynamically demand of sitting posture behavior, spring structure 5 needs the rheological force of smooth and easy binding series connection center pole 4.

One reverse device, the generation of its rheological force might be passed through center pole more earlier via spring structure equally.

Spring structure 5 comprises the static spring frame of seat 8, one springs 9 and a dynamic spring frame of seat 7.Dynamically the spring frame of seat 7 is fixedly linked on the upper end of guide rail 11.For the relative motion of centre strut 4 and spring structure 5, a guide bearing 6 is formed between spring structure 5 and the guide rail 11.The specific embodiment explanation of Shu imitation, guide bearing 6 comprises two bearings 12, maintains the fixing part in support foot main body 15 upper ends.Support foot main body 15 is formed at the bottom of center pole 4, and is set up in the structure of base portion 2 via spline binding 16.In this bottom zone, support foot main body 15 has an external screw thread and screws on union nut 17, becomes the bracing or strutting arrangement of spring 9 simultaneously.Union nut 17 can impose pretension to spring 9, and therefore, when the seat carrying person's that will be matched to the seat weight, seat surface 1 can sedimentation one segment distance.

Base portion 2 at mid portion 3 supports and resilience by return mechanism 21, wherein base portion 2 comprises a fixed axis 40, hinge point is positioned at axle 40 upper ends and close seat part 1 between base portion 2 and mid portion 3, with the scope of restriction seat part 1 pendular movement; Mid portion 3 links 16 via spline and is set up on the return mechanism 21 of base portion 2.Return mechanism 21 is configured to a rubber-metal swing connector, and comprising a main body is the upper part 25 of tubulose, and the spline of this upper end links 16 and one base section 27 and is fixed on the support arm 31 of base portion.Axle 40 is set up on the base section 27, and the bottom side of axle 40 comprises the inside of base section 27 and the similar cup upper part 25 around its upside.The flexible material 26 of one tool is provided on the axle 40 between side and the upper part 25.This elastomeric material not only is placed in the proparea but also is placed between the sidewall.Upper part 25, axle 40 and base section 27 interlink via a screw rod 29, and wherein the pretension of return mechanism 21 is by the co-operating of adjustable nut 28 with screw rod 29, therefore can adjust its screen resilience.Fig. 1 shows the explanation of a variant specific embodiment, and between screw rod 29 head ends and upper part 25, additional configuration one elastic parts 30, this elastic parts make the work behavior of return mechanism 21 present comparatively mitigation and unobstructed mode.

One guide ring 50 is fixed in the cylinder outside of axle 40 via the collar 52.The collar 52 has a screwed hole, and a related adjustment screw 53, can see through pin circle 50 and come lock shaft 40.Unclamp and adjust screw 53, can make pin circle 50 in the zone of axle 40, do vertical adjustment.

Base portion 2 is designed to the configuration of an intimate endless loop usually, and promptly return mechanism 21, and therefore, mid portion and seat portion branch are fixed in the center via support arm 31.Do the time spent when seat is subjected to carrying, support arm 31 can strains, thus rocking type pad stool via the extruding of the enhancings CONTACT WITH FRICTION device 33 of return mechanism 21 ends close ground.

Roller that rocking type pad stool is settled in annular base part 2 or ball 34, when seat was carried, base portion 2 produced deflection.According to the DIN standard, also might use " roller or ball " to lock the state of its ejection, when seat was subjected to slight carrying, rocking type pad stool was allowed the generation of displacement, when the load full load, base portion 2 can produce deflection.

Fig. 2 shows the end portion of mid portion 3 and the zoomed-in view that Fig. 1 shows rocking type pad stool return mechanism 21.Pin circle 50 is undeclared in this legend.The longitudinal axis of the relevant mid portion 3 of present case during the dynamic oscillation of activity, the relative motion that produces between guide rail 11 and the spring structure 5.This relative motion may be to mention that above the guide bearing 6 between guide rail 11 and spring structure 5 causes.Following legend will be done more fully this guide bearing 6 and explain.In the state that spring ejects, the path of spring 9 is subject to the arresting stop 35 of vertical guide rail 11 ends.This arresting stop 35 is passed on support foot main body 15.For the device of design path restriction, noiseless when it is made progress, a rubber ring 36 is linked between the main body 15 and arresting stop 35 of support foot.In order to limit its down landing, a resilient arresting stop 32 be provided in screw rod 29 head ends above.

Fig. 3 shows the profile of mid portion, and guide bearing 6 wherein has been installed.In Shu the explanation of imitating specific embodiment, guide bearing 6 comprise that two bearings 12 are positioned on the support foot main body 15 and with guide rail 11 co-operatings.Each face of bearing 12, have respectively 4 bearing assemblies 13 be distributed in guide rail 11 around, these bearing assemblies 13 may be configured to roller or ball.(also see Fig. 4 a).In the explanation of an imitation specific embodiment, bearing assembly 13 is designed to roller, and the accessory 18 of bearing assembly is contained at these roller axle two ends.The accessory 18 of these bearing assemblies to the certain main body 15 of scope to withstand support foot, therefore makes spring load on the direction of guide rail 11 in the mode of radial displacement.The specific embodiment explanation of the extrusion spring of two kinds of variants, the specific embodiment of first kind of variant is the support of the accessory 18 of bearing assembly via compression spring 19 on the pipe 37, be surrounded on support foot main body 15 around, thereby extrusion axis bearing assembly 13 is towards the direction of guide rail 11.The pipe 37 above support foot main body 15 top of tubular area be inserted into, and with 15 co-operatings of support foot main body with rigid bearing device 12.

In the specific embodiment of second imitation, the accessory 18 of each bearing assembly has an elasticity protrusion 20, its elastic deformation of mat, and the accessory 18 of the bearing assembly of similarly extruding, so bearing assembly 13 is near guide rail 11.

Fig. 4 a shows that one passes the profile of bearing arrangement 12, has been depicted in Fig. 3, and Fig. 4 b shows the amplification detailed view of Fig. 4 a, the specific embodiment explanation bearing assembly 13 of these variants via compression spring 19 extrusion springs, and be supported on the pipe 37.

Fig. 4 c recasting is the specific embodiment of different variants still as the same detail of Fig. 4 b.In Fig. 4 c, the accessory 18 of this bearing assembly has an elasticity protrusion 20, and this thing similarly is supported on the pipe 37, and therefore, extrusion bearing assembly 13 is near guide rail 11.

Fig. 5 shows that a pin circle 50 is set up in the oblique view on the axle 40.Axle 40 is mainly cylinder design, and its end has skew 41.Axle 40 its ends are installed on base section 37 in the mode of accurate driving fit, to such an extent as to cylindrical surface produces very level and smooth.(do not see legend) in the top, axle has the design of cup sample just like on 40 in order to hold elastomeric material 26 and upper part 25.

In the center, axle 40 has a passage 42 to be used for accepting screw rod 29, uses with pretension and adjustment as return device 21.

Axle 40 designs with the parts of aluminium die casting usually, so that the possibility of ribs 43 between exterior wall and the passage 40 additionally to be provided.

Pin circle 50 via the collar 52 be set up in axle 40 outsides around, be locked on axle via adjusting screw 53 thereafter.Pin circle 50 is connected to the collar 52 via support 51, and its diameter is about 500 centimetres usually.

Fig. 6 further shows the specific embodiment of the variant structure of axle 40, and this axle is by the solid material manufacturing, as aluminium casting parts.This similarly has passage 42 and the skew 41 of accepting screw rod 29.This can make various length.See it from its argument that can insert base section 27 rapidly, will be very easy to cooperate with the length of axle the height of barstool according to user's demand.Adjust the length of screw rod 29 to axle, all these is done.

The above, it only is the preferred embodiment of the utility model structure, be not that technical scope of the present utility model is imposed any restrictions, so every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any trickle modification, equivalent variations and modification that above embodiment did.

Claims

1. A return device for a seat, in particular a bar stool, characterized in that the middle part (3) comprising a main cylinder is the part supporting the seat part (1), in the middle part ( 3) The base part (2) supports the tilt and rebound by the return device (21), wherein the base part (2) includes a fixed shaft (40), between the base part (2) and the middle part (3) The hinge point is located at the upper end of the shaft (40) and close to the seat part (1) to limit the range of pendulum motion of the seat part (1), providing an elastic material (26) between the shaft (40) and the upper part (25) , the elastic material (26) is placed not only between the side walls but also between the front walls.

2. The return device of the seat according to claim 1, characterized in that the return device (21) provides a rubber metal swing connector between the middle part (3) and the base part (2).

3. The return device of the seat according to claim 1, characterized in that: the resilience of the return device (21) is adjustable.

4. The return device of the seat according to any one of claims 1 to 3, characterized in that the middle part (3) is erected on the return device (21) via a spline connection (16).

5. The return device of the seat according to claim 4, characterized in that: the upper end part (25) of the main body of the return device (21) is tubular, and the upper end is used for the spline connection (16) and the base part (27), It is fixed on the support arm (31) of the base part (2).

6. The return device of the seat according to claim 5, characterized in that: the shaft (40) is erected on the bottom part (27), and the bottom side of the shaft (40) includes the inside of the bottom part (27) and the shaft ( 40), like a cup around the shaft (40) upper end portion (25).

7. The return device of the seat according to claim 6, characterized in that: the upper part (25), the shaft (40) and the bottom part (27) are all connected with the screw rod (29), and the return device (21) initially The effect of the stress is through the cooperative operation of the adjusting nut (28) and the screw rod (29).

8 . The seat return device according to claim 7 , characterized in that: an additional elastic component ( 30 ) is arranged between the head end of the screw rod ( 29 ) and the upper end portion ( 25 ).

9. The return device of the seat according to claim 1, characterized in that: the end of the return device (21) is provided with an enhanced friction contact device (33) so that it can contact the floor.