CN103225732B - Band hydraulic bjuffer is without cam type reed winding tension spring type supporting frame - Google Patents

Abstract

The invention discloses a kind of band hydraulic bjuffer without cam type reed winding tension spring type supporting frame, relate to photo frame type display screen supporting frame.Comprise fixed frame, rotating shaft, leg, the winding sleeve be sleeved in rotating shaft, angle range limit structure, can reel thin reed, extension spring, changeover mechanism; It is characterized in that: described winding sleeve becomes synchronous axial system body with rotating shaft load, eliminate initial skidding cam sleeve, the convex-concave profile in corresponding cancellation axial end.And can hydraulic bjuffer be installed additional.This invention simplifies the structure of prior art, the defect that the winding sleeve high speed pay-out that the two concave moulding surface structures that prior art is existed cause produces impact and noise is eradicated, also introduce hydraulic bjuffer originally simultaneously, overcome another defect of prior art---the high speed rebounce that leg zero load can produce, so that affect the defect of life-span and the very large noise of generation, working life extends greatly, and operation feeling is better.

Description

Band hydraulic bjuffer is without cam type reed winding tension spring type supporting frame

Technical field

The present invention relates to a kind of liquid crystal display panel (containing integrated machine liquid crystal display panel, LCD monitors, or independent liquid crystal display panel, for simplicity, the each document of the present invention is all called for short display screen) with supporting frame, what be specifically related to is take extension spring as the photo frame type display screen supporting frame in equilibrant source.

Background technique

Display screen generally needs when using to lay support and adjustable visual angle by the supporting frame on it, therefore supporting frame is important conjunction and the matching parts of display screen interwoveness, rational support frame structure can provide a better more comfortable service condition to user, make the operation of display screen more ideally can meet the requirement of ergonomics, simultaneously minification to greatest extent, save desk-top space, quick detachable, be convenient to packaging and carrying etc.

Display screen supporting frame is except a large class supporting frame class of table top vertical support, and another large class display screen is directly tiltedly placed on table top to use, and namely adopts so-called photo frame type supporting way; Namely supporting frame is arranged on the display screen back side, its leg pivot axis level and parallel with display screen before display floater being arranged on the display screen back side.During display screen adjustment angle of inclination, leg lower edge then can be slided along on desktop, and jointly forms triangular support with computer lower edge (also can increase with spike in lower edge attaching); Leg has an initial support-position, and leg generally needs omnidistance angular turn to support, simultaneously when need not or packed and transported time leg can be retracted to around the shaft again screen the back of the body in reduce volume.Because display screen all has certain weight, also to add hand touch screen power, therefore the mechanism of supporting frame inside also wants to realize display screen and can balance at desktop each oblique angular position leg, resist making a concerted effort and stablize motionless, be i.e. not Automatic-dumping, lodging of the larger weight component of display device and touch screen power.

For realizing these functions above-mentioned, prior art has a kind of photo frame type supporting frame using extension spring as main equilibrant, see number of patent application---reed winding tension spring type supporting frame 201220337454.4, its main structure see its application documents and Fig. 1, its main contents be comprise fixed frame, rotating shaft, leg, in order to balance the extension spring etc. of the main weight component of display screen; The vertical middle standing pillar of an above-below direction is provided with in the middle of described fixed frame; Coaxially rotating shaft described in is respectively housed respectively between described fixed frame left and right housing and vertical middle standing pillar, described rotating shaft nestles up respectively be set with can the winding sleeve that rotates of circumference and the initial skidding cam sleeve that connects firmly of circumference, and both near one end axial end all along being provided with cam type surface that is corresponding, the reciprocal adaptation of convex-concave; The other end of described winding sleeve then with described fixed frame or connect firmly corner locating lining on described fixed frame its near this end being together equipped with corresponding, adaptive angle range limit structure; The thin reed one end that can reel is installed on described winding sleeve, the movable end (the described thin reed that reels can be more than a slice mutually paste the superimposed thus sheet that is combined into one use and be together packed on described winding sleeve its one end) of relatively described fixed frame in the extension spring two ends described in the other end then goes to connect through changeover mechanism.

Described vertical middle standing pillar is provided with in the horizontal direction the rotating shaft axis hole coaxial with fixed frame left and right side housing rotating shaft axis hole; Rotating axle bushing is provided with in described vertical middle standing pillar rotating shaft axis hole.Described angle range limit structure is fixed with corner locating lining in the rotating shaft axis hole on fixed frame left and right side housing, and described corner locating lining its with winding sleeve without cam end mutually by side be equipped with corresponding, adaptive, reciprocal, can mutually embed, the block that protrudes vertically or recessed notch (the circumferential lengths Ying Heng of described recessed corner locating notch be greater than suitable, convex enter the circumferential lengths of block; It is corresponding to the angular range of initial skidding corner that the winding sleeve of its circumferential lengths be greater than and required control minimum opens corner); Two cam type surfaces of described reciprocal adaptation are corresponding and adaptive with the described winding sleeve initial skidding crank degree of required control.For reducing wear, rotating shaft described in left and right two by the hole of the described rotating axle bushing in described rotating shaft axis hole on the hole of described corner locating rotating axle bushing and vertical middle standing pillar supported (the described rotating shaft axis hole of described vertical middle standing pillar on it or the described rotating axle bushing hole on it for fill two described in the common hole of rotating shaft).Through after described fixed frame housing, across the endoporus of the U-shaped leg two frame bars termination of described fixed frame left and right housing, suitable and circumference connects firmly with uncovered bag in described left and right two rotating shaft, its outer shaft part stretched out is respectively installed with multiple cam elastic compression pad, and in left and right, the outermost end of described rotating shaft is equipped with locking nut respectively.

Described changeover mechanism shares a bearing pin by one end and pinboard one end of anti-bias slider guide thus jointly forms after forming that left and right is swinging and being connected; The other end of described anti-bias slider guide is connected with the described thin reed upper end that reels, and the other end of described pinboard then connects the movable one end of described extension spring.

Described extension spring relatively not moved end first connect block one end with extension spring force adjustment and be connected (also directly can be connected with described fixed frame), then extension spring force adjustment screw is removed its screw on the shoulders portion stay gear outside all the other screw rod wore on fixed frame crossbeam described in display device set by vertical unthreaded hole after be screwed into described extension spring force adjustment and connect the block the other end.Described extension spring can multiplely be installed and used side by side.

But the maximum shortcoming of above-mentioned prior art is: due to winding sleeve and initial skidding cam sleeve near one end be all circumferentially with cam type surface that is corresponding, the reciprocal adaptation of convex-concave along axial end; when leg turns to several angle, rotating shaft drives initial skidding cam sleeve and concave on the winding sleeve be engaged with by this cam driven is rotated together, but when turning to several angle, turn that winding sleeve makes two impacting forces produced by the resilient pad in rotating shaft and the winding sleeve of band concaves that is meshed and initial skidding cam sleeve produce and be greater than this impacting force and relatively trackslip until mutually depart from engagement because pulling spring force is pulled at by the thin reed that can reel, also namely compress by resilient pad in rotating shaft between the two and the impacting force of generation is not enough to the concavo-convex continuation engagement that maintenance two is engaged, the cylinder winding sleeve concave extruded mutually with initial skidding cam concave will be forced spin friction and skid off, and once skid off winding sleeve because of no longer engagement and make load disappear immediately and rotate rapidly, thus the initial position limit structure on it can produce the fierce impact to the block that the corner locating lining be fixedly mounted with in fixed frame axis hole protrudes vertically or recessed notch, affect the life-span and send stronger impact noise, impact uses.

In addition, if when leg surprisingly artificially allows leg and desktop disengage suddenly when angle of inclination is larger (as the unexpected overturning of display screen etc.), because now extension spring 14 has been in comparatively great tension, now lose suddenly the resistivity of display screen gravity and discharge rapidly, spring force oppositely can drive leg high speed rotary, produces and impacts, likely hurt sb.'s feelings or damage display screen, simultaneously also produce very large noise, therefore, fail to the desirable operating environment of operator one.

Summary of the invention

In order to overcome the defect that prior art exists, the present invention on prior art basis by winding sleeve is directly become synchronous axial system body to rotating shaft load, cancel initial skidding cam sleeve, corresponding cancellation this to corrective measures such as the concave-convex wheel structures be meshed, introduce in related domain first simultaneously and have employed hydraulic bjuffer, thus provide a kind of there is no an above-mentioned defect band hydraulic bjuffer, without cam type reed winding tension spring type supporting frame, for user provides a more desirable use operating environment.

The present invention adopts following technical proposals to realize:

Band hydraulic bjuffer, without cam type reed winding tension spring type supporting frame, comprises fixed frame, horizontal pivot is located at rotating shaft in fixed frame pivoting hole, the leg with rotating shaft synchronous axial system, the winding sleeve be sleeved in rotating shaft, for setting the angle range limit structure of leg initial position angle, one end is connected and is wound on reel thin reed, extension spring, the changeover mechanism on winding sleeve; It is characterized in that: described winding sleeve becomes synchronous axial system body with rotating shaft load, cancel initial skidding cam sleeve, described winding sleeve is corresponding cancellation and the convex-concave profile in the place axial end of the corresponding adaptation of described initial skidding cam sleeve also.

Further:

Axis hole and the described rotating shaft section of described winding sleeve adopt suitable non-circular shape load, or described winding sleeve with described rotating shaft is arranged both suitable, radial corresponding pin hole plug the pin of adaptation or rivet rivet and carry out load in pin hole, or adaptive key or spline and keyway or spline load are set on described winding sleeve and described rotating shaft, realize synchronous unitary rotation to make winding sleeve with the load of rotating shaft.

In described rotating shaft be arranged in be set with described winding sleeve two ends do not recline described fixed frame one end outside described rotating shaft position is provided with radial peg nail and penetrates and be fixedly mounted with adaptive pin or rivet or insert screw and lock with nut, or circlip annular groove is set on the ring side face of described position and suitable circlip is housed, or screw thread is set on described surface of position and locks adaptive nut, or tapped hole is set on described position and adaptive screw locks, or it is suitable both arranging on described winding sleeve and described rotating shaft, radial corresponding pin hole also plugs the pin or riveted joint rivet or screw that are fixedly mounted with adaptation in pin hole, to make described winding sleeve in described rotating shaft by axial limiting, stop.

Described also comprises at least one hydraulic bjuffer, it piston rod comprising a frame and axially stretch out described frame without cam type reed winding tension spring type supporting frame; Conflict with described fixed support or be connected in one end of described frame and described piston rod alternatively person, both mutually conflict with described changeover mechanism or be connected in the one end through selecting a remaining person; Formed and reduce its striking velocity when described changeover mechanism is pulled during return by described extension spring high speed.

Described also comprises a changeover mechanism cross connecting plate without cam type reed winding tension spring type supporting frame, about it, two positions are connected mutually with the anti-bias slider guide in left and right two described changeover mechanisms respectively, then conflict with one end of described frame and described piston rod alternatively person or be connected in intermediate portion, both conflict with described fixed support or be connected in the one end through selecting a remaining person.

Described also comprises an adapter coupling without cam type reed winding tension spring type supporting frame, and described piston rod also passes through the affixed described changeover mechanism cross connecting plate of described adapter coupling away from the affixed described adapter coupling in one end of described frame.

Be provided with the chamber of opening again of frame described in an accommodation hydraulic bjuffer in described fixed support, described frame is set up within it.

Described frame has a micro-boss for described fixed support of conflicting away from one end axial end central authorities of described piston rod, to improve described hydraulic bjuffer force-bearing situation.

The recline axial end of described pin of described winding sleeve is provided with a depressed part and contains described pin and make it not drop or make described rotating shaft and described winding sleeve unitary rotation simultaneously.

Accompanying drawing explanation

Fig. 1 is the structural representation of the immediate prior art with the present invention.

Fig. 2 is structural representation of the present invention.

1. fixed frames in figure, 2. rotating shaft, 3 winding sleeves, 4. can reel thin reed, 5. leg, 6. vertical middle standing pillar, 7. rotating shaft axis hole, 8. rotating axle bushing, 9. initial skidding cam sleeve 10. corner locating lining, 11. anti-bias slider guides, 12. pinboards, 13. bearing pins, 14. extension springs, 15. extension spring force adjustment connect block, 16. extension spring force adjustment screws, 17. vertical unthreaded holes, 18. plastics anti-attrition guide sleeves, 21. mounting holes, 22. elongated roller bearings, 23. roll sleeves, 24. elastic compression pads, 25. locking nuts, 26. display screens, 27 hydraulic bjuffers, 28 framies, 29 piston rods, 30 changeover mechanism cross connecting plates, 31 adapter couplings, 32 opening chambers, 33 micro-boss, changeover mechanism 34.

Embodiment

The technological means realized to make the present invention, creation characteristic, reaching object and effect and be easy to understand and understand, below in conjunction with Fig. 2 and concrete preferred embodiment, the invention will be further described.

See Fig. 2, this preferred embodiment: band hydraulic bjuffer is without cam type reed winding tension spring type supporting frame.It is formed the improvement of small part structure on aforementioned prior art architecture basics, for ease of understanding, please simultaneously see Fig. 1 easily to see the similarities and differences with prior art structure.

Its structure is: connect firmly at display screen 26 back side by the fixed frame 1 of the frame-like structure of light metal casting shaping (preferably adopting aluminum alloy or magnesium alloy die casting) with screw etc.; Establish one (also can establish two in closer distance in the middle of fixed frame 1, to gain in strength, this example establishes one) the vertical middle standing pillar 6 of above-below direction, be provided with in the horizontal direction from fixed frame about 1 housing at vertical middle standing pillar 6, coaxial rotating shaft axis hole 7(diameter, shape can be different); For reducing friction and life-saving, being provided with rotating axle bushing 8 in vertical middle standing pillar 6 rotating shaft axis hole 7, being provided with corner locating lining 10(in fixed frame about 1 housing rotating shaft axis hole 7 and can playing the effect of rotating shaft axis hole, take into account simultaneously and realize angle range limit structure); The corner locating lining 10 that need be packed on fixed support 1 is preferably cast as one as inserter and fixed frame 1 in the lump with both rotating axle bushings 8, and known mechanical structure certainly also can be adopted to fix.

Rotating shaft 2 uses two (obviously, correspondingly how a set of follow-up a series of of being attached thereto are also correspondingly) in this example; In rotating axle bushing 8 hole respectively in level, the corner locating bush hole 10 being symmetrically hubbed on correspondence on fixed frame about 1 housing and vertical middle standing pillar 6, wherein because the vertical middle standing pillar 6 of this example is one, therefore rotating axle bushing 8 hole on it is the common hole of two rotating shafts 2.

Two rotating shafts 2 are set with winding sleeve 3 respectively, note special with the technology of showing unlike: winding sleeve 3 becomes synchronous axial system body with rotating shaft 2 load, for this reason, the numerous known technologies being mechanically connected into synchronous axial system body can be adopted, such as: axis hole and described rotating shaft 2 section of described winding sleeve 3 adopt suitable non-circular shape to be set with load, or it is suitable both arranging on described winding sleeve 3 with described rotating shaft 2, radial corresponding pin hole also plugs adaptive pin or rivet carrys out load in pin hole, or on described winding sleeve 3 with described rotating shaft 2, adaptive key (or spline) and keyway (or spline) load are set, etc., to make winding sleeve 3 realize synchronous unitary rotation with the load of both rotating shafts 2, this example adopts the first adaptive non-circular shape mode to realize.

Cancel the initial skidding cam sleeve 9(of prior art employing see Fig. 1), also winding sleeve 3 described in corresponding cancellation prior art and the convex-concave profile (i.e. a pair concave) in the place axial end of the corresponding adaptation of described initial skidding cam sleeve 9.Winding sleeve 3 be jointly provided with corner locating lining 10 in the axial end of one end of fixed frame about 1 housing mutually adaptive angle range limit structure (though with prior art structural similarity, be mainly used in limiting the initial support angle of leg 5 and can optionally limiting maximum rotating field angle or not limit.), this structure is very simple, the spacing technology of known angle range that multiple related domain can be adopted usually to use, as: the structures such as both are arranged respectively to corresponding, reciprocal adaptation, can mutually embed, the notch of the block that protrudes vertically or depression; For another example: both form the concavo-convex (completely different from the object that aforesaid concave is reached of correspondence respectively with the form of pad or wheel on mutual surface of contact, here just for determining leg 5 initial position), for the sake of simplicity, this example selects winding sleeve 2 axial end to be arranged to notch, and corresponding corner locating lining 10 corresponding position is arranged to axial projection block.In addition, for improving technology capability, the winding sleeve 3 described in this example and/or corner locating lining 10 and/or rotating axle bushing 8 adopt ferrous based powder metallurgical technique direct forming.

Left and right two rotating shaft 2 continues across by the endoporus of U-shaped open-mouth bag in U-shaped leg 5 across left and right leg 5 liang of frame bars terminations of fixed frame about 1 housing through after fixed frame about 1 housing, and adopt non-circular suit adaptation to form synchronous axial system body with this left and right endoporus, rotating shaft 2 continues outwardly directed left and right shaft part and is set with multiple elastic compression pad 24(by the known technology that related domain is conventional and also can comprises the multiple pads such as anti-attrition flat gasket) and be contained in the locking nut 25 of rotating shaft 2 outermost end, by each pad 24 on the mutual clamping shaft of axial elasticity 2, winding sleeve 3, corner locating lining 10 and in addition leg 5 described later, carry out secondary spring power to balance screen with the frictional force producing suitable size weigh and make support more stable, but for realizing this object, winding sleeve 3 need, by axial limiting in rotating shaft 2, at least make it not move to the direction away from corner locating lining 10 by phase countershaft 2, thus axially will pull winding sleeve 3 when nut 25 is locked, make winding sleeve 3, each pad 24, corner locating lining 10, also have leg 5 described later to be pressed tightly against each other, produce axial elasticity impacting force, and then required for producing, that a certain size frictional force makes leg support is more stable, also reduces the load of extension spring 14 simultaneously.For meeting the axial limiting requirement of this winding sleeve 3 in rotating shaft 2, various known axial limiting technology can be adopted, as: as described in rotating shaft 2 on be arranged in winding sleeve 3 two ends that are set with do not recline as described in fixed frame 1(refer to corner locating lining 10 place) one end outside as described on rotating shaft 2 position, radial peg nail is set and penetrates and be fixedly mounted with adaptive pin (or rivet) (or insert screw and lock with nut), or circlip annular groove is set on the ring side face of described position and suitable circlip is housed, collar etc., or screw thread is set on described surface of position and locks adaptive nut, or tapped hole is set on described position and adaptive screw locks, or it is suitable both arranging on described winding sleeve 3 with described rotating shaft 2, radial corresponding pin hole plugging in pin hole is fixedly mounted with adaptive pin (or rivet or screw), etc., this example for the sake of simplicity, adopt the first in rotating shaft 2, establish pin hole distribution mode of following closely to realize needed for described rotating shaft 2 one of described winding sleeve 3 axially by axial limiting, stop.Simultaneously, do not drop from pin hole for making described pin, except can adopt gluing also can recline at described winding sleeve 3 described pin axial end on be provided with the depressed part of the described pin of a containing, as long as allow pin whole (comprising two ends) be in a little in this depression, pin can not drop being blocked by the ring week of depressed part due to two ends; This routine described depressed part is that a diameter is greater than pin length, very shallow heavy circular hole, certainly, also can be arranged on described depressed part basis, axially darker (namely in draw-in groove shape) containing in short channel-shaped local dent is continued except the pin of two ends at the diameter range being slightly less than pin length, realize so incidentally described rotating shaft 2 is rotated (namely saving the aforesaid linkage structure for realizing synchronous axial system body) with described winding sleeve 3 integrated synchronous, pin can not be deviate to drop again simultaneously.

Thin reed 4 one end that can reel is packed on winding sleeve 3, being fixedly mounted with can by known multiple method, as pin (and/or rivet and/or screw) (and/or winding sleeve surface forms the protruding structure in hole on the thin reed 4 of adaptive winding) etc. is fixed on winding sleeve 3; This example have employed powder metallurgy formation because of winding sleeve 3, therefore adopts two protruding structures of holes on the thin reed 4 of winding sleeve 3 outer surface direct forming adaptation winding to connect firmly; For improving the life-span, the thin reed 4 that can reel should select that elasticity is good, the stalloy of the spring that can reel, can be used for making, and within the scope of the elasticity making it can be operated in material during bending deflection when being wound sleeve 3 and reeling as far as possible permission bending deflection; In addition for improving the life-span, when initial position, the thin reed 4 that can reel preferably is wound on last point of winding sleeve 3 in advance at the two length section places, fixed hole position that have of himself, be wrapped by make it operationally because continuation reels, also namely avoid self the position section of this stressed bad, weak (because of having two fixed holes) is coated on nothing on winding sleeve all the time and stretches working state, also namely can not be in the active section stretching the alternating bending reeled again; For improving the flexibility of thin reed 4 of can reeling further with life-saving, the thin reed 4 that can reel can be a slice or two panels and mutually paste the compound " a slice " being overlapped into one and forming above; This example adopts 3 and builds up.For ease of the connection of can reel thin reed 4 and extension spring 14, the other end of the thin reed 4 that can reel and upper end first by being connected with changeover mechanism 34 one end, and then are connected with the movable end of extension spring 14 by the other end of changeover mechanism 34.

Changeover mechanism 34 structure of this example adopts to be shared after a bearing pin 13 forms the connection that can swing with one end of the anti-bias slide block 11 of guiding by pinboard 12 one end and jointly forms, because both can laterally swing relatively around bearing pin 13, can greatly reduce because many reasons draws tendency partially to the thin reed 4 that can reel, to extend the life-span of the thin reed 4 that can reel, when particularly installing and using side by side the following multiple extension spring 14 of employing, effect can be more obvious; The other end of the anti-bias slider guide 11 in the changeover mechanism 34 after both being formed is connected with thin reed 4 upper end that can reel, connection can form the multiple techniques well known structures such as the projection in hole on the adaptive thin reed 4 that can reel with pin and/or rivet and/or screw and/or anti-bias slider guide 11 surface and connect, this example four screws connect, and pinboard 12 the other end then correspondingly connects movable one end of extension spring 14 (for the sake of simplicity this example direct by extension spring 14 termination steel wire hook in pinboard 12 corresponding aperture).

The relative not moved end of extension spring 14 directly can be connected with fixed frame 1 for the sake of simplicity, namely direct by extension spring 14 steel wire hook in its corresponding aperture of fixed frame 1, but this adjustment directly linking structure and be unfavorable for extension spring 14 initial tensile force, therefore this example do not adopt this structure but adopt by extension spring 14 relatively not moved end first connect block 15 one end with extension spring force adjustment and be connected (for the sake of simplicity, directly extension spring 14 termination steel wire can be linked in its corresponding aperture), then extension spring force adjustment screw 16 being removed its screw stays gear upper outside at fixed frame 1 crossbeam in portion on the shoulders, all the other screw rod were screwed into extension spring force adjustment after wearing vertical unthreaded hole 17 set on fixed frame 1 crossbeam and connect block 15 the other end, be screwed into when extension spring force adjustment connects the degree of depth of block 15 and the initial installation pulling force size of adjustable each extension spring 14 when regulating extension spring force adjustment screw 16.

For reducing spring diameter further, described extension spring 14 can multiplely be installed and used side by side, and each like this extension spring 14 diameter can be less, is beneficial to the realization of ultra-thin machine; This example employs two and installs side by side, and two rotating shafts 2 have shared four; For simple and for the purpose of not interfereing with each other, each extension spring 14 two ends directly link in each self-corresponding hole of the part that is connected up and down all side by side separately, notice that each cluster spring pulling force should be identical as far as possible, even, otherwise more easily form partially drawing the thin reed 4 that can reel than single one extension spring 14; Regulate extension spring force adjustment screw 16 the to be screwed into degree of depth that extension spring force adjustment connects block 15 can be finely tuned and initially be installed pulling force size, notices that total pulling force sum of each extension spring 14 should be able to meet balance, resist the main by weight component needs of display screen 26.

For reducing wear and surface friction drag, described anti-bias slider guide 11 can be fixed with plastics anti-attrition guide sleeve 18, suitable with the chute of the guiding on fixed support 1 by plastics anti-attrition guide sleeve 18 when moving up and down; As for cover structure shape and be fixedly mounted with simple, the surface that its left and right sides of main attention contacts with fixed support 1 upper hopper chute be only forces anti-bias with working surface that is slide-and-guide, available known structure.The material polyoxymethylene of plastics anti-attrition guide sleeve 18 or nylon etc. have plastics that certain self lubricity, intensity hardness are relatively high as well.

This routine leg 5 overall structure shape makes U-shaped (obviously also can adopt other analogous shape); Position with holes, two frame bars terminations of open state that leg 5 takes the shape of the letter U occupy fixed frame about 1 outer side frame external position respectively, and (obvious leg 5 liang of frame bars terminations also can change into and occupy other position in rotating shaft 2 respectively, but this example does not adopt), and adopt adaptive non-circular shape to be set with to coordinate with rotating shaft 2 shaft part stretched out respectively outside fixed frame about 1 housing and form synchronous axial system body.Mounting hole 21, two mounting hole 21 is respectively provided with built with elongated roller bearing 22 near the left and right horizontal direction, crossbeam place of the supporting tables such as desktop bottom leg 5; On elongated roller bearing 22 can coated or suit roll sleeve 23; This example suit roll sleeve 23, material is rubber or plastics; The location of elongated roller bearing 22 after two mounting holes 21 are installed adopts the known technology structures such as circlip.

This routine leg 5 can increase angle of inclination and upwards overturn until leg 5 and fixed frame 1 are in same plane, the simple structure that this position can establish a corresponding leg 5 folding and unfolding groove spacing by display screen 26 back side.

During use, the display screen 26 erect tiltedly is put, when pull the leg 5 at the back side relatively fixed frame 1 start to increase angle of inclination (roll sleeve 23 correspondingly on the elongated roller bearing 22 of leg 5 below it contacts and rolls along desktop or slide) from initial spacing tilt angle, also i.e. leg 5 around the shaft 2 and turn to corresponding equal angular with rotating shaft 2 integrated synchronous, the rotation of rotating shaft 2 then drives and becomes with its load the winding sleeve 3 of synchronous axial system body together to rotate identical gyration, a corresponding segment length and the reel thin reed 4 of related winding sleeve 3 on it reels, and then by this reed pulled straight changeover mechanism 34, and then movable one end of pulled straight extension spring 14 thus pass to the very large counteract display screen 26 of leg 5 and to conduct oneself with dignity the spring elongation counter-force of component.Make leg 5 balanced support can live display screen 26 at an arbitrary position.

This wherein, the guiding groove be fixed on support 1 is forced to align, rectify a deviation when doing vertical lines and moving by the changeover mechanism 34 be pulled, thus decreases associated part installation position and be equipped with the generation to unfavorable situations such as partially the drawing of the thin reed 4 that can reel, oblique pulls easily produced when deviation particularly installs multiple extension spring 14 side by side; As still having some partially to draw, both the anti-bias slider guide 11 in the left and right in changeover mechanism 34 and connecting plate 12 also the rotation about bearing pin 13 does a little can alleviate partially drawing reed, to extend the reed life-span.

Obviously, the present invention is because eliminating the concave-convex wheel structure of retracting spring power and eliminating initial skidding cam sleeve 9, simplify the structure of prior art, and causing because of two concave moulding surface structures that prior art is existed rely on its axial end concave-convex wheel structure to order about after winding sleeve 3 turns to several angle scope with the be fixed with one initial skidding cam sleeve 9 that rotates of rotating shaft, the concave leaned on mutually is axially forced to be separated, make now to be in that unresisted winding sleeve 3 is stretched that spring 14 drives and high speed rotary release and producing is impacted and the defect of noise is able to thorough elimination.

Even if but like this, as described in previous technique background, prior art also has a following problem: when leg 5 is at angle of inclination during larger support, if suddenly unexpected when artificially allowing leg 5 and desktop disengage (moving back and forth or display screen 26 overturning suddenly etc. as children play), because now extension spring 14 has been in comparatively great tension, now lose suddenly the resistivity of display screen 26 gravity and unloaded, spring force can oppositely drive leg 5 high speed rotary to discharge rapidly, produce and impact, likely hurt sb.'s feelings or damage display screen 26, also producing very large noise simultaneously, for this reason, also need further improvement, specifically at the in-built hydraulic bjuffer 27 of fixed support, it piston rod 29 comprising a frame 28 and axially stretch out described frame 28, conflict with described fixed support 1 or be connected in one end of described frame 28 and described piston rod 29 alternatively person, both mutually conflict with described changeover mechanism 34 or be connected in the one end through selecting a remaining person, be connected on changeover mechanism 34 for ease of conflicting, a changeover mechanism cross connecting plate 30 can be installed additional, about it two positions respectively with a left side, anti-bias slider guide 11 in right two described changeover mechanisms 34 is connected mutually, then conflict with one end of described frame 28 and described piston rod 29 alternatively person or be connected in intermediate portion, both conflict with described fixed support 1 or are connected in the one end through selecting a remaining person, for being more convenient for connecting, described piston rod 29 away from described frame 28 the affixed adapter coupling 31 in one end and conflict or be connected with the anti-bias slider guide 11 on changeover mechanism 34 by two positions about described adapter coupling 31 again changeover mechanism 34 cross connecting plate described in affixed described changeover mechanism 34 cross connecting plate 30(respectively), then conflict or be fixed on fixed support 1 in frame 28 termination, above-mentioned relevant connection all can adopt interconnection technique structure well known in the art.Be known technology as hydraulic bjuffer 27 in automatic field, market model specification of raising variety much can directly be chosen, and belong to general part, therefore concrete structure principle of its buffering has not just repeated here.By the standing part in supporting frame and at a high speed bounce-back part to conflict respectively (or being connected) hydraulic bjuffer 27, both making, speed of related movement is reduced greatly, avoids impact.

For ease of fixed hydraulic buffer 27, be provided with the opening chamber 32 of frame 28 described in an accommodation hydraulic bjuffer 27 in described fixed support, described frame 28 is set up within it, in case it deviates from fixed support 1 when changes such as complete machine inclined position.

Above-mentioned hydraulic bjuffer 27 frame 28 has a micro-boss 33(to give prominence to a little away from one end axial end central authorities of described piston rod 29) for described fixed support of being conflicted by this micro-boss, to improve described hydraulic bjuffer 27 force-bearing situation, making can as far as possible by hydraulic bjuffer near axis when cushioning the power that is subject to, in case oil impregnate possible during bias hydraulic buffer 27.

Obviously, this supporting frame, also leg 5 can be designed to upset is downwards received in display screen 26 back side, because upwards or downwards storage leg 5 is a kind of motion relatively, said structure only needs correspondence simply to adjust on a small quantity, as those skilled in the art, this is very simple, has not just repeated here

The embodiment of other locally variable:

Obvious above-mentioned preferred embodiment local a little change can obtain flexible structure.Because mostly being simple technique well known in the art, too obviously, simply, those skilled in the art very easily realize, therefore only simply introduce several structure here, and only mention the main points of relevant difference and do not repeated:

This example of angle range limit structure is the block of simple protrusion or recessed notch, the similar structure playing initial angle range position-limiting action is obviously a lot of also very simple, a lot of variant can be made by technology well known in the art, the pin of convex block is such as equivalent to one, the employing window shape notch etc. of another correspondence, its similar block and notch, as long as effect is quite;

As wear-resisting etc. in do not considered, certainly rotating axle bushing 8 or corner locating lining 10 also can not be filled in rotating shaft axis hole 7 on vertical middle standing pillar 6, fixed frame 1 left and right side housing, certainly, the initial corner locating structure (as block, notch arrangement) of alternative corner locating lining 10 need be set on the end face of fixed frame 1 aperture, then coordinate block, the notch arrangement of winding sleeve 3 side; Also namely the initial corner locating structure function of corner locating lining 10 also can arrange limit structure by fixed frame 1, then coordinates the block of winding sleeve 3 side, notch arrangement to realize and substitute.

But obviously, the gasket unit of the band convex-concave that related domain also can be adopted usually to use or convex-concave wheel realize the initial position fix (being commonly called as " crossing point ") of leg, and this is particularly suitable for the descending structure be received in display screen 26 back of leg 5;

Leg 5 is still U-shaped substantially, also can have other analogous shape, and its uncovered portion also can be placed on fixed frame 1 inside, and the position that each assembling set in certain rotating shaft 2 is laid adjusts accordingly;

Also can adopt a rotating shaft 2, then structure is substantially close with preference, and other part does corresponding additions and deletions and adjusts;

Obviously, adopt in more simple torsion spring class formation in photo frame type supporting frame, also install hydraulic bjuffer can overcome equally leg unloaded time high speed recoil defect.

The present invention is by simplifying the structure of prior art, the defect that the winding sleeve speed no-load and high release that the two concave moulding surface structures that prior art is existed cause produces impact and noise is eradicated, also introduce hydraulic bjuffer structure first originally in related domain simultaneously, the high speed impact that can produce when overcoming the zero load suddenly of prior art leg, affect the defect of life-span and the very large noise of generation, for user provides a better Environmental Conditions, more meet ergonomic demands, and structure is simpler, working life extends greatly, operation feeling is better.

More than show and describe basic principle of the present invention, major character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.

Claims (1)

1. be with hydraulic bjuffer without cam type reed winding tension spring type supporting frame, comprise fixed frame, horizontal pivot is located at rotating shaft in fixed frame pivoting hole, the leg with rotating shaft synchronous axial system, the winding sleeve be sleeved in rotating shaft, for setting the angle range limit structure of leg initial position angle, one end is connected and is wound on reel thin reed, extension spring, the changeover mechanism on winding sleeve, it is characterized in that: described winding sleeve becomes synchronous axial system body with rotating shaft load, cancel initial skidding cam sleeve, described winding sleeve is corresponding cancellation and the convex-concave profile in the place axial end of the corresponding adaptation of described initial skidding cam sleeve also, axis hole and the described rotating shaft section of described winding sleeve adopt suitable non-circular shape load, or adaptive spline and spline load are set on described winding sleeve and described rotating shaft, realize synchronous unitary rotation to make winding sleeve with the load of rotating shaft, in described rotating shaft be arranged in be set with described winding sleeve two ends do not recline described fixed frame one end outside described rotating shaft position is provided with radial peg nail and penetrates and be fixedly mounted with adaptive pin or rivet or insert screw and lock with nut, or circlip annular groove is set on the ring side face of described position and suitable circlip is housed, or screw thread is set on described surface of position and locks adaptive nut, or tapped hole is set on described position and adaptive screw locks, or it is suitable both arranging on described winding sleeve and described rotating shaft, radial corresponding pin hole also plugs the pin or riveted joint rivet or screw that are fixedly mounted with adaptation in pin hole, to make described winding sleeve in described rotating shaft by axial limiting, stop,

Also comprise at least one hydraulic bjuffer, it piston rod comprising a frame and axially stretch out described frame; Both mutually conflict with described changeover mechanism or are connected in the one end through selecting a remaining person; Formed and reduce its striking velocity when described changeover mechanism is pulled during return by described extension spring high speed;

Also comprise a changeover mechanism cross connecting plate, about it, two positions are connected mutually with the anti-bias slider guide in left and right two described changeover mechanisms respectively, then conflict with one end of described frame and described piston rod alternatively person or be connected in intermediate portion;

Also comprise an adapter coupling, described piston rod also passes through the affixed described changeover mechanism cross connecting plate of described adapter coupling away from the affixed described adapter coupling in one end of described frame;

Be provided with the opening chamber of frame described in an accommodation hydraulic bjuffer in described fixed frame, described frame is set up within it;

Described frame has a micro-boss for described fixed frame of conflicting away from one end axial end central authorities of described piston rod, to improve described hydraulic bjuffer force-bearing situation;

The recline axial end of described pin of described winding sleeve is provided with a depressed part and contains described pin and make it not drop or make described rotating shaft and described winding sleeve unitary rotation simultaneously.