CN209622368U - Double hinged fold mechanisms for mobile dance screen device - Google Patents

Abstract

The claimed double hinged fold mechanisms for mobile dance screen device of the utility model; including first mechanical arm, second mechanical arm, the first connecting joint, the first actuator and the second actuator; the first mechanical arm and the second mechanical arm are hinged with first connecting joint respectively; the flexible bar portion of first actuator and first connecting joint are hinged, and first actuator can drive first connecting joint to rotate relative to the first mechanical arm；The flexible bar portion of second actuator and first connecting joint are hinged, and second actuator can drive the second mechanical arm to rotate relative to first connecting joint.The utility model can realize the driving mutually folded to first mechanical arm and second mechanical arm with the first driving workpiece and the second driving workpiece, and then the visual effect realized and the folding for being respectively placed in display screen in first mechanical arm and second mechanical arm is driven, and then presented when raising display screen broadcasting pictures.

Description

Double hinged fold mechanisms for mobile dance screen device

Technical field

The utility model belongs to the relevant technical field of stage equipment, waves screen device for movement more particularly to a kind of Double hinged fold mechanisms.

Background technique

With the development and everybody the continuous pursuit to performance effect of scientific and technological level, display screen is usually set before the lights, And the picture of variation can be played with display screen to cooperate the performance for performing welcome guest on stage, multifarious visual effect is presented.

It however, the display screen on stage existing at present is generally arranged at the rear of stage, and is fixed aobvious Display screen, can not be mobile relative to stage, and structure is single, and using effect is dull, so that the picture that display screen is presented is two dimension Image quality, be not suitable for the performing art of some artistic effect complexity, and the effect finally presented is difficult to meet high-quality and drill The movable requirement of skill.

Currently, in existing stage equipment, and there is no one kind to carry out folding driving to display screen placed on it Support construction.

Utility model content

Based on this, it is necessary to for the technical problems in the prior art, provide a kind of for moving dance screen device Double hinged fold mechanisms.

Specifically, a kind of double hinged fold mechanisms for mobile dance screen device, including first mechanical arm, the second machinery Arm, the first connecting joint, the first actuator and the second actuator, the first mechanical arm and the second mechanical arm respectively with institute State that the first connecting joint is hinged, the flexible bar portion of first actuator and first connecting joint are hinged, and described first Actuator can drive first connecting joint to rotate relative to the first mechanical arm；The telescopic rod of second actuator Portion and first connecting joint are hinged, and second actuator can drive the second mechanical arm relative to described first Connecting joint rotation.

As a preferred embodiment of the present invention, it is mechanical to be arranged in described first in articulated manner for first actuator On arm, and first actuator can drive first connecting joint to rotate 90 ° relative to the first mechanical arm.

As a preferred embodiment of the present invention, electric cylinder, electric cylinder upper cylinder body portion is arranged in first actuator Tail end be hinged with the first mechanical arm.

As a preferred embodiment of the present invention, first actuator includes two electric cylinders, two electric cylinders It is arranged in the first mechanical arm side by side.

As a preferred embodiment of the present invention, it is mechanical to be arranged in described second in articulated manner for second actuator On arm, and second actuator can drive the second mechanical arm to rotate 90 ° relative to first connecting joint.

As a preferred embodiment of the present invention, second actuator is set as electric cylinder, the electric cylinder upper cylinder body Portion is limited in the second mechanical arm by limit frame, and the cylinder body of the electric cylinder is hinged with the limitting casing.

As a preferred embodiment of the present invention, second actuator includes two electric cylinders, two electric cylinders Separation is on the two opposite sides of the second mechanical arm.

As a preferred embodiment of the present invention, first connecting joint respectively with the first mechanical arm, described The trapezoidal shape in cross section for the part that two mechanical arms, first actuator and second actuator are hinged.

As a preferred embodiment of the present invention, it is hinged between the first mechanical arm and first connecting joint There are two hinged joint settings.

As a preferred embodiment of the present invention, it is hinged between the second mechanical arm and first connecting joint There are two hinged joint settings.

Due to the application of the above technical scheme, the utility model has the advantage that compared with prior art

Double-strand chain fold mechanism provided by the utility model for mobile dance screen device, is set by reasonable structure It sets, the rotation relative to first mechanical arm can be done with first driving the first connecting joint of artifact-driven, be driven with the second driving workpiece Dynamic second mechanical arm does the rotation relative to the first connecting joint, is realized with this and is mutually rolled over to first mechanical arm and second mechanical arm Folded driving can be realized and drive to the folding for being respectively placed in display screen in first mechanical arm and second mechanical arm, and then improves The visual effect presented when display screen broadcasting pictures.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of mobile dance screen device provided by one embodiment of the utility model.

Fig. 2 is the structural schematic diagram at another visual angle of mobile dance screen device in Fig. 1.

Fig. 3 is the main view at another visual angle of mobile dance screen device in Fig. 1, and wherein display screen fold mechanism is in rugosity State.

Fig. 4 is the main view at another visual angle of mobile dance screen device in Fig. 1, and wherein display screen fold mechanism is in the first exhibition Open state.

Fig. 5 is the main view at another visual angle of mobile dance screen device in Fig. 1, and wherein display screen fold mechanism is in the second exhibition Open state.

Fig. 6 is the main view at another visual angle of mobile dance screen device in Fig. 1, and wherein display screen fold mechanism is in third exhibition Open state.

Fig. 7 is the main view at another visual angle of mobile dance screen device in Fig. 1, and wherein display screen fold mechanism is in the 4th exhibition Open state.

Fig. 8 is the structural schematic diagram at another visual angle of the column supporting structural of mobile dance screen device in Fig. 1.

Fig. 9 is the structural schematic diagram at another visual angle of the double-strand chain fold mechanism of mobile dance screen device in Fig. 1.

Figure 10 is the structural schematic diagram of the mechanical arm of mobile dance screen device in Fig. 1.

Figure 11 is the structural schematic diagram of the mechanical arm of mobile dance screen device being located at the top in Fig. 1.

Wherein, 10, frame；20, tire；100, moving trolley；200, column；201, the first rotary drive motor；202, First driving gear；203, speed reducer；210, the first rotary drive mechanism；211, rotating part；212, pivoting support；220, it swings Driving mechanism；221, connecting support；300, display screen fold mechanism；301, first mechanical arm；302, second mechanical arm；303, One connecting joint；304, the first actuator；305, the second actuator；310, mechanical arm；311, the second rotary drive mechanism；312, Turnover driving mechanism；320, display screen；330, connecting joint；3011, erection support；3021, frame is limited；3111, the second rotation Turn driving motor；3112, the second driving gear；3113, rotate gear；3121, turn drive motor；3122, third sliding tooth Wheel；3123, turning gear；3124, turning-over support seat.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Unless otherwise defined, all technical and scientific terms used herein are led with the technology for belonging to the utility model The normally understood meaning of the technical staff in domain is identical.Terminology used in the description of the utility model herein only be The purpose of description specific embodiment, it is not intended that in limitation the utility model.

Please refer to Fig. 1-Fig. 7, mobile dance screen device provided by one embodiment of the utility model, including moving trolley 100, the column supporting structural in the moving trolley 100, and the display screen folding on the column supporting structural Folded mechanism 300.

The moving trolley 100 is the main body supporting structure that screen device is waved in the movement, for being placed in the moving trolley 100 On column 200 be supported.

In the present embodiment, the moving trolley 100 includes frame 10, and multiple tires on the frame 10 20, multiple tires 20 are rotatablely connected with the frame 10, and can be realized with the rolling of tire 20 and be waved screen dress to the movement Whole movement is set, the effect that movement dance screen device flexibly shifts is realized with this.

Further, it is additionally provided with supporting foot structure (not shown) in the moving trolley 100, so that people should in use When mobile dance screen device, it can be contacted and be supported with supporting foot structure with supporting bable tops, played with this and improve movement dance screen Whole stability when device works.

In the present embodiment, the column supporting structural includes column 200, for driving the column 200 in level The first rotary drive mechanism 210 that direction is rotated, and for driving the column 200 to carry out left and right pendulum in the vertical direction Dynamic swing driving mechanism 220 realizes the rotation to the display screen fold mechanism 300 being placed on the column supporting structural with this And the composite drive to swing.

Also referring to Fig. 8, the first rotary drive mechanism 210 and wobble drive machine are provided in the moving trolley 100 Structure 220, first rotary drive mechanism 210 can drive the column 200 to rotate in the horizontal direction, the wobble drive Mechanism 220 can drive the column 200 to swing in the vertical direction.

Wherein, first rotary drive mechanism 210 includes the rotating part 211 that can be rotated in the horizontal direction, institute It states and is provided with pivoting support 212 on rotating part 211, the column 200 and the pivoting support 212 are hinged；The wobble drive Mechanism 220 can drive the column 200 to swing on the pivoting support 212.It is appreciated that first rotation is driven Motivation structure 210 drive the column 200 rotate in the horizontal direction in horizontal direction be the 100 place plane of moving trolley Direction.

First rotary drive mechanism 210 includes the first rotary drive motor 201, first driving gear 202 and rotation Fluted disc, the rotary fluted disc is the rotating part 211 of first rotary drive mechanism 210, and the rotary fluted disc is along level side To setting, the first driving gear 202 is connect with the shaft rotation stop of first rotary drive motor 201, and described the Tooth on one driving gear 202 is meshed with the tooth on the rotary fluted disc.

Further, first rotary drive mechanism 210 further includes speed reducer 203, first rotary drive motor 201 are connect by the speed reducer 203 with the first driving 202 rotation stop of gear, so as to improve the first rotation driving electricity Torque when machine 201 is to the first driving gear 202 rotation driving.So that first rotary drive mechanism 210 is working When, first rotary drive motor 201 drives the first driving gear 202 to rotate, and passes through the first driving gear 202 engage with the raker tooth of the rotary fluted disc, realize that the rotation to rotary fluted disc drives, and then drive and pass through pivoting support 212 columns 200 being fixed on the rotary fluted disc rotate, and realize 210 column 200 of the first rotary drive mechanism with this Rotation driving in the horizontal direction.

Wherein, two pivoting supports 212 are further fixed in the disk of the rotary fluted disc, so that the rotary fluted disc is by institute The driving of the first rotary drive motor 201 is stated when being rotated, the column can be driven by two pivoting supports 212 200 rotations have the function of improving the stability of the rotation driving of rotary fluted disc column 200；And two pivoting supports 212 Two articulated shaft (not shown) being hinged respectively with the column 200 are collinearly arranged, and ensure the swing driving mechanism with this The wobble drive of 220 columns 200.It is appreciated that the quantity for the pivoting support 212 being fixed on the rotary fluted disc is not limited to In diagrammatically shown, those skilled in the art can be set the quantity for the pivoting support 212 being fixed on rotary fluted disc according to demand Be set to one, it is three, even more, when pivoting support 212 is set as multiple, multiple pivoting supports 212 respectively with The articulated shaft that the column 200 is hinged collinearly is arranged.

In the present embodiment, the swing driving mechanism 220 is set as electric cylinder, the electric cylinder and the column 200 is hinged in predetermined angle, realizes the column 200 on pivoting support 212 with the stretching motion by the electric cylinder Reciprocally swinging.

Specifically, first rotary drive mechanism 210 is arranged in the cylinder body of the electric cylinder in articulated manner On rotating part 211, it is preferable that be provided with connecting support 221, and institute on the rotating part 211 of first rotary drive mechanism 210 It states connecting support 221 and the cylinder body of the electric cylinder is hinged；And the flexible bar portion of the electric cylinder and the column 200 are cut with scissors It connects, is specifically hinged with the mechanical arm (not shown) being provided on 200 side wall of column.That is, present embodiment Swing driving mechanism 220 is arranged on the rotating part 211 of first rotary drive mechanism 210, and can be with the column 200 The rotating part 211 is followed to be rotated together.

Further, the swing driving mechanism 220 of present embodiment includes two electric cylinders, and two electric cylinders are simultaneously Column setting, and it is hinged with the column 200 and the rotating part 211 respectively.When so that the swing driving mechanism 220 working, two A electric cylinder starts simultaneously and column 200 carries out wobble drive, realizes column 200 in first rotary driving machine with this The dual fail-safe of wobble drive on the rotating part 211 of structure 210, and then play and ensure 220 column 200 of swing driving mechanism Wobble drive.It is appreciated that the swing driving mechanism 220 is not limited to electric cylinder shown in present embodiment, this field skill Art personnel can set cylinder, oil cylinder or electric pushrod etc. for swing driving mechanism 220 according to demand.

The display screen fold mechanism 300 includes multiple mechanical arms 310, and corresponding to the more of the mechanical arm 310 setting A display screen 320, the plurality of mechanical arm 310 are successively attached with connecting joint 330, and the column 200 with it is right It is attached between the mechanical arm 310 answered also by connecting joint 330.

In the present embodiment, after the mechanical arm 310 on the display screen fold mechanism 300 is fully deployed, correspond to institute The display screen 320 stated on mechanical arm 310 is arranged towards unified, and when the mechanical arm 310 on the display screen fold mechanism 300 is complete It is arranged in parallel corresponding to the display screen 320 on the mechanical arm 310 after portion folds.

Specifically, the display screen fold mechanism 300 in present embodiment specifically includes three mechanical arms 310, and each institute It states to respectively correspond on mechanical arm 310 and is provided with a display screen 320.It is appreciated that the quantity of the mechanical arm 310 is not limited to It is diagrammatically shown, those skilled in the art can according to demand be arranged there are two, four, it is even more.

Wherein, each adjacent two mechanical arm 310, between the column 200 and the corresponding mechanical arm 310 respectively with it is right The connecting joint 330 answered is hinged, and mechanical arm 310 and the column 200 described in each adjacent two and corresponding institute Can mutually be folded by stating by 180 ° between mechanical arm 310, realize the whole folding of the display screen fold mechanism 300 with this；On the one hand Convenient for the carrying of movement dance screen device entirety, the broadcasting content on display screen 320 on the other hand can be cooperated to drive machinery Arm 310 carries out folding movement, to improve the fidelity of broadcasting content on display screen 320.

For ease of description, wherein the two neighboring mechanical arm 310 is respectively defined as double-strand chain for present embodiment definition Fold mechanism, also referring to Fig. 9, the double-strand chain fold mechanism includes first mechanical arm 301, second mechanical arm 302, difference The first hinged connecting joint 303 with the first mechanical arm 301 and the second mechanical arm 302.The first mechanical arm 301 On be provided with the first actuator 304, first actuator 304 can drive first connecting joint 303 towards described The direction of one mechanical arm 301 rotates 90 °；The second actuator 305, second driving are provided in the second mechanical arm 302 Part 305 can drive the second mechanical arm 302 to rotate 90 ° towards the direction of first connecting joint 303.This is realized with this It is mutual corresponding to the display screen 320 on the mechanical arm 310 after mechanical arm 310 on display screen fold mechanism 300 all folds It is arranged in parallel, wherein after two 310 mutual foldings of mechanical arm, it being capable of face corresponding to the display screen 320 on two mechanical arms 310 Be provided opposite to, and between two display screens 320 between be separated with preset distance, being played with this prevents two display screens 320 because mutually touching It touches and damages.

Wherein, first actuator 304 and/or second actuator 305 are set as electric cylinder.It is appreciated that institute It states the first actuator 304 and second actuator 305 is not limited to diagrammatically shown electric cylinder, those skilled in the art can be with Cylinder, oil cylinder, electric pushrod etc. are set by first actuator 304 and/or second actuator 305 according to demand.

Further, first actuator 304 includes two electric cylinders, and two electric cylinders are arranged in side by side In the first mechanical arm 301, wherein the tail end in electric cylinder upper cylinder body portion is hinged with the first mechanical arm 301, tool Body can realize the hinged of the two by the erection support 3011 being fixed in the first mechanical arm 301；And second driving Part 305 includes two electric cylinders, and two electric cylinder separations are on the two opposite sides of the second mechanical arm 302, described Cylinder body on electric cylinder limits in the second mechanical arm 302 especially by limit frame 3021, wherein the electric cylinder Cylinder body and the limitting casing 3021 it is hinged.It is appreciated that first actuator 304 is set as two electric cylinders, and institute It states the second actuator 305 and is set as two electric cylinders, realize 305 pairs of institutes of first actuator 304 and second actuator It states first mechanical arm 301 and the second mechanical arm 302 folds the dual fail-safe of driving, and then improve the first mechanical arm 301 mutually fold stability when driving with the second mechanical arm 302.

In the present embodiment, real by connecting joint 330 between the column 200 and the corresponding mechanical arm 310 The working principle now mutually folded realizes that the working principle mutually folded is identical between two neighboring mechanical arm 310, herein It is not unfolded to illustrate.

In the present embodiment, the display screen 320 is arranged on the corresponding mechanical arm 310, and can be relative to The corresponding mechanical arm 310 is rotated along the direction of the mechanical arm 310.

Each mechanical arm 310 is respectively arranged with the second rotary driving machine on the display screen fold mechanism 300 of present embodiment Structure 311, and display screen 320 is arranged on second rotary drive mechanism 311 on the corresponding mechanical arm 310, with institute Stating the second rotary drive mechanism 311 drives the display screen 320 to be rotated on the corresponding mechanical arm 310.

Also referring to Figure 10, second rotary drive mechanism 311 drives including the second rotary drive motor 3111, second Moving gear 3112 and rotate gear 3113, the shaft of second rotary drive motor 3111 and the second driving gear The tooth of the connection of 3112 rotation stops, the second driving gear 3112 is meshed with the tooth of the rotate gear 3113；The mechanical arm The corresponding display screen 320 is fixed on the flank of tooth of the rotate gear 3113 on 310, preferably by described in ring flange realization Being fixedly connected between display screen 320 and the rotate gear 3113.Second rotary drive mechanism 311 at work, institute Stating the second rotary drive motor 3111 drives the second driving gear 3112 to rotate, and passes through the second driving gear 3112 With engaging for the raker tooth of the rotate gear 3113, the rotate gear 3113 is driven to be rotated, and then realized to being fixed on The rotation of display screen 320 in the rotate gear 3113 drives.It is appreciated that second rotary drive mechanism 311 not office It is limited to diagrammatically shown, those skilled in the art can set direct-drive type for second rotary drive mechanism 311 according to demand Motor, disc type electric machine etc., and for carrying out rotation driving to the display screen 320.

Wherein, overturning is provided on the mechanical arm 310 being located at the top in the display screen fold mechanism 300 of present embodiment to drive Motivation structure 312, the turnover driving mechanism 312 can drive the corresponding display screen 320 along the direction of the mechanical arm 310 It spins upside down.That is, display screen 320 on a mechanical arm 310 being located at the top in present embodiment is in addition to being capable of phase The mechanical arm 310 is rotated, mechanical arm 310 is followed to be folded, additionally it is possible to turn over up and down relative to the mechanical arm 310 Turn, and then improves the display screen folding device 300 when in use, the effect that display screen 320 can be presented.

Also referring to Figure 11, the turnover driving mechanism 312 includes turn drive motor 3121, and third drives gear 3122 and turning gear 3123, the axial direction of the turning gear 3123 it is parallel with the direction of the corresponding display screen 320 It is arranged and is fixedly connected.It is preferred that being realized between the turning gear 3123 and the display screen 320 with turning-over support seat 3124 It is fixedly connected, wherein, the turning-over support seat 3124 is fixed on the flank of tooth of the turning gear 3123 by connectors such as screws On, and one end that the turning-over support seat 3124 stretches out the turning gear 3123 is vertical with the display screen 320 fixed；It is described The shaft of turn drive motor 3121 is connect with third driving 3122 rotation stop of gear, on the third driving gear 3122 Tooth be meshed with the tooth on the turning gear 3123.At work, the overturning driving is electric for the turnover driving mechanism 312 Machine 3121 drives the third driving gear 3122 to rotate, and drives gear 3122 and the turning gear by the third The engagement of 3123 raker tooth carries out rotation driving to the turning gear 3123, described in display screen 320 is vertically fixed on On turning gear 3123, so that the rotation of the turning gear 3123 is converted into display screen 320 along corresponding 310 side of mechanical arm To spin upside down, and spinning upside down for the display screen 320 specifically can be by the 3121 upper shaft portion of turn drive motor Positive and reverse return transfers realization driving.

It is appreciated that corresponding display screen 320 passes through on the mechanical arm 310 on top on the display screen fold mechanism 300 Second rotary drive mechanism 311 is arranged on the mechanical arm 310, with second rotary drive mechanism, 311 pairs of institutes It states display screen 320 and carries out rotation driving, so the composite drive of rotation and swing in order to realize display screen 320, this embodiment party Formula will be used to be fixed on the rotate gear 3113 that the display screen 320 is fixed described on second rotary drive mechanism 311 On turning-over support seat 3124 on turnover driving mechanism 312, so that corresponding to the second rotation driving of the display screen 320 setting Mechanism 311 follows wobble drive of the display screen 320 together by the turnover driving mechanism 312.

From the foregoing, it will be observed that the mobile dance screen device of present embodiment is at work, the display screen on the mechanical arm 310 320 while follow corresponding mechanical arm 310 to do folding movement, can be rotated on corresponding mechanical arm 310, and top Mechanical arm 310 can also spin upside down, and entire display screen fold mechanism 300 can also be along level on column 200 Direction is rotated, and is swung on vertical direction, and cooperates the broadcasting content of display screen 320, finally shows three The visual effect of integral type is tieed up, and then meets the use demand of stage.

Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited In contradiction, all should be considered as described in this specification.

Above-described embodiments merely represent several embodiments of the utility model, the description thereof is more specific and detailed, But it cannot be understood as the limitations to utility model patent range.It should be pointed out that for the common skill of this field For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to The protection scope of the utility model.Therefore, the scope of protection shall be subject to the appended claims for the utility model patent.

Claims (10)

1. a kind of double hinged fold mechanisms for mobile dance screen device, it is characterised in that: including first mechanical arm, the second machinery Arm, the first connecting joint, the first actuator and the second actuator, the first mechanical arm and the second mechanical arm respectively with institute State that the first connecting joint is hinged, the flexible bar portion of first actuator and first connecting joint are hinged, and described first Actuator can drive first connecting joint to rotate relative to the first mechanical arm；The telescopic rod of second actuator Portion and first connecting joint are hinged, and second actuator can drive the second mechanical arm relative to described first Connecting joint rotation.

2. double hinged fold mechanisms according to claim 1 for mobile dance screen device, it is characterised in that: described first Actuator is arranged in articulated manner in the first mechanical arm, and first actuator can drive first connection Joint rotates 90 ° relative to the first mechanical arm.

3. double hinged fold mechanisms according to claim 2 for mobile dance screen device, it is characterised in that: described first Electric cylinder is arranged in actuator, and tail end and the first mechanical arm in electric cylinder upper cylinder body portion are hinged.

4. double hinged fold mechanisms according to claim 3 for mobile dance screen device, it is characterised in that: described first Actuator includes two electric cylinders, and two electric cylinders are arranged in side by side in the first mechanical arm.

5. double hinged fold mechanisms according to claim 1 to 4 for mobile dance screen device, it is characterised in that: institute It states the second actuator to be arranged in articulated manner in the second mechanical arm, and second actuator can drive described Two mechanical arms rotate 90 ° relative to first connecting joint.

6. double hinged fold mechanisms according to claim 5 for mobile dance screen device, it is characterised in that: described second Actuator is set as electric cylinder, and electric cylinder upper cylinder body portion is limited in the second mechanical arm by limit frame, and institute The cylinder body and the limitting casing for stating electric cylinder are hinged.

7. double hinged fold mechanisms according to claim 6 for mobile dance screen device, it is characterised in that: described second Actuator includes two electric cylinders, and two electric cylinder separations are on the two opposite sides of the second mechanical arm.

8. double hinged fold mechanisms according to claim 1 for mobile dance screen device, it is characterised in that: described first Connecting joint respectively with the first mechanical arm, the second mechanical arm, first actuator and the second actuator phase The trapezoidal shape in the cross section of hinged part.

9. double hinged fold mechanisms according to claim 1 for mobile dance screen device, it is characterised in that: described first There are two the hinged joint settings being hinged between mechanical arm and first connecting joint.

10. double hinged fold mechanisms according to claim 1 for mobile dance screen device, it is characterised in that: described the There are two the hinged joint settings being hinged between two mechanical arms and first connecting joint.