CN218003916U - Lifting mechanism and display device - Google Patents

Abstract

The utility model provides an elevating system and display device, wherein, this elevating system includes first supporting part, second supporting part, folding assembly and drive assembly, and the second supporting part forms the support space who is used for supporting the screen with first supporting part, and folding assembly one end is connected with first supporting part, and the other end is connected with the second supporting part, and drive assembly is movable to be set up on folding assembly. The utility model discloses well folding assembly extends and folds through the drive assembly drive, can effectively realize the extension and the shrink of screen, guarantees that the screen is stable smooth-going when going up and down to the movable setting of drive assembly can save occupation space when realizing drive folding assembly on folding assembly, realizes that projection screen equipment is miniaturized when can realizing large-size screen projection effect, simple structure, and the practicality is strong.

Description

Lifting mechanism and display device

Technical Field

The utility model relates to a display device technical field, more specifically say, relate to an elevating system and display device.

Background

The projection screen is called projection screen for short, the projection screen is one of the most commonly used products in the peripheral equipment of the projector, and if the projection screen is properly matched with the projector, the excellent projection effect can be obtained.

The projection screen can be divided into a hard screen and a soft screen in material and manufacturing process. The projection screen types and technical parameters are correlated, complementary and differentiated. The key to the technology is how the material on the screen surface can scatter, reflect and refract incident light. Aiming at the two screens, two projection screen technologies, namely a soft screen and a hard screen, appear in the market.

Soft screen technique adopts flexible display curtain cooperation over-and-under type structure more, and the current common way sets up a pivot in the top of projecting apparatus, and the flexible display curtain rolling is in the pivot, when needs adopt the flexible display curtain to show, and the pivot rotates to make the flexible display curtain fall and realize opening. Because flexible display curtain is in the expansion back, its one side that deviates from the pivot is provided with lift bearing structure, and this lift bearing structure is used for flexible display curtain to produce and rocks, guarantees the display effect of flexible display curtain.

For example, in the prior art, an opening and closing structure is used for opening and closing a flexible screen, the opening and closing structure is defined to have a width direction, the opening and closing structure comprises two rolls of screen pieces, the two rolls of screen pieces are arranged oppositely, one side of the flexible screen is wound on one roll of screen piece, and the other side of the flexible screen is wound on the other roll of screen piece; the device comprises at least two linkage assemblies which are arranged at intervals in the width direction, wherein each linkage assembly comprises a first pushing piece and a second pushing piece, one end of the first pushing piece is connected with one roll of screen, one end of the second pushing piece is connected with the other roll of screen, and the other end of the first pushing piece is in transmission connection with the other end of the second pushing piece; and the driving assembly drives the two first pushing pieces to move away from each other or approach each other, or drives the two second pushing pieces to move away from each other or approach each other, so that the linkage assembly drives the two screen pieces to synchronously open or close the flexible screen.

Although the flexible screen can be opened or drawn in step of convenient and fast to the aforesaid structure that opens and shuts, this structure practical value is not high, and this structure that opens and shuts is complicated, needs four catch bars of simultaneous drive to rotate to the display height of the unable flexible display curtain of adjusting of this structure that opens and shuts. Therefore, the application practicability of the lifting support structure in the prior art in the technical field of projection screens is low.

In addition, in recent years, the design of projection screens has been pursued to realize large screen projection and miniaturization of projection screen apparatuses. Therefore, whether the lifting control technology can be effectively used in the technical field of projection screens is a considerable problem, and the miniaturization of projection screen equipment is realized while the large-screen projection effect is not reduced as much as possible.

Therefore, the prior art is in need of improvement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an elevating system and display device aims at solving and effectively is used for projection screen technical field with the lift control technique, realizes the miniaturized technical problem of projection screen equipment when probably not reducing large-size screen projection effect.

In order to achieve the purpose, the utility model adopts the technical proposal that:

the utility model provides an elevating system for projection screen's lift, wherein, include:

a first support section;

a second support part forming a support space with the first support part for supporting a screen;

one end of the folding assembly is connected with the first supporting part, and the other end of the folding assembly is connected with the second supporting part;

a drive assembly movably disposed on the folding assembly;

the folding assembly is driven by the driving assembly to extend and fold, so that the second supporting part is driven to move relative to the first supporting part to extend and retract the screen, and the driving assembly is driven by the folding assembly to swing along the supporting space.

In one embodiment, the folding assembly comprises: a first connecting member, a second connecting member, a third connecting member, and a fourth connecting member;

one end of the first connecting member is movably connected with the first supporting part, the middle part of the first connecting member is hinged with the middle part of the second connecting member, the other end of the first connecting member is hinged with one end of the third connecting member, the middle part of the third connecting member is hinged with the middle part of the fourth connecting member, and the other end of the third connecting member is movably connected with the second supporting part;

one end of the second connecting member is hinged to the first supporting portion, the other end of the second connecting member is hinged to one end of the fourth connecting member, and the other end of the fourth connecting member is hinged to the second supporting portion.

In one embodiment, one end of the first connecting member is rotatably connected to the first supporting portion, one end of the first connecting member is slidably connected to the first supporting portion, and one end of the second connecting member is hinged to the first supporting portion;

the other end of the third connecting member is rotatably connected with the second supporting part, the other end of the third connecting member is connected with the second supporting part in a sliding mode, and the other end of the fourth connecting member is hinged with the second supporting part.

In an embodiment, first connecting element includes first dwang and second dwang, second connecting element includes third dwang and fourth dwang, third connecting element includes fifth dwang and sixth dwang, fourth connecting element includes seventh dwang and eighth dwang, first dwang the third dwang the fifth dwang seventh dwang is connected and is formed first X type beta structure, the second dwang the fourth dwang the sixth dwang the eighth dwang is connected and is formed second X type beta structure, just first X type beta structure with second X type beta structure parallel arrangement.

In one embodiment, the first connecting member further comprises a first roller assembly comprising:

the first roller body is positioned between the first rotating rod and the second rotating rod;

first pivot, first pivot articulate respectively in first dwang and second dwang, first roll roller body passes through first pivot with first supporting part sliding connection, just be provided with on the first supporting part with first pivot complex first slide rail.

In one embodiment, the third connecting member further comprises a second roller assembly comprising:

the second roller body is positioned between the fifth rotating rod and the sixth rotating rod;

the second pivot is hinged to the fifth rotating rod and the sixth rotating rod respectively, the second roller body is connected with the second supporting portion in a sliding mode through the second pivot, and a second sliding rail matched with the second pivot is arranged on the second supporting portion.

In one embodiment, the drive assembly has one end disposed between the first connecting member and the first connecting member intermediate portion and another end disposed between the third connecting member intermediate portion and the third connecting member other end.

In one embodiment, the drive assembly is disposed in a sandwich between the first X-fold and the second X-fold.

In one embodiment, the drive assembly includes a cylinder drive, the cylinder drive including:

the cylinder body is rotatably connected between the first rotating rod and the second rotating rod;

and the piston rod is movably connected with the cylinder body, and one end, far away from the cylinder body, of the piston rod is rotatably connected between the fifth rotating rod and the sixth rotating rod.

A display device, wherein the display device comprises a lifting mechanism as described above. Therefore, the display device can have all structural features and beneficial effects of the lifting mechanism, and is not described in detail herein.

The utility model provides a pair of elevating system and display device's beneficial effect lies in at least:

the utility model provides a lifting mechanism and display device, wherein, this lifting mechanism includes first supporting part, second supporting part, folding assembly and drive assembly, the second supporting part with the first supporting part forms the support space that is used for supporting the screen, folding assembly one end with the first supporting part is connected, the other end with the second supporting part is connected, the drive assembly movably sets up in on the folding assembly; the folding assembly is driven by the driving assembly to extend and fold, so that the second supporting part is driven to move relative to the first supporting part to extend and retract the screen, and the driving assembly is driven by the folding assembly to swing along the supporting space. The utility model discloses well folding assembly passes through the drive assembly drive and extend and fold, can effectively realize the extension and the shrink of screen, guarantee that the screen is stable smooth-going when going up and down to drive assembly movably sets up on folding assembly, can save occupation space when realizing drive folding assembly, realizes projection screen equipment miniaturation when can realizing large-size screen projection effect, simple structure, and the practicality is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a lifting mechanism provided in an embodiment of the present invention;

fig. 2 is a schematic diagram of a folding state of the lifting mechanism provided in the embodiment of the present invention;

fig. 3 is a schematic view of an assembly structure of a cylinder body according to an embodiment of the present invention;

fig. 4 is a schematic view of an assembly structure of a piston rod according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a driving assembly according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first roller assembly according to an embodiment of the present invention;

fig. 7 is a schematic view of a specific application effect of the lifting mechanism provided in the embodiment of the present invention;

fig. 8 is a schematic view of an assembly structure of a lifting mechanism according to an embodiment of the present invention;

fig. 9 is an assembly diagram of a side view of a lifting mechanism according to an embodiment of the present invention;

fig. 10 is an effect diagram of the lifting mechanism provided by the embodiment of the present invention in a closed state;

fig. 11 is an assembly structure diagram of a closed state of the lifting mechanism according to the embodiment of the present invention;

fig. 12 is an enlarged view of a portion B of fig. 2.

Wherein, in the figures, the various reference numbers:

100. a first support section; 200. a second support portion; 300. a folding assembly; 400. a drive assembly; 500. a screen base; 600. a winding mechanism; 700. a screen; 800. a screen upper cover; 110. a first slide rail; 210. a second slide rail; 300a, a first X-fold configuration; 300b, a second X-fold configuration; 310. a first connecting member; 320. a second connecting member; 330. a third connecting member; 340. a fourth connecting member; 311. a first rotating lever; 312. a second rotating lever; 313. a first roller assembly; 313a, a first roller body; 313b, a first pivot; 321. a third rotating rod; 322. a fourth rotating rod; 331. a fifth rotating rod; 332. a sixth rotating rod; 333. a second roller assembly; 333a, a second roller body; 333b, a second pivot; 341. a seventh rotating lever; 342. an eighth rotating rod; 410. a cylinder body; 420. a piston rod; 430. a first fixed seat; 440. a second fixed seat; 431. a first cylinder boom; 432. a first U-shaped seat; 433. a first cylinder pivot; 441. a second cylinder cross-member; 442. a second U-shaped seat; 443. a second cylinder pivot.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positions based on the orientations or positions shown in the drawings, and are for convenience of description only and not to be construed as limiting the technical solution. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.

Referring to fig. 1, the present embodiment provides a lifting mechanism for lifting a projection screen, including: the foldable screen comprises a first supporting part 100, a second supporting part 200, a folding assembly 300 and a driving assembly 400, wherein the second supporting part 200 and the first supporting part 100 form a supporting space for supporting a screen 700, one end of the folding assembly 300 is connected with the first supporting part 100, the other end of the folding assembly 300 is connected with the second supporting part 200, the driving assembly 400 is movably arranged on the folding assembly 300, please refer to fig. 2, the folding assembly 300 is driven by the driving assembly 400 to extend and fold, further, the second supporting part 200 is driven to move relative to the first supporting part 100 so as to extend and retract the screen 700, and the driving assembly 400 is driven by the folding assembly 300 to swing along the supporting space.

In this embodiment, the lifting mechanism includes a first supporting portion 100, a second supporting portion 200, a folding assembly 300 and a driving assembly 400, the folding assembly 300 is disposed between the first supporting portion 100 and the second supporting portion 200, and the driving assembly 400 is movably disposed on the folding assembly 300, the folding assembly 300 is driven by the driving assembly 400 to extend and fold, and further drives the second supporting portion 200 to move relative to the first supporting portion 100, so as to extend and retract the screen 700, and the driving assembly 400 swings along the supporting space by driving the folding assembly 300, wherein the driving assembly 400 is disposed on the folding assembly 300, the driving assembly 400 directly acts on the folding assembly 300, the stress is more direct, the jamming phenomenon is avoided, the structure is simple and effective, the stress is smooth and the bearing force is large, and the driving assembly 400 can effectively drive the folding assembly 300 on one hand; on the other hand, the driving assembly 400 does not need extra occupied space and can swing along with the folding assembly 300, so that the occupied space of the whole device can be saved, and the miniaturization of the projection screen device is realized.

Therefore, folding assembly 300 extends and folds through the drive of drive assembly 400 in this embodiment, can effectively realize the extension and the shrink of screen 700, guarantee that screen 700 is stable smooth going on when going up and down, and drive assembly 400 movably sets up on folding assembly 300, can save occupation space when realizing drive folding assembly 300, realize projection screen equipment miniaturization when can realizing large-size screen projection effect, simple structure, the practicality is strong.

Preferably, referring to fig. 1, the folding assembly 300 includes: a first connecting member 310, a second connecting member 320, a third connecting member 330, and a fourth connecting member 340;

one end of the first connecting member 310 is movably connected with the first support 100, the middle of the first connecting member 310 is hinged with the middle of the second connecting member 320, the other end of the first connecting member 310 is hinged with one end of the third connecting member 330, the middle of the third connecting member 330 is hinged with the middle of the fourth connecting member 340, and the other end of the third connecting member 330 is movably connected with the second support 200;

one end of the second connecting member 320 is hinged to the first support 100, the other end of the second connecting member 320 is hinged to one end of the fourth connecting member 340, and the other end of the fourth connecting member 340 is hinged to the second support 200. One end of the driving assembly 400 is disposed between one end of the first connecting member 310 and the middle portion of the first connecting member 310, and the other end of the driving assembly 400 is disposed between the middle portion of the third connecting member 330 and the other end of the third connecting member 330.

Drive assembly 400 can effectively drive folding assembly 300 and go up and down in this embodiment, and is rational in infrastructure, can realize that screen 700 is stable smooth going on when going up and down to can save occupation space, realize projection screen equipment miniaturation when can realizing large-size screen projection effect. For example, the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, and at this time, the first connecting member 310 and the second connecting member 320 jointly act on the first supporting portion 100, and the third connecting member 330 and the fourth connecting member 340 jointly act on the second supporting portion 200, so that the second supporting portion 200 is lifted upwards, and the first connecting member 310 and the second connecting member 320 are hinged, and the third connecting member 330 and the fourth connecting member 340 are hinged, so that the lifting can be ensured to be smooth, and the screen 700 can be stably and smoothly lifted. When the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to contract, based on the same principle, the screen 700 can be stably and smoothly moved when being lowered.

In this embodiment, can convenient and fast extend and fold folding assembly 300 through drive assembly 400 for the realization is to opening and drawing in of screen 700, and can control folding assembly 300's lift height through drive assembly 400, and then can realize the regulation to projection screen's height, is used for realizing the regulation to projection screen's size of a dimension.

Preferably, referring to fig. 1, one end of the first connecting member 310 is rotatably connected to the first supporting portion 100, one end of the first connecting member 310 is slidably connected to the first supporting portion 100, and one end of the second connecting member 320 is hinged to the first supporting portion 100;

the other end of the third connecting member 330 is rotatably connected to the second supporting portion 200, the other end of the third connecting member 330 is slidably connected to the second supporting portion 200, and the other end of the fourth connecting member 340 is hinged to the second supporting portion 200.

For example, referring to fig. 1 and fig. 2, when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, the second connecting member 320 rotates along the first supporting portion 100, the first connecting member 310 rotates along the first supporting portion 100 and moves transversely along the first supporting portion 100, the transverse movement direction is toward the second connecting member 320, that is, when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, the first connecting member 310 approaches the second connecting member 320. In addition, the fourth connecting member 340 rotates along the second support portion 200, the third connecting member 330 transversely moves along the second support portion 200 while rotating along the second support portion 200, and the third connecting member 330 transversely moves toward the fourth connecting member 340, that is, when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, the third connecting member 330 approaches the fourth connecting member 340, in this embodiment, the second connecting member 320 is hinged to the first support portion 100, the fourth connecting member 340 is hinged to the second support portion 200, and the second connecting member 320 and the fourth connecting member 340 have a positioning function, so that the lifting can be kept stable, and in combination with the movable connection of the first connecting member 310 and the third connecting member 330, the structure is stable, the bearing force is uniform, and the bearing force is large.

In the present embodiment, referring to fig. 1 and 12, when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, the first connecting member 310 and the third connecting member 330 are close to each other toward the middle, and the height that can extend is higher than that when the first connecting member 310 and the third connecting member 330 do not move laterally, and when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to contract, the first connecting member 310 and the third connecting member 330 move laterally, and the height that can fold is lower than that when the first connecting member 310 and the third connecting member 330 do not move laterally toward the side ends (the side far from the middle) than that when the first connecting member 310 and the third connecting member 330 do not move laterally. Therefore, this embodiment structure is steady, and the atress is even and the bearing capacity is big, can reduce fold condition's occupation space to can increase the rising height of extension state, can realize the large-size screen projection effect when realizing projection screen equipment miniaturation promptly.

Preferably, referring to fig. 1, the first connecting member 310 includes a first rotating rod 311 and a second rotating rod 312, the second connecting member 320 includes a third rotating rod 321 and a fourth rotating rod 322, the third connecting member 330 includes a fifth rotating rod 331 and a sixth rotating rod 332, the fourth connecting member 340 includes a seventh rotating rod 341 and an eighth rotating rod 342, the first rotating rod 311, the third rotating rod 321, the fifth rotating rod 331 and the seventh rotating rod 341 are connected to form a first X-shaped folding structure 300a (shown in fig. 9), the second rotating rod 312, the fourth rotating rod 322, the sixth rotating rod 332 and the eighth rotating rod 342 are connected to form a second X-shaped folding structure 300b, and the first X-shaped folding structure 300a and the second X-shaped folding structure 300b are disposed in parallel.

In the embodiment, the folding assembly 300 specifically includes a first X-shaped folding structure 300a and a second X-shaped folding structure 300b, i.e., the folding assembly 300 includes a group of parallel X-shaped folding structures, which has a stable structure, uniform stress and large bearing capacity.

Preferably, referring to fig. 1, the first connecting member 310 further includes a first roller assembly 313, referring to fig. 6, the first roller assembly 313 includes:

a first roller body 313a, the first roller body 313a being located between the first rotating rod 311 and the second rotating rod 312, the first roller body 313a being adapted to be slidably connected to the first supporting portion 100;

the first pivot 313b and the first pivot 313b are respectively hinged to the first rotating rod 311 and the second rotating rod 312, the first roller body 313a is slidably connected to the first supporting portion 100 through the first pivot 313b, and the first supporting portion 100 is provided with a first slide rail 110 matched with the first pivot 313b, please refer to fig. 12, which illustrates an assembly diagram of the first roller assembly 313 and the first supporting portion 100.

Referring to fig. 1, fig. 6 and fig. 12, the third connecting member 330 further includes a second roller assembly 333, and the second roller assembly 333 includes:

a second roller body 333a, the second roller body 333a being located between the fifth rotating lever 331 and the sixth rotating lever 332, the second roller body 333a being for sliding connection with the second support portion 200;

the second pivot 333b and the second pivot 333b are respectively hinged to the fifth rotating lever 331 and the sixth rotating lever 332, the second roller body 333a is slidably connected to the second support portion 200 through the second pivot 333b, and the second support portion 200 is provided with the second slide rail 210 engaged with the second pivot 333 b.

In this embodiment, the first slide rail 110 and the second slide rail 210 have guiding and limiting functions, the first rolling roller assembly 313 is used for the sliding connection and the rotating connection of the first connecting member 310 along the first supporting portion 100, the second rolling roller assembly 333 is used for the sliding connection and the rotating connection of the third connecting member 330 along the second supporting portion 200, in this embodiment, the first rolling roller assembly 313 and the second rolling roller assembly 333 stabilize the movement of the folding assembly, the structure is stable, the stress is uniform, the occupied space in the folded state is reduced, and the rising height in the extended state can be increased, the structure is simple, and the practicability is strong.

For example, referring to fig. 1, fig. 2 and fig. 12, the first stage: when the driving assembly 400 drives the first connecting member 310 and the third connecting member 330 to extend, the second connecting member 320 rotates along the first support part 100, the first connecting member 310 moves laterally along the first slide rail 110 on the first support part 100 by the first roller assembly 313 (the lateral movement direction is toward one side of the second connecting member 320), the first connecting member 310 rotates along the first slide rail 110 of the first support part 100 by the first pivot 313b, and on the other side, the fourth connecting member 340 rotates along the second support part 200, the third connecting member 330 moves laterally along the second slide rail 210 on the second support part 200 by the second roller assembly 333, and the third connecting member 330 rotates along the second slide rail 210 of the second support part 200 by the second pivot 313b, i.e., the rotation is coordinated with the lateral movement of the first connecting member 310, and the rotation is coordinated with the lateral movement of the third connecting member 330 so that the second support part 200 rises until the first pivot 313b moves to the right end of the first slide rail 110 (or the second pivot 333b moves to the right end of the second slide rail 210, 333b moves to the second pivot 333b, and the second pivot 333 moves up and down and up and down).

And a second stage: the first pivot 313b and the second pivot 333b do not move, that is, the first connecting member 310 and the third connecting member 330 do not move laterally, and at this time, the first connecting member 310 and the third connecting member 330 only rotate, and are driven by the driving assembly 400, and the second supporting portion 200 is lifted in cooperation with the rotation of the second connecting member 320 and the fourth connecting member 340.

In this embodiment, the second connecting member 320 is hinged to the first supporting portion 100, the fourth connecting member 340 is hinged to the second supporting portion 200, and the second connecting member 320 and the fourth connecting member 340 have a positioning function, so that the arrangement can be kept stable during lifting, the first connecting member 310 can rotate on the first supporting portion 100 through the first roller assembly 313, and a certain range of transverse movement can be realized in the first sliding rail 110; the third connecting member 330 can rotate on the second supporting portion 200 through the second roller assembly 333, and can move laterally within a certain range in the second sliding rail 210, so that the freedom of movement of the folding assembly 300 can be increased, the phenomenon of locking of the folding assembly 300 in the lifting process can be avoided, the structure is stable, the stress is uniform, and the bearing capacity is large.

Preferably, referring to fig. 1 and 9, the driving element 400 is disposed in the interlayer between the first X-shaped folding structure 300a and the second X-shaped folding structure 300 b. The folding assembly 300 can be stressed evenly and is stable in structure, the driving assembly 400 can swing along the supporting space through the driving of the folding assembly 300, occupied space can be saved, and the miniaturization of projection screen equipment is realized while a large-screen projection effect is realized.

Preferably, referring to fig. 1 and 5, the driving assembly 400 includes a cylinder driving member, and the cylinder driving member includes: the cylinder body 410 is rotatably connected between the first rotating rod 311 and the second rotating rod 312, and one end of the piston rod 420, which is far away from the cylinder body 410, is rotatably connected between the fifth rotating rod 331 and the sixth rotating rod 332. For example, on the cylinder driving piece set up folding assembly 300, cylinder driving piece direct action was on folding assembly 300, and the atress is more direct, compares in gear drive, can avoid the dead phenomenon of card, does not need complicated drive mechanism, and simple structure is effective, and the atress is smooth-going and the holding capacity is big.

This embodiment simple structure can realize the drive to folding assembly 300 through the cylinder driving piece, and then realizes folding assembly 300's automatic rising and removes, and the atress is even, and the structure is steady, can the effective control folding assembly 300 the lift height, and then can realize the regulation to projection screen's height for realize the regulation to projection screen's size of a dimension.

Referring to fig. 3 and 4, a first fixing base 430 is connected to the cylinder body 410, the cylinder body 410 is fixedly connected to the first connecting member 310 through the first fixing base 430, wherein the first fixing base 430 includes a first cylinder beam 431, a first U-shaped seat 432 and a first cylinder pivot 433, two ends of the first cylinder beam 431 are respectively fixedly connected to the first rotating rod 311 and the second rotating rod 312, the first U-shaped seat 432 is disposed on the first cylinder beam 431, and the cylinder body 410 is rotatably connected to the first U-shaped seat 432 through the first cylinder pivot 433. The piston rod 420 is connected with a second fixing seat 440, the piston rod 420 is fixedly connected with the third connecting member 330 through the second fixing seat 440, wherein the second fixing seat 440 includes a second cylinder cross beam 441, a second U-shaped seat 442 and a second cylinder pivot 443, two ends of the second cylinder cross beam 441 are respectively fixedly connected with the fifth rotating rod 331 and the sixth rotating rod 332, the second U-shaped seat 442 is disposed on the second cylinder cross beam 441, and the piston rod 420 is far away from the cylinder body 410 and is rotatably connected to the second U-shaped seat 442 through the second cylinder pivot 443. In this embodiment, the driving assembly 400 can swing along the supporting space (the sandwiched space between the first supporting portion 100 and the second supporting portion 200) under the driving of the folding assembly 300 through the first fixing seat 430 and the second fixing seat 440, and can make the structure stable and the stress uniform.

A display device, wherein the display device comprises the lifting mechanism as described in the above embodiments. Therefore, the display device can have all the structural characteristics and beneficial effects of the lifting mechanism, and the description is omitted.

Referring to fig. 7, a display device includes a lifting mechanism, a screen base 500, a screen 700, a lifting mechanism, and a winding mechanism 600, where the lifting mechanism and the winding mechanism 600 are disposed on the screen base 500, one end of the screen 700 is connected to the winding mechanism 600, and the other end is connected to the lifting mechanism. Wherein, the screen 700 is fixedly connected with the second supporting part 200 of the lifting mechanism through the screen upper cover 800.

Referring to fig. 8, the screen 700 is driven by the lifting mechanism to rise, and the screen 700 is smoothly opened by the lifting mechanism.

Referring to fig. 10 and 11, the screen 700 is driven by the lifting mechanism to descend, and the screen 700 is flatly folded by the lifting mechanism and the rolling mechanism 600. At this time, the screen 700 is wound around the spool shaft of the winding mechanism 600, and the lifting mechanism can be completely accommodated in the screen base 500 by combining the swing of the folding assembly 300 and the driving assembly 400, and the screen upper cover 800 of the screen 700 is attached to the top end of the screen base 500.

To sum up, the utility model provides a lifting mechanism and a display device, wherein, the lifting mechanism comprises a first supporting part, a second supporting part, a folding component and a driving component, the second supporting part and the first supporting part form a supporting space for supporting a screen, one end of the folding component is connected with the first supporting part, the other end is connected with the second supporting part, and the driving component is movably arranged on the folding component; the folding assembly is driven by the driving assembly to extend and fold, so that the second supporting part is driven to move relative to the first supporting part to realize the extension and the contraction of the screen, and the driving assembly is driven by the folding assembly to swing along the supporting space. The utility model discloses well folding assembly extends and folds through the drive assembly drive, can effectively realize the extension and the shrink of screen, guarantees that the screen is stable smooth-going when going up and down to the movable setting of drive assembly can save occupation space when realizing the drive folding assembly on folding assembly, realizes projection screen equipment miniaturation when can realizing large-size screen projection effect, simple structure, and the practicality is strong.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention, and any modifications, equivalents, improvements, etc. made within the spirit and principles of the present invention should be included within the scope of the present invention.

Claims (10)

1. An elevating mechanism for elevating a projection screen, comprising:

a first support section;

a second support part forming a support space with the first support part for supporting a screen;

one end of the folding assembly is connected with the first supporting part, and the other end of the folding assembly is connected with the second supporting part;

a drive assembly movably disposed on the folding assembly;

the folding assembly is driven by the driving assembly to extend and fold, so that the second supporting part is driven to move relative to the first supporting part to extend and retract the screen, and the driving assembly is driven by the folding assembly to swing along the supporting space.

2. The lift mechanism of claim 1, wherein the folding assembly comprises: a first connecting member, a second connecting member, a third connecting member, and a fourth connecting member;

one end of the first connecting member is movably connected with the first supporting part, the middle part of the first connecting member is hinged with the middle part of the second connecting member, the other end of the first connecting member is hinged with one end of the third connecting member, the middle part of the third connecting member is hinged with the middle part of the fourth connecting member, and the other end of the third connecting member is movably connected with the second supporting part;

one end of the second connecting member is hinged with the first supporting part, the other end of the second connecting member is hinged with one end of the fourth connecting member, and the other end of the fourth connecting member is hinged with the second supporting part.

3. The lifting mechanism as claimed in claim 2, wherein one end of the first connecting member is rotatably connected to the first supporting portion, and one end of the first connecting member is slidably connected to the first supporting portion, and one end of the second connecting member is hingedly connected to the first supporting portion;

the other end of the third connecting member is rotatably connected with the second supporting part, the other end of the third connecting member is connected with the second supporting part in a sliding mode, and the other end of the fourth connecting member is hinged with the second supporting part.

4. The lifting mechanism according to claim 3, wherein the first connecting member includes a first rotating rod and a second rotating rod, the second connecting member includes a third rotating rod and a fourth rotating rod, the third connecting member includes a fifth rotating rod and a sixth rotating rod, the fourth connecting member includes a seventh rotating rod and an eighth rotating rod, the first rotating rod is connected to the third rotating rod to form a first X-shaped folding structure, the second rotating rod is connected to the fourth rotating rod to form a second X-shaped folding structure, and the first X-shaped folding structure is arranged in parallel with the second X-shaped folding structure.

5. The lift mechanism of claim 4, wherein the first linkage member further comprises a first roller assembly comprising:

the first roller body is positioned between the first rotating rod and the second rotating rod;

first pivot, first pivot articulate respectively in first dwang and second dwang, first roll the roller body pass through first pivot with first supporting part sliding connection, just be provided with on the first supporting part with first pivot complex first slide rail.

6. The lift mechanism of claim 4, wherein the third connecting member further comprises a second roller assembly, the second roller assembly comprising:

the second roller body is positioned between the fifth rotating rod and the sixth rotating rod;

the second pivot is hinged to the fifth rotating rod and the sixth rotating rod respectively, the second roller body is connected with the second supporting portion in a sliding mode through the second pivot, and a second sliding rail matched with the second pivot is arranged on the second supporting portion.

7. The lift mechanism of claim 4, wherein one end of the drive assembly is disposed between one end of the first link member and the first link member middle portion and the other end of the drive assembly is disposed between the third link member middle portion and the third link member other end.

8. The lift mechanism of claim 7, wherein the drive assembly is disposed in a sandwich between the first X-fold configuration and the second X-fold configuration.

9. The lift mechanism of claim 8, wherein the drive assembly includes a cylinder drive, the cylinder drive including:

the cylinder body is rotatably connected between the first rotating rod and the second rotating rod;

and the piston rod is movably connected with the cylinder body, and one end, far away from the cylinder body, of the piston rod is rotatably connected between the fifth rotating rod and the sixth rotating rod.

10. A display device, characterized in that the display device comprises a lifting mechanism according to any of claims 1-9.

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