CN214846216U

CN214846216U - Electric floor-pulling projection screen

Info

Publication number: CN214846216U
Application number: CN202121059866.1U
Authority: CN
Inventors: 萧毅; 郭锦波; 秦文君
Original assignee: Guangzhou Xiongyun Audiovisual Equipment Co ltd
Current assignee: Guangzhou Xiongyun Audiovisual Equipment Co ltd
Priority date: 2021-05-18
Filing date: 2021-05-18
Publication date: 2021-11-23
Anticipated expiration: 2031-05-18

Abstract

The utility model is used in the field of projection screen, especially relates to an electric floor-pulling projection screen, which comprises at least two expansion brackets, wherein each expansion bracket is provided with a driving end and a driven end, and the driving ends of two adjacent expansion brackets are connected through a tension spring; the first reel pipe is arranged on the side edge of the telescopic frame, and a power part for driving the first reel pipe to rotate is arranged in the first reel pipe; first curtain, one end and first winding union coupling, the other end is connected with the driven end of expansion bracket, expansion bracket atress expansion props up first curtain, when needs are with the rolling of first curtain, power component drives first winding pipe and rotates, in order to roll up first curtain on first reel, next time need prop up first curtain, directly with the power component reversal, the extension spring can pull the expansion bracket expansion under the effect of self resilience force this moment and prop up first curtain, this kind of projection curtain is owing to combine the rolling of the first curtain of control or prop up with power component and extension spring, so use convenient and fast more.

Description

Electric floor-pulling projection screen

Technical Field

The utility model is used for the projection curtain field especially relates to an electronic floor-mounted projection curtain.

Background

The existing projection screen generally adopts a manual structure, usually, the screen is rolled and pulled manually, and the use is inconvenient.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve one of the technical problem that exists among the prior art at least, provide an electronic floor-mounted projection curtain, can realize drawing the curtain automatically and roll up the curtain, use convenient and fast.

The utility model provides a technical scheme that its technical problem adopted is: an electric floor-pulling projection screen comprises

The telescopic frames are at least two, each telescopic frame is provided with a driving end and a driven end, the driving ends of two adjacent telescopic frames are connected through tension springs, and the tension springs apply force for expanding the telescopic frames;

the first reel pipe is arranged on the side edge of the telescopic frame, and a power part for driving the first reel pipe to rotate is arranged in the first reel pipe;

one end of the first curtain is connected with the first winding pipe, and the other end of the first curtain is connected with the driven end of the telescopic frame.

The technical scheme at least has the following advantages or beneficial effects: the extension spring exerts the force to the expansion bracket, the expansion bracket atress expansion props up first curtain, when needs are with first curtain rolling, start power pack, power pack drives first reelpipe and rotates, with roll up first curtain on first reelpipe, because the expansion bracket is carried out the shrink when first curtain is rolled up on first reelpipe, and the expansion bracket shrink can stretch the extension spring, when following time need prop up first curtain, directly reverse power pack, the extension spring can be pulled the expansion bracket expansion under the effect of self resilience power at this moment in order to prop up first curtain, this kind of projection curtain is owing to combine the rolling or the strutting of the first curtain of control with power pack and extension spring, so use convenient and fast more.

Further conduct the utility model discloses technical scheme's improvement, on the expansion bracket with one side that first curtain is relative is equipped with the second curtain, the expansion bracket side is equipped with the second reelpipe, the inside wind spring that is equipped with of second reelpipe, the one end of second curtain with the second reelpipe is connected, the other end with the driven end of expansion bracket is connected.

Further conduct the utility model discloses technical scheme's improvement, expansion bracket one end is equipped with the roof, the expansion bracket other end is equipped with the bottom plate, the expansion bracket includes two intercrossing articulated connecting rods, one of them the both ends of connecting rod respectively with the roof with the bottom plate rotates to be connected, another the both ends of connecting rod respectively with the roof with bottom plate sliding connection, connecting rod sliding connection be in the one end of bottom plate with the extension spring is connected.

Further as the utility model discloses technical scheme's improvement, the roof with the slide rail is all installed to the opposite side of bottom plate, to sliding connection the roof with the bottom plate the connecting rod, its both ends are respectively through the pulley assembly in each in the slide rail.

Further conduct the utility model discloses technical scheme's improvement, adjacent two through same between the slip end of connecting rod the extension spring is connected.

Further conduct the utility model discloses technical scheme's improvement, be equipped with a plurality ofly on the bottom plate the extension spring, every the slip end of connecting rod corresponds and connects one the one end of extension spring, should the other end of extension spring with the bottom plate is connected.

Further conduct the utility model discloses technical scheme's improvement, it detains to be equipped with the regulation on the bottom plate, it has a plurality of edges to adjust to detain the blend stop of the flexible direction interval arrangement of extension spring, the extension spring with the blend stop buckle is connected.

Further conduct the utility model discloses technical scheme's improvement still includes stay cord and fixed pulley, the fixed pulley is installed on the bottom plate and be located the slide rail is kept away from the one end of extension spring states the stay cord and walks around the fixed pulley, the one end of stay cord with the extension spring is connected, the other end with the slip end of connecting rod is connected.

Further conduct the utility model discloses technical scheme's improvement, the stay cord with the buckle is connected between the extension spring.

Further conduct the utility model discloses technical scheme's improvement, the support is all installed at the both ends of bottom plate, first reelpipe both ends are fixed two between the support, the both ends of second reelpipe are fixed two between the support.

Drawings

The present invention will be further explained with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the internal structure of the embodiment shown in FIG. 1;

FIG. 3 is an exploded view of the embodiment of FIG. 1;

FIG. 4 is a schematic diagram of a portion of the structure of the embodiment shown in FIG. 1;

FIG. 5 is a schematic view of the same tension spring disposed between the two outrigger supports in the embodiment of FIG. 1;

fig. 6 is a schematic structural diagram of a dual-curtain projection screen according to an embodiment of the present invention;

FIG. 7 is an exploded view of the embodiment of FIG. 6;

FIG. 8 is a schematic diagram of a portion of the structure of the embodiment shown in FIG. 6;

FIG. 9 is a schematic view of the embodiment of FIG. 6 with two tension springs disposed between the two telescoping racks;

FIG. 10 is an enlarged view of a portion of FIG. 8 at A;

fig. 11 is a schematic structural diagram of an expansion bracket according to an embodiment of the present invention.

Detailed Description

This section will describe in detail the embodiments of the present invention, preferred embodiments of the present invention are shown in the attached drawings, which are used to supplement the description of the text part of the specification with figures, so that one can intuitively and vividly understand each technical feature and the whole technical solution of the present invention, but they cannot be understood as the limitation of the protection scope of the present invention.

In the present invention, if there is a description of directions (up, down, left, right, front and back), it is only for convenience of description of the technical solution of the present invention, and it is not intended to indicate or imply that the technical features indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the utility model, the meaning of a plurality of is one or more, the meaning of a plurality of is more than two, and the meaning of more than two is understood as not including the number; the terms "above", "below", "within" and the like are understood to include the instant numbers. In the description of the present invention, if there is any description of "first" and "second" only for the purpose of distinguishing technical features, it is not to be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the precedence of the indicated technical features.

In the present invention, unless otherwise explicitly defined, the terms "set", "install", "connect", and the like are to be understood in a broad sense, and for example, may be directly connected or may be indirectly connected through an intermediate medium; can be fixedly connected, can also be detachably connected and can also be integrally formed; may be mechanically coupled, may be electrically coupled or may be capable of communicating with each other; either as communication within the two elements or as an interactive relationship of the two elements. The technical skill in the art can reasonably determine the specific meaning of the above words in the present invention by combining the specific contents of the technical solution.

Referring to fig. 1-4, the utility model provides an electronic floor-pulling projection curtain, it mainly includes expansion bracket 1, first reelpipe 2 and first curtain 3, wherein expansion bracket 1 is equipped with two at least, expansion bracket 1 has drive end and driven end, connect through extension spring 4 between the drive end of two adjacent expansion brackets 1, extension spring 4 exerts the power that makes expansion bracket 1 expand, first reelpipe 2 is established at the side of expansion bracket 1, be equipped with the first reelpipe 2 pivoted power component 200 of drive in the first reelpipe 2, the one end and the first reelpipe 2 of first curtain 3 are connected, the other end is connected with the driven end of expansion bracket 1.

Tension spring 4 exerts force to the drive end of expansion bracket 1, drive end forced motion, make the driven end of expansion bracket 1 rise in order to prop up first curtain cloth 3, when needs are with the rolling of first curtain cloth 3, start power unit 200, power unit 200 drives first coil of pipe 2 and rotates, in order to roll up first curtain cloth 3 on first coil of pipe 2, because expansion bracket 1 is carried out the shrink when first curtain cloth 3 rolls up on first coil of pipe 2, and expansion bracket 1 shrink can stretch tension spring 4, when needing to prop up first curtain cloth 3 next time, reverse power unit 200, tension spring 4 can stimulate expansion bracket 1 expansion under the effect of self resilience power at this moment and prop up first curtain cloth 3, this kind of projection curtain is owing to control the rolling or the strutting of first curtain cloth 3 with power unit 200 and tension spring 4 combination, so use convenient and fast more.

Referring to fig. 1, 2 and 3, one end of the telescopic frame 1 is provided with a top plate 100, the other end of the telescopic frame 1 is provided with a bottom plate 103, the telescopic frame 1 comprises two connecting rods 101 which are hinged to each other in a crossing manner, two ends of one of the connecting rods 101 are respectively rotatably connected with the top plate 100 and the bottom plate 103, two ends of the other connecting rod 101 are respectively slidably connected with the top plate 100 and the bottom plate 103, and the connecting rod 101 is slidably connected with one end of the bottom plate 103 and connected with the tension spring 4.

The opposite sides of the top plate 100 and the bottom plate 103 are each mounted with a slide rail 105, and both ends of the link 101 slidably connecting the top plate 100 and the bottom plate 103 are fitted in the respective slide rails 105 via pulleys, respectively.

In the present application, the driving end of the telescopic frame 1 is the end of the connecting rod 101 slidably connected to the bottom plate 103, i.e. the bottom end of the telescopic frame 1, and the driven end of the telescopic frame 1 is the end of the telescopic frame 1 which is lifted, i.e. the top end of the telescopic frame 1.

When rolling up first curtain 3, power component 200 drives first reelpipe 2 and rotates, make first curtain 3 roll up first reelpipe 2 on, simultaneously under the pulling of first curtain 3, be used for gliding both ends of connecting rod 101 to slide right in slide rail 105, another connecting rod 101 is then followed, make two connecting rods 101 intercrossing coincide, when needing to pull up first curtain 3, power component 200 counter-rotation, under the resilience force of extension spring 4, the both ends of connecting rod 101 slide left in slide rail 105, another connecting rod 101 is then followed, make two connecting rods 101 intercrossing stand, thereby make first curtain 3 pull up.

Referring to fig. 11, it should be noted that the connecting rod 101 of the present invention includes two straight rods 102 with two ends hinged to each other, and the middle of the straight rod 102 of each connecting rod 101 is hinged through a rotating shaft.

Referring to fig. 3 and 5, in some embodiments, the sliding ends of two adjacent connecting rods 101 are connected by the same tension spring 4, that is, the sliding ends of the two connecting rods 101 are pulled oppositely by the same tension spring 4, when the first screen 3 is rolled up, the sliding ends of the two connecting rods 101 simultaneously apply tension to the two ends of the tension spring 4, so that the tension spring 4 is stretched, and when the first screen 3 needs to be pulled up, the sliding ends of the connecting rods 101 slide leftwards under the action of the resilience force of the tension spring 4, so as to drive the connecting rods 101 and the driven rods 102 to support the screen.

Referring to fig. 4, 8 and 9, in other embodiments, a plurality of tension springs 4 are disposed on the base plate 103, one end of each tension spring 4 is connected to the sliding end of each link 101, and the other end of each tension spring 4 is connected to the base plate 103, in the embodiment shown in fig. 8, two tension springs 4 are disposed on the base plate 103, each tension spring 4 corresponds to one expansion bracket 1, when the curtain is rolled, each tension spring 4 is driven by the sliding end of the corresponding link 101 to stretch, and when the curtain is pulled, each tension spring 4 pulls the sliding end of the corresponding link 101 under the action of the resilience force to support the link 101 and the driven rod 102.

In other embodiments, the present application further comprises a pulling rope 6 and a fixed pulley 7, the fixed pulley 7 is mounted on the bottom plate 103 and is located at one end of the slide rail 105 far away from the tension spring 4, the pulling rope 6 passes around the fixed pulley 7, one end of the pulling rope 6 is connected with the tension spring 4, and the other end of the pulling rope 6 is connected with the sliding end of the connecting rod 101.

Specifically, see fig. 2-9, the downside of each expansion bracket 1 all is equipped with a slide rail 105 of fixing on bottom plate 103, and slide rail 105 extends along the length direction of bottom plate 103, and the one end of connecting rod 101 is passed through the gyro wheel assembly in slide rail 105, when connecting through same extension spring 4 between two expansion brackets 1, extension spring 4 establishes between two slide rails 105, and fixed pulley 7 is fixed on bottom plate 103 and is located slide rail 105 and keeps away from the one end of extension spring 4, in order to guarantee to keep level between stay cord 6 and the slide rail 105, the utility model discloses in, fixed pulley 7 aligns with slide rail 105, and the one end and the extension spring 4 of stay cord 6 are connected, and the other end is connected with the sliding end of connecting rod 101 after bypassing fixed pulley 7.

Referring to fig. 8 and 9, when the two expansion brackets 1 are connected through two tension springs 4, two tension springs 4 are arranged between the two expansion brackets 1, each tension spring 4 is correspondingly connected with one expansion bracket 1, specifically, one end of each tension spring 4 is connected with the bottom plate 103, and the other end of each tension spring 4 is connected with the sliding end of the corresponding connecting rod 101 by bypassing the fixed pulley 7.

It should be noted that, in the embodiment of disposing two extension springs 4 between two expansion brackets 1, the positions of two extension springs 4 are not aligned with the slide rail 105, but are located on both sides of the slide rail 105, and the fixed pulley 7 is aligned with the slide rail 105, if the pull rope 6 is directly connected to the sliding end of the connecting rod 101 by passing around the fixed pulley 7, the pull rope 6 is obliquely wound on the fixed pulley 7, in order to avoid the pull rope 6 from obliquely winding on the fixed pulley 7, in the present invention, two rotating wheels are disposed on the side of the fixed pulley 7, one rotating wheel is aligned with the extension spring 4, the other rotating wheel is aligned with the fixed pulley 7, and the two rotating wheels are also aligned, so that the pull rope 6 can be kept in the forward direction in the groove of the fixed pulley 7 without inclination when passing around the two rotating wheels and then winding on the fixed pulley 7.

Furthermore, referring to fig. 4, the utility model discloses in, the buckle is connected between stay cord 6 and the extension spring 4, and is concrete, and the one end that extension spring 4 is used for connecting stay cord 6 is equipped with the trip, and the one end that stay cord 6 is used for connecting extension spring 4 is equipped with the snap ring, during the use, directly with the trip with the snap ring be connected can, convenient equipment, dismantlement and change.

Referring to fig. 5 and 6, in some embodiments, a second curtain 5 is installed on the opposite side of the telescopic frame 1 to the first curtain 3, a second roller pipe 106 is installed on the side of the telescopic frame 1, a coil spring 107 is installed inside the second roller pipe 106, one end of the second curtain 5 is connected to the second roller pipe 106, and the other end is connected to the driven end of the telescopic frame 1, so that a double-curtain structure is formed, and the utilization area of the curtain is larger.

When the curtain is stretched, the second curtain 5 can be pulled up under the stretching action of the telescopic frame 1, meanwhile, the pulled-up second curtain 5 can drive the coil spring 107 to tighten, and when the curtain is rolled up, the second curtain 5 can be automatically rolled up on the second reel pipe 106 under the effect of the resilience force of the coil spring 107.

It can be understood that the first curtain 3 and the second curtain 5 can be disposed at both sides of the telescopic frame 1 oppositely pulled by the same tension spring 4, and also can be disposed at both sides of the telescopic frame 1 respectively connected by two tension springs 4, thereby forming a double-sided projection curtain.

Similarly, the first curtain 3 is provided on one side of the telescopic frame 1 which is pulled in opposite directions by the same tension spring 4, or the first curtain 3 is provided on one side of the telescopic frame 1 which is connected by two tension springs 4, respectively, thereby forming a single-sided projection screen.

Further, referring to fig. 8 and 10, an adjusting buckle 8 is arranged on the bottom plate 103, the adjusting buckle 8 is provided with a plurality of barrier strips 70 arranged at intervals along the extension direction of the tension spring 4, the tension spring 4 is connected with the barrier strips 70 in a buckling manner, the tightness of the tension spring 4 can be adjusted through the adjusting buckle 8, the tension spring 4 can be loosened after being used for a long time, and thus the tension spring 4 can be buckled on one barrier strip 70 which is farther, so that the tension spring 4 is kept tensioned, and sufficient force is provided for supporting the telescopic frame 1.

Referring to fig. 2 and 6, brackets 108 are mounted at both ends of the bottom plate 103, the first coil pipe 2 is fixed between the two brackets 108 at both ends, and the second coil pipe 106 is fixed between the two brackets 108 at both ends.

In addition, as shown in fig. 3, a front baffle 120, a rear baffle 124, a left baffle 121, a right baffle 123 and an upper baffle 126 are further mounted on the bottom plate 103, so as to form a box body, wherein the upper baffle 126 is provided with an avoiding groove 127 formed along the length direction, the avoiding groove 127 provides an access channel for the expansion bracket 1 and the first curtain 3 on one hand, and can be matched with the top plate 100 on the other hand, when the first curtain 3 is rolled, the top plate 100 can seal the avoiding groove 127, so as to prevent external impurities from entering the box body.

Of course, for the double-sided projection screen, the escape slot 130 provides an access way for the telescopic frame 1, the first screen 3 and the second screen 5.

Of course, the present invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.

Claims

1. The utility model provides an electronic ground draws projection screen which characterized in that: comprises that

The telescopic frames (1) are at least provided in two, each telescopic frame (1) is provided with a driving end and a driven end, the driving ends of two adjacent telescopic frames (1) are connected through a tension spring (4), and the tension springs (4) apply force for expanding the telescopic frames (1);

the first reel pipe (2) is arranged on the side edge of the telescopic frame (1), and a power component (200) for driving the first reel pipe (2) to rotate is arranged in the first reel pipe (2);

one end of the first curtain (3) is connected with the first winding pipe (2), and the other end of the first curtain is connected with the driven end of the telescopic frame (1).

2. The electric floor-driven projection screen of claim 1, wherein: the utility model discloses a curtain, including expansion bracket (1), first curtain (3) relative one side is equipped with second curtain (5) on the expansion bracket (1), expansion bracket (1) side is equipped with second reelpipe (106), second reelpipe (106) inside is equipped with wind spring (107), the one end of second curtain (5) with second reelpipe (106) are connected, the other end with the driven end of expansion bracket (1) is connected.

3. The electric floor-driven projection screen of claim 2, wherein: expansion bracket (1) one end is equipped with roof (100), expansion bracket (1) other end is equipped with bottom plate (103), expansion bracket (1) includes two intercrossing articulated connecting rods (101), one of them the both ends of connecting rod (101) respectively with roof (100) with bottom plate (103) rotate to be connected, another the both ends of connecting rod (101) respectively with roof (100) with bottom plate (103) sliding connection, connecting rod (101) sliding connection be in the one end of bottom plate (103) with extension spring (4) are connected.

4. The electric floor-driven projection screen of claim 3, wherein: slide rails (105) are mounted on opposite sides of the top plate (100) and the bottom plate (103), and two ends of the connecting rod (101) which is connected with the top plate (100) and the bottom plate (103) in a sliding mode are respectively assembled in the slide rails (105) through pulleys.

5. The electric floor-driven projection screen of claim 4, wherein: the sliding ends of two adjacent connecting rods (101) are connected through the same tension spring (4).

6. The electric floor-driven projection screen of claim 4, wherein: the bottom plate (103) is provided with a plurality of tension springs (4), each sliding end of the connecting rod (101) is correspondingly connected with one end of each tension spring (4), and the other end of each tension spring (4) is connected with the bottom plate (103).

7. The electric floor-driven projection screen of claim 6, wherein: be equipped with on bottom plate (103) and adjust knot (8), adjust knot (8) and have a plurality of edges blend stop (70) that extension spring (4) flexible direction interval was arranged, extension spring (4) with blend stop (70) buckle is connected.

8. The electric floor-driven projection screen of claim 5 or 6, wherein: still include stay cord (6) and fixed pulley (7), fixed pulley (7) are installed bottom plate (103) are gone up and are located slide rail (105) are kept away from the one end of extension spring (4), stay cord (6) are walked around fixed pulley (7), the one end of stay cord (6) with extension spring (4) are connected, the other end with the slip end of connecting rod (101) is connected.

9. The electric floor-driven projection screen of claim 8, wherein: the pull rope (6) is connected with the tension spring (4) in a buckling mode.

10. The electric floor-driven projection screen of claim 3, wherein: supports (108) are mounted at two ends of the bottom plate (103), two ends of the first reel pipe (2) are fixed between the two supports (108), and two ends of the second reel pipe (106) are fixed between the two supports (108).