CN215769341U

CN215769341U - Hovering type ground curtain

Info

Publication number: CN215769341U
Application number: CN202122280751.1U
Authority: CN
Inventors: 容志军; 叶雪敏
Original assignee: Guangdong Aikemei Technology Co ltd
Current assignee: Guangdong Aikemei Technology Co ltd
Priority date: 2021-09-18
Filing date: 2021-09-18
Publication date: 2022-02-08
Anticipated expiration: 2031-09-18

Abstract

The present invention provides a hovering ground curtain, comprising: take in frame, curtain mechanism and elevating system. The containing machine base comprises a base box and an upper cover, the base box is provided with a containing cavity and an open slot, and the open slot of the base box is covered by the upper cover. The curtain mechanism includes: curtain, wind-up roll and wind spring subassembly, the one end and the wind-up roll fixed connection of curtain, the other end and upper cover fixed connection. The wind-up roll is rotatably arranged in the containing cavity of the base box, the coil spring assembly is contained in the wind-up roll, the wind-up roll is connected with the base box through the coil spring assembly, and the coil spring assembly stores force and automatically winds. The lifting mechanism is connected with the base box and the upper cover and can extend out of the base box from the open slot under the driving of the upper cover; the lifting mechanism comprises two folding assemblies and an air cylinder assembly which are symmetrically arranged, and the air cylinder assembly is connected with the folding assemblies and the base box. The hovering type ground curtain can be pulled up to any height, and the actual use requirement is met.

Description

Hovering type ground curtain

Technical Field

The utility model relates to the technical field of projection equipment, in particular to a hovering type ground curtain.

Background

The projection curtain is widely used in the industries of advertisement, teaching, propaganda, literature and art and the like, is matched with a projector to perform various video demonstration, and plays a great role in information transmission.

Traditional projection curtain is fixed to be hung on the wall, generally can not remove, compares in suspension type projection curtain, and ground draw formula projection curtain receives the restriction in place less on the use, and its application is also fairly extensive. The floor-pulling type projection screen (hereinafter referred to as floor-pulling screen) needs to be supported after being pulled up, and the traditional supporting mode adopts locking structures such as buckles and the like to lock, so that the floor-pulling screen is kept in a supporting state. However, this kind of support mode usually needs the ground to draw the curtain to draw to can the locking after the appointed height, leads to the ground to draw the curtain to be unable to draw to fix after the suitable position according to actual conditions like this, has restricted the use that the ground draws the curtain.

Therefore, how to design a hovering ground curtain to enable the curtain of the ground curtain to be pulled to any height so as to meet the requirement of practical use is a technical problem to be solved by technical personnel in the field.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects in the prior art and provide a hovering ground curtain, so that the curtain of the ground curtain can be raised to any height to meet the requirement of practical use.

The purpose of the utility model is realized by the following technical scheme:

a hovering ground curtain comprising: the device comprises a containing base, a curtain mechanism and a lifting mechanism;

the containing machine base comprises a base box and an upper cover, the base box is provided with a containing cavity and an open slot, and the upper cover covers the open slot of the base box; the curtain mechanism and the lifting mechanism can be accommodated in the accommodating cavity;

the curtain mechanism includes: the curtain comprises a curtain, a wind-up roll and a coil spring assembly, wherein one end of the curtain is fixedly connected with the wind-up roll, the other end of the curtain is fixedly connected with the upper cover, and the curtain is wound on the wind-up roll; the wind-up roll is rotatably arranged in the containing cavity of the base box, the coil spring assembly is contained in the wind-up roll, the wind-up roll is connected with the base box through the coil spring assembly, and the coil spring assembly accumulates force and automatically winds up the wind-up roll;

the lifting mechanism is connected with the base box and the upper cover and can be driven by the upper cover to extend out of the base box from the open slot; the lifting mechanism comprises two folding assemblies and air cylinder assemblies which are symmetrically arranged, and the air cylinder assemblies are connected with the folding assemblies and the base box.

In one embodiment, the folding assembly comprises a first rod body and a second rod body, one end of the first rod body is hinged to one end of the second rod body, and the other end of the first rod body is rotatably arranged on the base box and is accommodated in the accommodating cavity; the other end of the second rod body is rotatably arranged on the upper cover.

In one embodiment, the cylinder assembly comprises: the piston is slidably arranged in the cylinder, one end of the cylinder is rotatably connected to the first rod body, one end of the piston rod is connected with the piston, and the other end of the piston rod is rotatably arranged on the base box.

In one embodiment, the first rod and the second rod are hinged through a connecting component;

the connecting assembly includes: the connecting rod comprises a first connecting piece, a second connecting piece and a connecting shaft, wherein the first connecting piece is arranged at one end of the first rod body, and the second connecting piece is arranged at one end of the second rod body; the connecting shaft is arranged in the limiting cavity in a penetrating mode, and the connecting shaft penetrates through the limiting cavity and the clamping plate.

In one embodiment, the first connecting member and the second connecting member are respectively and fixedly mounted on the first rod body and the second rod body through bolts.

In one embodiment, the coil spring assembly comprises: the winding device comprises a fixing seat, a winding spring shaft and a winding spring, wherein the fixing seat is fixedly arranged on the base box, one end of the winding spring shaft is fixedly inserted on the fixing seat, the winding roller is sleeved on the winding spring shaft, and the winding spring is connected with the winding spring shaft and the winding roller.

In one embodiment, the curtain mechanism comprises a shaping pull rope, the shaping pull rope is connected with the upper cover and the winding roller, the shaping pull rope is arranged on two sides of the curtain, and the shaping pull ropes on the two sides are respectively connected with the curtain.

In one embodiment, the winding roller is provided with a fixing screw, and one end of the shaping pull rope is wound on the fixing screw.

In one embodiment, the curtain is provided with connecting ends at two sides, the connecting ends are provided with rope winding through holes, and the shaping pull rope is arranged in the rope winding through holes in a penetrating mode.

In one embodiment, the base box is further provided with a support leg.

In conclusion, the hovering type ground curtain can be pulled up to any height, and the actual use requirement is met.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural view of a hovering ground curtain according to the present invention in a retracted state;

FIG. 2 is an exploded schematic view of the hovering ground curtain shown in FIG. 1;

FIG. 3 is a schematic structural view of the hovering ground curtain of the present invention in an expanded state;

FIG. 4 is a schematic view of a lifting mechanism of the hovering curtain;

FIG. 5 is a plan view of the lift mechanism shown in FIG. 4;

FIG. 6 is a schematic structural view of the connecting assembly;

FIG. 7 is an exploded view of the connection assembly shown in FIG. 6;

FIG. 8 is an enlarged view taken at A of FIG. 5;

FIG. 9 is a schematic structural view of the coil spring assembly shown in FIG. 2;

FIG. 10 is a schematic view of the fitting relationship between the shaping rope and the wind-up roll;

fig. 11 is an enlarged view of fig. 5 at B.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The utility model provides a hovering type ground pulling curtain 10, aiming at enabling a curtain of the ground pulling curtain to be pulled up to any height so as to meet the requirement of practical use. As shown in fig. 1 and 2, the hovering-type ground curtain 10 includes: a receiving base 100, a curtain mechanism 200, and a lifting mechanism 300 (shown in fig. 4).

As shown in fig. 2, the receiving base 100 includes a base box 110 and an upper cover 120, the base box 110 is provided with a receiving cavity (not shown) and an opening groove 111, and the upper cover 120 covers the opening groove 111 of the base box 110. The curtain mechanism 200 and the lifting mechanism 300 can be accommodated in the accommodating cavity.

As shown in fig. 2 and 3, the curtain mechanism 200 includes: the curtain 210, the wind-up roll 220 and the coil spring assembly 230, one end of the curtain 210 is fixedly connected with the wind-up roll 220, the other end is fixedly connected with the upper cover 120, and the curtain 210 is wound on the wind-up roll 220. The wind-up roll 220 is rotatably arranged in the accommodating cavity of the base box 110, the coil spring assembly 230 is accommodated in the wind-up roll 220, the wind-up roll 220 is connected with the base box 110 through the coil spring assembly 230, and the coil spring assembly 230 is automatically wound up under the action of force, so that the coil spring assembly 230 can drive the wind-up roll 220 to rotate and wind up the curtain 210.

As shown in fig. 4, the lifting mechanism 300 connects the base box 110 and the upper cover 120, and the lifting mechanism 300 can be driven by the upper cover 120 to extend out of the base box 110 from the opening groove 111. The lifting mechanism 300 includes two symmetrically disposed folding assemblies 310 and a cylinder assembly 320, and the cylinder assembly 320 connects the folding assemblies 310 and the base box 110.

The hovering ground curtain 10 of the present invention has a converging state and a spreading state, and when the hovering ground curtain 10 is not needed to be used, the converging state is reached, at this time, as shown in fig. 1, the lifting mechanism 300 and the curtain mechanism 200 are both accommodated in the base box 110, and the upper cover 120 covers the opening groove 111 of the base box 110; when projection is needed, the upper cover 120 is pulled up, and the lifting mechanism 300 and the curtain 210 also extend out of the base box 110 along with the upper cover 120 from the opening groove 111, and at this time, as shown in fig. 3, the hovering curtain 10 is in an expanded state. During the opening of the curtain 210, the cylinder assembly 320 supports the folding assembly 310, so that the folding assembly 310 can stably maintain the current state regardless of the state of the folding assembly 310, and the upper cover 120 and the curtain 210 can be suspended at the current position without external force, and the specific working principle will be explained below.

The following describes a specific structure of the hovering-type ground curtain 10 according to the present invention with reference to the present embodiment:

in this embodiment, as shown in fig. 5, the folding assembly 310 includes a first rod 311 and a second rod 312, one end of the first rod 311 is hinged to one end of the second rod 312, the other end of the first rod 311 is rotatably disposed on the base box 110 and is accommodated in the accommodating cavity, and the other end of the second rod 312 is rotatably disposed on the upper cover 120.

In this embodiment, as shown in fig. 6, the first rod 311 and the second rod 312 are hinged by a connecting component 330. As shown in fig. 7, the connection assembly 330 includes: the first connecting member 331 is disposed at one end of the first rod 311, and the second connecting member 332 is disposed at one end of the second rod 312. The second connecting member 332 is provided with a limiting cavity 334, the first connecting member 331 is provided with a clamping plate 335, the clamping plate 335 is accommodated in the limiting cavity 334, and the connecting shaft 333 penetrates through the limiting cavity 334 and the clamping plate 335. Preferably, the first connecting member 311 is fixedly mounted on the first rod 311 by a bolt 301, and the second connecting member 312 is fixedly mounted on the second rod 312 by the bolt 301. Thus, the first rod 311 and the second rod 312 can rotate relative to each other about the connecting shaft 333 as a rotation center.

Preferably, as shown in fig. 8, the cylinder assembly 320 includes: the cylinder 321, a piston (not shown) and a piston rod 322, the piston is slidably disposed in the cylinder 321, one end of the cylinder 321 is rotatably connected to the first rod 311, one end of the piston rod 322 is connected to the piston, and the other end of the piston rod 322 is rotatably disposed on the base box 110. In the implementation, the cylinder assembly 320 is a cylinder known to those skilled in the art, and the structure thereof is known in the prior art, so the structure thereof is not described herein again, and the cylinder assembly can be selected according to actual situations in the implementation.

In the present embodiment, as shown in fig. 9, the coil spring assembly 230 includes: the fixing seat 231, the spring winding shaft 232 and the coil spring 233, wherein the fixing seat 231 is fixedly installed on the base box 110, one end of the spring winding shaft 232 is fixedly inserted on the fixing seat 231, the coil roller 220 is sleeved on the spring winding shaft 232, and the coil spring 233 is connected with the spring winding shaft 232 and the coil roller 220. Thus, when the curtain 210 is pulled up, the wind-up roll 220 rotates to cause the coil spring 233 to deform and accumulate force; when the curtain 210 is lowered, the elastic force of the coil spring 233 drives the wind-up roller 220 to rotate, so that the curtain 210 is wound in the base box 110.

The operation principle of the hovering-type curtain 10 of the present invention is described below with reference to the above structure, and please refer to fig. 1, fig. 2, fig. 5 and fig. 8 together:

initially, the hovering ground curtain 10 is in a closed state, and the lifting mechanism 300 and the curtain mechanism 200 are both accommodated in the base box 110;

when projection is required, the upper cover 120 is pulled up, and the curtain 210 and the lifting mechanism 300 are also pulled up because the curtain 210 and the second rod 312 are connected to the upper cover 120. In the process of pulling, since the first rod 311 and the second rod 312 are hinged by the connecting component 330, the first rod 311 and the second rod 312 which are originally folded together will rotate relatively around the connecting shaft 333, that is, the included angle between the first rod 311 and the second rod 312 is increased. At the same time, the first rod 311 extends out from the receiving cavity of the base box 110, so that the cylinder assembly 320 is stretched, i.e. the piston slides in the cylinder 321, and the cylinder 321 and the piston rod 322 slide relatively under the pulling force of the first rod 311. After the upper cover 120 is pulled to a desired height, the pulling force acting on the upper cover 120 is removed, and at this time, the upper cover 120, the curtain 210 and the folding assembly 310 all have a downward trend under the action of gravity and the coil spring 233, but the cylinder assembly 320 provides a supporting force for the first rod 311 to overcome the gravity of the component itself and the elastic force of the coil spring 233 and keep the first rod at the current position, so that the folding assembly 310 keeps the current state, and the upper cover 120 and the curtain 210 do not descend to realize hovering, as shown in fig. 5;

when the curtain 210 needs to be retracted, a downward pressure is applied to the upper cover 120, and the downward pressure is transmitted to the first rod 311, so that the first rod 311 overcomes the resistance of the cylinder assembly 320 to be retracted, and thus, the included angle between the first rod 311 and the second rod 312 is reduced, so that the first rod 311 and the second rod 312 are folded together again and are accommodated in the accommodating cavity of the base box 110. As the first rod 311 and the second rod 312 are folded again, the cover 120 and the curtain 210 are lowered, and the curtain 210 is rewound on the wind-up roll 220 by the coil spring assembly 230. Finally, as shown in fig. 1, the curtain 210 and the lifting mechanism 300 are accommodated in the base box 110 again, and the upper cover 120 is covered at the opening groove 111.

It is noted that the piston in the cylinder assembly 320 is slidably disposed in the cylinder bore 321, and the sliding of the piston enables the piston rod 322 to extend and retract relative to the cylinder bore 321. However, the cylinder assembly 320 itself has some resistance, i.e., if the piston slides, it needs to overcome such resistance as friction and in-cylinder damping. In this manner, cylinder assembly 320 is capable of supporting folding assembly 310 on itself without being subjected to external forces, thereby allowing curtain 210 to hover at any location; only after external force (no matter tension or pressure), the piston can overcome resistance and slide, the length of the cylinder assembly 320 can be extended and contracted, and the folding assembly 310 can be supported or folded. Thus, the curtain 210 can be suspended at a desired position without additional fixing means.

In order to keep the curtain 210 flat during projection and avoid wrinkles from affecting the projection effect, in one embodiment, the hovering type curtain drawing mechanism 10 of the present invention is specially designed for the curtain mechanism 200, specifically:

the curtain mechanism 200 includes a shaping pulling rope 240, the shaping pulling rope 240 connects the upper cover 120 and the wind-up roll 220, the shaping pulling rope 240 is disposed on two sides of the curtain 210, and the shaping pulling ropes 240 on the two sides are respectively connected with the curtain 210. Preferably, as shown in fig. 10, a fixing screw 221 is provided on the wind-up roll 220, and one end of the shaping pull rope 240 is wound on the fixing screw 221. Further, as shown in fig. 11, two sides of the curtain 210 are provided with connecting ends 211, the connecting ends 211 are provided with rope winding through holes 212, and the shaping pulling rope 240 is inserted into the rope winding through holes 212. Like this, after curtain 210 is pulled up, because link 211 links together with design stay cord 240, then curtain 210 both sides receive the pulling force of design stay cord 240, and then make curtain 210 keep smooth, be difficult to appear the fold.

In one embodiment, the base box 110 is further provided with a support leg 111, as shown in fig. 3, the long side direction of the support leg 111 is perpendicular to the base box 110, so as to enhance the stability of the hovering type ground curtain 10 and avoid the phenomenon of shaking caused by the lifting of the center of gravity position after the curtain 210 is pulled up.

In summary, the hovering-type ground curtain 10 of the present invention can realize that the curtain 210 hovers at any position, so that the curtain 210 of the ground curtain can be raised to any height, thereby meeting the requirement of practical use.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A hovering ground curtain, comprising: the device comprises a containing base, a curtain mechanism and a lifting mechanism;

2. The hovering ground curtain according to claim 1, wherein the folding assembly comprises a first rod and a second rod, one end of the first rod is hinged to one end of the second rod, and the other end of the first rod is rotatably disposed on the base box and is accommodated in the accommodating cavity; the other end of the second rod body is rotatably arranged on the upper cover.

3. The hovering ground curtain according to claim 2,

the cylinder assembly includes: the piston is slidably arranged in the cylinder, one end of the cylinder is rotatably connected to the first rod body, one end of the piston rod is connected with the piston, and the other end of the piston rod is rotatably arranged on the base box.

4. The hovering ground curtain according to claim 2, wherein the first rod and the second rod are articulated by a connection assembly;

5. The hovering ground curtain according to claim 4, wherein the first and second connectors are fixedly mounted to the first and second rods by bolts, respectively.

6. The hovering ground curtain according to claim 1, wherein the coil spring assembly comprises: the winding device comprises a fixing seat, a winding spring shaft and a winding spring, wherein the fixing seat is fixedly arranged on the base box, one end of the winding spring shaft is fixedly inserted on the fixing seat, the winding roller is sleeved on the winding spring shaft, and the winding spring is connected with the winding spring shaft and the winding roller.

7. The hovering ground curtain according to claim 1, wherein the curtain mechanism comprises a shaping pulling rope, the shaping pulling rope connects the top cover and the wind-up roll, the shaping pulling rope is disposed on two sides of the curtain, and the shaping pulling ropes on the two sides are respectively connected to the curtain.

8. The hovering ground curtain according to claim 7, wherein a set screw is provided on the wind-up roller, and one end of the shaping pull rope is wound around the set screw.

9. The hovering type ground curtain according to claim 7, wherein connection ends are disposed on two sides of the curtain, a rope winding through hole is disposed on each connection end, and the shaping pulling rope is inserted into the rope winding through hole.

10. The hovering ground curtain according to claim 1, wherein a foot is further provided on the base box.