CN210983019U

CN210983019U - Projection screen bidirectional opening and closing device for mobile end holographic 3D screen

Info

Publication number: CN210983019U
Application number: CN202020114378.5U
Authority: CN
Inventors: 王颖琦
Original assignee: Shanghai Qiaoba Information Technology Co ltd
Current assignee: Shanghai Qiaoba Information Technology Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-07-10
Anticipated expiration: 2030-01-19

Abstract

The utility model discloses a projection screen two-way opening and closing device for moving end holographic 3D screen, which comprises a bracket, a beam and a projection screen, wherein a steel wire track is arranged between the upper parts of the two brackets, the projection screen is hung on the steel wire track through a hanging ring, a double-end threaded rod is arranged above the steel wire track, a driving motor is arranged on the brackets, and a closed guide device is respectively arranged on the projection screen along the two ends; the utility model discloses utilize the walking nut on the closed guider and threaded rod both ends difference screw-thread fit, through the direction of rotation of driving motor control threaded rod, can realize the automatic closure or the opening of projection screen curtain, simple structure, convenient operation has avoided probably because the people leads to fixed block not hard up or haulage rope scheduling problem that drops too much in some large-scale occasions; the bidirectional stretching structure utilizes the magnetic strips on the two sides of the projection screen and the magnetic blocks on the bracket to attract each other, so that the projection screen is fully unfolded, and the projection quality is ensured.

Description

Projection screen bidirectional opening and closing device for mobile end holographic 3D screen

Technical Field

The utility model relates to a 3D projection technical field specifically is a two-way device that opens and shuts of projection screen for removing end holographic 3D screen.

Background

In different scenes in real life, such as traditional wedding, conference and the like, a large number of physical properties are needed to be used in arrangement, on one hand, scene selection is limited and restricted greatly, on the other hand, effect expression is not ideal enough, especially, on wedding, a richer theme imagination space and a scene selection room need to be provided for a new person, a mobile terminal holographic 3D screen is appeared, the scene to be expressed can be projected on a projection screen to present a 3D effect, a displayed image is clear and vivid, the depth of field is large (limited only by coherent length of light waves), the viewing effect is quite good, and therefore the mobile terminal holographic 3D screen is more and more popular with people.

The existing projection screen is basically hung on a steel wire track through the projection screen in the using process, the projection screen is closed through manual pulling, and one end of a traction rope is fixed on a fixed block on the ground. This kind of mode probably leads to the fixed block to become flexible or the haulage rope scheduling problem that drops because of the people is many in some large-scale occasions, and current projection screen all fixes one end, and the artifical pulling other end is closed, pulls open the other end because of the power of pulling is too big easily, leads to both ends all to be movable, and the free end is insufficient when also making projection screen expand easily simultaneously, makes its surface fold appear, influences the projection effect. Based on the defects, a projection screen closing device capable of solving the defects is developed in daily life experience.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a two-way device that opens and shuts of projection screen for removing end holographic 3D screen to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a projection screen bidirectional opening and closing device for a mobile-end holographic 3D screen comprises supports, cross beams and a projection screen, wherein the two groups of supports are vertically arranged on the ground, and the tops of the supports are fixedly connected through the cross beams; install the steel wire track that is on a parallel with the crossbeam direction between two support upper portions, be provided with a plurality of links on the projection screen, the projection screen hangs on the steel wire track through the link, and steel wire track top parallel mount has double threaded rod, and the department of corresponding double threaded rod position on one of them support installs driving motor, is provided with closed guider along both ends respectively on the projection screen.

Preferably, the closed guide device comprises a traveling nut and a limiting ring, wherein the traveling nut is sleeved on the double-end threaded rod in a matching mode, the limiting ring is sleeved on the steel wire track in a matching mode, and the traveling nut and the limiting ring are connected through a connecting rod.

Preferably, magnetic stripes are respectively embedded and sewn in two side edges of the projection screen, and a plurality of magnetic blocks mutually attracted with the magnetic stripes are respectively embedded in the opposite surfaces of the two groups of supports.

Preferably, the bearings are respectively installed at positions corresponding to two ends of the double-threaded rod in the support, one end of the double-threaded rod is installed in the bearings, and the other end of the double-threaded rod penetrates through the bearings to be connected with the output end of the driving motor.

Preferably, the double-threaded rod is divided into two bilaterally symmetrical parts by the middle part, and the thread directions of the two parts are opposite.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up double threaded rod, double threaded rod is by the two parts of middle part share bilateral symmetry, the screw thread opposite direction of these two parts, utilize walking nut and double threaded rod both ends screw-thread fit respectively on the closed guider, when double threaded rod rotates, the closed guider at projection screen both ends can be followed double threaded rod and removed, direction of rotation through driving motor control double threaded rod, can realize the automatic closure of projection screen or open, moreover, the steam generator is simple in structure, and convenient for operation, need not the manual work and open and close the operation to projection screen, also need not fix the haulage rope on the fixed block on ground, avoided probably because the people leads to the fixed block not hard up or the haulage rope scheduling problem that drops more in some large-scale occasions.

2. The utility model discloses set up projection screen into the biaxial stretching structure, abandoned a traditional projection screen one end solid structure, utilize the magnetic stripe of projection screen both sides and the magnetic block inter attraction on the support for projection screen expandes fully, and the fixed effectual in both sides, solved the not hard up problem in traditional projection screen both ends, guarantee projection quality, can realize opening and shutting of the arbitrary stroke of projection screen, it is good to pull the effect, uses manpower sparingly.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a specific connection structure of the closed guiding device of the present invention.

Reference numbers in the figures: 1. a support; 101. a magnetic block; 2. a cross beam; 3. projecting a screen; 301. a magnetic strip; 4. a steel wire track; 5. hanging a ring; 6. a double-headed threaded rod; 7. a bearing; 8. a drive motor; 9. a closing guide; 901. a traveling nut; 902. a limiting ring; 903. a connecting rod.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a projection screen bidirectional opening and closing device for a mobile-end holographic 3D screen comprises supports 1, cross beams 2 and projection screens 3, wherein the two groups of supports 1 are vertically arranged on the ground, and the tops of the supports 1 are fixedly connected through the cross beams 2; install the steel wire track 4 that is on a parallel with 2 directions of crossbeam between two 1 upper portions of support, be provided with a plurality of links 5 on the projection screen 3, the projection screen 3 hangs on steel wire track 4 through link 5, and steel wire track 4 top parallel mount has double threaded rod 6, and drive motor 8 is installed to 6 position departments of the corresponding double threaded rod on one of them support 1, is provided with closed guider 9 respectively along both ends on the projection screen 3.

Further, the closed guide device 9 includes a traveling nut 901 that is fitted on the double-threaded rod 6 and a limit ring 902 that is fitted on the steel wire track 4, and the traveling nut 901 and the limit ring 902 are connected by a connecting rod 903.

Furthermore, magnetic stripes 301 are respectively embedded and sewn on two side edges of the projection screen 3, and a plurality of magnetic blocks 101 mutually attracted with the magnetic stripes 301 are respectively embedded on the opposite surfaces of the two groups of brackets 1.

Further, the bearings 7 are respectively installed at positions corresponding to two ends of the double-threaded rod 6 in the support 1, one end of the double-threaded rod 6 is installed in the bearings 7, and the other end of the double-threaded rod penetrates through the bearings 7 to be connected with the output end of the driving motor 8.

Further, the double-threaded rod 6 is divided into two symmetrical parts by the middle part, and the thread directions of the two parts are opposite.

The working principle is as follows: a power supply end electrically connected with the driving motor 8 and an on-off control button connected with the control end of the driving motor 8 are arranged on the beam 2; when the projection screen is in work, the rotation of the double-threaded rod 6 is driven by controlling the rotation of the driving motor 8, the double-threaded rod 6 is divided into two bilaterally symmetrical parts by the middle part, the thread directions of the two parts are opposite, the walking nuts 901 on the closed guide device 9 are in thread fit with the two ends of the double-threaded rod 6 respectively, when the double-threaded rod 6 rotates, the walking nuts 901 move on the double-threaded rod 6, so that the two ends of the projection screen 3 are driven to move along the double-threaded rod 6, the rotation direction of the double-threaded rod is controlled by controlling the rotation direction of the driving motor 8, and the opening or closing state of the projection screen 3 is controlled. When the projection screen is unfolded, the magnetic strips 301 on the side edges of the projection screen 3 and the magnetic blocks 101 embedded in the corresponding support 1 are mutually attracted, so that the two side edges of the projection screen 3 are fully extended and fixed, the surface wrinkles of the projection screen 3 are avoided, and the projection quality is ensured.

It is worth noting that: the whole device is controlled by the master control button, and the equipment matched with the control button is common equipment, so that the device belongs to the existing well-known technology, and the electrical connection relation and the specific circuit structure of the device are not repeated.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A projection screen bidirectional opening and closing device for a mobile-end holographic 3D screen is characterized by comprising supports (1), cross beams (2) and projection screens (3), wherein the two groups of supports (1) are vertically arranged on the ground, and the tops of the supports (1) are fixedly connected through the cross beams (2); install steel wire track (4) that are on a parallel with crossbeam (2) direction between two support (1) upper portions, be provided with a plurality of links (5) on projection screen (3), projection screen (3) hang on steel wire track (4) through link (5), steel wire track (4) top parallel mount has double threaded rod (6), correspond double threaded rod (6) position department on one of them support (1) and install driving motor (8), be provided with closed guider (9) respectively along both ends on projection screen (3).

2. The projection screen bidirectional opening and closing device for the mobile end holographic 3D screen, according to claim 1, is characterized in that: the closed guide device (9) comprises a traveling nut (901) which is sleeved on the double-end threaded rod (6) in a matched mode and a limiting ring (902) which is sleeved on the steel wire track (4) in a matched mode, and the traveling nut (901) and the limiting ring (902) are connected through a connecting rod (903).

3. The projection screen bidirectional opening and closing device for the mobile end holographic 3D screen, according to claim 1, is characterized in that: magnetic stripes (301) are respectively embedded and sewn in two side edges of the projection screen (3), and a plurality of magnetic blocks (101) which are mutually attracted with the magnetic stripes (301) are respectively embedded in opposite surfaces of the two groups of brackets (1).

4. The projection screen bidirectional opening and closing device for the mobile end holographic 3D screen, according to claim 1, is characterized in that: correspond double-end threaded rod (6) both ends position department in support (1) and install bearing (7) respectively, install in bearing (7) double-end threaded rod (6) one end, the other end passes bearing (7) and is connected with the output of driving motor (8).

5. The projection screen bidirectional opening and closing device for the mobile end holographic 3D screen, according to claim 1, is characterized in that: the double-head threaded rod (6) is divided into two parts which are symmetrical left and right by the middle part, and the thread directions of the two parts are opposite.