CN114080564B

CN114080564B - High-speed lifting projector position system

Info

Publication number: CN114080564B
Application number: CN202080049917.4A
Authority: CN
Inventors: 裴允晟
Original assignee: Kenotong Korea Co ltd
Current assignee: Kenotong Korea Co ltd
Priority date: 2019-07-11
Filing date: 2020-07-09
Publication date: 2023-05-12
Anticipated expiration: 2040-07-09
Also published as: KR102031787B1; CN114080564A; WO2021006660A1

Abstract

The present invention relates to a projector position system, and more particularly, to a high-speed elevating projector position system that elevates an elevating plate by a pair of ball screws and elevates an elevating plate connected to the front of the elevating plate by a rack and pinion, thereby elevating a projector position unit provided with a projector at a high speed.

Description

High-speed lifting projector position system

Technical Field

Background

Digital cinema has three meanings: movies including computer images, digitally produced and edited movies, and digitally shown and released movies. Digital cinema, which has been formally expanded and developed as an extension of established commercial sense aesthetics in hollywood since the mid 1970 s, is widespread in almost all types. Digital cinema presents a cognitive problem, particularly a realistic problem of movies, in terms of reference to reality.

Digital technology has begun to be truly applied to movies after the 1990 s, and has become the most important factor in various stages of movie planning, production, distribution, projection, etc. Since movies are a highly technology-dependent medium, the production process is complex, and almost every stage from planning to projection and even marketing contains digital technology elements, each person using this term refers only to a specific field or element of the movie, so there is some confusion in defining the concept, but digital movies generally have three uses.

First, in terms of content, a digital cinema refers to "a movie in which content includes Computer-generated images (Computer-Generated Imagery, CGI) produced using digital technology, in particular, using technologies such as Computer graphics (Computer Graphics, CG) and digital synthesis (composing)" (Manovich, 2001).

Second, in the propagation process, digital cinema is not distributed in the form of cinema prints and is shown by a conventional projector, but "movies distributed by digital transmission means (in digital cinema) such as satellites, optical cables, light packages, and the like and shown by a digital projector".

Third, in terms of production, a digital cinema refers to "a low-cost cinema produced by a small number of producers using small and inexpensive digital photographing and editing equipment".

In order to show such digital cinema, the cinema must use a digital projector (Digital Light Processing).

In such a digital projector (DLP), film production itself is photographed and clipped using 35mm film as in the past, but after the original is completed, it is converted into digital information using a digital copying machine called telecine (tele), transferred to a magnetic tape or a digital disk, and then displayed on a screen by a digital projector, so to speak as in a CD or DVD player.

On the other hand, since the projection room in the movie theater needs to be located higher than the auditorium, a separate projection room must be provided behind the auditorium, and thus, there is no doubt a limitation in space utilization according to the design of the movie theater. That is, there is a disadvantage in that the usability of the space is significantly reduced.

To solve these problems, the present applicant discloses a projector position system in korean patent laid-open publication No. 10-2016-0104257.

As shown in fig. 1 and 2, the projector position system includes: a stand unit 100 configured to provide a space for installing a projector 102 at an upper rear portion of an audience of a movie theater; a lifting unit 200 supporting the stand unit 100 and configured to be capable of lifting and lowering the stand unit 100 to maintain the projector 102; wherein the lifting unit 200 comprises: a base frame 210 provided on the floor adjacent to the rear wall W of the audience space of the movie theater; a vertical frame 220 vertically provided at left and right sides of the base frame 210; an upper frame 230 disposed at an upper portion of the vertical frame 220; a screw shaft 240 vertically provided and rotated in place so that both ends are supported at a central portion of the upper frame 230 and a central portion of the base frame 210; a driving motor 250 provided to be capable of rotating the screw shaft 240; a screw guide 260 provided at the screw shaft 240 rotated by the driving motor 250 and moving in the up-down direction; and a lifting part 270 provided on the screw guide 260 and moving up and down together with the screw guide 260, and fixing the seating unit 100 to lift the seating unit 100; wherein the lifting member 270 includes: a fixing portion 272 capable of fixing the stand unit 100; a support portion 274 integrally formed at one end of the fixing portion 272 and fixable to the screw guide 260; and

guide rollers

276a, 276b rotatably provided at both ends of the support portion 274 in place and guiding the lifting while rolling along the vertical frame 220 when the lifting member 270 is lifted; wherein the

guide rollers

276a and 276b are provided at upper and lower portions of both ends of the support portion 274 at a constant interval, and are provided to be in contact with and guided by one surface of the vertical frame 220 and an inner side surface of the vertical frame 220 perpendicular to the one surface.

Such conventional projector position systems are stable in operation in terms of stability and accuracy, but require speed for quick maintenance.

In addition, in such a conventional projector position system, an inner panel is provided at the front of the frame, and a brush is provided at the elevating path so as not to be exposed to the outside, but it is necessary to remove the exposed portion and enhance the aesthetic structure due to the partial exposure.

Disclosure of Invention

The present invention provides a high-speed elevating projector position system, which can elevate an elevating plate by a pair of ball screws and elevate the elevating plate connected with the front of the elevating plate by a rack and a pinion, thereby elevating a projector position unit provided with a projector at high speed.

In addition, the invention provides a high-speed lifting projector position system, a sliding door is arranged in front of a frame, the upper surface of the sliding door is meshed with the lower surface of a lifting plate through gears, and the sliding door is prevented from being randomly opened, so that the exposed part is removed to enhance aesthetic feeling, prevent safety accidents and prevent foreign matters from entering the frame.

To achieve the above object, the present invention relates to a high-speed elevating projector position system comprising: a booth unit configured to provide a space in which a projector can be installed at a rear upper portion of an audience of a cinema; a main frame fixedly arranged on a rear wall of the cinema auditorium in a rectangular shape; a pair of ball screws vertically provided to the main frame and rotated by a first forward/reverse motor provided to a lower end of the main frame; a lifting plate having connection holes formed at both ends thereof in a vertical direction to be screw-connected to the pair of ball screws, lifting and lowering with rotation of the pair of ball screws, and having a rack formed at a front central portion thereof in a longitudinal direction; and a lifting plate connected to a front surface of the lifting plate, having a pinion gear engaged with the rack gear and a second forward/reverse motor for rotating the pinion gear, and having a pair of horizontal support frames for fixing the projector on the front surface thereof.

Here, the high-speed elevating projector position system is constructed by providing a push-pull type automatic door in front of the main frame.

In addition, here, a fixing groove is provided on the upper surface of the automatic door.

In addition, here, the horizontal support frame of the lifting plate is made of a section steel with an open bottom, and further includes: one end of the main support frame is fixed on the lifting plate, and guide pins are arranged on two sides of the outer side of the other end of the main support frame; the lower support frame is made of profile steel with an open upper surface, surrounds the bottom of the main support frame, is hinged with the main support frame at one end, is provided with a guide hole connected with a guide pin of the main support frame at the other end, and is provided with a fixing protrusion connected with a fixing groove of the automatic door at the bottom surface; and an electric cylinder for lowering the lower support frame from the main support frame such that the fixing protrusion of the lower support frame is fixed to the fixing groove of the automatic door.

In addition, here, steps for connecting the pair of ball screws in the vertical direction are formed on both side surfaces of the elevation plate, a trapezoidal guide rail is formed on an inner side surface of each step, and the elevation plate is provided with a connection protrusion for connecting the guide rails.

Here, the upper and lower ends of each of the pair of ball screws are provided with a first limit switch for stopping the lifting plate at a fixed position.

In addition, here, the rack upper and lower ends are provided with a second limit switch for stopping the lift plate at a fixed position.

Effects of the invention

According to the present invention, the elevating plate is elevated by a pair of ball screws while elevating the elevating plate connected to the front of the elevating plate by using racks and pinions, so that the stand unit provided with the projector is elevated at a high speed, and noise is reduced, and the operating time is reduced by elevating the projector rapidly.

In addition, according to the invention, the sliding door is arranged in front of the frame, the upper surface of the sliding door is meshed with the bottom surface of the lifting plate through the gear, so that the sliding door is prevented from being opened at will, the exposed part is removed to enhance the aesthetic feeling, the safety accident can be prevented in advance, and the effect of preventing foreign matters from entering the frame is achieved.

Drawings

Fig. 1 and 2 are views of a prior art projector positioning system.

Fig. 3 is a schematic diagram of a high speed elevator projector positioning system according to the present invention.

Fig. 4 is a side view of fig. 3.

Fig. 5 is a partially enlarged perspective view of the connection relationship between the lift plate and the lift plate according to the present invention.

Fig. 6 is an enlarged partial perspective view of the horizontal support frame structure according to the present invention.

Fig. 7 to 10 are operation explanatory views for explaining the operation of the high-speed elevating projector position system according to the present invention.

Best mode for carrying out the invention

In a preferred embodiment of the present invention, a high speed elevator projector positioning system comprises: a booth unit configured to provide a space in which a projector can be installed at a rear upper portion of an audience of a cinema; a main frame fixedly arranged on a wall body behind the movie theatre audience seat in a rectangular shape; a pair of ball screws vertically provided to the main frame and rotated by a first forward/reverse motor provided to a lower end of the main frame; a lifting plate having connection holes formed at both ends thereof in a vertical direction to be screw-connected to the pair of ball screws, lifting and lowering with rotation of the pair of ball screws, and having a rack formed at a front central portion thereof in a longitudinal direction; and a lifting plate connected to a front surface of the lifting plate, having a pinion gear engaged with the rack gear and a second forward/reverse motor for rotating the pinion gear, and having a pair of horizontal support frames for fixing the projector on the front surface thereof.

Detailed Description

The structure of the high-speed elevating projector position system according to the present invention is described in detail with reference to the accompanying drawings.

In the following description of the present invention, if it is determined that detailed description of related known functions or constructions may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. In addition, the terms described later are terms defined in consideration of functions in the present invention, which may vary according to the intention or convention of users and operators. Therefore, it should be defined in light of the content of the present specification.

Fig. 3 is a schematic view of a high-speed elevating projector position system according to the present invention, fig. 4 is a side view of fig. 3, fig. 5 is a partially enlarged perspective view of a connection relationship between an elevating plate and an elevating plate according to the present invention, and fig. 6 is a partially enlarged perspective view of a horizontal support frame structure according to the present invention.

Referring to fig. 3-6, a high speed lift projector positioning system 300 according to the present invention includes: a machine position unit 310, a main frame 320, a ball screw 330, a lifting plate 340, a lifting plate 350, and an automatic door 360.

First, the stand unit 310 is of a general structure, fixedly installed on a ceiling to provide a space in which the projector 1 can be installed at the upper rear of the theatre audience.

The main frame 320 is fixedly installed in a rectangular shape on the rear wall W of the theatre audience.

Further, the ball screw 330 is provided with a pair vertically installed through a bearing to be rotatable in the same direction while being coupled to the chain (or belt) by a first reversible motor M1 provided at a lower end of the main frame 320.

At this time, the upper and lower ends of each of the pair of ball screws 330 are provided with a first limit switch SW1 for stopping the elevating plate 340 at a fixed position.

Further, the elevating plate 340 is formed with connection holes 341 screw-connected to the pair of ball screws 330 at both ends thereof in a vertical direction, and is elevated and lowered with rotation of the pair of ball screws 330, and is formed with a rack 343 at a front central portion thereof in a longitudinal direction.

Further, steps 345 for connecting the pair of ball screws 330 in a vertical direction are formed on both side surfaces of the elevation plate 340, a trapezoidal guide rail 347 is formed on an inner side surface of each step 345, and a second limit switch SW2 for stopping the elevation plate 350 at a fixed position is provided at an upper and lower end of the rack 343.

Then, the elevation plate 350 is coupled to the front surface of the elevation plate 340, having a pinion 351 engaged with a rack 343 and a second reverse motor M2 for rotating the pinion 351, the front surface of which has a pair of horizontal support frames 353 for fixing the projector 1.

At this time, the lift plate 350 is provided with a connection protrusion 352 for connecting the guide rail 347 of the lift plate 340.

In addition, as shown in fig. 6, the horizontal support frame 353 is composed of a main support frame 355, a lower support frame 357, and a motorized cylinder 359.

The main support 355 is made of a steel section with an open bottom, one end of which is fixed to the lift plate 350, and both sides of the outer side of the other end of which are provided with guide pins P.

The lower support frame 357 is made of upper open section steel, surrounds the bottom of the main support frame 355, has one end hinge-coupled to the main support frame 355, has the other end formed with a guide hole H coupled to the guide pin P of the main support frame 355, and has a fixing protrusion 358 coupled to the fixing groove 361 of the automatic door 360 at the bottom.

The electric cylinder 359 descends the lower support frame 357 from the main support frame 355 such that the fixing protrusion 358 of the lower support frame 357 is fixed to the fixing groove 361 of the automatic door 360. At this time, the electric cylinder 359 is operated before opening the automatic door 360, and is opened after unlocking the automatic door 360, and is operated to fix the automatic door 360 when the automatic door 360 is closed.

In one aspect, the automatic door 360 is a general structure installed in front of the main frame 310 in a sliding door type. At this time, the automatic door 360 is provided with a fixing groove 361 to be coupled to a fixing protrusion 358 of the lift plate 350 to be described below so as not to be opened by an external force. In addition, in order to install the automatic door 360, the finishing material B is installed on both side walls W of the main frame 310, the automatic door 360 is fitted in the finishing material B and installed, preferably, the finishing material B and the automatic door 360 are attached to an inner panel (not shown), and in order to operate the automatic door 360, an operation panel is installed near a separate remote controller or the wall W, and a locking device is preferably provided when the operation panel is installed.

In the high-speed elevating projector position system 300 according to the present invention, it is preferable that a lock device is provided when an operation panel is mounted near a separate remote controller or a wall W in order to operate the first reversible motor M1, the second reversible motor M2, and the electric cylinder 359.

The operation of the high speed elevator projector positioning system according to the present invention will be described in detail with reference to the accompanying drawings.

First, when lowering the projector 1 for maintenance, the operator operates the electric cylinder 359 by operating the operation panel near the remote controller or the wall W.

At this time, as shown in fig. 7 and 8, as the electric cylinder 359 is contracted, the lower support 357 of the horizontal support 353 is lifted upward centering on the hinge at the main support 55, so that the connection between the fixing projection 358 and the fixing groove 361 of the automatic door 360 is released.

In this state, as shown in fig. 9, the operator opens the automatic door 360 by operating the operation panel near the remote controller or the wall W.

In a state where the automatic door 360 is opened, as shown in fig. 10, the operator operates the first and second reversible motors M1 and M2 by operating the operation panel near the remote controller or the wall W.

At this time, the pair of ball screws 330 rotates at the same speed in the main frame 320 with the rotation of the first forward/reverse rotation motor M1, and the lifting plate 340 connected to the ball screws 330 is lowered.

At the same time, the pinion 351 rotates along the rack 343 with the rotation of the second forward/reverse motor M2, and the lift plate 350 descends from the lift plate 340 by itself.

At this time, the lift plate 350 is lowered when it is lowered faster than the lift plate 340. At this time, the lifting plate 340 is lowered by the first limit switch SW1 and then stopped at the fixed position, and the lifting plate 350 is lowered by the second limit switch SW2 and then stopped at the fixed position.

After completion of the lowering, the operator completes maintenance of the projector 1, lifts the lift plate 340 and the lift plate 350 in the reverse order of the above-described process, completes the lifting, closes the automatic door 360, and then extends the electric cylinder 359 to connect the fixing protrusion 358 of the lower support frame 357 to the fixing groove 361 of the automatic door 360.

While the invention is susceptible to various modifications and alternative forms, specific embodiments have been described in the detailed description thereof. It should be understood, however, that the invention is not limited to the particular forms set forth in the detailed description, but is to be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

Description of the reference numerals

310: the unit 320: main frame

330: ball screw 340: lifting plate

350: lift plate 360: automatic door

Claims

1. A high speed elevator projector positioning system, the system comprising: a booth unit configured to provide a space in which a projector can be installed at a rear upper portion of an audience of a cinema;

a main frame fixedly arranged on a rear wall of the cinema auditorium in a rectangular shape;

a pair of ball screws vertically arranged on the main frame and rotated by a first forward and reverse motor arranged at the lower end of the main frame, and the upper and lower ends of the ball screws are respectively provided with a first limit switch;

a lifting plate, two ends of which are formed with connection holes connected with the pair of ball screws along the vertical direction, lifting along with the rotation of the pair of ball screws, a rack with a second limit switch at the upper end and the lower end is longitudinally formed at the front central part, steps for connecting the pair of ball screws along the vertical direction are formed at two sides, and a trapezoid guide rail is formed at the inner side surface of each step;

a lifting plate connected to a front surface of the lifting plate, having a pinion engaged with the rack and a second forward/reverse motor for rotating the pinion, the front surface having a pair of horizontal support frames for fixing the projector, and having a connection protrusion for connection to the guide rail;

the push-pull automatic door is arranged in front of the main frame, and a fixing groove is formed in the push-pull automatic door; and

an operation panel which is installed near a separate remote controller or a wall body and is provided with a locking device for operating the first reversible motor, the second reversible motor and the electric cylinder;

the horizontal support frame of lift plate is made by the shaped steel that the bottom is open, still includes: one end of the main support frame is fixed on the lifting plate, and guide pins are arranged on two sides of the outer side of the other end of the main support frame; the lower support frame is made of profile steel with an open upper surface, surrounds the bottom of the main support frame, is hinged with the main support frame at one end, is provided with a guide hole connected with a guide pin of the main support frame at the other end, and is provided with a fixing protrusion connected with a fixing groove of the automatic door at the bottom surface; and an electric cylinder for lowering the lower support frame from the main support frame, fixing the fixing protrusion of the lower support frame to the fixing groove of the automatic door, operating before opening the automatic door, releasing the locking of the automatic door to open, and operating to fix the automatic door when the automatic door is closed.