CN204576051U - Black surround regulating device on a kind of mute - Google Patents

Abstract

The utility model relates to a device for adjusting a black frame on a film screen, which comprises a hanging beam, a support platform, a guide wheel of a hanging point, a U-shaped anti-falling frame, a steel wire rope, a black cloth on the upper side, locking screws, a black frame and a cloth holder, and a black cloth on the upper side. Located in front of the hanging beam, the upper end of the upper black cloth is fixed to the hanging beam, the support platform is fixed on the upper end of the front part of the hanging beam, the lifting point guide wheel is installed on the support platform, and the U-shaped anti-falling frame is fixed on the support platform through bolts , the buttock is installed at the lower end of the upper black cloth, the black frame is installed horizontally at the front end of the buttock, the lower end of the wire rope is fixed on the buttock by locking screws, and the upper part of the wire rope passes through the lifting point guide wheel and the U-shaped anti-detachment frame. The area between, and the wire rope goes around the lifting point guide wheel. The utility model has the advantages of reasonable structural design, low manufacturing cost and convenient operation, and can adjust the effective screen of the screen to meet the size requirements of different movie projection screens, and can ensure the stability during work.

Description

A black frame adjustment device on a film screen

technical field

The utility model relates to the technical field of film and television equipment, in particular to a black frame adjustment device on a film screen.

Background technique

As we all know, the width and height of movie screens have different ratios. Currently, the commonly used ones are 2.39:1 and 1.85:1. If the projection screen is small, most of the size of the screen will be vacated. Once it is exposed, it will affect the viewing effect. There is an urgent need for a device that can adjust the effective screen screen to achieve the best movie projection effect. .

Contents of the invention

In order to solve the above problems, the utility model provides a device with reasonable structural design, low manufacturing cost and convenient operation, which can adjust the effective screen of the screen, that is, a black frame adjustment device on the movie screen.

A black frame adjustment device on a movie screen, including a hanging beam, a support platform, a hanging point guide wheel, a U-shaped anti-falling frame, a steel wire rope, a black cloth on the upper side, a locking screw, a black frame and a butt, so that the screen of the movie is vertical It is fixed under the hanging beam, the upper black cloth is located in front of the hanging beam, and at the same time, the upper black cloth is placed in front of the screen, the upper end of the upper black cloth is fixedly connected with the hanging beam, and the bracket is fixed on the hanging beam The upper end of the front part of the suspension point guide wheel is installed on the pallet, the U-shaped anti-falling frame is fixed on the pallet by bolts, the cloth holder is installed on the lower end of the upper black cloth, and the black frame is installed horizontally At the front end of the buttock, the lower end of the wire rope is fixed on the buttock by locking screws, the upper part of the wire rope passes through the area between the suspension point guide wheel and the U-shaped anti-falling frame, and the wire rope goes around the suspension Point guide wheel. The utility model adopts the U-shaped anti-detachment frame, which can play a good restraint effect on the wire rope, effectively prevent the wire rope from loosening, and ensure the stability during work; state; use the external traction device to connect with the steel wire rope, so that when the black border needs to be controlled to rise and fall, start the external traction device, and by pulling or loosening the steel wire rope, it can synchronously drive the buttock, rise or fall, and finally realize the adjustment of the screen The effect of effectively projecting the screen size.

The butt is provided with a vertical hanging plate and an extension plate inclined to the rear and upward, the lower end of the steel wire rope is fixed on the upper end of the vertical hanging plate through locking screws, and the extension plate and the vertical hanging plate form a receiving area. The lower end of the upper black cloth is fixed in the accommodation area. In the process of rising the buttock, the utility model receives the upper black cloth into the accommodation area to ensure that the working length of the upper black cloth is reduced synchronously without affecting the viewing effect; When the bottom of the cloth is lowered, the upper black cloth originally received in the bottom of the cloth will be unfolded synchronously, so that the working length of the upper black cloth will increase synchronously, that is, the work of effective picture adjustment on the screen will be completed.

The beneficial effects of the utility model are: the utility model has the advantages of reasonable structural design, low manufacturing cost and convenient operation, and can adjust the effective screen of the screen, thereby adapting to the size requirements of different movie projection screens and ensuring the projection effect ;Using the U-shaped anti-detachment frame can play a good role in restraining the wire rope, effectively preventing the wire rope from loosening, and ensuring the stability during work.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is a left view structure diagram of the utility model.

Detailed ways

In order to make the technical means realized by the utility model, creation feature, purpose and effect easy to be understood, the utility model is further elaborated below.

As shown in Figure 1, a device for adjusting the black frame on the film screen includes a hanging beam 1, a support platform 3, a lifting point guide wheel 4, a U-shaped anti-falling frame 5, a steel wire rope 6, a black cloth on the upper side 7, and a locking screw 8 , black border 9 and buttock 10, the screen 2 of film like this is then vertically fixed below the suspension beam 1, and the described upper black cloth 7 is positioned at the front of the suspension beam 1, and the upper black cloth 7 is placed in front of the screen 2 simultaneously, The upper end of the upper black cloth 7 is fixedly connected with the suspension beam 1, the support platform 3 is fixed on the front upper end of the suspension beam 1, the suspension point guide wheel 4 is installed on the support platform 3, and the U-shaped anti-falling The frame 5 is fixed on the pallet 3 by bolts, the buttock 10 is installed on the lower end of the upper black cloth 7, the black frame 9 is horizontally installed on the front end of the buttock 10, and the lower end of the steel wire rope 6 passes through the locking screw 8 Fixed on the buttock 10, the upper part of the steel wire rope 6 passes through the area between the hanging point guide wheel 4 and the U-shaped anti-falling frame 5, and the steel wire rope 6 bypasses the hanging point guide wheel 4. The utility model adopts the U-shaped anti-detachment frame 5, which can play a good restraint effect on the steel wire rope 6, effectively prevents the loosening of the steel wire rope 6, and ensures the stability during work; buttock 10 pulls the steel wire rope 6 all the time, so that The steel wire rope 6 is always in a stretched straight state; use the external traction device to connect with the steel wire rope 6, so that when it is necessary to control the lifting of the black frame 9, start the external traction device, and pull or loosen the steel wire rope 6 to synchronously drive the butt 10. Up or down, and finally achieve the effect of adjusting the effective screen size of the screen 2.

The buttock 10 is provided with a vertical hanging plate 10b and an extension plate 10a arranged obliquely to the rear and upward, the lower end of the steel wire rope 6 is fixed on the upper end of the vertical hanging plate 10b by a locking screw 8, and the extension plate 10a is connected to the vertical hanging plate 10b. Hanging plate 10b forms the accommodation area, and the lower end of the upper black cloth 7 is fixed in the accommodation area. In the process of the rising of the buttock 10 in the utility model, the upper black cloth 7 is received in the accommodation area to ensure the upper black cloth 7 The synchronous reduction of the working length will not affect the viewing effect; when the butto 10 descends, the upper black cloth 7 originally received in the butuo 10 will be unfolded synchronously, so that the working length of the upper black cloth 7 will be increased synchronously, which is completed The work on the effective picture adjustment of screen 2 has been completed.

In the process of use, when the effective screen size of the actually projected movie is large, start the external traction device and pull the steel wire rope 6 upwards, which will synchronously drive the buttuo 10 to move upwards, so that the upper black cloth 7 will be gradually received. In the accommodation area, complete the reduction of the working size of the upper black cloth 7 until it is suitable for the effective screen size of the film; when the effective screen size of the actually projected film is small, start the external traction device, loosen the wire rope 6, Then the butt 10 and the black frame 9 move down under the action of their own weight, and at the same time, the upper black cloth 7 received in the accommodation area is gradually expanded to increase the effective working size of the upper black cloth 7 until it is compatible with the effective screen size of the film .

The basic principles, main features and advantages of the present utility model have been shown and described above. Those skilled in the industry should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model There will also be various changes and improvements, and these changes and improvements all fall within the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.

Claims (3)

1. A device for adjusting the black frame on the film screen, including a hanging beam (1), a support platform (3), a lifting point guide wheel (4), a U-shaped anti-detachment frame (5), a steel wire rope (6), and a black cloth on the upper side (7), locking screw (8), black frame (9) and buttress (10), it is characterized in that: described top black cloth (7) is positioned at the front of suspension beam (1), described top black cloth (7) ) is fixedly connected with the suspension beam (1), the support platform (3) is fixed on the front upper end of the suspension beam (1), and the suspension point guide wheel (4) is installed on the support platform (3). The U-shaped anti-falling frame (5) is fixed on the bracket (3) by bolts, the buttock (10) is installed on the lower end of the upper black cloth (7), and the black frame (9) is horizontally installed on the buttock (10), the lower end of the wire rope (6) is fixed on the buttock (10) by a locking screw (8), and the upper part of the wire rope (6) passes through the lifting point guide wheel (4), U-shaped The area between the anti-falling frames (5), and the steel wire rope (6) bypasses the lifting point guide wheel (4). 2. A device for adjusting black frames on a film screen according to claim 1, characterized in that: the butt (10) is provided with a vertical hanging plate (10b) and an extension plate (10a) arranged obliquely to the rear and upward ), the lower end of the steel wire rope (6) is fixed to the upper end of the vertical hanging plate (10b) by a locking screw (8), and the extension plate (10a) and the vertical hanging plate (10b) form an accommodation area. 3. The device for adjusting the black frame on the film screen according to claim 2, characterized in that: the lower end of the upper black cloth (7) is fixed in the containing area.