WO2016091118A1 - 变幅框架投影幕 - Google Patents

变幅框架投影幕 Download PDF

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Publication number
WO2016091118A1
WO2016091118A1 PCT/CN2015/096332 CN2015096332W WO2016091118A1 WO 2016091118 A1 WO2016091118 A1 WO 2016091118A1 CN 2015096332 W CN2015096332 W CN 2015096332W WO 2016091118 A1 WO2016091118 A1 WO 2016091118A1
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WO
WIPO (PCT)
Prior art keywords
frame
telescopic
fixed
telescopic frame
fixedly connected
Prior art date
Application number
PCT/CN2015/096332
Other languages
English (en)
French (fr)
Inventor
窦志刚
Original Assignee
窦志刚
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201420760528.4U external-priority patent/CN204241826U/zh
Priority claimed from CN201420760309.6U external-priority patent/CN204241825U/zh
Application filed by 窦志刚 filed Critical 窦志刚
Publication of WO2016091118A1 publication Critical patent/WO2016091118A1/zh

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Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00Projectors or projection-type viewers; Accessories therefor
    • G03B21/54Accessories
    • G03B21/56Projection screens
    • G03B21/58Projection screens collapsible, e.g. foldable; of variable area

Definitions

  • the present invention relates to projection screens, and more particularly to a framing frame projection screen.
  • Projection screens are tools used to display images and video files in movies, offices, home theaters, and large conference venues.
  • Prior art video files are 1.78:1 (16:9), 1.85:1, 2.35:1 (21:9) according to the aspect ratio, 2.
  • cover panel for sliding and blocking part of the screen, which realizes the change of the length and width of the unobstructed part of the screen, corresponding to different length and width projection images, eliminating the black edge or image cropping displayed on the screen of the general fixed frame, but the occlusion portion still exists in the projection screen.
  • the tolerance of the human eye can accurately identify the image boundary and the frame boundary, and can also identify the existence of the mask panel. Affect the viewing effect.
  • the technical problem to be solved by the present invention is that, in view of the above-mentioned defects of the prior art, a projection frame projection screen is provided, which is driven by a telescopic sliding frame to retract the screen, adjust the size of the projection screen in one direction, and change the projection screen.
  • the aspect ratio makes the projection screen frame fit exactly with the image boundary, providing a perfect imaging area for viewing images of various aspect ratios, completely eliminating the black edges or image cropping of the image, and obtaining the best viewing effect.
  • the technical solution adopted by the present invention to solve the technical problem is to construct a luffing frame projection screen, including a screen
  • the cloth, the reel, the frame and the support, the frame is composed of two fixed length frames and two telescopic frames, which are alternately and symmetrically fixedly connected;
  • the support is fixed on the back of the frame and the two ends of the fixed length frame, and the reel is placed
  • the support disposed at both ends of the fixed length frame is fixedly connected;
  • the curtain is arranged between the frame and the reel, and the two sides of the screen are respectively fixedly connected with the reel fixed on the fixed length frame, and the two pairs of magnetic strips are respectively placed on the screen.
  • the telescopic frame of the frame and the curtain are fixed.
  • the telescopic frame comprises a fixed frame, a telescopic frame and a variable-width push-pull rod, wherein the fixed frame is a groove type in which the mouth is inward, and the telescopic frame is a rectangular tube.
  • Two telescopic frames are respectively disposed at two ends of the fixing frame, and the end ends are inserted into the fixing frame and slidably connected.
  • each telescopic frame is respectively fixedly connected with the end of a fixed length frame, and two amplitudes are respectively
  • the push-pull rods are respectively built in the two ends of the fixed frame, and one end of each of the variable-pushing push rods is fixedly connected to the fixed frame, and the other end is fixed to the telescopic frame, and the magnetic strips are respectively placed on the fixed frame and the telescopic frame and corresponding to the screen and fixed. even.
  • a detachment preventing slider is further disposed in the fixing frame, and an anti-off sliding slot corresponding to the fixing frame slider is further disposed outside the telescopic frame, and the telescopic frame is fixedly fixed Inside the frame, the anti-off slider is slidably connected to the anti-skid slot.
  • the magnetic strip is a plurality of magnetic blocks arranged in sequence.
  • a vertical and horizontal framing frame projection screen including a first reel, a second reel, a frame, a support and a curtain
  • the frame is composed of two The first telescopic frame of the left and right borders, the second telescopic frame as the upper frame, and the third telescopic frame as the lower frame are alternately and symmetrically connected; in the back of the frame, two first telescopic frames and two second telescopic frames The ends are respectively fixed to the support, and the first reel is placed between the supports disposed at both ends of the first telescopic frame and fixed
  • a second reel is placed between the supports disposed at both ends of the second telescopic frame and fixed; the curtain is inverted ⁇
  • the inverted ⁇ -shaped curtain is disposed between the frame and the first reel or the second reel, and the two sides of the lower portion of the curtain are respectively fixed to the first reel fixedly connected to the first telescopic frame, and the upper portion and the second retractable frame are fixedly attached
  • the upper second reel is fixed, and a pair of magnetic strips are placed between the edge of the curtain and the frame other than the first reel or the second reel, the frame and the curtain are fixed.
  • the first telescopic frame includes a first fixed frame, a first telescopic frame and a first variable-pushing push-pull rod
  • the first fixed frame is a cornice
  • the inwardly-shaped groove type and the two ends are respectively fixedly connected to the support
  • the first telescopic frame is a rectangular tube
  • the first telescopic frame is placed at one end of the first fixed frame, and the end extension
  • the other end of the first telescopic frame is fixedly connected to the end of the second telescopic frame as the upper frame, and the other end of the first fixing frame and the end of the third telescopic frame as the lower frame are fixed.
  • the first variable width push-pull rod is built in the first fixed frame, one end of the first variable-width push-pull rod is fixedly connected to the first fixed frame, and the other end is fixed to the first telescopic frame, and the first fixed frame is fixed first.
  • the boxes are down as left and right borders, respectively.
  • the second telescopic frame includes a second fixed frame, a second telescopic frame, a third telescopic frame and a second variable amplitude push-pull rod, the second The fixing frame is in the groove shape of the inward opening, and the two ends are respectively fixedly supported.
  • the second telescopic frame is a rectangular tube, and the second telescopic frame is placed at one end of the second fixing frame, and the end protrudes into the second fixing frame and The other end of the second telescopic frame is fixedly connected to the end of the first telescopic frame of the first telescopic frame; the third telescopic frame is a rectangular tube, and the third telescopic frame is placed at the other end of the second fixed frame.
  • the head extends into the second fixing frame and is slidably connected.
  • the other end of the third telescopic frame is fixedly connected to the end of the first telescopic frame of the other first telescopic frame, and the two second variable-pushing push rods are respectively built in the second One end of each of the second variable-pushing push rods is fixedly connected to the second fixing frame, and the other end is fixed to the second telescopic frame or the third telescopic frame, and the pair of magnetic strips are respectively placed in the second telescopic frame Or the third telescopic frame is corresponding to the position of the curtain and is fixed.
  • the second telescopic frame includes a third fixed frame, a third telescopic frame, a fourth telescopic frame and a third variable amplitude push-pull rod
  • the third The fixing frame is a groove type inwardly of the mouth
  • the third telescopic frame is a rectangular tube
  • the third telescopic frame is placed at one end of the third fixing frame, the end protrudes into the third fixing frame and is slidably connected
  • the third telescopic frame is The other end is fixed to the end of the first telescopic frame of the two first telescopic frames
  • the fourth telescopic frame is a rectangular tube
  • the fourth telescopic frame is placed at the other end of the third fixed frame, and the end protrudes into the third fixed frame.
  • the other end of the fourth telescopic frame is fixedly connected to the end of the first telescopic frame of the other first telescopic frame, and the two third variable-pushing push rods are respectively built in the two ends of the third fixing frame, each of which is respectively One end of the third variable width push-pull rod is fixedly connected to the third fixing frame, and the other end is fixedly connected to the third telescopic frame or the fourth telescopic frame, and the pair of magnetic strips are respectively placed on the third telescopic frame or the fourth telescopic frame and the curtain Corresponding position and fixed
  • the second telescopic frame includes a third fixed frame, a third telescopic frame, a fourth telescopic frame and a third variable amplitude push-pull rod
  • the third The fixed frame is a slot type with the inward opening of the mouth
  • the third telescopic frame is a rectangular tube
  • the third telescopic frame is placed at one end of the third fixed frame, and the end is extended into the third
  • the other end of the third telescopic frame is fixedly connected to the end of the first telescopic frame of the two first telescopic frames
  • the fourth telescopic frame is a rectangular tube
  • the fourth telescopic frame is placed in the third fixed frame.
  • the other end and the end extend into the third fixed frame and are slidably connected.
  • the other end of the fourth telescopic frame is fixedly connected to the end of the first telescopic frame of the two first telescopic frames, and the two third variable-pushing push rods are respectively built in.
  • One end of each third variable-pushing push rod is fixedly connected to the third fixed frame at the two ends of the third fixed frame, and the other end is fixedly connected with the third telescopic frame or the fourth telescopic frame, and a pair of magnetic strips are respectively placed
  • the third telescopic frame or the fourth telescopic frame is corresponding to the screen and is fixed.
  • the first fixed frame or the second fixed frame is further provided with a detachment preventing slider, the first telescopic frame or the second telescopic frame or the third telescopic frame
  • An anti-off chute corresponding to the second fixed frame slider is further disposed, and the anti-off slide is slidably connected to the anti-off chute.
  • the magnetic strip is a plurality of magnetic blocks arranged in sequence.
  • a framing frame projection screen including a curtain, a reel, a frame and a support
  • the frame including a first frame, a second frame, and a third a frame and a fourth frame
  • the two ends of the first frame and the second frame are respectively fixed with a support
  • the reel is disposed between the first frame and the support disposed at both ends of the second frame and
  • the screen is disposed between the frame and the reel, and the two sides of the screen are respectively fixed with the reels fixed on the first frame and the second frame, between the third frame and the fourth frame of the frame and the curtain And fixed.
  • the first frame and the second frame are fixed length frames
  • the third frame and the fourth frame are telescopic frames
  • the two telescopic frames are alternately and symmetrically fixed to form the frame
  • the support is fixed on the back of the frame and the two ends of the fixed length frame
  • the reel is placed between the supports disposed at both ends of the fixed length frame and fixed
  • the curtain is arranged between the frame and the reel, and the two sides of the screen are respectively fixed with the reel fixed on the fixed length frame, and the telescopic frame of the frame and the curtain are fixedly connected.
  • the telescopic frame comprises a fixed frame, a telescopic frame and a variable-width push-pull rod, wherein the fixed frame is a groove type with an inward opening, and the telescopic frame is a rectangular tube.
  • Two telescopic frames are respectively disposed at two ends of the fixing frame, and the end ends are inserted into the fixing frame and slidably connected.
  • each telescopic frame is respectively fixedly connected with the end of a fixed length frame, and two amplitudes are respectively
  • the push-pull rods are respectively built in the two ends of the fixed frame, and one end of each of the variable-pushing push rods is fixedly connected to the fixed frame, and the other end is fixed to the telescopic frame, and the magnetic strips are respectively placed on the fixed frame and the telescopic frame and corresponding to the screen and fixed. even.
  • the fixing frame is further provided with a detachment preventing slider, and an anti-off sliding groove corresponding to the fixed frame slider is further disposed outside the telescopic frame, and the telescopic frame is fixedly fixed Inside the frame, the anti-off slider is slidably connected to the anti-skid slot.
  • the reel includes a first reel and a second reel, and the first frame and the second frame are first telescopic frames as left and right frames,
  • the third frame is a second telescopic frame as an upper frame
  • the fourth frame is a third telescopic frame as a lower frame.
  • the first telescopic frame, the second telescopic frame and the third telescopic frame are alternately and symmetrically connected to each other.
  • the frame is fixed on the back side of the frame, the two first telescopic frames and the second telescopic frame are respectively fixed, and the first reel is placed between the supports disposed at two ends of the first telescopic frame, and is fixed.
  • the second reel is placed between the supports disposed at both ends of the second telescopic frame and fixed.
  • the curtain is an inverted T shape, and the inverted T-shaped curtain is disposed between the frame and the first reel or the second reel, and the two sides of the lower portion of the curtain are respectively fixed
  • the first reel attached to the first telescopic frame is fixedly connected, and the upper portion is fixed to the second reel fixed to the second telescopic frame.
  • the second telescopic frame includes a second fixed frame, a second telescopic frame, a third telescopic frame and a second variable amplitude push-pull rod, and the second fixed
  • the frame is inwardly grooved and fixed at both ends.
  • the second telescopic frame is a rectangular tube.
  • the second telescopic frame is placed at one end of the second fixing frame, and the end protrudes into the second fixing frame and slides.
  • the other end of the second telescopic frame is fixedly connected to the end of the first telescopic frame of the first telescopic frame;
  • the third telescopic frame is a rectangular tube, and the third telescopic frame is placed at the other end and end of the second fixed frame.
  • the second telescopic frame is fixedly connected to the first telescopic frame end of the other first telescopic frame, and the two second translating levers are respectively built in the second fixing.
  • the two ends of the second variable width push-pull rod are fixedly connected to the second fixing frame, and the other end is fixed to the second telescopic frame or the third telescopic frame, and the pair of magnetic strips are respectively placed in the second telescopic frame or
  • the third telescopic frame is corresponding to the screen and is fixed.
  • the second telescopic frame includes a third fixed frame, a third telescopic frame, a fourth telescopic frame and a third variable amplitude push-pull rod, and the third fixed
  • the frame is in the shape of a slot inward
  • the third telescopic frame is a rectangular tube
  • the third telescopic frame is placed at one end of the third fixed frame, the end protrudes into the third fixed frame and is slidably connected
  • the third telescopic frame is further One end is fixed to the end of the first telescopic frame of the two first telescopic frames
  • the fourth telescopic frame is a rectangular tube
  • the fourth telescopic frame is placed at the other end of the third fixed frame, and the end is inserted into the end
  • the third fixed frame is slidably connected, and the other end of the fourth telescopic frame is fixedly connected to the first telescopic frame end of the other first telescopic frame, and the two third fixed
  • each third variable-pushing push rod is fixedly connected to the third fixing frame, and the other end is fixedly connected with the third telescopic frame or the fourth telescopic frame, and the pair of magnetic strips are respectively placed in the third telescopic frame or the fourth
  • the telescopic frame is corresponding to the screen and is fixed.
  • the second telescopic frame includes a third fixed frame, a third telescopic frame, a fourth telescopic frame and a third variable amplitude push-pull rod, the third fixed The frame is in the shape of a slot inward, the third telescopic frame is a rectangular tube, the third telescopic frame is placed at one end of the third fixed frame, the end protrudes into the third fixed frame and is slidably connected, and the third telescopic frame is further One end is fixed to the end of the first telescopic frame of the two first telescopic frames; the fourth telescopic frame is a rectangular tube, and the fourth telescopic frame is placed at the other end of the third fixed frame, and the end protrudes into the third fixed frame and Sliding connection, the other end of the fourth telescopic frame is fixedly connected to the end of the first telescopic frame of the two first telescopic frames, and the two third variable-pu
  • the fascia frame projection screen of the present invention has the beneficial effects of: changing the length by the movement of the telescopic frame, and synchronizing the reeling of the screen with the same reel, so that the projection screen used can satisfy the same video file of different format.
  • the frame of the projection screen used is exactly matched with the image boundary, which not only satisfies the aesthetics of the video file used for viewing the projection screen, but also avoids the black border or the image cropping edge on the projection screen to interfere with the viewing of the video file, and obtains the best viewing effect.
  • the utility model has the advantages of simple structure and low cost.
  • the first movement of the telescopic frame is used to change the length, and the synchronous movement of the reel to the reel of the reel is subjected to a luffing, and then the second movement of the telescopic frame is used to change the height, and the reel is driven to the curtain.
  • the synchronous action of the reeling can ensure the projection area of the projected image in the projection screen of the different projection images, and the frame of the projection screen used is exactly matched with the image boundary, that is, the projection screen is used to satisfy the aesthetic appearance of the projection image.
  • avoiding black edges on the projection screen or cropping edges of the image may interfere with viewing the projected image, and obtain the best and maximum viewing effect, so that the viewer can see the same area of the image when viewing different proportions of video images at the same viewing position. .
  • FIG. 1 is a front view of a projection frame projection screen of the present invention
  • FIG. 2 is a top plan view of FIG. 1;
  • FIG. 3 is a left side view of FIG. 1;
  • FIG. 4 is a front elevational view showing the adjustment of the web of FIG. 1;
  • Embodiment 5 is a front elevational view of Embodiment 2.
  • Figure 6 is a top plan view of Figure 5;
  • Figure 7 is a left side view of Figure 5;
  • FIG. 8 is a front elevational view of FIG. 5 after adjusting the web
  • FIG. 9 is a front view of a projection screen of a longitudinal and horizontal framing frame according to the present invention.
  • Figure 10 is a top plan view of Figure 9;
  • Figure 11 is a left side view of Figure 9;
  • FIG. 12 is a front elevational view showing the screen of the vertical and horizontal framing frame of the present invention after adjusting the web at a time;
  • FIG. 13 is a front elevational view showing the second aspect of the screen of the vertical and horizontal framing frame projection screen of the present invention.
  • FIG. 14 is a left side view of FIG. 13.
  • Figure 1-8 1 fixed length frame, 2 telescopic frame, 3 variable width push-pull rod, 4 fixed frame, 5 curtains, 6 seats, 7 reels, 8 magnetic strips;
  • FIG. 9-14 1 second telescopic frame, 2 first telescopic frame, 3 variable amplitude push-pull rod, 4 first fixed frame, 5 curtains, 6 second fixed frame, 7 second telescopic frame, 8th Three telescopic frames, 9 first telescopic frames, 10 third telescopic frames, 11 first reels, 12 seats, 13 magnetic strips, 14 second reels.
  • Embodiment 1 shows a projection frame projection screen of the embodiment, including a curtain 5, a reel 7, a frame and a support 6, the frame being composed of two left and right sides.
  • the fixed length frame 1 and the upper and lower two telescopic frames are alternately and symmetrically fixedly arranged; the support 6 is fixed on the back of the frame and the two ends of the fixed length frame 1 respectively.
  • the shaft 7 is placed between the support 6 disposed at both ends of the fixed length frame 1 and fixed; the curtain 5 is placed between the frame and the reel 7, and the two sides of the screen 5 are respectively fixed to the reel 7 fixed on the fixed length frame 1 Further, two pairs of magnetic strips 8 are respectively placed on the other two sides of the screen 5, between the telescopic frame of the frame and the curtain 5, and are fixed.
  • the structure of the telescopic frame is: a fixing frame 4, a telescopic frame 2 and a variable-pushing push-pull rod 3, wherein the fixing frame 4 has a groove shape with an inward opening, and a fixing block 4 is also provided with a anti-detachment slider, a telescopic frame 2 is a rectangular tube, and the anti-off chute corresponding to the slider of the fixed frame 4 is further disposed outside the telescopic frame 2, and the two telescopic frames 2 are respectively placed at the two ends of the fixing frame 4, and the end ends are inserted into the fixing frame 4 to prevent off
  • the sliding block is slidably connected to the anti-skid slot, and the other end of each telescopic frame 2 is respectively fixedly connected to the end of a fixed length frame 1 , and the two variable amplitude push-pull rods 3 are respectively built in the two ends of the fixing frame 4 .
  • each of the variable-pushing push rods 3 is fixedly connected to the fixed frame 4, and the other end is fixed to the telescopic frame 2, and the magnetic strips 8 are respectively placed on the fixed frame 4 and the telescopic frame 2 at positions corresponding to the screen 5 and fixed.
  • the magnetic strip 8 is a plurality of magnetic blocks arranged in sequence. This embodiment is manufactured using the prior art, and the reel 7 and the variable amplitude push-pull rod 3 are commercially available products of the prior art.
  • the use process of this embodiment is: when viewing a video file different from the used projection screen, first adjust the height of the video file to be the same as the size of the fixed length frame 1, and then start the variable amplitude push-pull rod 3, in the variable amplitude
  • the push-pull rod 3 moves to reduce the length of the web ⁇ , and the reel 7 is driven to take up the curtain 5, until the swivel push rod 3 drives the reel 7 to retract the screen 5 , and the projection screen surface is reduced to the frame and the image boundary, and the reel 7 stops the roll.
  • variable-width push-pull rod 3 moves to increase the length of the web, and drive the reel 7 to release the screen 5, until the variable-width push-pull rod 3 Increase the length of the web to the frame and the image boundary exactly, and the reel 7 stops releasing the curtain 5.
  • Embodiment 2 the structure and the working process of the embodiment are basically the same, and the difference is that: the fixed length frame 1 is the upper and lower borders, and the telescopic frame is left and right. The border, adjust the projection screen width, shrink and release the width dimension.
  • Embodiment 3 the structure and working process of the embodiment are basically the same as those of the embodiment 2, except that: the telescopic frame is different, and the structure of the telescopic frame is: including the fixed frame 4, the telescopic frame 2, and the variable amplitude
  • the push-pull rod 3, the fixing frame 4 is a groove type inwardly of the mouth, and the anti-detachment slider is further disposed in the fixing frame 4,
  • the telescopic frame 2 is a rectangular tube, and the telescopic frame 2 is further provided with a slider corresponding to the fixed frame 4
  • a telescopic frame 2 is placed at one end of the fixing frame 4, the end protrudes into the fixing frame 4, and the anti-detachment slider is slidably connected with the anti-skid slot.
  • the other end of the telescopic frame 2 is fixed to a fixed length.
  • the end of the frame 1 is fixedly fastened, and the other end of the fixed frame 2 is fixedly connected to the end of the other fixed length frame 1.
  • a variable width push-pull rod 3 is built in the fixing frame 4, and one end of the variable width push-pull rod 3 is fixed. Box 4 is fixed, The other end is fixed to the telescopic frame 2.
  • a vertical and horizontal framing frame projection screen of the present embodiment including a first reel 11, a second reel 14, a frame, a support 12 and a curtain 5, the frame being composed of two as left and right borders.
  • the first telescopic frame 9 , the second telescopic frame 7 as the upper frame and the third telescopic frame 10 as the lower frame are alternately and symmetrically fixedly arranged; on the back of the frame, the two first telescopic frames 9 and the second telescopic frame
  • the two ends of the second reel 14 are respectively fixed between the support 12 and the second reel 14 is disposed at the two ends of the second telescopic frame 7.
  • the support 12 is fixedly connected; the curtain 5 is inverted T-shaped, and the inverted T-shaped curtain 5 is placed between the frame and the first reel 11 or the second reel 14, and the lower sides of the curtain 5 are respectively fixedly connected
  • the first reel 11 on the first telescopic frame 9 is fixedly connected, the upper portion is fixedly connected to the second reel 14 fixed to the second telescopic frame 7, and the pair of magnetic strips 13 are placed on the screen 5 and the first reel 11 or The edge of the two reels 14 is fixed and the frame and the curtain 5 are fixed.
  • the structure of the first telescopic frame 9 includes: a first fixing frame 4, a first telescopic frame 2, and a variable-pushing push-pull rod 3, wherein the first fixing frame 4 has a groove shape inwardly and a fixed position at both ends.
  • the first telescopic frame 2 is a rectangular tube, and the first telescopic frame 2 is placed at one end of the first fixing frame 4, and the end protrudes into the first fixing frame 4 and is slidably connected.
  • One end is fixedly connected to the end of the second telescopic frame 1 of the second telescopic frame 7 as the upper frame, and the other end of the first fixing frame 4 is fixed to the end of the second telescopic frame 1 of the third telescopic frame 10 as the lower frame.
  • the variable width push-pull rod 3 is built in the first fixing frame 4, and one end of the variable-pushing push rod 3 is fixedly connected to the first fixing frame 4, and the other end is fixed to the first telescopic frame 2, and the first telescopic frame 9 is first.
  • the fixed frame 4 is downwardly used as a left and right border, respectively.
  • the first fixing frame 4 is further provided with a detachment preventing slider.
  • the first telescopic frame 2 is further provided with an anti-off sliding slot corresponding to the slider of the first fixing frame 4, and the anti-detachment sliding block is slidably connected with the anti-off sliding slot.
  • the structure of the second telescopic frame 7 is: a second fixing frame 6, a second telescopic frame 1, a third telescopic frame 8 and a variable amplitude push-pull rod 3, wherein the second fixing frame 6 is a slot inwardly of the mouth
  • the second telescopic frame 1 is a rectangular tube, and the second telescopic frame 1 is placed at one end of the second fixing frame 6 and the end protrudes into the second fixing frame 6 and is slidably connected.
  • the other end of the second telescopic frame 1 is fixed to the end of the first telescopic frame 2 of the first telescopic frame 9;
  • the third telescopic frame 8 is a rectangular tube, and the third telescopic frame 8 is placed at the other end of the second fixed frame 6.
  • the other end of the third telescopic frame 8 is fixedly connected to the end of the first telescopic frame 2 of the other first telescopic frame 9 , and the two variable amplitude push rods 3 are respectively connected to the second fixing frame 6 and slidably connected. They are respectively built in the two ends of the second fixing frame 6, and one end of each of the variable-pushing rods 3 is fixedly connected to the second fixing frame 6 and the other end is fixedly connected with the second telescopic frame 1 or the third telescopic frame 8 Strips 13 are respectively placed in the second telescopic frame 1 or The third telescopic frame 8 is corresponding to the screen 5 and is fixed.
  • the structure and the connection relationship of the third telescopic frame 10 are substantially the same as those of the second telescopic frame 7. The difference is that: the two ends of the second fixing frame 6 do not need to be fixed to the support 12, the second telescopic frame 1 or the third telescopic The other end of the frame 8 is fixed to the ends of the first fixing frames 4 of the two first telescopic frames 9 respectively.
  • the second fixing frame 6 is further provided with a detachment preventing slider, and the second telescopic frame 1 or the third telescopic frame 8 is further provided with an anti-off sliding slot corresponding to the slider of the second fixing frame 6 The sliding slot is slidably connected.
  • the magnetic strip 13 is a plurality of magnetic blocks arranged in sequence. This embodiment is manufactured using the prior art, and the first reel 11, the second reel 14, and the variable amplitude push-pull rod 3 are commercially available products of the prior art.
  • the use process of the embodiment is: when viewing a different projection image than the projection screen used, firstly launching the variable width push-pull rod 3 fixed by the second telescopic frame 7 and the third telescopic frame 10, The drawbar 3 drives the second telescopic frame 7 and the third telescopic frame 10 to move the reduced web ⁇ , and also drives the first reel 11 to roll the curtain 5, until the variable push-pull rod 3 reduces the projection screen surface to the left and right boundaries of the frame and the image.
  • the first reel 11 stops rolling the curtain 5, and then activates the variable-pushing push-pull rod 3 fixed by the first telescopic frame 9 to move the first telescopic frame 9 to increase the width of the web, and also drives the second reel 14 release the curtain 5, until the variable width push-pull rod 3 increases the projection screen surface to the frame and the upper boundary of the image, the second reel 14 stops the retracting screen 5; and then views the same projection image as the projection screen used.
  • the variable width push-pull rod 3 fixed by the first telescopic frame 9 is activated, and the variable-width push-pull rod 3 drives the first telescopic frame 9 to move the reduced web, and also drives the second reel 14 to be rolled up.
  • the second reel 14 stops releasing the screen 5, and then starts the luffing of the second telescopic frame 7 and the third telescopic frame 10
  • Push-pull rod 3 the variable-width push-pull rod 3 drives the second telescopic frame 7 and the third telescopic frame 10 to move to increase the web size, and also drives the first reel 11 to release the screen 5 at the same time, until the variable-width push-pull rod 3 increases the projection screen surface.
  • the frame can be accurately aligned with the left and right borders of the image.

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  • General Physics & Mathematics (AREA)
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Abstract

一种变幅投影幕,包括:幕布(5)、卷轴(7)、框架(1,2)、支座(6)和磁条(8)。框架(1,2)由两根定长边框(1)和两根伸缩边框(2)依次交替对称固连组成。在框架(1,2)的背面、定长边框(1)的两端分别固连支座(6),卷轴(7)置于定长边框(1)两端设置的支座(6)之间并固连。幕布(5)置于框架(1,2)与卷轴(7)之间,幕布(5)的两边分别与固连在定长边框(1)上的卷轴(7)固连。两组磁条(8)分别置于框架(1,2)伸缩边框(2)和幕布(5)之间并固连。当观看与所用投影幕幅面不同的视频文件时,先将视频文件调整至与定长边框(1)尺寸一致,再通过伸缩边框(2)调整另一个方向的幅面尺寸。

Description

变幅框架投影幕
技术领域
[0001] 本发明涉及投影幕, 更具体地说, 涉及一种变幅框架投影幕。
背景技术
[0002] 投影幕是用在电影、 办公、 家庭影院及大型会议场合上用来显示图像、 视频文 件的工具。
[0003] 现有技术的视频文件按照长宽比分 1.78:1 (16:9) 、 1.85:1、 2.35:1 (21:9) 、 2.
6:1的不同幅面, 多数观看视频文件的用户通常只使用一种幅面的投影幕, 当观 看与所用投影幕幅面不同的视频文件吋, 需要使视频文件的一个方向尺寸与所 用投影幕的同方向尺寸相同, 在投影幕的另一个方向的影像边界以外会出现黑 边或影像裁剪, 虽然可以观看与所用投影幕幅面不同的视频文件, 但是投影幕 上的黑边或影像裁剪会干扰观看视频文件。 也有采用遮幅面板滑动遮挡部分幕 布, 实现未遮挡部分幕布长宽比例变化, 对应不同长宽比例投影影像, 消除一 般固定框架幕上显示的黑边或影像裁剪, 但遮挡部分仍存在于投影幕的框架之 内, 即使在弱光环境下 (全黑影音室因投影仪发光也属于弱光环境) 人眼的宽 容度仍能够准确辨识影像边界和框架边界, 也能够辨识遮幅面板的存在, 影响 观影效果。
技术问题
[0004] 本发明要解决的技术问题在于, 针对现有技术的上述缺陷, 提供一种变幅框架 投影幕, 通过伸缩式滑动边框带动幕布收放, 调整一个方向的投影幕尺寸, 改 变投影幕长宽比例, 使投影幕框架与影像边界准确契合, 为观看多种不同宽高 比的影像提供一个完美的成像区域, 实现彻底消除影像出现的黑边或影像裁剪 , 得到最佳的观看效果。
问题的解决方案
技术解决方案
[0005] 本发明解决其技术问题采用的技术方案是, 构造一种变幅框架投影幕, 包括幕 布、 卷轴、 框架和支座, 所述框架由两根定长边框和两根伸缩边框依次交替对 称固连组成; 在框架的背面、 定长边框的两端分别固连支座, 卷轴置于定长边 框两端设置的支座之间并固连; 幕布置于框架与卷轴之间, 幕布的两边分别与 固连在定长边框上的卷轴固连, 两对磁条分别置于幕布的另外两边、 框架的伸 缩边框和幕布之间并固连。
[0006] 在本发明所述的变幅框架投影幕中, 所述伸缩边框包括固定框、 伸缩框和变幅 推拉杆, 所述固定框呈幵口向内的槽型, 伸缩框为矩形管, 两根伸缩框分别置 于固定框的两端、 端头伸入固定框内并滑动连接, 每根伸缩框的另一端均分别 与一根定长边框的端头固连, 两个变幅推拉杆分别内置于固定框内两端, 每个 变幅推拉杆的一端与固定框固连、 另一端与伸缩框固连, 磁条分别置于固定框 和伸缩框上与幕布对应位置并固连。
[0007] 在本发明所述的变幅框架投影幕中, 所述固定框内还设置防脱滑块, 伸缩框外 还设置与固定框滑块对应的防脱滑槽,伸缩框伸入固定框内, 防脱滑块与防脱滑 槽滑动连接。
[0008] 在本发明所述的变幅框架投影幕中, 所述磁条为若干个依次排布的磁块。
[0009] 本发明解决其技术问题采用的另一技术方案是, 构造一种纵横变幅框架投影幕 , 包括第一卷轴、 第二卷轴、 框架、 支座和幕布, 所述框架由两根作为左右边 框的第一伸缩边框、 作为上边框的第二伸缩边框和作为下边框的第三伸缩边框 依次交替对称固连组成; 在框架的背面、 两根第一伸缩边框和第二伸缩边框的 两端均分别固连支座, 第一卷轴置于第一伸缩边框两端设置的支座之间并固连
, 第二卷轴置于第二伸缩边框两端设置的支座之间并固连; 所述幕布为倒置 τ形
, 倒置 τ形的幕布置于框架与第一卷轴或第二卷轴之间, 幕布下部的两边分别与 固连在第一伸缩边框上的第一卷轴固连、 上部与固连在第二伸缩边框上的第二 卷轴固连, 一对磁条置于幕布与第一卷轴或第二卷轴固连以外的边缘、 框架和 幕布之间并固连。
[0010] 在本发明所述的纵横变幅框架投影幕中, 所述第一伸缩边框包括第一固定框、 第一伸缩框和第一变幅推拉杆, 所述第一固定框呈幵口向内的槽型、 两端分别 固连支座, 第一伸缩框为矩形管, 第一伸缩框置于第一固定框的一端、 端头伸 入第一固定框内并滑动连接, 第一伸缩框的另一端与作为上边框的第二伸缩边 框端头固连, 第一固定框的另一端与作为下边框的第三伸缩边框端头固连, 第 一变幅推拉杆内置于第一固定框内, 第一变幅推拉杆的一端与第一固定框固连 、 另一端与第一伸缩框固连, 第一伸缩边框的第一固定框向下分别作为左右边 框。
[0011] 在本发明所述的纵横变幅框架投影幕中, 所述第二伸缩边框包括第二固定框、 第二伸缩框、 第三伸缩框和第二变幅推拉杆, 所述第二固定框呈幵口向内的槽 型、 两端分别固连支座, 第二伸缩框为矩形管, 第二伸缩框置于第二固定框的 一端、 端头伸入第二固定框内并滑动连接, 第二伸缩框的另一端与一根第一伸 缩边框的第一伸缩框端头固连; 第三伸缩框为矩形管, 第三伸缩框置于第二固 定框的另一端、 端头伸入第二固定框内并滑动连接, 第三伸缩框的另一端与另 一根第一伸缩边框的第一伸缩框端头固连, 两个第二变幅推拉杆分别内置于第 二固定框内两端, 每个第二变幅推拉杆的一端与第二固定框固连、 另一端与第 二伸缩框或第三伸缩框固连, 一对磁条分别置于第二伸缩框或第三伸缩框上与 幕布对应位置并固连。
[0012] 在本发明所述的纵横变幅框架投影幕中, 所述第二伸缩边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽 型, 第三伸缩框为矩形管, 第三伸缩框置于第三固定框的一端、 端头伸入第三 固定框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框 端头固连; 第四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头 伸入第三固定框内并滑动连接, 第四伸缩框的另一端与另一根第一伸缩边框的 第一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内两端, 每 个第三变幅推拉杆的一端与第三固定框固连、 另一端与第三伸缩框或第四伸缩 框固连, 一对磁条分别置于第三伸缩框或第四伸缩框上与幕布对应位置并固连
[0013] 在本发明所述的纵横变幅框架投影幕中, 所述第二伸缩边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽 型, 第三伸缩框为矩形管, 第三伸缩框置于第三固定框的一端、 端头伸入第三 固定框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框 端头固连; 第四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头 伸入第三固定框内并滑动连接, 第四伸缩框的另一端与两根第一伸缩边框的第 一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内两端, 每个 第三变幅推拉杆的一端与第三固定框固连、 另一端与第三伸缩框或第四伸缩框 固连, 一对磁条分别置于第三伸缩框或第四伸缩框上与幕布对应位置并固连。
[0014] 在本发明所述的纵横变幅框架投影幕中, 所述第一固定框或第二固定框内还设 置防脱滑块, 第一伸缩框或第二伸缩框或第三伸缩框外还设置与第二固定框滑 块对应的防脱滑槽, 防脱滑块与防脱滑槽滑动连接。
[0015] 在本发明所述的纵横变幅框架投影幕中, 所述磁条为若干个依次排布的磁块。
[0016] 本发明解决其技术问题采用的另一技术方案是, 构造一种变幅框架投影幕, 包 括幕布、 卷轴、 框架和支座, 所述框架包括第一边框、 第二边框、 第三边框和 第四边框, 所述第一边框和所述第二边框的两端分别固连支座, 卷轴置于所述 第一边框和所述第二边框的两端设置的支座之间并固连; 幕布置于框架与卷轴 之间, 幕布的两边分别与固连在所述第一边框和所述第二边框上的卷轴固连, 框架的第三边框和第四边框和幕布之间并固连。
[0017] 在本发明所述的变幅框架投影幕中, 所述第一边框和所述第二边框是定长边框 , 所述第三边框和第四边框是伸缩边框, 两根定长边框和两根伸缩边框依次交 替对称固连组成所述框架; 在框架的背面、 定长边框的两端分别固连支座, 卷 轴置于定长边框两端设置的支座之间并固连; 幕布置于框架与卷轴之间, 幕布 的两边分别与固连在定长边框上的卷轴固连, 框架的伸缩边框和幕布之间并固 连。
[0018] 在本发明所述的变幅框架投影幕中, 所述伸缩边框包括固定框、 伸缩框和变幅 推拉杆, 所述固定框呈幵口向内的槽型, 伸缩框为矩形管, 两根伸缩框分别置 于固定框的两端、 端头伸入固定框内并滑动连接, 每根伸缩框的另一端均分别 与一根定长边框的端头固连, 两个变幅推拉杆分别内置于固定框内两端, 每个 变幅推拉杆的一端与固定框固连、 另一端与伸缩框固连, 磁条分别置于固定框 和伸缩框上与幕布对应位置并固连。 [0019] 在本发明所述的变幅框架投影幕中, 所述固定框内还设置防脱滑块, 伸缩框外 还设置与固定框滑块对应的防脱滑槽,伸缩框伸入固定框内, 防脱滑块与防脱滑 槽滑动连接。
[0020] 在本发明所述的变幅框架投影幕中, 所述卷轴包括第一卷轴、 第二卷轴, 所述 第一边框和第二边框为作为左右边框的第一伸缩边框, 所述第三边框为作为上 边框的第二伸缩边框, 所述第四边框为作为下边框的第三伸缩边框, 所述第一 伸缩边框、 第二伸缩边框和第三伸缩边框依次交替对称固连组成所述框架; 在 框架的背面、 两根第一伸缩边框和第二伸缩边框的两端均分别固连支座, 第一 卷轴置于第一伸缩边框两端设置的支座之间并固连, 第二卷轴置于第二伸缩边 框两端设置的支座之间并固连。
[0021] 在本发明所述的变幅框架投影幕中, 所述幕布为倒置 T形, 倒置 T形的幕布置于 框架与第一卷轴或第二卷轴之间, 幕布下部的两边分别与固连在第一伸缩边框 上的第一卷轴固连、 上部与固连在第二伸缩边框上的第二卷轴固连。
[0022] 在本发明所述的变幅框架投影幕中, 所述第二伸缩边框包括第二固定框、 第二 伸缩框、 第三伸缩框和第二变幅推拉杆, 所述第二固定框呈幵口向内的槽型、 两端分别固连支座, 第二伸缩框为矩形管, 第二伸缩框置于第二固定框的一端 、 端头伸入第二固定框内并滑动连接, 第二伸缩框的另一端与一根第一伸缩边 框的第一伸缩框端头固连; 第三伸缩框为矩形管, 第三伸缩框置于第二固定框 的另一端、 端头伸入第二固定框内并滑动连接, 第三伸缩框的另一端与另一根 第一伸缩边框的第一伸缩框端头固连, 两个第二变幅推拉杆分别内置于第二固 定框内两端, 每个第二变幅推拉杆的一端与第二固定框固连、 另一端与第二伸 缩框或第三伸缩框固连, 一对磁条分别置于第二伸缩框或第三伸缩框上与幕布 对应位置并固连。
[0023] 在本发明所述的变幅框架投影幕中, 所述第二伸缩边框包括第三固定框、 第三 伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三伸缩框置于第三固定框的一端、 端头伸入第三固定 框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头 固连; 第四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入 第三固定框内并滑动连接, 第四伸缩框的另一端与另一根第一伸缩边框的第一 伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内两端, 每个第 三变幅推拉杆的一端与第三固定框固连、 另一端与第三伸缩框或第四伸缩框固 连, 一对磁条分别置于第三伸缩框或第四伸缩框上与幕布对应位置并固连。
[0024] 在本发明所述的变幅框架投影幕中, 所述第二伸缩边框包括第三固定框、 第三 伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三伸缩框置于第三固定框的一端、 端头伸入第三固定 框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头 固连; 第四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入 第三固定框内并滑动连接, 第四伸缩框的另一端与两根第一伸缩边框的第一伸 缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内两端, 每个第三 变幅推拉杆的一端与第三固定框固连、 另一端与第三伸缩框或第四伸缩框固连 , 一对磁条分别置于第三伸缩框或第四伸缩框上与幕布对应位置并固连。
发明的有益效果
有益效果
[0025] 本发明的变幅框架投影幕的有益效果是: 通过伸缩边框的移动伸缩改变长度、 同吋卷轴对幕布进行卷放的同步动作, 能够在所用投影幕满足不同幅面视频文 件的同吋, 使所用投影幕的框架与影像边界准确契合, 既满足所用投影幕观看 视频文件的美观, 又避免投影幕上的黑边或影像裁剪边缘会干扰观看视频文件 , 得到最佳的观看效果。 具有结构简单、 成本低廉的优点。
[0026] 进一步地, 通过伸缩边框的第一次移动伸缩改变长度、 带动卷轴对幕布进行卷 放的同步动作进行一次变幅, 再通过伸缩边框的第二次移动伸缩改变高度、 带 动卷轴对幕布进行卷放的同步动作, 能够在所用投影幕满足不同幅面投影影像 的同吋, 保持投影影像的投影面积, 使所用投影幕的框架与影像边界准确契合 , 即满足所用投影幕观看投影影像的美观, 又避免投影幕上的黑边或影像裁剪 边缘会干扰观看投影影像, 得到最佳和最大的观看效果, 使观众在相同的视距 位置观看不同比例的视频影像均能看到相同面积的影像。
对附图的简要说明 附图说明
[0027] 下面将结合附图及实施例对本发明作进一步说明, 附图中:
[0028] 图 1为本发明变幅框架投影幕的主视示意图;
[0029] 图 2为图 1的俯视示意图;
[0030] 图 3为图 1的左视示意图;
[0031] 图 4为图 1调整幅面后的主视示意图;
[0032] 图 5为实施例 2的主视示意图;
[0033] 图 6为图 5的俯视示意图;
[0034] 图 7为图 5的左视示意图;
[0035] 图 8为图 5调整幅面后的主视示意图;
[0036] 图 9为本发明纵横变幅框架投影幕的主视示意图;
[0037] 图 10为图 9的俯视示意图;
[0038] 图 11为图 9的左视示意图;
[0039] 图 12为本发明纵横变幅框架投影幕一次调整幅面后的主视示意图;
[0040] 图 13为本发明纵横变幅框架投影幕二次调整幅面后的主视示意图;
[0041] 图 14为图 13的左视示意图。
[0042] 图 1-8中: 1定长边框, 2伸缩框, 3变幅推拉杆, 4固定框, 5幕布, 6支座, 7卷轴, 8磁条;
[0043] 图 9-14中: 1第二伸缩框, 2第一伸缩框, 3变幅推拉杆, 4第一固定框, 5幕 布, 6第二固定框, 7第二伸缩边框, 8第三伸缩框, 9第一伸缩边框, 10第三伸 缩边框, 11第一卷轴, 12支座, 13磁条, 14第二卷轴。 本发明的最佳实施方 式 本发明的实施方式
[0044] 下面结合附图和实施例对本发明进一步说明。
[0045] 参照图 1〜图 4, 实施例 1, 示出了本实施例一种变幅框架投影幕, 包括幕布 5、 卷轴 7、 框架和支座 6, 所述框架由左、 右两根定长边框 1和上、 下两根伸缩边框 依次交替对称固连组成; 在框架的背面、 定长边框 1的两端分别固连支座 6, 卷 轴 7置于定长边框 1两端设置的支座 6之间并固连; 幕布 5置于框架与卷轴 7之间, 幕布 5的两边分别与固连在定长边框 1上的卷轴 7固连, 两对磁条 8分别置于幕布 5 的另外两边、 框架的伸缩边框和幕布 5之间并固连。 所述伸缩边框的结构是: 包 括固定框 4、 伸缩框 2和变幅推拉杆 3, 所述固定框 4呈幵口向内的槽型, 固定框 4 内还设置防脱滑块, 伸缩框 2为矩形管, 伸缩框 2外还设置与固定框 4滑块对应的 防脱滑槽, 两根伸缩框 2分别置于固定框 4的两端、 端头伸入固定框 4内、 防脱滑 块与防脱滑槽滑动连接, 每根伸缩框 2的另一端均分别与一根定长边框 1的端头 固连, 两个变幅推拉杆 3分别内置于固定框 4内两端, 每个变幅推拉杆 3的一端与 固定框 4固连、 另一端与伸缩框 2固连, 磁条 8分别置于固定框 4和伸缩框 2上与幕 布 5对应位置并固连。 所述磁条 8为若干个依次排布的磁块。 本实施例采用现有 技术制造, 所述卷轴 7和变幅推拉杆 3为现有技术的市售产品。
[0046] 本实施例的使用过程是: 当观看与所用投影幕幅面不同的视频文件吋, 先将视 频文件高度调整至与定长边框 1尺寸一致, 然后启动变幅推拉杆 3, 在变幅推拉 杆 3移动缩减幅面长度吋, 带动卷轴 7同吋卷收幕布 5, 直至变幅推拉杆 3带动卷 轴 7将幕布 5卷收、 投影幕幅面缩减至框架与影像边界准确契合, 卷轴 7停止卷收 幕布 5即可; 再观看与所用投影幕幅面相同的视频文件吋, 启动变幅推拉杆 3, 变幅推拉杆 3移动增加幅面长度, 带动卷轴 7同吋释放幕布 5, 直至变幅推拉杆 3 将幅面长度增加至框架与影像边界准确契合, 卷轴 7停止释放幕布 5即可。
[0047] 参照图 5〜图 8, 实施例 2, 本实施例与实施例 1的结构和工作过程基本相同, 不 同之处在于: 定长边框 1为上、 下边框、 伸缩边框为左、 右边框, 调整投影幕幅 面吋, 收缩和释放高度方向的幅面尺寸即可。
[0048] 实施例 3, 本实施例与实施例 2的结构和工作过程基本相同, 不同之处在于: 伸 缩边框不同, 所述伸缩边框的结构是: 包括固定框 4、 伸缩框 2和变幅推拉杆 3, 所述固定框 4呈幵口向内的槽型, 固定框 4内还设置防脱滑块, 伸缩框 2为矩形管 , 伸缩框 2外还设置与固定框 4滑块对应的防脱滑槽, 一根伸缩框 2置于固定框 4 的一端、 端头伸入固定框 4内、 防脱滑块与防脱滑槽滑动连接, 伸缩框 2的另一 端与一根定长边框 1的端头固连, 固定框 2的另一端与另一根定长边框 1的端头固 连, 一个变幅推拉杆 3内置于固定框 4内, 变幅推拉杆 3的一端与固定框 4固连、 另一端与伸缩框 2固连。
参照图 9-16, 示出了本实施例一种纵横变幅框架投影幕, 包括第一卷轴 11、 第 二卷轴 14、 框架、 支座 12和幕布 5, 所述框架由两根作为左右边框的第一伸缩边 框 9、 作为上边框的第二伸缩边框 7和作为下边框的第三伸缩边框 10依次交替对 称固连组成; 在框架的背面、 两根第一伸缩边框 9和第二伸缩边框 7的两端均分 别固连支座 12, 第一卷轴 11置于第一伸缩边框 9两端设置的支座 12之间并固连, 第二卷轴 14置于第二伸缩边框 7两端设置的支座 12之间并固连; 所述幕布 5为倒 置 T形, 倒置 T形的幕布 5置于框架与第一卷轴 11或第二卷轴 14之间, 幕布 5下部 的两边分别与固连在第一伸缩边框 9上的第一卷轴 11固连、 上部与固连在第二伸 缩边框 7上的第二卷轴 14固连, 一对磁条 13置于幕布 5与第一卷轴 11或第二卷轴 1 4固连以外的边缘、 框架和幕布 5之间并固连。 所述第一伸缩边框 9的结构是: 包 括第一固定框 4、 第一伸缩框 2和变幅推拉杆 3, 所述第一固定框 4呈幵口向内的 槽型、 两端分别固连支座 12, 第一伸缩框 2为矩形管, 第一伸缩框 2置于第一固 定框 4的一端、 端头伸入第一固定框 4内并滑动连接, 第一伸缩框 2的另一端与作 为上边框的第二伸缩边框 7的第二伸缩框 1端头固连, 第一固定框 4的另一端与作 为下边框的第三伸缩边框 10的第二伸缩框 1端头固连, 变幅推拉杆 3内置于第一 固定框 4内, 变幅推拉杆 3的一端与第一固定框 4固连、 另一端与第一伸缩框 2固 连, 第一伸缩边框 9的第一固定框 4向下分别作为左右边框。 所述第一固定框 4内 还设置防脱滑块, 第一伸缩框 2外还设置与第一固定框 4滑块对应的防脱滑槽, 防脱滑块与防脱滑槽滑动连接。 所述第二伸缩边框 7的结构是: 包括第二固定框 6、 第二伸缩框 1、 第三伸缩框 8和变幅推拉杆 3, 所述第二固定框 6呈幵口向内的 槽型、 两端分别固连支座 12, 第二伸缩框 1为矩形管, 第二伸缩框 1置于第二固 定框 6的一端、 端头伸入第二固定框 6内并滑动连接, 第二伸缩框 1的另一端与一 根第一伸缩边框 9的第一伸缩框 2端头固连; 第三伸缩框 8为矩形管, 第三伸缩框 8置于第二固定框 6的另一端、 端头伸入第二固定框 6内并滑动连接, 第三伸缩框 8的另一端与另一根第一伸缩边框 9的第一伸缩框 2端头固连, 两个变幅推拉杆 3 分别内置于第二固定框 6内两端, 每个变幅推拉杆 3的一端与第二固定框 6固连、 另一端与第二伸缩框 1或第三伸缩框 8固连, 一对磁条 13分别置于第二伸缩框 1或 第三伸缩框 8上与幕布 5对应位置并固连。 所述第三伸缩边框 10的结构、 连接关 系与第二伸缩边框 7基本相同, 不同之处在于: 第二固定框 6两端不必固连支座 1 2, 第二伸缩框 1或第三伸缩框 8的另一端分别与两根第一伸缩边框 9的第一固定 框 4端头固连。 所述第二固定框 6内还设置防脱滑块, 第二伸缩框 1或第三伸缩框 8外还设置与第二固定框 6滑块对应的防脱滑槽, 防脱滑块与防脱滑槽滑动连接 。 所述磁条 13为若干个依次排布的磁块。 本实施例采用现有技术制造, 所述第 一卷轴 11、 第二卷轴 14和变幅推拉杆 3为现有技术的市售产品。
[0050] 本实施例的使用过程是: 当观看与所用投影幕幅面不同的投影影像吋, 先启动 第二伸缩边框 7和第三伸缩边框 10固连的变幅推拉杆 3, 在变幅推拉杆 3带动第二 伸缩边框 7和第三伸缩边框 10移动缩减幅面吋, 也带动第一卷轴 11同吋卷收幕布 5, 直至变幅推拉杆 3将投影幕幅面缩减至框架与影像左右边界准确契合, 第一 卷轴 11停止卷收幕布 5, 然后启动第一伸缩边框 9固连的变幅推拉杆 3, 在变幅推 拉杆 3带动第一伸缩边框 9移动增加幅面吋, 也带动第二卷轴 14同吋释放幕布 5, 直至变幅推拉杆 3将投影幕幅面增加至框架与影像上边界准确契合, 第二卷轴 14 停止卷收幕布 5即可; 再观看与所用投影幕幅面相同的投影影像吋, 启动第一伸 缩边框 9固连的变幅推拉杆 3, 变幅推拉杆 3带动第一伸缩边框 9移动缩减幅面, 也带动第二卷轴 14同吋卷收幕布 5, 直至变幅推拉杆 3将幅面缩减至投影幕框架 与影像上边界准确契合, 第二卷轴 14停止释放幕布 5, 然后启动第二伸缩边框 7 和第三伸缩边框 10固连的变幅推拉杆 3, 在变幅推拉杆 3带动第二伸缩边框 7和第 三伸缩边框 10移动增加幅面吋, 也带动第一卷轴 11同吋释放幕布 5, 直至变幅推 拉杆 3将投影幕幅面增加至框架与影像左右边界准确契合即可。
[0051] 虽然本发明是通过具体实施例进行说明的, 本领域技术人员应当明白, 在不脱 离本发明范围的情况下, 还可以对本发明进行各种变换及等同替代。 因此, 本 发明不局限于所公幵的具体实施例, 而应当包括落入本发明权利要求范围内的 全部实施方式。

Claims

权利要求书
[权利要求 1] 一种变幅框架投影幕, 包括幕布、 卷轴、 框架和支座, 其特征在于, 所述框架由两根定长边框和两根伸缩边框依次交替对称固连组成; 在 框架的背面、 定长边框的两端分别固连支座, 卷轴置于定长边框两端 设置的支座之间并固连; 幕布置于框架与卷轴之间, 幕布的两边分别 与固连在定长边框上的卷轴固连, 两对磁条分别置于幕布的另外两边 、 框架的伸缩边框和幕布之间并固连。
[权利要求 2] 根据权利要求 1所述的变幅框架投影幕, 其特征在于, 所述伸缩边框 包括固定框、 伸缩框和变幅推拉杆, 所述固定框呈幵口向内的槽型, 伸缩框为矩形管, 两根伸缩框分别置于固定框的两端、 端头伸入固定 框内并滑动连接, 每根伸缩框的另一端均分别与一根定长边框的端头 固连, 两个变幅推拉杆分别内置于固定框内两端, 每个变幅推拉杆的 一端与固定框固连、 另一端与伸缩框固连, 磁条分别置于固定框和伸 缩框上与幕布对应位置并固连。
[权利要求 3] 根据权利要求 2所述的变幅框架投影幕, 其特征在于, 所述固定框内 还设置防脱滑块, 伸缩框外还设置与固定框滑块对应的防脱滑槽,伸 缩框伸入固定框内, 防脱滑块与防脱滑槽滑动连接。
[权利要求 4] 根据权利要求 1所述的变幅框架投影幕, 其特征在于, 所述磁条为若 干个依次排布的磁块。
[权利要求 5] —种纵横变幅框架投影幕, 包括第一卷轴、 第二卷轴、 框架、 支座和 幕布, 其特征在于, 所述框架由两根作为左右边框的第一伸缩边框、 作为上边框的第二伸缩边框和作为下边框的第三伸缩边框依次交替对 称固连组成; 在框架的背面、 两根第一伸缩边框和第二伸缩边框的两 端均分别固连支座, 第一卷轴置于第一伸缩边框两端设置的支座之间 并固连, 第二卷轴置于第二伸缩边框两端设置的支座之间并固连; 所 述幕布为倒置 T形, 倒置 T形的幕布置于框架与第一卷轴或第二卷轴 之间, 幕布下部的两边分别与固连在第一伸缩边框上的第一卷轴固连 、 上部与固连在第二伸缩边框上的第二卷轴固连, 一对磁条置于幕布 与第一卷轴或第二卷轴固连以外的边缘、 框架和幕布之间并固连。
[权利要求 6] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述第一 伸缩边框包括第一固定框、 第一伸缩框和第一变幅推拉杆, 所述第一 固定框呈幵口向内的槽型、 两端分别固连支座, 第一伸缩框为矩形管 , 第一伸缩框置于第一固定框的一端、 端头伸入第一固定框内并滑动 连接, 第一伸缩框的另一端与作为上边框的第二伸缩边框端头固连, 第一固定框的另一端与作为下边框的第三伸缩边框端头固连, 第一变 幅推拉杆内置于第一固定框内, 第一变幅推拉杆的一端与第一固定框 固连、 另一端与第一伸缩框固连, 第一伸缩边框的第一固定框向下分 别作为左右边框。
[权利要求 7] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述第二 伸缩边框包括第二固定框、 第二伸缩框、 第三伸缩框和第二变幅推拉 杆, 所述第二固定框呈幵口向内的槽型、 两端分别固连支座, 第二伸 缩框为矩形管, 第二伸缩框置于第二固定框的一端、 端头伸入第二固 定框内并滑动连接, 第二伸缩框的另一端与一根第一伸缩边框的第一 伸缩框端头固连; 第三伸缩框为矩形管, 第三伸缩框置于第二固定框 的另一端、 端头伸入第二固定框内并滑动连接, 第三伸缩框的另一端 与另一根第一伸缩边框的第一伸缩框端头固连, 两个第二变幅推拉杆 分别内置于第二固定框内两端, 每个第二变幅推拉杆的一端与第二固 定框固连、 另一端与第二伸缩框或第三伸缩框固连, 一对磁条分别置 于第二伸缩框或第三伸缩框上与幕布对应位置并固连。
[权利要求 8] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述第二 伸缩边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉 杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三 伸缩框置于第三固定框的一端、 端头伸入第三固定框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头固连; 第 四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入 第三固定框内并滑动连接, 第四伸缩框的另一端与另一根第一伸缩边 框的第一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定 框内两端, 每个第三变幅推拉杆的一端与第三固定框固连、 另一端与 第三伸缩框或第四伸缩框固连, 一对磁条分别置于第三伸缩框或第四 伸缩框上与幕布对应位置并固连。
[权利要求 9] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述第二 伸缩边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉 杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三 伸缩框置于第三固定框的一端、 端头伸入第三固定框内并滑动连接, 第三伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头固连; 第 四伸缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入 第三固定框内并滑动连接, 第四伸缩框的另一端与两根第一伸缩边框 的第一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框 内两端, 每个第三变幅推拉杆的一端与第三固定框固连、 另一端与第 三伸缩框或第四伸缩框固连, 一对磁条分别置于第三伸缩框或第四伸 缩框上与幕布对应位置并固连。
[权利要求 10] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述第一 固定框或第二固定框内还设置防脱滑块, 第一伸缩框或第二伸缩框或 第三伸缩框外还设置与第二固定框滑块对应的防脱滑槽, 防脱滑块与 防脱滑槽滑动连接。
[权利要求 11] 根据权利要求 5所述的纵横变幅框架投影幕, 其特征在于, 所述磁条 为若干个依次排布的磁块。
[权利要求 12] —种变幅框架投影幕, 包括幕布、 卷轴、 框架和支座, 其特征在于, 所述框架包括第一边框、 第二边框、 第三边框和第四边框, 所述第一 边框和所述第二边框的两端分别固连支座, 卷轴置于所述第一边框和 所述第二边框的两端设置的支座之间并固连; 幕布置于框架与卷轴之 间, 幕布的两边分别与固连在所述第一边框和所述第二边框上的卷轴 固连, 框架的第三边框和第四边框和幕布之间并固连。
[权利要求 13] 根据权利要求 12所述的变幅框架投影幕, 其特征在于, 所述第一边框 和所述第二边框是定长边框, 所述第三边框和第四边框是伸缩边框, 两根定长边框和两根伸缩边框依次交替对称固连组成所述框架; 在框 架的背面、 定长边框的两端分别固连支座, 卷轴置于定长边框两端设 置的支座之间并固连; 幕布置于框架与卷轴之间, 幕布的两边分别与 固连在定长边框上的卷轴固连, 框架的伸缩边框和幕布之间并固连。 根据权利要求 13所述的变幅框架投影幕, 其特征在于, 所述伸缩边框 包括固定框、 伸缩框和变幅推拉杆, 所述固定框呈幵口向内的槽型, 伸缩框为矩形管, 两根伸缩框分别置于固定框的两端、 端头伸入固定 框内并滑动连接, 每根伸缩框的另一端均分别与一根定长边框的端头 固连, 两个变幅推拉杆分别内置于固定框内两端, 每个变幅推拉杆的 一端与固定框固连、 另一端与伸缩框固连, 磁条分别置于固定框和伸 缩框上与幕布对应位置并固连。
根据权利要求 14所述的变幅框架投影幕, 其特征在于, 所述固定框内 还设置防脱滑块, 伸缩框外还设置与固定框滑块对应的防脱滑槽,伸 缩框伸入固定框内, 防脱滑块与防脱滑槽滑动连接。
根据权利要求 12所述的变幅框架投影幕, 其特征在于, 所述卷轴包括 第一卷轴、 第二卷轴, 所述第一边框和第二边框为作为左右边框的第 一伸缩边框, 所述第三边框为作为上边框的第二伸缩边框, 所述第四 边框为作为下边框的第三伸缩边框, 所述第一伸缩边框、 第二伸缩边 框和第三伸缩边框依次交替对称固连组成所述框架; 在框架的背面、 两根第一伸缩边框和第二伸缩边框的两端均分别固连支座, 第一卷轴 置于第一伸缩边框两端设置的支座之间并固连, 第二卷轴置于第二伸 缩边框两端设置的支座之间并固连。
根据权利要求 16所述的变幅框架投影幕, 其特征在于, 所述幕布为倒 置 T形, 倒置 T形的幕布置于框架与第一卷轴或第二卷轴之间, 幕布 下部的两边分别与固连在第一伸缩边框上的第一卷轴固连、 上部与固 连在第二伸缩边框上的第二卷轴固连。
根据权利要求 16所述的变幅框架投影幕, 其特征在于, 所述第二伸缩 边框包括第二固定框、 第二伸缩框、 第三伸缩框和第二变幅推拉杆, 所述第二固定框呈幵口向内的槽型、 两端分别固连支座, 第二伸缩框 为矩形管, 第二伸缩框置于第二固定框的一端、 端头伸入第二固定框 内并滑动连接, 第二伸缩框的另一端与一根第一伸缩边框的第一伸缩 框端头固连; 第三伸缩框为矩形管, 第三伸缩框置于第二固定框的另 一端、 端头伸入第二固定框内并滑动连接, 第三伸缩框的另一端与另 一根第一伸缩边框的第一伸缩框端头固连, 两个第二变幅推拉杆分别 内置于第二固定框内两端, 每个第二变幅推拉杆的一端与第二固定框 固连、 另一端与第二伸缩框或第三伸缩框固连, 一对磁条分别置于第 二伸缩框或第三伸缩框上与幕布对应位置并固连。
[权利要求 19] 根据权利要求 16所述的变幅框架投影幕, 其特征在于, 所述第二伸缩 边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三伸缩 框置于第三固定框的一端、 端头伸入第三固定框内并滑动连接, 第三 伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头固连; 第四伸 缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入第三 固定框内并滑动连接, 第四伸缩框的另一端与另一根第一伸缩边框的 第一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内 两端, 每个第三变幅推拉杆的一端与第三固定框固连、 另一端与第三 伸缩框或第四伸缩框固连, 一对磁条分别置于第三伸缩框或第四伸缩 框上与幕布对应位置并固连。
[权利要求 20] 根据权利要求 16所述的变幅框架投影幕, 其特征在于, 所述第二伸缩 边框包括第三固定框、 第三伸缩框、 第四伸缩框和第三变幅推拉杆, 所述第三固定框呈幵口向内的槽型, 第三伸缩框为矩形管, 第三伸缩 框置于第三固定框的一端、 端头伸入第三固定框内并滑动连接, 第三 伸缩框的另一端与两根第一伸缩边框的第一伸缩框端头固连; 第四伸 缩框为矩形管, 第四伸缩框置于第三固定框的另一端、 端头伸入第三 固定框内并滑动连接, 第四伸缩框的另一端与两根第一伸缩边框的第 一伸缩框端头固连, 两个第三变幅推拉杆分别内置于第三固定框内两 端, 每个第三变幅推拉杆的一端与第三固定框固连、 另一端与第三伸 缩框或第四伸缩框固连, 一对磁条分别置于第三伸缩框或第四伸缩框 上与幕布对应位置并固连。
PCT/CN2015/096332 2014-12-08 2015-12-03 变幅框架投影幕 WO2016091118A1 (zh)

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